United States
Environmental Protection
Agency
Office of
Emergency and
Remedial Response
EPA/ROD/R08-90/043
January 1990
EPA
Superfund
Record of Decision
-------
50272-101
REPORT DOCUMENTATION 11. REPORT NO. 12.
PAGE EPA/ROD/R08-90/043
3. Recipient. AcC888Ion No.
4. Tlt18 8IId Subtlt18
SUPERFUND RECORD OF DECISION
Rocky Flats Plant (DOE), CO
First Remedial Action
7. AuIIIor(.)
5. Report 0818
1/05/90
I.
L Pitrfonnlng OrganiDtion ~ No.
8. ".,fOl1nlllll OrgainiDtion N8m8 and Add....
10. ProjIcVT88IIIWortI Unit No.
11. C-.ct(C)-GrMt(G) No.
(C)
(0)
12. Sponaoring Organlz8llon Nama and AdcINu
U.S. Environmental P=otection
401 M Street, S.~.
Washington, D.C. 20460
13. Type of R.., . Period Co--
Agency
800/000
14.
15, su~ No-
11. Ab81r8Ct (Umll: 2110 _rd.'
The 6,550-acre Rocky Flats Plant (DOE) site is a federal facility, which serves as a
nuclear weapons research development and production complex in Jefferson County,
Colorado. Surrounding land use is primarily rural residential, although there are some
industrial properties nearby. The site overlies an alluvial/colluvial aquifer, and a
small wetlands area is present within the facility boundaries. Since 1951, on site
operations have included the manufacture of nuclear weapons components from plutonium,
uranium, beryllium, and stainless steel. There are twelve sites, designated as solid
waste management units, which comprise the 881 Hillside area. In 1987, EPA identified
VOC-contaminated ground water in the 881 Hillside area located in the southeast corner
of the site near a surface stream. Possible sources for this contamination included
chemical and oil waste pits, fuel oil tanks, and an associated drum storage area,
onsite solvent/oil spills and leaks, and sanitary sewer overflow discharge. This
Record of Decision (ROD) addresses management of migration and cleanup of ground water
in the 881 Hillside area, and is an interim remedy. Final remediation of this site
will be addressed in a subsequent ROD. The primary contaminants of concern affecting
the ground water are VOCs including PCE and TCE; metals including chromium; and
radioactive materials.
(See Attached Paae)
17. Docurnanl Analyai. L Dncript018
Record of Decision - Rocky Flats Plant (DOE), CO
First Remedial Action
Contaminated Medium: gw
Key Contaminants: VOCs (PCE, TCE), metals (chromium), radioactive materials
b. Identll\8nlOpen-Endad Tenna
c. COSA TI AeIcIIO,oup
18. Avlli18biMty SI81ement
19. Security CI... (Thi. Repon)
None
21. No. of Pagea
430
I
2Q. Security CIa.. (Thl. Pag.)
N("\n~
22. PrIce
(S88 ANSJ.Z39.18)
S88/nelnJCllone on Relf8f88
vr
272 (4-77)
(Formerly NTlS-35)
-------
EPA/ROD/R08-90/043
Rocky Flats Plant (DOE), CO
First Remedial Action
Abstract (Continued)
The selected remedial action for this site includes intercepting contaminated ground
water in the alluvial/colluvial aquifer using a french drain system; treating the
contaminated water in an onsite treatment plant using filtration followed by UV
peroxide to remove organics, and ion exchange to remove inorganics; storing the treated
water temporarily onsite during effluent quality testing prior to discharging the
treated water to an onsite interceptor ditch; and ground water monitoring. The
estimated present worth cost for this remedial action is $4,588,200, which includes an
annual O&M cost of $258,100 for 30 years.
~
PERFORMANCE STANDARDS OR GOALS: Ground water cleanup standards will be
stringent of Federal MCLs or MCLGs, or State water quality standards.
Chemical-specific goals include PCE 5 ug/l (State), TCE 5 ug/l (State),
chromium 0.05 mg/l (State), and chromium 0.05 mg/l (State).
the more
w
-------
INTERIM MEASURES/INTERIM REMEDIAL
ACTION PLAN AND DECISION DOCUMENT
881 HILLSIDE AREA
OPERABLE UNIT NO. 1
U.S. DEPARTMENT OF ENERGY
Rocky Fids Plant
Goldtn, Colorado
JANUARY, 1990
Volume I - Text
-------
- -
SECTION
1.0
I
2.0
2.1
., ..
_.~
3.0
TABLE OF CONTENTS
VOLUME I
TTTL E
PAGE
INTRODUCTION. . . . . . . . . . " . . .. . ..... . "" . .. .. . .. . . . .. . ..... . . . . .. 1.1.
1.1
Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1
1M/IRA Plan Organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2
SITE CHARACTERIZATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1
Site Description and Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1.1 Location and Facility Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1.2 881 Hillside Area Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3
2.1.3 Surrounding Land Use and Population Density. . . . . . . . . . . . . . . . 2-5
2.1.4 Site Topography and Geology. . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . 2.6
2.1.4.1 Topography........................................ 2.6
2.1.4.2 881 Flillside Are3 Geology........... . ........ . . ... . . :.i
2.1.5 Sensitive Environments. Surface Water and Ground Water. . . . . . . :-9
2.1.5.1 Sensitive Environments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.1.5.2 Surface Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . :-9
2.1.5.3 Ground Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.1.6 Cont3minants. Description and Sources. . . . . . . . . . . . . . . . . . . . . 2-13
2.1.6.1 Ground Water Contamination........................ :-13
2.1.6.2 Soil Contamination. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
2.1.6.3 Surface W:uer Contamination. . . . . . . . . . . . . . . . . . . . . . . . 2-29
2.1.6.4 Sediment Contamination. . . . . . . . . . . . . . . . . . . . . . . . . . . . :.30
Analytical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
Site Conditions that Justify an 1M/IRA. . . . . ~ . . . . . . . . . . . . . . . . . . . . . 2.30
IDENTIFICA TION OF INTERIM MEASURE/INTERIM REMEDIAL
A CTI 0 N 0 BJ E CTIVES ................................................ 3 - J
3.1
.. .,
~.-
.. ..
~.~
Determination of Remedi31 Action Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Interim Remedial Action Schedule............... . . ......... . ... . . . 3-1
Compliance with Applicable or Relevant and Appropriate
Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.3.1 Ambient or Chemic31-Specific Requirements. . . . . . . . . . . . . . . . . . 3-3
3.3.1.1 Safc Drinking Watcr Act Maximum Contaminant
Levcls (MCLs) and MCL Goals. . . . . . . . . . . . . . . . . . . . . . . 3-10
3.3.1.2 Ambient Water Quality Criteria...................... 3-18
3.3.1.3 Colorado Surface Water Quality Standards. . . . . . . . . . . . . 3.18
3.3.1.4 RCRA Maximum Concentration Limits. . . . . . . . . . . . . . . . 3-19
3.3.2 Locational Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.3.3 Perform3nce, Design, or Other Action-Specific Requirements. . . 3-20
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
egokr\88. \iap-'oc.jan
JANUARY 1990
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SECTION NO.
4.0
.
4.2
4.3
4.4
4.5
TABLE OF CONTENTS
(Continued)
TTTL E
PAGE
IDENTIFICATION AND SCREENING OF POTENTIAL 1M/IRA OPTIONS. ... 4.1 '
4.1
Summary of the FS Technology and Remedial Alternative Screening
Process. . . . . . . . .. ......'....................................... 4-1
1M/IRA Plan Screening Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.2.1 Effectiveness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4
4.2.2 Implementability..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4
4.2.3 Cost........ ............................................ 4.5
Ground Water Treatment Technologies Evaluation. . . . . . . . . . . . . . . . . . . 4-5
4.3.1 Activated Carbon Adsorption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.3.1.1 Description........................................ 4-8
4.3.~.2 Effectiveness...................................... 4-8
4.3.1.3 Implementability .................................. 4-11
4.3.1.4 Costs............................................ 4-11
4.3.2 Ultraviolet (UV) Peroxide Oxidation........................ 4-13
4.3.2.1 Description....................................... 4-13
4.3.2.2 Effectiveness..................................... 4-13
4.3.2.3 Implementability .................................. 4-16
4.3.2.4 Costs............................................ 4-1 7
4.3.3 Air Stripping with Off.Gas Treatment. ................... . . 4-17
4.3.3.1 Description....................................... 4-1 i
4.3.3.2 Effe:ctive:ness ..................................... 4-20
4.3.3.3 Imple:mentability .................................. 4-: I
4.3.3.4 Costs .'''.......................................... 4-2:
4.3.4 Ion Exchange Tn:atment .................................. 4-24
4.3.4.1 Description....................................... 4-24
4.3.4.2 Effectiveness..................................... 4-24
4.3.4.3 Implementability .................................. 4-27
4.3.4.4 Costs............................................ 4-28
4.3.5 Electrodial ysis .......................................... 4- 30
4.3.5.1 Description....................................... 4- 30
4.3.5.: Effectiveness..................................... 4.3:
4.3.5.3 Implementability .................................. 4-32
4.3.5.4 Costs............................................ 4-33
4.3.6 Reverse Osmosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35
4.3.6.1 Descri ption ..................................... . . 4- 35
4.3.6.2 Eff ecti veness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4- 3 7
4.3.6.3 Implementability .................................. 4-38
4.3.6.4 Costs............................................ 4-39
Comparative Analysis of the Ground Water Treatment Technologies. . . 4-39
4.4.1 Organic Contaminant Treatment Technologies. . . . . . . . . . . . . . . . 4-39
4.4.2 Inorganic Contaminant Treatment Alternatives. . . . . . . . . . . . . . . 4-41
4.4.3 Preferred Ground Water Treatment System. . . . . . . . . . . . . . . . . . . 4-4:
Detailed Evaluation of Remedial Action Alternatives. . . . . . . . . . . . . . . . 4-44
4.5.1 Alternative 1: Collect Ground Water From Footing Drain,
Source Well, and French Drain, and Discharge to the South
Interceptor Trench Downgradient of the 881 Hillside Area. . . . . 4-44
4.5.1.1 Description....................................... 4-44
4.5.1.2 Erf ecti veness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46
4.5.1.3 Implementability .................................. 4-49
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ecckc\881 \iap-coc.jan
JANUARY 1990
-------
TABLE OF CONTENTS
(Continued
SECTION NO.
TTTL E
PAGE
4.5.2
Alternative 2: Total Encapsulation. . . . . . . . . . . . . . . . . . . . . . . . . 4-52 .
4.5.2.1 Description....................................... 4-52
4.5.2.2 Effectiveness..................................... 4-55
4.5.2.3 Implementability .................................. 4-56
Alternative 3: Collect Ground Water From Source Well and
Footing Drain, and Discharge to the South Interceptor
Trench Downgradient of the 81 Hillside Area. . . . . . . . . . . . . . . . 4-58
4.5.3.1 Description....................................... 4-58
4.5.3.2 Effectiveness..................................... 4-60
4.5.3.3 Implementabiliry .................................. 4-60
.
4.5.3
.
4.6
Estimated Costs for Alternatives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
5.0
COMPARATIVE AN AL YSIS """"""""""""""""""""'" 5-1
5.1
Introduction. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2
Comparison of Alternatives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
6.0
PROPOSED 1M/IRA. . . . . . . . . . . .. """""""""""""""""'" 6-1
6.1
Summary. . . . . . . . . . .. .......................................... 6-1
6.2
Additional Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6- i
7.0
REFERENCES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-]
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKYFLATSPLANT,GOLDEN,COLORADO
e(okl\881 \iap-'oc.jan
JANUARY 199Q
-------
TABLE OF CONTENTS
{Continued
LIST OF FIGURES
FIGURE NO. TITLE
2-1
j 2-2
2-3
:-~
~-I
~-:
~-3
4-4
4-5
~-6
4-7
4-8
~-9
~-IO
~-Il
~-12
6-1
PAGE.
Location of Rocky Flats Plant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
881 Hillside Area Site Map ............................................. 2-4
Surface Water Drainage Patterns at Rocky Flats Plant..................... 2-10
Well Locations at 881 Hillside Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
C~rbon Adsorption Tre~tment Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
ev /Peroxide System. . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Air Stripping. . . . . . . . . . . .. .......................................... 4-19
Ion Exchange. . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Electrodialysis. . . . . . . . . . .. .......................................... 4-31
Reverse Osmosis. . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Treatment System Process Fl.ow Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-.0
Alternative I: French Drain Collection with Treatment. . . . . . . . . . . . . . . . . . . . ~-45
French Drain Section. . . . . . .. ......................................... 4-~7
Alternative 2: Total Encapsulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53
Total Encapsulation Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-54
Alternative 3: Foundation Drain & Well 9-74 Collection with Treatment. . . . . . 4-59
Treatment System Process Flow Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ec.kc\881 \iap-coc.jao
JANUARY 1990
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TABLE OF CONTENTS
(CoDtinued
LIST OF TABLES
2-1
TABLE NO. TITLE
PAGE.
2-2
2-3
3-1
3-2
3-3
~-I
4-2
4-3
4-4
~-5
4-6
~- 7 .
4-8
4-9
4-10
5-1
Volatile Organic Compound, Dissolved Metal Constituent, Inorganic
Constituent and Radionuclide Constituent Concentrations Above Estimated
Background for Building 881 Footing Drain Discharge.. ...... . . . . . . . . . . . . . 2-15
Volatile Organic Compound, Dissolved Metal Constituent, Inorganic
Constituent and Radionuclide Constituent Concentrations Above Estimated
Background for Alluvial Wells at the 881 Hillside...................... . . . 2.19
,
Volatile Organic Compound, Dissolved Metal Constituent, Inorganic
Constituent and Radionuclide Constituent Concentrations Above Estimate
Baokground for Alluvial Wells Downgradient of the 881 Hillside. . . . . . . . . . . . 2-23
Chemical Specific ARARs for Compounds and Elements Detected at the
881 Hillside Area. . . . . .. """"""""""""""""""""""" 3-4
Screening of Chemical-Specific ARARs Pertinent to 881 Hillside Area
1M/IRA Options. . . . . .. """"""""""""""""""""""" 3-11
Screening of Probable Action-Specific ARARs for Remedial Actions
at the 881 Hillside Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.: I
Basis of Design. . . . . . . . . . . . .
. . . . . . . . . . . . . . . .'. . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Estimated Costs for Ca..rbon Adsorption System. . .... ... ... ... . . . .. . . . . . . . ~-12
Overall Costs for the UV /Peroxide Ground Water Treatment Unit. . . . . . . . . . . 4.18
Overall Costs for the Air Stripper Ground Water Treatment Unit. . . . . . . . . . . . 4.23
Overall Costs ior the Ion Exchange Tre:ltment System. . . . . . . . . . . . . . . . . . . . . 4-29
Overall Costs for the Electrodialysis Treatment System. . . . . . . . . . . . . . . . . . . . 4-34
Overall Costs for the Reverse Osmosis Tn:atment System. . . . . . . . . . . . . . . . . . . 4-40
Capital Costs Component Work Sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-63
Cyclic Costs Component Work Sheet (Dollars per Year) . . . . . . . . . . . . . . . . . . . . . 4-64
Summary of Alternative Costs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~-65
Summary of Alternatives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
INTERIM REMEDIAL AC'l'ION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
eg&£g\881 \iap-coc.jaa
JANUARY 1990
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TABLE OF CONTENTS.
(Continued
VOLUME II
APPENDIX
I
SECTION 1 Volatile Organic Compound, Dissolved Metals, Inorganic Compound. and
Radiochemistry Analytical Results for Alluvial Wells at the 881 Hillside
Wells/Stations in this group:
09-74, 10-74,01-87,04-87,06-87,43-87,44-87, .
49-87, 50-87, 51-87, 52-87, 53-87, 54-87.
SECTION 2 Volatile Organic Compound. Dissolved Metals. Inorganic Compound, and
Radiochemistry Analytical Results for the Building 881 Footing Drain Discharge
Wells/Stations in this group:
SW-45.
SECTION 3 Volatile Organic Compound Dissolved Metals. Inorganic Compound. and
Radiochemistry Analytical Results for Alluvial Wells Downgradient of the 881
Hillside.
Wells/Stations in this group:
64-86.65-86.66-86.69-86.02-87,47-87,48-87,
55-87.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
eg.ki\881 \iap-~oc.jaD
JANUARY 1990
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j
ACRONYM
ARAR
BAT
BDAT
BDL
CAA
CCI.
CCR
CDH
CEARP
CEDE
CERCLA
CFR
CHCl3
CMS/FS
CWA
1,1 DCA
1.1 DCA
1.1. DCE
1.1 DCE
DEHP
DOE
DOT
EE/CA
EPA
ER
FEMA
FIFRA
FR
FWPCA
GAC
Goeo
GPM
GWPS
HDPE
HEC
HS&E
GLOSSARY OF ACRONYMS
MEANING
Applicable or Relevant and Appropriate Requirements
Best Available Technology
Best Demonstrated A vailable Technology
Below Detection Limits
Clean Air Act
carbon tetrachloride
Colorado Code of Regulations
Colorado Department of Health
Comprehensive Environmental Assessment and Response Program
Committed Effective Dose Equivalent
Comprehensive Environmental Response, Compensation, and Liability Act 01
1980
Code of Federal Regulations
chloroform
Corrective Measures Study /Feasibility Study
Clean Water Act
1,1 dichloroethane
1.2 dichloroethane
1,1 dichloroethene
1,2 dichloroethene
bis (2-ethylhexyl) phthalate
Departmen t of Energy
Department of Transportation
Engineering Evaluation/Cost Analysis
En v ironmen tal Protection Agency
Environmental Restoration Program
Federal Emergency Management Agency
Federal Insecticide. Fungicide, and Rodenticide Act
Federal Register
Federal Water Pollutant Control Act
Granular Activated Carbon
Government Owned, Contractor Operated
Gallons Per Minute
Ground Wa ter Protection Standards
High Density Polyethylene
Health Effects Criterion
Heal~h, Safety and Environment
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
8cckc\881 \iap-coc.ju
JANUARY 1990
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ACRONYM
HSWA
1M/IRA
JSA
KW-HR
LDR
MCL
MDA
MCLG
NCP
NEPA
N P D ES
OSA
OSHA
PCE
PEL
POTW
PPM
PVC
PWF
RAAMP
RCRA
RfD
RFI/RI
RFP
RI/FS
SARA
SDWA
SWMU
TBC
1,1,1 TCA
TCL
TCE
TDS
TSCA
USC
USFWS
L'V /peroxide
VOCs
MEA NING
Hazardous and Solid Waste Amendments of 1984
Interim Measures/Interim Remedial Action
Job Safety Analysis
Kilowatt-Hour
Land Disposal Restrictions
Maximum Contaminant Level
Minimum Detectable Activity
Maximum Contaminant Level Goal
National Contingency Plan
National Environmental Policy Act of 1969
National Pollutant Discharge Elimination System
Oporational Safety Analysis
Occupational Safety and Health Administration
tetrachloroethene
Permissible Exposure Limits
Publicly Owned Treatment Works
Parts Per Million
,
polyvinyl chloride
Present Worth Factor
Radioactive Ambient Air Monitoring Program
Resource Conservation and Recovery Act of 1976
Reference Dose
RCRA Facility Investigation/Remedial Investigation
Rocky Flats Plant
Rcmedial Investigation/Feasibility Study
Superfund Amendments and Reauthorization Act of 1986
Safe Drinking Water Act
Solid Waste Management Unit
To Be Considered
1,1,1 trichloroethane
Target Compound List
trichloroethene
Total Dissolved Solids
Toxic Substances Control Act
United States Code
United States Fish and Wildlife Service
VI tra v iOlet/ peroxide
V olatile Organic Compounds
INTERIM REMEDIAL ACTtON PLAN FOR THE 881 HILLSIDE AREA
ROCKYFLATSPLANT,GOLDEN,COLORADO
erckr\881 \iap.'oc.jan
JANUARY 1990
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SECTION 1.0
INTRODUCTION
1.1
BACKGROUND
I
The Department of Energy (DOE) wishes to pursue :1n Interim Measures/Interim
Remedial Action (1M/IRA) at the High Priority Sites (881 Hillside Are:1) Jt the Rocky FI:1ts
Plant (RFP). Pursuant to the Resource Conservation and Recovery Act 01 1976 (RCRA) :1S
amended by rhe Hazardous and Solid Waste Amendments of 1984 (HSWA), and the
Comprehensive Environmental Response. Compensation. and LiJbi1ity Act of 1980 (CERCLA)
JS amended by the Superfund Amendments :1nd Reauthoriz:1tion Act 01' 1986 (SARA) rhis
interim action is to be conducted ro minimize the releJse oi hJz:1rdous substances from rhis
Area th:lt pose J potential long-term thre:lt ro the public he:1lth :1nd environment. Due to rhe
presence of contaminated ground w:1ter an.d ir's proximity ro Woman Creek, DOE would like
to implemenr rhis 1M/IRA PIJn because of rhe length of time It typic:1lly t:1kes ro finalize J
RCRA Faciliry Investig:ltion/RemediaJ InvcstigJtion (RFI/RI), and Corrective Measurcs
Study/FeJsibility Study (C~1S/FS).
T his 1 \1/ IR A PI:l n h:1 s b c e n iJ r c P:1 red r 0 ide n t i I y, s.: r e en. :l n d e \:1t u:lt e :\ p pro p r i:n e
interim remediJI :lction :lJtern:ltivcs. and selecr the preferred inrerim remedi:ll acrion lor rhe
Area.
This 1M/IRA Plan hJS been prep:lred to conform with the requirements for In
Engineering Evaluation/Cost Analysis (EE/CA) :lS defined in the proposed NationJI
Contingency PI:ln (40 CFR 300.415(b)(4)].
In ~'I:1rch 1987, J remediJl investigJtion undcr the Environmental RestorJtion (ER)
Program [formerly known as the Comprehensive Environment:11 Assessment and Response
Program (CEARP)] began at the twelve sites comprising the 881 Hillside Area.
The
investigation consisted of the preparatIon of detailed topographic maps, ra.diometric and
organic v:1por screening surveys, surface geophysical surveys. J soil g:\s survey, J boring and
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, COLDEN, COLORADO
eg&g\881 \i:1p-sec:l.j:m
- JANUARY 1990
P:1ge 1-1
-------
well complction program. soil sampling and ground and surface water sampling. The results
of this remedial investigation are presented in the Draft Final Remedial Investig::Uion Report
for High Priority Sites (Rockwell International. 1988a). A feasibility study was also conducted
for the 881 Hillside Area. the results of which :1re presented in the Draft Feasibility Study.
Report for High Priority Sites (Rockwell International. 1988b). Rockwell has also prepared
:1 detailed response to EPA comments on the RI and FS reports (Rockwell International. 1989).
The final RFI/RI and CMS/FS reports will address the nature and extent of soils and ground
I
water contamination, and final rt:medi:1tion of 881 Hillside Area. The final RFI/RI and
CMS/FS rcports will evaluate the elfectiveness of the 1M/IRA.
1.2
1 " 1 :r RAP L.~ 'J 0 R G A ~ 1 Z A T TON
Volume 1 of this IMIIRA Plan is divided into six sections Jddressing the detJils of the
plan. Section ::.0 of this IM/lRA Plan describes the results of previous investigations of the
381 Hillside. \..lost oi the inform:1tion included in Section ::.0 has becn derived Crom the RI
report. although chemical data has been updatcd to include all data received ro dJte.
Section 3.0 identifies the objectives of the IMIIRA. The objecti"es will define criteriJ
used to ide n t I f y J n de" Jl u J tel ;-'.111 R A options.
Section 4.0 identifies tcchnicJlly feasible ground WJter tre:1tmcnt technologies. screens
these tcchnologies based on imp1ementability. effectiveness, and costs, inregr:ltes the preferred
ground Water treatment technology into alternative 1M/IRA options th:lt Jddress thc
objectives. Jnd screens these altcrn:1tives based on implemcntJbility, cfiectiveness, Jnd coSts.
\.1ost of the in(ormation included in Section 4.0 has becn derived from the FS report, however.
this document expands upon the FS report by Jddressing treatment of inorgJnic contaminants
in the alluvial ground watcr.
IN1'ERIM REMEDIAL AC1'ION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLAN1', GOLDEN. COLORADO
81&1\881 \iap-..cl.;~
JANUARY 1!H)Q
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Section 5.0 summarizes the detailed :1nalysis performed in Se.ction 4.0, and Section 6.0
presents the preferred 1M/IRA. Volume II of this IMIIRA Plan cont:1ins the alluvial ground-
water quality data for the 881 Hillside Area.
I
INTERIM REMEDIAL ACTION PLAN FOR THE aS1 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ec&c\S81 \iap.lec:l.jan
JANUARY 1990
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SECTION 2.0
SITE CHARACTERIZATION
2.1
SITE DESCRIPTION AND BACKGROUND
2.1.1
Location and Facilitv Tvoe
.
The Rocky Flats Plant (RFP) is located in northern Jefferson County, Colorado.
approximately 16 miles northwest of downtown Denver (Figure 2-1). The Plant site consists
of approximately 6,550 acres of federally owned land in Sections 1 through 4, and 9 through
15, of T:S. R iOW. 6th principal meridian. \fajor buildings arc located within an aI"::.l 0\
approximately 400 acres, known as RFP security arca. The security area is surrounded by J
buffer zone of approxima tel y 6.150 acres.
The RFP is a government-owned. contractor-operated (GOCQ) facility. It is part of a
nation-wide nuclear weapons rese:lrch. development. and production complex administered by
the Albuquerque Operations Office of the U.S. Department of Energy.
The operating
contractor for the Rocky FI:lts Plant is Rockwell International. The facility manufactures
components for nuclear weapons and has been in operation since 1951.
RFP fa brica tes
components from plutonium, uranium. beryllium. and stainless steel. Production acti\'ities
include metal fabrication. machining, Jnd assembly. Both radioactive and nonradioactive
wastes are generated in the process. Cum:nt waste handling practices involve on-site and ofr-
site recycling of hazardous materials and oif-site disposal of solid radioactive materials Jt
other DOE fJciiities.
The RFP is currently an interim status Resource Recovery and Conservation Act
(RCRA) hazardous waste tre:ltment/storage facility. In the past, both storage and disposal of
hazardous and radioactive wastes occurred at on-site locations.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ec&cc\881 \iap-Iec2.jan
JANUARY 1990
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LOCATION OF ROCKY FLATS PLANT
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
e~&g\881 \ iao...c2,jan
JANUARY l~'
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con tamina tion.
of the past on-site storage and dispos:11 loc:ltions :lS potential sources of environment:ll
Preliminary assessments conducted under Phase 1 of the ER Program identified some
2.1.2
881 Hillside A rea Dcscriotion
.
There are twelve sites, designated as solid waste managemcnt units (SWMUs), which
comprise the 881 Hillside Area. These sites were investigated as high priority sites because of
elevated conccntrations of volatile organic compounds in the ground watcr and the proximity
01 thc sitcs to a surface drainagc. The 881 Hillside Arca is locatcd at the southeast corncr 01
RFP (Figure 2-:). A brid description of each sitc in the 881 Hillside Area is prescnted below.
~.5.
6.
-
I.
3,9.
I.
Oil Sludge Pit (SW~1U 102) -- A small pond located south of Building 881 was
used for disposal of oil sludges in the late 1950s.
.,
Chemical Burial Site (SWMU 103) -- A small pit was used for disposal of liquid
wastes southeast of Building 881 in the e:lrly 1960s.
..>.
Liquid Dumping (SWMU 104) -- An area east of Building 881 WJS reportedly used
for disposal of unknown liquids prior to 1969. This was not substantiated by
results 01 drilling the area in 1987. Thcrefore. this sitc may not exist and its
loc:ltion is not shown on the map.
No.6 Fuel Oil Tanks (SW!\1lis 105.1 & 105.2) -- Two fuel oil tanks arc located
south of Building 88 I; they arc out of scrvice and filled with concrete.
Outfall Site (SW!\1U 106) -- .-\n ovcrflow linc from thc sJnitary scwer sump
south of Building 881 daylights on the slope below the Building.
Hillside Oil Leak (SWMU 107) -- Oil WJS discovered flowing from the Building
881 footing drain in early 1973. The source of the oil was nevcr positively
identified but the oil was collccted in a skimming pond and transported off site.
There is an ongoing discharge of wa ter from the footing drain.
Multiple Soh'ent Spills (SW!\1Us 119.1 &; 119,2) -- Two areas cast of Building 881
were used for b:lrre! storage between 1969 and 1972.
10.
Radioacth'e Site (SWMU 130) -- Soils contaminated with low leve!s of
radionuclides were placed on the hillside cast of Building 88 I and covered with
soil between 1969 and 19i2.
11.
Sanitary Sewer Line Leak (SWMU 145) -- The sanitary sewer line leaked on the
hillside southwest of Building 881 in early 1981.
12.
Drum Storage Area (SWMU 177) -- Building 885 is currently used for satellite
collection and 90-d:lY accumulation of RCRA-regulatcd wastes. The building
will be closed and soil remedi:ltion addrcssed under RCRA Interim Status (6
CCR 1007-3). Ground-water contamination will be addressed as parr of the 881
Hillside Area RI/FS performed under CERCLA.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
11"'1\881 \iap-Iec2.jan
JANUARY 1990
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2.1.3
Surrounding L:1nd Use and Poculation Densitv
The Rocky Fla ts Plant is locatcd in a rural area. There arc eight public schools, within
six miles of RFP. The nearest educational facility is the Witt Elementary School, which is.
approximately 2.7 miles cast of the RFP buffcr zone. The closest hospital to RFP is Centennial
Peaks Hospital located approximately seven miles northeast. The closest park and recreational
area is the Standley Lake area, which is approximately five miles southeast of the RFP site.
Boating, picnicking, and limited overnight c:lmping are permitted. Sever:ll other small parks
exist in communities within ten miles of RFP. The closest major park, Golden Gate Canyon
State Park, locatcd Jpproxim:ltcly 15 miles to the southwest, providcs 8,400 Jcres of generJI
.:amping Jnd outdoor re:rc:ltion. Othcr n:ltional Jnd statc parks arc located in thc mountains
west of RFP. but all :He morc than 15 miles away.
Some of the land adjaccnt to RFP is zoned for industrial devclopmcnt. Industrial
facilities within five milcs of RFP include thc TaSCa labor:ltory (40-acre site located two
miles south), the Great Western InorgJnics Plant (two milcs south), the Frontier Forest Produc:s
yard (two miks south), the Idcalitc Ligh.twcight Aggrcgate Plant C:A miles northwest), and the
Jc:fferson County Airport Jnd Industrial P:1rk (990-Jcre site loc::ued 4.8 miles northC:lst).
Several ranchcs :He loc::ued within tcn miles at" RFP, primarily in Jcrrerson JnG
Boulder Counties. They are oper::lted to producc crops, raise becf cartlc, supply milk. Jnd
breed and train horses. According to the 198i Colorado Agricultural Statistics. :0.758 acres
of crops were pl:lnted in Jefferson County (tot:lliand arC:l of :lpproximatcly 4i5.000 acres) Jnd
68.760 Jcres ot' crops werc plJnted in Boulder (.Junty (total land arC:l of -105,760 acres). Crops
consisted of winter whe:lt, corn. barley, dry be:lns, sugar bccts, hay, and oats.
Livestock
consisted ot' 5.314 hC:ld of c:lrtl-e, 113 hogs, and 346 shecp in Jefferson County, Jnd 19,578 hC:ld
of c:lttle, :,216 hogs, Jnd 12,133 shecp in Bouldcr County (Post, 1989).
Approximately 50 percent of the arca within tcn miles or RFP is in Jcrfcrson County.
The rcm:linder is loe:ltcd in Bouldcr County (40 percent) and Adams County (10 percent).
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
el"I\881 \iOip-.ec2.jan
JANUARY 1990
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According to the 1973 Colorado Land Use Map, 75 percent of this land was unused or was
used for agriculture. Since that time, portions of this land have been converted to housing,
with several new housing subdivisions being st:l.rted within a few miles of the b'uffer zone.
One such subdivision is loc:lted south of the Jefferson County Airport and sever:l.l arc located'
southe:lst of RFP.
A demogr:l.phic study uSIng 1980 census data shows that approximately 1.8 million
peopie lived within 50 miles of RFP in 1980 (Rockwell Internatlon:1l. 1987b). Approximately
9,500 people lived within five miles of RFP in 1980. The most populous sector was to the
southeast, toward the center of Denver. This sector had a 1980 popu1:ltion of about 555.000
people living between 10 Jnd 50 miles Irom RFP. Recent popul:l.tion estimates registered by
the Denver Regional Council of Governments ror the eight county Denver Metro region have
shown distinct patterns of growth between the Cirst and second halves of the dcc:l.de. Between
1980 and 1985, the population 01 the eight county region incre:l.sed by 197,890, a 2.4 percent
Jnnu:l.l growth r:\te.
Between 1985 and 1989 J population g:l.in 01 il,575 was recorded.
representing a 1.0 per:::e:1t annu:l.I incre:l.se (the national average). The 1989 population showed
an increase cC :,::5 (or 0.1 percent) rrom the same date in 1988 (DRCOG. 1989).
:.l.~
Site T0Qogr1Qh'," 1nd Geology
:.1.4.1
Topogr:l.ph y
The Rocky Flats Plant is loc:lted at an elevation of approxim:1tcly 6,000 feet above
mean sea le'.'el. The site is on the western m:1rgin 01 the Colorado Piedmont section of the
Gre:l.t Plains Physiographic Province. The piedmont represents an old erosion:l.l surface along
the e:l.stern m:l.rgin or the Rocky Mount:l.ins. It is underl:l.in by gently dipping sedimentary
rocks (P:l.leozoic to Cenozoic in age) which are abruptly upturned:l.t the Front Range (just west
of RFP) to form hogback ridges parallel to the mountain rront. The piedmont surface is
broadly rolling and slopes gently to the east with :1 topographic relief of only several hundred
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
8("1\881 \iap-Iec2.jan
JANUARY 1990
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feet. This relief is due both to resistant bedrock units that locally rise (
landscape and to the presence of incised stream valleys.
2.1.4.2
881 Hillside Area Geology
~
The following geologic inform:ltion is based on the RI Report (Rockwellinternab.
1988a), and the reader is referred to this report for additional details.
Surficial \1arerials
Surficial materials at the 881 Hillside Area consISt of the Rocky Flats Alluvium.
colluvium, valley fill alluvium, and artificial fill overlying bedrock. In addition, there are
a few isolated exposures of claystone bcdrock. The study area is locatcd on the south-facing
hillside which slopes down from thc Rocky Flats terrace surface toward Woman Creek on the
south side of RFP. Rocky Flats Alluvium caps the top of the slope, and cOlluvium (slopc wash)
covers the hillside.
Artificial fill and disturbcd surficial materials are pn:sent around
. -
Building 881 and south of the building to the South Interceptor Ditch. Artificial fill overlics
colluvium at SWMU 130, and suriicial matcrials arc disturbed in the vicinity of SWMUs 119.1
and 119.2. \':lllcy fil1311uvium is prescnt 310ng thc drainagc ot Woman Creek south of the 881
Hillside Area, and tcrr3ce alluvium occurs on thc north side of the Woman Creek valley fill
allu vium.
Of particular significance with respect to contaminant transport in alluvial ground
water :He the presence of gravel layers in colluvial m:lterials overlying bedrock and near
surface. These gravcls were likely dcpositcd in a south (downslopc) direction by creep and
slope wash erosion of thc Rocky Flats Alluvium and C:ln be expcctcd to be elongated in the
north-south direction with r:lther limited extent in the east-west. The gravel layers range
between 1.3 feet to 5.5 feet in thickness.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN. COLORADO
eelke\881 \i:1P-Mc2.jlm
JANUARY 1990
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Bedrock Material
The Cretace9us Arapahoe Formation underlies surficial materials at the 881 Hillside
Area. Six wells were completed in various zones of the bedrock in the 1986 and 1987 drilling.
programs. The Arapahoe Formation beneath the 881 Hillside Area consists of claystones with
interbedded lenticular sandstones. siltstones. and occasional lignite deposits. The Arapahoe
Formation was deposited by meandering streams flowing generally from west to east off the
,+
Front R:lnge. Sandstones were deposited in stream channels and as overbank splays. and
claystones were deposited in back swamp and floodplain areas. Leaf fossils. organic matter.
Jnd lignite beds were encountered within the claystones during drilling at the 881 Hillside.
Contacts between various lithologies are both gradational and sharp. Bedrock is estimated to
dip JpproximJtely i de~rees to the east.
Claystone bedrock was the most frequently encountered lithology of the Arapahoe
Formation immediately below the bedrock contact.
Weathered bedrock was encountered
directly beneath surficial m:1teriJls in Jl1 of the boreholes and wells. and weathering appeJrs
to penetrate as much as 60 feet below ground surfacc.
The wc:lthered claystone is also
:haracterized by moderatc fr:lcturing Jnd thus exhibits higher hydraulic conductivities than
un weathered cia ystone.
Arapahoe sandstones wen: encountered beneath the 88 J Hillside Area. These sandstones
range from poorly-sorted to weU-sorted. subrounded to rounded. very .fine- to medium-grained.
poorly- to moderately-well-cemented quartz sand with up to 10% lithic fragments.
The
thickness 01 individual SJndstone beds ranged between 5 to I: fect.
INTERIM REMEDIAL ACTION PLAN FCR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
er.kr\881 \ iap-..c2.jan
JANUARY 1990
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2.1.5
S~nsitiv~ Environm~nts. Surfac~ Wat~r and Ground Water
2.1.5.1
Sensitiv~ Environments
The Endangered Species Act of 1973 (Public Law 93-0205). as amended. provides that
all federal agencies shall carry out programs for the conservation of listed endangered and
....
threatened species. Federal agencies must ensure that actions authorized. funded. or carried
out by them will not jeopardize the continued existence of any endangered or threatened
species or result in the destruction or adverse modification of critical habitats as determined
by the Secretary of the Interior.
The 881 Hillside Area is not used. nor intended for use, as a public or recreational area.
nor for the development of any unique natural resource. No unique ecosystems were found
Jt RFP during ~xtensive biological studies. Communication with the U.S. Fish and Wildlife
Service resulted in a finding of no affect on endangered species due to activities at the 881
Hillside Ar~a.
There arc no flood plains. natural wetlands. or historical/archaeological features at the
381 Hillside Area. A small wetland area has been created in the South Interceptor Ditch as
J result of the discharge from the Building 881 footing drain (SWMU 107).
:.1.5.2
Surface Wa ter
Woman Creek is an eastward-flowing. ephemeral stream located to the south of the 881
Hillside. The scream drains the southern porrion of the Rocky Flats Plant site. and delivers
water to Mower Reservoir and Standley Lake which are respectively used for agricultural and
domestic water supply (see Figure 2-3). The South Interceptor Ditch, located between the 881
Hillside and Woman Creek, extends from south of the inner west gate entrance to Pond Co:
in the Woman Creek drainage. The ditch isolates runoff from the south side of RFP (including
INTERlM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT,GOLDEN,COLORADO
erckr\881 \iap-Iec2.jan
JANUARY 1990
-------
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FIGURE 2-3
SURFACE WATER
DRAINAGE PATTERNS AT
-------
the 881 Hillside) from Woman Creek. Surface water flowing in an easterly direction along the
South Interceptor Ditch is collected in Pond C-2, from which it is discharged to Woman Creek
in accordance with the RFP National Pollutant Discharge Elimination System (NPDES) permit.
The permitted disch:uge point is designated as 007. Pond C-I receives flow from Woman
Creek. A diversion structure located upstream of Pond C-2 diverts flow in Woman Creek
around Pond C-2 and into the Woman Cn:ek channel downstream.
Along Woman Creek and
the South Interceptor Ditch, retention
ponds C-l and C-2, and the associated diversion
structures. control surface water discharge from the RFP site.
:.1.5.3
Ground \1/:1[er
Ground water occurs in surticial materials (Rocky Flats Alluvium. colluvium, terrace
alluvium, valley fill alluvium, and artificial fill) and in Arapahoe sandstones and claystones
at the 881 Hillside Area.
These two hydraulically connected flow systems are discussed
separate!y celow,
Ground W1r::- in Surtici:11 \1:1teri:1ls
Ground water is present in surficial materials :-It the 881 Hillside under unconiined
conditions. Recharge to the water table occurs JS iniiltration oi incident precipitation and
as seepage from ditches and creeks. The shallow ground-water Clow system is quite dynamic.
with large water level changes occurring in response to precipitation events and to stream
Jnd ditch tlov,',
Ground water flows from the Rocky FI:lts Alluvium at the top of the 881 Hillside south
through colluvial m:lterials toward Woman Creek. Ground water in Rocky Flat Alluvium or
colluvium is hereinaiter referred to as alluvial ground-water. Flow through colluvial materi::lls
primarily occurs in the gravel within the colluvium. At the Rocky Flats terrace edges, ground
water emerges as seeps and springs at the contact between the alluvium and claystone bedrock
(contact seeps), is consumed by evapotranspiration. or flows through colluvial materials
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
er&g\881 \iap-Iec:2.jan
JANUARY 1990
PAGE 2-11
-------
following topography toward the valley fill and terrace alluviums. The maximum and mean
ground-water velocities through colluvial materials are estimated at 780 ft/yr and 150 ft/yr,
respectj vel y.
Once ground w:lter reaches the valley, it either flows down-valley in the
alluvium, is consumed by evapotranspiration, or discharges to Woman Creek. The maximum'
and mean ground-water velocities in Woman Creek valley fill have been estimated at 650 ft/yr
and 145 ft/yr, respectively.
Bedrock Ground-W:,! rer F10w S\'stem
Ground-watcr flow in the Arapahoc Formation occurs primarily in the sandstones
.:ontaincd within the claystoncs. Ground-water rech:Hgc to sandstoncs occurs as infiltr:ltion
trom an alluvial ground water where sandstoncs subcrop beneath thc alluvium and by leakage
through the claystones overlying the sandstones.
There is a strong downw:Hd gradicnt between ground Water in surficial materials and
bedrock. V~rtical gradient data an: provided in the RI report (Rockwcll International, 1988J).
Calculated vertical gradients ranging from about: to 0.3 ftlft indicatc a hydraulic potential
for downward flow.
The: presence oi unsaturated conditions in some locations and high
vcrtical gradients where subsurface mateiials arc continuously saturatcd indicates that rhe
intervening material (claystone) has a very low hydraulic conductivity. Ground-water flow
within individual sandstoncs is from west to east. The m:1Ximum horizontal ground-water
velocity in sandstone is estimatcd at about 36 ft/yr whilc the mean velocity is estimated to be
1: ft/yr. Ground water moves at these r:w:s only if the sandstone unit is continuous or has
good interconnection with an adjacent unit. To datc, latcral continuity of sandstone units
along strike has been demonstr:lted to be small and only a few correlations have been mace
along dip.
Usable ground water occurs in the Arapahoe Aquifer. Water from the sandstones of
the Arapahoe Aquifer is used for irrigation, livcstock watering, and domestic purposes east
of RFP.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
R.OCKY FLATS PLANT, COLDEN, COLORADO
.(&(\881 \iap-.ec2.jan
JANUARY 199G
-------
2.1.6
Contaminants -- Oescriotion and Sources
2.1.6.1
Ground-Water Contamination
Organic contamination of alluvial ground-water at the 881 Hillside Area is evident.
..
However, the existence of inorganic contamin:ltion in alluvial ground-water is uncertain at
this time. This uncertainty is due to the limited data on background chemical conditions for
alluvial ground-water. Water-quality data from well 55-86, located southwest of the plant and
upgradient of all known SWMUs, is the only current data available for characterizing
background ground-w:lter chemistry. Over two years of quarterly data exist for this well.
This data has been used to preliminarily determine which constituents in ground water
:J.t the 881 Hillside Area are contaminants. Constituent concentrations in ground water at the
881 Hillside Area that exceed the upper limit of the range of concentrations in well 55-86 :J.re
presumed to rcpresent :ont:J.minanrs.
A background charactc:-ization study is currently underway ro provide more definitive
information of the spatial Jnd remporal variability of alluvial. colluvial, valley fill. and
bedrock ground-water quality.
These data \vill be used to bettcr cvaluate the nature and
extent oi inorganic contamination at the 881 Hillside and remedial action alternatives thar
address this contamination for the final RFI/RI and Cv1S/FS reports.
For this interim
remedial :J.ction. clean-up criteria are defined by :J.pplicable or relevant and appropriate
requirements (ARARs) or proposed requirc;'ments to bc considercd (TBC) as discussed in
Section 3.
Variances irom ARARs may be appropriatc in the future whcn background
chemical conditions arc adequately characterized.
Alluvial ground wa ter is contaminated with various vola tile organic compounds (VOCS)
and possibly various metals, major ions, and uranium.
Alluvial ground water at the 881
Hillside Area has been divided into three groups on the basis of contaminant migration
pathway or nature of the contamin:nion as follows:
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
er.kr\881 \iap-..c2.jan
JANUARY 1990
-------
1 )
The Building 881 footing drain discharge (SWMU 107), Le., alluvial ground water
discharging to a surface water pathway.
Alluvial ground water beneath or in the immediate vicinity of the 881 Hillside
Area characterized by the presence of YQCs in many of the wells.
2)
3)
Alluvial ground water downgradient of the 881 Hillside Area beyond the limits'
of YQC contamination.
For each of these groups, the nature of contamination is summarized in Tables 2-1.
2-2. and 2-3. Well locations are identified on Figure 2-4. Each table identifies the maximum.
minimum. and average concentrations of YQCs, metals. major ions and radionuclides tha t were
detected above estimated background concentr:ltions. The chemical-specific ARARs are also
.identified in the tables.
The YQC maximum, minimum. and average concentrations reported in Tables 2.1.
:.2. and 2-3 arc based on data from the first and second quarter 1989 groundwater sampling
as this is the only validated YQC data available to date that was categorized acceptable. AIl
other analytes reported in Tables 2-1. 2-2 and 2-3 use 1987 and 1988 quarterly data. The
grouping of alluvial ground water wells. averaging of data. and comparison to ARAR's is only
intended to provide the reader with an overview of the magnitude of ground-water
contamination at and in the vicinity of the 881 Hillside Area. Clean-up of the ground water
,0 achieve chemical-specific ARARs will be determined on a SWMU-specific basis.
The footing drain discharge is characterized by low concentrations of YQCs. and above
estimated background concentrations of a few metals. major ions. and uranium. Of the YOCs.
onl y te:rachloroethene (r-CE) exceeded ARAR in 1989. Average values for total dissol ved
solids and mercury exceeded ARAR for the inorganic constituents; however. the high average
mercury concentration is considered an artifact of including an apparent erroneous da ta
point (0.9 ug/l). Subsequent analyses show mercury concentrations to be below ARAR. The
dissolved plutonium concentration is also considered an erroneous data point because the total
plutonium concentration for that sample was less than the Minimum Detectable Activity
(MDA).
INTERIM REMEDIAL AC"I'ION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
er"r\881 \iap-MC2.jan
JANUARY 1990
PAGE :-14
-------
TABLE 2-}
VOLATILE OW;AlljC COMPOUND
ES'l'lMATED BACKGHOlHID FOH UlJI LDI IIG
ALL CUIICEtlTRATIONS
AIJOVE
;.~~
.. 0 t'J
=~2!
~..,:c:
'-E~
: iii t'J
~'Utj Analyte
~-~~
- ~>
~ C} Chloromethane
O::! Irol1lomethane
~~ Vinyl Chloride
t'J 'U Chloroethane
!! ~ Methylene Chi or ide
o Z Acetone
g..., Carbon Pi sulfide
00 1,1-0ichloroethene
C' ~ 1,l-Plchloroethane
6:;! 1,2-Pichloroethene (total)
o t'J Ch I orofor.
= 1,2-0ichloroethane
... 2-8utanone
- :5 1,1,l-Trichloroethane
~ Carbon Tetrachloride
~ Vinyl Acetate
tj Iromodichloromethane
M 1,2-0ichloropropane
~ cls-I,]-Olchloropropene
~ Ir Ichloroethene
Dibromochloromelhane
1,I,2-Trlchloroethane
Jenlene
Irans - 1,] -0 ichl oropropene
!-Chloroethylvlnylether
Iromoform
. - tt.-thyl- 2 - penlanone
!. HCllonone
letrachloroethene
1,I,2,2-Tetrachloroethane
-oluene
:hlorobenlene
:thylbenzene
:t yrene
.... ot 01 lCyl enes
t
'UC:
»
CI;:d
t'J-<
......
.00
...00
.,.0
BadgrOl.""
value
---. --
10 u
10 u
10 u
10 II
5 II
10 II
5 u
5 u
5 u
5 U
5 u
5 u
10 U
5 U
5 u
10 U
5 U
5 II
5 U
5 U
5 u
5 u
5 U
5 u
10 u
5 u
10 u
10 U
5 u
5 u
5 u
5 u
5 u
5 u
5 U
'OtlCEU'j'HA'j'j OWj
881 FOOTING DHAIU
IN ug/l
~
DISCIIAHGE
-- ------.-.
Rl'j)ortcd when the mallinlln value ellceeds Bodgrol.'"
.----.-- ----
ARAR
Value
H.III illiln
Vatue
Values"
Uells/Stations 10 which Background
Value was ellceeded
---
"-_.- - ----------
"inillllll
Averaye o'
sut,5
. No standard, RCRA Appendill IX constituent, therelore badgrOl.,,,,, value is IBe. . - Value exceeds ARAR.
"1he average is COllp.lted by 'irst delermining the arithmelic mean concentration at Individual wells/stations and then using this data to
con,XJle the arithmetic mean 'or Ihe wells/stations in Ihis gloUI). II iI dallm indicales nun-detected, the value used in the cOf11XItatioo
is one-half the delect ion I imi t-
MS- No SI8n<'Md. U-Oelect ion I imi t. J Pres"1I1 bel uw Helect ion Ilml t. 0 P,esenl in 01 auk.
Noles: "ininam, H-,. inam, and Aver..ge ba,,'d on 1989 Iii 51 al~1 ~ecolld qllarler
-------
~I
~I
~~
~>
C)O
o::!
["'0
tj'2:
[1J'"\J
z~
gz
["'''J
00
~:u
tj>-1
ogj
00
00
...
ADOVE ESTIMATED
1'1\BLE 2-1 (Continued)
INORGANIC CONSTITUENT CONCENTRATIONS
DACKGROUND FOR DUILDING 881 FOOTING DRAIN
ALL CONCENTRATIONS IN MGIL
DISCHARGE
11"1'"1 I ,'J ...h~1I Ih.. "",>1""0" v"I,,,' "H"t'lb 1I.1l ~!jl 0",,,1
. . Value cxcecds ARAR; . Avcr a!jc c>ccciis bad 91 oUlld.
"'he avelage is COl11JUtc,1 bYlaw dClel'Qlinillg the al'ilh""~lic meall concclIl'-dlion at ilKlividu.ll "'o'II,,"'Io,liulls alld thclI
COI1')lItC the a.-ithRlctic RIcan 10'- Ihc wPils/st"tiolls in Ihis !II aUI'. II a datu" IIIJlcates 1I0II'dcl('CII',I, the value used
is one'half the dcl('cI ion limit.
NS'No Sianda,d. II'Delection I illlit. .1 I'lc';..III 1...1".. Oclo'clioll 1111111.
.,..Ies: Hillin..", H"xi"..n, and Ave"aye ba';l.'d 111\ 11)87/191\8 Ou,lIlell." Data.
Badgloulld v,1111"s haso'cJ "" up/,c,' lilllil 01 v"I...,,; 1",,,,,1 in ..dl 'is Rt>.
IJ,'II,;/S'"IIe,"', '" .hi,. 'I'''''/': SUI,"
0,11 ~!jl ",,,"I AHAH H.,,, 111..811
Allalylc Value V.II'It.' V.II,,,'
---- - ---- - --. ---- --
lotal ois~olvl'd Sol id,; 161 ~IIII ~I.i, .
Chlor ide 19 "",11 1I
Nitrale'Nilr i If' a~ N I.'> II) 8. ',II
Sulhle U "'>11 'i6
lIeO}' as CICO i 79 NS "i,' .
HII\III..n
Avel ,J~(, ..I
Voll..c
All
Valll~ ".. ..
~..,(, .
l~. I
II
~~,U
216 .
~t.lj .
76
=lU~Q
'i0
_U~
:x:
.~
~
tn
a
t>:I
~
>
~
tiC:
;~
.,0<
....
,10
~co
,.0
n I', (',.,'nl in 81anl
SIJ~'i
SIJ4~
SIJ~~
SIJ~'i
SIJ~~
-- . -------- - .
--..--
IJd 1~/Slat ions in which IIdd9101l"d
V~lue wa~ c>ccl.'dcd
.- ----_._-
usi"g this d~ta 10
-------
. . Value exceeds ARAR; . Average cxcceds hdl~gro1uld.
u'he 8..e.8ge is computed by first -determining the arithmetic mean concentration at individual wd's/stations and then using this datil to
cOllpJte the arithmetic mean for the wells/stations in thii group. If a dahn indicates non'detected, the value used in the cOIIfJUtetion
is olle.half the detection limit.
NS'No Sundar". U'Oetection limit. J PrCS('lIt h,'low Dctection limit.
Notes: Hinimlln, ""xin"I!, and A..erdge based on 1987119118 alia. terly Data.
Background vailles based on upper limit 0' ..allies 'olllld in well 55.86.
~clls/St;ltlons in this gro"p: S~45
" ;Q~
"0
~o
-x~
g:~
~"'1
u'~~
?'i
~ (jJM
...out1
.~.~~
~>
o~
0....
r--O
t1Z
Mou
~~
o
r--"'1
00
E~
ogj
Analyte
------"
AlllnilUln (AI)
Ant Imony (sb)
Arsenic (As)
Bar iun (Ba)
Beryll illil (Be)
Caaniull (Cd)
C81dun ([a)
[eslull ([s)
Chromilin ([r)
Copper «(u)
I rOil (Ie)
g: lead (Pb)
.... 1I th i un (l i )
;J: .
t=: "89nes I 1111 (Hg)
t< Manyanese (HII)
~ Mercury (Hg)
~ "01 ytxfe'IIIII(Ho)
~ Nickel (Ni)
Potllssiun (K )
Selenilill (Se)
Sliver (Ag)
Sodilm (Na)
Strantiun (Sr)
'hall ilIA ( II )
hnadilill (V )
llnc (111)
~
ouC::
~~
M~
.... ....
.10
....10
-, 0
"
ABOVE
'I'ABLE 2-} (Caut
DI SSOLVED METAL CONS'I'ITUEN
ES1'IMA'l'ED BACKGHOIIUD FOH BU I LDING
AI.l. C()UCEUTHATIONS
DISCHARGE
LI)
CONCENTRATIOUS
881 FOOTI NG ()J~A 1 N
IN mg/l
Reported whell the max in";1 ....Iuc exceeds Badground
-.. ----_. ----- .... - _.- ---_.-
Oetec. BadgrOlud ARAH Hax ....." H 1111111111 Avcrdge 0' Uell s/Stat ions in which Badground
t imi t Value Value 11.11 lie lIalue All Values" Va'ue was exceeded
..--- --- - - - - ------ . .--.
0.0290 0.22} 5.0
0.0600 0.06 U 0.06 II
0.0100 0.01 U 0.05
0.0100 0.011 1.0 II. 1~41 0.1547 .. !L Q!~~ s~45
0.0050 0.005 tJ O. I
0.OU50 0.005 U 0.01
O. 7500 }i.8 NS 1!~.H2 78.U .__!!~ s~45
0.0200 0.02 tJ NS
0 . 0 100 0.026 O.O~
0.006} 0.046 0.2
0.0069 0.162 O.}
0.OU50 0.016 0.05
0.1000 O. I U 2.5
0.0500 5.9 NS 21.11 19.021 -~~ S~45
0.OU51 0.066 0.05
0.0002 O.OOOltJ 0.002 11.',111 . 0.0002 U _!UQ~! ' S~45
0.0220 0.022 U O. I
O.OHO O.OH U 0.2U
0.5000 0.8 NS j.1I 3.8 ..!,~H! S~1,5
0.0050 0.OU5 U 0.01 0.0111 , 0.OU5 U _Q,QQll SUI,5
0.0016 0.U8} 0.U5
2. 1000 13.1 NS 1,6 I, 1.161 -- .._~~ S~45
0.0200 0.15 NS 0.1 0.61,11 .J!~?Q~ SUI, 5
0.0100 0.01 U 0.0' U
0.021,0 0.021, O. I
0.0200 0.161, 2.0 1I.t. 0.U1,26 JU!l~ S~1,5
-------
'1'1\111.1:: 2-1 (conlillued)
() I SSOf,VED HI\IH OCUEH I S'f.HY CONCEN'I'HI\'I'IOfW
ES'fIMA'I'ED nACKGHOUND f'OR nUl LDING 881 FOOT I NG unl\l N
ALL CONCENTRATIONS IN pci/l
I
!. ;Q2
:~0;::J
Ii OM
;:: ~~
:~..,~
IfS~
.:1/):::
, t'S
'.. 'U tJ Anal Vte
:'~~
~>
C) ~ Gross Airlia
0.... Gross Beta
(;~ Strolltiun 89,90
£'1'0 Plutonilm 239, 2'0
.:.! ~ Amer iduQ 2'1
Oz Iritiuo
g.., 10tal IJlallh.o
00
E~
og;
00
00
...
ADOVE
---- --
BadglolJlk' All All HaK i 11..0
Value Value Value
---.----- -_u..------ -- - - -
S IS J].'
" SO IS. 1
1.0 ... 8
.01 ... I'> 2.51
.01 ... ,
'00 ... 2lHIlJO
1.8 ... '0 10.2
~
t-<
I/)
a
t'S
~
>
DISCHARGE
lI",h>1 1t',1 "h"11 II..: 111.'0111'"" ~.".... ,'0' e,,,I., U,...~!jIO"II.
~,'II~;/SLI' lon', III IIIi!; .,. ""I': S\J;,S
......
,10
...10
-------
.~:::
811 0""
t-ot-J
~ ~ ~toi
ClIo(
~"J
~-~~
~ t-J~
~entoi
t-.>'Utj
~-~~
~>
o~
O-
rO
tjz
toi'U
~E
o
r"J
00
E~
og;
""
CII
...
~
'Uc=
~~
toio(
... ....
,10
....10
10 0
A BOV E
Allalyle
-------
:J:
-
r
r
en
6
M
>
~
>
Chloromelhane
Bromomethalle
Vinyl Chlodde
Chloroethalle
Hethylene Chloride
Acetone
Carbon Oi5ull idc
1,1-0iehloroethene
',' Olehloroelhane
1,2 Olchlolocthcllc (Iolal)
ChlorofO/IO
1,2-0ichlo,oclhallc
2-8ulallo/le
I, ',I -I riehloroelhanc
Carbon lelrachloridc
Vinyl Acetate
8ro/llodlchlorowclhallc
I.Z-oichloropropallc
cis-',J-Oichloropropcllc
Iriehloroethene
Dibro/lloehloromethallc
I, ',2-lriehloroethanc
Bcnlcne
Irans-',J Oidlloroprop('lIc
2 - Chi oroe Ihy 1 v illyl el her
8,olUQform
4 - Hethyl - 2 pClIl,lI\OIlC
2-Hellanone
letrachloroethcne
',',2,2-lctra(hlo. octhallc
loluene
Chiorobclllcnc
Ethylbenzene
Styrelle
lotal lCyl CIICS
TABLE 2-2
V(H .AT I LE OW;/\U I C COMPOll
ES'I'I MATED BACI
-------
r
'";U::;
.. 0.&0
1:0""
~~t'1
g:~i!
~"J~
;~~
1 ~k:
n...M
... v t1
~'E~
:i>
o~
0...
1""0
t::IZ
~'U
.~
gz
r"J
00
E~
og;
C»
C»
...
Lo,
"U~I
~~:
M- 0 :
Analyte
-..--..
:x:
F
r-<
In
a
t'1
~
>
Alunirnu (AI)
Ant I...:my (Sb)
A!"senic (As)
BlJrhm (Oa)
Oel yl I hi" (Oc)
Cado"iun (Cd)
Calcilill (Co)
Cesiun (Cs)
Chrulli Ull (Cr)
Copper (Cu)
Iron (Fe)
lead (Pb)
Ii thil.. (l i)
Magnesiun (Hg)
Mallganese (HII)
Mercury ("g)
Mo I ybdellllll( Ho)
Nidel (Ni)
potassiuII (I( )
SeleniuII (Sc)
Silver (Ag)
S(.dilm (Na)
Sirollt iUII (Sr)
Iholliun (II)
Vanadhn (V)
1 illc (ZII)
AUOVE
Delec.
Limit
0.0290
0.0600
0.0100
0.0100
0.0050
0.OU50
O. 1500
0.02UO
O. ° 100
0.0061
0.0069
0.0050
O. 1000
0.0500
0.0051
0.0002
0.0220
O.OHO
0.5000
0.0050
0.0016
2 . 1000
0.0200
0.0100
0.02t.0
0.0200
TABLE 2-2 (CoIILillllell)
DISSOLVED METAL COUS'l'I'l'lJEU'r COUCEUTHATIOUS
ESTIMATED UACKGIWUtW FOH ALLlJVIAL WELLS A'1' TilE 881
A 1.1. COUCEU'I'HA'l' I OUS I U meJ/ I
Oad:grUlII"J
Value
0.22J
0.06 II
0.01 II
0.011
0.005 II
0.1105 II
H.8
0.02 II
0.026
0.0t.6
0.162
0.016
0.1 II
5.9
0.066
0.000211
0.022 U
O.OH U
0.8
o . 005 U
0.08J
1 L 1
0.15
0.01 II
0.021,
0.161,
III LLS IDE
1I",...lleJ whell the 111,1.1"'." v.llue e'lI,cd~ lI,jdYloIIIIll
ARAR
Value
H,IX i 1111"
Hllli"II"
Avela!je ,,'
-- ---- -
.. -- -.
~ells/Statioos in which Oockgrol.d
Value was exceeded
- ---. -_.
U9/1" lOll" 01,81, 5281
O~74, 0t.87, 0687, '187, 5287
U~/t.,
Ot.87
0t.87
'J87
0687
U~11,
0971"
01,81,
0681
1014,
0t.81,
09710 ,
0914,
lUll" UI,61, 0661, 'J81, 5261
1071" 0'81, 0687, '187, 5281
0687, '187, 5287
'J87
0687,
107',
1071, ,
'J81, 5281
01,87, 0687, '187, 5287
01,87, 0687, '387
U971" 1071" 01,87, 0687, 'J87, 5287
0971" IU71" 01,87, 0681, 1,387, 5287
UI,87
lO7l" t.587, 5287
. . Value exceeds ARAR; . Average exceeds background.
ulhe average is COO')lJled by 'irst 'delerlllining the arithmetic mean concelliralion at irillivid'Iai wells/Slat ions arlll Ihen using this data to
coof'JUte the arithmetic mean for the wells/statiolls in this group. If a dalliD irillicates lIowdclected, the value used in the cOOf'JU18tion
is one'half the detection limit.
NS 'No Stallll.,,-d. U'Oetect iOIl I illl' t. J 1'1 esenl helow Oetect iOIl Ill\Ii I.
N,lles: Hini"u", H.l.in.m, arlll Avcr.IYc based on 1987/19118 Oual terly Oat,j.
Bad!). olllld vallics based 011 IIl'l'er I imit of v.)I....s 'oUlld in well 5':1 86.
Udls/SI,.lioll~ ill this '1""'1" 119 It. , 10/~, 11111/, 111,87, 11687, 081, t.~87. ~981, ':11111/, 5111/, ',281, ':IJ87, 5t.87
Vallie
Valuc
All
Va'uc~,..
5.0
0.06
O.OS
1.0
0.1
0.01
NS
NS
0.05
0.2
0.)
O.O'}
2.5
NS
0.05
0.002
0.1
0.20
NS
O.UI
0.05
NS
NS
0.01
0.1
2.0
II
0.ulY6 .
0.UU6 J
0.U181
II. lilt.
0.U582
- ~U!???
1':1'1. Y'J
0.0t. J
0.0782 .
0.9515 .
o 11 59
8'>.6~1
0.U2 II
O.OIOU U
0.006J II
0.01l6J II
!~~
O.UI1I
0.0066
.Q:Q?H
o.OJn
0.1
7L2It.
0.9586 .
O.OOOJ
0.0265
0.8MI, .
12. J
S. 2 I
0.02
19. S~ 7
0.0051 U
0.U002 U
o.ono II
0.0510 U
0.5
O.OOJ J
.Q: !?~?
i,I,
~Q~~9~ .
0.0001
0.0122
. Q: !!!??
.~:}~QQ
-Q:~?~~ .
1~ \.It.
2.~291
121,.7~
0.7n6
-. !~Q
_L~H~
0.0125
.Q:~Q~l
II
0.02~0 II
0.U200 U
0.05U'!
2.t.SUO .
-------
,
~ :U2
t'°oi
'" O~
-X~
1:-<
~'"J
ii'~~
1l oi!(
! 111M
~'Utj
~.~~
:-I>
g~
{;~
M'U
:z:~
gz
......,
00
E;U
O~
~
'U~
~~
M-<
N'"
.OO
..oo
...0
ADOVE
TABLa:; 2-2 (Con ucd)
I NOUG1\NI C CONS'!'lTUEN'l' CONCEN'l'UA'l' HHW
ES'rIHA'l'ED DACKGlWlJUO FOR ALLUV I AI. WELLS A'1' TilE
1\(,(. CONCENTRA'l'IONS IN HGI I.
081
HILLSIDE
1<1'1',)1 II'" "hl'lI "11' 111..- III" UII v.a'uc L'J.ll't.:d'. 11.11 ~ 91 olilid
- --.----- - --. - ------
!tad!)I,,,,,..1 AI . 0.02 II ___H ' 09lt,. 10lt" 01,87, 1,187
Sullale 21 2~0 7011 . IH -.?eu ' 09lt,. 10lt" 01,87, 0687, 1,587, 5287
"C01- 8S CaC01 79 NS )II.! . 112 . ---- ~!? 09lt,' 10 It,' 01,87, 0687, 1,587, 5287
011
011
...
:I:
...
t"'
t"'
In
a
M
~
. - V.,llIe Cllcecd~ ARAR; . Average CUI'..'''', I,,,dgloll/ld.
"lhe ovel.lge is cOilflUled by i.fSt detclmining Ihe 011 ilhmelic mcall concelll/ation at ilU..hvidll.,1 wells/sial ions illld
cont",tc the arithmctic nlcall lor Ihe wl'l Is/:.I"I 1011'; in Ihis !J10llp. II iI dahln 11I11I("leS 111111 ""'I.cted. Ihc vitlliC
is olle-half Ihe "<'tecl ion Ilmii.
NS Nil Stand"..!. II'Deleclion I i",il. .I 1'"",,'111 I."'"" 1J.~IClliulI Ilmli.
Nule,; Hinimu". H.,.inuln. alld Avel'I!Je La',,'d 011 1911/119118 OIl.lIlerly Oal".
lIiIC~gl 0111111 vallie, b;ls,'" 011 upl,er .11I"il 01 v.II.,,", 10111\(1 in well )S 86.
y"I1,/SI"II"II', in l!oi, ~II'"II': 11')".11111..11111".11/.11/. lit-III, 0111, I,~II/. I,9U/. '11111/. ~III". './11/. ~587. )~81
Ihcn using Ihis data to
lI~ed in the COlllJlUtat ion
6 1'1 C'.' III
-------
.. :u s;
;'o~
~~:d
"-<:::I
~~~
~.~~
~ >itC
~ IJ)M
i~~
- >
g~
1"'0
tJ2
M"II
?:~
g2
1"''':1
00
E:d
o~
~
"lie::
~~
M-<
"...
,10
ulO
..0
TAULE 2-2 (Continued)
DISSOLVED HADIOCtiEMISTRY CONCEN'rRl\rrION~
ESTIMl\'I'ED Dl\CKGHOIINU Fon ALLUVIAL WELLS AT TilE
ALL CONCENTRA1'IONS I N pC i/ 1
ADOVE
Allalyte
Bady/.ound AMAR HaA in.'11
Value Value Value
----~.- -
5 15 ]19 t
1(, 50 286 t
1.0 ... 8 2.1
.01 ... 15
.01 ... (,
(,00 ... 2UOOO 1/1
1.8 ... 1,0 5(,.6 t
Gross Alpha
Groll leh
Strontl~ 89, 90
Plutonhn 2J9. 21.0
ARlerlc\lm 2lo1
, r II \I..
lohl Uraniun
OJ
..
...
:x:
...
t"'
t"'
IJ)
8
M
~
>
881 IIILLSIDE
IIq)IIIIl',J ..h,'n 110" 111.101".1" ~.llu" CAl""'1s B.Jl~9Iu1ud
- -- ----~- -- -- -- - ---- ---- .
- - -- .. ------ ---- ----
Hillin..n
Alle,,,y" 01
All Values"
\lei Is/Stal iOlls ill ..hich Background
Value was e.ceeded
Value
-- ----- ---.------- -
2.00 -~! t 09/l" 10/1.. 0181. 01.81, 0681, I,J81, 5281
".00 25 091", 0(,8"1. 0681, "J81, 5287
1.00 (~ 0(,81, 0667
-(,00.00 212 01.81
8.1 -1~ 097lo, 10llo. 0161. 0(,81, 0661, 1,]67, 5287
t - v.1luc e.ceeds ARAR/; - AIICI "!I" CAl'''"",; 1"".~!l1 OIII"\.
"'he allel8ge is cO","Jted Lyllr~t delermini"g Ih" a,"hmetic meall cOllc('"lralion lit i"rJiliulual ..,:lIs/:.I.ltiuns and Ih(,11 u~ing this d.1Ia to
cc.,..ute the arithmetic nleall lor Ihe .."lis/stat lOllS in this group. II a dahm inchcates a Ic~s than (<) v..llle, or the cOlnning error
for a dahn is gleater thall the dahan, the value u:;,'d ill the computation is one half th,~ minin.1ID delectable aClivity (HOA).
NS-No Stand.ud. U-Oetection limit. J'Pres.."t udtlw Detection limil. B !'resent illlllilllk ".HOA.Hillin...n IJetectaLle Activity
Notes: Hininun, H...in..n. and Allerage based on \'.181/19118 Ou.lIleriv Data.
Backgroulld vallies Uilsed Oil IIpper I imil 01 11.11","; fuullrf in welt 55 86.
\ldls/Slallone. in this !II 0111': 09/1.. 1011.. OIlJ/, 111,11/, 11681, 087, 1.1.81. 1.0;81, ~IIII/. ~III/, ',.'11/. ~\8/, SI.81
-------
~;.J2
~0>-l
~~~~
=~
~..,
i-E~
:UlttJ
~ogtj
~-E~
:-I>
c;)~
0....
r--O
tjz
ttJog
~~
o
r--"'"
00
E~
o~
00
III
....
ABOVE ESTIMATED
Analyle
-- - ~
:J:
....
r--
t;
8
ttJ
Ch I or{)joe I hillle
Bromomethllne
lIinyl Chloride
Chloroethane
Hethylene lhloride
Acetone
Cllrbon 0 i sui 1 ide
1,1-0ichloroethene
1,l-Olchloroethane
1,2-0lchloroethene (tolal)
Chlorolor.
1,2 -0 Ichl orocthane
2-Butanone
1,I,l-trichloroethane
Carbon tetrachloride
IIlnyl Acetate
Br OIIlOd I ch 1 or{)jllCthane
1,2'0ichloropropane
ci s -1, J.O ichloropropcne
If Ichloroethene
o i bromochl orOlllCthane
1,I,2'Irichloroethone
Benzene
lrans'I,J-Oichloropropcnc
2-Chloroelhylvinylelher
Bromoform
4-Hethyl-2-pcntilllonc
2-Heunone
letrachloroethene
1,I,2,2-letrachloroelhanc
loluene
Chlorobenzene
E thylbenzene
Styrene
101111 Kylencs
e
...
~~
ttJ-<
~....
~8
B..dy.oII.,,1
lIalue
10
10
10
10
S
10
S
S
S
S
S
S
10
S
S
10
S
S
S
S
S
S
S
S
10
S
10
10
S
S
5
5
5
5
5
'1' 1\ B I.E ')
VOLATiLE OW;I\IIIC COMI' ) COrlCErI'I'HI\'l'IOrl~
BI\CKGHOUND FUH ALLUVIAL WELLS nO\-INGHADI F:NT OF
ALL COUCEN'I'HATIOUS 1 II UfJ/l
TilE 881
IIILLSIDE
IIi'purled ~hen Ihe m;IA'"1I1 value cACceds Badglol.ad
---------
_.._--~-~
~clls/Slat 10115 in ~hich Backgrolfld
lIalue was eMcel'ded
I) U 11 B . I) U J 0281
50 '9 2 J 1 5581
5 U
1
5 U*
I)
200
5
6lo86, 0287
. No slllndard, ACRA Appel)(lill III constituent, therelore background value is 'Be. . - lIalue cACeeds ARAA.
"'he averlge is couputed by !lrst determining the arilhmctic mean concentration at Individual wells/stations alad then using this dati to
coo,>ute the arithmetic mean for the ~ells/stations in Ihis group. If II dalun indicates non-detected, the value used in the coop.Itation
is one'hal f the detect ion limit.
NS-No Stand,lId. U-Oeteclion timit. J Pres.'nl below lIeleClion limil. B-Presenl in 81.",~.
Notes: "inill.m, H,'AiIlAm, and Average basl'd on 1989 1 i. st 111111 second qualler d..ta.
Background \/alues based on upper li.llit of v..lw's lound in well 1)5-86.
~clls/St,'lions in Ihis !1.OIII': M86, 651\6, t.l.t\t., 1.986, 11281, 4101, 4881,5581
ARAR
Vallie
Avclilye 01
H~IJI IIIA.n
H.IIIIIIIII
V.,llIc
Vat 1It"~.. .
All
V.II""
II
II
II
II
II
II
II
II
II
U
U
II
II
U
II
U
II
U
II
II
U
II
U
II
II
II
II
U
U
II
II
U
II
II
U
5
~
II
5
U
--- ~ .
5
1S
J .
II
2000
-------
. ;U'"
811 O~
:OM
:=:!i!
~~~
~'~i:
'>i~
ft tIS pj
...'UtJ
~'E~
:J>
c;)~
0....
t"0
tJ2
M'U
~~
°2
o
t""J
00
E~
og;
~
'UC:
~~
M-< .
.. ...
'10
.. 10
"'0
IHIILE 2-) (culltiuued)
DI SSOLVED METAL COUS'I'I'i'IIEU'!, CONCEUTHA'l' I UUS
UACKGROUlW FOH ALLUVIAL WELLS nOWUGHAIH Ern OF
ALL COUCEUTHATIOUS IU IOg/l
ABOVE ESTIMATED
Anillyte
...
DO
...
A I un I r!llil (AI)
Ant Imony (Sb)
Arunic (As)
BllrlUII (Ba)
Beryll iun (Be)
Caunhln «(d)
£IIlclun «(a)
CesiUII «(s)
(hromhlD «(1')
(opper (Cu)
Iron (Je)
lead (f'b)
llthiun Hi)
Hagnes It.. (Hg)
Hanganese (Hn)
Hercury (119)
Holybde1un(Ho)
Nickel (Ni)
Potllss lUll (I( )
Selenlun (Se)
Silver (Ag)
Sodlun (Nil)
Strontiun (Sr)
(hall hm (II)
V anad i un (V )
lill\. (In)
:z;
~
t"
en
....
tJ
M
~
M
).
De t ec.
l imi t
0.0290
0.0600
0.0100
o . 0 100
0.0050
0.0050
0.7500
0.0200
0.0100
0.006J
0.OU69
0.UU50
O. 1000
0.0500
0.0051
0.OU02
0.0220
O.OHO
0.5000
0.0050
0.OU76
2. 1000
0.0200
O.OIUO
0.02~0
0.0200
Oal~grotJIld
Value
O.22J
0.06 lJ
0.01 II
0.011
0.OU5 II
0.U05 II
JL8
0.02 II
0.026
0.0'6
0.162
0.016
0.1 u
5.9
0.066
0.000211
0.022 II
O.OH U
0.8
0.OU5 U
0.1I8J
U.1
0.15
0.01 II
0.02'
0.164
'I'll E 881 III LLS I OE
lIepur t<:d Wlllil Ihe 01.10111.." v.tllle CM:Cllb Oac"9loll/ld
ARAII
H". illil"
HIIIIOIiO
Avcla~c 01
All Volllc,;"
0.0"1
0.OJ21
.!UW~
. - .!!~
0.0621
'0:0,,6
0.0019
-- -- H
JU!~~ .
.!L QQQ~
0.020'
.!UH? .
.~:~~~l
JL Q??l .
_--.n~
.1 ,Q?Q~
0.0110
JU~~?
- -----
--- ~--- -
Ucils/Stotions in which Boc"ground
Value was e.cecded
- -------- --
- +. -- -. - -. u_' .----.-
Value
V a "Jl~
VJlue
6586, 0287
6986
6'86, 6586, 6686, 6986, 0287, ~887
6'86, 6586, 6686, 6986, Ul87, ~887
'881
6586, 0287
6586, 6686
6'86, 6586, 6686, 6986, 0287, '887
6~86, 6586, 6686, 0281, '887
6'86, 6986, 0287
6'86, 0287, 4887
6'86, 6586, 6686, 6986, '887
6'86. 6586, 6686, 6986, 0287, ~887
6'86, 6986, '887
6'86, 6586, 6686, 6986, 0287, '887
6~86, 6586, 6686, 6986, 0287, '881
61.86
~887
. ' Vi)&ue eKceeds ARAR; . Average e.cc"ds badgroiMId.
"(he average is cOllputed by' iiisi-determining the arltlunetlc mean concentration at irldividuill wells/stations arid the
coopute the arithmetic mean for the wel&s/sti)tiolls in this group. If 0 dahlD irldlcates nun-detected, the value U~
Is one'half the detcction limit.
NS'No Stalld.ud. U'Oclection limit. J Prcscnt lIciow Detection limit.
Notes: Hinlmun, H.lliinun, arid Average bascd on 1987/191J8 allal ter&y 001101.
Backgroulld values lI.ISI.d on upper &lmil of valucs foulld in wel& 55 86.
UCl&s/SI.11 iOIl" in this !I"JIJP: 6/.86, 6506, 661\1., /..986, 11281, HEll, ~881, ~,)81
5.0
0.06
0.05
1.0
0.1
0.01
NS
NS
0.05
0.2
O.J
0.05
2.5
NS
0.05
0.002
0.1
0.20
NS
0.01
0.05
NS
NS
O.UI
0.1
2.0
0.2600
0.0618 .
0.02\10 U
0.02 U
lJ
II. H III
0.0" 1
lYII.H
2'.18'
II. JUO .
O.~065 .
0.112'
0.OU6J U
0.0069 U
0.001 J
9'>.5l1l
0.5~H .
0.006 .
0.U5B
1.1821 .
1.0
0.21, ,
5. '611
0.0051 U
0.0001 J
0.0220 U
O.OHO U
0.7
0.0112 J
211. "
2.9lJ66
21.12J
0.11,50
lJ
0.OJt.8
2.'559 .
0.02'0 U
0.02
-------
. ~....
-- oZ
It'o~
~:
o~
0-
r-oo
tJ:z:
1'1"'IJ
~~
o
r-o""
00
E~
ogI
...
...
...
~
"'IJC=
»
0::0
1'1-<
......
. tD
... co
.,,0
'1'/\111.1:: 2-] (Colilillued)
I NORG1\tH C COUSTITUEN . NCEN'I'RA'l'IONS
DACKGROUND FOR ALLUVIAL W . DOWNGRADIEN'I'
AI." CONC1::N'I'RA'rIONS IN MG/I.
DOVE ESTIMATED
.
OF TilE 881 IIILLSIDE
11"1",'10:.1 ~Iwn .h" '"...111.." v..I0... l'Af.'c.b O..dglolliid
8a( ~ YI 0111,,1 AI/All tl..... 11111 Mia
AllillylC Vaillc Valli!: V.., IU'
----.-----
IOlal Oissolvcd Sol id" 16/ 1,00 £11111 .
Chloride 19 250 818 '
Nilrale'Nitrilc as N 1.5 10 1,. 2'J
Sullale 21 2511 2/0 .
H(03- as Ca(OS 79 NS 1,111 .
'\
H''''II".n
Vaillc
16\
17.U
0.112
21,.8
11.9 .
U
:x:
...
r-o
r-o
\.0
a
t'J
~
1'1
>
A'WT' ..~t' ,..
All
v... tW',..
-------------
Udl~/Slalions ill ~hi(h Oady,ound
Vaillc ~il:' cO( c..clcd
..--.- - - - - . ----
6l.66, 6586, 6686, 6986, 0281, 1,887
6l.86, 6586, 6686, 6986, 0287, 1,881
6986, 0281
61,86, 6586, 6686, 6966, 0281, 1,881
61,86, 6586, 6686, 6986, 0287, 1,881
. . Vaillc CKc{'cd'; ARAR; . Av,,',,!)c cu 0'."'1:. b.II .gl 0111 Ill.
"'he 8velage is conf)Ulcd by 'JrSt delermining Ihe a. ilhnoelic mean concentralioll al in,livllh.1 ~cllsJSlilliolls alld Ihell using'
(on....Jle lhe arilhmelic mean lor Ihc 14"'1:;/:.1;011011'; in Ihis group. II a daho IIdlCillcS '"III'delecled, Ihe value uscd in lh
is one-hal' Ihe cll'INlion linll:.
NS"Nu Slalld"rol. U'Octc,lion I imil. J 1'10....'111 I...III~ OelC'(lion 1.0111.
Nule~: Hininlln, H,..jnlln, alld Averilgc ba:.ed "n ..,,117/19118 OUilllerly Oala.
OadYlouII 86.
UelI5/St.,I'IIII5 in Ihi:; !J'llllfI: 6t.1I6, 6"11/,. /,/,1'1., //11\/" 1128/, 1,71\7, 1,1\81, '>'>1\/
--- !H~ .
-_J~~
0.6lt.
1J9
-_?~~
o 1',,,,,"111
-------
: ~2
~o~
:~i!
~..,~
~S~
&1113:
n 'n t'S
... .. tj
~'E~
.>-1 >
gH
1""'0
tjz
t'S'II
~E
o
1""'''''
00
~~
t)>-I
ogj
00
00
...
ABOVE ESTIMATED
TAUI.E 2-] (continued)
DISSOLVED IU\IHOCIIEMISTHY CONCEN'l'RA'fIONS
BACKGROUND FOH ALLUVIAL WELLS DOWNGRADIENT
ALL CONCENTRATIONS IN pci/l
OF TilE 881 HILLSIDE
1I~1',)fled when Ihe 11I...,II..n v..lue eAle~d~ Bad.glolMd
- -..-'.-
Badgrol.'" AllAR Haollilin
Analyle I/alue I/alue I/alue
----.-.
Gross Alpha S 1S 100 .
Gro51 lete H SO 251, .
SHonl tI.. 89. 90 1.0 ... 8 5.6
P&utonh.. 239, 21,0 .01 ... 15 0.211
AaoericilO 21,1 .01". I,
Irlth.. 1,00 ... 20000 510
1018& Ur enil.. 1.8 ... 1,0 19.0
- - ----
------
--.-....-
Udl~/Sla\lonS ill which Bad.glol...J
I/alue wa~ eHeeded
Ave. aye 01
Hlnill..n
I/alue
All
I/alues..
--------
< 2.00 19. 61,86, 6586, 6686, 6986, 0281, 1,881
1,.00 -;8 6986, 0281
< 1.00 ----"1.j 6586, 6986, 0281
0.01 o.oi, 0281
<1,00.00 211 6986
1.80 ~~ 61,86, 6~86, 6986, 0281, 1,881
:x:
....
I""'
I""'
tJ>
a
t'S
~
>
~
'Oc:
t~
IWJ-<
. - I/.~I\le e.ceeds ARAR/; - Average e",c('11s bac~groun"'.
"Ihe 8verage Is cootJUled hv--',rst dctera,ining the al ithmetic mean conccnlralion at individ"al w"lIs/stations a,d then using this dala to
coo.lUle the erithnoetic "lCall 'or the loIells/stal iOlls in Ihis gro\lp- If a dah.. indicales a it'5S than (<) value, or the counting error
'or a dah" is grealer than the datlln, Ihe value \lSl'''' in Ihe [(...)\llal ion is one hal' the n,iniaun delectable act ivity (HOA).
NS'No Sta,dard. U-!Jeteclioll Limit. J'Pres<:nl below Deleclion limil. B.present in Blank ."HDA'Hiniaun Detectahle ActivilY
Notes: Hinin..", H;ui"..", and Average based 011 1987119118 Qllalterly Dal...
BadgrOilltd values b.lsl'd 011 upper lill.il 01 v;,llIcs 'olllld in well 55,86.
uclls/Slillioll~, in Ihis !Jlllllp: MII6, 6"116. t.6116, t,9116. 112U/, OUT, ~881, 5')Ul
W'"
'10
0-.>10
010
-------
-'
.
.
~
[~-
SCALE: t' =300'
EX PLANA TION
,
62-87BR
.
64-86
o
BEDROCK MONITOR WI
ALLUVIAL MONITOR WE
9-]4
.
PRE-1986 WEll
''\
) ~
V
-f-" vr
!/ ,---
-, ,( /...,
SOUD WASTE MANAGB
UNITS
-,
@)
"'.
\
FIGURE 2-4
WELL LOCATIONS AT 88
-------
Alluvial ground water at the 881 Hillside Area is characterized by significant VOC
contamination. High concentrations of VOCs are notably present in the vicinity of SWMU
119.1 at well 9-74.
The maximum concentr:1tion for most of the metals exceed estim:1tcd
alluvial ground-water background concentrations and ARARs. However, only the ARARs for.
manganese and selenium arc exceeded for the average concentrations. Total dissolved solids,
chloride, nitrate-nitrite, and sulfate have avcrage values that exceed ARARs.
Average
dissolved strontium and uranium concentrations exceed background, but not ARAR.
.
Downgradient of the 881 Hillside Area, the alluvial ground-water chemistry is
characterized by thc absence 01 VOC contamin:uion. with the exception of low concentrations
of methylene chioride. :lcetone. :lnd tetr:1chloroethcne. The methylene chloride and acetone
:lre suspected iabor:ltory contaminants because 01 their presence in laboratory blanks. The
tetrachloroethene W:lS detected only in the first quarter 1989 in wells 64-86 and 2-87 at
estimated concentr:ltions below detection limits. :lnd was not detected in these wells during
second quarter 1989. Average concentr:ltions of several metals. major ions. and strontium (89
- 90) Jnd ur:lnium are :lbove the cstim:ncd background for alluvial ground w:\tcr.
Concentr:ltions of these inorganic constituents :lre somewhat lower than at the 881 HiIlside
Area, and nitr:ne, chloride. :lnd sulfate do not exceed ARAR on the average.
Inorganic
con s tit u c n t s h J \. e J p P:l r c n t I y m i g r:1 t cd:" rom t h c 8 8 I Hill sid cAr ca. but 0 r g ani C ::.0 n tam i n ant s
have not migratcd to :lny appreciable cxtent. There was only one occurrence of plutonium at
:l concentration above the minimum detcctable activity (MDA). This occurred in well :-8-:-.
Of the six plutonium concentrations me:lsured at well 2-87, all except this one were below the
\1DA.
Voi:Hiie organic compounds arc Jt high concentrations in the proximity of SWMU 119.1.
but decre:lse to non-detectable; concentrations within
approximately 300 feet (Rockwell
International, 1988a). This r:lpid reduction in concentrations is in good agreement with the
results of the soil g:lS surveys.
The :lnalysis of bedrock ground water for possible
contamination is under investigation. A det:liled s:lmpling and :In:llysis program of existing
bedrock monitoring wells and background monitoring wells is currently being conducted.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
eg&I(\881 \i:1p-Iec2.j;u!
JANUARY 1990
PAGE 2-28
-------
2.1.6.2
Soil Contamination
Volatile organics data previously collected from the 881 Hillside Area have been
rejected during the data validation process. Although these data cannot be used to definitely.
determine the extent of volatile organics contamination in this area. the data is summarized
here because they likely provide some indication of the spatial distribution of organic
..
contamination in the soils and the relative magnitude of the contamination.
,.
Meth ylene chloride. acetone. and ph thalates were generally ubiquitous con taminan tS
in the samples collected from the 881 Hillside Area. There has been considerable debate as to
whether they are truly contaminants of the soils. Methylene chloride and acetone may be
laboratory contaminants because of the relatively high levels in many of the laboratory blanks.
It is believed that the phthalate contamination may have resulted from sample handling with
plastic gloves. however. no testing has been performed to verify this hypothesis.
Volatile chlorinated hydrocarbon contamination is apparently not extensive.
It
occurred above detection limits in soils from only 3 of the 23 boreholes.
The highest
concentrations detected were tetrachloroethene (PCE) at 190 micrograms per kilogram (J,lg/kg),
trichloroethene (TCE) at 150 ~g/kg. and 1.1.1. TCA at 110 J,lg/kg.
The actual maximum
concentration of these compounds is unknown because they occurred in composite samples.
::.1.6.3
S urf:1ce- Wa ter Con tami na tion
Surface waters of Woman Creek and the South Interceptor Ditch flow to Ponds C-I and
C-2. respectively. Discharge from the ponds to Woman Creek is monitored in accordance with
RFP's NPDES permit. Recently collected valid analytical data for the ponds indicates no
VOCs are present. and radionuclides. metals. and major ions are within the estimated
background levels identified in Section 6 of the 881 Hillside Area Draft Final Remedial
Investigation Report for High Priority Sites (Rockwell International. 1988a). VOCs are prescnt
in the 881 Building footing drain which flows to Pond C-2; how~ver VOCs are not found in
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
8c"'c\881 \iap-HC%.jan
JANUARY 1990
-------
Pond C-2. Elevated levels of uranium-238 occur in the South Interceptor Ditch upgradient of
the 881 Hillside Area. but concentrations decrease to background levels at Pond C-2. As part
of the final RFI/RI. additional data will be gathered to re-evaluate the presence of
contaminants in the surface water.
2.1.6.4 Sediment Con tamination
;
Due to the presence of acetone and methylene chloride in laboratory blanks run with
.
the sediment analyses. the presence of volatiles in the sediment samples cannot be confirmed.
Additional sampling and analysis wi!! be performed and evaluated as part of the final RFI/RI
report.
2.2
A:"IAL "TICAL DATA
Organic and inorganic contaminants exist in the ground water beneath the 881 Hillside
Ar::a.
Appendix I lists the results of volatile organic and inorganic analyses from alluvial
ground-water samples collected at the 881 Hillside Area from 1987 and 1988. Volatile organic
analysis for the first and second quarter 1989 are also included.
2.3
SITE CONDITIONS THAT JUSTIFY AN IRA
There is no immediate threat to the public health and environment posed by ground-
water contaminants at the 881 Hillside Area because the affected water is contained within
the plant boundary.
However. an unacceptable risk would be posed to the public by
consumption of the contaminated alluvial ground water at or immediately downgradient of
the 881 Hillside Area. Although consumption of this water is not likely. an 1M/IRA will be
implemented in order to prevent further contaminant migration from the 881 Hillside Area
that could otherwise exacerbate final cleanup efforts at the site.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
er.kr\881 \iap-HC2.jan
JANUARY 1990
PAGE 2-30
-------
SECTION 3.0
IDENTIFICA TION OF INTERIM REMEDIAL ACTION OBJECTIVES
3.1
DETERMINATION OF RE~EDIAL ACTION SCOPE
The overall objective of the 1M/IRA at the 881 Hillside Area is prevention of release
.
and migration of alluvial ground-water contaminants downgradient. and the cleanup of
.
alluvial ground-water contamination to within acceptable levels. The effort is to be performed
in the interest of protecting public health as well as the environment.
Specific objectives of the 1M/IRA are:
Contain. reduce. and/or eliminate site contaminants identified as posmg
potential threats to human health or the environment.
Reduce or eliminate exposure [0 site contaminants for potential receptors by
controlling potential contaminant pathways.
Demonstrate technical feasibility and environmental and cost effectiveness of
the interim remedial action.
3.2
INTERI~1 RE~fEDIAL ACTION SCHEDULE
A CTTVTTY
TIME FR A ME
I\1/IRA Phn
Draft 1M/IRA Plan
EPA/CDH Review
Proposed 1M/IRA Plan
1M/IRA Plan Public Review
Respond [0 Public Comments and Finalize Plan
I July 89 - 15 September 89
15 September - :: September 89
25 September 89 . 6 October 89
12 October 89 - 27 November 89
28 November 89 - 5 January 90
Design
Building Foundation & Slab (Phase 1)
Tanks
UV /Peroxide Treatment System
Ion Exchange System
Building and Tank Foundations (Phase II)
Subsurface Investigation
Collection System
I November 88 - 25 August 89
1 November 88 - 7 August 89
1 November 88 - 18 August 89
7 August 89 - 2 February 90
14 August 89 - 10 November 89
15 January 90. 10 May 90
14 May 90 -. 15 October 90
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
er.kg\881 \iap-MC3.jan
JANUARY 1990
-------
ACTIVITY
Procur~m~nt
Influent Storage Tanks
Uy /P:roxidc Syst~m
Effluent Storage Tanks
Ion Exchange Systcm
Construction
Building Foundation and Slab Construction Contracting
Building Foundation and Slab Construction
Building and Tank Foundations Construction Contracting
Building and Tank Foundations Construction
Tre:ltment System Construction Contracting
Treatment Systcm Construction
Ground-Watcr Collcction and Trcatment .
Drain Collcction Systcm Construction Contracting
Drain Collection Systcm Construction"
Drain Water Collcction and Tre:ltment (completc system)
TIME FR A ME
7 August 89 . 27 October 89
18 August 89 . 10 August 90
15 January 90 - 23 April 90 .
2 February 90 . 10 August 90
2 January 90 - 15 January 90
15 January 90 - 7 May 90
12 February 90 - 6 April 90
7 May 90 . 24 AuguSt 90
4 June 90 - 27 July 90
14 August 90 . 18 December 90
19 December 90 - 21 January 91
29 October 90 - 21 December 90
22 January 91 - 26 April 91
26 April 91
.
. Ground water will bc withdrawn from a well at SWMU 119.1 and treated as part of start-
up and testing.
"Ground water collectcd from trcnch dew:ltcring will be treated.
3.3
CO:\1PLI A 'iCE '\.'fTH~ PPLI CA B L E OR R ELEV A 'iT AND APPROPRIATE
REOLJfRE\1E'iTS
Response actions at Supert"und sit:s must meet two fundamental clean-up requiremcnts.
First. they must attain a level ot" cleanup which. at a minimum. ensures protection of human
health and the environment [CERCLA Scetion l:l(d)C~). 42 U.s.e. Section 962l(d)(2)]. Sccond.
it is EPA pOlicy th:lt CERCLA cleanups attain or exceed the requirements of all applicable or
n:levant and appropriate federal and state health and environmental requirementS (ARARs).
This section identifies and analyzes ARARs relevant to the 1M/IRA at the 881 Hillside Area.
administrative requirements apply.
This remedial action is considered an on-site 1M/IRA; therefore, only substantive and not
"Applicable stand:\rds" n1:1Y be defined as substantive environme~tal protection
requirements, criteri:l, or limit:ltions. promulgated under federal or state law, that specifically
addn:ss a hazardous substance. pollutant, contaminant, response action, location, or other
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLOR.ADO
eg.ki\881 \iap.s8c3.jan
JANUARY 1990
-------
circumstances at a Superfund site.
"Relevant and appropriate requirements" are those
substantive environmental protection requirements, promulgated under federal or state law,
that, while not jurisdictionally applicable to circumstances at the site, address problems
sufficiently simila.r to those encountered at the site that their use is well suited to the.
particular site. ARARs must be identified on a site-specific, case-by-case basis.
.
In general, there are three categories of potential ARARs at any Superfund site. These
.
c:1tegories are:
Ambient or chemical-specific requirements.
Locational requirements.
Performance, design, or other action-specific requirements.
Each category is discussed in more detail below.
3.3.1
Ambient or Chemical-SDecific Reauirements
Ambienr or chemical-specific requirements set health- or risk-based concentration
limits in various environmental media for specific hazardous substances or pollutants. These
requirements set protective clean-up levels for the chemicals of concern in the designated
media. or indicate a safe level of air emission or wastewater discharge.
Chemical-specific ARARs are derived primarily from federal and state health and
en vi ron men tal sta tu tes and regula tions.
Health Effects Assessments, Health Advisories.
Chemical Advisories. and Guidance Documents may also be considered when establishing
::le:an-up standards. but are not considered to be ARARs. These and any proposed standards
are classified as items to be considered. or TBCs.
Where background concen tra tions for
::onstituents are above the chemical-specific ARAR for that constituent, a variance from the:
ARAR is appropriate. A summary of chemical-specific ARARs for the contaminants found
at the 881 Hillside Area is presented in Table 3-1. When more than one chemical-specific
ARAR has been identified for a contaminant, a screening process is used to determine the
pecific ARAR to be applied. This screening process involves three steps as outlined below:
INTERIM RE.\i:EDlAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, COLDEN, COLORADO
-C&c\881 \iap-MCoS.jan
-
JANUARY 1990
-------
~ ;02
II:'O~
011 0 t'1
-x~
:0<
:::..,
ii' ~~
'i' ~!C
~ In t'1
C4'Ot;I
~'E~
!i>
~~
°0
Gz
~'O
oE
o
f'O'"
00
~;u
oa
g:
..
IAUllj1.1
(III "IUt. Sf'1 (If I( AIlAlls
/1111 n."'U'NUS ANO HUIINIS OUtlllU
AI IIiE 681 IIlllSIOl AIlEA
Hallin.n In
881 Hill side
Area Alluvial
Ground ~ater'
AIIAII
(uilII )
Standard
Criteria
or
Guidilnce
Chemical
Ccament
Organic Coopounds
Acetone
19 50
21,00J 5
180J 5U
llJ 5
1YUOJ 1
1111 5U
5900J 5U
RellA lOR is releyant
and illl1ropriate (RU)
Carbon letrachloride
COH Surface ~ilteri Drinking
Uater Standard 15 applicable
1,10ichloroethane
RellA Subpart f, Appendix IX
Subs taliC e i5 1 BC
1,2 Oichloroethane
eOH Surface Uateri Drinkinll
Uater Standard i5 applicable
~
8
tIJ
~
1,1 Di,hlolocthene
eOH Surf il,e Uater i Drink ing
Uater Standard 15 applicable
Hethylene Chloride
R(IIA Subpart f i5 RIA
letra,hloroethene
COH Surface Uateri fish and
Uater Ingestion Standard
Is applicable
lOluene SJ 2000
1,1,1 Iri,hloroethane 15,000 200
1,1,2Iri,hloroethane I,1J 5U
SOUA H(IG is RIA
COH Surfa,e Uateri Drinking
Uater Standard II applicable
COH Surfa,e Uateri fish and
Uater Ingestion Standard is
appli,able
&.. 1 ri,hloroethene 11 . 000 5
~
~~ Carbon Disulfide 1J 5u
~o<
t'1...
&.010
18
COH Surfa,e Uateri Drinking
Uater Standard II applicable
(OH Surface Yateri Drinking
Uater Standard is applicable
-
ARAR h not exceeded
ARAR is ellceeded
IBC Is CIIceeded
AllAR is ellceeded
ARAR is exceeded
ARAR I. exceeded
ARAR Is exceeded
ARAR II not exceeded
ARAR Is not exceeded
ARAR i. exceeded
ARAR Is exceeded'
AllAR is not ellceeded
-------
I Alii t j.1 2. , .
CIitHtUIIi 1111 ARARs
I U6I UH'UJH()S fHENIS 011(1:110
~ ;U2 AI IIiE M lSIDE AIIEA
r;-0t;j
,,0
=~2
~"'J
i'~~ "8)( inull In Standard
'>i 881 Hilisidc Criteria
!~tj Area Alluviat ARAR or
S'~~ Chemical Growd ~aler (1119/1) Guidance COinnenl
.>i> (019/1)
()~
00 t!ili!!
{;~
~'U A IUlii OlD 0.26 5.0 (011 Agriculture Slaoodrd ARAR Iii not exceeded
o~ is appll ubi e
0
ro"'J Ani imony 0.0198 0.06U R(RA Subparl f is RIA AllAR i Ii exceeded
00
E;U Arsenic 0.010 0.05 (011 Surface ~ater; Drinking ARAR is not exceeded
oS ~ater Staldard Iii applicable
00
08
... Pariuo O.JIIO 1.0 (011 Surface U...tcri Drinking ARAR ili not ellceedcd
~ Uatcr Stooo...rd is bppllcoblc
8 Pc/yll iuo O.OOiJ 0.1 (011 Ayricul tUril1 Stall,I.....d is ARAR is not ellceeded
tIJ applicable
~ Cadniun 0.0011 0.01 (OH Surface Uater; Drinking ARAR is not ellceeded
Uatcr Standard is applicable
Calciun ]55.99 NS No Standard
Ces hn O.OI,J NS No Standard Badgrourd 1& IBC
(hromiun III 0.0782 .05 (DH Surface Uateri Drinking A 1\11 I yt lul result 15 total
Uater Standard 1& applicable chromiln. ARAR l18ybe
uceeded
(hromiull VI 0.0782 .05 (011 Surface Uatcr; Drinking Alia I yt ical resul t Is total
Uater Standard 15 aPJ}licable chromiun. ARAR..y be
ellceeded
~ COPJ>er 0.9515 0.2 COli Agr icul ture Stand...,d is ARAR is ellceeded
"G~ applicable
>t
()o<
l":I...
~IQ
-------
~ ~~ IA81E J-1.2 (COIIt.)
"0 (IIt"IUI SPtCIf IC AIIAlis
~n IU'I U»U>U'NOS AN{) EllKfNIS DEltCILO
~~~ AI IIiE 681 IIIIlSIDE AREA
~..,
~.~~
:.~
~"d
~.~~ "ollln"l1 In Siandard
681 Hit hide Crileria
. > Area Alluvial AllAR or
gH Chemical Ground \Jalerb (1119/1) Guidance Coon~nt
r;~ (11'9/1)
~"d
oE Helals (conl~
0
~.... 0.I,06S (011 Sur face \Joler; Or ink illY Analytical result. are
00 Iron O.J
E~ \Jater Standard Is applicable ,oluble Iron; ,oluble
oa Iron exceeds ARAR
s: lead 0.021, O.OS (011 Sudace ~oIler; Drillk ing AllAR is not exceeded
... \Jater Standard Is applicable not exceeded
~
li th iUD 0.1 2.S COli Ground ~ater Standolrd is ARAR is not exceeded
en
8 applluble
t'J
e HagnesiuD 9S.S07 liS 110 Standard
Manganese 0.9S86 O.OS COli Surface ~ater; Drinking Analytical resultl are
~ater Standolrd is applicable soluble ..nsanest; ARAR
is exceeded
Hercury 0.9 0.002 COli Surface ~ateri Drinking ARAR is ellceeded
~ater Standard II applicable
Ho I ybdelll'" O.OHS 0.1 COli Agriculture Standard is ARAR Is not exceeded
applicable
Nidel 1.1827 0.2 (011 Agricul ture Standard is AllAR is exceeded
applicable
Pouss iUD 12.J NS No Stal1dilrd
~
"d~ Seleniu" ].2 0.01 COli Surface \Jater; Drinking AllAR is exceeded
>t \Jater Siandard Is applicable
C)o<
t'J...
woo
:"8
.
-------
-=;02
t-0t;l
l1li0
--~~
g:o<
~..,
'~~
1-0
S~~ Max inun In
881 Hitlside
. > Area Alluviat
g~ Chemical Grou-Id ~ater
(;~ (mg/I)
~-o
~e Metals (cont.)
0
r.. Sit ver 0.0091,
00
E~
oS Sodilu ]1, 1.11,
8:
.. Stront iUli 2.9066
~
'hall hm 0.01
8 VanadiUII 0.0368
t':J
E linc 2.1,~~9
IABI E -.2 (coot.)
CII£HIOI. SPECifiC ARARs
tOIl U.ltPUJNOS ANO UEHfltlS OEIECIEO
AI 11110 &11 HILLSIDE ANU
,
..
ARAR
(lng/I)
Standard
Criteria
or
Guidance
Comrlent
O.O~
CDH Sur'ace ~ater; Drinking
~ater St.ndard Is applicable
NS
No Standard
NS
No Standard
O.OIU
RCNA Subpart f is RU
0.1
CDH Agriculture Standard Is
applicable.
2.0
COH Agriculture Standard is
applicable
-o~
>~
no<
M...
~IO
~8
ARAR Is not exceeded
Background i. 'IC
ARAR is exceeded
ARAR is not exceeded
-------
. ~~
"0
~o
:::!C!
~~~
ii'~~
t ~t'J
r.'1JU
s'E~
~>
gg
[;~
~'1J
~E
o
t''oj
00
E~
oS
IAIlIE ]- L]
(IILHIUL !iPL(1f IC AllAlis
11111 (lK'(JJljOS All) (UHUnS 0(1((1(0
AI 1111: 681 IIILlSIOl ANEA
Chemical
Hax IIIJ..n In
881 Hillside
Area Alluvh~
Ground ~ater
(DI~
()o<
t'J...
WID
d.8
.
-------
\
"
~ ;02
t-°oi
.. 0 t'J
=~~
~"':I
-~I
ioi
!~
I.S~ Hu i nun In Standard
. > 881 IIi' Is ide Criteria
2~ Area Alluvial AMAR or
(;~ (hemical Ground Yaterb (pel/I) GUidance (OOIllent
~'U (pCi/t)
~E
0 Rodionud ides
r"':l
00
E~ Gross Alpha ]19 IS COli GrOtui Y.Her Standard i5 ARAR la eKceeded
oa Ii awl i cabl e
00 Gross Bet II 266 Sod SOYA H(L is applicable ARAR Is eKceeded
01
...
E pi38,239,2l.0 cO.lc IS (011 Sur'ace Yater Standard is ARAR Is not eKceeded
applicable
8 A 21,1 cO. IC
t'1 In I, (011 Sur'ace Yater Standard is ARAR is not eKceeded
e applicable
II] 111 20,000 COli Sur face Yater Stand.ud is ARAR is not exceeded
applicable
Sr69,90 S.6 6 (011 Sur'ace Yater Standard is ARAR is not exceeded
app.llcable
Uraniuntotal 58.9 1,0 (011 Sur'ace Yater Standard Is ARAR Is eKceeded
applicable
IABI E ]- 1.4
(IUNICAl SPlCIf IC ARAIis
11M ((H>(INIS AND EUM£lnS DElE(I[D
AI IHE 681 HILLSIDE AREA
:~
no(
t'1...
WI()
~8
(a)
(b)
U
J
B
ID(
(c)
(d)
HaKiml~ compound concentrations determined 'r~ 'Irst and second ~Iarter 1989 data.
Huinua coofX>und concentrat ions determined 'r~ 1981 and 1988 database.
Detect ion I illii t
Est lmated below detec t iOIl I imi t
(0IJt>0Uf'd also present in blank
10 be considered
Delow milli~ detectahle activity (HDA)
Actual Sta,ldard is" millirem per year. SO J>cill is the crite. iUII where it is necessary
sped'ic man-made hela (.ulittin9 isotopcs to detelmine (;onpliilll(C with sta,lda,-d.
-------
1.
The most stringent human health or agricultural-based promulgated standard
among the Safe Drinking Water Act (SDW A), Maximum Contaminant Level
(MCL), and CDH ground and surface water standards is first applied
(applicable).
2.
For a RCRA Appendix VIII hazardous constituent, in the absence of any
promulgated standard in step I above, the most stringent RCRA Land Disposal'
Restriction or RCRA Subpart F limit is applied (relevant and appropriate).
In the absence of an ARAR in steps I or 2 above, the most stringent of the Clean
Water Act Water Quality Criteria, or the proposed CDH ground water and
surface water standards is applied (TBC).
..
3.
Screening for these ARARs is presented in Table 3-2. The screening process includes
..
consideration of both ground water and surface water standards because in the proposed
1M/IRA (see Section 6.0), treated ground water is discharged to the South Interceptor Ditch
(SID). The surface water in the SID often infiltrates the alluvium and recharges the alluvial
ground water. Of the elements/compounds detected in alluvial ground water at the 881
Hillside Area, there arc no ARARs for calcium, magnesium. potassium, sodium, bicarbonate.
cesium. and strontium. However, the total dissolved solids ARAR establishes the acceptable
aggreg:lte concentr:uion for the above major ions (excludes cesium and strontium). Until an
acceptable risk based concentration is c.stablished for cesium and strontium, their background
concentrations are TBe.
3.3.1.1 Safe Drinking Water Act Maximum Contaminant Levels (MCLs) and MCL Goals
Because ground water beneath the 881 Hillside Area is a potential source of drinking
w:1ter, Maximum Contaminant Levels (MCLs) are applicable for all phases of the 1M/IRA.
:vtCLs are derived from the Safe Drinking Water Act (PL 93-523).
They represen t r he
maXImum permissible level of a contaminant in water which is delivered to the free-flowing
outlet of the ultimate user of a pUblic water system [40 CFR 141.2(C)]. Maximum Contaminant
Level Goals (MCLGs) have also been considered in developing clean-up standards. Section
121 (d) of CERCLA as amended by SARA suggests that MCLGs may be appropriate under
certain circumstances of the release or threatened release of hazardous substances.
This is
reinforced in EPA's document entitled, Draft CERCLA Comoliance with Other Laws Manual.
INTERIM RE.'wfEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
er.kr\881 \iap-..c:-'.jan
JANUARY 1990
-------
I Mill j 2. 1
Stili I NIN~ lit CUI Sl'lClllC A~Alls
1'1 III INI.NI Ii) 681 1\lIl AIIEA IH/lIlA OI'IIII"S
4
,
RCAA COH Ground SOIJA HiIK in..n f or Use In RCRA CUA Ad.. ellt Uat er Qual it V COH Surface
Subpart f \.later Qllo.I~ilV Cont .Imi nant Special land Oisposo.Il Crileria '01 Prot~clion 0' ~ater QUII II V
Concent'"allon S t and.lr ds level (HCl)c C i rClmst aaces Restr ip ions ----- ~9!"!!!!L.!.H!_- Standan.lse ARAR
Cb_lul lillitB (ug/I) (ugll) (ug/I) SOUA/HCUi (ug/I) freshwater Acute/Chi onic (ugll) (ugll ) COIilDent
(uyll ) (II!!/I )
Ontnlc C OII{>OIJnds
Acetone loJA 50 50 RCRA lOR Is
relevant Ind
approprilte
(RIA)
C.rbon letrachloride 5u 5 5 0 50 j5,OOO/ 5 S COH Sur face
\.IIIIter Orl......
~ter StniJrd
is IIIfPI inble
1,1 Dlchloroethane 5Um 5U RCRA SulJf>ar t
f ncl
I,Z Dichloroethane ~Um 5 ~ 0 '10, uuul2o,ooug 5 5 COli Surface
\.IIIIter Orl..l...
\later StilRWd
is ..pi icwi.
1,1 Olchloroelhene 5u 1 1 1 11,0009, 1 1 COli Surface
~[er; Ori..i...
\later St..-dMd
is ewl icabl.
N.thvlene Chloride 5u 200 5U RCRA SuiJf>art
f II RIA
letrlchloroethene 5U 0.6 09 19 ~,2UO/6409 0.8 5U COH Slir face
\.liter; flih
and \.later
Ingestion
SunJarJ (0.8
ugJl) II 8Ol,
so detection
... lillli tatS tD'1
~~ Is OIIpllC.Jble
t~
taJ-<
......
,ID
-------
IAUII: J 2.1 (com.)
SUIlINING Of C!ltHICAI SPlCltlC ARAlis
1'11111111 III II) wn 11111 Slill AlilA IH/lIiA ..'110..5
RCRA CDH Grolnd SOUA Hall inun for Use In RCRA CUA Anbient Uater Qual ity CO" Surfllce
SLlJpari f Ullter Qua~ity Contullinant Special Illod Disposal Crlterill for Protection of "ater QUlliity
Concentr.t ion Staodards level (HCI)c C i rcuns iliac es Restrlp ions Aquatic tlfe Staodardse ARAR
Che8lcal lilllit8 (ug/I) (ug/l ) (ug/I ) SOUA/HCIG ( ug/l) freshwater Acute/Chronic (ug/l ) (ug/l ) Conment
(ug/l) (ug/I)
Organic ConpoindS (cont.)
Toluene SU 11,,]00 2,000 1,120 11,OOOg/ 2,420 2000 SOUA HC" II
llA
1,1,1 Trichloroethane Sum 200 200 200 1,050 200 200 COH Surface
'-'rtl!f"i Orirtlrg
~ter St..-dlrd
I. IIfPllcable
1,1,2 lrichloroethane su 0.6 0.6 SU CDH Surface
Ullter; fl.h
.od Uater
Ingestion
S t an..IIIrd (0.6
09/1) is BOl,
50 detection
IWrit of 5 !WI
Is ~I icable
Irlchloroethene Su 5 S 0 62 1,5,000/21,OOOg S S CDH Sur face
~te.-; Orirtirg
~tel" StardJrd
is erpllcable
Carbon Disulfide 5U SU RCRA Subpart
f Is RIA
U
(8) -
(b) -
(c) -
(d) -
(e) -
(9) -
(h) -
(i) -
( j ) .
(k) .
(UI) -
Delect ion I imi t
1,0 CfR Part 2610.92 Subpart f releases from solid waste management units. (1,0 Cfli 261, Appendill VIII, list of Hazardous Constituents)
S CCR 1002-8, Section ].11.5, 8asic Standards for Ground Uater August 11, 1989.
1,0 UR Pari 1101.61 Nalional Primary Drinking Uater Stand.lrds.
1,0 UR Part 11,1.50 National Prima.y Drinking Uater Standards.
S CCR 1002'8, Section 1.8.29, lelJ~>orary Rule Adopted July II, 1989.
lowest observed elleci level.
Proposed value federal Register 1,6956 (Nov. B. 198'».
10 be considered. Ihe must recenl IPA Guid.lnce on Ihe iLJ.:nti.ic.ltlon o' ARARs slates thai elllslln!.! flileria, allvisories, guidance, or.proposed standards should be
consillercd lor a chl'mical in the absence 01 a proll".I!.!alcd slalld.ud.
Proposed value Oct. 1986.
1,0 CfR PMt 266.1,1 Suhpar! 0 - Ilealllu:nt 5tand.Hds.
RCIIA 1,11 CfR 261" Appcndill II( GrolMId 1I.ller Honilo.-i"!J t.151 Substance Not Included in 1,0 CfR 261, Appendill VIII, list 01 Haludous Constituents
"
-------
IAUI t. ) l..l.
~.INII NING UI CIII HI . I 51'1 CII IC ANAN:.
I'II/IININI to 1181 11111 REA IH/l1IA UI'IIIINS
,
~
RCRA (011 Ground SOLlA Hax i n,," fur Use III CLIA A"bient LIaler QU.lllly COli Surf ace
Subpar t f Uater SlolI
-------
IIIUll i l.l «.,",,,)
~UUININ(. Of CIilHICIII SPICUIC IIIIAlls
I'IIIIININI \II 6111 IIIIISIO[ AlllA I"/IIIA I.'IIIIHS
RCRA COli GrOlu>
-------
1111111 i .'..'- 'l,w''-I
~nlll NINI. 1)1 UII tue O'I't t:lIl( AIlAlls
I'IIIIININI II) 68111111:;1 ." 1"1111" ..'IIIIH:>
~
RCRA COH Grouod SOUA "all i nlln for Use In CU" "nbient Udter QU.Jlily COH Surface
Subpar t f \Jat er S I 01\0.1.11 d Contdminant Spec iill Crileria for Protection of \Jater Qual i I V
Concentrat ion Hunan Heall~1 1 eve I (HCl) c C i rclms I aoces -~~!!!f.-! i !!_----- - S t a,ld..rd
CheMlnl lilAi t8 (1119/1) Ayricul ture (n.ylt I SIHJA/HClG freshwater Acute/Chronic Drinking U..ter/ AUR
(mlc
IIC.
IDl.
Ce) .
Cb) .
Cc) -
Cd) .
C f) .
(IJ) .
(h) -
CJ) -
~~
t~
t'Jo(
toO...
. '"
~8
10 be considered
Below Detect ion 1 imi t
'0 UR Part 261,.92 Suhpart f Releases hom solid waste 111.I1I.J!.ICUlent units
5 CCR 1002-8, Section 3.11.5, Ground Uater QualilV Sla.lddrds
'0 UR Part 11,1.11 Nallonal Primary Drinking \Jater .Sta,ldards
S CCR 1002-8, Section 3.8.29, lellfJorary Rule adopted July II, 1'1189 (lotal Recoverable Concentrilllon~)
P,oposed value 8S o. October 1986
lowest Observed Effect level
Itardness dependent c r II cr i a (IOn II.J/I)
-------
IAUII i l-S
~t:1I11 NING 11/ CIII HICAI SI'I CIIII: AI/All:;
I'IIIIINI N' It) 631 11111 S/lJl AlilA IH/IIIA I.'IIUHS
ChetDlcal
RCRA
Slbpart f
Concentral ion
LimitB (1I19/t)
CDH GrOluld
~ater Slil/ld.J' d
Huron Heallt'
Agr icul tur e
(ml,, III'-"yin 01 s,"dy III ,.1111<4 ,"'- WIl'SI/,,1 sili/aliulls SI/.II .1'. "'I"'II,,'ly hlyh walel' In!)eslion or nllllie 'orlll.ll.un in slun ies, Ihe
NUS-N 1'11/5 HO,(N conlenl in "nIlLII',! w,11el5 '''I 'illcslo,~ ,11,.1 1'0'"II Y shOl.ld be limiled 10 \1101""1111' I,,:;s, and the N02-N cunlent alone tJC linllied to 10 ''IXII or less.
A C..II~.I'''''' '"Iill 0' Hil..le ,11>11111.,,1<: .'1 Ih... ,,,Jilll O. ",1..1... 10 Ih" d,.",'SIIC wale,- ~.1/11,ly "h..11 .".. e.,,'ed 1001'1/1.
I 9 /I Oh
10
lOi /lOOh
250
2501
250'
2501
500'
,
-------
~
IAIlIE J-2.~
SUUlNING 01 CIII"ICAI Sj'lClflC AllAh
I>IIIIININI 10 631 HIlISIOE AREA I"/IRA "'liONS
RCRA COli Ground SOIJA "all in..n for Use In CIJA Anbient \Jolter Quality COH Sur lace
Subpar t f \Jater Qlhll i Iy COlltolminant Sped al Criteria for Protection 01 \Jater Quality
Concentration Standdrdsb level ("CI)c circunsta3ces Aqua!.!£! i Ie Standdrdse ARAR
Che.lcal I imi t8 (pC ill) (pCiJl) (pCi/l) SOIJA/Het G freshwater Acute/ChrOlllc (pCl/l) (pCIJI) Conment
CJ,c i II) (pCiJl)
Red I ooud I de s
'Gross Alpha 15 15 15 COH Ground \Jater
Standard Is
appl icable
GroSi Beta " mrem/yr e 50 50 SOIJA HCI is appl icable
pu238.219.2100 15 100' 15 15 COH Surface IJater
Standard Is
applicable
Aii"l ,,' 10 " COli Surface \Jater
Standard is
applicable
II) 20,000 20,000 20.000 20,000 COli Surface \Jater
Standard is
applicable
Sr90 6 6 8 8 COli Surface \Jater
Standard Is
appl icable
Uraniuo total 100 COli Surface
"0 \Jater
Standard is
applicable
(a) .
(b) .
(c) .
(e) .
5 CCR 11102-6. Sect iOIl .I.II,5(D). D..sic St,lfKI..rds Applll"ble to Ground IJate. s 01 the Stale
"0 CfR Parts I" 1.15, 16, Nat iOllal PrimMY Ori"k i"g \J.,ler St.lOd.lrds
5 CCR 1002-8. Sect iUII 1.6.29, 'ell~)or ary R"le Adupt,'.1 J"I y II, 19U9.
for twta alld photon t'mi Iters, it two or more ra,lioll"" Idc:. ,Ir,' prese"l. the sun 01 their iJlI'"'''' d."..' "'I'IIV,II"lIt to the total body or to any organ shall not ellceed
I. mrcm pcr yea... I,c'~pt lor 'I"It.lllll "lid SI'OIiIIUIl '/11 Ih., (uIlCI'"lriJtilln 0' mall-m"dc 1..diorll,dHIo':, "'~" mrem tolal body or olgan dose equivalents shall be
c.llcul..led Oil Ih.. hils IS 01 a 2 IlIcf pel' d.IY <1'1"1'"'1 ".'1." lI"illc usill~ Ihe 168;hllur d,lli. I isl,'" III "Ha.ill...n Permissible Body Burden and Hallinam Pcrmisslble
(00(1'111. ill 1011 .., 11.,,110"111 I Ides III A..- .)1' y"I," '0' II., "1."11011.,1 l'p"~'11 c," /jUS lI,lfKIl..,ul t.9, .h ,""'~II",',I, Au~..,.t 19t,1. liS Deparlment 01 Conlncr!:c.
1',"1''''''''. ...1"., ill ," I"I,,"~ ...,1." )'1"'''111'1'' 11:,l "1"..1 (.) 111..1 "om iJ du:.c 1..1.: 01 l, nUl,tIIly.'''''. ~I'pl"n~"''' .10, 1986 (~I IR 310659).
-------
Volume II. Maximum Contaminant Level Goals. (EPA, June 1987, that identifies the special
circumstances where MCLGs should be considered as ARAR. These circumstances generally
occur when there arc multiple contaminants in ground water, or where multiple pathways of
exposure present extraordinary risks. According to the guidance document. the use of MCLGs'
should be determined on a site-specific basis in consultation with EP A headquarters.
~
The clean-up criteria for the interim remedial action at the 881 Hillside Area consider
~CLs and MCLGs as ARAR wherever such standards have been promulgated for the
..
con taminants of concern. Proposed MCLs and MCLGs are considered TBCs in this anal ysis.
3.3.1.:
Ambient Water Quality Criteria
The Ambient Water Quality Criteria arc nonenforceable guidance developed undc:r
the Clean Water Act. Guidance is set for surface waters for the protection of aquatic life
and for the protection of human health. based on both drinking water and consuming aquatic
organisms from that water. Sine: the 1M/IRA proposed here involves the treatment and
subsequent discharge to surface water, the Water Quality Criteria are TBC.
3.3.1.3
Colorado Surface Jnd Ground~Water Quality Standards
The Colorado Department of Health (CDH) has adopted interim ground- water Quality
stJndards for many organic compounds. These are considered applicable for the constituents
where they exist. Some of the standards are lower than the current standard detection limits
(or rhe compounds of concern. When this occurs, the detection limit will be considered :IS
ARAR.
The CDH has also promulgated ground-water Quality standards for many inorganic
compounds for both human health and agricultural uses. These standards '3re considc:red
applicable since future or downgradient use of the aquifer is not restricted. Where standards
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
el&£I\881 \iap-..c.S.jan
JANUARY 1990
-------
exist for both human health and agricultural uses, the more stringent standard is considered
to be the ARAR.
On July II, 1989, the CDH adopted temporary surface-water Quality standards for.
Walnut Creek and Woman Creek. These include standards for many organic, inorganic and
radionuclide parameters. These temporary standards are in effect until March 30, 1990 (unless
permanent standards are adopted at an earlier date) and are considered applicable.
3.3.1.4
RCRA Ground-Water Protection Standards
Owners or operators of facilities that treat, store, or dispose of hazardous waste must
ensure that hazardous constituents' identified in 6 CCR 1007-3 and 40 CFR 261, Appendix
VIII, entering the ground water from a regulated unit do not exceed concentration limits under
6 CCR 1007-3 and 40 CFR 264.94. The concentration limits include standards for fourteen
compounds,. with background used as the standard for the other RCRA Appendix VIII
.:onstituents. These concentration limits apply to RCRA-regulated units subject to permitting
(landfills, surface impoundments, waste piles. and land treatment units) that received RCRA
hazardous waste after July 26, 1982. Although this area docs not contain RCRA-regulatcd
units, it docs contain Solid Waste Management Units. Therefore, the RCRA clean-up criteri:J
Cor Appendix VIII constituents are relevant and appropriate and are used to define ARARs
in the absence of any human-health based standards. Background concentrations for 40 CFR
:64, Appendix IX constituents not listed in Appendix VIII arc TBC.
RCRA land disposal n:strictions (LDRs) for certain organIc contaminants (40 CFR
268.40) arc considered relevant and appropriate for the discharge of treated ground water to
either surface water or ground Water. The LDRs arc technology based standards and :uc
considered relevant and appropriate in the absence of a health based standard.
INTERIM R.E.'dEDIAL AC'I'ION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ec-"c\881 \iap-MC3.jan
JANUARY 1990
-------
3.3.2
Locational Reauirements
Locational requirements are statutes or regulations which set restrictions on activities
or limits on contaminant levels, depending on the characteristics of a site or its immediate.
environs. Examples of locational requirements are federal and state siting laws for hazardous
waste facilities, or sites on the National Register of Historic Places. Also included are the
Wilderness Protection Act and floodplain regulations promulgated pursuant to the Federal
Emergency Management Agency's National Flood Insurance Program.
"
Location-specific ARARs that arc relevant and appropriate are the State of Colorado
siting criteria for RCRA treatment units. and for surface-water discharges, the CDH W:u:r
Quality Division's regulations pertaining to pre-approval of treatment facility location.
3.3.3
Perform:1nce. Desi2n. or Other Action-Scecific Reauirements
Performance. design, or other action-specific requirements set controls or restrictions
on particular kinds of activities related to management of hazardous substances or pollutants.
These requirements arc not triggered by the specific chemicals present at a site. but rather by
the particular 1M/IRA alternatives that arc evaluated as part of this plan. Action-specific
ARARs are technology-based performance standards, such as the Best Available Technology
standard of the Federal Water Pollution Control Act.
Other examples include RCRA
treatment. storage, and disposal standards. Clean Water Act pretreatment standards for
discharges to publicly-owned treatment works (POTWs) and the Colorado Hazardous Waste
Regulations.
Action specific ARARs for the interim remedial actions evaluated here :u:
included in Table 3-3.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
81&1\881 \iap-MC3.jan
JANUARY 1990
-------
~ti(n
..-.blmt
~Iru
~~
gS
(.I-
.IQ
~8
RUlliIlJ,..!!. -----------
111"1 st,nl.n!> 101' ~ull sollllJl1
WlSlc'S ad diwdn'ca,lailli'1iJ w.lSll-.
are lu;aj UI CIle 01 lu.-
hdwulO'Jies 01' cUlhi,ul ilW L; I.....'
WlSle ~Icrs, (I) slc.1n 5Id",i'\J,
(2) bIOlogical tr..alnull, or 0)
C.:IoI...1 ~>&OIpl iCIl 1.:Ilule or III
cmhi,utial wilh (I) 01' (2)1; ...1 I..'
all olher w...slei, in- i'L..-al JCII. '" 0(
Icchvlogy ml)' IJC ...oj. 1........'-'\:., i,
It wi II achi~ Ihe cu. ullral iu,
lewls ~iliaJ.
PIOCUlUlt 01 . C.:I 0'
c..,tilllirutil.n will mj.e ,ut,i'UIUltS .,pI ic-
iUe. '4pi'\j wit/lUll ~.ah OlMJllfit will rot
~e fcq,iro'D,ls in,IIC.UC, UJt tl,kIical
rat,irollnls ill e I.~cly to lc ,de""lt ,uj
.nH,.'ialc.
, - --- f!!:.!!!.!.!l
HU!A St...: ",".
lU)I, (d)(1), (eHS)
1,2 U,S,L
6921,(d)(}), ee)( S)
I,() UK lU.,Z)8(L)
I,() CIK lU..3\O(a)
- -- -- A/!AA -----
Aft,llc.He
w
U.IIIUIIS
ttMJlmt 0' CII(dvdle'lf 5011 ultiite or tr"41,,"
tation 0' soil o"sitc 'or disposal nU6t be
Ircdl~ to attain 1~ls iJLhiev..ble b( b:51
dnU'6t.atLd availible t.eat.l1ml tatnJlogies
be 101 e leirg lilllj'dl~.plSu.f.
CoflJirg 0' _te in ptace u;iro IICRA tech\ical
-------
~imn-
ClfpirQ
(cml inoJ)
....
tl
t"J-<
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~8
IAIilI } i (t ,..11111"1
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1111 WlttDIAl AU II14S AI lIit I~II 11111 swe ARIA
Jj"'lilltlllll
- t~!~J!..!~!~~
- L!H!.!~!!.
AllAR
- -- --.-
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c.w1re
(C'Irt IruxJ)
CI.... CIe.G' e
(IIIIIIMII)
~~
gS
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010
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lIo}.irulint
Iflitattat im of final [(M.'f" to
pwi~ laQ" tel 111 minimilatim
of inf i I trat im.
ru. t " cI 0<.01 e C "I" 1...1 !inH'1
wter aUlitOi \lQ.
Wlerat p...-fol1lulCe ,t....tut.!
fUJ,ires lAinlmizat 100 of ...'6.1
fOf" hctllCf" lIIIintenn-e ..d
,ullrol i lAinimizat ial 01-
elimirntim of p:liSt'd U 110)
t\I)' .."Iy 10 St. '...c iOlulIllUlli cuitiluilUluJ
wil, irdLdll'O soil "UlI d.utJilQ 01" soil
dl s tll t:.o.d in III<: co.'!.C 01 lk i 1111\1 01
eACav"tiOI,IIlJ ...:hnu.l to I.IIJ.
_fih!!.1£!.! ---,
4.0 (I II 2.61..} 10
4.0 WI aY..} 10
4.0 Clil aY..1I1
I,() (III 2.61.. 1 \I
I,() Cfll aY..Z28(a)( I)
.-d
4.0 (fI1 2.61..l>8
1,0 Oil 2l,l,.111
AAAA
R&A
CamUlts
Awl iC4ble 10 soil eJ\C4VoIled 'Of" offsite
-------
~i(l'_-
~tiall
CaliOllilll illI
Gnant-~Ier
01 \llef'5lm
',-.bIU1t or
Storage III
Ilib
t
...,c:
tt
(11-<
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I U>
.> U>
.0
-_--__~!h_~-!L__--- - - -
A..~ 'I un lI,il1l PIIll"l"ials iIIC
v.cavated III( ru,Jire de-up
10 Il'\/Cis esl.U I:J,,,' I'r'
cltr_;" c "f'Jinlll1'b
(11..01 ilill h.. III :.I.~ ,"-.,
pi 11.'S/storacjC I;. ~s will
tri9'JCr SIOI-...jC I H' ,i""IJ'(S-
PliJCUIUl1 m 01- ill lad ustsiw
tl\i I banby or !)lea 01
CU)1.minJtimwili Ifl9'JCr I;..,
di~.por;al reqllfUll:JlIS iIId
reslricl iU'ti.
Excavdl ial 0' soi I 'or
culilru:ticn 0' shny Woill puy
'rin..- clEUlp or l;oj disp.~1
reslricl iU'ti.
1 a ts IIUi t hiM! suf Ii ci Inl she II
stns'tjlh (thldness), ad, for
cla;aJ t..-.s, p-ess..-c Callrol s, 10
assu--e lhal thl.'Y d> Int coli ~-6e or
nph.-e.
LUite mtil rol li! i..:u1Iulib.c wilh
Ihe t;d: uulerial 1111"';5 Ihe I." is
p-oICClo.' by a I i'L'I- or bv olhcl-
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-- - - !l~!.!~J~!~!!~
t\MJ'Ult 0' ".ll.iHiI., ~u.lc(llstld or
dl.)riJCtel iSlic) 'run lie \Jlil or 81ea 01
("."lilllio..lifU i.,tu ,1..JI'u'r. ('JI.~II.d.
liu\ within a l,all LH .ue" u' tll,I.IIU"
nit 1111 d,,-", Ilil I'I~_.-'- .",li,.JuIUy:
RtRA hazanhti ~ble pl.a:uj at site
after 1b.u1lu- 19, 1\6), or II1MJfalt
hazalluli _Ie ',un ae ulit, iIIet.I
0' CUII iJDlrul ia '. or h.c..1 icn 1010
IIfJ)Iht."I" lI'Ii t 0(' al ro 0' cml.."ir~1 ien
ROIA hazani.ati ~ Ie (I is led or
dlaracterislic), held '0(' tOllDlIW)'
p..'dod lc'ore l,wlJlI-JII, di~u;al, or
slorle 'or RUIA halan1u w:iSle; W it
ro' KOlA haurd:u> _h:.
See EJli:avaI ia IICmioI iilll i m
Rele'llil"\t UJd lf1:np"iate 'or 'reabrBlt UJd
5 torage ,.-ts Uied In tT'e8t Ire antlllliret ed
-------
~tlm
'reebN:nt U"
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,...
(CUitinuJ)
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prwld.d with secad.ry cU)lainlU'1.
I...:; auale r..Nil.)' wilh (Ulllub
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Associalitn, 1'176 or lo;(Jl).
------
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free lose, lid po ol...CI flUll U.llloct
wi th IICCUII,I..ltd I i',li". PI WId!
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of free tiqJicii. ROIIM: spillt.d 01'
Ie..uj IoOSte in a t indy nuu..... 10
pre'YUl1 o..u-fl..... of lhe culI..illluII
syston.
K"'11 CUllaillcrs of i!Jlil~le 01'
rrocl iw luste at lea:;t 50 fl.'(:l hun
lhe facit ity's pnpcrly I inc.
KI.'tV i,cOIpl1 ible 11..1<:. iab
5qDlate. ~Iale inHI'1DliLle
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8 dike or olher tallT",r.
lA/ill J j (lUlllllull
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Colt. Iller
Storll!)e
(Q)-Site)
(emt inoJ)
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, rcablmt
Storaye or
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R''I.i I IIIIJ!!--
At ellUl-e, rUIIM: all tkllill\1u;
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will wit Ire the IIJlt i cipthrl Jhys i c.a I ad
-------
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in the site heullh 1I'd sa'ety pilln.
Ca1t irvn:y p& II... wi &I d.-wel qJId for- the
lite hMtth .-d safety pllIn.
-------
4.1
I
SECTION 4.0
IDENTIFICATION AND SCREENING OF
POTENTIAL IRA OPTIONS
SUMMARY OF THE
SCREENING PROCESS
FS TECHNOLOGY
AND
REMEDIAL
AL TERNATIVE
The 881 Hillside Are~ FS Report (Rockwell Intern~tional, 1988b) was prepared
:1ccording to the EPA Fe~sibility Study Guid~nce (EPA, 1985) available :1t the time. The
initi~1 screening process eliminated infe~sible. in~ppropriate or environmentally unacceptablc
tcchnologies. The following tcchnologies were retained after screening:
11.
12.
13.
14.
15.
1.
~o remedial action - monitoring only (not considered here)
.,
Off-site RCRA landfill
3.
Well lrra ys
4.
Subsuri~c: drains
5.
6.
Soil-bentonite slurry walt
~ulti-layer cap
Grading and vegeta tion
8.
9.
Suriacc \\':1 ter di version
In situ immobilization (grouting)
10.
Soil flushing
CV/P:roxide water treatment
Air stripping water treatment
Activ:1ted carbon adsorption WJter treatment
Discharge to surface-wa ter
Rc-injcction to ground-w:\tcr
Technologies were then combined that are complementary and interrelated, to form
!ternatives that address the site issues :1nd control contaminant pathways. The three watcr
INTERIM REMEDIAl.. ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ei&i\881 \iap-1ed.jan
JANUARY 1990
-------
trl::ltml:nt technologies were :ubjectl:d to a morl: jl:taill:d I:valuatior to dl:tl:rminl: thl: most
cost-I:ffl:ctivl:, rl:liable trl:a:
::nt systl:m for inclusion with the alternatives requiring water
treatml:nt. Provisions of the Supl:rfund Amendments and Reauthorization Act of 1986 (SARA)
also require that alternatives be developed that consider:
Elimin:ltion of long term site management;
.
Reduction of waste toxicity, mobility, or volume;
Waste containment with little or no treatment;
Use of innova ti ve technologies.
The developed alternatives arc as follows:
I.
Collection of ground water using a line of down gradient wells and a source well
at SWMU 119.1, collection of footing drain flow, and n:injection of tr~ated
w:1ter downgradient of the 881 Hillside Area in the Valley Fill Alluvium of the
Woman Crl:ek drainagc.
Collection of ground water using a french drain and a source well at SWML'
119.1. collection of footing drain flow, and reinjection of treated water
downgradient of the 881 Hillside Area in the Valley Fill Alluvium of the Woman
Crl:ek drainage.
~
J.
Collection of ground ""!ater using a french drain and a source well at S\y'ML'
119.1, collection of footing drain flow from. and discharge of treated watcr to
the surface. and in situ treatment of soils using soil flushing.
~.
Totall:ncapsula.tion of source Jreas using a multi-layer cap and slurry wall with
control of gradients by pumping an intl:rnal sump (dewatcring fluids to be
treated at an existing tre:tmcnt plant 1.
~
Pump a source well at SW :L' 119.1. collect footing drain flow. and reinjection
of m:ated warer downg~~~lent oi the 881 Hillside Area in the Valley Fill
Alluvium of rhe Woman Creek drainage.
6.
Immobilization of contaminants using a chemical grout.
Collection of ground w:\ ter using a french drain and a ~Jurce well :It SWML"
119.1. collection of Coating drain flow, reinjection of rreated \\':ltcr
downgradient of the 88 I Hillside in the Valley Fill Alluvium oC the Woman
Creek drainage. and partial removal of soils to a RCRA- pcrmittcd disposal
facility.
as the basis for ,the preliminJry screening of developed alternatives:
Three broad consider:1tions. consistent with the National Contingency Plan. were uscd
~ - The cost of implementing the remedial action was considered including
oper:1ting :lnd maintenance costs. An alternative whosc COSt far exceeds that 01'
others being evaluated without providing significantly greater protection W:lS
eliminated.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
eg&g\881 \iap-..c4.jan
JANUARY 1990
-------
Acc~otabk Engin~~ring Practic~s - Alternatives which do not provide a proven
and reliable means of addressing the problem were eliminated.
Eff~ctiven~~s - Alternatives which do not effectively contribute to the
protection oi public health. welfare, and the environment were eliminated.
Alternatives posing significant adverse environmental effects and only limited.
benefits were also excluded from further consideration.
Of the seven remedial action alternatives developed, four of the alternatives were
climinat~d because they did not provide adequate protection of public health, welfare. and the
environment, or were much more costly without providing significantly greater protection.
The 881 Hillside Area Feasibility Study Report (Rockwell Intcrnational, 1988b) provides the
details of the screening proce~s to this point.
The remaining three alternatives from the FS Report were retained for a further
detailed evaluation based on additional tre:1tment r~Quirements imposed by the DOE
:lgr~cment with the State of Colorado in June 1989. This agreement additionally requires the
:r::ltment of collec:ed ground-water ior removJI oi inorgJnic contaminants including
rJdionuclides until the bJckground .ground WJter study is completed at which time the
[reJtment rCQuirement for inorganics Jnd radionuclides will be re-cvalu:1ted. In addition, the
treated water will be discharged to surfac: water as opposed to ground-water reinjection, as
originally proposed in the FS. The reinjection of treated ground water down gradient of thc
frcnch drain is deemed not to be necessary because of the interaction between surface-water
Jnd alluvial ground-water. The three alternatives remaining arc:
I.
Collection of ground water using a fr~nch drain and a source w~ll, collection
of footing drain flow, treatment oi collected water in a new rre:1tment plJnt Jnd
discharg~ to suriJce WJt~r.
Total encapsulJtion of sourc~ :1reas using a multi-layer cap and slurry wall with
control of gradients by pumping an int~rnal sump (dewatering fluids to be
tr~ated at an ~xi~ting treatm~nt plant).
Pump a source well at SWMU 119.1, collect footing drain flow, treat collectcd
water :1t a ncw treatm~nt plant, and discharge to surface water.
.J.
Thc dctailed analysis of th~ thr~c remaining alternatives is pr~sented in this document
and is based on th~ March 30, 1988 EE/CA Guidance.
Each al terna ti ve is eval ua ted
individually bas~d on effcctivcn~ss, implementability, and cost.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
eg~g\881 \iap-Iec4.jan
JANUARY 1990
-------
4.2
1M/IRA PLAN SCREENING PROCESS
4.2.1
Effecri veness
The criteria for evaluation of effectiveness of removal alternatives includes
protectiveness and use of alternatives to land disposal. Protectiveness includes protection of
the communiry and workers during the removal action; threat reduction (mit;~:ltion of
identified threats); determination of the length of time until protection is achieved;
compliance with chemical- and location-specific ARARs: compliance with criteria, advisories
and guidances; description of porential exposure to residuals remaining on-site; and long-term
reliability for providing continued pro.~=tion. The effectiveness criteria also includes use of
Jlrern:ltives to land disposal, thus promoting utilization of treatment or recycling instead oi
land disposal.
4.:.:
Imolcmenrlbilirv
The criteria for evaluation of implcmentability of removal alternatives includes
t~chnical feasibility, availabiliry. and administr:ltive feasibility.
Technical feasibility
includes the ::lbility to construct the technology ::lnd to maintain its oper:ltion; complianc~ with
action-specific ARARs: ::lbility to meet process efficiencies or performance goals: demonstrated
periorm::lnce; evaluation oi impact of environmental conditions; and compliance with the
SARA requirement th:lt removal actions should contribute to the efficient performance of
long-term remedial acrion to the extent practicable. Availability includes the availability of
necessary equipment, materials ::lnd personnel; ::lvailability of adequate off-site treatment.
storage, and disposal capacity. if appropriate; and description of post-removal site controls
which will be required :It the completion of the action. Administr:ltive feasibility includes
the likelihood of public acceptance of the alternative, including state and local concern:
coordination of activities with other agencies; and ability to obtain any necessary approvals
or permits.
INTERL'vf REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ecckc\881 \iap-..c,.jan
JANUARY 1990
-------
4.2.3
~
The criteria for evaluation of cost of removal alternatives includes total cost and
statutory limits. Total cost includes direct capital costs, indirect capital COStS, and any post- .
removal site control costs. Since the IRA at the 881 Hillside Area is not an EPA-financed
removal aCtion, the $2 million statutory cost limit does not apply.
4.3
GROUND-WATER TREAT\1ENT TECHNOLOGIES EVALUATION
The ground-w:lter tre:ltment technologies that were selected for detailed evaluation
include c:ubon adsorption, tJV Iperoxide (chemical oxidation), and air stripping for organic
compounds, and ion exchange, electrodialysis. and reverse osmosis for inorganic compounds.
The specific tre:ltment systems listed are provided as examples of systems that can provide the
level of tre:ltment needed to meet chemical-specific ARARs for the organic and inorganic
contaminants of concern.
It is recognized that many companies provide similar treatment
systems, and the system ultimately selected for installation will be required to provide the
same level of efficiency as that specified here.
The treatment system selected must be capable of treating 30 gpm of contaminated
ground water with influent characteristics as shown in Table 4-1. The effluent quality must
meet the chemic:ll-specific ARARs.
The 10c:J:ion- and action-specific ARARs are similar for each of the treatmenr
rechnologies. and are discussed in Section 3. Only air stripping has unique action specific
requirements because it is subject to the Colorado Department of Health Air Quality
regulations for the air emissions.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
R.OCKY FLATS PLANT, GOLDEN, COLORADO
el"I\881 \iap-..c..jan
JANUARY 1990
-------
TABLE 4-1
BASIS FOR DESIGN OF
881 HILLSIDE TREATMENT PLANT
ORGANICS
l.JNI'TS
ug/l
ug/l
ug/l
ug/l
ug/l
ugll
ug/l
ug/l
ug/l
ug/I
ug/l
ug/l
~ethylene Chloride
Acetone
C:abon Disulfide
!.I Dichloroethene
1.1 Dichloroethane
1.: Dichloroethane
! .1.1 Trichloroethane
C:abon Tetrachloride
Trichloroethene
:.!.: Trichloroethane
7::! rJchloroethene
T 01 uenc
INFLUENT a
CONCENTRA TYON
-------
TABLE 4-1
(c:oDtiDued)
BASIS FOR DESIGN OF
881 HILLSIDE TREATMENT PLANT
\-fAJOR IONS
t.JNITI
mg/I
mg/I
mg/I
mg/I
mg/I
mg/I
mg/I
mg/I
mg/I
Calcium
\-fagnesium
. Potassium
Sodium
Total Dissolved Solids
Chloride
~itritc & Nitrate
Sulf:ltc
Bic:Jrbonarc As (CaCO,)
R.; D!ONtJCLIDES
Gross Alpha
ss Beta
ium (Total)
3 ntium (89. 90)
Plutonium (:::39. 240)
Amcricum (241)
T~jtium
~
pCil1
pCi/1
pCil1
pCil1
pCilI
pCil1
pCil1
:1
INFL UENT a
CONCENTRA TTON
109.7
26.J
2.7
87.4
718
128
8.29
TREATMENT
REOUTREMENTS
NS
NS
NS
NS
400
250
10
150
NS
122
274
INFL UENT a
CONCENTRA TTON
21.5
17.8
15.4
< l.Ob
<0.01
-------
4.3.1.
Activat~d .Carbon AdsorDrion (OrlZanic Contaminant R~moval)
4.3.1.1 D~scription
For the granular activated carbon (GAC) adsorption system. the ground water will be
pumped through two GAC columns in series operated in down flow fixed-bed mode (Figure 4-
I). A second set of GAC columns for stand-by operation are in parallel to the first set. Each
;:arbon column is 44 inch~s in diameter and 89 inches high, and contains 1,800 pounds of
carbon. Based on a peak flow rate of 30 gpm. the hydraulic loading to each column will b~
approximately 1.4 gpm/ft2. Contact time for each column will be approximately 25 minutes.
To completely utilize th~ carbon. columns are arranged in series allowing the lead column [0
becom~ fully ~xhaust~d before r~generation while: the second (polishing) column ~nsurcs
effluent Quality. Periodic samples will be taken from the effluent of each unit, and when the
lead unit effluent exceeds chemical-specific ARARs. the lead carbon column will be removed,
the polishing (second) column will become the I~ad column. and a stock carbon column
:arbon will b~ put in service as the polishing unit. Th~ c:lrbon column with the exhausted
carbon will then be shipped to an off-site location for regeneration.
~.3.1.: Ef f ecti v~ncss
GAC adsorption systems have been shown to n:move VOCs from contaminated ground
water to lev~ls that comply with the chemical-specific ARARs. The EPA (Federal Regisler,
Vol. 5:, No. 130. page 25698) has designated c:lrbon adsorption a "B~st Available Technology"
lor the removal of sev~n specific vol:ltile organic compounds (including TCE and 1,1.1- TCA)
from drinking water. The GAC adsorption system that is proposed here for the treatment of
the 881 Hillside ground water will be in continuous operation until the concentrations of VOCs
in the ground water decrease to chemical-specific ARAR concentrations. at which time further
tre:ltment will be unnecessary. The probability of equipment failure will be minimized in this
system because of the r~dundancy of having two (2) parallel on-line units. each of which could
treat the design flow.
Two stock units on sit~ add to th~ system reliability.
INTERIM REMEDIAL ACTION PLAN FOR THE aal HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ec&c\88l \iap-Iec4.jan
JANUARY 1990
-------
:02
gt;j
~~
E~
tilt>:!
"Utj
E~
:cI>
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o:j
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tjz
M
z"U
~~
o
1""''':1
00
~~
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OM
INF1UE~..
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00
00
....
:z:
...
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In
a
M
~
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~
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]-
[1
CARTRIDGE
ru rms
now COII1I\'(IL
VALV[ -7
/
~-l,
I
I
I
I
I
L-
I[AD
CARBON
COl.lIMN
POIISI liNG
CARBON
COLUMN
OPERATING UNITS
LEAD POLISHING
CARBON' CARBON
COLUMN COLUMN
(STAHO-BY) (STAND-BY)
ON-LINE STAND-B) UI~ITS
FIGURE 4-1
CARBON ADSORPTION TREATMENT UNIT
TREATED
WATER
-------
Appropriate safety measures required when moving and installing large equipment will
be complied with during installation. The operation and maintenance of the system will be
by personnel who are trained in the handling of hazardous and radioactive wastes. Because
carbon will remove oxygen from the air, any time personnel are working in confined areas.
where oxygen may be limited. special care must be taken to ensure that an adequate air supply
is available.
The operators of the GAC system will not be exposed to VOC-Iaden carbon because the
use of the containerized and transportable carbon contactors allows removal and replacement
of the exhausted carbon at a remote carbon reactivation site. Carbon will not be handled at
the site. Transporting the entire exhausted carbon column to the regeneration f:lcility ensures
oper:ltors He protected from the carbon. and the operators need only follow routine safety
procedures when handling he:lvy equipment.
The exhausted c:lrbon is gener:lIly regenerated through a thermal treatment process
which strips the volatile organics from the c:ubon. The organics He subsequently destroyed
via incineration. During this regener:ltion process. a small quantity of ash may be generated
which requires disposal at a landfill. Thus. this process C:ln be considered an alternative to
land disposal since the c:lrbon is continuously recycled. However, if the spent carbon was
determined to be a mixed waste. then it would require land disposal at the Nevada Test Site.
GAC adsorption tre:ltment in scaled. fixed-bed contr:lctor vessels does not producc any
w:lste stre:lms or vapor cmissions. The safety of nearby communities should not be adversely
Jf[ected and the risk of harm to the environmcnt should not be increased. This trcatment
process will effectively remove organic contamin:lnts [rom the ground water. Tre:ltcd watcr
will be monitored at the effluent and al50 at an intermedi:lte point in the system to ensurc
contaminants are below the chemical-specific ARAR concentrations before being released to
the environment during implementation of the process.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
er.kc\881 \iap...ct.j&n
JANUARY 1990
-------
4.3.1.3
Implemen ta bili ty
GAC adsorption is a proven technology for removinr
(VOCs) from ground water. Testing performed by Calgon
demonstr:lted th:lt activated carbon can remove VOCs to rr
second carbon unit connected in series with the lead unit w~.
will ensure remonl of the VOCs to these levels. The carbon columns "'.
readily installed in the treatment building. The system should be ready to operate ia.
capacity, after initial adjustments and test runs, within a day.
It is estimated that approximately:: man-hours of operator time will be needed daily,
primarily for start up, shutdown, and system monitoring. Periodic change-out of the carbon
units and maintenance of the equipment will require approxim:ltely 16 hours per month, thus
the total labor requirement will be 76 hours/month.
~.3.IA
Costs
Results of the trcatability study indic:nc the carbon usage rate will be 3.1 pounds per
1,000 gallons of ground \Va tcr, based on bre:lkthrough oi methylene chloride (Rockwell
Intern:nion:ll, 1988b). At:l cost of approxim:1tely 51.15 per pound for regener:lted carbon. the
annual costs are estimated to be $18.600 for c:lrbon (based on an average flow rate of 10 gpm).
The cost of shipping contaminated carbon (as a manifested hazardous waste) for regeneration
is estimated to be S2,500 and $500 for receiving regener:lted carbon. for a total of $3.000 per
exchange. If the spent carbon requires disposal at the Nevada Test Site as a mixed waste, this
cost could change substantially. Annual operation and maintenance costs are based on 76
hours per mon th a tala bor ra te of S61 /hour.
Using the preceding information, the estimated capital costs for installing a carbon
adsorption system and the estimated annual operating costs are shown in Table 4-2. Total COSt
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
eg&I\881 \iap-Iec4.jan
JANUARY 1990
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TABLE 4-2
ESTIMA TED COSTS FOR CARBON ADSORPTION SYSTEM
ITEM
CAPIT AL COST
(Dollars)
ANNU AL COST
(Doilarsl
Buildingl
Carbon Treatment System
162.500
79.000
Opcr:lting Costs:
Carbon Purchases::
Shipping.
Power S
Operation and :v1ainten:J.nc:5
18.600
: 7 .000
600
55.600
-.--------------------------------------------------------------------------------------------------------~---------
TOTAL
5:41.500
~__m_-.----------------.--.----------------_.-.--_.-----_._-_.-_.-~--==
5101.800
1 Volatile organic treatment system assigned
:: Based on a flowrate of 30 gpm. 8 hr/d
39 loads/yr @ Sl.l5/lb
. 9 uni tSI yr @ S3.000 each
5 ~ HP. 8 hr/d @ 50.07/kWh
\) 76 hr I month @ S611hr
1/2 of building cost
PR ESE):T \VOR TH:
Prcs::'1t Worth Factor (PWF) 2 9.4:-:- (for annual opcr:lting :OStSI
SI01.800/ye:u x 9.427 .
1989 Capital Cost ..
S 960.000
S :~ 1.500
S 1.:0 1.500
LN'I'ERIM REMEDIAL ACTION PLAli FOR 'I'RE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
8.&c,\881 \iap-Md.jaa
JANUARY 11190
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(Present Worth) of the GAC adsorption system based on 10 percent simple interest, a 30-year
duration of operation, and no salvage value. is estimated to be about $1,201,500.
4.3.2
Ultraviolet (UV) Peroxide Oxidation (Or\!anic Contaminant Removal)
4.3.2.J
Descri ption
The UV /peroxide treatment unit as designed by one manufacturer, consists of an 80-
gallon stainless-ste=! oxidation chamber. which provides for a maximum ground-water
retcntion time of 2.66 minutes at a peak system flowrate of 30 gpm (Figure 4-2).
The oxidation chamber contains 4 medium pressure UV lamps, which are mounted
horizontally in quartz sheaths.
A hydrogen peroxide feed system is used to inject
approximately 50 mg/I (per ppm of organic contaminants) of a 50 percent HzOz solution into
the ground-water feed line. The ground-water/peroxide mixture then passes through an in-
, line static mixer beiore entering the bottom oi the oxidation ch3mber. The ground water then
flows through the rC3ction ch3mber, p3ssing the UV lamps, before it exits the top of the
oxid3tion ch3mber.
..U.:.:
Effectiveness
The UV /peroxide system is capable of removing all of the volatile organics from the
ground w3ter to levels below the chemic31-specific ARARs. Bench- sC31e studies. using 881
Hillside Area water. were conducted by P:roxidation Systems, Inc. (Rockwell International.
1988b). The bench-sc3le tcsting unit provided :1 dynamic flow simulation of the process to
evaluate the parameters necess3ry to assure treatment effectiveness and unit sizing.
Parameters investig:lted during the testing included hydrogen peroxide (H20::) dosage 3nd
power requirements, retention time, system pH, 3nd influent/effluent chemical conditions.
Alluvial groundwater from monitoring well 9-74 was blended with footing drain water to
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ecokc\881 \iap-..ct.jan
JANUAR Y 1990
-------
-------
'1\JFLIJEi'JT WATER
.
:-------~I
I
UV OXIDATIO~~
CHAMBER
n/~1
I r-,
I \ I
I '
i I' ,~'
I '
I
H'"I 0'"1
FEED
FIGURE 4-2
UV /PEROXIDE SYSTEM
...-'. co'" '.-.:.~d ...:-: .
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
TREATED
WATER
r'JOT TCI
,-.-. "'. I r-
:.: '--MI.-I:..
RJ7C02.PJ-082:\89
JANUARY 199o
-------
simulate the expected influent chemical conditions.
Results from this testing provided
information on H::02 dosage. However. to establish the reaction rates essential to sizing the
treatment unit, an un blended sample was tested. Contaminant concentrations were reduced
to non-getectable levels for initial ground-water influent total VOC concentrations of I ppm.'
These results indicate that the UV /peroxide ground-water treatment process is capable of
achieving the effluent criteria for all of the volatile organics listed in Table 4-1. The volatile
organics will be completely oxidized to carbon dioxide, water. and chloride, and no organic
degradation products will be produced. The system will remain in operation until the ground
water has been fully treated to these levels.
The system reQuires periodic UV lamp
replacement and routine maintenance. but is expected to ha ve long-term reliability in terms
of operation and performance. The risk of failure of the system at any time is highly unlikely.
Since the volatile organics are destroyed in the UV /peroxide system, no wastes are produced
which reQuire ultimate disposal.
While the presence of ferrous iron can impede the
effectiveness of the UV /peroxide treatment system due to the precipitation of ferric iron, the.
manufacturer has indicated that this will not be a problem at the iron concentrations expected.
However, should ferric iron precipitation problems Hise. appropriate pretreatment such ::IS
aeration will be implemented to correct this problem.
During oper:ltion of the UV /peroxide ground-water treatment unit, the use of hydrogen
peroxide, a strong oxidizer, will reQuire that operators are aware of this potential hazard. The
H..O.. bulk storage tank will be properlv vented to assure no pressure buildup and minimize
. - ...
handling exposure. E.'{isting DOE and Rockwell health and safety guidelines at Rocky Flats
regarding operator safety while working with strong oxidizers will be followed. UV lamps
operate utilizing high voltage, and thus caution must be used when working with the system
and during the periodic replacement of the UV lamps.
The safety of nearby communities should not be adversely affected and the risk at'
harm to the environment should not be increased' as this treatment process will effectively
destroy ground-water contaminants. Treated w:lter will be monitored to ensure contaminants
are within n:gul:ltory guidelines before being released to the environment.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
eioki\881 \iap-1ec4.jan
JANUARY 1990
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4.3.2.3' Implementability
UV /peroxide oxidation is an innovative technology for the complete destruction and
detoxification of hazardous organic compounds in aqueous solutions. Although the technology.
is relatively new and has had limited application in the field, SARA requires EPA to prefer
remedial actions that significantly and permanently reduce the toxicity, mobility, or volume
of hazardous wastes by employing innovative technologies that result in the destruction or
detoxification of the wastes.
Demo:1strated performance
the UV /per:'
~e ground-water treatment system h:ls
be:n some'..
: limited due to the r:1atively new development of the process.
However.
Peroxid::uion Systems, Inc. has 6 UV /peroxide units currently operational or on-line and ready
f or operation.
One of these units is located at Rocketdyne's Santa Susana facility in
California. Pilot scale oper:ltions were performed by Peroxidation Systems, Inc., on ground
water containing VOCs (TCA. TCE, :tc.) :It system flow rates of :lpproximately 20-40 gpm.
Results from the pilot scale testing were f:lvor:lble, and :l UV /peroxide ground-water
treatment unit h:ls been purchased, set-up. :lnd site tested. Another UV /peroxide ground-
water treatment system. located locally. was visited and :lppe:lred to be a low maintenance,
highly eL ~:tive ground-water treatment unit. This system was treating ground water with
TCA concentrations significantly lower th:ln those found at the 881 Hillside (approximately
i ppb). However. the tre:ltment process h:ld initially and effectively treated ground water
with much higher concentrations. Based upon actual bench scale results using 881 Hillside
ground W:lter and information received reg:lrding currently oper:lting treatment systems. the
innovative CV/peroxide ground-water tr::ac:nent system :lppears to be a reliable treatment
technology.
Operating :lnd m:lintenance requirements for the UV /peroxide treatment system :lrc
relatively minor.
The system will require :lpproximately 180 kW of power and 6.100
pounds/ye:lr of 50 percent H:O: solution for normal operation. Routine maintenance of thc
equipment is required and the UV lamps will require replacement approximately every 3-6
INTERL'i REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, COLDEN, COLORADO
er.kr\881 \iap-..ct.jan
JANUARY 1990
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months. Routine system maintenance is estimated to be approximately 16 hours/month. An
additional two hours per day will be required for system start up, shutdown, and monitoring.
All four system UV lamps can be exchangcd in about an hour. The system requires only
occasional observation to ensure the system is operating properly, although system alarms will .
notify opera tors if a pro blem does occur.
4.3.2.4
Costs
Estimated costs for the UV /peroxide ground-water tre:Hment unit are shown in Table
4-3.
Capital cost for the UV /peroxide ground-water treatment system is approximately
5382,500. Operational COStS include procurement of hydrogen peroxide (6,100 pounds/yean.
power utilization (180 kW), labor (76 hours/month), and lamp replacement (every 3-6 months
at a COSt of S300/Iamp). Operational casts are based on a system flow rate of 30 gpm, 8 hours
per day. Assuming a 10% interest rate and a 30 year operating life, the present worth of the
system is S 1,329,500.
4.3.3
Air Srriooing wirh Orf-Gas Tr~:1tm~nt (Org:lnic Cont:1min:1nt Remcv:11)
4.3.3.1
Description
During air stripping, VOCs arc tr:1nsferred from the water to a continuously flowing
airstream which is in direct contact with thc Water (Figure 4-3). Influcnt contaminated ground
water will enter the tOp of a ::-inch di:1meter, 34-foot air stripping column :1nd subsequently
contact clean air supplied through the bottom of the column (column sizes :1re approximatc).
Appropriate air-to-w:lter flow rates will be utilized to provide for the optimum (99+%) transfcr
of the contaminants from the ground water to the air stream. The treated ground water will
then be pumped through
a
I,SOO-pound
liquid phase carbon treatment polishing unit
(identica~ to the one described in Section 4.3.1). The relative humidity of the air stripper
emissions will be reduccd by use of a hcater. and then passed through a vapor phase carbon
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
'l&i\881 \iap-.'c4.jan
JANUARY 1990
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TABLE 4-3
OVERALL COSTS FOR THE UV /PEROXIDE
GROUND-WATER TREATMENT UNIT
ITEM
CAPITAL COST
(Dollars)
ANNU AL COST
(Dollars)
Buildingl
S 162.500
Treatment Unit & Equipment
220.000
Oper:uing Costs:
. Hydrofen Peroxide'
- Power
. Lamp ReplacementS
. Operation and Maintenance'S
3.000
36.800
5.000
55.600
---------------------------------------------
---........
~--------------------------------_.----------
TOT A L;
UV /Peroxide
S 382.500
S 100.400
a__....------------------.-.------------------------------------.....-.-
1 Volatile organic treatment system assigned 1/2 of building cost
: Oper:uing costs based upon a ilowr:ue of 30 gpm. 8 hr/d
3 50.S2/1b x 6100 lb/yr
4 ! 80 kW. 8 hr/d @ 50.07/kWh
s 4 timesl vear
6 76 hrs/~onth @ 561 /hr
PRESE"1T WORTH
Present Worth Factor (PWF) . 9.427 (for annual operating costs)
S 100AOO/year x 9.427 ..
1989 capital cost.
5 947.000
S 382.500
51.329.500
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
.,41,\881 \iap-HC".jan
JANUARY 1990
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INFLUENT
WA TER
/ "
,/ '"
/ "
- "}.-,,,-;1\-c,r4
I
I
,-
---J'- ( (-\
-../\ -
I
~
I
i' ~IR I
-TRIPPING
r TOWER
..:.IR =1 (lwE=
\ --- I,
'-
AIR PREH EATER
TREATED AIR
,
TO ATMOSPHERE
VAPOR PHASE CARBO~J
ADSORPTION S'(STE~11
I I
6
""-E' 'T"-'-,
I r-;: ~. I t:.!..,..
WATER
LIQUID PHASE
CARBON ADSORPTIO~J
SYSTEM
NOT TO :.CALE
FIGURE 4-3
AIR STRIPPING WITH VAPOR PHASE
AND LIQUID PHASE CARSON ADSORPTION
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLA':"S PLANT. GOLDEN, COLORADO
.;...'. :'C'.\:"'-_:-'3~1 .--:
IUlUOJJ'J-08~B9
JANUARY 19GO
-------
system to remove the organics before being released to the environment. The vapor phase
carbon unit will contain 2,000 pounds of carbon.
4.3.3.2
Eff ecti veness
The use of an air stripper is a highly effective method of removing hazardous volatile
organic compounds (VQCs) from ground water.
The efficiency of the process is well
documented. The Environmental Protection Agency (Feder:!1 Re2ister), Vol. 52, No. 130, page
:5698) has designated packed tower aeration along with granular activated carbon, as a Best
A vailable Technology (BAT) for the removal of VQCs from drinking water.
An air stripper coupled with liquid and vapor phase carbon adsorption is a proven
system that has a dependable record of use. It is expected that this treatment process, with
proper maintenance, will provide the desired level of contaminant control until complete
remediation of the 881 Hillside Area has been achieved.
The probability of equipment failure will be minimized because the system is oversized
for the intended maximum flow of 30 gpm and includes two vapor phase carbon units - one
installed and one stock. The stock on site unit adds to the system reliability. All appropriate
safety measures required when moving and installing large equipment will be complied with
during instal1atioq.
The operation and maintenance of the system will be performed by
personnel properly trained in the handling of hazardous and radioactive Wastes. Because
c:lrbon will remove oxygen irom [he air, whenever personnel are working in confined areas
. (i.e.. tanks), special care must be taken to ensure [hat an adequate air supply is available.
The operators of the system will not be exposed to VQC-laden carbon from the vapor
phase or liquid phase carbon units because the use of containerized and transportable carbon
contractors allows removal and replacement of the exhausted carbon at a remote carbon
reactivation site. Carbon will not be handled at the site. Transporting the entire exhausted
INTERL'\{ REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA.
ROCKY FLATS PLANT, GOLDEN, COLORADO
el~I\881 \iap-1ect.jan
JANUARY 1990
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c:lrbon column itself to the regeneration facility ensures operators are protected from the
carbon itself, and need only follow routine safety procedures when handling heavy equipment.
The exhausted carbon is generally regenerated through a thermal treatment process.
which strips the volatile organics from the carbon. The organics are subsequently destroyed
via incineration. During this regeneration process, a small quantity of ash may be generated
which requires disposal at a landfill. Thus, this process can be considered an alternative to
land disposal since the carbon is continuously recycled. However, if the spent liquid phase
carbon was determined do be a mixed waste, then it would require land disposal at the Nevada
Test site. The vapor phase carbon adsorption system will remove the organics from the iir
stripper emissions before being released to the environment. Therefore, the vapor phase
carbon adsorption system will eliminate the impact of any air stripper emissions on the public
health. The safety of nearby communities should not be adversely affected and the risk of
harm to the environment should not be increased.
Treated water and air will be monitored
to ensure contaminant levels are within regulatory guidelines before being released to the
environment.
.U.3.3
I mplemen t:l bili t Y
The :lir stripper will remove greater than 99% of the contaminants in the ground water.
Bec:luse the air stripper perform:lnce is sensitive to changes in flow and contaminant
concentrations. a liquid ph:lse carbon :ldsorption unit is in series with the :lir stripper to
::nh:lnce system perform:lnc: and to ensure that the tre:lted effluent meets chemical-specific
:~Rr\Rs for volatile org:lnic compounds. Based on :l flow r:lte of 30 gpm. 8 hours per day,
liquid phase carbon usage will be approxim:ltely 9 pounds/d:lY and each 1,800-pound c:lrbon
unit will require repl:lcement approximately every six months. Vapor phase carbon usage will
be :lpproximately 10 pounds/day :lnd each 2.000-pound carbon unit will require replacement
approximately every six months.
INTERL"wi REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ec.kc\881 \iap-Iec4.jan
JANUARY 1990
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Oper:uion of the treatment process is relatively simple, requiring occasional cleaning
of the air stripping column and replacement of carbon. The air stripper will require cleaning
to remove scale buildup on the packing material in order to maintain o~Ptimum removal
efficiency. Effluent from the cleaning operation will require treatment in the Building 374 .
Process Waste Treatment System. Transportation and regeneration of the liquid phase and
vapor phase carbon units at a remote carbon reactivation site will be required.
The air
stripping with off-gas treatment system for remediating YOC contaminated ground water is
available commercially and could be implemented quickly. No difficulties are anticipated
during the installation and start-up of this treatment system.
Replacement of the spent
carbon and other maintenance activities are expected to require approximately 16 hours per
month. Daily operation of the system will require two hours per day.
4.3.3.4
Costs
Estimated costs for the air stripping ground-water treatment system are shown in Table
4-4. The total capital cost for the system is $257,500. The liquid phase carbon unit is the samc
unit described in Section 4.3.1. The majority of the operating costs result from the replacement
of spent vapor phase and liquid phase carbon.
These costs were derived from the samc
treatability study results and unit pricing prcsentcd in Section 4.3.1.4. It should be noted that
these operating costs are based on regeneration of the spent carbon as a hazardous waste. If
the spent carbon requires disposal at the Nevada Test Site as a mixed waste, these costs could
:hange su bstantiall y.
The total present worth cost of the system based on 10% simple interest, a 30 year
period of operation, and no salvage is estimated to be approximately $960,000. These costs do
not include any capital or operating costs for the Building 374 Process Waste Treatmerit System
associated with the treatment of the air stripper cleaning effluent.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
erlkr\881 \iap-.8d.jan
JANUARY 1990
-------
TABLE 4-4
OVERALL COSTS FOR THE AIR STRIPPER
GROUND-WATER TREATMENT UNIT
ITEM
CAPIT AL COST
(Dollusl
Buildingl
S162.500
Treatment Unit & EQuipment
Air Stripper Column
liQuid Phase Carbon System
Vapor Phase Carbon System
Oper:1ting Costs:
liQuid phase c:lrbon3
Vapor phase c:lrbon 4
ShipPing 5
Power ~
Operation and Maintenance" (76 hr/mol
:5.000
45.000
:5.000
ANNU AL COST
(Dollars)
$
~.200
4.000
1:.000
800
55.600
TOTAL
S 157.500
---------------------------------------------------------------------------------------------------------------------
$
-; ~.500
----.---------.---.-.....------------------.-..-.--.-.----......-.......
1 Volatile organic m::ument systen, assigned !,'1 of building cost
: Operating costS are b:lsed upon flowrate of 30 gpm. 8 hod.
3 : loads/vcJr (cj) 51.15/lb
. : loads/ year @ 51.00/ I b
5 ~ units/year @ 53.000 cach
~ 5HP. 8 hr/d @ 50.07 /k Wh
7' 76 hr/month @ S61, hr
PRESENT wORTH
Present Worth F:1ctor (PWF) :a 9.427 (for annual operating costs)
$74.500/yc::u x 9.427 a
1989 c:lpital cost a
$703.000
$:57 000
$960.500
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
R.OCKY FLATS PLANT, GOLDEN, COLORADO
ed'Ir\881 \ ia~..ec4.jan
JANUARY Il/QO
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4.3.4
Ion Exchan2e Treatment (Inor2anic Contaminant Removal)
4.3.4.1
Description
The ion exchange treatment system consistS of multiple units staged to remove the
inorganic contaminants from the ground-water (Figure 4-4). In the first stage, uranium is
removed in a strong base anion unit. Next, heavy metals including strontium and manganese
are removed with a weak acid cation unit. This unit also removes the total dissolved solids
(TDS) associated with carbonate hardness with subsequent production of carbonic acid. The
carbonic acid formed is removed by decarbonation (air stripping). Following decarbonati\on.
the flow is split between a two-bed demineralizer for TDS removal and an activated alumina
unit for selenium removal.
The two-bed demineralizer consists of a strong acid cation
exchanger and an anion exchanger arranged in series to further reduce TDS. The tre:lted
waters from the demineralizer and activated alumina units will be blended. resulting in a final
effluent which will meet all chemical-specific ARARs. A split f!ow is cost effective as it is
unnecessary to completely demineralize the entire flow. The ion exchange and activ:lted
. -
alumina resins both require periodic regeneration using HCl or NaOH. Rocky Flats' potable
water supply will provide the water for regeneration of all the units. The regeneration wastes
would be sent to the Building 3i4 Proc::ss Waste Tre:ltment System for final treatment and
disposal.
4.3.4.2
Ef f ecti veness
Ion exchange treatment technology has been proven to remove inorganic contaminants
from groundwater to levels that comply with the chemical- specific ARARs. Resins used to
adsorb contaminants require regener:ltion to maintain treatment levels.
All appropriate safety measures required when moving and installing large equip-ment
will be complied with during installation. Use of acids and caustics will require that operators
are aware of this potential hazard. The operation of the system will be by personnel that are
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN COLORADO
el&I\881 \iap-.8d.jan .
JANUARY 1990
-------
.~~
;o~
:~~
o:~~1
.>-1
.: C4
:'11
;E~
!i>
2~
b~
t'J'1I
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o
t"'".I
00
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...
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8
t'J
E
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» ~
:1~ ....
t'J -< 3
...... ...,
:,!S! '0
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0..)
~
to
INfL-Un
WA TE H
SlROIJG [jA~l
.ANION I JHIT
IHA- .1G~
IJO IE:
I I_I, lu
~111.j-SfJHE RE
-_t
IILI I Jo0H
I I
CA lIU11 LlIIIl I AlliuN UNIT I
IF<- I.?O : IRA-94/402 :
I I
I I
.--.-- I I
.J .J
~
I
I I
I I
I I .---.-...--------------
W[Ah AUO : (I[CAF,[KHIAIOR .
CA lIOt I UNIl :
IF~C-84 ,
SP£I n ALII)
TO BUIt[JIlIG 374
--
-
ACTIVATED ALUMINA UNIT
RESIlIS DESIGI'IAlEIl
BY ROIIM $.: HAAS
FIGURE 4-4
ION EXCHANGE
-----
-- ---
--,
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
._---------_J
I
,
SPENT CAUSTIC
TO BUILDING 374
-,
I
I
- t
--. - - ---------
n ~--.
I
I
- .~-
I
I
I
-. I
-- I I
' ----- ~ I
TREATED
WATER
.
d-- --- lJoOH
I
J
----
-------
properly supervised and trained. Treated water will be monitored to ensure that the removal
of inorganic contaminants is maintained prior to discharge to the environment.
Over 99% of the uranium passing through the system will be removed in the strong base.
anion exchange unit containing Rohm and Haas IRA-402 in the chloride form. This unit will
selectively remove uranium, while allowing the other metaJs and major ions to pass through.
This is very advantageous because only this unit will be accumulating the radioactivity. This
unit will not be regenerated because uranium is not readily desorbed from the resin. Instead,
the unit will be shipped off-site and disposed as a low level radioactive waste when its activity
reaches a predetermin::.; level. Based on an influent uranium concentration of 16 pCi/1 and
resin volume of 28 ft3, this unit could be run for more th'an 30 years without exhausting the
resin.
The second exchange unit is a weakly acidic c:1tion exchanger operated in the hydrogen
form. The use of a weakly acidic resin has several advantages for this application. including
high regener:1tion efficiency, high operating capacity for carbonate hardness. and a strong
affinity for heavy metals. Rohm & Haas IRC-84 is the resin selected for its ability to remove
all heavy metals of int::rest. In addition, the hardness associated with bicarbonate alkalinity
is transformed by the exchange of hydrogen ions into carbonic acid which is removed in J
decarbonator where carbon dioxide is vented to the atmosphere.
Reduction of dissolved solids is effected by a two-bed demineralizer designed to work
in conjunction with the wcak acid cation exchanger and decarbonator. Rohm & Haas IR-120
is the resin of choice for the strong acid cation resin exchange. The anion portion of the two-
bed demineralizer will be composed of both strong base and weak base anion resins in a
"stratified bed" configuration. While a weak base resin alone would normally suffice here, the
acidity of the weak base resin would require subsequent caustic addition for pH contro!. The
inclusion of about 30% of a strong base resin in the anion exchange unit results in a neutral
pH with only a small penalty in caustic consumption. The resins of choice here are Rohm &
Haas Stratabed quality IRA-94 and IRA-402, respectively.
7he weak acid cation unit
INTERIM REMEDIAL ACTION PLAN .FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
el&I\881 \iap-.ec4.jan
JANUARY 1990
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preceding the decarbonator will be regenerated with the regenerate ftom the strong acid unit
to effectively utilize the acid regenerate. The two-bed demineralizer is capable of removing
TDS to as low as 10 to 20 ppm.
To lower capital costs by reducing the equipment sizes. only one-third of the flow need
be demineralized to obtain the ARAR for TDS. The other two- thirds of the flow would be
fed through the activated alumina unit for selenium removal. Actual design conditions have
been selected for a 50/50 flow spilt to be conservative. This design reduces the volume of
regenerate chemicals needed as well as waste water produced. compared with sending all of
the flow through the demineralizer. Activated alumina regenerated with caustic soda and
operating on the slightly acidic effluent from the decarbonator provides the conditions to
optimize the selective adsorption of selenium. With a 50/50 flow split, the ARARs for both
TDS and selenium would be easily achieved in the final effluent. This system will include J
conductivity controller on the final plant effluent to automatically maintain the desired TDS
level.
The safety of nearby communities should not be adversely affected and the risk of
harm to the environment should not be increased as this treatment process will effectively
remove inorganic contaminants from the ground water.
..U.4.3
Implemen tabili ty
Ion exchange technology utilizes specific resins to remove by adsorption the ground-
watcr contaminants including hcavy mctals and total dissolved solids. Resins are selected
based on contaminants to be removed. Ion exchange units are commercially available off.
the-shelf systems that can be purchased and installed readily. The operation of ion exchangers
require the resins to be periodically regenerated before treatment can resume. The regenerated
waste products will require additional treatment in the Building 374 Process Waste Tre:ltment
System.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN, COLORADO
er"'r\881 \iap-..ct.jan
JANUARY 1990
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The proposed system is designed for ease of operation and minimizes the volume of
regeneration wastes requiring treatment in the Building 374 Process Waste Treatment System.
Based on a flow rate of 30 gpm, 8 hours per day, and the influent characteristics indicated in
Table 4-1, regeneration of the exchange resins will be needed once every three days. A total'
of approximately 6,000 gallons of waste water will be produced each regeneration period.
This is equivalent to 14,000 gallons per week. It is estimated that the system will require 40
man-hours per month for operating, maintenance, and monitoring. The majority of this time
is required during the regeneration periods.
';.3.4.4
Costs
Estimated capital and operational costs for the ion exchange treatment unit are shown
in Table 4-5. The capital cost for the ion exchange system is 5287,500. The operational costs
include labor, power consumption, annual replacement of the strong base anion unit, and the
procurement of hydrochloric acid and sodium hydroxide used for regeneration of the ionic
resi ns.
Assuming a 10% int(:rest rate, a 30-year operating life, and no salvage value, the present
worth of the system is 5699,500. These costs do not include any capital or operating costs
associated with the treatment and final disposal of the ion exchange and activated alumina
regeneration wastes. These waste streams will be treated in the Building 374 Process Wast(:
Treatment System.
The other two inorganic treatment systems b(:ing considered for use
(electrodialysis and reverse osmosis) also will be utilizing Building 374 for treatment of waste
prod ucts.
INTERIM REMEDIAL AC'I'ION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
8r&r\881 \iap-..d.jan
JANUARY 1990
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TABLE 4-5
OVERALL COSTS FOR THE ION EXCHANGE
GROUND-WATER TREATMENT UNIT
ITEM
CAPITAL COST
(Dollarsl
Building 1
S 162.500
Treatment Unit & Equipment
125.000
Operating Costs:
. Acid3
. Caustic.
. Power S
. Strong Base A.nion Unit Repl:lcc:ment6
- Operation :lnd :v1ainten:lnce~
ANNUAL COST
IDoll:1rSI
2.300
1.600
1.800
9.000
:9.000
------------------------------------------------------------------------------------------------.--------------------
TOTAL
5287.500
~.._-------------------------_._----.--..--------------______8888_======
$ 43.700
1 Inorganic treatment system assigned 1,-: of building cost
= Based on a f!owrate of 30 gpm. 8 hr/d with a recycle stream ~A hr/d
3 3.08 [b/IOOO gal @ SO.14/lb for "100% HCI
. :A5 lbllOOO gal @ SO.I25/1b for 100% NaOH
S J HP. :4 hr/d @ 50.07 r'kWh
6 1 / year
7 JO hrs/ month @ S61 /hour
PR ESE~T WORTH
Present Worth Factor (PWF) ~ 9.427 (for annual operating costS)
$43. iOO/year x 9.427 ~
1989 capital cost ~
$412.000
S287.500
5699.500
INTERIM REMEDIAL ACTION PLAN FOR T:!E 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ec~r\811 \iap-..d.jaD
JANUARY 19VO
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4.3.5
Electrodialvsis (Inor2anic Contaminant Removal)
4.3.5.1. Description
In the electrodialysis process, the application of an electrical potential between a
cathode and anode causes the separation of ionic components of a solution.
This is
accomplished by alternately placing anionic and cationic semipermeable membranes across the
current pathway. When a current is applied, the cations migrate toward the negative electrode
and the anions migrate toward the positive electrode. Because of the alternate spacing of
cation- and anion-permeable membranes, cells of concentrated and dilute salts are formed.
The electrodialysis process is shown in Figure 4-5.
Because electrodialysis will not meet
ARAR-based performance standards for selenium, ion exchange will also be required for
effective treatment. Furthermore, to avoid uranium loading on the selenium-specific exchange
unit (which would ultimately render it non-regenerable), a uranium-specific exchange unit is
necessary. Thus, the first unit used is a strong base anion exchanger designed selectively for
uranium removal. The ground water is then passed through an activated alumina unit prior
to electrodialysis to achieve selenium removal. This is necessary since vendors have indicated
that electrodialysis may not be capable of removing selenium to the ARAR of 0.01 mgjl. The
activated alumina would be sized to require regener:ltion once every three days. Rocky Flats'
potable water supply will be used to provide the water for regeneration.Following the
activated alumina unit, ground water to be treated is pumped through the electrodialysis
membranes which are separated by spacers and assembled into stacks. As the water passes
through, the salinity becomes more concentrated in one space, and less concentrated in the
adjacent space.
The water is passed through several stacks until the desired salinity
concentrations an: achieved. The water is usually retained for about 10 to 20 seconds in :l
single stack or stage. This process may be operated in either a continuous or batch mode.
Multiple units can be arranged either in parallel to provide the necessary hydraulic capacity
or in series to effect the desire4 degree of demineralization.
Makeup water is used to
continuously clean the semipermeable membranes during operation.
INTERIM R.E.'-£EDlAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ec&c\881 \iap-Iec4.jan
JANUARY 1990
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4.3.5.2
Err ecti veness
Electrodialysis ~s capable of removing all of the inorganics to below the chemical-
specific ARARs except for selenium. To accomplish the selenium removal, the activated.
alumina unit is used. Total dissolved solids (TDS) reduction can be controlled by adjusting
the current level in the electrodialysis unit. The system would be operated until the inorganic
chemical-specific ARARs in the ground water are all met, at which time further treatment
will be unnecessary. A strong base anion unit is used to remove the uranium. This unit will
not be regenerated, but will be periodically disposed as a low-level radioactive waste and
replaced. In this way, no radioactive regenerate wastes will be produced, and only one unit
need be handled and disposed as a radioactive waste.
Appropriate safety measures required when moving and installing large equipment will
be complied with during construction. The operation and maintenance of the system will be
by personnel who arc trained in the handling of hazardous chemicals as well as hazardous and
radioactive wastes. The operators will not be exposed to any chemical hazards during routine
system operation. The safety of nearby communities should not be adversely affected and the
risk of harm to the environment should not be increased.
The only other waste generated from the process requiring ultimate landfill disposal
will be the sa.lts produced in the Building 374 Process Waste Tre:ltment System. Thus, this
alternative minimizes the amount of waste requiring land disposal.
1 ... - "
.....).)..)
I mplemen ta bili ty
While no trea ta bili ty studies ha ve been performed, process mOdeling indica tes tha t the
activated alumina, strong base cation, and electrodialysis units would meet all of the
performance goals. A discussion of the performance efficiency and implementability of the
activated alumina and strong base anion units is given in Section 4.3.4.3. Electrodialysis is not
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
erckr\881 \i~p-..c..jsn
JANUARY 1990
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a widely used technology for this type of application, and the number of case studies 3vailable
for comparison is limited.
One problem associated with the use of the electrodialysis process involves the use.of .
the semipermeable membranes. These membranes are non-chemical- specific and cannot be
designed to selectively remove the metals of concern from the ground water. As with other
membrane processes, scaling and clogginOg of the membranes with salts of low solubility is a
potential problem. Precise process control and system monitoring arc required to ensure proper
membrane operation. The concentrate from the electrodialysis unit and the activated alumina
regeneration waste will both be tre:lted in the Building 374 Process Waste Treatment System.
Approximately 10% of the influent flow to the electrodialysis unit will be rejected as
concentr:w:. This concentrate. along with the activated alumina regeneration waste, will total
approximately 15.000 gallons per week. Since the concentrate will be sent to Building 374,
only 90% of the influent flow will be returned as treated effluent to the South Interceptor
Trench (see Section 4.5). The consumptive use of ground-water potentially tributary to the
° .
South Platte River normally requires an approved augmentation plan from the Colorado State
Engineer; however. an augmentation plan will not be required for the IRA because it is a
CERCLA action. Nevertheless the 10% return flow deficit will be replaced by the addition
of water from the Rocky Flats Plant potable water supply prior to discharge.
It is estimated that 60 man-hours per month will be required for operation.
maintenance. and system monitoring. Most of this time will be required during the activated
al umina regeneration periods. and for monitoring of proper membrane function.
4.3.5.4
Costs
Estimated costs for the electrodialysis treatment unit arc shown in Table 4- 6. Capital
costs for the electrodialysis system are approximately $307.500. Operational costs include the
procurement of acid and caustic for activated alumina regeneration, replacement of resins and
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
esokc\881 \iap-..c..jan
JANUARY 1990
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TABLE 4-6
OVERALL COSTS FOR THE ELECTRO DIAL YSIS
GROUND-WATER TREATMENT UNIT
rTEM
CAPIT AL COST
(Dolla rs)
Buildingl
S 162.500
Tre:ument Unit & EQuipment
145.000
Operating Costs:
. Acid3
. Caustic4
. Powers
. Membranes';
. Strong Base Anion Unit Replace:":..:t j"
. Operation and Mainten:1nced
ANNUAL COST
(Doll:lrs)
500
500
1.800
1.100
9.000
~~.OOO
--------------------------------------------------------------------------------------------------------------------
TOTAL
S307.500
a______-----------------------------------------------_._---______m~~.=a
S 56.900
1 Inorganic treatment 'system assigned 1/: of building cost
: Based on a flowrate of 30 gpm. 8 hr/d
~ ').67 Ib/1 000 gal @ SO. I ~/lb or 100% HCI
~.76 IbilOOO gal @ SO.I:S/Ib for 100% NaOH
:8 kWhllOOO gal @ SO.Oi/kWh
~ 50.02/ I 000 gal
, I' vr
" 60' hrs/ month @ 561,' hour
PRESENT WORTH
Present Worth Factor (PWF) :a 9.427 (for annual operating coStS)
S56.900/year x 9.427 :a
1989 capital cost.
S537,OOO
$307 500
5844.500
INTERIM REMEDIAL ACTION PI.AN FOR THE 881 HILLSIDE AREA
a.OCKY FLATS PL.\N'r. COLDEN, COLORADO
".,\881 \iap-e8C6.jaa
J.AHUARY 111;0
-------
membranes. labor. and power consumption. The present worth for the system based on a 10%
simple interest rate. a 30-year duration of operation. and no salvage value. is estimated to be
$844.500.
These costs do not include any capital or operating costs associated with the treatment
and final disposal of the activated alumina regeneration waste and electrodialysis waste brine:.
These waste streams will be tre:ate:d in the: Building 374 Process Waste: Tre:atment System. The:
other two inorganic tre:atme:nt syste:ms being considere:d for use (ion e:xchange and reverse
osmosis) also will be: utilizing Building 374 for treatme:nt of waste products. The: disposal
costs of the strong base anion unit as a low-level radioactive waste have not been included.
4.3.6
Reverse Osmosis nnorl~3njc Cont3minant Removal)
4.3.6.1
Description
The: re:ve:rse osmosis (RO) tre:a~me:nt syste:m shown in Figure: 4-6 is similar in concept
to the ion e:xchange: alte:rnative: de:scribe:d in 4.3.4. Ground water is first~tre:ated with a strong
anion exchange: to remove: uranium. The: water is next passe:d through a weak acid c:ltion
exchange unit for the removal of heavy metals, including strontium and manganese. This unit
also re:move:s the TDS associ:lte:d with c:ubonate: hardne:ss with subseque:nt production of
carbonic acid.
The carbonic acid formed is remove:d by decarbonation.
Following
dec:ubonation, the: flow is split betwe:e:n a reverse osmosis tre::ltment unit (for TDS removal)
and an activated alumina unit for se:le:ctive selenium removal.
The reverse: osmosis unit separates dissolved salts from water by filtering water through
a semi-permeable membrane at a pn:ssure greater than the osmotic pressure caused by the
dissolved salts. The operating pressure required can approach 10.000 kN/m2 (1,000 Ib/in2).
The treated water that passes through the membrane is called the permeate: while the reject
sol u tion is called the concen tr:lte. As the permea te is typicall y 10 to 15% of the in f1 uen t,
several membranes must be staged in serie:s for treatment of ,he concentrate to maximize
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
Ilcke\S81 \iap-..c4.jan
JANUARY 1990
-------
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WASTE BRINE
-------
permeate output a-nd minimize concentrate rejected. Concentrate rejected from the RO unit
and wastes from regeneration of the resins will be treated in the Building 374 Process Waste
Treatment System. Rocky Flats' potable water supply will be used to provide the regeneration
,
water for the weak acid cation unit and the activated alumina unit.
4.3.6.2
Effectiveness
Reverse osmosis
treatment technology has been
proven to remove
inorganic
contaminants from ground water to levels that comply with the chemical- specific ARARs.
This technology does have several problems associated with fouling of the filter membrane
which can be mitigated by pretreatment to extend the membrane life.
Pretreatment with a strong acid anion exchange unit is used for selective uranIum
removal. This confines the buildup of radioactivity to this unit, which is advantageous from
:l health and safety and operational viewpoint. The performance of this unit is described more
fully in Section 4.3.4.3. The ground water is then passed through a weak acid cation exchange
unit followed by decarbonation for the removal of iron and manganese. This yields an acidic
feed which reduces the potential for scaling within the reverse osmosis unit. Based on the
influent design criteria indicated in Table 4-1, one vendor of reverse osmosis has indicated
that 12 membranes in series are required to achieve a permeate flow of 75% of the total flow
including recycle.
To lower the capital cost by reducing the reverse osmosis equipment sizes, only one-
third of the total flow need be sent through the reverse osmosis unit to obtain the ARAR for
TDS and metals other than selenium. The other two-thirds of the flow would be fed through
the activated alumina unit for selenium removal. With such a split flow, all of the inorganic
chemical- specific ARARs would be achieved in the final effluent.
Approximately 25% of the influent flow to the reverse osmosis unit will be rejected as
concentrate. This concentrate, as well as the regeneration wastes from the ion exchange units.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT,GOLDEN,COLORADO
ec&c\881 \iap-88C4.jaa
JANUARY 1990
-------
will total approximately 21.000 gallons per week. Since these wastes would be sent to Building
374. only 75% of the influent flow would be returned as treated effluent to the SO,uth
Interceptor Trench (see Section 4.5).
The consumptive use of ground-water potentially
tributary to the South Platte River normally requires an approved augmentation plan from the'
Colorado State Engineer; however, an augmentation plan will not be required for the IRA
because it is a CERCLA action. Nevertheless the 25% return flow deficit will be replaced by
the addition of water from the Rocky Flats Plant potable water supply prior to discharge.
The weak acid cation resin and activated alumina will have to be regenerated using
acid and caustic soda to maintain the tre:ltment efficiency. The use of acids and caustics will
require that operators are a ware of this potential hazard. The operation of the system will be
by personnel that are properly supervised and trained in the system operation and potential
hazards.
Treated water will be monitored to ensure that the removal of inorganic contaminants
is maintained prior to discharge to the environment.
Nearby communities and the environment should realize no safety concerns as this
tn:atment process will effectively remove inorganic contaminants from the ground water. No
short term safety concerns for nearby communities and the environment are anticipated
during implementation of this process.
..U.6.3
Implementability
As with ion exchange, reverse osmosis uni ts are commerciall y a vaila ble and routinel y
used to desalinate water supplies. The unit can be readily purchased and installed.
It is estimated that 60 m:ln-hours per month will be required for operation.
maintenance, and system monitoring. The majority of this time will be required for the
regeneration periods. and for monitoring the reverse osmosis membrane operation.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA.
ROCKY FLATS PLANT, GOLDEN, COLORADO
erMr\881 \iap-MC4.jao
JANUARY 1990
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4.3.6.4
Costs
Estima ted ca pi tal and oper:ltional costs for the reverse osmosis trea tmen t al terna ti ve
are shown in Table 4-7. The capital cost for the reverse osmosis system is $302,500. The.
operational costs include the costs of power. labor, membrane and resin replacement, and the
procurement of hydrochloric acid and sodium hydroxide for regeneration of the cation resin
and activated alumina.
Assuming a 10% interest rate. a 30-year operating life. and no salvage value, the present
worth of the system is $853,500. These costs do not include any capital or operating costs
associated with the treatment and final disposal of the reverse osmosis concentrate and
regeneration wastes. These waste streams will be treated in the Building 374 Process Waste
Treatment System. The other two inorganic treatment systems being considered for use (ion
exchange and electrodialysis) also will be utilizing Building 374 for treatment of waste
products. The disposal costs of the strong base anion unit as a low-level radioactive waste
ha ve not been incl uded..
~.4
COMPARATIVE ANALYSTS OF THE GROUND WATER
TREAT\1ENT TECHNOLOGIES
4.4.1
Orl!3nic Contaminant Treatment Technolol!ies
Based on performance, reliability, implementability, safety, and environmental and
institutional impacts, there is not J substantial difference between the three processes. The
present worth of each of the three alternatives has been estimated assuming a simple interesr
r:lte of 10% over a 30-year period of operation with no salvage value. For activated carbon
adsorption, the presen t worth is $1,20 1,500; for UV jperoxide oxida tion, S 1 .329.500; and for
air stripping with both liquid and vapor phase activated carbon, $960,500. The UV jperoxide
oxidation system is more e:.:pensive than the other two treatment systems.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ec"i\881 \iap-..d.jan
JANUARY 1990
-------
TABLE 4-7
OVERALL COSTS FOR THE REVERSE OSMOSIS
GROUND-WATER TREATMENT UNIT
ITEM
CAPIT AL COST
( Doilarsl
Buildingl
S 162.500
. Treatment Unit & EQuipment
140.000
Operating Costs:
. Acid3
. Caustic4
. Powers
. \1embranes5
. Strong Base Anion Linit Replacement:"
- Operation and :v1aintenance a
ANNU AL COST
IDoll:1rsJ
1.300
300
1.600
1.:00
9.000
~~.OOO
..---------------------------------------------------------------------------------------------------------.---------
TOTAL
S302.500
$ 58..WO
~_.._---------------._-------._----------------------------~=s___m_~==2a
1 Inorganic treatment'system assigned 1/: of building cost
: Based on a flowrate of 30 gpm. 8 hrld
3 1.74 Ib/lOOO gal @ SO.14/lb for 100% HCl
4 0.39 tb/IOOO gal @ SO.l25/lb for 100% NaOH
S 10 HP. g hr/d @ SO.Oi/kWh
,; S6/da v.
1 l/vr .
a 60'hrs/month @ S61/hr.
PRESENT wORTH
Present Worth Factor (PWF) ,. 9.427 (for annual operating costS)
S58.400/ye:u x 9.427 ,.
1989 capital cOSt ,.
S551.000
$302.500
5853.500
INTElUM REMEDIAL ACTION PLAN FOR THE 811 HILLSIDE AREA
ROCKY FLATS PL.\HT, GOLDEN, COLOB..\I)O
".,\811 \iap-MC'.jua
JANUARY l~
-------
Since all three processes will effectively decontaminate the ground-water, the ultimate
destruction of ground-water contaminants has become a factor in the choice of treatment. The
air stripping and activated carbon adsorption systems both use activated carbon, and with
regeneration, the contaminants that have adsorbed onto rhe carbon would eventually be .
destroyed. However, this assumes that the carbon is not radioactively contaminated, thereby
requiring shipment to the Nevada Test Site for disposal. Uranium, either naturally occurring
or resulting from past waste disposal, will likely adsorb to the activated carbon but would pass
through the UV /peroxide system. Although use of an ion exchange unit before activated
carbon treatment would obviate this issue, adsorption of organics on the exchange resin would
reduce resin performance and render this treatment scheme inefficient.
SARA favors
innovative tr:::ltment technologi::s that destroy contaminants, and UV /peroxide meets this
objective. Therefore, the advantage provided by a UV /peroxide system of directly destroying
the volatile organic ground-water contaminants is the deciding factor in selecting
UV /peroxide as the pn:ferred process for ground-water treatment.
4.4.2
Inorg:tnic Cont:tmin:tnt TrC::ltment Alt::rn:Hives
"
Based on eff::ctiveness and cost, ther:: is not a substantial difference betwe::n the thr::e
inorganic treatm::nt processes. All three are capable of meeting the chemical-specific ARARs,
and they compare favorably in terms of operational safety and environmental considerations.
The present worth of each alternative has been estimated assuming a simple interest rate of
10% over a 30-year period of operation with no salvage value. For ion exchange, the present
worth is $862,000; for electrodialysis, $1,007,000; and for reverse osmosis, $1,016.000. The
capital costs of the three alternatives are within roughly 10% of each other and are all
considered competi ti ve.
The electrodialysis and reverse osmosis processes are both membrane processes which
require a high degree of process control for effective operation. The membranes are very
sensitive to fouling, and proper pretreatment is needed to ensure steady performance over
INTERIM R.E.\iEDlAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
,cikC\881 \iap-..c4.jan
JANUARY 1990
-------
time. The ion exchange process utilizes resin beds in place of membranes and is considered
more reliable for long term operation.
All these processes produce wastes which would be treated in the Building 374 Process.
Waste Treatment System. Electrodialysis and ion exchange produce nearly equal volumes of
waste (14,000-15,000 gallons per week). The reverse osmosis system produces roughly 50%
more, or 24.000 gallons per week.
In both the electrodialysis and reverse osmosis alternatives, a portion of the water being
tre:lted is discharged to Building 374 as process waste. This requires that a supplemental water
source is needed to augment the treated effluent prior to discharge in order to ensure complere
recharge. Since this interim remedial action is being executed under CERCLA, it would nor
be necessary to obtain a ground-water augmentation permit. However, Rockwell would be
required to maintain records documenting the augmentation and would have to sample rhe
supplemental water source periodically to ensure compliance with the ARARs. These tasks
represent an institutional requirement and cost (not included here) which ion exchange would
not be subject to. For this reason and reasons discussed above, ion exchange has been selected
as the preferred alternative fOI: the removal of the inorganic contaminants from the ground
water.
~.4.3
Preferred Ground W:Her Trea tment Svstem
As summarized above, the UV jperoxide treatment system has been selected for th:
removal of organic contaminants. and ion exchange for the removal of inorganic contaminants.
In order to maximize the overall system performance, the ground water will be treated as
shown in the flow diagram in Figure 4-7.
As shown in this figure, the ground water will be pumped into two surge tanks. The
surge tanks insure that the treatment system will receive a constant flow of 30 GPM, 8 hours
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLOR.A.DO
erokr\881 \iap-Md.jaa
JANUARY 1990
-------
.:U5!
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AcnVATED
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-------
per day. These tanks also provide approximately two days of collection potential when the
treatment system is not operating.
From the surge tanks, the water is pumped through filters to remove suspended solids.'
The water next is sent to the UV /peroxide unit where the volatile organic contaminants are
destroyed. While iron may be oxidized by the peroxide, the concentrations of ferric iron
formed will not adversely affect performance of the unit. Should the ferric iron precipitate
from solution within the resin bed of the weak acid cation unit, it will be removed during the
.
regeneration cycle with HC!.
Finally, the water is passed through the ion exchange units for the removal of uranium
and inorganic contaminants. With the exception of the uranium removal unit which is not
regenerated, the regenerate wastes from the other ion exchange resins are sent to Building 374
for final tre:ltment. Treated water is pumped to the effluent storage tanks for analysis prior
to discharge. Should the effluent Quality be unacceptable for discharge, the water will be
returned to the influent storage tanks [or further treatment.
~.S
DETAILED EV ALUATTON OF REMEDIAL ACTION ALTERNATIVES
..U.l
Alternative I: Collect Ground Water from Footing Dr:Iin. Source Wel1.and French
Drain. and Disch:uge to the South Intercector Trench DownlH3dient of the 881 Hillside
Ata
~.5.1.1
Descri ption
This alternative involves construction of a french drain (trench) at the location shown
on Figure 4-8. The drain is locate downgradient of the 881 HiUside SWMUs and monitoring
wells 2-87 and 48-87, and upgradient of the South Interceptor Ditch.
This location is
downgradient of VOC contaminated alluvial ground water. The french drain will extend
along the entire length of the saturated alluvium. The drain will be keyed at least two feet
. into bedrock of a hydraulic conductivity of 1 X 10-6 centimeters/second (em/see) in order to
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN. COLORADO
ecokc\881 \iap-MC..jan
JANUARY 1990
-------
~
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EXPLANATION
SOUD WASTE MANAG'
@ UNnS
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--------
SUMPS (Iocat~on to
finalized dUring
detail design)
. RECOVERY WELL
9-74
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FIGURE 4-8
ALTERNATIVE 1:
FRENCH 0 - --- I COLLECT
-------
fully penetrate the soils. and will be approximately 2.100 feet long. As such. the drain will
intercept and contain all alluvial ground-water flowing from the area. A PVC drainage pipe
will direct flow under gravity to two 3-foot diameter concrete collection sumps. Each sump
will be equipped with a submersible sump pump to deliver water from the drain to the new'
treatment plant (see Section 4.4). Each of the two pumps will have sufficient capacity to
deliver the entire discharge of the drain to the treatment plant. The downgradient face and
bottom of the french drain and drain sump will be covered with a synthetic membrane to limit
flow from the clean side of the trench (Figure 4-9). The upgradient face of the french drain
.
will be covered with a geotextile filter fabric to minimize the intrusion of soils into the drain
rock. The fabric will be of a size that prevents clogging. The inclusion of the downstream
synthetic membrane coupled with the continuity of the drain is expected to provide positive
cutoff of the ground water. Water collected from a source well at SWMU 119.1 (a new well
near well 9-74) will also be treated in the new treatment plant. In addition, a sump will be
built to collect the flow from the Building 881 footing drain. Two sump pumps will be used
[0 transfer the footing drain flow to the treatment plant in a separate piping system. Effluent
from the treatment plant will be discharged to the South Interceptor Trench which flows into
Pond C-2. Pond C-2 discharges to Woman Creek under provision of RFP's NPDES Permit.
Flow from the trench could be on the order of 10 gpm initially, but is expected to drop
[0 less than 5 gpm within a few days. The combined steady state flow from the trench and
source well is estimated to be as low as 2 gpm. Flow from the Building 881 footing drain is
expected to be 5 gpm or less.
4.5.1.1
Eff ecti veness
The proposed interim action will collect ground water from the soils on the 881 Hillside
Area in a french drain with a downstream impermeable membrane. The french drain that will
be constructed Figure 4-8 on the 881 Hillside is intended to collect ground water containing
volatile organics from the colluvium/alluvium system. The drain will be keyed two feet into
bedrock of a hydraulic conductivity of 1 x 10-6 centimeters/second (cm/s) to fully penetrate
INTERIM REMEDIAL ACTION PLAN FOR. THE 881 HILLSIDE AREA
R.OCKY FLATS PLANT, GOLDEN. COLORADO
-C"I\881 \iap-Iec4.jM
JANUARY 1990
-------
2' MIN. OF
COMPACTED CLAYEY
OR SIL1Y SOIL "\
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-------
the colluvium so that ground water will not flow under the drain in the colluvium. The
bedrock has a hydraulic conductivity more than two orders of magnitude smaller than the
colluvium. Therefore, the drain will be effective in collecting colluvial ground water.
The penetration into bedrock is not intended to reduce the migration of contaminants
into bedrock. However, the installation and operation of the drain will have two beneficial
impacts on the bedrock ground-water flow system. First, the drain will slightly decrease the
rate of downward movement of colluvial ground water because the potentiometric surface in
...
the colluvium will gradually be lowered and, as a consequence, the gradient between the
colluvium and the bedrock will be slightly less.
Second, the drain will remove the
contaminated colluvial/alluvial ground water that is a potential source for contamination of
bedrock ground water. The interim action is intended to remove volatile organics form the
colluvial/alluvial ground-water and is anticipated that the french drain will be effective in
both collecting the colluvial/alluvial ground water and limiting releases from the 881 Hillside
Area.
The proposed treatment system will remove both the organic and inorganic ground-
water contaminants to below the chemical-specific ARARs given in Section 3.3.1. A complete
analysis of chemical-specific ARARs pertinent to subsurface discharge is presented in Section
3.3. Location-specific ARARs are discussed in Section 3.3.2.
The interim action at the 881 Hillside Area is expected to have minimal impacts on
Woman Creek. Although the french drain is expected to intercept all of the colluvial flow
from the hillside area, the water will be returned co the hillside by means of surface discharge
(after treatment) to the South Interceptor Ditch. The point of discharge will be at the west
end of the hillside area (upstream) and the discharged water will flow along the ditch to Pond
C-2. This should maintain the artificial wetland that exists in the South Interceptor Ditch.
The treated water is expected to return to the ground-water system by infiltration from the
South Interceptor Ditch and Pond C-2.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
8(ckr\881 \iap-..d.jaa
JANUARY 1990
-------
Losses from the ground-water system resulting from the interim action arc expected to
be as follows:
.
It is possible that a certain diminution of flow in the creek will occur directly
downhill of the area because not all of the discharge will infiltrate from the
South Interceptor Ditch. However, this possible qiminution is expected to be.
negligible because the hillside area only amounts to about 10 percent of the
recharge area to the creek (total length of both banks is approximately 20,000
feet from the hillside to the headwaters of the creek, while the cut-off length
at the hillside is approximately 2,000 feet). In any event, the creek will be
nearly fully recharged by infiltration from Pond C-2.
Some evapor:1tion will occur from both the South Interceptor Ditch and Pond
C-2.
The impacts of the losses are expected to be negligible because the total flow currently
recharging the ground-water system of the Woman Creek Valley Fill Alluvium is a small
proportion of the total flow and most of the intercepted ground water will return to the system
in any event. The losses are expected to have no noticeable impact on the availability of
ground water off-site because the vast majority of the ground water in the Alluvium is
:urrently consumed by evapotranspiration within the plant boundary.
Worker safety precaution will be required during construction of this alternative
because of the potential for encountering contaminated soil or water in the excavation.
However, at the location of the drain it is expected that contamination in both soil and wa ter
will not be detected. The safety of nearby communities should not be adversely affected and
che risk of harm .to the environment should not be increased from the construction or
operation of this remedial action alternative. Treated water will be monitored to ensure
;:ontaminants arc within regulatory guidelines prior to discharge.
4.5.1.3
Implementability
French drains have been used successfully for many years for control of ground water.
French drains arc almost always effective, except when ground water can flow over,. under
or around the drain, or when the dr:iin becomes clogged. The drain. proposed for the 881
Hillside will fully penetrate the colluvium and be keyed into claystone bedrock. preclu.ding
INTERIM REMEDIAl. ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
.''''1\881 \iap-Mc4.jan
JANUARY 1990
-------
the possibility of flow under or over the drain. It extends uphill on the west side to an
elevation equal to that of SWMU 107 and is keyed into a dry ridge on the east end. This
should preclude flow around the drain. Clogging is not expected to be a problem based on past
experience of the footing drain at Building 881, which has been in service since the early.
1950's without clogging. Replacement of the pumps in the sumps should be expected as part
of routine operation.
Operation and maintenance requirements are small for a french drain. Flow to the
sump is by gravity. Liquid level controllers switch on a submersible pump in the central sump
whenever there is sufficient water present. A high level alarm will provide an indication of
pump failure although inspection of the french drain and pumping records on a weel(ly basis
will ensure that the collection system is functioning. Any necessary repairs will be undertaken
immediately. In addition, pairs of ground-water monitoring wells will be installed along the
trench upgradient and downgradient at locations where the colluvium is found to be saturated
or where subcropping sandstones are encountered (based on trench excavation) to monitor [he
effectiveness of the french drain in ,intercepting contaminated ground-water. Changes in
ground-water quality upgradient and down gradient of the french drain will also be monitored
by existing ground-water monitoring wells.
A large diameter withdrawal well will provide efficient dewatering of the alluvium
In the vicinity of well 9-74 and reduce pump cycling.
The well will be surrounded by
monitoring wells so th:lt an evaluation of the efficiency of the well can be easily made. It
appears likely that pumping of this well will be continuous for the first several years of
remediation, but may not be required later. This is due to the small amount of ground water
in the vicinity of SWMU 119.1. In contrast~ the footing drain at SWMU 107 has already been
functioning satisfactorily for thirty years and there is no reason to believe that this will
change. Collection of the footing drain flow will likely be required for the full thirty years
if the source of the contaminants cannot be identified and removed. A source characterization
study is currently in progress as part of the final RFI/RI and CMS/FS investigation process.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
el~I\881 \iap-HC..jan
JANUARY 1990
-------
Operation and maintenance requirements for collection of the footing drain flow are
minimal. Discharge from the drain will be pumped to the treatment plant based on liquid
level switches. Two pumps will be provided to protect against pump failur~. Operation and
maintenance of the dewatering well are similar. It too will be operated with a liquid level,
controller and requires little more than routine inspection. The system is highly implementable
because the withdrawal well and associated pumps and mechanical connections are standard
items.
Action-specific ARARs relating to soil excavation which may be pertinent to this
alternative include the requirements under RCRA that address the storage of RCRA wastes
in waste piles. and restrictions on the land disposal of solvent-containing wastes that exceed
.trI:atment-based standards for those constituents. Soils removed during excavation of the
french drain are down gradient of all 881 Hillside Area SWMUs and are not expected to
contain hazardous constituents. Also, influent and effluent piping is aligned to be outside all
SWMUs. As discussed in Section 6. soil sampling and analysis will be conducted to determine
if the exca va ted soils must be handled. as a RCRA hazardous waste. Of particular relevance
to the handling and storage of contaminated soil is the requirement, under RCRA, of diverting
run-on away from waste piles, preventing wind dispersal of wastes, and collecting free liquids
or leachate for treatment as a hazardous waste.
RCRA requirements for the storage of
contaminated soil in containers (roll-off boxes or drums) would also be relevant and
appropriate if containers are used for storage. With respect to RCRA restrictions on the land
disposal of salven t-containing wastes, after November 8, 1990 con taminated soils ma y not be
disposed off-sire in a RCRA landfill unless they have been analyzed and found to contain
levels of contamination below Best Demonstrated A vailable Technology (BDA T) for those
contaminants, or .treated to BDA T standards. Soils contaminated above the BDA T levels C:1n
only be .stored in containers and tanks for a period not to exceed one year.
O'nly non-
contaminated soils will be used as backfill material for the trenches.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FI.ATS PLANT, GOLDEN, COLORADO
er.kr\881 \iap-8ect.jan
JANUARY 1990
-------
Action-specific ARARs pertinent to surface discharge are the relevant and appropriate
requirements under RCRA for the storage and treatment of hazardous waste in containers and
tanks prior to surface discharge.
The design, operation, and maintenance of the treatment plant will meet chemical-
specific ARARs identified for the contaminants of concern and action-specific ARARs related
to the subsurface discharge of the tre:ltment system effluent. A complete ARARs analysis for
trea tmen t opera tions is given in Ta ble 3-3.
Highlights of these action-specific ARARs are listed below:
Applicable federaUy approved state water quality standards must be complied
with for discharges to surface or ground waters of the state. These standards
may be in addition to or more stringent than other federal standards under the
Clean Water Act.
General requirements for treatment and storage of RCRA hazardous waste in
containers and tanks are relevant and appropri:lte. Recordkeeping requirements
under these sections are not ARARs.
Implement:ltion of this alternative involves only routine construction procedures.
Construction of the drain can be completed in a period of approximately three months.
Ground water will be effectively contained at the beginning of construction when the
excavation is dewatered. The system will be operational immediately upon completion.
4.5.2
Alternative~: Total Encaosul:1tion
4.5.2.1
Description
This alternative involves total encapsulation of the contaminant sources near SWMU
107 and within SWMU 119.1 using RCRA caps and slurry waUs at the locations shawn on
Figure 4-10. Each area will be covered with a three- layer cap consisting of six-inches of
vegetated topsoil, a minimum of six inches of drain rock, and a composite synthetic the cover
membrane/compacted soil cover of at least two-foot thickness (Figure 4-11). The surface of.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
81&,\881' ia\)-MC..ja.n
JANUARY 1990
-------
'. J"""-
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EXPLANATION
'~m_:.', SOUD WAS' f Ml\NAGI
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FIGURE 4-10
ALTERNATIVE 2:
-------
~EJ.t8RANE LOCKING TRENCH
0' (~IN.) DRAIN ROCK (CW)
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FIGURE 4-11
TOTAL ENCAPSULATION
SECTION
NOT TO SC.AlE
INTERIM REMKDIAI. ACTION PLAN FOR 'mE all HILLSIDE AlU!:A
ROCKY FLATS PLANT. GOLDEN. COLORADO
'-!:I:'\ ~81\bt)-'ec4.;3n
RJ7012.PJ~1 leg
JANUARY 15*
-------
will be sloped at a minimum of 2% to drain toward peripheral ditches. The peripheral ditches
will discharge to the South Interceptor Trench. The cover at SWMU 107 is estimated to consist
of approximately 6,000 square feet; the cover at SWMU 119.1, approximately 80,000 square
feet. The covers will extend a minimum of five feet beyond the slurry walls.
Peripheral containment will be achieved by construction of soil-bentonite slurry walls
to completely encircle ,the contaminated soils. The walls will be keyed at least two feet into
claystone bedrock of a hydraulic conductivity of 1 x 10-6 cm/s. The SWMU 107 slurry wall
is estimated to be approximately 320 feet long and depths are anticipated to range from about
~ to 17 feet. It is estimated that the SWMU 119.1 wall will not exceed about 20 feet in depth
(15 feet average) and th:u it will be approximately 1,000 feet long. In addition, ground water
inside the containment systems will be removed using internal sumps. This will result in '
hydraulic gradients toward the encapsulated soil and will reduce the potential for any
releases. The small volume of water produced from the sumps will be stored in tanks on site
and be transferred to a suitable treatment facility. No capital or operating costs for this
treatment have been included.
The cap and perimeter ditches will be inspected on a semi-annual basis and repaired
as necessary. The ditches will be maintained in clean and properly graded condition so that
collected runoff is rapidly removed from the area.
4.5.2.2
Efr ecti veness
This alternative will adequately contain and immobilize the sources of contamination.
As discussed in Section 2, ground water contamination is known to exist downgradient of
SWMU 119.1 and may exist downgradient of SWMU 107. These waters will be released to the
environment. This is expected to nominally impact the quality of the ground water within the
Valley Fill Alluvium. Therefore, this alternative minimizes future contaminant migration
from the sources and thus minimizes future public exposure to contaminants off-site while
the Final RFI/RI and CMS/FS activities are completed.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
8,&,\881 \iap-HC4.jan
JANUARY 1990
-------
Partial control of the SWMUs will be achieved as soon as the peripheral containment
structures are constructed. Full control will not be achieved until the entire system is complete
and pumping of the sumps begins.
Worker safety precaution will be required during construction of this alternative and
during monitoring and dewatering operations. In addition, safety precautions will be required
during excavation for and construction of the compacted soil barrier walls. The safety of
nearby communities should not be adversely affected and the risk of harm to the environment
should not be increased during construction or operation of this alternative.
~.5.2.3
Implementa bility
Infiltration and ground-water flow through the SWMUs is expected to be practically
eliminated by the total encapsulation system. As a consequence, the release of contaminants
from the SWMUs is also expected to be eliminated. It is noted that the system will not be as
effective if the SWMU areas are not underlain by continuous claystone.
The useful life of the total encapsulation system is expected to exceed thirty years. The
;:ontainment features involving geologic materials (slurry wall and compacted soil cover)
should function indefinitely, particularly given that flow through them will be from the non.
contaminated to the contaminated side. The synthetic membrane can be expected to function
adequately for at least twenty years, and it is backed-up by the compacted soil layer. The
vegetated cover and peripheral ditches will require regular maintenance. and the internal sump
will require regular operation.
The technologies proposed in this alternative :ue all proven technologies. The multi-
layer cap system has been used for nearly ten years with good success at many sites. Soil-
bentonite slurry walls have also been used for many years to effectively control ground-water
flow.
The gradient control provided by the sump is a modification of the standard
encapsulation system and should provide an extra level of protection.
INTERIM REMEDIAL AC'I'ION PLAN FOR THE 881 HILLSIDE AREA
R.OCKY FLATS PLANT, GOLDEN. COLORADO
11.1&1\881 \iap-.ec4.jan
JANUARY 1990
-------
Operation and maintenance requirements are very small for the total encapsulation
alternative. There are essentially no operational requirements, with the exception of routine
pumpage of the sump. This is expected to be required no more frequently than annually after
[he initial dewatering. Maintenance will involve inspection and cleaning of peripheral ditches,
inspection and repair of the vegetated cover, and inspection and replacement of the sump
pump; In addition, ground-water and surface water conditions in the vicinity of the 881
Hillside Area will be monitored.
This alternative can be implemented using standard construction practices. Seaming
of synthetic membranes has become common enough that a qualified local contractor can be
used. Construction of the encapsulation systems will require about three months.
Construction of a slurry wall at SWMU 119.1 may prove impractical where the wall runs
parallel [0 [he grade (slope may be [00 steep). For the two legs of the wall running up the hill,
i[ is recommended that a compacted soil cutoff wall be constructed in an excavated trench.
The trench will probably vary from 3:bout 15 feet deep :It the downhill end to about 2 feet
deep at the uphill end. The trench can be excavated with standard e:lrth-moving equipment.
Some of the excavated material may be suitable for use in constructing the wall. The length
of compacted wall is estimated to be 600 feet, while the remaining slurry portion is about 400
feet long. A compacted soil wall is expected to provide performance characteristics equivalent
[0 a sl urry wall.
MateriJI for construction of the compacted soil cover and wall can be obtained from
the ArJpahoe Formation. The Arapahoe is covered by a thin veneer of colluvium along
Woman Creek and could be excavated from a number of nearby areas; however, in order to
a void oversteepening the slopes, the borrow area should be established on the south side of
Woman Creek.
ARARs pertinent to the total encapsulation alternative include
the relevant and
appropriate requirements under RCRA that address the technical specifications of capping
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
erkr\881 \iap-..d.jan
JANUARY 1990
-------
closure and post-closure care. In addition, soil that is excavated must be handled as a
hazardous waste until sampling and analysis are performed (see Section 4.5.1.3).
Wastewater that is recovered from the source well within the encapsulated area must.
be treated in a facility operating in compliance with the substantive requirements of RCRA.
If recovered ground-water is to be treated on site in a treatment facility, specific RCRA
requirements for the treatment of.
hazardous waste are relevant and appropriate.
If
wastewater is transported off site, both the substantive and administrative requirements of
RCRA will apply to the wastewater management. A complete analysis of chemical-, location-
and action-specific ARARs is presented in Section 3.3.
~.5.3
Alternativ~ 3: Collect Ground Watc:r from Source Well and Footinsz Drain. and
Discharg~ to th~ South Int~rc~otor Trc:nch
4.5.3.1
Description
This alternative involves pumping:1 new source well (located near 9-74) at SWMU 119.1
Jnd collection of the footing drain discharge in a new sump near SWMU 107 (Figure 4-12).
The collected water will be treated in the new treatment plant (see Section 4.4) and discharged
to the South Interceptor Trench which flows into Pond C-2. Pond C-2 discharges to Woman
Creek under provisions of a NPDES Permit.
It is estimated that flow from a completely dewatered 9-74 will initially be about I gpm
but will rapidly fall to a steady flow of about 0.04 gpm. It is anticipated that the flow from
the drain will be five gpm or less.
4.5.3.2
Effectiveness
Removal of the majority of contamination in the vicinity of we119-74 will significantly
minimize off-site migration of contaminants. Future off-site public exposure to the
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ecckc\881 \iap-MC".jau
JANUARY 1990
-------
--H 74UOO
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SCA!.£: ,. =300'
EXPLANATION
@
saUD WAST[ MANAG
Utms
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SUMPS (Iocotion to
finolized during
detail design)
HE COVmy WE I L
.
9.74
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./ .J...
FIGURE 4-12
ALTERNATIVE 3:
FOUNDATION DRAIN &. "'ELL 9-74
-------
contaminants is unlikely. However, the migration of contaminated alluvial ground water
beyond the 881 Hillside Area is more probable than that expected for Alternative 1 which
utilizes a french drain for ground water collection.
The proposed treatment system will remove both the organic and inorganic ground-
water contaminants to below the chemical-specific ARARs given in Section 3.3.1. A complete
analysis of chemical-specific ARARs pertinent to surface discharge is presented in Section
3.3. Location-specific ARARs are discussed in Section 3.3.2.
The safety of nearby communities should not be adversely affected and the risk of
harm to the environment should not be increased from the construction or operation of this
interim action alternative. Treated water will be monitored to ensure contaminants are within
regulatory guidelines prior to discharge.
..U.3.3
Implementa bili ty
The useful life of this alternative is expected to exceed thirty years. A large diameter
withdrawal well will provide efficient dewatering of the alluvium in the vicinity of well 9-i4.
The well will be surrounded by monitoring wells so that an evaluation of the efficiency of the
well can be easily made. It appears likely that pumping of this withdrawal well will be
continuous for the first several years of remediation. but may not be required later. This is
due to the small amount of ground water in the vicinity of SWMU 119.1.
The footing drain at SWMU 107 has already been functioning satisfactorily for thirry
years and there is no reason to believe that this will change. Collection of the footing drain
flow will likely be required for the full thirty years if the source of the contaminants cannot
be identified and removed.
Operation and maintenance requirements for collection of the footing drain flow arc
minimal. Discharge from the drain will be pumped to the treatment plant based on liquid
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
ecokc\881 \iap-..d.jaa
JANUARY 1990
-------
level controls. Two pumps will be provided to protect against pump failure. Operation and
maintenance of the dewatering well are similar. It too will be operated with a liquid level
controller and reQuiresli_ttle more than routine inspection: The system is highly implementable
because the withdrawal well and associated pumps and mechanical connections are standard,
items.
The design, operation, and maintenance of the treatment plant will meet chemical-
specific ARARs identified for the contaminants of concern and action-specific ARARs related
to the surface discharge of the treatment system effluent. A complete ARARs analysis for
tre:ltment operations is given in Table 3-3.
Highlights of these action-specific ARARs are listed below.
General requirements for tre:ltment and storage of RCRA hazardous waste in
containers and tanks are relevant and appropriate. Recordkeeping requirements
under these sections are not ARARs.
Applicable federally approved state water Quality standards must be complied
with for discharges to suriac: or ground water of the st:lte. These standards
may be in addition to or more stringent than other Federal Standards under the
Clean Wa ter Act.'
Implement:ltion of this alternative involves only routine construction procedures. The
system will be operational immediately upon completion.
~.6
ESTIMATED COSTS FOR At TER~ATTVES
Cost estimates wer: prepared using in-house computer software and unit rates. In-
house unit rates are based upon Rocky Flats Plant experience in planning and managing
similar construction projects at this site. Other recognized references were used where site
specific unit rates were unavailable and for comparison or checking. These documents include:
"Compendium of Remedial Technologies at Hazardous Waste Sites," U.S. EPA, September 1985:
"Treatability Manual, Volume IV. Cost Estimating", U.S. EPA, April 1983; and "Building
Construction Data," R.S. Means Co., Inc., 1987.
INTERlM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
e(okc\881 \iap.a.d.jan
JANUARY 1990
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Costs are reported in 1989 dollars for both initial and future costs. Future costs include
replacement of capital cost items (e.g., monitor wells or non-expendable items) and cyclic costs,
such as operation and maintenance (O&M) costs, energy costs, and expendable supplies. Life
cycle costs for each alternative have been presented, in 1989 dollars, as present worth coSts'
assuming a discount rate of 10%, a duration of active remedy of thirty years, and no salvage
value for purchased equipment.
Costs were analyzed by first identifying capital items common to one or more remedial
alternatives. These capital items and associated costs are presented for each alternative in
T:1ble 4-8. Similarly, identified cyclic COSts for each alternative are presented in Table 4-9.
Present worth analyses are performed by using the total costs presented in Tables 4-8
:1nd 4-9, and assuming the duration of the remedy is thirty years.
Year "0" begins upon
initiation of design and construction activities, and system operations will continue through
[he end of year 30. A thirty-year period was selected as the expected duration of the IRA for
use in cost analyses for two principal reasons; 40 CFR 264.117 requires a minimum of 30 ye:lrS
post-closure monitoring, and beyond 30 years present value costs are less than 6% of [heir
future worth and thus become insignificant with respect to these analyses. These schedule
:1ssumptions are made to facilitate comparisons between alternatives and do not supersede any
existing schedules cre:lted as a result of any administrative rule, statute. or agreement with
:1gencies authorized to regula te remedial acti v i ties a t this si te. The presen t worth anal ysis (i n
1989 dollars) is presen ted for each al terna ti ve in Ta ble 4-10.
Rigorous sensitivity analyses demonstrating the effect of possible variations or
. inaccuracies in assumptions or estimates have not been performed. Only one parameter. the
duration of active remedial measures, was identified as being significant with respect to
sensitivity analyses. However, uncertainties in the rates of reclamation of the alternatives
prevents performance of more rigorous analyses.
INTERIM R.E.'dEDlAL ACTION PUN FOR THE 881 HILLSIDE AREA
ROCKY FLA':'S PLANT, GOLDEN, COLORADO
eg&I\881 \iap-I8C..jan
JANUARY 1990
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TABLE 4-8
CAPIT AL COST COMPONENT WORKSHEET
Component Description
-----------Al tern3 ti ve N umber---------- .
I 2 3
---------------------------------------------------------------------------------------------------------------------
Ground Water Collection
Foundation Drain Sump with Pump 17.800 17.800
Withdrawal Well 5.800 5.800 5.800
:.100 If French Drain with Sumps 364, I 00
:.500 If Influent/Effluent
Piping and Manholes 50.000 50,000
Influentl Effluent Tanks I 158,000 175.000
Ground Water Tre:ltment
Building 3:5.000 3:5.000
Treatment Cnits 3~5.000 3~5.000
Parking Pad ~,300 ~.300
Electrical 117.100 117.100
~eCh3nic:lI 1 :1.600 1::.600
I nstrumen ta tion ~0.500 ~0.500
Ground \Vater Iso13tion
36.000 sf RCRA Cap 167.500
19.800 sf Slurry Wall 138.600
7.500 &31. Tank Wagon 32.000
Subtotal: 1..nO.:Oo 343.900 1.106.100
Design :It 15% ::0.500 51.600 ! 65.900
ConstructIon ~1::1nagem::nt :It 5% ':"3.500 17.:00 55.300
Contingency at :0% :94.000 63.000 :: 1.:00
TOTAL CAPITAL COST: 52.155.100 5481.500 51.645.500
INTERIM REMEDIAL ACTION PLAN FOR THE 811 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN, COLOR.ADO
.c"'r\811 \iap-MC4.jan
JANUARY 199()
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T ABLE~-9
ANNUAL COST COMPONENT wORKSHEET
(DOLLARS PER YEAR)
Componl:nt Dl:scriPtion
----------A 1 tl:rn:1 ti VI: N u m bl:r----------
123
---------------------------------------------------------------------------------------------------------------------
Ground Watl:r Colll:ction
I Found:1tion Drain Sump with
1 Wdl Pump
: Frl:nch Drain Sump Pumps
! 7,500 Gallon Tank Wagon
Pump
Grouna \\'at:r Tre:ltml:r1[l
Ch:mic:lls. R:ol:lc::n:nt PHtS
Power
Oper:ltion :lnd Maint:n:lnc::
~1oni tori n g:!
Subtot:ll:
Contingl:ncy Jt :J%
TOTAL ANNUAL COST:
1 BJs:d on J slow r:lt: 01 30 gpm. 3 hr.-cay
: : 16 nrs:month @ S61.:hr
:: .; sJr:'Icies: month @: S 1.500/s:lmpl:
INTERIM REMEDIAL ACTION PLAN 'OR THE 881 HILLsIDE AREA
ROCKY rLATS PLANT. COLDEN. COLOR..\A)O
81"1\811 \iap.._..jaa
:00 :00
:00 :00 :00
~OO
:.500
19.100 ! 9.100
38.600 38.600
84.600 84,600
71.000 7:.000
:15.100 :14,700
43.000 ~3.000
S258.100 S2.700 S257.700
JANUARY 199o
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TABLE ~-lO
SUMMAR Y OF AL TERN A TIVE COSTS
Component Description
~--------_..~ 1 te rn:1 ti v e N u m ber-.-..-..---.-.---.---
1 ., -
- J
--------------.-.----------------------------------------------------------------------------------------------------
Annu:1! Costs S 258.100 $ :.700 S :57.700
Annu:l! Cost x PWF- 2.433.000 :6.000 :.'::9.000
CJDlt:l! Cost :.155.:00 ':81.500 1.645.500
Present Worth
$4.588.:00
5507.500
S~.07 ~.500
. Present Worth F:lc:or ::II 9.4:7 (for JnnU:l! oper:!tlng COStS)
INTERIM REMEDIAL ACTION PLAN roa THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN. COLORADO
.c~r'881 \iap._..jan
JANUARY 199o
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A discussion of benefits of individual alternatives is presented in Section S. Summary
of Alterna ti vc:s.
INTERIM REMEDIAL AC'1'ION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
'(&r\881 \iap-Md.jau
JANUARY 1990
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I
SECTION 5.0
COMP ARA TIVE ANALYSIS
5.1
INTRODUCTION
This section summarizes the three screened alternatives and presentS a tabular
comparison of them (Table 5-1). A recommendation is made for appropriate removal action
"
usin g the compara ti ve anal ysis.
5.2
COMPARISON OF At TERNATTVES
The following al terna ti ves were retained in the screening process and eval ua ted in
detail in Section 4.
I.
Collection of ground water using a french drain and a -source well, collection
of footing drain flow from SWMU 107, treatment of collected water in a new
treatment plant and discharge of the tre:ued water to the South Interceptor
Trench down gradient of the 881 Hillside.
2.
Total encapsulation of source areas using a multi-layer cap and slurry well with
control of gradients by pumping an internal sump (dewatering fluids to be
tre:ued :It an existing treatment plant).
Collection of ground water using a source well, collection of footing drain fJow
from SWMU J07, treatment of colJected water at a new tre:ltment pJant, and
discharge of the tre:lted water to the South Interceptor Trench down gradient of
the 88 J HiIJside.
3.
AJ tern a ti ve I is the most ex tensi ve in teri m action considered and w ilJ resu I tin
effective collection of the contaminated 88J HiIJside Area ground water. The french drain
wilJ significantly reduce contaminant rc:!eases to the alluvial ground water downgradient 01
the 88 J HiIJside Area. ColJection of the Building 881 footing drain flow and pumping of a
new well at SWMU 119.1 wilJ result in collection of any contaminated water from these areas.
The ground-water treatment system will effectively remove both the organic and inorganic
contaminants in the ground water to below the chemical-specific ARARs. Discharge of the
treated water into the South Interceptor Trench allows for the water to be combined with Pond
C-2 water before final discharge off-site in accordance with Rocky Flats Plant NPDES Permit.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
e(ok(\881 \iap-MC5.jan
JANUARY 1990
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~ ;da
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Alternatives &
pruent ~orth
I.
freoch Drain,
Source ~ell, aId
footing Drain with
GrolM'd"water
, reatment
5~,588,200
2.
'otal
Encapsul at ion
5501,500
].
Source ~ell
& footing
Drain with
GrolM'd-water
Ireatment
5~,Oll,,500
JIII'I ClOcnt obit i tv
'he alternative relys on proven
technoloilles for col tect ion ord
treatment of ilround water. 'here
are no lite corditions that rerder
cons truc t Ion di If I cui t.
'he encBpsulation Iystem uses
proven technology and Is ea-
pecteJ to per'ora wcll.
Rout ine maintenilnce 0' the
cover old ditches, and lon~-tera
security BOO IOOnitoring are
required.
the alternative relys on proven
technologies for grQUld water
treatment. Site earthwork is
not requi rc(j.
lADlE 5-1
SUHHAAY Of ALIERNA'IVES
U'ect iveness
COO1l1Cnt5
'he 'rench drain will provide
positive collection 0'
contaminated alluvial
ground-water 'low 'r~ the Hill-
side and wit I there'ore slgnficantly
redlCe cootaminant releases to
dow\lgradlcnt alluvial grounJ watel .
COIiFI i es with act ion and locot Ion speel flc
ARARs, and ~etl or exceeds ch~ica' speci'ic
AAAAs 'or contaalnants.
Encapsul at ion wit I .initai Ie
'uture contoainant releases
Irexa the SLHJs. A lmall quantity 01
contaminlited ground water
witt be allowed to Itow toward
~omlin CreeL 'he inFact to downgr adl ent
alluvial water il eapected to be nominal
C~liei with action and location lpeclflc
'AAAs, and ~etl ch~lcal lpeclflc 'I'R' with
the eaception of water I~~dlately dowograd.
ient 01 SUHU 119.1 that will be released.
Does not meet che..lc.1 speci'ic
'A'Rs for organic cont~inants but
will slgni'icantly .inlmlze future
halards to the public health.
Pumping 0' a well .t SLHJ 119.1 aid
collection 0' footing drain flow,
'ollowed by treatllent 01 thc col,
lected wliter, will result in in"~-
diate iqJrovelOent 0' ground-water
qllatity conditions at SUHlI 119.1 dlI
-------
Total encapsulation (Alternative 2) will not destroy the contaminants present, but will
contain them in place. It will significantly reduce future contaminant releases from the
encapsulated SWMUs. However, a small Quantity of ground water with concentrations of
VOCs less than 150 ugll will be released. The portion of this water that is not consumed by'
evapotranspiration will ultimately reach the Woman Creek Valley Fill Alluvium and flow east
toward the property boundary. It is unlikely that volatile organics will ever be detected at the
boundary from this release. This alternative uses proven technology intended for much higher
contamination levels than are present on the 881 Hillside. However, public reception of this
may be unfa vorable due to the contaminant releases to the Valley Fill Alluvium.
Collection of the footing drain flow and pumping of a new well at SWMU 119.1 with
treatment of collected water (Alternative 3) is a limited-scope response that should make a
significant impact on releases from the two SWMUs.
However, this alternative is not as
effective as Alternative I in capturing contaminated ground water.
Although volatiles
';urrently are not detectable in the surface waters receiving flow from the footing drain.
collection and treatment of the footing drain flow will provide an extra level of assurance that
significant releases will not occur in the future. Pumping the well completed in the center of
SWMU 119.1 will clearly improve conditions by removing the most contaminated ground water.
Continued pumping may result in complete dewatering of the colluvial materials beneath the
SWMU because of limited recharge to the area. As with Alternative I, the ground-wa ter
treatment system will effectively remove both the organic and inorganic contaminants to
below the chemical-specific ARARs.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
er&lr\881 \iap-.ec5.jan
JANUARY 1990
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SECTION 6.0
PROPOSED 1M/IRA
6.1
SUMMARY
Alternative 1 has been chosen as the proposed interim remedial action. This alternative
involves construction of a french drain (trench) to intercept contaminated alluvial/colluvial
ground water from the 881 Hillside Area. The drain will be located downgradient of the 881
Hillside SWMUs. will be keyed into bedrock in order to fully penetrate the soils. and will be
1.1 00 feet long.
The bedrock lithology and hydraulic conductivity will be verified before construction
of the french drain begins. This verification program will consist of drilling the drain
alignment on lOa-foot centers (22 holes along the approximately 2.100 foot long drain). This
boring program will be extended to include SWMU 119.2 to confirm the absence of a satur:lted
colluvial zone.
If saturated colluvial material is encountered. the french drain will be
extended to collect ground water from the SWMU 119.2 area.
The holes will be drilled using hollow stem augers to the top of bedrock. Discrete
samples will be collected every two feet for VQC analysis. and four foot composite samples
will be collected for analysis of metals. inorganics and radionuclides. The proposed french
drain alignment will be re-evaluated if VOCs are detected in the samples. This information
will also be used to determine the final disposition of soils excavated during french drain
construction. Boreholes on lOa-foot centers will also be drilled along the influent and effluent
piping alignment. Boreholes will be drilled to the proposed piping depth. and soils will be
sampled and analyzed as above to determine the final disposition of this excavated soil.
In order to confirm the hydraulic conductivity of the bedrock material and to
determine the presence of sandstone units which could adversely affect the performance of
the french drain. the bedrock will be cored, using the augers as a surface casing. Penetration
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKYFLATSPLANT,GOLDEN,COLORADO
'c~r\881 \iap-MC6.jan
JANUARY 1990
-------
of the bedrock will be sufficient (1 S feet) to find sandstone units that might subcrop between
borings on lOa-foot centers. This is based on the 7 degree estimated dip of the sandstone lenses
(Rockwell International, 1988a). The hydraulic conductivity of the bedrock will be verified
by injection tests on five foot intervals using a single packer injection apparatus as the cored'
hole ad vances.
Data collected in this program will be used to develop the detailed design of the drain.
Required penetration into bedrock, and trench alignment, bottom slopes, and sump locations
will be selected based on the results of volatile organic analysis, the depth to bedrock and the
hydraulic conductivity of the bedrock materials. The drain will penetrate a minimum of two
feet into bedrock with a hydraulic conductivity of IxIO-6 centimeters per second (cm/s) or
lower. The penetration requirement may result in deeper penetration of the drain into bedrock
containing sandstones and additional sumps to collect drain inflow at these and other low
points.
A Job Safety Analysis USA) will be prepared before construction that will specify dust
..
control measures to limit dust inhalation exposures. These measures include the premoistening
of the excavation area with a sprinkler system for three days prior to start-up, and the:
continued moistening of the site throughout the excavation. Ambient air high volume air
s:lmplers will be used to measure radiation and wind velocity. These will be installed before:
commencement of construction.
Operations will be suspended by requirements in the
Occupational Safety Analysis (OSA) if wind velocity exceeds 15 mph or alpha radiation
exceeds 0.03 DCi/m3 as measured by a high volume sampler located immediately downgradie:nt
of the construction activities. Furthermore, construction traffic will be carefully routed to
further minimize release of any plutonium contaminated dust. A Health and Safety Plan will
also be prepared for construction activities that will supplement the JSA.
During construction of the french drain, the excavation will be inspected by a Colorado
registered geotechnical engineer to verify and document the suitability of the materials into
which the drain is keyed. Ground-water monitoring wells will be installed upgradient and
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
81"'1\881 \iap-MC6.jan
JANUARY 1990
-------
downgradient of the french drain at locations where the colluvial material is saturated or
subcropping sandstones are encountered to monitor the effectiveness of the ground water
collection system.
A PVC drainage pipe inside the drain will direct flow under gravity to two 3-foot
diameter collection sumps. Each sump will be equipped with a submersible sump pump to
deliver the water from the drain to the new treatment plant. The downstream face of the
french drain will be covered with a synthetic membrane to limit flow from the clean side of
the drain. The inclusion of the downstream synthetic membrane coupled with the continuity
of the drain will provide positive cutoff of the ground water. The upgradient face of the
french drain will be covered with a geotextile filter fabric to minimize intrusion of soils into
the drain rock. The fabric pores will be of a size that prevents clogging.
Water collected from a source well at SWMU 119.J (a new withdrawal well near well
9-74) will also be treated in the new treatment plant. In addition, a sump will be built to
collect the flow from the Building 881 footing drain.
Two sump pumps will be used to
transfer the footing drain flow to the treatment plant in a separate piping system.
The ground water collected will be treated using a UV peroxide system (for organics
removal) and an ion exchange system (for inorganics removal). A new building will be erected
for enclosure of the water treatment system to protect weather or temperature sensitive
components. External water pipes will be buried approximately four feet to protect against
f reezin g.
Fire protection within the building will be provided by two wall mounted 25 pound
dry chemical type fire extinguishers. The building and all treatment units are constructed of
non-combustibles. Other than minimal files and records, no combustible materials will be
maintained within the building. Major components of the treatment system include:
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
-r"I\881 \iap-HC6.jan
JANUARY 1990
-------
Exterior to Buildin2
.
Two 15,OOO-gallon influent surge tanks.
Two 1 15,OOO-gallon effl uent tanks.
Piping.
Associated pumps, gages, and valves.
.
.
.
Interior to BuildinlZ
.
UV /peroxide equipment.
Ion exchange system equipment.
Parallel system of fil ters.
Sump pump.
Associated pumps, piping, gages, and valves.
Support equipment for treatment units, including a hydrogen peroxide supply
tank and feed system for the UV /peroxide process, and ch~mical feed tanks for
the ion exchange system.
.
.
As shown in Figure 6-1, all of the collected ground water will be pumped into the surge
tanks.
As the flows from the different sources are expected to vary, the surge tanks will
ensure a constant flow through the tre:ltment unit at 30 gpm. 8 hours per day. These tanks will
also provide approxim:ltely two days collection potential when the treatment unit is down for
repairs, cleaning, etc.
When the treatment is initiated, the water will be pumped from the surge tanks through
filters to remove suspended materials. The filters will be placed in descending order of size
to remove progressively smaller particulates. The water will next enter the UV /peroxide
trea tmen t uni t.
The UV /peroxide tn:atment unit consists of an 80-gallon stainless steel oxidatio:1
chamber, which provides for a maximum ground-water retention time of 2.66 minutes at a
system flowrate of 30 gpm. The oxidation chamber contains four medium pressure UV lamps.
which are mounted horizontally in quartz sheaths. A hydrogen peroxide feed system is used
to inject approximately 140 mg/l (50 mg/l per ppm of organic contaminants) of a 50 percent
H~:02 solution into the ground-water feed line. The ground-water/peroxide mixture then
passes through an in-line static mixer before entering the bottom of the oxidation chamber.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
.r.kr\881 \i.p-8t'~6.jaD
JANUARY 19QO
-------
':U11
.~ O;:J
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------.
,
PERO>I(,[
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---~~V OXIDATION
l~L CtlAMBER
filTER
WEll 9-74
(~
IIlf WEt iT
SluRAGE IAlII\S
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rRENCIi DRAIN
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.IICI
Noult
I
I
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-,
STRONG SASE
ANION UNIT
WEAl( ACID
CATION UNIT
I
1 I -.
I I I
: L______-- ------_J
I
I OECARBOHAlOR
I
t
SPENT
ACID
CATION
UtUT
-.
I
I
I
I
I
I
I
I
I
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I
I
---------f
,
SPENT CAUSTIC
ANION
UN"
HFlUHiT
STORAGE
TANKS
TREATED WATER TO
SOUTH INTERCEPTOR TRENCH
;!i~
no< g
tIJ... ~
oo~"V
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FIGU RE
6-1
TREATMENT SYSTEM
PROCESS
-------
The ground water then flows through the reaction chamber, passing the UV lamps, before ir
exits the top of the oxidation chamber. As the ground water passes the UV lamps, the organic
contaminants will be effectively destroyed to comply with chemical- specific ARARs.
The water is then sent to the ion exchange system for inorganic contaminant removal.
The water first passes through a strong base anion exchanger where uranium is selectively
removed, to prevent contamination of downstream treatment units. The water then passes
through a weak acid cation exchanger, where heavy metals are removed.
This unit also
transforms the total dissolved solids (TDS) associated with carbonate hardness into carbonic
acid. The carbonic acid is subsequently removed by decarbonation. Following decarbonation.
the flow is split between a two-bed demineralizer for TDS removal, and an activated alumina
unit for selenium n:moval. The effluent from these two units are blended to produce a final
effluent which will meet or exceed all chemical-specific ARARs.
The ion exchange resins and activated alumina require periodic regener:ltion to
maintain tre:ltment effectiveness. However. the strong base anion exchanger for uranium
. .
removal will not be regenerated, but instead will be periodically disposed of as low-level
radioactive waste and replaced with a new unit. Rocky Flats' potable water supply will be
used to provide the water for the regeneration of all the units. The regeneration wastes will
be sent to the Building 374 Process Waste Treatment System for final treatment and disposal.
Following treatment, the water will be directed to an effluent storage tank sized for
one week's flow. Sufficient tankage will be provided to allow the continued operation of the
tre:ltment facility whiie waiting for analytical results on effluent quality prior to discharging
to the South Interceptor Ditch. Effluent of unacceptable quality will be returned to the
influent storage tanks for additional treatment.
Effluent will always be analyzed prior to
discharge.
All tanks, piping and sumps will be equipped with secondary containment to comply
with 6 CCR 1007-3 and 40 CFR 264.193.
INTERIM R.E.".fEDlAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, C,OLORADO
8c&c\881 \iap-eec6.jan
JANUARY 1990
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Water disl;harged from the treatment system will pass through Pond C-2 and eventually
into Woman Creek. This discharge is monitored, according to the Rocky Flats Plant NPDES
Permit which was modified on II July 1989 on a temporary basis by the Colorado Water
Quality Control Commission. The modification calls for analysis of organic and inorganic'
contaminants in ground water at the RFP, which include promulgated in-stream standards for
Walnut and Woman Creek.
Alternatives to direct discharge of treated effluent that were evaluated during the FS
incl ude ground-water reinjection down gradient of the french drain in the Valley Fill
I
Alluvium. and ground-water reinjection upgradient of the 881 Hillside Area to facilitate soil
washing.
Ground-water reinjection for soil washing can hasten the removal of volatile
organics from contamin:lted soils and ground water.
However, the effectiveness of this
technology in the clayey soils of the 881 Hillside Area is uncertain. The technology may be
an appropriate addition to this remedial action in the future if cleanup is deemed to be
proceeding slower than expected. The reinjection of treated ground water downgradient of
the french drain is deemed not to be necessary because of the interaction between surface
water and alluvial ground water.
6.2
A DDTTTON A l DOCt:~fE:'-ITS
In addition to this 1M/IRA Plan. the following documents will be prepared:
health and safety plan for construction of the 1M/IRA;
community relations plan;
detailed design plans and specifications;
detailed "as-built" drawings incorporating all field changes to accurately reflect
the constructed ground water collection and treatment system; and
an operation and maintenance manual for the 1M/IRA.
INTERIM REMEDIAL ACTION PL;u.l FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GCJLDEN, COLORADO
ec&£c\881 \iap-HC6.j&n
JANUARY 1990
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SECTION 7.0
REFERENCES
DR COG. 1989. RDRCOG makes 1989 Estimates of Metro Population and HouseholdsR. Denver.
Regional Council of Governments. September 1989.
U.S. EPA. 1983. Treatability Manual. Volume IV: Cost Estimating.
U.S. EP A. 1985. Compendium of Remedial Technologies at Hazardous Waste Sites.
R. S. Means Co.. 1987. Building Construction Data.
Rockwell International. 1988a. Draft Final Remedial Investigation Report for High Priority
Sites (881 Hillside Area). March 1988.
Rockwell International. 1988b. Draft Fc:asibility Study Report for High Priority Sites (881
Hillside Area). March 1988.
Rockwell International. 1989. 881 Hillside Remedial Investigation and Fc:asibility Study
Rc:sponses to EP A Comments. February 1989.
INTERIM REMEDIAL AC'I'ION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN, COLORADO
er.kr\881 \iap-_1.jan
'lUARY 1990
-------
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.;::;:~tlNTERIM MEASURES liNTER 1M REMEDIAL-
'.' -ACTioN PLAN AND DECISION DOCUMENT
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881 HillSIDE AREA
OPERABLE UNIT NO.1
u.s. DEPARTMENT OF ENERGY
Rocky Flats Plant
Golden, Colorado
JANUARY, 1990
Volume" - Appendix
-------
VOLUME II
APPENDIX
SECTION I
V ola tile Organic Compound. D issol ved Metals. Inorganic Compound, and
Radiochemistry Analytical Results for Alluvial Wells at the 881 Hillside
Wells/Stations in this group:
09-74, 10-74, 01-87, 04-87, 06-'87, 43-87,
44-87,49-87, 50-87, 51-87, 52-87,53-87,
54-87.
SECTION 2
V olatile Organic Compound, D issol ved Metals, Inorganic Compound, and
Radiochemistry Analytical Results for the Building 881 Footing Drain
Discharge
Wr:lls/Stations in this group: SW-4S.
SECTION 3
Volatile Organic-Compound Dissolved Metals. Inorganic Compound, and
Radiochemistry Analytical Results for Alluvial Wells Downgradient of
the 881 Hillside
Wells/Stations in this group:
64-86, 65-86. 66-86, 69-86. 02-87, 47-87,
48-87, 55-87.
INTERIM REMEDIAL AC'I'ION PLAN FOR THE 881 HILI.SIDE AREA
R.OCKY FLATS PLANT, GOLDEN. COLORADO
-------
SECTION 1
VOLA TILE ORGANIC COMPOUND, DISSOLVED METALS,
INORGANIC COMPOUND, AND RADIOCHEMISTRY ANALYTICAL RESULTS
FOR ALLUVIAL WELLS AT THE 881 HILLSIDE
\ WELL/STATIONS IN THIS GROUP:
09-74
10-74
01-87
04-87
06-87
43-87
44-87
49-87
50-87
51-87
52-87
53-87
54-87
INTERIM RE.'dEDIAL ACTION PLAN FOR. THE aal HILLSIDE AREA
R.OCKY FLATS PLANT. GOLDEN. COLORADO
-------
ALLUVIAL WELLS AT THE 881 HILLSIDE
VOLATILE ORGANIC RESULTS
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN. COLORADO
-------
Groundwater Volati e organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 HILLSIDE
\Jell Date Chiaro IIrollio Vinyl Chi oro Hethylene Carbon
NLillber Sallpl ed Qt!'. methane mcthanc [hloride ethane Chloride Acetone Disulfide
ug/I ug/I ug/l ug/l ug/I ug/I ug/l
09-71, 03/09/87 1 NR NR NR NR NR NR NR
09.71, 01,/09/87 1 NR NR NR NR NR NR NR
09.71, OS/21/87 2 NR NR NR NR NR NR NR
09.71, 07/02/87 3 NR NR NR NR NR NR NR
09-71, 08/11/87 3 DRY
09-71, 10/20/87 I, NR NR NR NR NR NR NR
09-71, 10/28/87 I, IOU tOu IOU IOU 1. J 7. JB 5U
09-71, 11/17/87 I, 10 U 10 U 10 U 10 U 1,8 10 U 5 U
09.71, 02/25/88 1 IOU IOU 10 U 10 U 5 U 10 U 5 U
09-71, 01,/11,/88 2 10 U 10 U 10 U 10 U 5 U 9 J 5 U
09-71, 01,/15/88 2 IOU IOU 10 U 10 u 5 U 10 U 5 U
09-71, 07/20/88 3 IOU 10 U 10 U 10 U 5 U 10 U 5 U
09-71, 10/25/88 I, 10 U 10 U 10 U 10 u 23 10 U 5 U
09-71, 01/25/89 1 tOu 10 U IOU R 10 U 5 U 10 U 5 U
09-71, 01,/21,/89 2 tOu 10 U IOU 10 U 5 J 10U R 5 U
09-71, 05/15/89 Oatil not yet received
09-71, 05/15/89 Data not yet received
09-71, 05/15/89 I NSUfF 1[IENI SAMPLE FUR VOLATilE ORLANIC ANALYSIS
09-71, 05/16/89 Dal.. not yet received
09-71, 08/22/89 Ddla not yet received
09-71, 011/22/89 Dala not yet received
NR = Anal yte not reponed
J = Present below detect Ion I illii (
U = AnalY1cd but nut detected
II = Present In Idbor.J(ory blank
* " Holding tiDle nol DlCt
N " Batch spike not in 80.120~ range
E " Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS AT TilE 661 IIILLSIDE
1,1-0 i - 1,1-0 i - I r ,illS - 1 , 2 - 1,2-0 i - 1,I,I-Tri
~ell Date chiaro chiaro Dichloro chiaro chiaro
NUliber Sauipl ed Otr. ethcne ethane ethene [Iolorolorm ethane 2-Butanone ethane
uy/I uy/I uy/l u9/1 U9/1 ug/l ug/l
-----
09-11. 03/09/87 1 121,00 Nil Nil I. U 7') Nil 13800
09-11. 01./09/87 1 9600 Nil Nil I. U 126 NR 12600
09-11. 0')/21/87 2 1,8000 Nil Nil I. U 16000 Nil I. U
09-71. 07/02/87 :3 703 Nil Nil I. U ')262 NR 2028')
09-11. 08/11/81 3 OilY
09-11. 10/20/87 I. 211530 Nil Nil ') U 31. Nil 302')0
09-11. 10/28/87 I. 5u 5u 5u 5u ')U IOU 5U
09-11. 11/11/87 I. 23056 51. Nil 5 U 4J 10 U 21692
09-71. 02/25/88 1 1.1.70 15 Nil 5 U 15 10 u 3020
09-11. 01./11./88 2 3820 ') U Nil 5 U 5 u 10 U 3130
09-11. 01./1')/88 2 3390 5 U Nil 5 U 5 U 10 U 3110
09-11. 01/20/88 3 3380 5 U NR 5 U 5 U 10 U 5 U
09-14 10/2')/88 4 1,800 a NR I, JB 5 U 10 U 8200
09-11. 01/25/89 1 5300 1110 J Nil 5 U 11 J IOU R 10000
09-71, 01./21./89 2 6600 J 11. J Nil ') U 17 J 10 U 5700 J
09-71. 05/1')/89 Data not yet rcccived
09-71. 05/15/89 Data not yet receivcd
09-71. 05/15/89 INSUfflCIENr SAMPLE fOR VOlAlllE OU~ANIC ANALYSIS
09-71. 05/16/89 Data not yet received
09-11, 08/22/89 Data not yet reed ved
09-71. 011/22/89 Data not yet receivcd
Nil = Analyte not reported
J = Present below dctection limit
U = Analyzed but not dctected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
Carbon Bromo 1,2-0 i - Cis -1,1- Dibromo
Uell Date Tetra Vinyl dichloro chiaro Dichiara trichloro chiaro
NUlioer Sanpl ed CHI'. chloride Acetate methane prop.me propene ethene methane
ug/I ug/I ug/I ug/I ug/I ug/I ug/I
09-71, 01/09/87 1 I, U NR NR NR NR 20000 NR
09-71, 01,/09/87 1 I, U NR NR NR NR 20800 NR
09-71, OS/21/87 2 28UUO NR NR NR NR 72000 NR
09-71, 07/02/87 3 I, II NR NR NR NR 11768 NR
09-71, 08/11/87 3 ORY
09-71, 10/20/87 I, 5 U NR NR NR HR 12760 NR
09-71, 10/28/87 I, 5u IOu 5u 5U 5U 21,. B 5U
09-71, 11/11/87 I, 3522 10 u 5 u 5 u 5 u 17538 5 u
09-71, 02/25/88 1 990 10 U 5 u .5 u 5 u 6810 . 5 u
09-71, 01,/11,/88 2 1200 10 u 5 u 5 u 5 U 581,0 5 U
09-74 01,/15/88 2 111,0 10 U 5 U 5 u 5 U 5860 5 U
09-74 01/20/88 3 5 u 10 U 5 U 5 u 5 U 1,180
09-74 10/25/88 I, 5 u 10 U 5 U 5 U 5 U 950r
09-71, 01/25/89 1 5 u 10 U 5 u 5 u 5 u 7r
09-71, 01,/21,/89 2 5 u lOu R 5 U 5 u 5 U t
09-74 05/15/89 Data not yet received
09-71, 05/15(89 Data not yet received
09-7~ 05/15/89 INSUffiCIENt SAHPLE fOR VOlAIllE ORGANIC ANALYSIS
09-71, 05/16/89 Data not yet received
09-71, 08/22/89 Oat a not yet received
09-74 08/22/89 Data not yet received
NR " Analyte not reported
J " Present below detection limit
U " Analyzed but not detected
B " Present in laboratory blank
. " Holding time not met
N " Batch spike not in 80-11
.[ imatet
" Data.re.
-------
r
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
" 1,2-1 I' i Irans-I,}- 2-(hloro I,,-HClhyl-
Yell Dale chiaro Dichloro ethylvinyl 2 - pcnta
NLiuber Sanpl ed Qtr. elhane 8enzene propene elher Bromoform none 2 - Huanone
ug/I ug/I ug/I ug/I ug/l ug/l ug/I
-
09-71. 0}/09/87 1 96 Nil Nil Nil Nil NR Nil
09-71. 04/09/87 1 I. U Nil Nil Nil Nil Nil Nil
09-71. OS/21/87 2 I. U Nil Nil Nil Nil Nil Nil
09-74 07/02/87 } I, u Nil Nil lOR Nil Nil Nil
09-74 08/11/87 } DRY
09-74 10/20/87 I, 5 u lOR Nil Nil Nil Nil Nil
09-71, 10/28/87 I. 5U 5U 5U 10U 5U IOU 10U
09-71, 11/17/87 I, 139 5 U 5 U Nil 5 U 10 U 10 U
09-71. 02/25/88 1 5 u 5 U 5 u 10 U 5 u 10 U 10 U
09-71. 01./11,,/86 2 It.740 5 U 5 U 10 u 5 u 10 U 10 U
09-71. 04/15/66 2 11.190 5 U 5 U 10 U 5 u 10 u 10 U
09-71. 07/20/88 ] 5 U 5 u 5 u 10 U 5 U 10 U 10 U
09-71. 10/25/88 I" 7] 5 U 5 U 10 U 5 U 10 U 10 U
09-71, 01/25/89 1 39 J 5 U 5 U Nil 5 U 10 U 10 U
09- 74 04/24/89 2 t.7J 5 U 5 U Nil 5 U 10 U 10 U
09-74 05/15/119 Dalo.! 1101 yo::! received
09-71" 05/15/89 Dala not yel reccived
09-74 05/15/89 INSUffiCIENT SAMPLE fOR VOLAIIlE ORGANIC ANALYSIS
09-74 05/16/89 Data not yet receivcd
09-74 08/22/89 Dala nul yet receivcd
09-74 06/22/89 Dala lIot yel received
Nil :; Analyte not reported
J :; Present below detection limit
U = Analyzed but /101 detected
8 :; Prcsent In lauoratory blank
. = HOlding time not met
N = Batch spike not in 80-120X range
E = Est imateo
R :; Data re'
-------
Groundwater Volatile organic Results
For Wells at Rockwell (Rocky .Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
Tetra I, 1,2,2-
\.Ie II Date chiaro Tetrachloro Chiaro Ethyl. Total
NUlber Sall1J1 ed Qtr. ethene ethilne Toluene benzene benzene Styrene Xylenes
ug/l ug/l ug/l ug/l ug/l ug/l ug/l
09-74 01/09/87 1 6400 NR NR NR NR NR NR
09-74 04/09/87 1 21,00 NR NR NR NR NR NR
09- 74 05/21/87 2 B200 NR NR NR NR NR NR
09-74 07/02/87 1 1191 NR NR NR NR NR NR
09- 74 08/11187 1 DIH
09-74 10/20/87 4 5840 NR NR NR NR NR NR
09-74 10/28187 4 5u 5u 5U 5U 5U 5U 5U
09-74 11/17187 4 6122 5 U 19 5 U 5 U 5 U 5 U
09-74 02/25/88 1 1800 5 U 5 u 5 U 5 U 5 U 5 U
09-74 04/14/88 . 2 1940 5 U 5 U 5 U 5 U 5 u 5 U
09-74 04/15/88 2 1920 5 U 5 U 5 U 5 U 5 u 5 U
09-74 07/20/88 1 1180 5 U 5 U 5 U 5 U 5 U 5 U
09-74 10/25/88 4 2500 5 U 2 J 5 U 5 U 5 U 5 U
09-74 01/25/89 1 780E 5 U 5 U 5 U 5 U 5 U 5 U
09-74 04/24/89 2 2800 J 5 U 5 J 5 U 5 U 5 U 5 U
09- 74 05/15/89 Data not yet received
09-74 05/15/89 Data not yet received
09- 74 05/15189 INSUfflCIENI SAMPLE fOR VOLATILE ORGANIC ANALYSIS
09-74 05/16/89 Oat a not yet received
09-74 08/22189 Data not yet received
09-74 08/22/89 Oat a not yet received
NR = Analyte not reported
J = Present below detection limit
U = Analyzed Out not detected
8 = Present in laboratory blank
. = Holding time not lIIet
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
Uell Date Chiaro Bromo Vinyl Chiaro "ethylene Carbon
HUlLer Sa/lipl ed Qtr. methane methane Chloride ethane Chloride Acetone Disulfide
ug/I ug/I uy/I uy/I uy/l ug/I ug/l
------ -------
10-71, OS/21/87 2 NR NR NR NR NR HR NR
10-71, 07/01/87 3 DRY
10-71, 10/20/87 I, NR NR NR NR NR HR NR
10-710 10/20/87 I, 100U 100U 100U lOOU 10. J 120. 8 SOU
10-71, 02/25/88 1 lOU lOU 10 U 10 U S U 10 u 5 u
10-71, 07/19/88 3 10 U 10 U 10 U 10 U 5 u 10 U 5 U
10-74 10/25/88 4 10 U lOU 10 U 10 U 5 u 10 U 5 U
10-71, 01/ 16/89 1 lOlJ R IOu R 10 U 10 U 6U 10 U 5 U
10-71, 01,/21,/89 2 10 U 10 U 10 U 10 U 5 J IOU R 5 U
10-710 06/09/89 Oilla not yet received
10-71, 06/09/89 Dilta not yet received
10-74 06/10/89 INSUfflCIENI SAHPlE fOR VOlArllE ORGANIC ANALYSIS
10-71, 06/12/89 Data not yet received
10-71, 08/23/89 Oala not yet received
10-71, 08/23/89 Oala nOI yet received
01-87
10/12/87 I,
DRY
01-87
01-87
02/10/88 1
01, /11/88 1
10 lJ
ORY
10 u
10 u
10 U
5 U
10 U
S U
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-120% range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
I, \-0 i - 1,1-0 i- I r ,ms - 1,2. 1,2-0 i - 1.1,I-Iri
LIe II Date chloro chi oro Dichloro chiaro chiaro
NUlber Sa~led Qtr. ethene ethane ethene Chloroform ethane 2-Butanone ethane
ug/l ug/l uy/l uy/I u!J/I ug/l ug/l
10-71, OS/21/87 2 I, U NR NR I, U 11,0 NR I, U
10-71, 01/01/87 3 DRY
10- 71, 10/20/87 I, 5 U NR NR 30 5 U NR 5 U
10- 71, 10/20187 I, sou SOU SOu 12. J SOU 1000 50U
10-71, 02/25/88 1 5 u 5 U NR 1,2 5 U 10 U 312
10-71, 07/19/88 3 5 u 5 U NR 51 5 U 10 u 5 U
10-71, 10/25/88 4 ~ U 5 U NR 30 B 5 U 10 U 5 U
10-71, 01/16/89 1 5 u 5 U NR 22 U 5 U 10U R 5 U
10-71, 01,/21,/89 2 5 U 5 U NR 5 U 5 U 10 U 8 J
10-71, 06/09/89 Data not yet received
10-71, 06/P9/89 Data not yet received
10-71, 06/10/89 INSUfflCIENI SAHPLE fOR VOLATILE ORGANIC ANALYSIS
10-71, 06/12/89 Data not yet received
10-71, 08/23/89 Data not yet received
10-74 08/23/89 D<1ta not yet received
01-87
10/12/87 I,
DRY
01-87
01-87
02/10/88 1
01,/11/88 1
5 U
DRY
5 u
NR
5 U
5 U
10 U
5 u
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding t iDle not met
N = Batch spike not in 80-1204 range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 IIILI.SIDE
Ci:H Lun IIrwlv 1,2-0i - Cis- 1,1- Oibromu
Yell Date letra Vinyl dlchloro clll oro Dichiara Irichloro chiaro
Nuuber Sampled Qtr. chloride Acetate mdhane propane propene ethene olethane
ug/I ug/I IIg/l ug/I ug/l ug/I ug/I
- ---_._-- -----. ----
10-71. OS/21/87 2 gOO NR NR NR NR 3600 NR
10- 71. 07/01/87 3 LJI
-------
Groundwater Volat1
organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
1,1,2 -I r i Ir ans - 1 . 1- 2. Clil oro I, -Methyl -
Uell Date chiaro Dichiara ethyl vinyl 2-penta
NlJlber Sampled Qtr. ethane Benzene propene ether Bromolorm none 2-Hexanone
ug/I ug/I ug!l ug/I ug!l ug/I ug!l
10-71, OS/21/87 2 I, U NR NR NR NR NR NR
10-71, 07/01/87 3 DRY
10-71, 10/20/87 4 5 U NR NR NR NR NR NR
10-71, 10/20/87 4 50U 50U 50U 100U SOU 100U 100U
10-71, 02/25/88 1 5 U 5 U S U 10 U S U 10 U 10 U
10-71, 07119/88 3 S U S U 5 U 10 u S U 10 U 10 U
10-71, 10/25/88 I, S U S U S U 10 U S U 10 U 10 U
10-74 01/16/89 1 S U S U S U NR S U 10 U 10 u
10-74 01,/24/89 2 S U S U S U NR S U 10 U 10 U
10-74 06/09/89 Data not yet received
10-74 06/09/89 Data not yet received
10-74 06/10/89 INSUfflCIENI SAMPLE fOR VOlAIIlE ORGANIC ANALYSIS
10-74 06/12/89 Data not yet received
10-74 08/23/89 Data not yet received
10-74 08/23/89 Data not yet rece i ved
01-87
10/12/87 4
DRY
01-87
01-87
02/10/88 1
04/11/88 1
5 U
DRY
S U
S U
10 U
5 U
10 U
10 U
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in lal>oratory blank
. = HOlding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
,
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE BBi HILLSIDE
Tetra 1, 1,2,2-
~ell Date chiaro Tetrachloro Chiaro Ethyl Total
Nuubcr Sampled Qtr. ethene ethane lolllcne benzene benzene Styrene Xylenes
ug/I lIg/1 ug/I ugJl ugJl ug/I ugJl
10- 71, OS/21/87 2 I, U NR NR NR NR NR NR
10-71, 07101187 3 IJlB
10-71, 10/20/87 I, ~ II NR NR NR NR NR NR
10-71, 10/20/81 I, 5uu 50U 50u 50U SOU SOU SOU
10-71, 02/25/88 1 17 5 U 5 U 5 u 5 U 5 u 5 U
10-71, 07/19/88 3 5 U 5 u 5 U 5 u 5 u 5 u 5 'u
10-71, 10/25/88 4 5 U 5 u 5 u 5 u 5 u 5 U 5 u
10-71, 01/16/89 1 2 J 5 u 5 u 5 U 5 U 5 U 5 u
10-74 04/21,/89 2 17 J 5 U 5 J 5 u 5 u 5 U 5 u
10- 71, 06/09/89 Data not yet received
10-71, 06/09/89 Data not yet received
10-74 06/10/89 INSUffICIENT SAMPLE fOR VOLATILE ORGANIC ANALYSIS
10-74 06/12/89 Oata not yet received
10- 71, 08/23/89 Dilta not yet received
10-74 08/21/89 Data not yet received
01-87
10/12/87 I,
DRY
01.87
01-87
02/10/88 1
01,/11/88 1
5 U
DRY
5 U
5 U
5 u
5 u
5 u
5 u
NR = Analyte not reported
J = Present below dctectlon Ii mil
U = Analyzed bill not detected
8 = Present in laboratory blank
. = HOlding time not DIet
H = Batch spike not in 8U-120X range
E = Estimated value
-------
Groundwater Volatile Organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
IJc II Date Chiaro
Nl.libcr Salllpled Qtr. mcthanc
uy/I
01-87 0~/11/88 2
01-87 07/20/88 3
01-87 10/26/88 4
01-87 06/06/89
01-87 08/17189
uy/I
Vinyl
Chloride
uy/l
Chiaro
61'01110
ole thane
ethune
uy/l
Hclhylenc
Chloride
uy/I
Acetone
ug/l
Carbon
Disulfide
ug/l
DRY
10U
10 U
10 U
10 U
10 U
10 U
10 U
10 U
5 U
5 U
10 U
10 U
5 U
5 U
Duta not yet received
Dutil not yet received
04-87 OS/20/87 1 NR NR NR NR NR NR NR
0~-87 05/26/87 :2 10U IOU IOU IOU 15 B I, J 5U
0~-87 07/09/87 3 NR NR NR NR NR NR NR
0~-87 10/14/87 4 NR NR NR NR NR NR NR
0~-87 10/14/87 I, INSUfflCIENI SAMPLE fOR VOlAIILE ORGANIC ANALYSIS
0~'87 02115/88 1 10 U 10 U 10U 10 U 5 U 10 U 5 U
0~-87 0~/13/88 :2 10 U IOu 10 U 10 u 5 U 10 U 5 u
0~-87 0711~/88 3 10u IOU 10U 10 u 5 U 10 U 5 U
0~-87 10/20/88 ~ IOu 10U 10 U 10 U 5 U 10 U 5 U
0~-87 01112/89 1 IOU R IOU R 10u IOU R 5 U IOU 5 U
0~-87 0~117/89 2 10 U IOU IOu 10 U 5 U 10 U 5 U
0~-87 06/09/89 Data not yet receivcd
0~-87 06/09/89 Data not yet receivcd
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
* = Holding time not o~t
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 IIILLSIDE
1,1-0 i - 1. 1- () I - 1 I' ..II~ - 1,2 - 1,2-Di -
Yell Dilte chiaro chiaro Dichiara chiaro
NUlber Sa1l4)1 cd OtL ethcne ethallc clhclle (hlorolorm ethalle 2-lIutanone
U9/1 u'J/I "9/1 u9/1 It'J/1 ug/I
- --_.- - ----- ------ --.-- -----
1.1.1-Jri
chiaro
ethane
ug/l
01-87 04/11/88 2 DRY
01-87 07/20/88 ] 5 U 5 U NR 5 U 5 U 10 U 5 U
01-87 10/26/88 4 5 U 5 U NR 5 U 5 U 10 U 5 U
01-87 06/06/89 O"la lIut yet rcceived
01-87 08/17/89 Oala I\ot yet rcceived
04-87 OS/20/87 1 8 NR NR I, U ]2 NR " U
04-87 OS/26/87 2 ] J 5u 5u 6 SU IOU 5
010-87 07/09/87 ] 10 U NR NR I, U I, U NR " U
010-87 10/11,/87 I, 5 u NR NR 5 U 5 U NR 5 U
010-87 10/14/87 4 INSUfF ICIENI SAMPLE fOR VOLAJ HE ORGANIC ANALYSIS
04-&7 02/15/88 1 5 u 5 U NR 5 u 5 U 10 U 11
010-87 010/13/88 2 ] J 5 U NR 5 U 5 U 10 U 20
04-87 07/14/88 ] 5 u 5 U NR 5 u 5 U 10 U 5 U
04-87 10/20/88 4 5 u 5 U NR 5 u 5 u 10 U 5 U
04-87 01/ 12/89 1 5 u 5 U HR 5 U 5 U IOU R 5 U
04-87 010/17/89 2 ~ u 5 U NR 5 U 5 U 10 U 5 U
010-87 06/09/89 Dill a 1101 yet received
04-87 06/09/89 Oala lIul yet received
NR = Analyte not reported
J = Present below detection limit
IJ = Analyze'" but nut detected
8 = PI'e~ent in I"boratory blank
. = Holding timc not met
N = Satch spike-not in aO-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 HILLSIDE
Carbon Bromo 1.2-0i - Cis-I.J- Dibromo
Lid I Date letra Vinyl dlchloro chloro Dichloro I ri chi oro chloro
Nuuber Sanpled Qtr. chloride Acetate methane propane propene ethene methane
119/1 119/1 11\,1/1 U9/1 U9/1 u9/1 ug/I
- --_.~
01-87 04/11/88 2 OI
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 IIILLSIDE
" 1,2 - I. i 1 r .II\S - I, j - 2-(hloro I,-Methyl-
~ell Date chiaro Dichiara elhylvinyl 2-penta
NUlber Sauf}1 ed CHr. elhane Benzene propene elher IIrolliolorlll none 2-Hexanone
ug/I ug/I ug/I ug/I ug/I uMI ug/I
01-87 01,/11/88 2 DRY
01-87 07/20/88 :} 5 u 5 U 5 U 10 U 5 U 10 U 10 U
01-87 10/26/88 I, 5 u 5 U 5 u 10 U 5 U 10 u 10 U
01.87 06/06/89 Oald nOI yet rece i veLl
01-87 08/17 /89 Dilla nOI yet received
01,-87 OS/20/87 1 I, u NR NR NR NR NR NR
01,-87 OS/26/87 2 5u 5u 5u 10U 5U 10U 10U
01,-87 07/09/87 :} I, U NR NR NR NR NR NR
01,-87 10/11,/87 I, 5 U NI! NR NR NR NR NR
01,-87 10/11,/87 " INSLJfflCIEHI SAMPlE fOR \/Ol AllIE ORGANIC ANALYSIS
01,-87 02/15/88 1 '> II '> II '> II 10 U 5 U 10 U 10 U
01,-87 01,/13/88 2 5 lJ 5 lJ 5 u 10 U '> U 10 U 10 u
01,-87 07/11,/88 :} '> u 5 II 5 u lUu '> u 10 U 10 U
01,-81 10/20/88 I, 5 II '> u 5 u 10 U 5 u 10 U 10 u
01,-87 01/12/89 1 '> II '> u 5 U NR 5 U 10 U IOU
01,-87 01,/17/89 2 '> II 5 u 5 U NR 5 U 10 U 10 u
01,-87 06/09/89 Oala nOI yel received
01,-87 06/09/89 O.lla nOI yd received
NR = Anal yt e not n~ported
J = Present helow lIetect ion I illil I
U = Analyzed but not detected
B = Present In lahor,Hory blank
. = Holding time not lIIet
N = Batch spike not in 80-1204 range
E = Estimated value
-------
Groundwater Volatile Organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE BBl HILLSIDE
tetra
~ell Date chloro
NUliber Sa"~led Qtr. ethene
ug/I
01-87 04/11/88 2
01-87 07/20/88 3
01-87 10/26/88 I,
01-87 06/06/89
01-87 08/11/89
I, 1,2.2-
letrachloro Chloro Ethyi 'atai
ethane lolue/le benz ene benzene Styrene Xyienes
ug/I ug/t ug/i ug/i ug/i uglt
ORY
5 u
5 lJ
5 u
5 u
5 u
5 u
5 u
5 u
5 u
5 U
5 u
5 u
5 u
5 u
OJla /101 yet received
DiJliI /lot yet received
04-87 OS/20/87 1 84 NR NR NR NR NR NR
04-87 OS/26/87 2 II, 5U 5U 5u 5U 5U 5U
04,87 07/09/87 3 I, U NR NR NR NR NR NR
04-87 10/110/87 4 6 NR NR NR NR NR NR
04-87 10/14/87 4 tNSUfF ICIENt SAMPLE fOR VOLAtiLE ORGANIC ANALYSIS
04-87 02/15/88 I 5 lJ 5 U 5 U 5 u 5 u 5 u 5 U
04-87 04/13/88 2 12 5 U 5 U 5 u 5 u 5 u 5 U
04-87 07/14/88 3 5 lJ 5 U 5 u 5 u 5 u 5 u 5 U
04-87 10/20/88 I, 3 J 5 U 5 U 5 U 5 u 5 U 5 u
04-87 01/12/89 1 5 u 5 u 5 U 5 u 5 u 5 U 5 u
04-87 04/17/89 2 6 J 5 U 5 U 5 U 5 U 5 u 5 U
04-87 06/09/89 Dala /lot yet received
04-87 06/09/89 Data not yet received
NR = Analyte not reported
J = Present below detection timit
U = Analyzed but not detected
B = Present in liJboratory blank
. " Hoiding time not met
N " Batch spike not in 80-1201 range
E = Estimated vaiue
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
Yell Date Chiaro Bromo Vinyl Chiaro
NUllbcr San-pl ed Qtr. mcthane methane Chloride ethane
ug/l ug/l lJg/1 ug/l
04-87 06/10/89 I HSUff I C HUI SAHI'I [ lOR VOL AlII ~ ORGANIC ANAlYSIS
04-67 06/12/89 O"ta lIul yel received
04-87 01/26/89 0..1.. 1101 yel I cceivcd
Melhylene
Chloride
ug/l
Acetone
ug/l
Carbon
Disulfide
ug/l
06-87 07/30/87 "5 HI HI HI HI HI Nf IIf
06-87 08/25/87 "5 HR HR IIR IIR IIR IIR IIR
06-87 10/14187 4 /IN HN HR IIR IIR IIR IIR
06-87 10/14/87 4 100J IOU IOU IOU 3JB 4JB 5U
06-87 02/17/88 1 10 u 10 U 10 U 10 U 5 U 10 U 5 U
06-87 04/13/88 2 10 U 10 U 10 U 10 U 5 U 10 U 5 U
06-87 07114/88 "5 10 U 10 U 10 U 10 U 5 U 10 U 5 U
06-87 10/26/86 " DRY
06-87 04/1 7 189 2 10 U 10 U 10 U 10 U 5 U IOU II 5 U
06-87 06/10/89 0..1" lIut yel receivcd
06-67 07/26/89 Oala 1101 yet rece i ved
43-67
12/18/87 4
10U
10 U
10 U
10 U
36
9J
5 U
43-67
02/22/68 1
IOu
IOU
IOu
10 U
1,0
25
5 U
/lR = Analyle not reported
J = Present below delection limit
U = AII"lyzcd bul nOI detected
B = Present in laboralory blank
. = HOlding time not met
N = Batch spike not in 80-120% range
E = Estimated value
-------
Groundwater Volatire organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 HILLSIDE
1,1-0 i - I, 1-0i - I r...115 - 1,2- 1,2-0i - I, I, 1- T I' i
\lei I Date chi oro chloro Oichloro chloro chloro
NUliber Sampled Otr. ethcl1e ethane ethel1e Chloroform ethalle 2-8utanone ethane
ug/I u~/I u~/I ug/I u~/I ug/I ug/I
- -
04.87
04-87
04-87
06/10/89
06/12/89
07/26/89
INSUfflClfNI SAMPLE fOil VOLATILE OkGANIC ANALYSIS
Data not yet received
Odta lIot yet received
06-87 07/30/87 3 In Nf Nf Nf Nf Nf Nf
06-87 08/25/87 :} 5 II Nil Nil 5 U 5 U Nil 5 U
06.87 10/11,/87 I, 5 II Nil Nil 5 U 5 U Nil 5 U
06-87 10/11,/87 I, 5u 5U 5U 5U 5U IOU 5U
06-87 02/17/88 1 5 II 5 U Nil 5 U 5 u 10 u 5 u
06-87 04/13/88 2 5 U 5 U Nil 5 U 5 u 10 u 5 u
06.87 07/11,/88 :} 5 II 5 U Nil 5 U 5 U 10 U 5 U
06.87 10/26/88 I, (!In
06-87 04/17/89 2 5 II 5 II Nil 5 U 5 u 10 U 5 U
06-87 06/10/89 0... Ii, lIut yel received
06-87 07/26/89 Oata lIot yet received
1,J-87
12/18/87 I,
32687
342
Nil
5 U
5 U
10 U
12731,
1,3-87
02/22/88 1
1J1J5~
192
Nil
5 U
18
10 U
5920
Nil = Analyte not reported
J = Present below detection limit
U = Analyzed but lIot detected
B = Present in laboratory blank
. = Holding time lIot filet
N = 8atch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 661 IIILLSIDE
Carhon Bromo 1,2-0 i-
\Jell Date Jetra Villyl dlchloro chloro
NUliber Sanipl ed atr. chloride Acetate methane prup,mc
UCI/I ug/I u~/I ug/I
-- - --.---- -- - -------- -- ---.---
Cis-I, ~-
Dichloro
Trichloro
ethene
Dibromo
chloro
propelle
ug/I
ug/I
methane
ug/I
-------
04-87
04-87
01,-87
06/10/89
06/12/89
07/26/89
INSllffICI~NI SAMPLE tOR VOlAIIlt: OIH;ANll AUAlYSIS
O"t" flOt yet receive lJ 5 U 5 U 5 U 5 U
06-87 06/10/89 Odta 111)( yet reccived
06-81 01/26/89 Dot allot yet received
43-81
12/18/81 4
2110
IOu
5 U
5 U
5 U
6999
5 U
4~-87
02/22/8U
2995
10 II
'> u
5 u
'> U
12920
5 U
NR = Analyte not reported
J = Present below detec t i on I imi t
U = Analyzed but not dctectcd
8 = Present in laboratory blank
. = Holdlllg time not met
N = Batch spike not in 80-1204 range
E = Estimated value
R = Data rejected during vatidation.
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
1,1,2 -I r i I rans - 1,3- 2-[11101'0 I,-Helhyl-
\Je II Date chloro Dichloro elhylvinyl 2-penta
NUlber Saupl ed ou-. ethane Benzelle propelle elher IIrolllolorm none
u!J/I u9/1 lI!J/1 u9/1 u\I/1 uy/I
- ------- - -~~-----_. - -.---------- - --- -----
2-Hexanone
u9/1
01, -87
04-87
04-87
06/10/89
06/12/89
07/26/89
INSUtIICIl 141 SAHI'IE 1011 VUlAIIIE UII(;AN1[ ANAL YSIS
O..liI 1101 yel received
0..1... nol yel received
06-87 07/30/87 3 III NI III Nf Nf Nf Nf
06-87 08/25/87 3 5 U NR NR NR NR NR NR
06-87 10/11,/87 I, 5 U NR NR NR NR NR NR
06-87 10/11,/87 I, 5u 5u 5u 10U 5U 10U 100
06-87 02/ 17/88 1 5 II 5 u 5 u lOU 5 U 10 U 10 U
06-87 01,/13/88 2 5 U 5 U 5 u 10 u 5 U 10 U 10 U
06-87 07/11,/88 3 5 u 5 U 5 U 10 U 5 U 10 U 10 U
06-87 10/26/88 I, OilY
06-87 04/17/89 2 5 II 5 u 5 U NR 5 U 10 U 10 U
06-87 06/10/89 Oala no I yel received
06-87 07/26/89 Oala nol yel received
43-87
12/18/87 I,
48
5 u
5 U
NR
5 U
10 U
10 U
1,3-87
02/22/88
5 II
5 u
5 u
10 U
5 U
10 U
10 U
NR = Analyle not reported
J = Present below detect i on I imll
U = Analyzed bul 1101 delecled
II = Present In laboralory blank
. = IIoldin9 time nOI IIICt
N = Batch spike no I in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Re~ults
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
tdra I, 1,2,2 -
Yell Date chloro letrochloro Chiaro Elhyl lotal
NUliber Sampled Otr. ethene elh"ne 10luL:ne l>cllzene benzene S t yn:ne Xylenes
ug/I uy/I ug/I ug/l ug/l ug/l ug/l
01,-87
01,-87
01,-87
06/10/89
06/12/89
07/26/89
INSUfFICltNI SAMPLE FOR VOlAtiLE ORGANIC ANALYSIS
O"la not yel received
O..tla lIot yel rcceivcJ
06-87 07130/87 3 Nt NF NF NF NF NF NF
06-87 08/~5/87 3 5 U NR NR NR NR NR NR
06-87 10/11,/87 I, 5 U NR NR NR NR NR NR
06-87 10/11,/87 I, 5U 5u 5u 5U 5U 5u 5U
06-87 02/17/88 1 5 u 5 U 5 u 5 u 5 u 5 u 5 u
06-87 01,/13/88 2 5 II 5 U 5 u 5 U 5 u 5 u 5 u
06-87 07/11,/88 3 5 u 5 U 5 U 5 u 5 u 5 u 5 U
06-87 10126/88 I, ORY .
06-87 01,/17/89 2 5 u ':> u ':> U 5 U 5 u 5 u 5 U
06-87 06/10/89 Oala 1101 yet r c( e i v",1
06-87 07/26/89 O.lla lIot yel received
1,3-87
12/18/87 I,
4259
S U
67
5 u
5 U
5 u
5 u
43-87
02122/88
759U
5 U
24
5 u
5 u
5 u
5 u
NR = Analyte not reponed
J" Present below detection limil
U " Analyzed bul lIot detecled
B " Present in laboralory blank
. " Holding time not DIet
N = Batch spike lIot in 80-120X range
E " Estimated value
-------
~
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 HILLSIDE
lie II Date Chi oro 8romo \lllIyl Chi oro Melhylene Carbon
Nliuber Sampled Qtr. methane methane Chloride ethane Chloride Acetone Disulfide
ug/I ug/I ug/I uy/I ug/I ug/I ug/I
1,3-87 01,/11/88 2 lOU lOU 10 U 10 U 19 10 U S U
1,3-87 07/20/88 3 lOU 10 U 10 U 10 U 61 10 U S U
1,3-87 10/17/88 I, lOU lOU 10 U 10 U 31 S J S U
1,3-87 01/25/89 I IOU IOU IOu Ii lOu 5 U 10 U S U
1,3.87 04/21,/89 2 lOu IOU 10 U 10 U S U IOU R S U
1,3-87 06/10/89 Data not yet received
1,3-87 06/10/89 Oilta not yet received
1,3-87 06/11/89 Oilla not yet received
1,3-87 06/11/89 INSUffiCIENT SAMPLE fOR \lOLAIILE ORGANIC ANALYSIS
1,3-87 08/18/89 Data not yet received
1,4-87 11/ 11,/87 I, Din
1,4-87 02/22/68 1 IJin
1,1,-87 01,/18/88 2 OilY
1,1,-87 07/20/88 3 DRY
1,1,-87 10/26/88 I, OilY
1,1,-87 06/10/89 DRY
1,1,-87 . 08/17/89 ORY
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present in laboratory blank
. = Holding time not met
N = 8atch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
1,1 -Oi - 1.1"0 i" I r ans - 1 . 2" 1, 2-0i - 1,I,I-Tri
LJe II Date chloro chiaro Oichloro chloro chloro
NlJlber Sallpl ed Qtr. ethene ethane ethcne (hlorolorlD ethane 2-Butanone ethane
ug/l u!J/I ug/I lJg/1 ug/l U9/1 ug/l
~3-87 04/11/88 2 3525 100 NR 5 U 5 U 10 U 5 U
H-87 07/20/88 3 lH90 H~ NR 5 U 5 U 10 U 5 U
H-87 10/17/88 ~ 11000 35UE NR 3 JB 5 U IOU 25000E
~3-87 01/25/89 1 650U 150 J Nil 5 U 16 J IOU R 15000
H-87 01,/21,/89 2 7900 J 110 J NR 5 U 14 J 10U R 9000 J
H-87 06/10/89 Data not yet received
H-87 06/10/89 Oatil not yet received
H-87 06/11/89 Data not yet received
H-87 06/11/89 INSUfflCIENr SAMPLE fOR VOLATILE ORGANIC ANALYSIS
H-87 08/18/89 Data not yet received
~~-87 11 /1~/87 ~ DRY
~I,-87 02/22/88 1 OilY
I,~-87 04/18/88 2 OilY
~~-87 07/20/88 3 DRY
1,4-87 10/26/88 I, DRY
44-87 06/10/89 OilY
~4-87 08/11/89 DRY
NR = Analyte not '"epoftcd
J = Present below detect Ion I illil t
lJ = AnalYled Uul not dclectt:d
6 = 1'1 csenl In lauofatory blionk
. = Holdin9 time lIot m.!t
N = Batch spike not in 80-120~ range
E = Estimated value
R = Data rejected during validation.
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 HILLSIDE
Carbon Bromo 1.2-0i - Cis-l.1- Dibrofllo
Yell Date I etra V iuyl dichloro chiaro Oichloro lrichloro cMoro
NLJlber Saupled Qtr. chloride Acetate methane prop.me propene ethene methane
"9/1 "9/1 "9/1 U9/1 "g/l ug/l ug/l
1,3-87 04/11/88 2 5 U IOU 5 U 5 U 5 U 711,3 5 U
1,3-87 07120/88 1 5 U IOU 5 U 5 U 5 U 1551,0 5 U
1,3-87 10/17/88 I, 110E IOU 5 U 5 U 5 U 17000 5 U
1,3-87 01/25/89 1 5 LJ IOu 5 LJ 5 U 5 U 11000 5 U
1,3-87 01,121,189 2 5 LJ IOU R 5 U 5 U 5 U 8500 J 5 U
1,3-87 06/10/89 Data not yet reqdvcd
1,3-87 06/10/89 Data not yet received
1,3-87 06/11/89 Data not yet received
1,]-87 06/11/89 INSUfflCIENI SAHplE fOR VOlAIIlE ORGANIC ANALYSIS
1,3-87 08/18/89 Ddta not yet received
41,-87 11/11,187 I, 010
1,1,-87 02122/88 1 DRY
1,1,-87 01,/18/88 2 DRY
1,1,-81 01120/88 3 DRY
1,1,-87 10/26/88 4 DRY
1,1,-81 06/10/89 ORY
1,1,-87 08/17/89 DRY
NR = Analyte not reported
J = Present below detect ion I imi t
U = Analyzed but not detected
B = Present in laboratory blank
. = HOlding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 llILLSIDE
.
Uell
NUlilber
1.1,2-Tri
chiaro
ethane
t runs-I,1-
Dichiara
Oate
Sanpled Otr.
8enzene
propene
ugll
uy/I
ug/I
43-87 01,/11/88 2
43-87 07/20/88 3
43-87 10/17/88 4
43-87 01/25/89 1
43-87 01,/21,/89 2
1,3-87 06/10/89
43-87 06/10/89
43-87 06/11/89
43-87 06/11/89
1,3-87 08/18/89
5 II
5 U
5 U
5 U
5 U
83
5 U
5 U
5 U
29 J
1,1, J
5 LJ
5 U
5 U
5 U
Outa not yet received
Oata not yet receivcd
O..ta nut yet receivcd
INSUffiCIENt SAMPLE fOR VOlATilE
Duta not yet received
ORGANIC ANALYSIS
1,1,-87 11/11,/87 " OR'(
1,4-87 02/22/88 1 ORY
1,4-87 01,/18/88 2 ORY
1,4-87 07/20/88 3 OIH
1,1,-87 1O/26/IJIl " oln
1,1,-87 IIb/lU/8,} 111< Y
1,1, -87 1111/17/89 1.11 Y
NR = Analylc not ,-cported
J = Present below detect ion t inli t
U = AnulyzcLl vut not detected
8 = P.-esent in lavoratory btanlc
2-(hloro I, -Methyl-
elhylvinyl 2-penta
ether Bromoform none 2'Hexanone
ug/t ug/I uyll ug/t
10 U 5 U 10 U 10 u
10 U 5 u 10 u 10 u
10 U 5 U 10 u 10 U
NR 5 U 10 U 10 U
NR 5 U 10 U 10 U
. = Iioiding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 HILLSIDE
1etra 1,1,2,2-
\Ie II Date chi oro 1etrachloro (hloro Ethyl lotal
NlMlber Sa~led Qtr. ethene ethane lolucne benzene benzene Styrene Xylenes
u!j/I ug/I ug/I ug/I ug/I u9/1 ug/l
I,J-87 01,/11/88 2 1,1,95 5 u 5 u 5 U 5 U 5 u 5 u
1,]-87 07/20/88 3 6970 5 U 227 5 u 5 U 5 u 5 u
1,]-87 10/17/88 I, 8100 5 U 180 B 5 u I, J 5 u 5 U
1,]-87 01/25/89 1 JI,OO J 5 U 5 U 5 U 5 U 5 u 5 U
I,J-87 01,/21,/89 2 5900 J 5 U 5 U 5 u 5 u 5 u 5 U
1,]-87 06/10/89 Data not yet received
I,J-87 06/10/89 Data not yet received
I,J-87 06/11/89 Data not yet received
1,]-87 06/11/89 INSUfflCIENI SAHPlE fOR VOlAlllE ORGANIC ANALYSIS
1,]-87 08/18/89 Data not yet received
1,1,-87 11/11,/87 I, DRY
1,1,-87 02/22/88 1 DRY
1,1,-87 01,/18/88 2 DRY
1,1,-87 07/20/88 3 DRY
1,1,-87 10/26/88 I, DRY
1,1,-87 06/10/89 DRY
1,1,-87 08/17/89 DRY
NR = Anal yte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding tio~ not o~t
N = Batch spike not in 8
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
AI.LUVIAL WELLS AT 'l'IIE 881 HILLSIDE
LIe II Date Chlo,-o Bromo Vinyl Chloro
NUllbe r Sampled Qtr. methane methane Chloride ethane
ug/I uy/I ug/I uy/I
1,9-87 11/18/87 I, DRY
1,9-87 02/17/88 1 DkY
1,9-87 04/13/88 2 Okt
1,9-87 04/13/88 2 OkY
1,9-87 07/18/88 3 Okt
1,9-87 10/21/88 I, Dkt
1,9-87 06/10/89 [Jkt
1,9-87 07/26/89 DRt
Methylene
Chloride
ug/I
Acetone
ug/l
Carbon
Disulfide
ug/l
50-87 11/18/87 I, 10 lJ lOU 10 U 10 U 5 U 1C .. II
50-37 11/18/87 I, 10 lJ 10 U 10 U 10 U 2 JB
50-III 02/17/811 1 lJkt
50-87 04/13/88 2 I'RY
50-87 01/18/88 3 OkY
50-87 10/21/88 I, nkt
50-87 06/09/89 lJkt
50-87 071 25/89 ORY
NR = Analyte not reponed
J = Present below detect ion I illii t
U = A'1.1lyzl:d Lllt not detected
8 = Present in laboratory blank
. = lIolding time not met
N = Batch spike not in 80-120X ra,
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
1,1-0 i- 1,1-0i - I /'''"S. 1,2- 1.2-0i-
~ell Oate chiaro chiaro Oichloro chiaro
Nunber San~1 ed Qt/'. ethene ethalle ethene (hlo/,o'or18 ethane
ug/I ug/I uy/I lIg/1 uyJl
1.9-87 11 /18/87 I. DkY
1,9-87 02/17/88 1 UkY
1.9.87 01,/13/88 2 DRY
1.9-87 04/13/88 2 URY
1.9-87 01/18/88 1 DRY
1.9-87 10/21/88 I. DRY
1.9-87 06/10/09 URY
1.9-87 07/26/89 DRY
2-Butanone
ug/I
'.','-Iri
chiaro
ethane
ug/I
I
50-87 11/18/87 I. 5 LJ 5 U Nil 5 U 5 u 10 u 5 u
50-87 11/18/87 I. 5 u 5 u 5 u 5 u 5 u 10 U 5 U
50-87 02/ 17 /08 1 LJRY
50-87 04/13/88 2 DRY
50-87 07/18/88 3 ORY
50-87 10/21/88 I. LJRY
50-87 06/09/09 URY
50-87 07/25/89 DRY
NR :: Analyte not reported
J :: Present below detection limit
U :: Analyzed but not detected
B :: Present in laboratory blank
. :: Holding tin~ not n~t
N :: Batch spike not in 60-120X range
E :: Es'
R :: r
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
Carbon
Uell Date Tetra Vinyl
Number SalJ~1 ed Qtr. chloride Acetate
ug/I ug/I
1,9-87 11/18/87 I, DRY
1,9-87 02/17/88 1 DRY
1,9-87 01,/13/88 2 DRY
1,9-87 01,/13/88 2 DRY
1,9-87 07/18/88 3 DRY
1,9-87 10/21/88 I, DRY
1,9-87 06/10/89 DRY
1,9-87 07/26/89 DRY
BroUlo 1,2 -0 i - C is-1, 3- DibrOlllO
dichloro chloro Dichloro Trichtoro chi oro
methane propane propene ethene lllethane
ug/t ug/t ug/I ug/t ug/t
50-87 11/18/87 I, 5 u 10 u 5 u 5 u 5 U 5 U 5 U
50-87 11/18/87 I, 5 u 10 u 5 u 5 u 5 u 5 U 5 U
50-87 02/17/88 1 DIH
50-87 01,/13/88 2 DRY
50-87 07118/88 3 DRY
50-87 10/21/88 I, DRY
50-87 06/09/89 DRY
50-87 07/25/89 DRY
NR = Analyte not reported
J = Present below detection limit
U = Analyzcd l>o.lt not dctected
8 = Present in laboratory blank
. = Holding time not lIIet
N = Batch spike not in 80-120~ range
"alue
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 IIILLSIDE
I, 1,2-1 r I I r.:lns - I, J- 2-(lIloro i,-Methyl-
\Ie II lJate chi oro Olchloro elhylvinyl 2-pcnta
Nlilluer Sillllplcd Otr- ethane BCllzene propcne ether BroUiotol1D none
u!j/I u!j/I 1I!j/! "!j/I u!j/I u~/I
- -----. - ------ -_._--
1,9-87 11/18/87 I, IJW¥
1,9-87 02/ 17 /88 1 IJW¥
1,9-87 04/ B/88 2 IJW¥
1,9-87 04/15/88 2 IJR¥
49-87 07/18/88 3 OR¥
1,9-87 10/21/88 I, IJR¥
1,9-87 06/10/89 OW¥
1,9-87 07/26/89 OW¥
2-/leKanone
u~/I
50-87 11/18/87 I, 5 u 5 u 5 u NR 5 U 10 U 10 u
50-87 11/18/87 I, 5 u 5 u 5 u 10 U 5 u 10 u 10 U
50-87 02/17/88 1 ORI
50-87 04/ B/88 2 OR¥
50-87 07/18/88 :5 OR¥
50-87 10/21/88 4 OR¥
50-87 06/U9/89 OilY
50-87 07/25/89 OR¥
NR = Analyte not reported
J = Present below detect ion I imi t
U = AnillYlcd b.1I lIot detected
B = Present in laboratory blank
. = /lolding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
~ell
Nlili/.)er
Date
SaufJled Otr.
tetra
chloro
t, 1,2,2-
tetrachloro
(hi oro
Ethyl
u!j/I
lIIJ / I
Styrcnc
U!)/I
10tal
Xylenes
u!j/l
ethcne
lIIJ/1
ethanc
u!.I/I
lolucne
u!J/1
Ll,;'"zcn~
benzcne
-- --------.- - --
--------
------
-------
1,9-87 11/ 18/87 I, OIH
1,9-87 02/17/88 1 01<1
1,9-87 04/13/88 2 Dk1
1,9-87 04/13/88 2 Ok1
1,9-87 07/18/88 1 Ok1
1,9-87 10/21/88 I, OkY
'-
1,9-87 06/10/89 01<1
1,9-87 07/26/89 OI
-------
Groundwater Volatile Organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE BBl HILLSIDE
Carbun IIIUlll0 1,2-0i - Cis-I, 3- OibroUlu
\Jell Date letra vi "'I'I ...11 ch I oro (illoro Oichlora 1f1(hloro chloro
NUliber Sampled (.It... (hi 01"1<.1" Acetate methane prupane propene ethene methane
u!J/1 lHJ/1 ug/I ug/I ug/I ug/I ug/I
- --- ----
51-87 11/23/81 I, (Jln
51-87 U2/12/88 1 OilY
51-87 01,/18/88 2 OilY
51-87 07/18/88 3 DRY
51-87 10/21/88 I, DRY
51-87 06/12/89 O"ta not yet recelvcd
51-87 08/1//89 D.,ta not yet received
52-87 11/23/87 I, 5 u IOu 5 u 5 u 5 u 5 U 5 U
52-87 11/23/87 I, 25 U 50 U 25 U 25 U 25 U 25 U 25 U
52-87 02/12/88 1 5 U 10 u 5 U 5 U 5 U 5 U 5 U
52-87 04/18/88 2 5 U 10 U 5 U 5 U 5 U 5 U 5 U
52-87 07/18/88 3 5 U IOU 5 U 5 U 5 U 5 u 5 u
52-87 10/18/88 I, 5 u IOU 5 U 5 U 5 U 2 J 5 U
52-87 01/16/89 1 5 u IOu 5 U 5 U 5 U 5 U 5 U
52-87 04/1 7/89 2 5 u lUll R 5 U 5 U 5 U 5 U 5 U
52-87 06/12/89 Data not yet reccivcd
52-87 06/12/89 Data nut yet reLl:ivcd
NR : Analyte not reported
J : Present below detection limit
U = Analyzed but not detected
B : Present in laboratory blank
. : Holding time not PK!t
N : Batch spike not in 80-120X range
E : Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 HILLSIDE
1,1.2-lri Iran:>-I,1-
~ell Date chiaro Dichiara
" NUliber Saupled Qtr. ethane Benzene propene
LJg/l ug/I LJg/1
-----
51-87 11/21/87 I, DRY
51-87 02/12/88 1 OilY
51-87 01,/18/88 2 OilY
51-87 07/18/88 1 OkY
51-87 10/21/88 I, DRY
51-87 06/12/89 Ddta not yet receil/ed
51-87 08/11,/89 Data /lot yet receil/ed
2-(11101'0
ethyll/inyl
ether
LJg/1
Bromoform
ug/I
I,-"ethyl-
2-penta
none
LJg/1
2-Hexanone
ug/I
52-87 11/21/87 I, 5 U 5 u 5 U NR 5 U 10 U 10 U
52-87 11/21/87 I, 25 U 25 U 25 u 50 u 25 u 50 U 50 U
52-87 02/12/88 1 5 U 5 u 5 U 10 U 5 U 10 U 10 u
52-8i 01,/18/88 2 5 U 5 U 5 u 10 U 5 U 10 u 10 U
52-87 07/18/88 1 5 u 5 u 5 u 10 u 5 U 10 U 10 u
52-87 10/18/88 I, 5 u 5 u 5 U 10 U 5 U 10 U 10 U
52-87 01/16/89 1 5 u 5 II 5 U NR 5 U 10 U 10 u
52-87 01,/17/89 2 5 u 5 u 5 U NR 5 U 10 U 10 U
52-87 06/12189 Oala nol yet I-eecil/cd
52-87 06/12189 Data /lot yet reeeil/cd
NR = Anal yte not reported
J = Present below detect ion I imi t
U = Analyzed but not detected
B = Present in laboratory blank
. = lIolding time not met
N = Batch spike not in 80-120X range
E = Estimated I/alue
-------
Groundwater Volat
organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
Tell a 1, 1,2,2-
LIe II Vate chloro Tetrachloro
NUlber Sall{Jled atr. ethene elhane Toluelle
uy/I uy/I uy/I
---
51-87 11/23/87 4 ORY
Chi oro Ethyl lotal
benzene benzene Slyrene Xylenes
uy/I ug/I ug/l ug/I
-------
51-87 02/12/88 1 ORY
51-87 04/18/88 2 ORY
51-87 07/18/88 3 ORY
51-87 10/21/88 4 ORY
51-87 06/12/89 Oala lIot yet received
51-87 08/14/89 Oilla not yel received
52-87 11/?3/87 4 5 U ~ U 5 U 5 u 5 u 5 U 5 u
52-87 11/21/87 4 25 U 25 U 25 U 25 u 25 u 25 U 25 U
52-87 02/12/88 1 5 U 5 II 5 U 5 U 5 U 5 U 5 U
52-87 04/18/88 2 2 J 5 U 5 II 5 U 5 u 5 U 5 U
52-87 07/18/88 1 5 U 5 u 5 U 5 u 5 u 5 U 5 u
52-87 10/18/88 4 2 J 5 u 0.9 JII 5 U 5 u 5 U 5 U
52-87 01/16/89 1 2 J ~ lJ 5 u 5 U 5 lJ 5 u 5 u
52-87 04/17/89 2 5 u 5 II 5 II 5 u 5 U 5 II 5 II
52-87 06/12/89 Dilla 1101 yel receiveJ
52-87 06/12/89 Dala nOI yet received
NR = Analyte not reported
J = Present below detection limit
II = AnalYled but not detected
8 = Present in laboratory blank
. = Holding tin~ not met
N = 8atch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile .organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
\Jell Date Chloro 0 f(JllIO Vinyl Chloro Melhylene Carbon
Nuuber Sanipl ed CHr - methanc mcthanc Chloride elhillle Chloride Acelone Disulfide
119/1 119/1 U9/ I uy/I 119/1 ug/I ug/I
---
52-87 0!!/11,/89 Oal a not yel rcccivcd
53-87 11 /18/87 I, lOU 10 u 10 lJ IOU 21 10 U 5 U
53-87 11 /1!!/87 I, lOu IOU 10 U 10 lJ 2 JB 9 JB 5 U
53-8/ 02/10/!!8 1 OkY
53-87 04/11/88 2 IOu 10 u 10 U 10 U 5 U 10 U 5 U
53-87 07/18/88 3 OkY
53-87 10/21/88 I, OilY
51-87 06/08/89 Oala not yct receivcd
51-87 07/25/89 Data not yet received
51,-87 11/18/87 I, lOu 10 U 10 U 10 U 5 U 10 U 5 U
51,-87 11/18/87 4 lOu IOU 10 U 10 U 5 U 10 U 5 U
51,-87 11/18/87 4 lOu IOu 10 U 10 U 2 JB 13B 5 U
51,-87 02/10/88 1 OilY
54 -!!7 04/11/88 2 IOu 10 II 10 U IOU 5 U 10 U 5 U
54-87 07/ 18/!!8 3 OilY
NR = Analyte no I repurted
J = Present beluw detection limit
U = Analyzcd ~Jt not detectcd
8 = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 IIILLSIDE
1,1-0 i - I, 1-0i - 1 r .JI\~ - 1 , 2 - 1,2-0i - .
IJc II Date chiaro chiaro Dichloro chiaro
NUlver Salllpi ed Otr- ethene ethane ethene Chloroform ethane
ug/I ug!l ug/l uglt ug/l
52-87 08111,189 Data lIot yet received
2-Butanone
ug!l
1, I, 1-1 r i
chiaro
ethllne
ug/I
51-87 11118/87 I, 21 5 U NR . 5 u 5 u 10 U 18
51-87 11118/87 4 5 LJ 5 u 5 u 5 u 5 u 10 U 2 J
51-87 021 10/88 1 DRY
51-87 01,111/88 2 5 u 5 U NR 5 U 5 u 10 U 5 u
51-87 07/18/88 3 DRY
51-87 10/21/88 I, DRY
51-87 06/08/89 Data nol yet received
51-87 07125189 Data not yet received
51,-87 11118/87 I, 5 u 5 U NR 8 5 u 10 U 5 u
51,-87 11/18/87 I, 5 u 5 U NR 5 U 5 u 10 U 5 u
51,-87 11/18/87 I, 5 u 5 u 5 u 5 u 5 u 10 U 2 J
51,-87 02/10/88 1 DRY
51,-87 01,/11/88 2 5 u 5 U NR 5 U 5 u 10 U 5 U
51,-87 07/18/88 1 DRY
NR = Analyte not reported
J = Present below detection limit
U = Analyzcd vul not detected
B = Present In lavoratory blank
* = Holding time not met
N = Balch spike not in 80-120% range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 IIILLSIDE
CarLuli BI uiliO I, 2-0i - Cis-I, 1. Dibroillo
Yell Oate letra Vinyl dlchloro chloro Oichloro Irichloro chioro
Number Sampled Otr. chloride Acetate mdhalle propane propene ethene methane
119/1 u9/1 IIU/I uy/l U9/1 119/1 ug/l
----- ---
52-87 01J/11,/89 0..1.. nol yel received
51-87 11/18/87 4 6 lUU 5 U 5 U 5 u 21 5 U
51-87 11/ 18/87 I, 5 U IOU 5 U 5 u 5 u 5 u 5 U
51-87 02/10/88 1 OI
-------
Groundwater Volatile organic Results
Fpr Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
I, 1,2- I r i Irans-1,1-
\jell Date chloro Dichloro
Nunber Sanpled Qtr. ethane Benzene propt;ne
ug/I ug/I ug/I
52-87 08/11,/89 Data not yet received
2-(hloro
ethylvinyl
ether
I,-"ethyl-
2 - penta
ug/I
Z-Hexanone
ug/I
ug/I
Bromoform
ug/I
none
51-87 11/18/87 I, 5 II 5 u 5 U NR 5 U 10 U 10 u
')1-87 11/18/87 " 5 u 5 u 5 u 10 U 5 u 10 U 10 u
51-87 02/10/88 1 IJIjY
51-87 01,/11/88 Z 5 u 5 u ') U 10 U 5 U 10 U 10 U
53-87 07/18/88 3 DRY
')1-87 10/21/88 " DRY
51-87 06/P8/89 Data not yet received
53-87 07/25/89 Data not yet received
51,-87 11/18/87 I, 5 u ') u 5 U NR 5 U 10 U 10 U
51,-87 11/18/87 " 5 u ') U 5 U NR 5 U 10 U 10 u'
51,-87 11118/87 " 5 u 5 U 5 U 10 U 5 U 10 U 10 U
51,-87 02/10/88 1 OIjY
51,-87 01,/11/88 2 5 u 5 U 5 U 10 U ') U 10 U 10 U
51,-87 07/18/88 1 DRY
NR = Analyte not reported
J = Present below detect ion I imi t
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-120X range
. E = Est imated val ue
-------
Groundwater Volatile Organic Results-'
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT TilE 881 IIILLSIDE
Tetra I, 1,2,2 -
Lie II Date chi oro letrachloro Chi oro Ethyl
Nurber Sampled Qtr. ethene ethane Toluene bcnz ene benzene
ug/l ug/l ug/l ug/l ug/l
52-87 08/11,189 O..ta lIot yet received
Styrene
ug/l
lotal
Xylene5
ug/l
51-87 11118/87 I, 5 lJ 5 u 11 5 U 5 u 5 U 5 U
51-87 11/18/87 I, 1 J 5 u 5 u 5 U 5 U 5 u 5 U
53-87 02110/88 1 DRY
51-87 01,111/88 2 3 J 5 u 5 U 5 U 5 u 5 u 5 U
51-87 07118/88 :5 DRY
51-87 10/21/88 I, DRY
51-87 06/08/89 Data not yet re.ceived
51-87 07/25/89 Data lIot yet received
51,-87 11118187 I, 5 lJ 5 u 5 u 5 u 5 u 5 U 5'
51,-87 11118/87 I, 1J 5 U 5 u 5 u 5 u 5 u ~
51,-87 11118/87 I, I, J 5 u 5 U 5 u 5 U 5 U
51,-87 02110/88 1 ORY
51,-87 01,/11/88 2 5 lJ 5 u 5 u 5 u 5 u 5 U
51,-87 07/18/88 3 DRY
NR " Anal yte not reported
J" Present below detection limit
U " Analyzed but not detected
8 " Present in laboratory blank
. " Holding tin~ not met
N " Batch 5pike not in 80-120X range
E " E5t
R " Df
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
~ell Date Chloro 8roHlo Vinyl Chloro Methylene Carbon
NUlver Sampled QIr. meth"ne methane Ch I 0'- I de ethane Chloride Acetone Disutfide
lJg/1 LJ9/1 LJ9/1 LJ9/1 LJg/l ug/l ug/l
54-87 10/21/88 I, DRY
54-87 06/08/89 O;,la not yet received
54-87 07/26/89 Data not yet received
NR = Analyte not reported
J = Present below detection limit
. = Holding time not met
N = 8atch spike not in 80-120X range
E = Est ima'
R = Data
U = Analyzed but not detected
8 = Present in laboratory blank
.dtion.
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
,;,
1,1-0 i - 1,1-0 i- Irans-1,2-
Uell Date chloro chloro Dichloro
Nuuber Sampled Qtr. ethene ethane ethene
ug/l ug/l ug/l
51,-87 10/21/88 I, DRY
51,-87 06/08/89 Data not yet received
~1,-87 07/26/89 Data not yet received
Chlorolorm
ug/l
1,2-Di -
chloro
ethane
ug/l
2-8utanone
ug/l
1.1.1-1ri
chi oro
ethane
ug/l
NR = Analyte not reported
J = Present below detect i on I ilili t
U = Analyzed bllt not detected
o = Present In laboratory blank
* = Holding time not n~t
N = Oatch spike not in 80-1204 range
E = Estimated valu.
R = Data rejected
-------
Groundwater Volati
Organic Results
For Wells at Rockwell
ALLUVIAL WELLS AT TilE 881 HILLSIDE
Carbon
Lie II Date Tetra
NUI,oer Sampl ed Qtr. chloride
ug/l
54-87 10/21/88 4
54-87 06/08/89
54-87 07/26/89
OHY
Vinyl
Acetate
ug/l
Dill" lIut yet reee I vuJ
Uata not yet ro::ceiv"J
NR = Analytc not reported
J = Present below detection limit
BI-OIiIO
dichlora
methane
IIg/1
U = Analyzed but not detected
B = Present in laboratory blank
(Rocky Flats)
1.2-0i -
chiaro
prop,me
IIg/1
Ci;;-I,1- Dibralllo
Dichiara Trichloro chiaro
propene ethene methane
ug/I ug/l ug/I
. = "aiding tin~ not met
N = Batch spike not in 80-120~ range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
I, I, 2-1 r i Irans-I,3- 2-(hloro
Yell Date chloro Dichloro ethyl vinyl
NUliber San-pl ed Qtr. ethane 8enzene propene ether 8 romo f o rill
ug/I ug/l ug/I ug/l ug/I
51,-87 10/21/88 I, DRY
51,-87 06/08/89 Oata not yet received
51,-87 07/26/89 Data not yet received
NR = Analyte not reported
J = Present below detect ion I illli t
U = Analyzed but not detected
8 = Present in laboratory blank
. = Holding time not met
N = 8atch spike not in 80-1204
I,-Hethyl-
2-penta
none
ug/l
2-Hellanone
ug/l
..ted value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
letra I, 1,2,2-
lJe II Date chloro letrachloro
NUllber Sallipl ed Qtr. ethene ethane loillene
U9/1 uy/I 119/1
54-87 10/21/88 4 DRY
54-87 06/08/89 Data not yet received
51,-87 07/26/89 Data not yet received
Chi oro
benzene
Ethyl
benzene
119/1
u9ft
Styrene
u9/1
lotal
IIvlenes
U9/1
NR = Analyte not reported
J = Present below detect ion I imi t
U = Analyzed but not detected
8 = Present In laboratory bl~.
. = HOlding time not met
N = 8atch spike nol in 80-120X range
E = Estimated value
-------
ALLUVIAL WELLS AT THE 881 HILLSIDE
DISSOLVED METAL RESULTS
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
RO':-:-~Y FLATS PLANT. GOLDEN. COLORADO
-------
Groundwater olved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS A'f 'fHE 881 HILLSIDE
~eU Date Ah.ninuA Antimony Arsenic Bar i un Beryll i UI CamiLlI CalclLo
Nurber Sanvl ed Qtr. (AI>. diss. (Sb), diss. (As). diss. (8a). diss. (Be), diss. (Cd). dill. (Ca), diu.
1119/1 019/ I 109/ I 109/ I 019/1 109/I mg/I
-
09,74 03/09/87 1 0.0290 U 0.0600 U 0.01 U 0.081,0 0.005 U 0.005 U 263.1,966
09,74 01,/09/87'1 0.0321 0.0600 U 0.01 U 0.1371 0.005 U 0.005 U 199.7978
09-74 OS/21/87 2 0.0290 U 0.06 U 0.01 U 0.0693 0.005 U 0.005 U 211.0518
09,74 07102/87 3 0.01,81 0.02 U 0.008 J 0.0918 0.005 U 0.001 U 262.271,5
09-74 08/11/87 3 DRY
09,74 10/20/87 I, 0.0515 0.006 J 0.005 U 0.0896 0.001 J 0.001 U 218.1526
09,74 10/28/87 I, INSUffiCIENT SAMPLE fOR HElAlS ANALYSIS'
09-74 11/17187 I, 0.0690 0.02 U 0.008 0.0991, 0.005 U 0.0013 206.2095
09'14 02/25/88 1 0.0290 U 0.02 U 0.005 0.0701 0.005 U 0.001 U 168.2300
09-14 04/14/88 2 0.0290 U 0.031,0 U 0.003 J 0.0578 0.0010 U 0.0050 U 170.1388
09,74 04/15/88 2 0.0316 0.031,0 U 0.003 J 0.0564 0.0010 U 0.0050 U 169.9513
09-14 01/20/88 3 0.0290 u. 0.0641 0.001, J 0 . 0684 0.0010 U 0.0050 U 185.6921
09-14 10/25/88 4 0.0387 0.0707 0.003 J 0.081,9 0.0010 U 0.0050 U 223.2121,
10'14 OS/21/87 2 0.01,69 0.06 U 0.01 U 0.051,5 0.005 U 0.005 U 295.0586
10.14 01/01/87 3 DRY
10-14 10/20/87 4 INSUffiCIENT SAMPLE fOR HETAlS ANALYSIS
10-74 10/20/87 I, INSUFFICIENT SAHPlE FOR HETAlS ANALYSIS
10.74 02/25/88 1 0.0290 U 0.02 U 0.005 U 0.01,51 0.005 U 0.001 U 221.8247
10.74 07/19/88 3 0.0290 U 0.0671, 0.005 U 0.01,36 0.0010 U 0.0050 U 230.7856
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
* = Holding time not met
N = Batch spike not in 80, 120X range
E = Estimated value
l
....- I.,'."..
:" . . . ....-::. ;...... ...,:,'. ,~::..~,
""-'---:""':'~4
,
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS A'r 'l'HE 881 HILLSIDE
\Ie Il Date Ces i UD Chromiull Cabal t Copper Iron Lead lithilJD
NUlber Sall"pl ed Qtr. (Cs), diss. (Cr), diss. (Co), diss. (Cu), diss. (Fe), dilis. (Pb), diu. (lO, diu.
1119/1 "Pil/l "~/I DI9/1 DIg/I l119/l mg/l
---- __0-.._.- --- --- ------'-
09.74 01/09/87 1 0.2 U 0.0100 U 0.0220 U 0.0061 U 0.0069 U 0.005 U NR
09-74 04/09/87 1 0.2 U 0.0100 U 0.0220 U 0.0061 U 0.0069 U 0.005 U NR
09-74 OS/21/87 2 0.2 U 0.0100 U 0.0220 U 0.0061 U 0.0069 U 0.016 NR
09.74 07/02/87 1 0.02 U 0.0100 U 0.0220 U 0.0184 0.0069 U 0.005 U NR
09-74 06/11/87 1 DRY
09.74 10/20/67 4 0.02 U 0.0192 0.0220 U 0.0144 0.0447 0.005 U 0.6
09.74 10/28/87 4 INSUffiCIENT SAMPLE fOR MEIALS ANALYSIS
09-74 11/11/87 4 0.02 U 0.0119 0.0220 U 0.0165 0.0614 0.0001 J 0.1
09-74 02/25/86 1 0.02 U 0.0100 U 0.0220 U 0.0063 U 0.0069 U 0.005 U 0.44
09.74 04/14/86 2 0.02 U 0.0101 0.0220 U 0.0063 U 0.0069 U 0.005 U 0.44
09-74 04/15/86 2 0.02 U 0.0100 U 0.0220 U 0.0063 U 0.0063 U 0.005 U 0.45
09.74 07/20/88 3 0.020 U 0.0100 U 0.0220 U 0.0063 U 0.0252 0.005 U NR
09-14 10/25/88 4 0.02 U 0.0100 U 0.0220 U 0.0063 U 0.0173 0.005 U NR
10.74 OS/21/81 2 0.2 U 0.0100 U 0.0200 U 0.0063 U 0.0069 U 0.006 NR
10-14 07/01/87 3 DRY
10.74 10/20/87 4 INSUfF ICIENT SAMPLE fOR METALS ANALYSIS
10.74 10/20/87 4 INSUffiCIENT SAMPLE fOR MEIALS ANALYSIS
10-74 02/25/88 1 0.02 U 0.0116 0.0220 U 0.0063 U 0.0069 U 0.005 U 0.1 U
10-74 07119/88 3 0.020 U 0.0100 U 0.0220 U 0.0063 U 0.0229 0.005 U NR
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not In 80, 120X range
E = Estimated value
\
-------
Groundwater olveu Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS A'l' '}'HE 881 HILLSIDE
Uell Date Hagnesilm Hanganese Hercury HolybdeOlJ1l Nickei Potalllil8 SeienillD
NUliber Sanpied Qtr. (Hg), diss. (Hn), diss. (Hg), diss. (Ho), diss. (Ni), diss. (I( ), dill. (Se), diu.
1119 Ii nl9/ i Dog / i 1119 / i mg/i 1119 / i mg/i
--- - ---- ----- -- +-_.-
09-74 03/09/87 1 55.3301 0.0051 U 0.0002 U 0.0220 U 0.0370 U 5.0 U 0.95
09,74 04/09/87 1 47.0034 0.0075 0.0002 U 0.0220 U 0.0370 U 5.0 U 0.46
09,74 OS/21/87 2 1010.8732 0.01310 0.0002 U 0.0220 U 0.0370 U 5.0 U 0.39
09,74 07/02/87 3 56. 1795 0.0261 0.0002 U 0.0220 U 0.0370 U 2.2 0.9
09-74 08/11/87 3 DRY
09,74 10/20/87 4 55.1101,3 0.0391, 0.0002 U 0.0220 U 0.0370 U 1.9 0.8
09,74 10/28/87 4 INSUfflCIENJ SAMPLE fOR HErALS ANALYSiS
09,74 11/17/87 4 1,1,.2873 0.011,5 0.0002 U 0.0220 U 0.0370 U 2.1 0.09
09,74 02/25/88 1 :n. 0280 0.0051 U 0.0002 U 0.0220 U 0.0370 U 1.1 0.65
09,74 04/14/88 2 1,0.3688 0.0051 U 0.0002 U 0.0220 U 0.0370 U 1.0 0.568
09-74 010/15/88 2 100.8359 0.0051 U 0.0002 U 0.0220 U 0.0370 U 1.0 0.595
09-74 07/20/88 3 37.0310 0.0051 U 0.0002 U 0.0220 U 0.0370 U 1.0 0.48
09,74 10/25/88 4 50.67810 0.0107 0.0002 U 0.0220 U 0.0370 U 1.1 NR
10-74 OS/21/87 2 73.27108 0.0051 U 0.ouU2 U 0.0252 0.0370 U 5.0 U 2.1
10-74 07/01/87 3 DRY
10.74 10/20/87 4 INSUfflCIENJ SAMPLE fOR HETALS ANALYSiS
10-74 10/20/87 4 INSUfflCIENr SAHPLE fOR HETALS ANALYSIS
10.74 02/25/88 1 55.9821 0.0051 U 0.0002 U 0.0220 U 0.0370 U 0.8 1.94
10.74 07/19/88 3 510.5000 0.0051 U 0.0002 U 0.0220 U 0.0370 U 0.5 2.24
NR = Anaiyte not reported
J = Present below detect iOIl I imi t
U = Analyzed but not detected
B = Present in laboratory blank
* = Holding time not met
N = Batch spike not in 80.120X range
-------
" Groundwater Dissolved Metals Results
For Wells at Hockwell (Rocky Flats)
ALLUVIAL WELLS AT 'l'HE 881 HILLSIDE
Uell Date Silver SodiUII Jin Stront iun Jhall iUII Vanadh... linc
NUllbe r Sanpl ed Qtr. (Ag). diss. (Na), diss. (Sn), diss. (Sr), diss. (II), diss. (V), diu. (In), diss.
1119/1 IIIg/1 1119 / I 1119/1 1119/1 1liii/I mg/t
- --
09-74 03/09/87 1 0.0094 181.9774 NR 1 .9806 0.01 U 0.0240 U 0.06
09-74 04/09/87 1 0.0076 U 142.7789 NR 1.6165 0.01 U 0.0240 U 0.08
09-74 OS/21/87 2 0.0076 U 152.1861 NR 1.3926 0.01 U 0.0240 U 0.0298
09-74 07/02/87 3 0.0076 U 187.4977 NR 2.0519 0.01 U 0.0240 U 0.0330
09-74 08/11/87 3 DRY
09-74 10/20/87 4 0.0076 U 158.'.178 NR 1.8471 0.01 U 0.0240 U 0.0270
09.74 10/28/87 4 INSLJff ICIENJ SAHPLE fOR HErALS ANALYSIS
09.74 11/17/87 4 0.0076 U 164.4B5 NR 1.6738 0.01 U 0.0240 U 0.0384
09.74 02/25/88 1 0.0076 U 169.7297 NR 1.2577 0.01 U 0.0240 U 0.0200 U
09.74 04/14/88 2 0.0076 U 151.7531 NR 1. 2361 0.01 U 0.0360 U 0.0200 U
09.74 04/15/88 2 0.0076 U 152.4721 NR 1.2363 0.01 0.0360 U 0.0200 U
09.74 07/20/88 3 0.0076 U 171.351,1 NR 1.31,06 0.010 U 0.0360 U 0.021,4
09-74 10/25/88 4 0.0076 U 17].4861 NR 1.9120 0.01 U 0.0360 U 0.0263
10.74 OS/21/87 2 0.0076 U 204.1915 NR 1.9586 0.01 U 0.0240 U 0.0515
10.74 07/01/87 3 DRY
10.74 10/20/87 4 INSufflCIENr SAHPlE FOR HErAlS ANALYSIS
10.74 10/20/87 I, INSLJfflCIENr SAHPlE fOR HErAlS ANALYSIS
10.71, 02/25/88 1 0.0076 U 178.211,9 NR 1 . 7584 0.01 U 0.0240 U 0.0851
10-74 07/19/88 ] 0.0076 U 184.1220 NR 1. 7378 0.010 U 0.0360 U 0.1618
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in aO.120X range
-------
Groundwater
olved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS AT 'fHE 881 HILLSIDE
lie II Date Alunimm Ant imony Arsenic Bariua Beryll iuu CadaIL.. Calclua
NUliber Sanpl ed Qtr. (AI), diss. (Sb), diss. (As), diss. (Ba), diss. (Be), diu. (Cd), dlaa. (Ca), diss.
1119/1 mg/I 109/1 109/1 ~/I mg/t 1119/1
10-74 10/25/88 I, 0.0385 0.0798 0.005 U 0.0477 0.0010 U 0.0050 U 220.1902
01-87
10/12/87 I,
OilY
01-87
01-87
01.87
01.87
01.87
02/10/88 1
04/11/88 1
04/11/88 2
07/20/88 3
10/26/88 I,
INSUffiCIENT SAMPLE fOR METALS ANALYSIS
OilY
OilY
INSUffiCIENT SAMPLE fOR HETALS ANALYSIS
INSUffiCIENT SAMPLE fOR HETALS ANALYSIS
04.87 OS/20/87 1 Nil 0.06 U 0.01 U Nil Nil 0.005 U Nil
04-87 OS/26/87 2 INSUffiCIENT SAMPLE fOIl HETALS ANALYSIS
04-87 07/09/87 3 0.0417 0.02 U 0.005 U 0.0941 0.005 U 0.0005 J 355.9960
04.87 10/14/87 I, 0.0712 0.02 U 0.005 U 0.0594 0.001 J 0.001 U 235.0496
04-87 10/14/87 4 INSUffiCIENT SAHPLE fOIl HETALS ANALYSIS
04.87 02/15/88' 1 0.0290 U 0.02 U 0.003 J 0.0579 0.005 U 0.001 229.9842
04.87 04/13/88 2 0.01,31 0.031,0 U 0.005 U 0.0382 0.0010 U 0.0050 U 244.3146
04.87 07/14/88 3 0.0290 U 0.0751 0.005 U 0.0403 0.0010 U 0.0050 U 198.5473
04.87 10/20/88 4 0.0562 0.0636 0.005 U 0.0546 0.0010 U 0.0050 U 121.7639
Nil = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holdl"8 t IIIIe not lllet
N .. Batch spike not In 80, 120X range
E .. Eat I mated value
.
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS AT 'I'IIE 881 HILLSIDE
Uell Date Cesilll1 Chrornilln Cobalt Copper Iron Lead Li thhn
Nwber Sillipled Qtr. (Cs), diss. (Cr), diss. (Co), diss. (Cu), diu. (Fe), diss. (Pb), dill. (lO, diu.
mg/l mg/l mg/l mg/l mg/l IIIQII Dlg/l
---
10.14 10/25/88 " NR 0.0100 U 0.0220 U 0.0063 U 0.0069 U NR NR
01.81 10/1l/81 " DRY
01-81 0l/10/88 1 INSUFFICIENT SAMPLE FOR HETALS ANALYSIS
01-81 04/11/88 1 DRY
01-81 04/11/88 2 DRY
01-81 01/20188 3 INSUFFICIENT SAHPLE fOR HETALS ANALYSIS
01-81 10/26/88 " INSUfFICIENT SAMPLE fOR HETALS ANALYSIS
04.81 OS/20/81 1 0.2 U NR NR NR NR 0.005 U 0.02
04-81 05/26/81 2 INSUff ICIENT SAHPLE fOR HETALS ANALYSIS
04-87 01/09/81 3 0.02 U 0.0100 U 0.0220 U 0.0190 0.0069 U 0.005 U NR
04-81 10/14/81 " 0.04 J 0.0782 0.0220 U 0.0063 U 0.1119 0.005 U 0.03 J
04-81 10/14/81 " INSUffiCIENT SAMPLE FOR HETAlS ANALYSIS
04-81 02115/88 1 0.02 U 0.0114 0.0220 U 0.0069 0.0069 U 0.005 U 0.1 U
04-81 04/13/88 2 0.02 U 0.0111 0.0220 U 0.0063 U 0.0238 0.005 U 0.1 U
04-81 01/14/88 3 0.020 U 0.0111 0.0220 U 0.0063'U 0.0305 0.005 U NR
04-81 10/20/88 4 0.02 U 0.0100 U 0.0220 U 0.0251 0.0485 0.005 U HR,
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-120X range
E = Estimated value
I
~:-...... .
. .- (J'~' ". v-.-' ":t-!'=":"",,,'7"J.~ .4:........- t1-'
." .. '..)
.. '06£ :'~"~'. b~"-'-- ....
".' _. ---_.-
-------
Groundwater ()....i./i.;solved Metals Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
lie II Date Hagnes iuo Manganese Mercury Molybderun Nickel Potassh.. SeleniUl1
NUlber Saopl ed Qtr. (Mg). diss. (Mn). diss. (Hg). diss. (Mo). diss. (Ni). diss. (IC ). dill. (Se). diss.
019/1 mg/l ffi!:j/l 1119/1 1119/1 1119/1 1119/1
- -----
10.74 10/25/88 4 56.0077 0.0051 U 0.0002 U 0.0220 U 0.0370 U 1.2 3.2
01-87 10/12/87 4 DRY
01.87 02/10/88 1 INSUfflCIENI SAHPlE fOR MEIAlS ANALYSIS
01-87 04/11/88 1 DRY
01.87 04/11/88 2 DRY
01-87 07/20/88 3 INSUfflCIENI SAHPlE fOR HEIAlS ANALYSIS
01.87 10/26/88 4 INSUfflCIENI SAHPlE fOR MEIAlS ANALYSIS
04-87 OS/20/87 1 NR NR 0.0002 U NR NR 5.0 U 0.193
01,,87 OS/26/87 2 INSUfflCIENI SAHPlE fOR HEIAlS ANALYSIS
04-87 07/09/87 3 69.8018 0.5871 0.0002 U 0.0220 U 0.2536 .23
04,87 10/11,187 4 49.5140 0.9586 0.0002 U 0.0220 U 0.3331,
04,87 10/14/87 4 INSUfflCIENI SAHPlE fOR MEIAlS ANALYSIS
04-87 02/15/88 1 52.0792 0.1658 0.0002 U 0.0220 U 0.2025
04,87 04/13/88 2 61.3284 0.21,00 0.0002 U 0.0220 U 0.1800
04-87 07/14/88 3 38.8750 0.7619 0.00028 U 0.0220 U 0.4037
04-87 10/20/88 4 25.6060 0.7016 0.0002 U 0.0220 U 0.3093
NR ; Analyte not reported
J ; Present below detection limit
U ; Analyzed but not detected
B ; Present in laboratory blank
. ; Holding time not met
N ; Batch spike not in 80, 120X r,
.(ed value
lJ,i.'~'~~;""'!<,"4."';'fi"l'A"~.'JI:~_Jtf.':!;-""K'" '=-<,",.i'\.u'l"-~-
.. !.~.
.-., .".=---:l~),""A.J LJ:l~-- -...;--- ---.~_.---- ""
r,---'
. -4.-_-;I'.~..,.--'::~~~~~='~
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
Yell Date Si Iver SodiljQ J in Strootiw thall ilm Vanadil.. Zinc
Nljjber SlIII4>led Qtr. (A9). diss. (Na). diss. (Sn). diss. (Sr). diss. (11), diss. (V), diu. (In), diss.
my/I 1119 / I 019/1 1119 / I 1119 / I 1119/1 1119/1
---- ----
10.710 10/25/88 10 0.0076 U 185.9507 Nil 1.8795 Nil 0.0360 U 0.2376
01-87 10/12/87 10 OilY
01-87 02/10/88 1 INSUfflCIENJ SAMPLE fOil MEJAlS ANALYSIS
01-87 010/11/88 1 DRY
01.87 04/11/88 2 OilY
01-87 07/20/88 3 INSUffiCIENt SAMPLE fOil MEJAlS ANALYSIS
01-87 10/26/88 4 INSUffiCIENt SAMPLE fOR MEJAlS ANALYSIS
010-87 OS/20/87 1 Nil Nil Nil Nil 0.01 U Nil 0.16
04-87 OS/26/87 2 INSUff ICIENt SAMPLE fOR MEtALS ANALYSIS
04-87 07/09/87 3 0.0076 U 341. 7467 Nil 2.10291 0.01 U 0.0302 0.0780
04-87 10/110/87 10 0.0076 U 281.9918 NR 1.6890 0.01 U 0.02100 U 0.03110
04-87 10/14/87 4 INSufflCIENJ SAMPLE fOil MEIAlS ANALYSIS
04-87 02/15/88 1 0.0076 U 265.3521 NR 1.6772 0.01 U 0.02100 U 0.0359
04-87 04/13/88 2 0.0076 U 258.3427 Nil 1.5743 0.01 U 0.0360 U 0.0426 U
04-87 07/14/88 3 0.0076 U 239.5536 Nil 1.3338 0.010 U 0.0360 U 0.0496
04-87 10/20/88 4 0.0076N U 202.3517 Nil 0.91810 0.01 U 0.0360 U 0.0285
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in aO.120X range
-------
Groundwater
olved Metals Results
ALLUVIAL WELLS A'l' 'rUE 881 HILLSIDE
For Wells at Rockwell
(Rocky Flats)
Uett Date Aluninun Ant imony Arsenic
Nwiber Saapled Qtr. (AI), diss. (Sb), diss. (As), diss.
nl9/1 "19/1 1119/1
06-87 07/30/87 3 0.0290 U 0.02 U 0.005 U
06-87 08/25/87 3 INSUfflClfNJ SAHPlf fOR HfiAlS ANALYSIS
06-87 10/14/87 4 INSUfflCIENJ SAMPLE fOR HEIAlS ANALYSIS
06-87 10/14/87 4 I NSUff ICIENJ SAMPLE fOR HflAlS ANALYSIS
06-87 02/17/88 1 0.03010 0.02 U 0.005 U
06-87 04/13/88 2 INSUff ICIENI SAMPlE fOR HEIAlS ANALYSIS.
06-87 01114/88 3 INSUfflClfNI SAHPlE fOR HEIAlS ANALYSIS
06-87 10/26/88 4 DRY GI
Bar i UII Berytt iUli CacblUi CalclUil
(Ba), di SII. (Be), diu. (Cd), dill. (Ca), dill.
1119/1 1119/1 ~" 1liii/I
0.1634 0 . 005 U 0.001 U 148.9176
O. 1047
0.005 U
0.001 U
156.2052
4]-87 12118/87 I, 0.0765 0.02 U 0.009 0.1129 0.003 J 0.001 U 157.5883
43-87 02/22/88 1 0.0290 U 0_02 U 0.003 J 0.0898 0.005 U 0.001 U 168.2474
4]-87 04/11/88 2 0.0367 0.0340 U 0.005 U 0.0581 0.0010 U 0.0050 U 158.8623
4]-87 07/20/88 3 0.0290 U 0.01096 0.005 U 0.0733 0.0010 U 0.0050 U 177.2322
4]-87 10/17/88 I, INSUfflCIENJ SAHPlE fOR HflAlS ANALYSIS
44-87
11/14/87 4
DRY
44-87
02122188 1
DRY
NR '" Analyte not reported
J '" Present below detection limit
U '" Analyzed but not detected
B '" Present in laboratory blank
. '" Holding time not met
N '" Batch spike not in 80'120X range
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS A'r TilE 881 HILLSIDE
LJ.: II Date [cs ilill Chrollli..11 [ubalt Copper Iron lead l ithillU
NIIII~ ,,~r Silll~)1 c,1 at r. (C~), di ss. «(I ). dl';s. (Co). diss. (Cu). di ss. (Fe). diss. (Pb). diss. (l i). diss.
11i~/1 "'911 "'9/1 "'9/1 "'9/1 mg/t 1119/1
-- . - - ---- -- --- ------~- _. ---- -- - --- ------- -- ----
06-81 01/1U/87 J 0.02 U O.UIUO lJ 0.0220 lJ 0.0078 0.17J9 O.OOS U NR
06.81 08/2~/87 J IUSlJff ICiENI SAMPlE IlJl/MllAIS ANAlYSIS
0687 10/11,187 I, INSlJlf ICIENI SAMPlE 1011 ME IAI S ANALYSIS
06-Ll7 111/11,187 I, I NSlJff IClENf SAMPLE lOll MflAIS ANALYSIS
06. Ll7 02111188 I 0.02 U O. U 1110 lJ 0.022U U 0.0081 0.0069 U 0 . OOS U 0.06 J
U6-87 01,1 H/88 2 IJjSllff I C I EN I SAMPlE fOil MEIAIS ANALYSIS
06 87 U7111,188 3 INSllff ICIENI SAI1I'l E fOil MliAIS ANALYS I S
U6 117 111/26/88 I, DRY
I,J-87 12/18/87 I, 0.02 lJ O.UIU 0.0220 U 0.OJ64 0.OS26 O.OOS U 0.1 U
4J-81 02/22/88 I 0.02 U 0 . U 100 u 0.0220 U 0.951S 0.0181 0.003 J 0.05 J
43-87 01,111/88 2 0.U2 U 0 . 0 100 lJ 0.0220 U 0.90s} 0.0113 O.OOS U 0.05 J
43,87 07/20/88 J 0.020 U 0.U100 U 0.0220 U 0.1612 0.0171 0.005 U NR
I,J. 87 10117/88 I, INSI1ffICIENI SAMPLE fOil MEt Al S ANAlYSIS
1,1,-87
11/11,187 I,
ORY
1,1, ,87
02/22/LlII
DRY
NR = Analyte Ilot rq)OI ted
J = Present below detcct ion 111111 t
U = An.IlYlcd but nut detected
o = Plcsent in laboratory blank
. = lIoldillg time not met
N = 8atch spike not in 80-120~ range
E : Estimated value
R : Data rejected during validation.
l
. ---"-.'C'---"""-"'."'--'.
~~..:::u.-
-------
Groundwater Di
ved Metals Results
For Wells at Rockwell
ALLUVIAL WELLS A'l' THE 881 HILLSIDE
\Ie II Date Hagnes iun Hanganese Hercury
NUlber Sanipl ed Qtr. (Hg), diss. (Hn), diss. (Hg), diss.
"'9/1 nlg/I mg/I
.------ ---- ----- - ~ -- ------ .-H__-_- ----.
06-87 . 07/30/87 3 /'0. 728/, 0.0/'65 O.OOO}
06.87 08/25/87 3 INSUffiCIENT SAHPLE fOR HEIALS ANALYSIS
06.87 10/1{,/87 I, INSUffiCIENT SAMPLE fOR HETALS ANALYSIS
06.87 10/1{,/87 {, INSUffiCIENT SAHPLE fOR HETALS ANALYSIS
06.87 02/17/88 1 /'8.0232 0.2698 0.0002 U
06-87 0{,/13/88 2 I NSlJff I C I EN T SAHPLE fOR HEIALS ANALYSIS
06.87 07/1/,/88 3 INSUfF ICIENT SAMPLE fOR HEIALS ANALYSIS
06.87 10/26/88 I, DRY
(Rocky Flats)
Ha I ybdcOUll Nickel PatassiUli Seleniun
(Ho), dilis. (Wi), diss. (IC ), dis&. (Se), diss.
mgl! 1119/1 1119/1 1119/1
-----
0.0220 U 0.2691 2.1, 0.02
0.0220 U
O. 281,1
2.5
0.015
H.87 12/18/87 {, 30.8697 0.1097 0.0002 U 0.0220 U 0.1579 1.2 0.51
{'3-87 02/22188 1 35.2978 0.0918 0.0002 U 0.0220 U 0.6079 5.5 0.5
H.87 0{,/11/88 2 37.5773 0.08H 0.0002 U 0.0265 0.86101, 4.5 0.{,21,
H - 87 07/20/88 3 3{,.{,HO 0.2523 0.0002 U 0.0220 U 0.3601 2.8 0.395
H.87 10/11/88 {, INSUfF ICIENT SAMPLE fOR HETALS ANALYSIS
{,{,-87
11/1 {,/87 {,
DRY
{'{'-87
02122188 1
DRY
NR : Analyte not reported
J : Present below detection limit
U : Analyzed but not detected
B : Present in laboratory blank
* : Holding time not met
N : Batch spike not in 80-120X range
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS A'l' TilE 881 HI LLSI DE
Yeti Date Si tver Sodiun Tin Stroot iun That t iua Vanadiua Zinc
HUliber SlII1pted Qtr. (Ag), di~s. (Ha), diss. (Sn), diss. (Sr), dili5. (It), di5S. (V), diu. Un), diu.
oig/t OIg/t 0191 t 11191 t . 11191 t ~/t mg/t
- -- ---
06-87 07;10/87 3 0.0076 U 211.6911 HR 1.3294 0.01 U 0.0240 U 0.0200 U
06-87 08/25/87 3 INSUff ICIENT SAMPLE fOR MEIAlS ANALYSIS
06-87 10/14/87 4 INSUff ICIENT SAMPLE FOR METALS ANALYSIS
06-87 10/14/87 4 INSUFFICIENT SAMPLE FOR METALS ANALYSIS
06-87 02117/88 1 0.0076 U 218.7943 NR 1. 5303 0.01 U 0.0240 U 0.0200
06-87 04/1]/88 2 INSUff ICIENT SAMPLE FOR METALS ANALYSIS
06-87 07/14/88 3 INSUffiCIENT SAMPLE FOR METALS ANALYSIS
06-87 10/26188 4 DRY
4]-87 12118/87 4 0.0076 U 180.95]5 HR 1.3286 0.01 U 0.0240 U 0.5827
4]-81 02122188 1 0.0076 U 191.2081, NR 1.4910 0.01 U 0.0240 U 2.1]06
4]-87 01,/11/88 2 0.0016 U 165.6121, NR 1.2159 0.01 U 0.0360 U 2.4500
43-87 07/20/88 3 0.0016 U 180.0329 NR 1.3836 0.010 U 0.0360 U 0.8048
43-87 10/11/88 4 INSUffiCIENT SAMPLE FOR HETAlS ANALYSIS
44-87
11/14/87 4
DRY
44-87
02122188 1
DRY
HR = Anatyte not reported
J = Present bet ow detection timit
E . E5timated vatue
U = Anatyzed but not detected
B = Present in taboratory btank
. = Hotdlng time not met
N ~ Batch lipike not in 80-120X range
-------
Groundwater
olved Metals Results
For Wells at Rockwell
ALLUVIAL WELLS A'l' 'l'HE 881 HILLSIDE
UeU
N~ber
Date
SlIIIpled Qtr.
Aluninun
(AI>, diss.
nlg/ I
1,4-87
44-87
1,4-87
04/18/88 2
07/20/88 3
10/26/88 "
DRY
DRY
DRY
49-87 11/18/87 " DRY
1,9-87 02/17/88 1 DRY
1,9-87 .04/13/88 2 DRY
1,9-87 01,/13/88 2 DRY
1,9-87 01/18/88 3 DRY
49-87 10/21/88 4 DRY
Ant imony
(Sb>, diss.
"19/ I
Arsenic
(As), diss.
119/ I
50-87 11/18/87 4 INSUffICIENT SAMPLE fOR MEJAlS ANALYSIS
50-87 11/18/87 4 INSUffICIENT SAMPLE fOR METALS ANALYSIS
50-87 02/17/88 1 DRY
50-87 04/13/88 2 DRY
50-87 01/18/88 3 DRY
50-87 10/21/88 I, DRY
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
....~~?}$",:j1 ,;.",/",,/<-1''''" io"=l-~~QfM.~"",,''1 '.'" t,. "',c' " ' .. ,-"1' -ct~_..a.r<~...'''- . . --
,'.'" -..--- '-.,., .
(Rocky Flats)
BariUli
(Ba), diu.
1119 / t
Beryl! iUD
(Be), diss.
1119 / t
.
Ca
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS Arf rfllE 881 III LLSIDE
UeU Date Ces iun Chromiun Cobal t Copper Iron lead lithiun
NUlber Sanpled Qtr. (Cs), diss. (Cr), diss. (Co), diss. (Cu), diss. (Fe), diss. (Pb), diu. (LI),diss.
II"J/I PIg 1 I 1119/1 1119/1 1119/1 118/. DIg/I
-
44-87
44-87
44-87
04/18/88 2
07/20/88 3
10/26/88 4
DRY
DRY
DRY
49-87 1\/18/87 4 DRY
49-87 02/17/88 1 DRY
49-87 04/13/88 2 DRY
49-87 04/13/88 2 DRY
49-87 07/18188 3 . DRY
49-87 10/21/88 4 DRY
50-87 11/18/87 4 INSUffiCIENT SAHPlE fOR HETAlS ANALYSIS
50-87 11/18/87 4 INSUffiCIENT SAHPlE fOR HETAlS ANALYSIS
50-87 02117/88 1 DRY
50-87 04/13/88 2 DRY
50-87 07/18/88 3 DRY
50-87 10/21/88 4 DRY
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-1201 range
E . Estimated value
-------
Groundwater
olved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS A'l' THE 881 HILLSIDE
~eil
Nl..ber
Date
Sampled Qtr.
Hagl\esiun
(Hg), diss.
0'9/1
44-87
"-87
"-87
04/18/88 2
07120/88 3
10/26188 4
DRY
DRY
DRY
49-87 11/18/87 4 DRY
49-87 02/17/88 1 DRY
49-87 04/13/88 2 DRY
49-87 01,/13/88 2 DRY
49-87 07/18/88 3 DRY
49-87 10/21/88 4 DRY
Hanganese
(Hn), diss.
0'9/1
Hercury
(Hy), diss.
1119/1
-------
50-87 11/18/87 4 INSUffiCIENT SAHPlE fOR HETAlS ANALYSIS
50-87 11/18/87 4 INSUffiCIENT SAHPlE fOR HETAlS ANALYSIS
50-87 02/17/88 1 DRY
50-87 04/13/88 2 DRY
50-87 07118/88 3 DRY
50-87 10/21/88 4 DRY
NR = Analyte not reported
J = Present below detection limit
~"""''Y''';;au.... .
~#...- ro... ".' ...,-.- - .
U = Analyzed but not detected
B = Present in laboratory blank
Hol ybdenuo
(Ho), diss.
0'9/1
Nickel
. (Ni), diss.
019/1
~
Poteslih..
(K ), diu.
1119/1
* = Holdiny tilDe not met
N = Batch spike not in 80-120X range
-".' ._---~........-.....-.....--.--......-.
".- <...... -
Seleniun
(Se), diu.
019/1
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS Arr 'I'IiE 881 HILLSIDE
\leU
Nwber
S it 'o'er
(Ag), diss.
1119/1
Date
SIUIf)I ed Qtr.
44-87
104-87
44-87
04/18/88 2
07/20/88 3
10/26/88 I,
DRY
DRY
DRY
109-87 11/18/87 I, DRY
109-87 02/17/88 1 DRY
49-87 04/13/88 2 DRY
109-87 04/13/88 2 ORY
109-87 01/18/88 3 DRY
49-87 10/21/88 I, DRY
Sodiull
(Na), diss.
Dig / I
Iin
(Sn), diss.
109/1
50-87 11/18/87 I, INSUfflCIENI SAMPLE fOR MEIALS ANALYSIS
50-81 11/18/81 I, INSUfflCIENI SAMPLE fOR "EIALS ANALYSIS
50-87 02/17/88 1 DRY
50-81 04/13/88 2 DRY
50-81 01/18/88 3 DRY
50-81 10/21/88 4 DRY
NR .. Analyte not reported
J .. Present below detection limit
U .. Analyzed but not detected
B .. Present in laboratory blank
Stroot ilJll
(Sr), diu.
Dig / I
IhaU ilJll
(1), dlss.
Dig / I
VanadlLA
(V), dill.
II1II/'
Zinc
Un), dill.
mg/'
. .. Holding time not met
N .. Batch spike not In 80-120X range
E .. Eat ll118ted value
-------
.'
Groundwater
olved Metals Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS A'r 'l'HE 881 HILLSIDE
Uell Date Aluninun Ant imony Arsenic Bariun Beryl I iun Caduha
Nlilber Sanpl ed Qtr. (AI). diss. (Sb), diss. (As), diss. (Ba), diss. (Be), diss. (Cd), diu.
nrg/I mg/I mg/l IIJ9 / I mg/l mg/I
- ----- ----- -- -----
Calciw
(Ca), diu.
mg/I
51.87 11/23/87 I, DRY
51.87 02/12/88 1 DRY
51.87 01,/18/88 2 DRY
51.87 07/18/88 3 DRY
51.87 10/21/88 I, DRY
52.87 11/23/87 I, 0.050.5 0.02 U 0.005 U 0.1771, 0.005 U 0.0003 J 85.6972
52.87 11/23/87 I, INSUff ICIENr SAMPl.E fOR MEIALS ANALYSIS
52.87 02/12/88 1 0.0290 U 0.02 U 0.00.5 J 0.1561 0 . 005 U 0.001 U 101,.3593
52.87 01,/18/88 2 0.0321 0.0.51,0 U 0.005 U 0.1202 0.0010 U 0.0050 U 110.5l,78
52-87 07/18/88 3 0_0290 U 0.01,63 0.005 U 0.11,05 0.0010 U 0.0050 U 113.3889
52-87 10/18/88 I, 0.0377 0.0627 0.005 U 0.1436 0.0010 U 0.0050 U 106.9126
53-87 11/18/87 I, INSUff ICIENr SAMPLE fOR METALS ANALYSIS
53-87 11/18/87 I, INSUfflCIENr SAMPLE fOR MErALS ANALYSIS
53-87 02/ 10/88 1 DRY
53-87 01,/11/88 2 INSUff ICIENr SAMPLE fOR MErALS ANALYSIS
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
.. = Holding- time not met
N = Batch spike not in 80.120X range
E = Estimated value
-------
1"
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS A'l' THE 881 HILLSIDE
~eU
N~lber
Date
Sampled Qtr.
Cesillll
(Cs). diss.
1\19/1
Chromillll
(Cr),. di ss.
1119/ I
Cobs I t
(Co). diss.
019/1
Copper
(Cu), di&s.
11191 I
Iron
(Fe), di&&.
1119/1
lead
(Pb), -dIll.
II1II/1
Li th i lIII
(lO, diu.
~/I
51-87 11/21/87 4 DAY
51-87 02/12/88 1 DAY
51-87 04/18/88 2 DAY
51-87 07/18/88 3 DAY
51-87 10/21/88 4 DAY
52-87 11/23/87 4 0.02 U 0.0100 U 0.0220 U 0.0244 0.0209 NR NR
52-87 11/23/87 4 INSUfflCIENI SAHPLE fOR "EIALS ANALYSIS
52-87 02/12/88 1 0.02 U 0.0100 U 0.0220 U 0.0063 U 0.0069 U 0.005 U 0.1 U
52-87 04/18/88 2 0.02 U 0.0100 U 0.0220 U 0.0087 0.0187 0.005 U 0.1 U
52-87 07/18188 3 0_020 U 0.0100 U 0.0220 U 0.0110 0.0215 0.005 U NR
52-87 10/18/88 4 0.02 U 0.0100 U 0.0220 U 0.0166 0.0291 0.005 U NR
53-87
53-87
11/18/87 4
11/18/87 4
INSUfflCIENI SAHPLE fOR "EIALS ANALYSIS
INSUfflCIENI SA"PLE fOA "EIALS ANALYSIS
53-87
53-87
02/10/88 1
04/11/88 2
DAY
INSUfflCIENI SA"PLE fOA "EIALS ANALYSIS
NA = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N c Batch spike not In 80.120X range
E c Estimated value
... ... .......,.._......~ -
.............,~~
-------
).
Groundwater
olved Metals Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS A'll THE 881 HILLSIDE
~eU
N~ber
Date
Sa~led Qtr.
Hagnes i un
(Hg), diss.
nig/ I
Hanganese
(Hn), diss.
mg/I
Hercury
(Hg), diss.
mg/I
MolybdenlJll
(Ho), diss.
119/ I
Nickel
(NO, diss.
mg"
, PotulIlU8
(Ie ), diu.
1Ig/ ,
SeleniUli
(Se), diu.
RIg"
- ----
51.87 11/23/87 I, DRY
51-87 02/12/88 1 DRY
51.87 01,/18/88 2 DRY
51.87 07/16/88 3 DRY
51.87 10/21/88 I, DRY
52.87 11/23/87 4 19.5H8 0.2171 0.0002 U 0.0220 U 0.01,01 Ni 0.005 U
52-87 11/23/67 4 INSUFF ICIENT SAMPLE fOR HETAlS ANALYSIS
52.87 02/12/88 1 25.071,2 0.7556 0.0002 U 0.0220 U 0.0370 U 3.2 0.005 U
52.87 010/18/88 2 31.2190 0.1,838 0.0002 U 0.0220 U 0.0370 U 2.3 0.003 J
52-87 07/18/88 3 31.':869 0.5079 NR 0.0220 U 0.1102 1.8 0.005 U
52-87 10/18/88 4 26.18610 0.7057 0.0002 U 0.0220 U 0.0501, 1.6 0.005 U
53,87 11/18/87 I, INSUffiCIENT SAHPlE fOR METALS ANALYSIS
5]-87 11/18/87 I, INSUFFICIENT SAMPLE fOR HETAlS ANALYSIS
53,87 02/10/88 1 DRY
5],87 01,/11/88 2 INSUffiCIENT SAMPLE fOR ME-TAlS ANALYSIS
NR = Analyte not reported
J = Present below detect ion I imi t
U = Analyzed but not detected
B = Present in laboratory blank
* = Holding time not met
N = Batch spike not in 80.120X range
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS A'l' 'l'HE 881 HILLSIDE
~elt Date Si Ivcr SodillD Tin Stront iliA Thall illD
NLJlber Sallpled Qtr. (A9), diss. (Na), diss. (Sn), diss. (Sr), diss. (TU, diss.
1119/1 mg/l 019/1 nl9/ I mg/l
- - --.-- ---- ----
Vanadh..
(V), diu.
mg/l
Zinc
(In), diss.
1IIg/1
51.87 11/23/87 I, DRY
51.87 02/12/88 1 DRY
51.87 01,/18/88 2 DRY
51.87 07/18/88 3 DRY
51.87 10/21/88 I, DRY
52.87 11/23/87 I, 0.0076 U 121,.7997 NR 0.7136 0.01 U 0.021,0 U 0.0252
52.87 11/23/87 I, INSUffiCIENT SAMPLE fOR MEIALS ANALYSIS
52.87 02/12/88 1 0.0076 U 166.3 7t,1 NR 0.8222 0.01 U 0.021,0 U 0.01,14
52.87 01,/18/88 2 0.0076 U 164.5510 NR 0.8149 0.01 U 0.0360 U 0.0711
52.87 07/18/88 3 0.0076 U 173-5700 NR 0.8154 0.010 U 0.0360 U 0.2643
52-87 10/18/88 4 O.0076N U 184.71,]8 NR 0.7910 0.01 U 0.0360 U 0.1531
53-87 11/18/87 I, I HSLJff ICIENT SAMPLE fOR METALS ANALYSIS
53-87 11/18/87 4 I HSLJff ICIENT SAMPLE fOR METALS ANALYSIS
53-87 02/10/88 1 DRY
53-87 01,/11/88 2 I HSLJff ICIENT SAMPLE fOR METALS ANALYSIS
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-1201 range
E a Estimated value
'. . '..-.:::1
-------
Groundwater 0' ~ olved Metals Results
For Wells at
ALLUVIAL WELLS A'l' 'l'HE 881 HILLSIDE
Yell
NUlber
Ant imony
(Sb), diss.
mg/I
Arsenic
(As), diss.
1119/1
Date
SBllf>1 ed Qt r.
AllJuinun
(AI), diss.
mg/I
51-87
51-87
07118/88 1
10/21/88 4
DRY
DRY
54-87 11118/87 4 INSUffiCIENT SAMPLE fOR HETAlS ANALYSIS
54-87 11/18/87 4 INSUffiCIENT SAMPLE fOR HETAlS ANALYSIS
54-87 11/18/87 4 INSUffiCIENT SAMPLE fOR HETAlS ANALYSIS'.
54-87 02110/88 1 DRY
54-87 04/11/88 2 INSUffiCIENT SAMPLE fOR HETAlS ANALYSIS
54-87 07/18/88 1 DRY
54-87 10/21/88 4 DRY
,
NR : Analyte not reported
J z Present below detection limit
U : Analyzed but not detected
B : Present in laboratory blank
. .'~, ! .-:~.~ ~,::.\.. .:,.
,', ". \ '.:
c~-.......
ockwell
(Rocky Flats)
Bariun
(&8), diu.
mg/I
Beryll i lJD
(Be), dilis.
1Ig/ I
..
Cactnh..
(Cd), dill.
III!iI/l
. : Holding time.not met
N : Batch lipike not in 80-120~ range
Calc IUD
(Ca), diu.
mg/l
E a Estimated value
..jIw ~ q- !
,
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS AT THE 881 IIILLSIDE
Uell
Nurber
-
53-87
53-87
51,-87
51,-87
51,-87
51,-87
51,-87
51,-87
51,-87
Date Cesiun Chromiun Cob
-------
Groundwater Dissolved Metals Reqults
ALLUVIAL WELLS A'l' '1'IIE 881 HILLSIDE
For Wells at Rockwell
(Rocky Flats)
IJe II
N~ber
Date
Sanpled Qtr.
M~yncs i un
(M9), diss.
1119/1
Man93nese
(Mn), diss.
1119/1
Mercury
(H9), diss.
ID!j / I
-+--- -----
_.. ----.----.-
53-87
53-87
.
07/18/88 3
10/21/88 I,
DRY
DRY
54-87 11/18/87 I, INSuff ICIENT SAMPLE fOR METALS ANALYSIS
54-87 11/18/87 I, INsuffiCIENT SAMPLE fOR MEIAlS ANALYSIS
51,-87 11/18/87 4 I NSUff I C I EN I SAMPLE fOR MEIAlS ANALYSIS
54-87 02/10/88 1 DRY
51,-87 01,/11/88 2 I NSUff I C I EN r SAMPLE fOR METALS ANALYSIS
51,-87 07/18/88 3 DRY
51,-87 10/21/88 " DRY
NR ; Analyte not reported
J ; Present below detection limit
U ; Analyzed but not detected
B ; Present in laboratory blank
"olybdcnun
("0), diss.
II~/I
Wickel
(Wi), diss.
1119/1
--------
;
Pota5lliUl
(IC ), diu.
AIg/t
* ; Holding time not met
N ; Batch spike not in 80-120X range
Seleniun
(Se), diu.
1119/1
E . Est imated value
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS Arr rrHE 881 HILLSIDE
~ell Date Silver Sodiun Jin Strontilnl Thall ilnl Vanadhn Zinc
NUiber 5a"pl ed Qtr. (Ag), diss. (Na), diss. (Sn), diss. (Sr), diss. ot), diss. (V), diu. (In), diss.
mg/I 1119/1 1119/1 1119/1 mg/t AIg/t mg/t
-- --- -------
53-87
53-87
07/18/88 3
10/21/88 4
DRY
DRY
54-87 11/18/87 4 INSUffiCIENT SAMPLE fOR HETAlS ANALYSIS
54-87 11/18/87 4 INSUffiCIENT SAMPLE fOR HEIAlS ANALYSIS
54-87 11118/87 4 INSUffiCIENT SAMPLE fOR HETAlS ANALYSIS
51,-87 02/10/88 1 DRY
54-87 04/11/88 2 INSUffiCIENT SAHPlE fOR METALS ANALYSIS
54-87 07/18/88 3 DRY
54-87 10/21/88 4 DRY
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
* = Holding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
t
..
ALLUVIAL WELLS AT THE 881 HILLSIDE
INORGANIC COMPOUND RESULTS
....
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. COLDEN. COLORADO
JANUARY 1990
,
-;
-------
, .
Groundwate~_lnorganic Results
For Wells at. ftockwell (Rocky Flats)
ALLUVIAL WELLS A'l' 'l'HE 881 HILLSIDE
Nitrate.
Uell Date lotal Dissolved Solids Chloride Nitrite-Nitrogen Sulfate HC03.
NUlber Sanpled Qtr. HG/l HG/l HG/l HG/l HG/l
-- ----
09,74 03/09/87 1 1536 178 34.0 173 231
09-74 04/09/87 1 1176 294 8.80 180 244
09'74 OS/21/87 2 1313 276 7.60 235 253
09.74 07102187 3 1445 304 10.0 300 258
09-74 08/11/87 5 DRY
09,74 10/20/87 4 1588 41,9 26.8 213 256
09,74 10/28/87 4 INSUfflCIENI SAHPlE fOR INORGANIC ANALYSIS
09,74 11/17/87 4 INSUfflCIENI SAMPLE fOR INORGANIC ANALYSIS
09-74 02125/88 1 1253 250 8.67 230 161
09,74 04/14/88 2 1189 221 7.51 213 264
09,74 04/15/88 2 1188 224 1.62 268 241
09-74 07/20/88 3 1231 290 9.18 300 272
09.74 10/25/88 4 1516 369 32.1 239 226
10-74 OS/21/81 2 18H 355 55 358 284
10.74 07101/81 3 DRY
10'74 10/20/87 4 INSUfflCIENI SAMPLE fOR INORGANIC ANALYSIS
10-74 10/20/87 4 INSUfflCIENI SAMPLE fOR INOKGANIL ANALYSIS
10.74 02125/86 1 1646 511, 36.7 -- 311 165
10.74 07/19/86 3 1530 325 41,.7 31] 269
10.71, 10/25/66 I, 11,62 502 40.5 282 255
Notes:
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present in laboratory blank
fv .'
,os. ""........t,,,,,,,,,,-~,'d'-:-;L,,;;~~'df:.:-~..t.~"_~~iob .,...~t
'. !~:''':}':f.J'; '$.tlGtl&:41
......_---..
-------
Groundwater Inorganic Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS AT TilE 881 HILLSIDE
~ett
Nwber
Date
Saupi ed
Qtr.
Total Dissoived Soiids
"G/l
Chioride
"G/l
Nitratet
Nitrite-Nitrogen
MG/l
Sui f.te
MG/l
HC01-
"G/l
01-87 10/12/87 4 DRY
01-87 02/10/88 1 INSUfflCIENJ SAMPLE Faa INORGANIC ANALYSIS
01-87 04/11/88 1 DRY
01-87 04/11/88 2 DRY
01-87 07/20/88 1 INSUffiCIENT SAMPLE Faa INORGANIC ANALYSIS
01-87 10/26/88 4 INSUfflCIENJ SAMPLE Faa INORGANIC ANALYSIS
04-87 OS/20/87 1 B18 200 5.30 310 309
04-87 OS/26/87 2 INSUFFICIENT SAMPLE Faa INORGANIC ANALYSIS
04-87 07/09/87 3 2]74 458 6.0 700 390
04-87 10/14/87 4 1715 324 3.76 435 421
04-87 10/14/87 4 INSUffiCIENT SAMPLE Faa INORGANIC ANALYSIS
04-87 02/15/88 1 1756 1B 2.60 500 456
04-87 04/B/88 2 1816 269 3.86 518 432
04-87 07/14/88 3 1264 189 4.99 449 411
04-87 10/20/88 4 943 98.8 9.53 236 399
06-87
06-87
07/10/87
08/25/87
3
3
1195 263
INSUFFICIENT SAMPLE Faa INORGANIC ANALYSIS
0.14
283
367
"
II
Notes:
NR - Anaiyte not reported
J - Present beiow detection iimit
U - Analyzed but not detected
B - Present in iaboratory biank
i
I
I
i
I
I
I
I
"
t
-------
" -; .1,
'''.1 ..
'.. : '
.
.
Groundwat
Inorganic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS A'l' 'rHE 881 HILLSIDE
Lie II Date lotal Dissolved Solids Chloride
NIJlOer Sanpled !Hr. HG/L HG/L
----------- ---------
06-87 10/11,187 I, INSUfF ICIENI SAMPlE fOR INORGANIC ANALYSIS
06,87 10/11,/87 I, INSUfFlCIENI SAMPLE fOR INORGANIC ANALYSIS
06-87 02/17/88 1 11,30 H2
06-87 01,/13/88 2 INSUfF ICIENI SAMPLE fOR INORGANIC ANALYSIS
06-87 07/11,/88 3 I NSLJfF ICI£NI SAMPLE fOR INORGANIC ANALYSIS
06,87 10/26/88 I, OilY
Ni trate.
Nitrite'Nitrogen
HG/L
HC03.
HG/L
Sui tate
HG/L
0.02 U
285
1,13
1,3-87 12/18/87 I, 1207 239 3.27 295 263.0
1,3-87 02122188 1 1770 259 3.00 243 139
l,J - 87 04/11/88 2 1251 271 3.70 303 249
l,J-87 07/20188 3 1232 21,6 4.29 332 356
l,J - 87 10/17/88 I, INSUfFlCIENI SAMPLE fOR INORGANIC ANALYSIS
44,87 11/11,/87 I, DRY
41,,87 02/22/88 1 DRY
44-87 04/18/88 2 DRY
1,1,,87 07/20188 3 DRY
1,1,-87 10/26/88 I, DRY
Notes:
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Presen( in laboratory blank
,,4 :.
. "; -, . .~. ,-. .").
. oj'"
- .
-------
Groundwater Inorganic Results
Nitrate.
~ell Date Total Dissolved Solids CMor ide Nitrite-Nitrogen SuUate
NlJIber S IIIIp 1 ed Qtr. HG/l HG/l HG/l HG/l
-
1,9-87 11/18/87 I, DRY
1,9-87 02/ \7/88 1 DRY
1,9-87 01,/1]/88 2 DRY
1,9-87 01,/1]/88 2 DRY
1,9-87 07/18/88 ] DRY
1,9-87 10/21/88 I, DRY
For Wells at Rockwell
ALLUVIAL WELLS A'r THE 881 HILLSIDE
50-87 11/18/87 t, INSUfFlCIENJ SAMPLE fOR INORGANIC ANALYSIS
50-87 11/18/87 t, INSUfFlCIENJ SAMPLE fOR INORGANIC ANALYSIS
50-87 02/17/88 1 DRY
50-87 01,/1]/88 2 DRY
50-87 07/18/88 ] DRY
50-87 10/21/88 t, DAY
51-87 11/2]/87 t, DAY
51-87 02/ 12/88 1 DRY
51-87 01,/18/88 2 DRY
51-87 07/18/88 ] DRY
Notes:
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present In laboratory blank
l ,
""~L....,,",t.....~..
t~...~~.'t ~~ ~'. t~~....t.,.~~~,
-------
(
.
Groundwater Inorganic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT 'l'HE BBl HILLSIDE
Uell
Nunber
Date
Sanpled
Qtr.
Total Dissolved Solids
HG/l
Chi oride
HG/l
Nitrate.
N i tr i te.Ni trogen
HG/l
Sui tate
HG/l
HC03.
HG/l
----
----.--- -
---
..-
-,---
51-87
10121/88
I,
DRY
52-87 11/23/87 I, 700 59.5 0.02 U 133 112
52.87 11123187 I, INSUff ICIENT SAHPlE fOIl INORGANIC ANALYSIS
52-87 02112/88 1 811, 67.3 0.02 U 186 502
52-87 01,118/88 2 936 76.9 0.02 U 241 359
52-87 07118188 3 878 85.6 0.06 225 1,60
52.87 10/18/88 I, 799 2.90 0.02 U 197 1,43
53-87 11/18187 I, INSUffiCIENT SAHPlE fOIl INOIIGANIC ANALYSIS
53-87 11/18/87 4 INSUffiCIENT SAMPLE fOR INOIIGANIC ANALYSIS
53-87 02110/88 1 DRY
53-87 01,/11/88 2 INSUffiCIENT SAMPLE fOR INOIIGANIC ANALYSIS
53-87 07/18/88 3 DRY
53-87 10121188 I, DRY
51,-87
11/18/87
I,
INSUffiCIENT SAHPlE fOR INORGANIC ANALYSIS
Notes:
NR ; Analyte not reported
J ; Present below detection limit
U ; Analyzed but not detected
-------
Groundwater Inorganic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS AT THE 881 HILLSIDE
Nitrate.
~ell Date Iotal Dissolved Solids Chloride Nitrite-Nitrogen Sulfate
Nuuber S8I~led Qtr- KG/l KG/l KG/l KG/l
-
5~-87 11/18/87 ~ INSUffiCIENT SAMPLE fOR INORGANIC ANALYSIS
5~-87 11/18/87 I, INSUFf ICIENI SAMPLE fOIl INORGANIC ANALYSIS
5~-87 02/10/88 1 DRY
5~-87 0~/11/88 2 INSUFfICIENI SAKPlE fOR INORGANIC ANALYSIS
54-87 07/18/88 3 DRY
5~-87 10/21/88 I, DRY
Notes:
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present in laboratory blank
l
.
HC03-
KG/l
I
-------
..
ALLUVIAL WELLS AT THE 881 HILLSIDE
TOT AL RADIOCHEMISTRY RESULTS
...
INTERIM R.E.\iEDlAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. COLDEN, COLORADO
-------
08/25/B9
Page 1
TOTAL RADIOCHEMISTRY RESULTS SUMMARY
FOR GROUND ~ATER AT Rockwell (Rocky Flats)
Number of Samples
ANilyte
Max i !lUll
Value
Mini!IUII
Value
Above
Detect; on
Below Not
Detection Reported
Meen
Value*
ALLUVIAL ~LLS AT THE 881 HILLSIDE
..
Gross Alpha (pci/l) 220 ~ 10 21 ~ 10 5 0 0 85
Gross Seta (pci/l) 1310 ~ 15 .3 ~ 8 5 a 0 71
'~ranium 233, 234 (pci/l) 22 ~ 3 6.0 ~ 1.3 5 a a 10
Uranium 235 (pci/l) .81 ~ .71 0.0 ~ 0.36 5 0 0 0.3310
uranium 238 (pci/l) 14 ~ 3 2. 9 ~ 2.1 5 a 0 6.760
Strontium 89, 90 (pci/l) 4.50 ~ <0.6 ~ 5 a 0 1.814
Plutonium 239, 240 (pci/l) 0.28 ~ 0.59 0.0~1.1 5 0 0 0.098
Americium 241 (pci/l) 0.0 ~ 2.6 0.0 ~ 3.5 4 0 1 0.000
Cesium 137 (pci/l) 3.1 ~ 3. 1 ~ 1 a 4 3.100
Tritium (pci/l) <1 11) ~ <110 ~ 5 0 0 0.000
For activities above detection only.
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
Yell Date GI-O~S Alpha Gru~s Beta
Number Sampled atr. pC ill pei/I
- ----
Uranilln 231, 231,
pCi/1
Uraniun 235
pCl/t
09-71, 03/09/87 1 100 !. 21 121 !. 21 6.0 !. 1.3 0.26 !. 0.1,1,
09-71, 01,/09/87 1 28 !. 26 -3 !. 8 6.3 ! 2.3 .52 ! .73
09-71, OS/21/87 2 21 !. 10 35 !. 11, 8.1, ! 1.1, 0.08 !. 0.33
09-71, 07/02/87 3 See dissolved r ad i ochenli s t ry -
09-71, 08/11/87 3 DRY
09-71, 10/20/87 I, See dissolved radiochemistr.y.
09-71, 10/28/87 I, ...
09-71, 11/17/87 I, ...
09-71, 02/25/88 1 See dissolved raJiochemistry.
09-71, 01,/11,/88 2 See dissolved radiochemistry.
09-71, 01,/15/88 2 See dissolved radiochcmi stry.
09-71, 07/20/88 3 See dissolved radiochemistry.
09-71, 10/25/88 I, See dissolved I adi uchelili st ry.
10-71, OS/21/87 2 51, !. 20 97 ! 5 8.2 ! 1.9 0.0 !. 0.36
10-71, 07/01/87 3 DRY
10-71, 10/20/87 I, ...
10-71, 10/20/87 I, ...
10-71, 02/25/88 1 See dissolved radiuchemistry.
10-71, 07119/88 3 See dissolved radiochemistry.
10-71, 10/25/88 I, See di~solved radiochemistry.
Notes:
NR = AIM I Y t e no t "':1"" ".d
... = Insufficicnt SallfJle for Rudiuchemistry Analyses
t-
-------
f'
Groundwater T
Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
lJeU
NUliber
Uraniun 238
pCi/1
S t ront i UII 11'1.90
pCi/1
Piutoniull 239
pCi/1
Date
Sampled
atr.
-
09-710 03/09/87 1 5.01. 1.1 <0.6
09-710 010/09/87 1 2.91. 2.1 .65
09-710 OS/21/87 2 7.7 1. 1.3 1. 710
09-710 01102187 3 See dissolved radiochemistry.
09-710 08111/87 3 DRY
09-710 10/20/87 10 See dissolved rudiochemistfY.
09-74 10/28/87 10 ...
09-710 11/17/87 10 ...
09-710 02/25/88 1 See dissolved radiochemistry.
09-710 01,/11,/88 2 See dissolved radioch~nistry.
09-710 010/15/88 2 See dissolved radiochemistry.
09-710 07/20/88 3 See dissolved radiochemistry.
09-710 10/25/88 10 See dissolved radiochL"I1Iistry.
10-710 OS/21/87 2 10.2 1. 1.3 2.18
10-710 01101/87 3 DRY
10-710 10/20/87 " ...
10-710 10/20/87 I, ...
10-710 02/25/88 1 See dissolved radiochemistry.
10-710 07/19/88 3 See dissolved radiochemistry.
10-710 10/25/88 " See dissolved radiochemistry.
0.28 1. 0.59
0.0 1. 1. 1
.19 1. .75
0.0201.0.79
Notes:
'NR = Analyte /lot reponed
... = Insufficient Sample lor R"diochemistry Analyses
i
Americi UII 210 1
pCi/1
NR
0.0 1. 3.5
0.0 .! 1.2
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
Ye II
NLJllbcr
Ccsilln 117
pCi/1
1 r i t i lIli
pCi/1
Date
Sanipl cd
CIl r.
09-710 03/09/87 1 NR <110
09-710 04/09/87 1 NR <110
09-710 OS/21/87 2 NR <110
09-710 07/02/87 :5 See dissolved radiochemistry.
09-710 08/1 1/87 :5 DRY
09-710 10/20/87 I. See dissolved radiochemistry.
09-710 10/28/87 I, .*.
09-710 11/17187 I, .**
09-710 02/25/88 1 See dissolved radiochemistry.
09-710 01,/110/88 2 See dissolved radiochemistry.
09-710 01,/15/88 2 See dissolved radiochemistry.
09-710 07/20/88 :5 See dissolved radiochemistry.
09-710 10/25/88 I. See dissolved radiochemistry.
10-710 OS/21/87 2 NR <1\0
10-710 07/01/87 3 DRY
10-74 10/20/87 I. .**
10-710 10/20/87 I, ...
10-710 02/25/88 1 See dissolved radiochemistry.
10-710 07/19/88 :5 See dissolved radiochemistry.
10-74 10/25/88 I. See dissolved radiochemistry.
.
Notes: NR" Analyte not reponed
**. " Insufficient Sample for Radiochemistry Analyses
fl.
-------
Groundwat.er T
t
Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
lie Ii
Nuuver
Date
Sallipl ed
Qlr.
-
01-87 10/12/87 I,
01-87 02/10/88 1
01-87 04/11/88 1
01.87 01,/11/88 2
01.87 07/20/88 3
01-87 10/26/88 4
04-87 OS/20/87 1
04-87 OS/26/87 2
04-87 07/09/87 3
01,-87 10/14/87 I,
01,-87 10/11,/87 4
04,87 02/15/88 1
04-87 01,/13/88 2
04-87 07/14/88 3
04-87 10/20/88 4
06-87 07/30/87 3
06-87 08/25/87 3
06-87 10/14/87 4
Gross AI pha
pCi/l
Gross Bt:la
pCi/l
DRY
See dissolved radiochemistry.
DRY
DRY
...
...
220 .! 10
134 1. 15
...
See dissulved ,,,diodlemislry.
See dissolved radioch~lIistry.
...
See dissolved radiochemislry.
See dissolved radiochemistry.
See dissolved radiochemislry.
See dissolved radiochemistry.
See dissolved 'adlo{h~nistry.
...
...
NOles:
NR = Analyle nol reporled
... = Insufficient Sample for Radiochemistry Analyses
uranium 233, 234
pCi/l
22 .! 3
..
Uranh.. 235
pClll
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT TilE 881 IIILLSIDE
(Hr.
pCi/1
Stront iUII 89,9U
pCi/1
Plutoniun 2~9
pCi/1
Americiun 21, 1
pCi/'
~ell
NUlllber
Date
Salilpled
Uraniull 2~8
01-87 10/12/87 I, DRY
01-87 02/10/88 1 See dissolvccl radiochcmistry.
01.87 01,/11/88 1 DRY
01-87 01,/11/88 2 DRY
01-87 07/20/88 3 ...
01-87 10/26/88 I, ...
01,-87 OS/20/87 1 11, ~ ~ 1,.50 0.0 ~ .55 0.0 ! 2.6
01,-87 OS/26/87 2 ...
01,-87 07/09/87 - 3 See dissolvecl racliochemistry.
04-87 10/14/87 4 See dissolved radiochemistry.
01,-87 10/11,/87 I, ...
04-87 02/15/88 1 Sec dissolvecl racliochclllistry.
04-87 01,/13/88 2 See dissolvecl radiochemistry.
04-87 07/14/88 ~ See dissolvcd radioch<:lIIl~tI y-
04-87 10/20/88 4 See dissolved radiochcmistry.
06,87 07/30/87 3 Sce dissolved radiochemistry.
06-87 08/25/87 3 ...
06-87 10/14/87 I, ...
Notes:
NR = Analyte not reported
**. = Insufticit,nt Sample for Racliod'<:lIIislfy Analyses
.--..-- - .
~
-------
Groundwater To
Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
\Jell
NUliber
Cesiull 137
pCi/l
II' i t iUIi
pCi/l
Date
Sanpl ed
Qtr.
01-87 10112/87 I, DRY
01-87 02/10/88 1 See dissolvcd r
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS Arf TilE 881 HILLSIDE
\Je II Date
IlulidJer SiJluplcd Ot r.
- --
U6-IJI 1O/14/IJI 4
06-1J7 02/17 /UU 1
U6-87 04/13/1J8 2
U6-87 07/14/1J8 3
06-87 10/26/88 4
43-81 12/18/IJI 4
43-U7 U2/22/81J I
43-87 04/11/81J 2
43-87 U7aO/81J 3
43-87 1O/1l11J8 4
44-87 11/14/1!7 4
44-87 02/n/8U 1
44 -87 04/18/88 2
44-87 07l20/1J8 3
44-87 10/26/88 4
49-87 11/1U/ti7 4
Notes:
GlOSS Alpha
pli/I
Gross 8d a
Uraniull 231, 234
pCi/1
pei/I
----.-----------
---------
--------
...
See dissolved l
-------
I
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS A'f TilE 881 HILLSIDE
\Jdl
Oate
SillI~)1 cd
Otl.
Nl'I~)er
06-87 10/14/87 4
06-87 02/1i'/1J1J 1
06-87 04/13/88 2
06-87 07/14/88 3
06-87 10/26/118 4
43-81 12/11J/87 4
43 -1J7 02/22/1J8 1
{,3'87 04/11/88 2
43.87 07/20/88 3
{,3-87 10/17/88 4
44-87 11/14/1J7 4
44-87 02/ n /l1/! 1
44-87 04/18/1J8 2
44-87 07/20/1J8 3
44-87 10/26/88 4
49-87 11/18/1J7 4
UriJnilMIl 258
pCi/1
---------
...
S trOllt hall IJ'I, YU
pCl/1
Plutonlllil 259
pCi/1
---"--
See dl~"olved r.lljlul.hellll~lry.
OIlY
See di~~olvl:d I ;,diuchemi~lry.
SeC dl~~olved
See di~solved
See dissolved
...
OIlY
OIlY
OR1
OR1
ORY
oln
I."jiulhemi~try.
rddlu(hcmistry.
radiochemistry.
Notes:
NR = Allalyte not rCj,ol ted
... = In~uflicicnt S..lIple for Radiuchcmistry AII;,lyses
to
Amcri c it..R 241
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS A 'I' 'rilE 881 IIILLSIDE
\Jell
Date
Siul~)led
(.It r.
NI""ber
--
06-87 10/14/87 4
06-87 02/11188 1
06-87 04/13/88 2
06-87 07/14/88 3
06-87 10/26/88 4
43-81 12/ W/U7 4
43.U7 02/22/8U 1
4j'87 04/11/88 2
43-87 07/20/88 3
43-87 10/17tU8 4
44-87 11/14/87 4
44-U7 02/a/U8 1
44-87 04/18/88 2
44-87 07/20/88 3
44-87 10/26/88 4
49-87 11/18/87 4
[e,;iull 137
IlltiulI
fA: i / I
pC i/I
.--------
See dis,;olved rilJio(helllistry-
...
...
OIlY
:ice 1.11 s~ull/cd I ,.d I ulhellli,;1/ y-
See dissuIl/cd r"dlochellli,;try-
See dissolved I-adiuchelllistry.
See dissolved rilJiuLhelllistry.
...
OIlY
OI{Y
DI{Y
DRY
ORY
DRY
Notes:
NI{ = Analyte not reported
... = Insufficient Sall4)le '01' Radio(hellli';Hy Analy,;es
,
-------
Groundwater To
Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
~
..
\Je II Date Gross Alpha Gross Bela Uranium 2H, 231, Uraniun 235
Number Sampl cd (Hr. pCi/t plilt plilt pCi/l
----- ----.-..- ---------
1,9-81 U211l!1J8 1
1,9-81 01,115/88 2
1,9.87 01,/13/88 2
1,9-87 01118/88 3
1,9-81 10/21/88 I,
5U-81 11118/87 I,
50-81 11118/87 I,
50-1J7 U2117/88 1
5U"81 OI,l 13/1J8 2
50"81 01/18/88 3
50-81 10/21/81J I,
51-81 11/23/87 I,
51.87 02112188 1
51-87 01,/18/88 2
51-81 01118188 3
51-87 10/21/88 I,
52.87 11/23/81 I,
OilY
DRY
DRY
DRY
DRY
.. .
OilY
DRY
OIU
ORY
OilY
OilY
DRY
DRY
OilY
See dissolved radiochemistry.
Notes:
NR = Analyte lIot reporled
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
.
Yell
Number
Dale
SallfJled
Qlr.
-
49-87 02/17/8U 1
49-81 04/ BtUIi 2
49-87 04/ Ii/UU 2
49-87 07/18/118 3
49-87 10/21/88 4
50-87 11/18/117 4
50-87 11/18/87 4
50-87 02/17/88 1
50-87 04/13/88 2
50-87 07/18/88 3
50-87 10/21/88 4
51-87 11/23/87 4
51.87 02/12/88 1
51.87 04/18/88 2
51.87 01/18/88 3
51.87 10/21/88 4
52-87 11/23/81 4
uranium 238
pCi/l
Plulonium 239
pCi/l
Slronliull 89,90
pCi/l
--
OIH
OIH
OWY
OWY
OWY
...
OWY
DRY
OWY
OWY
OWY
OIH
DRY
OWY
DRY
See dissolved I adiochemislry.
Noles:
NW :0 Analyle not I cponcd
... :0 Insufficienl SWllple for W"diochemislry Analyses
~
Americil.lll 21,1
pCi/l
-------
Groundwa ter '1'0
Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
LJe II
Number
Ccsiull 137
pCi/l .
pCi/1
I r i t hili
Date
Sanipl ell
air.
{'9-87 02/17t1J8 1 DRY
{,9.87 0{,113/1J8 2 DRY
{'9-87 041 H/1J8 2 DRY
49.87 01118/U8 3 DRY
49-87 10/21/1J8 {, DRY
50-87 11118/U7 4 ...
50-87 11118/87 {, ...
50-87 02117/88 1 DRY
50-87 04/13/88 2 DRY
50-87 07118/88 3 DRY
50-87 10/21/88 4 DRY
51-87 11/23/87 4 DRY
51-87 02112/88 1 DRY
51-87 04118/88 2 DRY
51-87 07118/88 3 DRY
51-87 10/21/88 4 DRY
52-87 11/23/87 4 See dissolved r..diochemlstry.
Notes: NR; Analyte not reponed
... = Insufficient Sall'Pie for Radioch~mistry Analyses
~
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
Uell
Gross Alpha
pCi/l
Gross lIela
Uranium 211, 21~
pCi/l
Dale
Sampled
NUILer
pCi/1
air-
52-87 11/23/87 ~ ...
52-87 02/12/88 1 See dissolvl:" ".Jcliochl:mistry-
52-87 0~118/88 2 See dissolved "iJdiochemistry.
52-87 07118/88 1 See dissolved r.ldiochl:mistry.
52-87 10118/88 ~ See dissolved ..ildiochl:1Ilislry-
51-87 11118/87 ~
51-87 11118/87 I, ...
53-87 02/10/88 1 DRY
53-87 0~/11/88 2 ...
51-87 07118/88 1 DRY
51-87 10/21/88 ~ DRY
51,-87 11/18/87 ~
54-87 11/18/87 ~ ...
54-87 11/18/87 I, ...
54-87 02/10/88 1 ORY
51,-87 0~111/88 2
51,-87 07118/88 3 ORY
Notes:
NR = Allalyte nOI reponed
... = Insufficient Sample for Radiochemistry Allalyses
.
Uranium 215
pCi/t
-------
II
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
YeU
Number
Date
Sautpl cd
atr.
-
52-87 11/25/87 4
52.87 02/12/1111 1
52-87 04/111/88 2
52-87 07/111/88 3
52-87 10/18/811 l,
53-87 11/11118/ 4
53-87 11/18/87 4
53-87 02/10/86 1
53-87 04/11/88 2
53-87 07/18168 3
53-87 10/21/66 4
54 -87 11/111/87 4
54-87 11/18/87 4
51,-87 11 / 18/87 I,
51,-87 02/10/86 1
51,-87 04/11/86 2
54-87 07/18/88 3
UrimiuD 236
pCi/1
S tront il'D 119.90
pCi/l
PluloniuD 259
pCi/i
See dissolved radiochemistry.
See dissolvc<.l .-a<.liochemistry.
See dissolvc<.l ra<.liochemislry;
See dissolved r"dl,ud1emislry.
.. .
DRY
...
DRY
DRY
...
...
DRY
...
DRY
Notes:
NR = Analyte not reponed
... = Insufficient Salltple for Radiochemistry Analyses
..
AmericilD 21,1
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
~ell
NUliber
Cesiun 137
J£ ill
Date
Sall~)1 ed
Otr.
Iritil.n
pCi/i
52-87 11/2}/87 4 ...
52-87 02112/88 1 See dissolved rddiochemistry.
52-87 04/18/88 2 See dissolved radioch~nistry.
52-87 07118/88 :} See dissolved radiochemisuy.
52-87 10/18/88 4 See dissolved radiodlCmist.y.
5}-87 11118/8/ 4 ...
5}-87 11118/87 /, .u
53-87 02/10/81i 1 DRY
53-87 0/,111/88 2 ...
53-8~ 07/18/88 3 DRY
53-87 10/21/88 /, ORY
51,-87 11/18181 I,
51,-87 11118/81 t,
54-87 11/18/87 /, . u
54 -87 02/1U/IJU 1 Din
54-87 04/11/8IJ 2 .u
54-87 07/18/8U 3 DRY
Notes:
NR : Analyle not repurted
... : Insufficient SiJlI~)lc for Rij(jiochemistry Analyses
..
-------
~ "",. '..cr- -"~' .
Groundwater To
"
Radiochemistry Results
tor Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
Yell
Nunbcl'
5l,.1J7
Notes:
Oate
SaUlpl cd
Gross Alpha
pCi/l
.
Gross Beta
Qt/'.
pCi/l
10/21/88
l,
ORY
NR = Analyte not reported
... = Insufficient Salliple tor Radiochcmistry Analyses
.,
t,
Uraoiull 2B, 23l,
pCi/l
..
UraniLn 2]5
pCi/i
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
~ell Date Uranillu 238 Stront i'.11 8Y. <,II) PlutOllil.U 239 Amer iciun 21, 1
N'.liber Salllpled Otr. pci;t pCi/l pC ill pCi/1
-
54-87 10/21/88 I, OHY
Notes:
NR = Allalyte not n:ported
... = Insufficient Sample for Radiochelllist."y A/lalyses
.
-------
Groundwater To
.'
~ Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
~ell
Nliuber
51,-87
Note,;;
Date
Sampled
Ccs illn H7
pCi/l
J r i t i lJlI
Qtr.
pCi/l
"'
10/21/88
I,
LJiH
NR " Analyte not reported
... = In,;uff icient Salliple fo,' Radiocheillistry Analy,;~s
-------
,
ALLUVIAL WELLS AT THE 881 HILLSIDE
DISSOL VED RADIO CHEMISTRY RESULTS
.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
. ROCKY FLATS PLANT. GOLDEN. COLORADO
-------
08/25/89 Page 1
DISSOLVED 'AD'OCH'H:!:" "SUL'S SUHHA"
FOR GROUND WATER AT kwell (Rocky Flats)
Number of Samples
Max i I!UII Mininun Above Below Not Mean
Analyte Value Value Detection Detection Reported Value-
ALLUVIAL WELLS AT THE 881 HILLSIDE
f
Gross Alpha (pei/l) . 319 : 210J 3 : 10 24 0 0 109
.. Gross Beta (pei/I) 286 : 83 -8 : 27 24 0 0 36
Uranium 233, 2310 (pei/I) 29.3 : 3.9 4.7 : 0.7 210 0 0 17
Uranium 235 (pei/I) 4.3 : 0.9 0.0 : 0.6 210 0 0 0.695
Uranium 238 (pei/I) 25.3 : 3.10 10.0 : 0.6 24 D 0 13
Strontium 89, 90 (pei/I) 2.1 : <1.0 : 6 0 18 0.850
Plutonium 239, 240 (pei/l) .14:.73 '.23 : .59 24 0 0 0.000
Americium 2101 (pei/I) .70 : .86 -0.10 : 1.6 18 O. 6 0.022
Cesium 137 ( ) 0 0 210
Tritium (pei/I) 777 : 333 <515 : 23 0 1 80
.
-------
Groundwater Dissolved Radiochemistry Results
tor Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
Yell Date Gro~s Alpha Gross Bet a U.-aniUlIl 2B, 231. Uraniun 215
Nl.llber SallijJled tHr. PCI/l (H!JA) .'CI/l (HDA) PCI/l (HDA) PCI/L (HDA)
------- ----
09-71, 01/09/87 1 See total r...J i DC 1\<:1111 ~ try.
09-71, 04/09/87 1 See total radi ochemi sHy.
09-71, OS/21/87 2 See tot...1 raJiochemistry.
09-71, 07/02/87 1 6 ~ 29 52 6 ~ 42 79 12.0 ~ 2.1 0.0 !. 0.6 0.9
09-71, 08111/87 1 DRY
09-71, 10/20/87 4 1l, ~ 7 21 . IU 9.2 ~ 0.9 .I,8!. .13
-
09-71, 10/28/87 4 ...
09-71, 11117187 4 ...
09-71, 02/25/88 1 20 ~ 11 14 ~ 27 15 !. 2 0.53 !. 0.16
09-74 01,111,/88 2 22 !. 11 14 !. 18 1,1 12 !. 1 0.42 !. 0.07
09.74 04/15/88 2 21 !. 12 19 !. 16 15 12 !. 1 0.36 !. 0.06
09-74 07/20/88 1 15 !. 4 11!.1 12 !. 1 .28 !. 0.01
09-74 10/25/88 4 Data not yet r<:ceived
10.71, 05121/87 2 See total radiodl(::ml~try.
10-74 07101/87 1 DRY
10- 71. 1O/2U/87 4 ...
10-71. 10/20/87 4 ...
10-74 02/25/88 1 n~ 11 ,8 !. 27 7.1 !. 0.1 0.31 !. 0.12
10-74 07119/88 1 1 !. 4 1 ~ :5 6.2 !. 0.6 0.21 !. 0.06
10-74 10/25/88 " Data not yet received
Notes:
NR = AniJlyte not rq>Ol'leu
... = Insufficient SdJl~)le lor Radiochemistry Analyses
«.
-------
.
.
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
QIr.
PCI/l
(MOA)
Slronliuli 89, 90
PCl/l (MOA)
Pluloniun 219, 240
PCI/l (HOA)
AmericiuQ 21,1
PCl/l
(HOA)
\.Ie II
NUliber
Dale
Silnpled
Uraniun 218
09-74 01/09/87 1 S<:e 10lal radioch<:mi~lry.
09-71, 01,/09/87 1 See total radiochcmislry.
09-71, OS/21/87 2 See tolal radi ochemi s II y.
09.71, 07/02/87 1 8.1 t 1.5 <1.0 O.O!. 1.1 1.6 NR
-
09.71, 08/11/87 1 DRY
09-74 10/20/87 4 7.0 !. .07 1.0 0.00 !. .11 .61 0.00 !. .01 .11,
09-71. 10/28/87 I. ...
09-74 11/17187 I.
09-71, 02/25/88 1 11 !. 1 NR 0.00 !. 0.1,1 NR
09-71, 01./11.188 2 9.2 !. 1.2 NR 0.00 !. 0.01. 0.2S 0.02 ! 0.16 0.50
09-71. 01./15/88 2 9.5 !. 1.0 Nil 0.00 !. 0.01. 0.22 0.00 !. 0.16 0.95
09-74 07/20/88 3 8.6 !. 0.9 Nil 0.00 !. 0.01. 0.00 !. 0.10
09.74 10/25/88 I. Data not yet received
10-71. 05/21/87 2 See lolal radi ochemi s II y.
10- 71, 07/01/87 1 DRY
10-71, 10/20/87 " ...
10.71. 10120/87 4
10-71. 02125/88 1 5.1 !. 0.5 NR 0.00 !. 0.25 NR
10-74 07/19/88 1 ".S !. 0.5 NR 0.00 !. 0.07 0.00 !. 0.08
10-71, 10/25/88 " Dala nol yel recclved
NOles:
NR = Analyle nol reporled
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
Yell Date Ccs iun H7 Iritium
NUlber Sauipl cd Qlr. PCl/l (HLJA) PC 1/ l (HDA)
-
09-7'- 03/0',1/117 1 See tOlal I' ,Ill I odll:mi S t I y.
09-7'- 0'-/09/87 1 See tolal radi odll':llIi S I ry.
09- 7'- OS/21/87 2 See tolal radiochemistry.
09-7'- 07/02187 3 NR <515
09- 7'- 08/11/87 3 DRY
09-7'- 10/20/87 I, NR <520
09- 7'- 10/28/87 I, ...
09-7'- 11/17/87 I, ...
09-7'- 02/25/88 1 NR <210
09-74 0'-/14/88 2 NR <220 220
09-7'- 04/15/88 2 NR <220 220
09.7'- 07/20/88 3 NR 230
09-7'- 10/25/88 '- Oata IIot yet received
10-7'- 05/21/87 2 See total radiochemislry.
10-7'- 07/01/87 3 DRY
10-74 10/20/87 " ...
10-74 10/20/87 I, ...
10. 7t. 02/25/1I1J 1 NR <220
10-7'- 07/19/88 3 NR 210
10-7'- 10/25/88 " Dala not Vel received
NOles:
NR = Anal yle not lepurled
... = Insufficlenl Sall~)le lor R.JJiochellllsll'V Analyses
..
-------
.
..
r "
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
\Jell
NUIDer
Date
Sampled
Qtr.
(iross Alpha
PCI/l
(HDA)
(iross Bcta
PCI/l
(HDA)
Uranium 213. 23~
PCI/l (HDA)
Uranium 235
PCI/l
(HDA)
01.87 10/12/87 ~ ORY
01.87 02/10/88 1 15 ! 11 15 ! 1U 8.~ ! 0.7 0.34 ! 0.11
01.87 0~/11/88 1 DRY
01.87 0~/11/88 2 DRY
01.87 07/20/88 3 ...
01.87 10/26/88 ~ ...
0~'87 OS/20/87 1 Sce total radiochcmistry.
0~'87 OS/26/87 2 ...
0~'87 07/09/87 3 319 ! 2~1 286 .!. 81 26.8 .!. 3.2 0.5 ! 0.4 1.1
0~'87 10/14/87 ~ IH.!. 69 75 ! 5~ 16 ! 3 .56 ! .30
O~ "87 10/1~/87 ~ ...
0~'87 02/15/88 1 50 ! n 16 .!. 13 19, .!. 2 1.1 ! 0.2
0~'87 01,/13/88 2 59 .!. 16 28 ! II! ~o 23 ! 2 0.55 ! 0.09
01,.87 07l1~/88 3 37 .!. 6 30 ! ~ 19 ! 2 0.55 ! 0.10
01,.87 10/20/88 ~ Data /lot yet received
06,87 07/30/87 1 59 ! 33 1,2 ! ~~ 76 29.1 ! 3.9 1.3 ! 0.6
06.87 08/25/87 3 ...
06-87 10/1~/87 ~ ...
Notes:
NR " Analyte not reponcd
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
~ell
NuutJer
Date
Sampled
Qtr.
U.:aniun 238
PCI/l
(HDA)
Strontiull 89, 90
PCI/l (HDA)
Plutoniun 239, 240
PCI/l (HDA)
Americiun 21, 1
PCI/L
(HDA)
01-87 10/12/87 4 DRY
01-87 02/10/88 1 5.5 1. 0.5 NR 0.00 !. 0.26 0.01 ! 0.25
01-87 04/11188 1 DRY
01-87 01,/11/88 2 DRY
01-87 07/20/88 3 ...
01-87 10/26/88 I, ...
04-87 05/20/87 1 See total r iH11 ochemi s try.
04-87 05/26/87 2 ...
04,87 07/09/87 3 17.4 1. 2.3 2.1 . 14 !. .73 0.7 .70 !. .86 1.0
04-87 10/14181 4 12 1. 2 NR .06 !. . 11, .02 ! .07
04,87 10/14/87 4
04-87 02/15/86 I 15 1. 2 NR 0.00 !. 0.24 O.OO! 0.11,
04,87 '04/13/88 2 17~ 1 NR 0.00 !. 0.05 0.17 0.00 ! 0.16 0.60
04-87 07/14188 3 14 1. I NR 0.00 !. 0.04 0.00 ! 0.17
04-87 10/201 B8 4 D.:.ta not yel fcceiv.::J
06-B7 0713lJ/81 3 25.3 .!. 3.4 2.0 - .23 . .59 0.6 -0.1, !. 1.6 LS
06-87 08/25/87 3
06-87 10/14187 4
Notes:
tlR = Anal yle nOI rcplirtcd
... = IlIslllficicnl Sail~)le for Rauioclll:lllistry AniJlyscs
."
-------
.
Groundwater Disso ved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
lJe II
NUlber
Ccs il.n 137
PCI/l
Iritiun
PCI/l
(HDA)
Date
Sa/llpled
Qtr.
(HDA)
01-87 10/12/87 I, DRY
01-87 02/10/88 1 WR WR
01-87 04/11/88 1 DRY
01-87 04/11/86 2 DRY
01-87 07120/86 :5 ...
01-67 10/26/88 4 ...
01,-87 OS/20/67 1 See total r.ldiochc/llistry.
01,-87 OS/26/87 2 ...
04-87 07/09/87 :5 WR 777!:5H
01,-87 10/11,/87 I, WR <460
01,-87 10/14/87 I, ...
04-67 02/15/88 1 NR <210
04-87 04/13/86 2 WR <220 220
04-87 07/14/88 :5 WR 210
04-67 10/20/88 4 Data not yet reccived
06-87 07/30/87 :5 NR <540
06-87 08/25/87 :5 ...
06-87 10/14/87 4 ...
Notcs;
NR = Analytc not rcpL"tcd
... = Insufficient Sample for Radiochcmistry Analyscs
-- -:"
.-
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
Uell Dale Gross Alpha Gross Bela Uraniun 211, 214 UraniUli 215
NUlber Sallipl ed QI r. PCI/l (HDA) PCl/l (HDA) PCI/l (HDA) PCI/l (HDA)
-
06-87 10/14/87 4 ...
06-87 02/17/88 1 1,8 !. 10 25 !. 15 28 !. 1 0.93 !. 0.21
06-87 01,1 B/88 2 ...
06-87 07/14/88 1 ...
06.87 10/26/88 4 DRY
41-81 12/18/87 4 71, !. 11, 82 !. 12 20 !. 4 .51 !. .27
41-87 02/22188 1 29 !. Ji, 14 !. 24 20 !. 1 4.3 !. 0.9
41-87 04/11/88 2 29 !. 12 11 !. 18 1,0 15 !. 1 0.51 !. 0.08
41.87 01/20/88 1 21 !. I, 21 !. I, 18 !. 2 0.57 !. 0.11
41-87 10/11/88 4 ...
1,4-87 11/11,/87 I, DRY
41,-87 02/22/t!8 1 DRY
44-87 01,/18/88 2 DRY
1,4.87 01/20/88 1 DRY
1,1,-87 10/26/86 I, DRY
1,9-87 11/18/87 I, DRY
Notes:
NR = An"l yl e nul ICpUI t <:(1
... = Insufficient S""~Jle fur R"diUl:II<:lIIi~lfY Analyses
.
-------
.
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 IIILLSIDE
IJe II
NUliber
Ur an i un 238
PCI/l
Stront iun 89, 90
PCI/l (HDA)
Plutolliun 239, 2~0
PCI/l (HDA)
Date
Sampled
Olr -
(HOA)
..
Americiun 21,1
PCI/l
(HDA)
06-1i7 10/14/67 ~ ...
06-67 02117/66 1 2~ !. 3 NR 0.00 ! 0.20 0.00 ! 0.11
06-87 0~/n/86 2 aaa
06-87 07 /1~/88 3 aaa
06-87 10/26/66 I, DRY
~3-67 12/18/67 I, 17 ! ~ <1.0 0.00 !. .16 .68 NR
i,3-67 02/2211i1i 1 20 !. 3 NR 0.00 !. 0.23 NR
i,3.67 0i,/11/86 2 12 !. 1 NR 0.01 !. 0.06 0.17 NR
~3-67 07/20/88 3 16 ! 2 NR 0.00 !. 0.01, 0.00 ! 0.09
i,3-67 10/17/88 i, ...
i,1,-87 11/11,/87 i, DRY
i,i,-67 02/22/61i 1 DRY
~
i,1,'87 01,/16/68 2 DRY
i,i,'67 07120/88 3 DRY
i,1,-67 10/26/66 i, DRY
t,9-1i7 11/16/67 t, DRY
NOles: NR = Analylc 1101 I "por \"d
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT TilE 881 HILLSIDE 11
Yell Date Cesil.n 137 J r i t i uu
Nlluber Sau4J1 ed Otr. PCl/l (HDA) PC III (HDA)
-- ----~--
0(,-117 10/11,/1.1/ I,
06-87 021 17/li8 1 NR <210
06-87 0'/13/88 2 ...
06-87 07/1'/88 3 ...
06-87 10/26/88 I, DRY
'3-87 12/11i/87 ' NR <220
'3-87 02/22/88 1 NR -210
1,3-87 01,/11/88 2 NR <220 220
1,3-87 07/20/88 3 NR 22U
I,j-87 10/17/1.18 I, ...
1,1,-87 11/11,/87 I, DRY
1,1,-87 02/22/li8 1 LIllY
1,1,-87 01,/18/88 2 DRY
1,1,-87 07/20/88 3 DRY
1,1, -87 10/26/88 I, DRY
1,9-87 11/11i/87 I, DRY
NOleS:
NR ; Ana' yl e nul 1"''1'')1 I cd
... ; Insullicicnl Sanple 10'- RadluchclIIl$I'"y Analyses
'It
-------
I
..
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT 'l'UE 881 HILLSIDE
Uell
Nunber
Date
Sanpl ed
(HOA)
PC 1/ l
(HDA)
PCI/l
(HOA)
UranillD 235
PCI/l
(HOA)
atr.
l...oss Alpha
I'CI/l
Gross Beta
Uraniun 233, 231,
1,9-87 02/17/88 1 DRY
1,9-87 01,/13/88 2 DRY
1,9-87 01,/13/88 2 DRY
1,9-87 07/18/88 3 ORY
1,9-87 10/21/88 I, DRY
50-87 11/18/87 l,
50-87 11/18/87 I, ...
50-87 02/ 17/88 1 DRY
50-87 01,/13/88 2 DRY
50-87 07/18/88 3 DRY
50-87 10/21/88 I, DRY
51-87 11/25/87 l, DRY
51-87 02/12188 1 ORY
51-87 01,/18/88 2 DRY
51-87 07/18/88 3 DRY
51-87 10/21/8/1 l, DRY
52-87 11/23/87 l, 70!. 13 76 !. 11 21 !. 2 .79 ~ .15
NOles: NR = Analyte 1\1)1 repul ted
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
Yell Date LJr an i 1111 238 Strontiull 89, 90 Plutonhln 239, 21,0 AmericiUII 21,1
Nllaver Sampl cd Qtr. PCI/l (HDA) PCI/l (HOA) PCI/l (HOA) PCI/l (HOA)
-
.
1,9-87 02/11/88 1 OR'"
1,9-87 01,/13/88 2 OR'"
1,9-87 01,/13/88 2 OR'"
1,9-87 07/18/88 3 OR'"
1,9-87 10/21/88 l, OR'"
50-87 11/ 1U/81 l, ...
50-87 11/18/87 I, ...
50-87 02/17/88 1 OR'"
50-87 01,/1 3/88 2 OR'"
50-87 07/18/88 3 OR'"
50-87 10/21/88 I, OR'"
51-87 11/23/87 I, OR'"
51-87 02/12/88 1 OR'"
51-87 01,/18/88 2 DR'"
51-87 07/18/88 3 OR'"
51-87 10/21/88 I, DRY
52-87 11/23/87 l, 15 !. 2 <1.0 0.00 !. .28 1.1 0.00 !. .33 2.1
Notes:
NR = Analyte not reported
... = Insufficicnt Si:ullple for Radiochcmistry Analyses
"
-------
-
Groundwater Disso ved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
lJe II
NUlver
Cesitlll U7
I'CI/l
(tiDA)
I ri t iUIi
Date
Sallipl cd
(tiDA)
PCI/l
Qlr.
49-87 02/17/88 1 DRY
49-87 DI,/1~/88 2 DRY
49-87 04/13/88 2 DRY
49-87 07/18/88 3 DRY
49-87 10/21/88 I, ORY
50-87 11/ 18/87 I, ...
50-87 11/18/87 I, ...
50-87 02/17/88 1 DRY
50-87 0l,/U/88 2 DRY
50-87 07/18/88 3 DRY
50-87 10/21/88 I, DRY
51-87 11/2~/87 I, DRY
51-87 02/12/1J1J 1 ORY
51-87 04/18/88 2 DRY
51-87 07/18188 3 DRY
51-87 10/21/88 I, DRY
52-87 11/23/87 I, NR <540
Noles: NR = Analylc nOI I cp()rI~'d
... = Ins..1 I ic iell! S.lIIplc 101' R.i,hochellllsll y Analyses
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT TilE 881 IIILLSIDE
~cll
NuntJcr
Gross Alpha
PCI/l
Gross Bela
PCI/l
UraniUD 2B, 2JI,
PCI/l (HDA)
Date
Sampl cd
(Hr.
(/'IDA)
(HDA)
UraniUli 235
PCI/l
(HOA)
52-87 11/2J/87 I, ...
52-87 U2/12/88 1 1,0 !. 16 17 !. 2j 1,.7 ! 0.7 0.19 !. 0.12
52-87' 01,118/88 2 1,6 ! U J2 ~ 18 1,0 29 ~ 3 0.80 !. 0.11,
52-87 07/18/88 3 39 1. 5 21 ! I, 28 ! 3 0.53 !. 0.22
52-87 10/18/88 I, Oala nol yet reee i 'Wed
5J-87 11/18/87 I, ...
5J-87 11/18/87 I, ...
53-87 02/10/88 1 ORY
53-8. 01,111/88 2 ...
53-87 07/18/88 3 DRY
51-87 10/21188 I, DRY
51,-!!7 11/18/87 I,
51,-87 11 /18/87 I,
51,,87 11/18/87 I,
51,-87 02/10/66 1 DRY
51,,87 01,/11/88 2 ...
51,-87 07/18/88 3 ORY
Nou::S:
Nil = Analyte nut Il:p"rted
... = Insufficient Sah.j)le for lIadlochelillst. y Analyses
't
-------
,
,
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
~ell Date Uraniun 218 Stront illn 69, 90 Plutoniun 219. 2~0 AmericiUII 241
Nunber Sampled Qtr. PCI/l (110A) PCI/l (I1OA) PCI/l (HOA) PCI/l (I1OA)
52-67 11/25/87 I, ...
52-67 02/12/88 1 1,.0 1. 0.6 NR 0.00 1. O. U O.OO! 0.11
52.87 01,/18/86 2 21 1. 2 NR 0.00 1. 0.01 0.15 0.02 ! 0.16 0.79
52-67 07/18/88 3 19 1. 2 NR', 0.01 1. 0.08 0.01 ! 0.17
52.67 10/18/88 I, Data lIot yel '-eLClvcd
53-87 11/18/87 I, ...
53-67 11/18/87 ~ ...
53-67 02/10/811 1 Din
53-87 01,/11/88 2 ...
51-87 07/1U/88 3 DRY
53-87 10/21/88 ~ DNY
51,-87 11/18/87 I, ...
5~-87 11/18/87 ~ ...
5~-87 11/18/87 ~ ...
5~-87 02/10/118 1 ORY
5~-87 01,/11/88 2 ...
5~-87 07/1U/U8 3 DRY
Notes:
NR = Analyte nOI reponed
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
\Jell
NlIhber
CesillU 137
I'CI/l
Date
S,,"~)I cd
atr.
(HOA)
I r it iuu
PCI/l
(HOA)
52.117 II/n/lil l,
52.111 02112/1111- 1 NR <210
52-87 04/18/88 2 NR <210
52-87 07118/88 3 NR 200 .
52-87 10118/118 4 Data nut yet re(c.llcd
53-87 11/18/87 4 ...
53-87 11118/87 4 ...
53-117 UUIII/lil! 1 OI
-------
. .
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT TilE 881 HILLSIDE
Yell Date Gross A Il'ila Gross Bela Uraniun 2H. 211, Uraniun 215
NU1ber San~1 cd Qtr. PCl/l (HDA) PC 1/ l (HDA) PCl/l (HDA) PCl/l (HDA)
51,-87
10/21/88
I,
DRY
NOlC,;;
NR : Allalyle lIol repofled
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
\lei I Dale Uranil.u 258 SlrurHiuu 89, 90 Plulonhlu 259, 21,0 Americiun 2101
NUlllver S.lllipled Qlr. PCI/l (tlDA) PCI/l (tlDA) PCI/l (tlDA) PCI/l (tlDA)
---------
510-87 10121/8/1 I, OilY
NOles:
NR = An.llylc nul '""jJon"d
... = InsII" icicnl S;III~)le for Radlo,hclllist'-y Analyses
t
-------
.
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS AT THE 881 HILLSIDE
\Je II
NUliuer
54-87
Notes:
Date
Sallipl ed
Cesiuli 131
PCI/L
Iri t iUIi
PCI/L
(ttOA)
Qtr.
(HDA)
10/21/88
4
DRY
NR = Analyte not reportcd
... = Insufficient Sall~lle lor Radlochcmistry Analyses
-------
.
SECTION 2
..
VOLA TILE ORGANIC COMPOUND, DISSOLVED METALS,
INORGANIC COMPOUND, AND RADIOCHEMISTRY ANAL YTICAL RESULTS
FOR THE 881 FOOTING DRAIN DISCHARGE
WELLS/STATIONS IN THIS GROUP:
SW-45
,..
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN, COLORADO
-------
.
BUILDING 881 FOOTING DRAIN DISCHARGE
VOLA TILE ORGANIC RESULTS
.
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN. COLORADO
-------
.
.
Surface Water Volatile organic Results
For stations at Rockwell
(Rocky Flats)
BUILDING 881 FOOTING DRAIN DISCIIARGE
Sialion Dale Chiaro aruwu Vinyl Chiaro
NuutJer Sauipl ed air. nIl1111i1111: mdhall" Chi arid" ethane
lIy/1 lIy/1 11\.1/1 uy/I
- ------- --- _._-------- ----
SY-I,S OS/26/87 /ji{ NR Nil Nil
SY-I,5 11/17/87 lUll lUU 10 U IOU
sy-I,5 06/2U/88 WII 1011 1011 IOU
SY- I, 5 01,/01,/89 10 II IOU 10 U IOU
SY-I,5 05/18/89 IOU 10 U 10 II 10 U
sy-I,5 05/30/89 (Jill" nOI yel fCleivl:'J
SY-I,5 U6/21/89 Oala nOI yel received
SII-I,5 07/18/89 Oal
-------
surface Water Volatile organic Results
For stations at Rockwell
(Rocky Flats)
BUILDING 881 FOOTING DRAIN DISCHARGE
Station Date
Number Sanipled Qtr.
SII-1,5 OS/26/87
511-1,5 11/17/87
511-1,5 06/28/88
511-1,5 01,/01,/89
SII-1,5 05/18/89
SII-1,5 0500/89
SII-1,5 06/21/89
511-1,5 01/18/89
SII-1,5 08/16/89
1,1- 0 i-
chloro
ethene
ug/I
I, U
5 u
5 lJ
5 lJ
5 u
Oat a not
Data /lot
Data not
Data not.
NR = Analyte not reported
J = Present below detection limit
I, I-Oj-
chloro
ethane
ug/l
NR
5 u
5 lJ
5 u
5 u
yet received
yet received
yet received
yet received
Iranl-I,2- 1.2-Di- 1,I,I-Tri
Dichloro chloro chiaro
ethene Chloroform ethane 2-Butanone ethane
uy/I ug/I ug/I ug/l ug/I
NR I, u t, u NR " U
NR 5 U 5 U 10 u 5 U
5 u 5 u 5 u 10 U 5 U
Nil 5 U 5 u 10 U 5 U
NR 5 U 5 u 10 u 5 U
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not n~t
N = Batch spike not in 80-120X range
E = Estimated value
R = Data rejected during validation
...
-------
.
.
Surface Water Volatile organic Results
For stations at Rockwell
(Rocky Flats)
BUILDING 881 FOOTING DRAIN DISCHARGE
ug/l
1,2-Di- Cis-l,1- Dibrolllo
cliloro Diehloro Irichloro chi oro
propane propene ethene methane
ug/l u!l/l ug/l ug/l
NR NR NR 11, NR
5 U 5 u 5 u 8 5 U
5 U 5 U 5 U 5 U 5 U
5 U 5 U 5 U 5 U 5 U
5 U 5 U 5 U 5 U 5 U
Carlx>n
Station Date 1etra Vinyl
NUlver Sampled atr. chloride Acetate
ug/l ug/I
SY-1,5 OS/26/87 I, U NR
SY-1,5 11/17/87 6 10 U
SY-45 06/28/66 5 U IOu
SY-45 04/04/89 5 LJ 10 u
SY-1,5 05/18/89 5 U IOU
SY-1,5 05/10/89 Data not yct rcccivcd
SY-1,5 06/21/89 Data not yet reeeivcd
SY-45 07/18/89 Data not yct receivcd
SY-1,5 08/16/89 Data not yet reccived
01'01110
dichloro
mcthane
.;I
NR = Analyte not n~portcd
J = Present below dctect Ion I ilill t
U = Analyzcd lJul not detected
B = Prescnt In t..lJoratory blan~
. = Holding time not /IIet
N = Batch spike not in 80-120X range
E = Estimated value
-------
Surface ~ater Volatile organic Results
For stations at Rockwell
(Rocky Flats)
BUILDING 881 FOOTING DRAIN DISCIIARGE
Station
Number
I, 1,2-1 r i
chiaro
ethilf\e
Benzene
ug/I
Date
Sampled Utr.
uglt
- ----
SY-1,5 OS/26/87 4 U NR
SY-1,5 11/17/87 5 U 5 U
S~/-45 06/28/88 5 U 5 U
Sy-1,5 04/04/89 5 U 5 U
SY-1,5 05/18/89 5 U 5 U
SY-1,5 05/30/89 Oi.llil not yet received
SY-1,5 06/21/89 Oi.lt~ not yet received
SY-1,5 07/18/89 Oat a not yet received
SY-1,5 08/16/89 Data not yet received
Irall~-1.3- 2-(hloro l, - Hethyl -
Dichlaro ethylvinyl 2-penta
propene ether Bromoform nune 2-Hexanone
ug/I ug/I ug/I ug/I ug/I
NR NR NR NR NR
5 U NR 5 U 10 U 10 U
.
5 U 10 U 5 U 10 U 10 U
5 U NR 5 U 10 U 10 U
5 U NR 5 U 10 U 10 U
NR = Analyte Iwt reported
J = Present below detection limit
U = Alli.llyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-1204 range
E = Estimated value
R = Data rejected during validation
..
-------
.
.
Surface Water Volatile organic Results
For stations at Rockwell
(Rocky Flats)
BUILDING 881 FOOTING DRAIN DISCHARGE
Nuuber
Sallpled atr.
ethcne
11\1/1
I, 1,2.2-
letrachloro
ethane
Station Date
letra
chiaro
11\1/1
loluene
u\l/1
Chiaro Ethyl lotal
benzene benzene Styrene )(ylenes
uy/I u9/1 ug/l ug/l
NR NR NR NR NR
12 5 u 5 u 5 u 5 u
5 U 5 u 5 u 5 U 5 u
5 U 5 U 5 u 5 U 5 U
5 u 5 U 5 u 5 U 5 u
- ----
S\.I-I,5 OS/26/87 128 NR
S\.I-I,5 11117/87 Ie 5 u
S\.I-I,5 06/28/88 3 J 5 u
S\.I-I,5 01,101,189 2 J 5 u
S\.I-I,5 05/18/89 8 5 u
5\.1-1,5 05/30/89 Data not yet receivcd
S\.I-I,5 06/21/89 Data lIot yet received
S\.I-I,5 07118/89 Data not yet received
5\.1-1,5 08116/89 Data lIot yet rcceived
NR = Analyte not reported
J = P.-C$cnt below detect ion I ilill t
U = Analyzed but not.detected
B = Present in laboratory blill~
. = Holding tin~ not met
N = Batch spike not in 80-1204 range
E = Estimated value
-------
.
BUILDING 881 FOOTING DRAIN DISCHARGE
DISSOLVED METAL RESULTS
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. COLDEN. COLORADO
-------
.
.
Surface Water Dissolved Metals Results
For Stations at Rockwell
(Rocky Flats)
BUILDING 881 FOO'rING DRAIN DISCHARGE
Station Date Alunim.tn Ant imony Arsenic Bar i un Beryl! iUIi Cadnh.. Calciun
NUlber Sallpled Qtr. (AI). diss. (Sb). diss. (As), diss. (Ba), diss. (Be), diss. (Cd), diu. (Ca), diss.
1119/1 1119/1 Pig/ I 1119 / I 1119 / I mg/l mg/I
----- - - -- ------- ----- --- - -- ----
SIJ-45 OS/26/87 NR 0.06 U 0.01 U NR NR 0.005 U NR
SIJ-45 11/17/87 0.0436 0.02 U 0.005 U O. 1547 0.005 U 0.0017 85.3425
SIJ.45 06/28/88 0.200 U 0.060 U 0.010 0.200 U 0.005 U 0.005 U 78.0
NR = Analyte not reported
J = Present below detection lilllit
U = Analyzed but not detected
B = Present in laboratory blank
* = Holding time not met
N = Batch spike not in 80. 120X range
-------
Surface Water Dissolved ~etals Results
For stations at Rockwell
(Rocky Flats)
BUILDING 881 FOO'l'ING DRAIN DISCHARGE
Station Date Cesiun Chromiun Cabal t Copper I roo lead lithiuu
Nlilber Sanpled °Qtr. (Cs), diss. (Cr), diss. (Co), diss. (Cu), diss. (Fe), diss. (Pb), diu. (lO, diu.
mgll ffig/l mg/l 11191 I mg/l II1II11 BIg/I
--. ----- -------
SU.1,5 OS/26/87 0.2 U HR NR NR NR 0.005 U 0.01
SU.1,5 11/17/87 0.02 U 0.0100 U 0.0220 U 0.0111 0.0279 0.005 U 0.01 U
SU.1,5 06/28/88 NR 0.010 U 0.050 U 0.025 U 0.100 U 0.005 U NR
NR = Analyte not reported
J = Present below d~tection limit
U = Analyzed but not detected
H = Present in laboratory blank
. = Holding time not met
N = Hatch spike not in 80. 120X range
E = Estimated value
.
-------
.
Surface Water Dissolved Metals Results
For stations at Rockwell
(Rocky Flats)
BUILDING 881 FOO'l'ING DRAIN DISCHARGE
Station Date HiJgnesiun Hanganese Hercury "01 ybdeouu Nickel Potassiun Seleniun
NlXIoer Sampled Qtr. (Hg), diss. ("n), diss. (Hg), diss. ("0), diss. (Ni), diss. (I( ), diu. (Se), diss.
019/1 OIg/l 009/1 1119/1 111911 1119/1 1119/1
- ---- --- ----- ---
SY-45 OS/26/87 NR NR 0.0002 U HR NR 5.0 U 0.005 U
SII-45 11/11/87 19.0212 0.0060 0.0002 U 0.0220 U 0.0370 U 3.8 0.018
SII-45 06/28/88 21.0 0.015 U 0.90 NR 0.040 U 5.0 U 0.005 U
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present in laboratory blank
* = Holding time not met
N = 8atch spike not in 80-120X range
-------
Surface Water Dissolved Metals Results
For Stations at Rockwell
(Rocky Flats)
BUILDING 881 FOO'l'ING DRAIN DISCHARGE
Stat ion Date Silver Sodiun Tin Strontiun Thall iun VanadiUII Zinc
Nurber San~led Qtr. (Ag), diss. (Na), di:;s. (Sn), diss. (Sr), diss. (II), diss. (V), diu. Un), diu.
IIIg/1 019 II 019/ I mg/I mg/I mg/l 111911
- ---_.~-- --- --. ----- -----_._,-
S~H.5 OS/26/87 NR NR NR NR 0.01 U IIR 0.05 U
S~H5 11/17/87 0.0076 U I, I. 7611, NR 0.6l, II 0.01 U 0.21,0 U 0.01,26
SIJ-I,5 06/28/88 0.010 U 1,6 NR 0.7 0.010 U 0.050 U 0.6
-"
NR : Analyte not reported
J : Present below detection limit
U = Analyzed but not detected
B : Present in laboratory blank
. : Holding time not met
II : Batch spike not in 80-1201 range
E G Estimated value
-------
BUILDING 881 FOOTING DRAIN DISCHARGE
INORGANIC COMPOUND RESULTS
INTERIM REMEDIAL ACTION PLAN FOR 'l'RE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN, COLORADO
-------
Surface Wa~ r Inorganic Results
For Stations at Rockwell
(Rocky Flats)
BUILDING 881 F'OO/l'ING DRAIN DISCHARGE
Nitrate+
Station Date Total Dissolved Solids Chloride Nitrite-Nitrogen Sulfate HC03.
NUIDer Sliupled HG/l HG/l HG/l HG/l HG/l
S\J1,5 05/26/87 1,56 .71,.1 8.50 44.0 216
S\J45 11/17187 INSUffiCIENT SAMPLE fOR INORGANIC ANALYSIS
S\J1,5 06/28/88 464 77 8 56 232
Notes:
NR = Analyte not reported
J = Present below detect ion I imi t
U = Analyzed but not detected
B = Present in laboratory blank
-------
BUILDING 881 FOOTING DRAIN DISCHARGE
TOTAL RADIOCHEMISTRY RESULTS
INTERIM REMEDIAL AC'I'ION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN. COLORADO
(
-------
08/25/89
Peg8 1
TOTAL RADIOCHEMISTRY RESULTS SUMMARY
FOR SURFACE ~ATER AT Rockwell (Rocky Flats)
Nl.ilD!r of S8q)les
Analyte
/l4uinua
Value
/l4inillUll
Value
Above
Detection
Below Not
Detection Reported
Me8l'l
Value-
BUILDING 881 FOOTING DRAIN DISCHARGe
GrC8s Alph8 (pci/l) 13 : 15 13 : 18 1 0 1 13
Gross Beta (pci/l) 14 : 31 14 : 31 1 0 1 14
Uranium 233, 234 (pci/l) 5.5 : 1.9 4.96 : 0.439 2 0 0 5.230
uranium 23S (pci/l) 0.0 : .31 0.0 : .31 1 .0 1 0.000
Uraniun 238 (pci Il) 4.1: 1.1 3.84 : 0.416 2 0 0 4.270
Strontium 89, 90 (pci/l) 1.78 : 1.78 : 1 0 1 1.780
Plutonium 239, 240 (pci/l) 0.0312 : 0.0824 0.0 : .55 2 0 0 0.016
Americiun 241 (pci/l) 0.0 : 1.2 0.0 : 1.2 1 0 1 0.000
Cesium 131 (pci/l) <0.3 : <0.3 : 1 0 1 0.000
Tritium (pci/l) 63a : 315 <110 : 2 0 0 319
-------
Surface Water Total Radiochemistry Results
for statioQs Units at Rocky Flats Plant
BUILDING 881 FOO'rING DRAIN DISCHARGE
Station Oate Glu,;,; Alpha (;rU$S Bet.! Ur.!ni,.u 2B, 2 it. UranilMll 23S
N'luber Sampled I'C i /1 pC III pC ill pCi/l
-- ---------- --.- --. ---- ---------- -------------
SW(J45 OS/26/8/ 1 S . III 14 . 31 5.5 . 1.<,1 0.0 ~ .37
- - -
SW045 11/17/87
5W045 06/28/88 /j/( /j/( 1,.96 ~ 0.1,39 0.2 NR
Notes:
Nil " Anal}'te not reported
-------
Surface Water Total Radiochemistry Results
for stations units at Rocky Flats Plant
BUILDING 881 FOOTING DRAIN DISCHARGE
Station Oatc 111<1111'"" 258 ~tn)f)lllJUI 89,90 P IUI ani '.11 23<,1 AIII~r icil.lR 21, 1
NI"lIb~r SanijJl I!tI pC i /I pC 1 /I pCi/i pCi/i
--- ---------
SIJ045 05/26/87 /'.7 t 1.7 1./8 0.0 . .55 0.0 ~ 1.2
-
SIJ045 11/17187 iii..
SIJ045 06128/81.1 3.84 t O./' 16 0.3 1/1/ 0.0312 ~ 0.0!!2/' 0.1 NR
-
.
Notl!s:
NR = Analytc not ,",:pul"lcd
-------
Surface Water Total Radiochemistry Results
for Stations Units at Rocky Flats Plant
BUILDING 881 FOOTING DRAIN DISCIIARGE
Stalion Dilte Ccs i.JlII 137 'r i I ill"
N IMI&b~ r S ililip I cLl pCi/1 pCi/1
---- -- --_._-.- -,---- ------
!.~U4) O)/26/IJI -U.j '110
S~OI,) 11/17/IJ7
S~OI,) 06/28/IJIJ NR 6j8 ! 31) ~uo
.
Nules:
NW = AII~ilYlc 1101 rqh)llcd
-------
BUILDING 881 FOOTING DRAIN DISCHARGE
DISSOL VED RADIOCHEMISTRY RESULTS
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN. COLORADO
-------
08/25/89
Page 1
DISSOLVED RADIOCHEMISTRY RESULTS SUMMARY
FOR SURFACE WATER AT Rockwell (Rocky Flats)
Number 01 Samples
ANilyte
/4uinun
Value
MinillUl
Value
AbcMt
Detection
BeLow Not
Detection Reported
Mean
VaLue-
BUILDING 881 FOOTING DRAIN DISCHARGE
Gross Alpha (pci/l) 13.4 : 5.11 13.4 : 5.11 1 0 0 13
Gross Beta (pci/l) 15.1 : 5.38 15.1 : 5.38 1 0 0 15
Uranium 233, 234 (pci/l) 5.79 : 0.818 5.79 : 0.818 1 0 0 5.790
Uranium 235 ( ) 0 0 1
Uranium 238 (pci/l) 4.38 : 0.735 4.38 : 0.735 1 0 0 4.380
Strontium 89, 90 ( ) 0 0 1
Plutonium 239, 240 (pci/l) 2.57 : 0.733 2.57 : 0.733 1 0 0 2.570
Americium 241 ( ) 0 0 1
Cesium 137 ( ) 0 0 1
Tri tium ( ) 0 0 1
-------
Surface Water Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
BUILDING 881 FOO'fING DRAIN DISCHARGE
Station
NUIlLer:
Date
Sall~1 cd
Cross Alpha
PCI/l
(HDA)
Gross Beta
Uraniuu 231, 234
PCI/l (HDA)
(HDA)
Uraniuu 235
PCI/l
PCI/l
(HDA)
S~45 OS/26/87 ...
S~45 11/17/87 ...
S\l45 06/28/88 13.4 ~ 5.11 6 15. I ~ 5.311 8 5.79 ~ 0.818 0.1 NR
Notes:
NR = Anal yte not reporleel
-------
Surface Water Diss - ved Radiochemistry Results
for Regulated units at Rocky Flats Plant
BUILDING 881 FOOTING DRAIN DISCIIARGE
Station
Number
51.145
SI.I45
51.145
Notes:
Date
Sampled
Uranillu 23B
PlutoniliD 219, 240
PCl/l (HDA)
Stront illu 89, 90
PCl/l (HDA)
PCl/l
(HOA)
05/26/81
11117/B7
06/28/88
4.38 ~ 0./j5 0.2
NR
2.57 ~ 0.713 0.6
NR = Analyle nOI I epllned
.u = Insufficiem SiJ"iple for Radlocheluisu-y Analyses
Amer i ci UIII 21, 1
PCl/l
(HOA)
-------
Surface Water Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
BUILDING 881 FOOTING DRAIN DISCHARGE
Station Date
NlJjllLer Salllpi cd
---
SY45 OS/26/87
SI/45 11/17/87
SI/45 06/28/88
CCSil~1I 137
T .-i t i un
PCI/l
(HIJA)
PCI/l
(HUA)
----------. --
--_.-
...
NR
NR
Notes:
NR = Analyte nut reported
-------
. SECTION 3
VOLA TILE ORGANIC COMPOUND, DISSOL VED METALS,
INORGANIC COMPOUND, AND RADIOCHEMISTRY ANALYTICAL RESULTS
FOR THE ALLUVIAL WELLS DOWNGRADIENT
OF THE 881 HIl.LSIDE
WELLS/ST A TIONS IN THIS GROUP:
64-86
65-86
66-86
69-86
02-87
47-87
48-87
55-87
..
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSmE AREA
ROCKY FLATS PLANT. GOLDEN, COLORADO
JANUARY 199o
-------
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIQE
VOLA TILE ORGANIC RESULTS
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSmE AREA
ROCKY FLATS PLA."iT. GOLDEN. COLORADO
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF TilE BBl HILLSIDE
Yell Date (hi 01 a 8romo Vinyl Chiaro "ethylene Carbon
NUliber Sall~)1 ed Otr. methane methane Chlo/-.d" ethane Chi oride Acetone Disulfide
U9/1 U9/1 ug!l ug!l ug/I ug/l ug!l
----
61.-86 0{,/29/87 1 NR NR NR NR NR NR NR
61.-86 OS/28/81 2 NR NR NR NR NR NR NR
61.-86 07/16/87 .3 Nil NR NR NR NR NR NR
61.-86 10/12/81 {, DRY
61.-86 02/17/88 1 IOU IOU IOU 10 U 5 U 10 U 5 U
61.-86 0{,/11/88 2 IOU 10 U IOu 10 U 5 U 10 U 5 U
6{'-86 07/B/88 3 OilY
61.-86 10/21/88 {, DRY
61.-86 0{,/2{,/89 2 IOU 10 U 10 U 10 U 5 U IOU R 5 U
61.-86 05/31/89 IOU IOU 10 U 10 U 5 U 2 J 5 U
61.-86 07/10/89 Data not yet received
65-U6 05/ B/87 1 Nil NR fj~ NR NR NR NR
65-86 OS/28/87 2 Nil Nil Nil NR NR NR NR
65-86 07/16/87 3 Nil NR Nil NR NR Nil NR
65-86 09/09/87 3 NR UR IIR NR NR NR NR
65-86 10/19/87 {, DRY
b5-U6 02129/t!6 1 IUU IOU IOU 10 U 8 10 u 5 U
65-86 04/18/88 2 10 U 10 U 10 U 10 U 5 U 10 U 5 U
NR = Analyte /lot reported
J = Present below detecllon limit
U = An;,1 Yled but Lot deteCted
B = P.-cscnt in laboratory blank
. = Itolding time not met
N = Batch spike not in 80-120% range
E = Estimated value
-------
Groundwater Volatile Organic Results
For Wells at Rockwell
(Rocky Flats)
ALLQVIAL WELLS DOWNGRADIENT OF 'I'IIE 881 IIII.LSIDE
1,1-01- I, I-D i -
Yell Date chi oro chi oro
NUlver Sanpl ed Otr. ethclle ethalle
11\.1/1 ug/I
64-86 04/29/87 1 4 U NR
64-86 OS/28/87 2 4 U NR
64-86 07/16/87 3 4 U NR
64-86 10/12/87 4 OilY
64-86 02/17/88 1 5 U 5 u
64-86 04/11/88 2 5 U 5 u
64-86 07/13/88 3 DRY
64-86 10/21/88 4 DRY
64-86 04/24/89 2 5 U 5 U
64-86 05/31/89 5 U 5 u
64-86 07110/89 Data not yet received
'r.J/1~-1,2.
Dichloro
ethene
ug/I
NR
NR
NR
NR
Nil
Nil
. NR
1,2-Di - 1,1,1-1ri
chloro chloro
Chloroform ethane 2-Butanone ethane
ug/I ug/l ug/I ug/I
4 U " U NR 4 U
4 U " U NR 4 U
4 u " U NR 4 U
5 u 5 U 10 U 5 U
5 u 5 U 10 U 5 u
5 U
5 U
5 U
5 U
10 U
10 U
5 U
5 U
65-86 05/13/87 1 I, U NR NN 4 U 4 U NR 4 U
65-86 OS/28/87 2 I, U Nil NR 4 U 4 U NR 4 U
65-86 07/16/87 3 I, U Nil NR " U 4 U NR 4 U
65-86 09/09/87 3 5 U NR NR 5 U 5 U NR 5 U
65-86 10/19/87 4 DRY
.
65-86 02/29/88 1 5 U 5 U NR 5 U 5 U 10 U 5 U
65-86 04/18/88 2 5 U 5 U NR 5 U ') U 10 U ') U
NR = Analyte not reponed
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 60-120. range
E = Estimated value
-------
Groundwater Volatile Organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
(iulJuli UrullOo 1.2-Di - Cis-I.3- Dibromo
~ell Date letra Vinyl dichloro chiaro Dichloro Irichloro chloro
Nlnber Sampled Qlr. chloriuc Acd a I e mdhane propane propene ethene methane
u~/I uy/l uy/l uy/l ug/l ug/l ug/I
61,-86 01,/29/87 1 I, U NR NR NR NR I, U NR
6{,-86 OS/28/87 2 I, U NR NR NR NR I, U NR
6{,-86 07/16/87 3 I, U Nil NR NR NR I, U NR
6{,-86 10/12/87 I, DRY
6{,-86 02/17/88 1 5 U 10 U 5 U 5 U 5 u 5 u 5 U
6{,-86 01,/11/88 2 5 U 10 U 5 U 5 u 5 U 5 U 5 U
61,-86 07/n/88 3 DRY
6{,-86 10/21/88 I, DRY
61,-86 01,/21,/89 2 5 U lOll R 5 u 5 u 5 U 5 u 5 U
61,-86 05/31/89 5 U 10 U 5 U 5 u 5 u 5 U 5 U
6{,-86 07/10/89 Data not yet received
65-86 05/n/87 1 " U Nil NR NR NR I, U NR
65-86 OS/28/87 2 " U NR NR NR NR I, U NR
65-86 07/16/87 3 " U NR NR NR NR I, U NR
65-86 09/09/87 3 5 U NR NR NR NR 5 U NR
.65'86 10/19/87 " URY
65-86 02/29/88 I 5 U IOU 5 U 5 U 5 U 5 u 5 U
65-86 01,/18/88 2 5 U 10 U 5 U 5 u 5 u 5 u 5 u
NR = Analyte not reponed
J = Present below delection limit
U = Analyzed but not de tee led
8 : f"'esenl in laboratory bl ank
* = Holding time not met
N = 8atch spike not in aO-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
1,I,2-11i I riln;>-I, 3- 2-(hloro I, -Hethyl-
~cll Date chi oro Dichloro ethylvinyl 2-penta
HUliver Sampled (Hr. elh,me Benzene propene ether Bromoform none 2-Hexanone
u~/I uy/l ug/I u9/1 ug/l ug/l ug/l
- _..------ -------- -_._----
61,-86 01,/29/87 1 I, U HR HR HR HR HR HR
61, - 86 OS/28/81 2 I, u HR HR HR HR NR HR
61, - 86 07/16/87 3 I, U HR HR HR HR NR HR
61, - 86 10/12/81 I, DIU
61, . 86 02/17/88 1 5 u 5 u 5 u 10 U 5 U 10 u 10 U
61, - 86 01,/11/88 2 5 U 5 LJ 5 U 10 U 5 U 10 U 10 U
61, -86 07/B/88 3 DRY
61, -86 10/21/88 I, DRY
61, - 86 01,121,/89 2 5 U 5 U 5 U HR 5 U 10 U 10 U
61, - 86 05/31/89 5 U 5 u 5 U HR 5 U 10 u 10 U
. 61,-86 07/10/89 Oala not yet reee i \{cJ
65-86 051 B/87 1 I, U HR HR HR HR NR HR
65-86 05/28/87 2 I, U HR HR HR HR NR HR
65-86 07/16/87 3 I, U HR HR HR HR NR HR
65-86 09/09/87 3 5 U HR HR HR HR NR HR
65-86 10/19/87 I, DRY
65-86 02/29/138 1 5 U ~ LJ 5 u IOU 5 U 10 U 10 U
65-86 01, /18/ 138 2 5 U 5 LJ 5 u 10 U 5 u 10 u 10 U
HR = Analyte not reported
J = Present below detection limit
U = Anal yzed but not detected
B = Present In laboratory blank
. = Holding time not met
N = Batch spike not in 80-1204 range
E = Estin~ted value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 HILLSIDE
I et fa I, 1,2,2-
Llell Date chiaro leHachloro Chiaro Ethyl lo.tal
NLilber Sa~led Otr. ethene ethane loluene benzene benzene Styrene Xylenes
ug!l ug!l 119/1 u9!1 u9/1 ug/l u9/l
-
61,-86 01,/29/87 1 4 U Nil Nil Nil Nil Nil Nil
64-86 OS/28/87 2 4 U Nil NR Nil Nil Nil Nil
64-86 01/16/87 :1 4 U Nil NR Nil Nil Nil Nil
61,-86 10/12/87 4 OilY
64-86 02/17/88 1 5 U 5 U 5 U 5 u 5 u 5 U 5 U
64-86 04/11/88 2 5 u 5 u 5 U 5 U 5 u 5 u 5 U
64-86 01/ 13/88 :I OilY
64-86 10/21/88 4 OilY
64-86 04/24/89 2 8 J ~ U 5 u 5 u 5 u 5 u 5 U
64-86 05131189 5 U 5 U 5 u 5 U 5 u 5 u 5 U
64-86 07/10/89 Data not yet received
65-86 05/13/87 1 4 U Nil NR Nil Nil Nil Nil
65-86 05/28/87 2 4 U Nil Nil Nil Nil Nil Nil
65-86 07/16/87 :1 4 U Nil Nil Nil Nil Nil Nil
65-86 09/09/87 :1 5 U Nil Nil Nil Nil Nil Nil
65-86 10/19187 4 OilY
65-86 02129/88 1 5 U 5 U 5 U 5 u 5 U 5 U 5 U
65-86 04/18/88 2 5 U 5 U 5 U 5 U 5 u 5 u 5 u
Nil = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-1204 range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 IIILLSIDE
\Jell Date Chloro 111'04110 Vinyl Chloro "ethylene Carbon
NUlber Sall~)1 cd IHr. lIIelhane IIIclhane Chlorid.: ethane Chloride Acetone Disulfide
\J~/I ug/l ug/l ug/l ug/l ug/I ug/l
- - --
65-86 07/19/88 3 DRY
65-86 10/21/88 " DRY
65-86 06/01/1\'.1 lOU lOu 10 U 10 U 5 U 10 u 3 J
65-86 07/20/89 Data not yel f Cl. C i vcd
.
66-86 05111187 1 HR NR NR NR NR NR NR
66-86 05/28/87 2 HR NR NR NR NR HR NR
66-86 07117187 3 DRY
66-86 10/19/87 " DRY
66-86 01d 1/88 1 10 U lOu 10 U 10 u 23 10 u 5 U
66-86 06/02/88 2 10 U 10 U 10 U 10 U 5 u 10 u 5 U
66-86 10/07/88 (JRY
66-86 12/21188 DRY
66-86 06/02/89 OJta nut y.::t rc(civcd
66-86 07120/89 Data nut yet received
69-86
04/29/87
NR
NR
NR
NR
NR
NR
NR
NR = Analyte not reponed
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
* = Holding time not met
N = Batch spike not in 80-120% range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
, .
I
I
I
I, l-Di-
~ell Date chiaro
Nuniber Sampled atr. ethene
LJg/1
65-86 07/19/88 :1
65-86 10/21/88 I,
65-86 06/01/89
65-86 07/20/89
I, l-Di - If ..IIIS - 1 , 2 - 1,2-Di - I, I, 1-1 ri
chiaro Dichiara chiaro chi oro
ethane ethene Chlorotorm ethane 2-Butal1OOe ethane
ug/I ug/l ug/l ug/l ug/l ug/I
DRY
DRY
5 u
5 u
NR
5 u
5 u
10 u
5 u
Data not yet received
66-86 05/11/87 1 I, u NR NR I, U 4 U NR 4 U
66-86 OS/28/87 2 I, u NR NR 4 U 4 U NR 4 U
66-86 07/17/87 1 DRY
66-86 10/19/87 I, DRY
66-86 03/11/88 1 5 u 5 U NR 5 U 5 U 10 U 5 U
66-86 06/02/88 2 5 u 5 U NR 5 U -5 U 10 U 5 U
66-86 10/07/88 DRY
66-86 12/23/88 DRY
66-86 06/02/89 Data not yet received
66-86 07/20/89 Data not yet received
69-86
01,/29/87 1
I, U
NR
NR
I, U
I, U
NR
I, U
NR = Analyte not ,-eported
J = Present below detection limit
U = An
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
Carbun
lie II Date Tetra Vinyl
NUlber Sampled Qtr. chloride Acetate
ug/l ug/l
65-86 07/19/88 3 DRY
65-86 10/21/88 , DRY
65-86 06/01/89 5 U IOU
65-86 07/20/89 Data not yet received
Bromo 1,2-0 i - Ci s-I,]- Oibromo
dichloro chiaro Dichiara Trichloro chiaro
methane propane propene ethene methane
ug/l ug/l ug/l ug/l ug/l
5 u
5 u
5 U
5 u
5 U
66-86 05/11/87 1 , U NR NR Nil Nil " U Nil
66-86 05/28/87 2 , U NR NR Nil Nil " U Nil
66-86 07/17/87 :5 DRY
66-86 10/19/87 4 DRY
66-86 03/31/88 1 5 U 10 u 5 u 5 u 5 u 5 u 5 U
66-86 06/02188 2 5 U 10 U 5 u 5 u -5 U 5 u 5 U
66-86 10/07/88 DRY
66-86 12/23/88 DRY
66-86 06/02189 Data not yet received
66-86 07/20/89 Data lIot yet received
69-86
04/29/87 1
4 U
NR
NR
Nil
Nil
, U
NR
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-1204 range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
1,1,2- Ir I 'rails- 1,3- 2-Chloro 4 -Hethyl-
lie II Date chi oro Dichiara ethylvinyl 2-penta
NUILer San~1 cd Qtr. cthilne Benzene propene ether Bromoform none 2-Hexanone
uy/I ug/l uy/l ug/I ug/l ug/l ug/I
65-86 07/19/88 3 DRY
65-86 10/21/88 I, DRY
65-86 06/01/89 5 u 5 u 5 II NR 5 U 10 u 10 U
65-86 07/20/89 Data not yet received
66-86 05/11/87 1 I, U NR NR NR NR NR NR
66-86 OS/28/87 2 I, U NR NR NR NR NR NR
66-86 07/17 /87 3 DRY
66-86 10/19/87 I, DRY
66-86 03/31/88 1 5 U 5 U 5 II NR 5 U 10 U 10 U
66-86 06/02/88 2 5 U 5 U 5 U 10 U - 5 U 10 U 10 U
66-86 10/07/88 DRY
66-86 12/23188 DRY
66-86 06/02/89 O..llil lIut yel received
66-86 07/20/89 Oal a not yet received
69-86
04/29/87 1
4 lJ
NR
NR
NR
NR
NR
NR
NR = Analyte not reported
J = Present Lelow deteclIOII I imll
U = Analyzed but not delecled
B = Prcsem in laboratory blank
* = Holding time not met
H = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 IIILLSIDE
(Rocky Flats)
1<:IliJ I, 1,2,2-
\Jell Date chloru letrachloro Chloro £lhyl lotal
IIlJIliLer Sampl cd Clt r. cthene ethane loluene benzene benz ene Styrene Xylenes
u'J/1 u'J/I ug/l u9/1 U9/1 ug/l U9/1
--- ------
65-86 07/19/88 3 DRY
65-86 10/21/88 " DRY
65-86 06/01/1i9 5 u 5 u 5 u 5 u 5 u 5 u 5 U
65-86 07/20/89 Data nut yet received
66-86 05/11/87 1 l, U IIR IIR IIA NR NA ilK
66-86 OS/28/87 2 l, U IIR IIR NA NA NR IIA
66-86 07/17/87 3 DRY
66-86 10/19/87 l, DRY
66-86 03/31/81i 1 5 u 5 u ~ u 5 U 5 U 5 U 5 U
66-86 06/02/88 2 5 u 5 u 5 lJ 5 U 5 U 5 U 5 U
66-86 10/07/88 URY
66-86 12/23/1i8 ORY
66-86 06/02/89 OatiJ nut yet received
66-86 01/20/1i9 Data not yet received
69-86
04/29/87
IIR
IIR
4 U
IIR = Analyte not reported
J = Present belol.! detection limit
U = Analyzed but not detected
B = Present in laboratory blank
IIR
IIR
. = Holding time not met
II = Batch spike not in 80-120X range
NR
IIR
E = Estimated value
-------
"
Groundwater Volatile organic Results
For wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 IIILLSIDE
Lie II Date Chloro Bromo Vinyl Chloro Methylene Carbon
NLllber Sall~led Qtr. melhane melhane Chloride ethane Chloride Acetone Disulfide
uy/I ug/I ug/I ug/l ug/l ug/t ug/t
69-86 OS/26/87 2 . Nil tlR Nil NR NR NR NR
69-86 07/06/87 J NR NR Nil NR NR NR NR
69-86 10/07/87 " Nil NR Nil NR Nil NR NR
69-86 10/08/87 IN~UffICII:NI SAMPLE lOR VOlAlliE OIlGANI!; ANALYSIS
69-86 02/ 10/88 1 10 II IOU IOU 10 U S u 10 U S U
69-86 04/11/88 2 10 U 10 U IOu 10 U S U 10 U S U
69-86 07118/88 J IOu 10 U IOU 10 U . S U 10 U 5 U
69,86 10/20/88 " 10 U 10 U 10 U 10 U 5 U 10 U 5 U
69-86 01/12/89 1 10U R 1011 R 10 U 100 R S U 10 U 5 U
69,86 04/17/89 2 10 U 10 U lOU 10 U S U 10 U S U
69-86 05/26/89 IOU 10 u 10 U 10 U 5 U 10 U 5 U
69-86 08/11189 O"la not yel received
02.87 05/29/87 2 I NSliff IC IENI SAMPLE lUll VOl A IILE ORGANIC ANALYSIS
02-87 06/21,187 2 IOU IOU 10U IOU JS B 65 8 5U
02.87 07/09/87 J Nil NR Nil NR NR NR NR
02-87 10/07/87 " NR NR NR NR NR NR NR
02-87 10/08/87 I, INSUfF ICIENI SAHPl.E 1011 VOL A 11l E ORGANIC ANALYSIS
02-87 02/ 10/88 I IOU 10 U lOU 10 U S U 10 U S U
NR = Analyte not reported
J = Present below detect ion I imi I
U = Analyzed but not detected
B = Present in laboratory blank
* = Holding ti"~ not met
N = Batch spike noS in 80-120~ range
E = Estimated value
-------
Groundwater volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
I, I-oi - 1,1-0 i - lI..ms - I , 2 -
~ell Date ell! oro chiaro Oichloro
NUIlLer Salllpi ed Qtr. cthene ethane ethene
"9/1 "9/1 u9/1
- - ------
69-86 0')/26/87 2 " IJ NR NR
69-86 07/06/87 1 " U NR NR
69-86 10/07/87 " S IJ NR Nk
69-86 10/08/87 I NSlJff ICIENI SAMPLE fUR VOLA III E URGANIC ANALYSIS
Chloroforlll
"9/1
1,'2-0 i-
chiaro
ethane
2-Butanooe
uglt
ug/l
1, 1, 1-1 r i
chiaro
ethane
ug/l
" u
" u
S u
" u
" u
s u
I, U
I, u
S U
NR
NR
HR
s u
S U
S u
5 u
69-86 02/10/88 1 S IJ S IJ NR S U S u 10 U
69-86 01,/11/88 2 'j IJ S U NR S U S u 10 U
69-66 07/16/88 1 S IJ S U NR S U S U 10 U
69-66 10/20/68 " S U S U NR S U S U 10 U
69-86 01/12/89 1 S IJ S U NR S U S u 10U R
69-86 01,/17/89 2 S u ') U NR S U S U 10 U
69-66 0')/26/89 S U S U NR 5 U 5 u 10 U
69-66 06/11/89 Oat a not yet received
5 U
5 U
5 U
02-87 OS/29/87 2 I NSlJtf ICIENI SAMPLE fOR VOLA IIIE ORGANIC ANAlYS~S
02-67 06/21,/87 2 5u Su Su Su 5U 10U SU .
02-67 07/09/87 1 6 NR NR I, U I, U HR I, U
02-87 10/07/87 I, S II NR NR S U 5 U NR 5 U
02-87 10/08/87 " INSlJlrlCIENI SAMPI E I OR VOLA III E ORGANIC ANALYSIS
02-87 02/ 10/88 1 'j u 5 U NR 5 u S u 10 U 5 U
NR = Analyte not reported
J = Present below detection limIt
u = Analyzed but not detected
B = Present in laboratory blank
* = Holding time not met
H = Batch spike not in 80-120X range
E : Estimated value
-------
Groundwater Volatile organic Results
For wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 HILLSIDE
CarlJon 111'00110 1.2-0i - Cis-1.:5- Oibrorno
Uell Oilte Tetra Vinyl dichloro chiaro Dichiara Trichtoro chiaro
NLJlber Sampled etr. chloride Acetate methane propane propene ethene methane
ug/I ug/I ug/I ug/I ug/I ug/t ug/t
69-86 OS/26/87 2 l, U Nil Nil Nil Nil " U Nil
69-86 07/06/87 :5 l, U Nil Nil Nil Nil 4 U NR
69-86 10/07/87 l, 5 U Nil Nil Nil Nil 5 U Nil
69-86 10/08/87 IN~lIH ICIENI SAHPlE fOR \lOlAlllI: ORGANIC'ANAl~SIS
69-86 02/10/88 1 5 U 10 lJ 5 U 5 U 5 U 5 U 5 U
69-86 01,/11/88 2 5 U 10 lJ 5 U 5 U 5 u 5 u 5 U
69-86 07/18/88 :5 5 U 10 u 5 lJ 5 u 5 u 5 u 5 U
69-86 10/20/88 " 5 U 10 U 5 U 5 U 5 u 5 u 5 U
69-86 01/12/89 1 5 U 10 u 5 u 5 U 5 U 5 u 5 U
69-86 01,/17/~9 2 5 U 10u R 5 lJ 5 U 5 u 5 u 5 U
69-86 OS/26/89 5 U 10 lJ 5 U 5 U 5 U 5 u 5 U
69-86 08/11/89 Data not yet received
02-87 05/29/87 2 INSUfF ICIENI SAMPLE fOR \lOlA IIlE ORGANIC ANAl~SIS
02-87 06/24/87 2 5u IOU 5u 5u 5U 5U 5U
02-87 07/09/87 :5 l, u NR NR NR NR " U NR
02-87 10/07/87 l, 5 U NR NR Nil NR 5 U NR
02-87 10/08/87 I, I NSlJff ICIENI SAHPlE fOR \lOl AllIE ORGANIC ANALYSIS
02-87 02/10/88 1 5 U 10 u 5 U 5 U 5 U 5 U 5 u
NR = Analyte not reported
J = Present below detection lintit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding tiDlE: not met
N = Batch spike not in 80-120~ range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF TilE 001 HILLSIDE
" 1,2-1 r i 1 runs -1,1- 2-Chloro I,-Hethvl-
~ell Date chiaro Dichiara ethylvinyl 2-pent.
Nlilber Sampled Qtr. ethane 8enzene propene ether 8romoform none 2-Hexanone
uy/l ug/l ug/l ug/l uglt ug/t ug/t
69-86 05/26/87 2 I, U NR NR NR NR NR NR
69-86 07/06/87 3 I, U NR NR NR NR NR NR
69-86 10/07/87 I, 5 U NR NR NR NR NR NR
69-86 10/08187 I NSlJf fI C I EN 1 SAMPLE fOR VOlAIIlE ORGANIC ANAl¥SIS
69-86 02/10/88 1 5 U 5 U 5 U 10 U 5 U 10 U 10 U
69-86 01,111/88 2 5 U 5 U 5 U 10 U 5 U 10 u 10 U
69-86 07118/86 3 5 U 5 U 5 U 10 U 5 U 10 U 10 U
69-86 10/20/86 I, 5 U 5 U 5 U 10 U 5 U 10 U 10 U
69-86 01/ 12/89 1 5 U 5 U 5 U NR 5 U 10 U 10 U
69-86 01,117189 2 5 U 5 U 5 U NR 5 U 10 U 10 U
69-86 05/26/89 5 U 5 U 5 U NR 5 U 10 U 10 U
69-86 08/11/89 Data not yet received
02-87 05129/87 2 INSlJfflCIENI SAMPLE fOR VOlAIIlE ORGANIC ANAl¥SIS
02-87 06121,187 2 5U 5u 5U IOU 5U IOU IOU
02-67 07/09/87 3 I, U NR NR NR NR NR NR
02-87 10/07/87 I, 5 U NR NR NR NR NR NR
02-87 10/0818/ I, IIISlJ/ f ICIENI SAMPU lOW VOL A III E ORGANIC ANAl¥SIS
02-87 02110/88 5 u '> U 5 u 10 u 5 u 10 U 10 u
NR = Analyte not reported
J = Present below de tee t i on I imi t
U = Analyzed but not detected
8 = Present in laboratory blank
. = Holding t line not met
N = Batch spike not in 80-1204 range
E = Estimated vatue
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
I CI ril 1,1,2,2'
~ell Date chiaro It:trilchloro Chloro Ethyl lotal
NUliber Sampled Qtr. elhcne ethanc loluenc benzenc benzene Styrene Xylenes
II!)/I u9/1 U9/1 119/1 u9/1 U9/1 u!)/I
- ------ ------
69,86 OS/26/87 2 I, II NR NR NR NR NR NR
69-86 07/06/87 3 I, U NR NR NR NR NR NR
69-86 10/07/87 I, 5 U NR NR NR NR NR NR
69-66. 10/08/67 INSUff ICIENI SAMPLE fOR VOL A III E ORGANIC ANALYSIS
69-66 02/10/66 1 5 u 5 U 5 II 5 u 5 u 5 u 5 u
69-66 01,/11/86 2 5 u 5 u 5 u 5 u 5 u 5 U 5 .U
69-66 07/18/88 3 5 u 5 II 5 II 5 u 5 U 5 u 5 u
69-66 10/20/68 I, 5 u 5 u 5 u 5 u 5 u 5 U 5 U
69-86 01/12/89 1 5 u 5 II 5 u 5 u 5 u 5 u 5 U
69-66 01,/17/89 2 5 u 5 u 5 u 5 u 5 u 5 u 5 U
69-66 OS/26/89 5 u 5 U 5 u 5 U 5 u 5 u 5 U
69-66 08/11/89 Data not yct received
02-87 OS/29/87 2 INSUfflCIENI SAMPLE fOR VOLA I HE ORGANIC ANALYSIS
02-87 06/21,/87 2 5U 5u 5U 5U 5U 5U 5U
02-87 07/09/87 3 I, U NR NR NR NR NR NR
02-87 10/07/87 I, 5 U NR NR NR NR NR NR
02-87 10/08/87 I, INSUff ICIENI SAMPl E fOR VOlA IILE ORGANIC ANALYSIS
02.87 02/10/86 1 5 U 5 U 5 U 5 U 5 U 5 u 5 U
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
~dl Date Chiaro Brulllu Vinyl Chiaro Ml!thylene Carbon
NUBber Sall~)1 ed (Hr. methane methane Chloride ethane Chloride Acetone Disulfide
11,,/1 uy/l uy/I ug/I ug/I ug/l ug/l
--- ----
02-87 04/07/88 2 10 U 10 U IOU 10 U 23 10 U 5 U
02-87 07/ 13/88 3 10 U 10 U 10 U 10 U 5 u 10 u 5 U
02-87 10/20/88 I, INSUffiCIENt SAMPLE fOR VOlAIIlE ORGANIC ANALYSIS
02-87 11/11,/88 I, 10 U IOU 10 U 10 U I, J8 10 U 5 U
02-87 01/12/89 1 10U R IOU R 10 U 10U R 5 u 10 U 5 U
02-87 04/17/89 2 10 U IOU IOU 10 U 5 u 10 U 5 U
02-87 OS/26/89 INSUFFICIENt SAMPLE fOR VOl AIHE ORGANIC ANALYSIS
02-87 05/30/89 10 U 10 u IOU 10 U 17 8 2 J 5 u
02-87 07/25/89 Data nut yet received
t,7-87 11/30/87 I, 10 U 10 U 10 U 10 u 5 U 10 u 5 U
t,7-87 11/30/87 I, 10 U 10 U 10 U 10 U .88 5 J 5 U
t,7-87 02/15/B8 1 DRY
t,7-87 04/13/88 2 DRY
t,7-87 07/18/88 3 DRY
t,7-87 10/21/88 4 DRY
t,7-87 06/10/89 Data not yet received
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
I, I-D i - 1,1-0 i. I rans-I, 2- 1.2-Di- 1.1.1-'ri
\Je II Date chiaro chiaro Dichiara chiaro chloro
Nliube r SaliFied atr. ethene ethane elhene Chloroform ethane 2-Butanone ethane
lJ9/1 U9/1 U9/1 u9/1 u9/1 u9/& U9/1
02-87 01,/07/88 2 5 u 5 U lOR 5 U 5 U 10 U 5 u
02-87 07/13/88 3 5 u 5 U lOR 5 U 5 u 10 u 5 u
02-87 10/20/88 .1, INSlJif ICIEtH SAHPlE fOR VOl A III E ORGANIC ANALYSIS
02-87 11/11,/88 I, 5 u 5 U NR 2 JB 5 U 10 u 5 u
02-87 01/12/89 1 5 u 5 U lOR 5 U 5 U IOU R 5 U
02-87 01,/17/89 2 5 U 5 U NR 5 U S U 10 U 5 U
02-87 OS/26/89 INSlJff ICIENI SAHPI E fOR VOl A III E ORGANIC ANALYSIS
02-87 05/30/89 5 U 5 U lOR 5 U 5 u 10 U 5 U
02-87 07/25/89 Data not yet received
H-87 11/30/87 I, 5 u 5 U lOR 5 U S u 10 U 5 U
H-87 11/30/87 I, 5 u 5 lJ 5 u 1 J 5 u 10 U 5 U
1,7-87 02/15/88 1 Din
H-87 01,/13/88 2 DRY
H-87 07/18/88 3 DRY
H.87 10/21/88 I, DRY
H-87 06/10/89 Data nol yel reccived
lOR = Analyle not reported
J = Present below detection limit
U = Analyzcd but not detected
B = Prescnt in laboratory blilnk
. = Holding time not met
N = Batch spike not in 80-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
CiJroon 81"1:'110 1.2-0i - Cis-1,5- OibrolllO
~ell Oate Tetra Vinyl dic.hloro chiaro Dichiara Trichloro chiaro
NUliber Sanpl ed Qtr. chloride Acetate methane propane propene ethene methane
ug/I ug/I ug/I ug/I ug/I uglt ug/I
-
02-87 04/07/88 2 5 u 10 U 5 U 5 u 5 u 5 U 5 U
02-87 07/B/88 5 5 u 10 U 5 U 5 U 5 U 5 U 5 U
02-87 10/20/88 I, INSlJfilCIENI SAHPLE fOR VOIAIILE ORGANIC ANALYSIS
02-87 11/14/88 I, 5 u 10 U 5 U 5 U 5 u 5 u 5 U
02-87 01/121B9 1 5 u IOU 5 U 5 u 5 U Z J 5 U
02-87 04/17/89 2 5 U lOll R 5 u 5 u 5 u 5 u 5 U
02-87 OS/26/B9 I NSlJff ICIENT SAH!'I E fOR VOLA III E ORGANIC ANALYSIS
02-87 05/30/89 5 U IOU 5 u 5 u 5 u 5 U 5 U
02-87 07/25/89 Data not yet received
i,7-87 11/30/87 I, 5 u 10 U 5 U 5 u 5 u 5 U 5 U
i,7-87 11/30/87 I, 5 u 10 U 5 u 5 u 5 U 5 u 5 U
i,7-87 021 15/1J1J I DRY
i,7-87 04/ B/88 2 DRY
i,7-87 07/18/88 5 DRY
i,7-87 10/21/88 " DRY
I,I-B7 06/1U/1J'J Dill a IILlI yel I"ClCIVed
NR = Analyte nLlI reported
J = Present below detection limit
U = AIMlyzed bllt not detected
8 = Present in laboratory blank
. = Holding time not met
N = 8atch spike not in 80-1204 range
E = Esti~ted value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
" 1,2 -I r i 1 r ans - 1 , 3 - 2-Chloro I,-Methyl-
~ell Date chiaro Dichiara ethylvinyl 2-penta
Nuuber Sampled Utr. ethane Benzene propene ether Bromoform none 2-Hellanone
uy!l ug/I ug!l ug!l ug/I ug/I ugJl
02-67 01,/07/66 2 5 U 5 U 5 U 10 U 5 U 10 U 10 U
02-67 07/13/66 :} 5 U 5 U 5 U 10 U 5 U 10 U 10 U
02-67 10/20/68 I, I NSlJff ICIENI SAMPLE fOil VOlAlilE ORGANIC ANALYSIS
02-87 11/11,/66 I, 5 U 5 U 5 U 10 U 5 U 10 U 10 U
02-67 01/12/69 1 5 U 5 U 5 U Nil 5 U 10 U 10 U
02-67 01,/17/69 2 5 U 5 U 5 U Nil 5 U 10 U 10 U
02-67 OS/26/69 INSUfflCIENI SAMPLE fOil VOIAJ IlE ORGANIC ANALYSIS
02-67 05/30/69 5 U 5 U 5 U Nil 5 U 10 U 10 U
02-67 07/25/69 Data not yet receiveJ
i,7-67 11/30/67 I, 5 U 5 U 5 U Nil 5 U 10 U 10 U
1,7-67 11/30/67 I, 5 u 5 U 5 U 10 U . 5 U 10 U 10 U
1,7-67 02/15/88 1 ORY
i,7-67 01,/13/68 2 ORY
i,7-67 07/18/88 :} ORY
i,7-87 10/21/68 I, ORY
i,7-67 06/10/89 Data nut yet received
NR = Analyte not reported
J = Present below detect ion I illli t
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 60-120X range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
Tct,-a I, 1,2,2 -
~ell Date chiaro letrachloro Chiaro Ethyl lot81
Number Sampled Qtr. ethene ethane Toluene benzene benzene Styrene Xylenes
u!J/1 u!J/I ug/l ug/l ug/l ug/l ug/l
02-87 04/01/88 2 5 u 5 u 5 u 5 u S u 5 u 5 U
02-87 07/H/88 3 5 U 5 u 5 u 5 U 5 u 5 u 5 U
02-87 10/20/88 I. I NSlJff ICIENT SAHPlE lOR VOL A III E ORGANIC ANALYSIS
02-87 11/14/86 I. 5 u 5 u J JLJ 5 U S u 5 U 5 U
02-87 01/12/89 1 35 J 5 u 5 u 5 u 5 u 5 U 5 U
02-87 04/11/89 2 5 u 5 u 5 u 5 u 5 U 5 u 5 U
02-87 OS/26/89 I NSLJff ICIENI SAHPLE lOR VOIAIIlE ORGANIC ANALYSIS
02-87 05/30/89 5 u 5 u 5 u 5 U 5 U 5 u 5 U
02-87 07/25/89 Data not yet received
41-87 11/30/87 I. 5 u 5 u 5 u 5 U 5 u 5 u 5 U
41-87 11130/67 I. 5 u 5 u 5 u 5 U - S u 5 u 5 U
47-87 02/15/lIt! 1 DRY
41-87 04/H/88 2 DRY
47-87 07/18/86 3 DRY-
41-87 10/21/88 I, DRY
41-87 06/10/89 Data not yet received
NR = AnalYle not reported
J = Present below detection limit
U = Analyzed but not detecled
8 = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-120X range
E = Estimated value
R = Data rejected during validation.
-------
Groundwater Vo atile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 IIILLSIDE
Yell Date Chiaro Bromo Vinyl
NUlber Sampl ed Qtr. methilne methanc Chlorid.:
lJ9/1 lJy/1 uy/I
1,8-87 11/18/87 I, 10 U 10 U 10 U
1,8-87 11/18/87 I, IOU 10 U 10 U
1,11-87 02/15/88 1 10 U IOU 10 U
1,8-87 01,/13/88 2 IOU 10 U IOU
1,8-87 07/18/88 3 ORY
1,8-87 10/21/88 I, DRY
1,8-87 06/09/69 Ddta not I'd r.:ceivcd
1,11-87 07/25/89 Data not yet receivcd
Chiaro Mcthylene Carbon
ethane Chloride Acetooe Di suit ide
ug/I lJg/1 ug/I ug/I
10 U 5 U 10 U 5 U
10 U 2 JB " JB 5 U
IOU 5 U 10 U 5 U
10 U 5 U 12 5 U
55-87 11/30/87 I, IOU 10 U 10 U 10 U 5 U 10 U 5 U
55-87 11/30/87 I, 10 U 10 U 10 U 10 U 8 B 10 U 5 U
55-87 02/15/68 1 DRY
55-87 01,/11/88 2 ORY
55-87 07/13/86 3 ORY
55-87 10/21/88 I, DRY
55-87 06/02/89 10 U IOU 10 U IOU 5 U 19 1 J
55-87 07/10/89 Oalil nul Yl:t rCl-civcd
NR = Analyte not reported
.J = Present below detection limit
U = Analyzed but not detected
B = P,'cscnt in Iilboratory l.>IiJnk
* ::; Holding t iOle not Diet
N = Batch spike not in 80-1207. range
E = Estimated value
-------
Groundwater Volatile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
1,1-0 i - 1,1-0 i- Irans-1,2- 1, 2-0i -
\.lei I Date chiaro chiaro Dichiara chiaro
Nllube r SalltJl ed Qtr. ethenc ethane elhene Chloroform ethane
U!J II ugJl ug/l ugJl ug/l
1.8-87 11/18/87 I. 5 U 5 U Nil 5 U 5 U
1.8-87 11/18/87 I. 5 U 5 u 5 U 5 u 5 u
1.8-87 02115188 1 5 U 5 U /lR 5 U 5 U
1.8-87 01./13/88 2 5 U 5 U Nil 5 U 5 U
1.8-87 07/18/88 ] DRY
1.8-87 10/21/88 I. OilY
1.8-87 06/09/89 Dilla not yet received
1.8-87 07/25/89 Dala not yet received
2-Sutanone
ug/l
1,1,1-Jri
chiaro
ethane
ug/l
10 U
10 U
5 U
5 U
10 U
10 U
5 U
5 U
55-87 11/30/87 I. 5 U 5 U Nil 5 U 5 U 10 u 5 U
55-87 11/30/87 I. 5 U 5 U 5 U 5 U 5 u 10 u 5 U
55-87 02/15/88 1 DRY
55-87 01./11/88 2 DRY
55-87 07/13/88 3 DRY
55-87 10/21/88 I. DRY
55-87 06/02/89 5 LJ 5 LJ /III 5 U 5 U 10 U 5 U
55-87 07110189 11011" nul yel received
I
Nil = Anal yte not reported
J = Present below dctect ion I illli t
U = Analyzed but not detecled
B = Present in laboratory bl.Jnk
. = Holding time not met
N = Batch spike not in 80-1204 range
E = Estimated value
R = Data rejected during validation.
-------
.(
Groundwater Vo
tile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 HILLSIDE
Caloon BroUio 1,2-0 i - Cis-I, 3- Oibromo
Uell Date letra Vinyl dichloro chloro Oichloro frichtoro chloro
NUliber Sampled Qtr. chloride Acetate methane propane propene ethene II1ethane
uCi/1 ug/I ugJl ug/I ug/I ugJl uglt
1,8-87 11/18/87 " 5 U 10 U 5 lJ 5 U 5 U S u S U
1,8-87 11/18/87 I, 5 U 10 U 5 U 5 U 5 U S u S U
1,8-87 02/15/88 1 5 U 10 U 5 lJ 5 U 5 U S U 5 U
1,8-87 01,/ n/88 2 5 U 10 U 5 U 5 u 5 U S U 5 U
1,8-87 07118/88 3 DRY
1,8-87 10/21/88 I, DRY
1,8-87 06/09/89 Data not yet received
1,8-87 07125/89 Duta not yet received
55-87 11/30/87 " 5 U 10 lJ 5 u S u S U S u S U
55-87 11/30/87 " 5 U 10 U 5 U 5 U 5 u S U 5 U
55-87 02/15/88 1 DRY
55-87 01,/11/88 2 DRY
55-87 07/n/88 3 DRY
55-87 10/21/88 " DRY
55-87 06/02/89 5 lJ IOU 5 lJ S U 5 U 5 U 5 U
55-87 07110/89 Data not yet received
4
NR = Analyte not rcported
J = Present below detect Ion I imi t
U = Analyzed out not detected
8 = Present ill I"boratory blank
* = Holding time not met
N = Batch spike not in 80-1204 range
E = Estimated value
-------
Groundwater Volatile Organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 IIILLSIDE
ug/l
Irans-I,~- 2-(hloro I,-Hethvl-
Dichiara ethyl vinyl 2-pent8
propene ether 8romoform none 2-Hexanone
ug/l ug!l uy!l uy/l ug/l
5 u 5 U NR 5 U 10 u 10 U
5 u 5 u 10 u 5 U 10 U 10 U
5 u 5 u 10 u 5 U 10 U 10 U
5 U 5 u 10 U 5 U 10 U 10 U
Yell
NUILer
Date
Sallpl ed CIt r .
I, 1,2 - I r i
chiaro
ethane
uy/l
Benzene
---
1,8-87 11/18/87 I,
1,8-87 11/18/87 I,
1,8-87 02/ 15/88 1
1,8-87 01,/13/88 2
1,8-87 07/18/88 ~
1,8-87 10/21/88 I,
1,8-87 06/09/89
1,8-87 07/25/89
5 u
5 u
5 u
5 U
DRY
ORY
Data not yet received
Data not vet received
55-87 11/~0/87 I, 5 u 5 u 5 U NR 5 U 10 U 10 U
55-87 11/30/87 I, 5 U 5 u 5 u 10 U 5 U 10 U 10 U
55-87 02/15/88 1 DRY
55-87 04/11/88 2 DRY
55-87 07/13/88 ~ DRY
55-87 10/21/88 I, DRY
55-87 06/02/89 ~ U 5 u 5 U NR 5 U 10 U 10 U
55-87 07/10/89 Data not yet received
NR = Analyte not reporte'"
J = Present tJelow detect lOll 111111 t
U = Analyzed but not detected
B = Presellt In laboratory blill~
. = Holding time not met
N = 8atch spike not _in 80-120X range
E = Estimated value
R = Data rejected during validation.
-------
..
Groundwater Vo
ile organic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
letriJ I, 1,2,2-
~el I Date chloro letrachloro Chi oro Ethyl
NUliber San,)1 ed Qtr- ethcne ethane 10luene benzene benzene
uy/l uy/l ug/l ug/l ug/l
48-87 11118/87 I, 5 U 5 U 5 u 5 u 5 u
1,8-87 11118/87 I, 5 u 5 u 5 u 5 u 5 U
48-87 02115/88 1 5 U 5 u 5 u 5 u 5 u
48-87 04/13/88 2 5 U 5 U 5 u 5 u 5 U
1,8-87 07118/88 1 DRY
48-87 10/21/88 I, DRY
1,8-87 06/09/89 Data not yet received
1,8-87 07/25/89 Data not yet received
Styrene
ug/l
10tal
)(ylenes
ug/l
5 u
5 u
5 u
5 u
5 u
5 u
5 u
5 u
55-87 11/30/87 I, 5 u 5 u 5 u 5 u 5 u 5 u 5 U
55-87 11/30/87 I, 5 U 5 U 5 u 5 u 5 u 5 u 5 U
55-87 02115188 1 DRY
55-87 01,/11/88 2 DRY
55-87 07/13188 :3 DRY
55-87 10/21/88 I, DRY
55-87 Ob/02/89 5 u 5 u 5 u 5 u 5 u 5 U 5 u
55-87 07/10/89 Data not yet rcceived
NR ; Analyte not reported
J ; Present below detect i on I imi t
U ; Analyzcd but not detected
B ; Present in laboratory blank.
. ; Holding tin~ not met
N ; Batch spike not in 80-120X range
E ; Estimated value
R : Data rejected during validation.
,
-------
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
DISSOL VED METAL RESULTS
...
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN. COLORADO
.1
I
-------
Groundwater
solved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF 'rilE 881 HILLSIDE
~ell Date Aluninlln Ant imony Arsenic BII r i lf1I
NUlber SIIIIpl ed Qtr. (AI), diss. (Sb), diss. (As), diss. (8a), di u.
1119/1 nl9/1 1119/1 1119/1
---- -------- ------
610,86 010/29/87 1 0.0290 U 0.06 U 0.0100 U 0.1111
6t.'86 OS/28/87 2 INSUffiCIENT SAHPlE fOR HETAlS ANALYSIS
61..86 07/16/87 J O.OIoJO 0.02 U 0.005 U 0.0774
610,86 10/12/87 4 DRY
610-86 02/17/88 1 0.0290 U 0.02 U '0.005 U 0.01087
64,86 010/11/88 2 0.0115 0.01100 U 0.005 U 0.0411
6t.-86 07/1]/88 J DRY
64-86 10/21/88 4 DRY
8eryll iw
(Be), diu.
1119/ I
0.005 U
0.005 U
o . 005 U
0.0010 U
..
ClldDlUI Calclw
(Cd), dill. (C8), diu.
1liii/I mg/I
0.0050 U 52.1962
O.OOOJ J 76.4896
0.001 U 57.516t.
0.0050 U 50.176J
65-86 05/1]/87 1 0.0290 U 0.06 U 0.0100 U 0.0922 0.005 U 0.0050 U 85.8800
65,86 OS/28/87 2 0.0290 U 0.06 U 0.01 U 0.1085 0.005 U 0.005 U 92.4841
65,86 07/16/87 J INSUffiCIENT SAHPlE fOR HEIAlS ANALYSIS
65,86 09/09/87 J 0.21010 0.02 U 0.005 U 0.2199 0.005 U 0.001 99.8950
65,86 10/19/87 4 DRY
65,86 02/29/88 1 0.0501 0.02 U 0.005 U 0.1020 0.005 U 0.001 U 80.8845
65,86 010/18/88 2 0.01]2 0.01100 U 0.005 U 0.0470 0.0010 U 0.0050 U 62.1582
65,86 07/19/86 1 DRY
65,86 10/21/86 4 DRY
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present in laboratory blank
* = Holding time not met
N = 8atch spike not in 80. 120X range
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
UeU Date Ces h.o Chromiuo Cabal t Copper Iron Lead
NUIVer Sallpled Qtr. (Cs). diss. (Cr). diss. (Co). diss. (Cu). diss. (Fe). diss. (Pb), diu.
0'9/1 019/1 1119/1 my/I 1119/1 1119/1
---- .-------.- ---- - --
64-86 04/29/87 1 0.2 U 0.0100 U 0.0220 U 0.006J U 0.0069 U 0.0050 U
64-86 OS/28/87 2 I NSlJff ICIENJ SAMPLE fOR MEJALS ANALYSIS
64-86 01116/87 J 0.02 U 0.0100 U 0.0220 U 0.OJ41 0.0069 U 0.005 U
64,86 10/12/87 4 DRY
64-86 02/17/88 1 0.02 U 0.0100 U 0.0220 U 0.0097 0.0069 U 0.005 U
64-86 04/11/88 2 0.02 U 0.0100 U 0.0220 U 0.0078 0.02710 0.005 U
64-86 07/ U/88 J DRY
64-86 10/21/88 10 DRY
Li th iun
(LO. diss.
1119/1
NR
NR
0.05 J
0.1 U
65-86 05/ U/87 1 0.2 U 0.0100 U 0.0220 U 0.006J U 0.01510 0.0050 U NR
65,86 OS/28/87 2 0.2 U 0.0100 U 0.0220 U 0.006J U 0 . 0086 0.0210 NR
65-86 07/16/87 J INSUfflCIENJ SAMPLE fOR MEIALS ANALYSIS
65,86 09/09/87 ] 0.02 U 0.0100 U 0.0220 U 0.0202 0.10065 0.001 J NR
65-86 10/19/87 4 DRY
65-86 02/29/68 1 0.02 U 0.0100 U 0.0220 U 0.006J U 0.0387 0.005 U 0.1 U
65-86 04/18/68 2 0.02 U 0.0100 U 0.0220 U 0.0102 0.0491 0.005 U 0.1 U
65-86 07/19/68 3 DRY
65-86 10/21/68 I, DRY
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detectt.>d
8 = P,-esent in hboratory blank
* = Holding time not met
N = 8atch spike not in 80. 120X range
E = Estimated value
-------
Groundwater
ssolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF 'J'HE 881 HILLSIDE
\leU Oate Magnesiw Manganese Mercury Mol ~IUI lIickel
NlI1ber S BlIp l ed Qtr. (M,,), diu. (Hn), diu. (H,,), diu. (Mo), dill. (III), diu.
1119 / l 119/ l 1Q9/ l lIIiJ/l 1119 / l
M-86 01,/29/87 1 16.1115 0.2782 0.0002 U 0.0220 U 0.4380
64-86 OS/28/87 2 INSUfflCIENI SAMPLE fOR MEIALS ANALYSIS
64-86 07/16/87 3 23.3312 0.1053 0.006 0.0220 U 0.0370 U
61,-86 10/12/87 4 DRY
61,.86 02/17/88 1 19.901,4 0.0587 0.0002 U 0.0234 0.01,92
64-86 01,/11/88 2 16.6025 0.03JI 0.0002 U 0.0211 0.0370 U
64-86 07/13/88 3 DRY
64-86 10/21/88 4 DRY
Pot8a81U1 Selenhn
U: ), dl... CSa), diu.
1IIiJ/I l1li/ t
5.0 U 0.005 U
2.4 0.002 J
1.6 0.004 J
1.3 0.009
65-86 05/13/87 1 20.9975 0.011,5 0.0002 U 0.0220 U 0.0370 U 5.0 U 0.005 U
65-86 OS/28/87 2 20.0700 0.0092 0.0002 U 0.0220 U 0.0370 U 5.0 U 0.005 U
65.86 07/16/87 3 INSUfflCIEll1 SAMPLE fOR METALS ANALYSIS
65-86 09/09/87 3 26.1863 0.1589 0.0002 U 0.0220 U 0.0531, 2.1 0.005 U
65.86 10/19/87 4 DRY
65.86 02/29/88 1 21.9367 0.0060 0.0002 U 0.0220 U 0.0370 U 1.3 0.005 U
65.86 01,/18/88 2 16.6175 0.0051 U 0.0002 U 0.0220 U 0.0370 U 1.0 0.005 U
65-86 07/19/88 3 DRY
65.86 10/21/88 4 DRY
NK ; Analyte not reported
J ; Present below detection limit
U ;: Anal yzed but not detec ted
B ; Present in laboratory blank
. ; Holding t ilile not llet
II ;: Batch apike not in 80. 120¥ range
L ' .,,") ..'~-
-------
~~ ~..t-< ~ .':\ .",'. ~ -'~ '
- '. .....
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIEWf OF ,!'BE 881 HILLSIDE
lJeU Date Silver SodiuD Iin Stroot iUli Ihall iUII VanadlUl Zinc
NUlber SaqJl ed Qtr. (Ag), diss. (Na), diss. (Sn), diss. (Sr), diu. (11), diu. (V), dill. Un), di ill.
1119/1 RI9II 111911 119/1 1119/1 1Ig/1 1119/ t
-----
61,-86 01,./29/81 1 0_0016 U 88.t,.163 Nil 0_4237 0.0100 U 0.0240 U 0.02
61,-86 05/28/81 2 INSUfflCIENI SAHPlE fOil HEIAlS ANALYSIS
61,.-86 01116/81 3 0.0016 U 161.2014 Nil 0.6982 0.01 U 0.0368 0.0218
61,-86 10112/87 4 OilY
61,.-86 02/17/88 1 0.0076 U 105.6913 Nil 0.5420 0.01 U 0.0240 U 0.0200 U
61,-86 010/11/88 2 0.0076 U 95.3058 Nil 0.4391 0.01 U 0.0360 U 0.0200 U
61,.-86 01113/88 3 DRY
610-86 10/21/88 4 OilY
65-86 05/13/81 1 0.0076 U 11,..5395 Nil 0.5659 0.0100 U 0.0240 U 0.02 U
65-86 05/28/87 2 0.0076 U 12.2861,. Nil 0.5125 0.01 U 0.0240 U 0.0211
65-86 01/16/81 3 INSUfflCIENI SAHPlE fOR HEIAlS ANALYSIS
65-86 09/09/81 3 0.0076 U 15.51,53 Nil O. 1864 0:01 U 0.0240 U 0.0990
65-86 10/19/81 4 OilY
65-86 02/29/88 1 0.0076 U 67.5561,. Nil 0.6006 0.01 U 0.0240 U 0.0313
65,86 01,./18/88 2 0.0076 U 55.3275 Nil 0.4262 0.01 U 0.0360 U 0.1039
65-86 01119/88 3 DRY
65-86 10/21/88 4 DRY
Nil = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
S = Present in laboratory blwlk
* = HOlding time not met
N = Satch spike not in 80.120X range
E . EIItlllBted value
-------
Groundwater
solv~d Metals Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIEN'r OF 'rilE 881 IIILLSIDE
IJe Il Date AI tilli nu" Ant imony Arsenic Bar illn Beryl i iUQ Cadniun Caiciun
NUILer Saupled Qtr. (AI). diss. (Sb), diss. (As), diss. (Ba), diss. (Be), diu. (Cd), diu. (Ca), diss.
"'9/ I ";g/ I 1119/1 ";g/ I mg/i mg/i mg/i
--- -----'- .---. - - ._. -- ---- ---
66-86 05/11/87 1 0.0411 0.06 U 0.0100 U 0.0726 0.005 U 0.0050 U 33.8505
66-86 OS/28/87 2 0.0290 U 0.06 U 0.01 U 0.1065 0.005 U 0.005 U 49.7015
66-86 07/17/87 3 DRY
66-86 10/19/87 4 DRY
66-86 03/31/88 1 0.0305 0.0340 U 0.005 u 0.01,73 0.0010 U 0.0050 U 29.8451
66.86 06/02/88 2 0.05H 0.031,0 U 0.005 U 0.0792 0.0010 U 0.0050 U 24.1847
66-86 10/07/88 DRY
66-86 12/23/88 DRY
69-86 01,/29/87 1 0.0290 U 0.06 U 0.0100 U 0.1023 0.005 U 0.0050 U 148.0271
69.86 OS/26/87 2 0.0290 U 0.06 U 0.01 U 0.1056 0.005 U 0.005 U 154.8550
69-86 07/06/87 3 0 "')]5 9 0.02 U 0.005 U 0.1215 0.005 U 0.001 U 138.0943
69.86 10/07/87 4 0.0700 0.02 U 0.005 U 0.1132 0.005 U 0.0005 J 113.3098
69.86 10/08/87 INSuffiCIENT SAHPlE fOR HEIAlS ANALYSIS
69.86 02/10/88 1 0.1216 0.031,0 U 0.002 J 0.1318 0.001 J 0.0016 147.3161
69.86 04/11/88 2 0.0290 U 0.031,0 U 0.005 U 0.1074 0.0010 U 0.0050 U 134 .6656
69.86 07/18/88 3 0.0371 0.0618 0.005 U 0.1063 0.0018 0.0050 U 136.7702
69-86 10120/88 4 0.0535 0.0602 0.005 U 0.1307 0.0010 U 0.0050 U 137.9526
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blanK
. = Holding time not met
N = Batch spike not in 80.120X range
E = Estimated vaiue
---. #, .., I
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
\leU Date Cesiun ChromiuD Coba It Copper Iron lead li th iun
H unbe r Sallpl ed Qtr. (Cs). diss. (Cr). diss. (Co). diss. (Cu), diss. (Fe), diss. (Pb), diu. (lO, diu.
"'9/1 019/1 01911 019/1 019/1 cog" 1119/1
----- .-- ---._-- -.--.
66,86 05/11/87 1 0.2 U 0.0100 U 0.0220 U 0.0063 U 0.0193 0.0050 U NR
66-86 05/28/87 2 0.2 U 0.0100 U 0.0220 U 0.0063 U 0.0125 0.018 HR
66-86 07/17/87 3 DRY
66-86 10/19/87 l, DRY
66,86 03/31/88 1 0.020 U 0.0100 U 0.0220 U 0.0072 0.0336 0.005 U 0.1 U
66-86 06/02188 2 0.02 U 0.0100 U 0.0220 U 0.0063 U 0.1015 0.005 U NR
66-86 10/07/88 DRY
66-86 12123188 DRY
69.86 04/29/87 1 0.2 U 0.0100 U 0.0220 U 0.0063 U 0.0069 U 0.0050 U HR
69-86 05/26/87 2 0.2 U 0.0100 U 0.0220 U 0.0063 U 0.0069 U 0.008 HR
69-86 07/06/87 3 0.02 U 0.0100 U 0.0220 U 0.0103 0.0128 0.005 U HR
69.86 10/07/87 l, 0.02 U 0.0234 0.0220 U 0.0133 0.0809 0.005 U 0.04 J
69,86 10/08/87 INSUfFlCIENJ SAHPLE FOR HEIALS ANALYSIS
69-86 02/10/88 1 0.02 U 0.0110 0.0220 U 0.0063 U 0.0615 0.005 U 0.1 U
69.86 01,/11/88 2 0.02 U 0.0100 U 0.0220 U 0.0063 U 0.0069 U 0.005 U 0.1 U
69,86 07/18/88 3 0.020 U 0.0100 U 0.0220 U 0.0063 U 0.0300 0.005 U HR
69-86 10/20/88 4 0.02 U 0.0100 U 0.0220 U 0.021,8 0.0483 0.005 U HR
HR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N . Batch spike not in 80-120~ range
-------
;
Groundwater
Issolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIEN'1' OF '1'HE 881 HILLSIDE
\Jell Date Hagnesiun Hanganese Mercury Molytxlenun Nickel Potluila Seleniun
N~lber SaJrpl ed Qtr. (HII), diss. (Hn), diss. (Hy), diss. (Mo), diss. (Ni), diss. (K ), diu. (Se), diu.
1119/1 1fI9/1 II1g /1 1119/1 1fI9/1 1119/1 my/I
--- - -- ---- - ---.- -- _.~-- ---
66,86 05/11/81 1 1.6188 0.1211 0.0002 U 0.0220 U 0.0983 5.0 U 0.005 U
66,86 OS/28/81 2 9.5561 0.1ie14 0.0002 U 0.0220 U 0.0310 U 5.0 U 0.005 U
66,86 01/11/81 3 DRY
66,86 10/19/81 4 DRY
66,86 03/31/88 1 6.1021, 0.0161 0.0002 U 0.0220 U 0.01,15 1.0 0.005 U
66,86 06/02/88 2 5.1,611 0.0092 0.0002 U 0.0220 U 0.0310 U 1.7 0.005 U
66,86 10/01/88 DRY
66,86 12/23/88 DRY
69,86 01,/29/81 1 1,1.1264 0.0211, 0.0002 U 0.0220 U 0.0310 U 5.0 U 0.24
69,86 OS/26/81 2 39.8560 0.0051 U 0.0002 U 0.0220 U 0.0310 U 5.0 U 0.20
69,86 01106/81 3 34.4513 0.0051 U 0.0002 U 0.0220 U 0.0310 U 0.8 0.02
69,86 10/01/81 4 30.8814 0.0222 0.0005 0.0220 U 0.0310 U 1.1 0.1
69,86 10/08/81 INSUH ICIENT SAMPLE fOR HETAlS ANALYSIS
69,86 02/10/88 1 1,1,.1781 0.0051 U 0.0002 U 0.0220 U 0.0310 U 0.7 0.082
69,86 04/11/88 2 41. 2801 0.0051 U 0.0002 U 0.0220 U 0.0394 0.8 0.17
69.86 07/18/88 3 34.5960 0.0078 0.0002* U 0.0220 U 0.0310 U 0.8 0.180
69.86 10/20/88 I, 36.8031 0.0071, 0.0002 U 0.0220 U 0.0310 U 2.0 0.077
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holdinll time not met
N = Batch spike not in 80. 120X range
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
Uell Date Si Iver Sodiun 'in Stront iun 'hall iUII Vanadh.ll Zinc
HUiber Saupled Qtr. (Ag), diss. (Ha), diss. (Sn), diss. (Sr), diss. (fl), diss. (V). diu. Un), diu.
11>9/1 1119/1 n~/I u~/I 1119/1 1119/1 1119/1
------ --.- ------ --.- -- --- ----
66-86 05/11/87 1 0.0076 U 23.3693 NR 0.2071, 0.0100 U 0.021,0 U 0.02 U
66-86 OS/28/87 2 0.0076 U 28.6255 NR 0.271,8 0.01 U 0.021,0 U 0.0200 U
66-86 07/17/87 3 DRY
66.86 10/19/87 I, DRY
66-86 03/31/88 1 0.0076 U 29.1,101, NR 0.1921 0.010 U 0.0360 U 0.01,66
66-86 06/02/88 2 0.0076 U 21.1230 NR 0.11,50 0.01 U 0.0360 U 0.0281
66.86 10/07/88 DRY
66.86 12/23/88 DRY
69.86 01,/29/87 1 0.0076 U 11,2.8058 NR 1.11,52 0.01 U 0.021,0 U 0.02 U
69-86 OS/26/87 2 0.0076 U 131, .1,011, NR 1.011,2 0.01 U 0.021,0 U 0.0209
69-86 07/06/81 3 0.0076 U 139.0061 NR 1.0l,93 0.01 U 0.021,0 U 0.0200 U
69.86 10/07/87 4 0.0076 U 129.8l,82 NR 0.8966 Q.OI U 0.0240 U 0.01,25
69.86 10/08/87 INSUffICIEH' SAMPLE fOR ME'AlS ANALYSIS
69.86 02/10/88 1 0.0076 U 131,.3162 NR 1. 1063 0.01 U 0.0360 U 0.0238
69.86 01,/11/88 2 0.0076 U 121. 7071, HR 1. 0063 0.01 U 0.0360 U 0.0381
69-86 07/18/88 3 0.0076 U 133.1,556 HR 1. 0698 0.010 U 0.0360 U 0.0751
69-86 10/20/88 I, 0.0076N U 11, 1.3305 NR 1.1370 0.01 U 0.0360 U 0.0614
HR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected.
B = Present in laboratory blank
. = Holding time not met
H = Batch spike not in 80.1201 range
-------
Groundwater
ssolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF 'l'UE BBl HILLSIDE
~eU Date Aluninun Ant imony Arsenic 8ariua 8erylliua
NUlber SWlpl ed Qtr. (AI), diss. (Sb), dis:i. (As), diss. (8a), dilili. (Be), dilis.
mg/I mg/I Ing/ I 1119/1 Ing/ I
02-87 OS/29/87 2 NA 0_06 U 0.01 U NA Nil
02-87 06/24/87 2 INSUffiCIENT SAI4PLE fOA METALS ANALYSIS
02-87 07/09/87 J 0.0290 U 0.02 U 0.005 U 0.0622 0.005 U
02-87 10/07/87 4 0.2600 0.02 U 0.005 U 0.1160 0.005 U
02-87 10/08/87 4 INSUffiCIENT SAI4PLE fOA MEIALS ANALYSIS
02-87 02/ 10/88 1 0.08'1 0.OJ40 U 0.005 U 0.095J 0.005 U
02-87 04/07/88 2 O.OJU 0.OJ40 U 0.005 U 0.0778 0.0010 U
02-87 01/U/88 J 0.0290 U 0.056J 0.005 U 0.U15 0.0017
02-87 10/20/88 4 0.0157 0.OJ92 0.005 U 0.1501 0.0010 U
02-81 11/1"88 4 INSUffiCIENT SAI4PLE fOA MEIALS ANALYSIS
1,1-81
41-81
11/10/81 4
11/10/81 4
INSUffiCIENT SAI4PLE fOR HETALS ANALYSIS
INSUffiCIENT SAMPLE fOR METALS ANALYSIS
1,1-87
'1-81
41-81
41-81
02/15/88 1
04/U/88 2
01/18/88 3
10/21/88 4
DAY
DAY
DRY
OilY
48-81
11/18/81 4
INSUFFICIENT SAI4PLE FOR HETALS ANALYSIS
Nil = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present in laboratory blank
. = Holding time not met
N = 8atch lipike not in 80-120¥ range
C.
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF 'I'HE BBl HILLSIDE
lJe Il Date Cesiun Chromiun Cobal t Copper Iron lead LI thlun
Nll1ber San4J1 ed Qtr. (Cs), diss. (Cn, diss. (Co), diss. (Cu), diu. (Fe), diss. (Pb), dill. (lO, dlss.
n'9/1 mg/I mg/I mg/t mg/t mg" mg/t
- - -- ------ ---
02.87 OS/29/87 2 0.2 U NR IIR NR NR 0.005 U 0.02
02.87 06124/87 2 INSUfflCIENr SAHPLE fOR "ErALS ANALYSIS
02-87 07109/87 3 0.02 U 0.0100 U 0.0220 U 0.0148 0.0069 U 0.005 U NR
02-87 10/07/87 4 0.02 U 0.0100 U 0.0220 U 0.0101 0.1869 0.005 U 0.04
02-87 10/08/87 ' INSUfflCIENr SAHPLE fOR "EIALS ANALYSIS
02-87 02/10/88 1 0.02 U 0.0100 U 0.0220 U 0.0064 0.0470 0.005 U 0.1 U
02-87 04/07/83 2 0.02 U 0.0100 U 0.0220 U 0.0063 U 0.0076 0.005 U 0.1 U
02-87 07113/83 3 0.020 U 0.0100 U 0.0220 U 0.0083 0.1808 0.005 U NR
02-87 10/20/83 4 0.02 U 0.0100 U 0.0220 U 0.0275 0.0472 0.005 U NR
02.87 11/14/83 4 INSUfflCIENr SAHPLE fOR HEIALS ANALYSIS
47-87
47,87
11/30/87 4
11/30/87 4
INSUffiCIENT SAMPLE fOR "ErALS ANALYSIS
INSUfflCIENr SAHPLE fOR "ErALS ANALYSIS
47-87
47,87
47-87
47,87
02/15/83 1
04/13/88 2
07/18/88 3
10121/83 4
DRY
DRY
DRY
DRY
48-87
11/18/81 4
INSUfflCIENr SAHPLE fOR "ErALS ANALYSIS
NR = Anatyte not reported
J = Present betow detection limit
U = Analyzed but not detected
B = Present in talxlratory btank
. = Hotding time not met
II = Batch spike not in 80. 120X range
-------
Groundwater
ssolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS OOWNGRADIENT OF THE 881 HILLSIDE
Uell Date HiI!jnesiun Manganese Mercury Mol ybdeouQ Nickel Potiliha Seleniuu
NUlber Sau-pl ed Qtr. (Mg), diss. (Mn), diss. (Hg), diss. (Mo), diss. (NI), diss. (K ), diu. (Se), diu.
mg/l mg/l mg/l 1119/1 l1li1 t 1119/t 11191 I
---- -----
02-87 05/29/87 2 NR NR 0.0001 NR NR 5.0 U 0.005 U
02-87 06/24/87 2 INSUffiCIENT SAMPLE fOR METALS ANALYSIS
02.87 07/09/87 3 12.2454 0.2178 0.0001 J 0.0511 0.0170 3.2 0.005 U
02.87 10/01187 4 12.6281 O."H 0.0001, 0.031,4 0.0370 U 6.2 0.005 U
02.87 10/08/87 4 INSUffiCIENT SAMPLE fOR METALS ANALYSIS
02.87 02/10188 1 17 . 0658 0.1759 0.0002 U 0.0220 1I 0.0170 U 2.3 0.005 U
02-87 04/07/88 2 22.91,80 0.1665 0.0002 U 0.0220 U 0.0170 U 1.9 0.005 U
02-87 07/13188 3 26.5500 0.1,179 0.0002 U 0.0220 U 0.0310 U 2.5 0.005 U
02.87 10/20/88 4 11.1l,71 0.51,31 0.0002 U 0.0220 U 0.0110 U 1.9 0.005 U
02.87 11/14/88.4 INSUffiCIENT SAMPLE fOR METALS ANALYSIS
47.87 11/10/87 4 INSUff ICIENT SAMPLE fOR METALS ANALYSIS
47-87 11/10/87 4 INSUff ICIENT SAMPLE fOR METALS ANALYSIS
l,7.87 02/15/88 1 DRY
47-87 04/13/88 2 DRY
47-87 01/18/88 3 DRY
47.87 10/21/88 4 DRY
'8-87
11/18187 4
INSUFFICIENT SAMPLE FOR METALS ANALYSIS
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
. = Holding time not met
N = Batch spike not in 80-1201 range
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGHADIEN'll OF 'l'HE 881 HILLSIDE
Uelt Date Sit ver Sodiun IIn StrontiUII Thalt lUll VanadlUl Zinc
Ntnber Sanpl ed Qtr. (Ag), diss. (Na), di:is. (Sn), diss. (Sr), diu. (fl), disi. (V). diu. Un), diss.
1119/1 1119/1 111911 II1g II 1119/1 119/1 1119/1
---- ------- --- ------ -.-.---
02-87 05129/87 2 Nil Nil Nil NR 0.01 U NR 0.02 U
02-87 06124/87 2 I NSlJff ICIENT SAHPlE fOR METALS ANALYSIS
02-87 07/09/87 ] 0.0076 U 147.4]89 Nil 0.4626 0.01 U 0.0240 U 0.0200 U
02-87 10/07/87 4 0-0076 U 144.1006 Nil 0.4115 0.01 U 0.0240 U 0.0201
02-87 10/08/87 4 INSUffiCIENT SAMPLE fOR MErAlS ANALYSIS
02-87 02/10/88 1 0.0076 U 12].2256 Nil 0.6156 0.01 U 0.0]60 U 0.0261
02.87 04/07/88 2 0.0076 U 119.1,989 NR 0.8552 0.01 U 0.0]60 U 0.0200 U
02-87 07/1]/88 ] 0.0076 U 120.5121 Nil 1.2]1] 0.010 U 0.0]60 U 0.0748
02-87 10/20/88 4 O.0076N U 111.2068 NR 1.4080 0.01 U 0.0]60 U 0.0488
02.87 11/ 14/88 4 INSUff ICIENT SAHPlE fOR METALS ANALYSIS
47.87 11/]0/87 4 INSUffiCIENT SAHPlE fOR METALS ANALYSIS
47-87 11/]0/87 4 INSUffiCIENT SAMPLE fOR METALS ANALYSIS
t,7-87 02/15/88 1 DRY
47-87 04/1]/88 2 OilY
t,7.87 07/18/88 ] OilY
t,7 - 87 10/21/88 4 DRY
48.87
11/18/87 4
INSUffiCIENT SAMPLE fOR METALS ANALYSIS
Nil = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
8 = Present in laboratory blank
* = Holding time not met
N = 8atch spike not in 80'120X range
-------
Groundwater
ssolved Metals Results
For Wells at Rockwell
ALLUVIAL WELLS DOWNGRADIEN'r OF THE 881 HILLSIDE
Uelt Date Aiunioull Aot imooy Arseoic
NUlber S8ITpied Qtr. (AI), diss. (Sb), diss. (As), diss.
1119/1 mg/I mg/I
--- -------- --..----
1,8-87 11/18/87 I, INSUFf ICIENJ SAHPLE fOR HEIALS ANALYSIS
1,8-87 02/15/88 1 0_0290 U 0.02 U 0.003 J
1,8-87 01,/13/88 2 INSUFfICIENJ SAHPLE fOR HEIALS ANALYSIS
1,8-87 07/18/88 ] DRY
1,8-87 10/21/88 I, DIU
55-87 11/30/87 I, INSUFf ICIENJ SAHPLE fOR HEJALS ANALYSIS
55-87 11/30/87 I, INSUFfICIENI SAHPlE fOR HEJALS ANALYSIS
55-87 02/15/88 1 DRY
55-87 01,/11/88 2 DRY
55-87 01/13/88 ] DRY
55-87 10/21/88 I, DRY
NR = Aoalyte oot reported
J = Present below detection limit
U = Aoalyzed but oot detected
B = Present in laboratory blank
(Rocky Flats)
Bar I ua
(Ba), diu.
mg/I
0.]110
Berylliw
(Be), diss.
II1II/1
0.005 U
Cacbh..
(Cd), diu.
l1li/ I
0.001 U
Calch..
(Ca), diu.
1119 / I
299 . ]]31
. = Holdiog time oot met
H = Batch spike oot in 80-120X raoge
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF 'l'HE 881 HILLSIDE
UeU Date Cesiun Chromiun Cabal t Copper Iron
NUllber Silllpled Qtr. (Cs), diss. (Cr), diss. (Co), diss. (Cu), diss. (Fe), dis5.
019/ I 019/1 1119 / I 1119 / I 1119 / I
- --- -- ---
Lead
(Pb), diu.
IIIU / L
LithiUII
(LI), diu.
mg/L
~8-87 11/18/87 ~ INSUffiCIENT SAMPLE fOR METALS ANALYSIS
~8-87 02/15/88 1 0.02 U 0.0100 U 0_0220 U 0.3270 0.0069 U 0.005 U 0.1 U
~8-87 O~/ 13/88 2 INSUfflCIENr SAMPLE fOR MErALS ANALYSIS
~8.87 01/18/88 3 DRY
~8-87 10/21/88 4 DRY
55-81 11/30/87 4 INSUfflCIENr SAMPLE fOR MErALS ANALYSIS
55-87 11/]0/81 4 INSUfflCIENr SAMPLE fOR MErAlS ANALYSIS
55-87 02/15/88 1 DRY
55-87 04/11/88 2 DRY
55-87 07/13/88 3 DRY
55-87 10/21/88. 4 DRY
NR ;: Analyte not reported
J;: Present below detection limit
U ;: Analyzed but not detected
B ;: Present in laboratory blank
. ;: Holding time not lllet
N ;: Batch spike not in 80'120~ range
-------
Groundwater
solved Metals Results
For Wells at Rockwell
ALLUVIAL WELLS DO.lNGRADIEWl' OF 'l'IIE 881 III LLS I DE
Uell Date HagnesiuQ Hanganese Hercury
NUlber Sanpl ed Qtr. (Hg), di55. (Hn), diu. (Hg), diss.
nag/l mg/l III!j/I
1,8-87 11/18/87 4 INSUff ICIENI SAMPLE fOR HEIAlS ANALYSIS
1,8-87 02/ 15/88 1 95_5074 0_1,31,0 0_0002 U
1,8-87 01,113188 2 INSUff ICIENI SAHPlE fOR HEIAlS ANALYSIS
1,8-87 07/18/88 3 DRY
1,8-87 10/21188 4 DRY
55-87 11/30/87 I, I NSUff ICIENI SAHPlE fOR HEIAlS ANALYSIS
55-87 11/30/87 4 INSUff ICIENI SAHPlE fOR HEIAlS ANALYSIS
55-87 02/15/88 1 DRY
55-87 04/11/88 2 DRY
55-87 07/13/88 3 DRY
55-87 10/21/88 4 DRY
NR = Analyte not reported
J = Present below detection limit
U = Analyzed ~Jt not detected
B = Present in laboratory blank
(Rocky Flats)
"01 ybdenua
("0), dilis.
1119 / I
0.01,95
lIickel
(IIi), diss.
1119/1
1.1827
Potllil h..
(I( ), diu.
II1II/1
1.0
. = Holding tine not met
N = Batch lipike not in 80-120X range
SelenilJll
(Se), diu.
RIg I I
0.033
-------
Groundwater Dissolved Metals Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIEN'!, OF TilE 881 IIILLSIDE
Uell Date Si I ver Sodiull 'in S t ront i un 'hall iun Vanadiua Zinc
NUlber Sanpled Qtr. (Ag), diss. (Na), diss. (Sn), diss. (Sr), dilis. (H), diss. (V), diu. Un), diu.
mg/t mg/t mglt lO9/t lO9/t IIIII/t lO9/t
--- - ----
1,8-81 11/18/81 I, INSUfFlCIENf SAMPLE fOR MEfALS ANALYSIS
1,8-81 02/15/88 1 0.0076 U 211.]1,62 NR 2.9066 0.01 U 0.021,0 U 2.1,559
1,8-87 01,/1]/88 2 INSUfF ICIEN' SAMPLE fOR MEfALS ANALYSIS
1,8-87 07/18/88 3 DRY
1,8-87 10/21/88 I, DRY
55-87 11/30/87 I, INSUfFICIENf SAMPLE fOR MEfALS ANALYSIS
55-87 11/30/87 I, INSUfFlCIENf SAMPLE fOR ME!ALS ANALYSIS
55-87 02/15/88 1 DRY
55-81 01,/11/88 2 DRY
55-87 01/1]/88 3 DRY
55-87 10/21/88 I, DRY
NR = Anatyte not reported
J = Present betow detection limit
U " Analyzed but not detected
B " Present in laboratory blank
. " Holding time not met
N = Batch lipike not in 80-120X range
-------
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
INORGANIC COMPOUND RESULTS
INTERIM REMEDIAL ACTION PLAN FOR. THE 881 HILLSIDE AREA
ROCKY FLATS PLANT. GOLDEN. COLORADO
-------
Groundwat:!
Inorganic Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIEN'!' OF THE 881 HILLSIDE
Nitrate.
~ell Date Total Dissolved Solids Chloride Nltrl te-Ni trogen Sui fate HC03-
NUliber Sampled Qtr. HG/L HG/L HG/L HG/l HG/L
64-86 04/29/87 1 438 38_0 1.28 168 162
64-86 OS/28187 2 INSUffiCIENT SAHPlE fOIl INORGANIC ANALYSIS
64-86 07/16/87 3 742 44.0 0.99 133 306
64-86 10/12187 4 DRY
64-86 02117/88 1 616 54. I 0.18 168 235
64-86 04/11/88 2 593 ,1,9.7 0.56 180 213
64-86 07/13188 3 DRY
61,-86 10/21/88 4 DRY
65-86 05/13/87 1 444 43.7 0.20 u 89.0 234
65-86 OS/28/87 2 1,98 1,6.2 0.20 U 103 269
65-86 07/16/87 3 I NSUff I C I EN r SAMPLE fOR INORGANIC ANALYSIS
65-86 09/09/87 3 655 64.0 0.20 U 190 306
65-86 10/19187 4 DRY
65-86 02129/88 1 529 62-0 0.08 116 134'
65-86 04/18/88 2 427 1,7.9 0.06 148 185
65-86 07/19/88 3 DRY
65-86 10/21/88 4 DRY
66-86
05/11187
193
17.0
0.20 U
26.5
100
Notes:
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in laboratory blank
-------
Groundwater Inorganic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS OOWNGRADIENT OF 'rHE BBl HILLSIDE
~ell
NLJlber
02.87
02.87
02.87
02.87
02.87
02.87
02.87
02.87
02.87
Nitrate.
Date Total Dissolved Solids Chloride Nitrite.Nitro~en Sui fate HC03.
SilllfJl ed Qtr. HG/l HG/l HG/l HG/l HG/l
-- -.----.---
061210/87 2 INSUff ICIENI SAHPlE FOR INORGANIC ANALYSIS
07109/87 3 5109 66 0.510 81.0 283
10/07/87 10 525 n.3 0.20 U 71 309
10/08/87 10 INSUfflCIENI SAHPlE FOR INORGANIC ANALYSIS
02/10/88 1 558 7J.0 0.02 U 81.0 387
04/07/68 2 620 71.10 0.02 U 83.0 371
07/13/88 3 595 910.2 0.02 U 102 381
10/20/88 10 623 9\.6 2.510 96.3 383
11/110/88 10 INSUfflCIENI SAHPLE FOR INORGANIC ANALYSIS
H-87 11/30/87 10 INSUfflCIENI SAHPlE FOR INORGANIC ANALYSIS
H - 87 11/30/87 10 INSUfFlCIENI SAHPlE FOR INORGANIC ANALYSIS
H-87 02/15/88 1 ORY
H-87 04/1]/88 2 DRY
H-87 07/18/88 :5 OR't
H - 87 10/21/88 10 OR't
108-87
1,8-87
Notes:
11/18/87
11/18/87
10
10
INSUFFICIENI SAHPlE FOR INORGANIC ANALYSIS
INSUFFICIENT SAMPLE FOR INORGANIC ANALYSIS
NR = Analyte not reported
J = Present below detect ion I imi t
U = Analyzed but not detected
-------
Groundwat
norganic Results
For Wells at Rockwell
(Rocky Flats)
ALLUVIAL WELLS DOWNGRADIEN'll OF 'l'IIE 881 HILLSIDE
Nitratet
lJe Il Date Total Dissolved Solids Chloride Nitrite-Nitrogen
NLJIVer Saupl ed Qtr. HG/l HG/l HG/l
--------.--- -------
1,8.87 02/15/88 1 2081 8j8 0.32
1,8.81 01,/13/88 2 INSUfflCIENI SAHPLE fOR INORGANIC ANALYSIS
1,8.81 07/18/88 3 DRY
1,8.81 10/21/88 I, DRY
55.81 11/30/81 4 INSUffiCIENT SAHPLE fOR INORGANIC ANALYSIS
55.81 11/30/87 4 INSUffiCIENT SAHPLE fOR INORGANIC ANALYSIS
55.81 02/15/88 I DRY
55-81 01,/11/88 2 DRY
55-81 07/13/88 3 DRY
55.81 10/21/88 4 DRY
Notes:
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
B = Present in taboratory blank
Sulfate
HG/l
218
Hc03-
HG/l
-------
Groundwater Inorganic Results
For Wells at Rockwell (Rocky Flats)
ALLUVIAL WELLS DOWNGRADIENT OF '1'1IE 881 IIILLSIDE
Ni trate>
Uell Date lotal Dissolved Solids Chloride Nitrlte-NitroQen Sui fete HC03-
Nunber Ssnpled Qtr. H(i/L H(i/L H(i/L H(i/l "G/L
-
66-86 OS/28/87 2 2"9 19.8 0.20 U 33.0 150
66-86 01/17/87 3 DRY
66-86 10/19/87 I, DRY
66,86 0]/]1/88 1 209 1,2.6 0.09 27.0 73.9
66,86 06/02/88 2 16] 20- 1 0.02 u 21,.8 83.9
66-86 10/07/88 DRY
66-86 12/23/88 DRY
69-86 01,/29/87 1 1017 114 2.30 270 385
69-86 OS/26/87 2 929 85.5 1.80 53.0 379
69-86 01/06/81 3 892 85 1.12 161 362
69-86 10/01/87 I, 8'" 91.1 1.10 173 315
69,86 10/08/81 INSUfflCIENI SAHPLE fOil INORGANIC ANALYSI5
69-86 02/10/88 1 997 113 1.66 260 1,01
69-86 0"/11/88 2 960 lu2 3.90 231 381 .
69-86 07/18/88 3 915 10" 4.29 256 382
69-86 10/20/88 I, 89" 18.2 1.92 253 331
02-87
OS/29/81
2
5H
66.0
0.20 U
99.0
275
Notes:
NR = Analyte not reported
J = Present below detection limit
U = Analyzed but not detected
-------
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
TOTAL RADIOCHEMISTRY RESULTS
INTERIM REMEDIAL ACTION PLAN FOR THE 881 HILLSIDE AREA
ROCKY FLATS PLANT, GOLDEN, COLORADO
!
-------
08/25/89 Page 1
TOTAL RADIOCHEMISTRY RESULTS SUMMARY
FOR GROUND WATER AT Rockwell (Rocky Flats)
Nuar of S~les
/IIuillUD /IIinillUl AboYe Below Not /IIeen
\nalyte Value Value Detection Detection Ret:'Orted Value*
\LLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
jross Alpha (pci/l) 130 ~ 17 5 ~ 110 8 0 0 38
;ross Beta (pci/l) 100 ~ 12 .8 ~ 2 8 0 0 43
Jranium 233, 2310 (pci/l) 12 ~ 3 0.0 ~ .510 8 0 0 5.162
Jranium 235 (pci/l) . 71) ~ .76 .010 ~ .32 8 0 0 0 . 2810
Jranium 238 (pci/l) 33 ~ 5 0.94 ~ 0.6 8 0 0 6.980
;trontium 89, 90 (pci/l) 4.01 ~ <1.0 ~ 7 0 1 1.517
'lutonium 239, 240 (pci/l) 0.9~1.1 0.0 ~ .65 8 0 0 0.158
\mericium 241 (pci/l) 0.0 ~ 6.0 0.0 ~ 1.1. 8 0 0 0.000
:esium 137 (pci/l) 1.4 ~ 1.4 ~ 1 0 7 1. 400
'ritium (pci/l) 300 : <110 ~ 8 0 0 53
For activities above detection only.
j
I
J
J
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 IIILLSIDE
~ell O':"le GII..)~S Alpha G, a:.s U<.:I.I LJr.milill 2.B, 2SI, UraniuD 25S
N,."ber Sall~jl<:d 01 r. pl i II pC111 pC ill pCi/l
~ ------- - -------- ~._-----
(,1,,116 U~/2Y/III I '> ~ II, ,8 ~ l 1.1 . 1.0 .15 ~ .I,U
-
64 .116 U'>1211/til 2
6~-1I6 UI !lbllll ~
6l, .1J6 10/12/111 I, OilY
64.1J6 U2/1111111 I S<:e di""ulv<:d I ~d&ULhcllll:}[1 y.
64 86 01,11 I III!! 2 See dis"olved I ,IJ i oc helll,,, t I y.
6l, - 86 U7/ HI!!/! 5 OilY
6l, . 86 10/21/88 I, (lilY
6S'!!6 OS/IS/!!7 I 51 . I, I, ~ \U ].6 ~ 1.1 .01, ! .52
-
65.ti6 05121J/til 2 16 ~ 0 1,2 ~ 51 1,.0 ~ 1.1 0.22 !. 0.11
65-86 07/16/!!7 5
65,86 09/09/87 5 Set.: di"sulved r.lJiachemlstry.
65-86 10/19/87 I, DRY
65-116 1I2/2'J/IIII I See di"solvL'd ,,,Jiaclll:lIIlstry.
65,86 01,11!!/1I!! 2 See dissolved raJiochclIIlstry.
65,86 07119/88 J DRY
65-86 10/21/88 I, DRY
66-!!6 U5/11/!!7 2:S . H 2ti ~ 27 0.0 . ,51, .15 ! .1,6
- -
Not",,;
NR ,. Analyle lIot '''1''''1<:<1
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF '{'liE 881 IIII.I.SIDE
\.Ie II
111..1111111 231l
p(i/I
SIIOIIII..11 tl9,YO
pC 1/1
Piulolliull 239
1J"le
SWlplcd
all'.
NI~llbcr
pCi/i
-----
- -------.
- - - -- -
-----~.-
- ----
-----------
tJ4-tl6 1J4/N/U/ 1
6l. -1i6 OS/2B/1i1 2
64.86 01/16/81 3
64-86 10/12/87 I,
64-86 U2/17/8B 1
64-86 04/11/88 2
6l. - 86 07/13/88 3
64-86 10/21/88 I,
65-86 0)/13/87 1
65-86 1J)/28/81 2
65-86 0//16/87 5
65-86 U9/U9/87 5
65-86 10/19/87 I,
65-86 02l29/1J8 1
65-86 04/18/88 2
65-86 07/19/88 5
65-86 10/21/88 I,
66-86 0)/11/87
2 - 1 ~ I.IJ
NI<
u.2 ~ 1.1
. ..
DRY
See Jb~oIVl"lJ 1.ldllkhellll~lry.
See dissolved f..Jiuchelilislfy.
DRY
ORY
I.Y~IJ-1
3-3 ~ 1.0
1./1,
<1.0
0.0 ~ .65
0.16 ~ 0.78
See Ji:.:.ulvl.'lJ f.,dlulhell,lslly.
OI
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIEN'f OF TilE 661 HILLSIDE
Yell lJiJlc Cc~ iUIi 1.iI Ir.t illil
NUIlLer SiJJI~)1 cd UtI'. pCI/1 pCi/1
---- ----.---- .- --. - '-- ---- --~----_.-
64 . tl6 04/2'J/81 1 IH< "110
64,86 05n8/81 2 ...
64,86 Ul/ 16/8/ .s
64-86 10/12/87 4 IJI<¥
64-U6 02/11/1111 I Sce dlS~ul ved I dd HIt hl'III' S U y.
64-86 U4/11/118 2 Sec dl$~ulvc.J I "dllJl helill ~t..y.
64-86 UI/ H/IIII 3 LJI<¥
64-U6 10/21/1111 4 LJI<¥
65-86 U5/13/87 I NR <110
65-86 OS/28/87 2 NR < 110
65-86 07/16/87 3
65-86 09/09/87 5 See dissulvcd r;"JI ochcmi $t ry.
65-86 10/19/87 I, Din
65-86 02/2'11118 I Scc dis$olllc.J r..,Jio(hclllistry.
65-86 01,/18/88 2 Sce dissolved r,IlJi ochcmi s t ry.
65-86 0//19/118 3 DR¥
65-86 10/21/88 I, DR¥
66-86 05/11/87 NR <110
Notcs:
IIR = Analytc nul I-Cl'o.....
-------
Groundwater 'I'otal Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS nOWNGRADIEN'r O~' 'rilE BBl HILLSIDE
Yell
O.IIe
NI~lIber
S,IIIf,1 ed
OIl'.
Gro;;s AII'""
pCi/1
Gross Oel"
UrUU/U/ ~ ~I .!. U .,., .!. (, U.~ . (J.n 0.07 .!. 0.39
-
66'U6 (J//1/JUI S OIH
66-86 1U/19/U/ I, OHY
66 U6 US/SI/IIU I See di~suilled , .ullud.ellllsil y.
66-U6 U6/U2/UU 2 Sec dissolved I "dIO(helili sHy.
66-U6 1U/U7/UU OHY
66-U6 12/23/IIU OHY
69-U6 0~/~'i/U7 1 I,(J .!. 7 1,9 . 75 12 .!. 3 .66 .! .62
-
69-86 OS/26/87 2 1,1 . H 7S .!. 2 10 .!. 2 0.3 .! 0.51
-
69-86 07/06/87 3 Sec dissulved r"dll" "eIlIlSlry.
69-U6 10/07/137 ~ Sce diSsolved I "dl uLhell.i S I ry.
69'U6 1U/OU/87 Sec dissolved I "dlUl helllisi. y.
69-U6 02/ 1lI/1I8 I See di~sulv"d . IUJllit. 11\.'1111 ~II y.
69-86 01, /11/813 2 Sec dissolved Iildlod'clllisiry.
69-86 07/18/118 :S See dissolved I "dlUI helill slry.
69-86 10/20/88 I, Sec ~issolved I ,,,Jlud',,,II'S!! y.
02-U7 OS/29/87 2 130 . 17 100 .!. 12 9.6 .!. 2.6 .70.! .76
-
02-87 06/21,/87 2
NOles:
NR ; Analylc 1101 r"1"1IIe<.l
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF 'rHE 881 HILLSIDE
Yc!1 Oille III- illi i UII 25U S I 1'01111'"11 U'i. YU Pluloniun 239 AmericiUli 21,1
NUIlLef Si'"~jl <:d OIL pCi/1 pCi/l pCi/l pCi/l
---- ..-- ----- -- .+.-------.. ------- - ++- -
66-116 lI~/tU/Ui 2 U - ')1, .!. U-6 5-5 0.0 ! 0.65 0.0 ! 1.1
66.86 0//11/111 5 1)10
66.116 10/19/111 I, OilY
66-U6 01/31/I1U 1 Scc di:.:,ulv<:d I.H'IUlh<:lIIi:;1I y.
66-86 06/02/I1U 2 Sec <.Ii:;solvc,. f...dl OC'H:llli S try.
66-86 10/0//118 OilY
66-86 12/23/88 DRY
69-86 01,/29/87 1 13 . 5 .83 0.0 ! 2.1 0.0 ! 1.3
-
69-86 OS/26/87 2 7.2 . 1.3 <1.0 0.0 ! 0.6 0.0 ! 1.8
-
69-86 07/06/87 3 See di:;~ulv"d 1 ..dlu(h<:IIIISlIy.
6986 10/01/81 I, S<:c di:.solv"d ,..dIOd,<:IIIISlfY.
69-86 10/08/87 See dis,.olv<:d ,..diud'''lIIblfY.
69-U6 U2/!U/UU 1 See d':;~u'vt:d . .adH.Il"'IL'IIIIS(1 y.
69-86 UI,/11/88 2 See dissolv"d ....dlu,h<:lIIi Slfy.
69-86 U7/111/88 3 Sec dissolved ",dluchclllistfy.
69-86 10/20/811 I, Sec di:;solvcd .adiuch,,",istfY.
02-87 OS/2'i/87 2 6-3 .!. 1.',1 U.71, 0.9 ! 1.1 0.0 ! 6.0
02-87 06/21,/87 2 ...
lIol<:S:
NR = Allidyle nlH f<:polled
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Piant
ALLUVIAL WELLS DOWNGRADIEN'r OF 'l'HE 881 HILLSIDE
IJc II
O"le
Silllplcd
Qlr.
Cc~iull \.SI
pC i /I
, r I I i 1111
NI.lober
pCi/l
----
--- ------..
- --- . .-
-----.
. ----
66-86 U5/2£1/87 2 UII < 110
66-86 0//11/'d1 3 010
66-86 IU/19/81 l, OilY
66-86 03/51/08 1 Scc dissulv<.:d ,...diu,hclllisiry.
66-86 06/02/118 2 See dis~ol ved r.hl. u(h<.:lIIi S I ry.
66-86 10/07/118 OilY
66-86 12/23/88 OilY
. 69-86 0l,/2Y/1I7 1 Nil 30U
69-86 U5/26/87 2 Nil <110
69-86 07/06/'d7 3 S<.:e dissolvcd I ildluch<':lIIislry.
69-86 10/07/87 l, See dissolvcd Ii.ldiochclllisiry.
69-86 10/08/87 See dissolved r,HJIO(hcmisl, y.
69-86 02/10/08 1 See dlssolvcd ".d I Ul h <.:m i Sll Y .
69-86 Ol,/ 11 /8'd 2 Sce dissolvcd r i.ldi o(hcmi Sl ry.
69-86 07/18/88 3 Sce dissolved I "dioc'H:mislry.
69-86 10/20/88 l, Sce dissulvcd radi uchemi stry.
02-'d7 U5/29/'d7 2 1.1, 120
02-87 06/2l,/87 2
NOlcS:
Nil = Analyle nOI reponed
-------
Groundwater Total Radiochemistry Results
ALLUVIAL WELLS DOWNGRADIEN'r OF '!'UE 881 HILLSIDE
tor Wells at Rocky Flats Plant
lJe II
0,,1'::
S;JlI~)1 <:tJ
t~1 u:.~
NIIIJJ"r
Ulr.
I'CI/I
-- ----
. --. -~_.
-" -- - - -.
U~ IJI 1I//IIII/UI .s
02 81 IU/UI/III I,
U2'81 lO/tJU/UI I,
U2'81 1I2/III/UU I
U2.87 0l,/U7/1I11 2
02-87 UI/U/UII .s
02.87 1O/2U/88 I,
02'87 II/Ii, / U8 I,
1,7.87 11/.sU/U7 I,
1,7.87 lldO/87 I,
47.81 (J2/1~/UU I
47-87 Ul,/U/U8 2
1,1-87 Ul! HI/U8 3
47-87 1O/21/U8 I,
1,8 81 11116/UI I,
I,8-U7 11/18/U7 4
I,B-UI 1I2/1~/I\U
Nole,;:
AII'll..
Gfu~S Ut:ld
Ur""".11 2B, 2.sl,
pCi/l
pC ill
--. -- -- --- -_.-
-- ------
-------------
~L'I.: dl~sU'Vt:tJ fddIO("L'IIII~tl y.
~ee l..Iis~olv<:tJ I ..tJi(j(h<:llIistl y.
See tJ.,;sol v<:ll I ..dlOl h<:iIIlstry.
S<:e dIS~olvl:tJ ,,,diu,h"iIIistry.
See tJissolv<:tJ
See dissolv<:tJ
,. atJ 1 Od'<:1II1 S t ry.
,,,dlod'<:iIIlstry.
1 ..d 1 o( h <:'111 S try.
S<:e dis::olv<:d
.. .
1'1< t
OIlIC'd
... ~ III,;ulficielll S"II~)le lor l
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT'OF TilE 881 IIILLSIDE
Uclt Oalc Uraniull 258 Sl rorU iUIi 8',1. ',II) Pluloni~1I 239
Number Sallpl cd (Hr. pCi/1 pCi/1 pCi/1
--- ------ --- -- -- ------+ ---
02 -Ii 1 UI/UY/Ii/ 3
02 -1i7 IO/U//81 I,
02 87 10/08/81 I,
02-87 02/1U/IIU 1
02-87 01,/07/88 2
02-87 07115/88 3
02-87 10/20/88 I,
02 -1i7 11/14/88 I,
47-87 11/5U/1i1 I,
47-87 11/3U/81 I,
47-117 02/1)/1111 1
47-87 0i,/13/IIU 2
47-87 01/18/88 3
47-87 10/21/88 I,
1,8-87 11/18/81 I,
48-87 11/18/87 I,
1,8-87 02/15/1111
See dl~~ulved ...HIIUlhe"'bUy.
See dls~olved ...dlulhe",isU y.
See dissoillcd ,..diulllclIIlSII y.
Sce di s~ol VClJ I ..dl ud'e"ll ~ I ry.
See dissolved
Sce dissol vcd
radiochemislry.
I ..d I U( II elll i s lr Y .
r..dlulheillislry.
Scc dissoilled
...
.. .
OIH
ORY
DRY
ORY
.. .
See dissoilled I'..diulhclllisu-y.
NOles:
NR = Analylc nol reponed
... = Insufficienl S.Jlliple for Radiochemi~II'Y An..tyscs
AmericiUli 21,1
-------
Groundwater Total Radiochemistry Results
tor Wells at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIEN'f OF '}'III::: 881 HILLSIDE
~cll Oal" [t;SIUlIl HI ,.. i I i UII
NUILc.. Silll~JIt:J UII' - pCi/1 pCi/1
---- ------. ---- - ------.--.--- --.--------.---
02.!!7 OOWN87 j 5<:" dl~~olv<:J ILldH>chl'iIIisIfY-
02.87 10/01/117 i, S"e dlssolv<:d I ildll"h<:1II1 S I"y-
02.87 10/011/87 i, 5<:" dl~solv<:d I tid I lit It cUI i S If)' .
02.U7 02/10/UU 1 S<:<: dl~,.lJlv<:d I .ld'('LhL'IU'~t. y.
02.87 0i,/07/UII 2 5<:" di:.sulv<:d I adllH 11l:llli siry.
02. II 7 Ol! H/UU j 5<:" dl:.~olv<:J I ddHH hl.:IIU~11 y.
02 117 1O/20/UU i, See dl "".1 v<:d ,.HJlolIH:III'~t. y.
02'!!7 11 /Ii, / UU i,
i,l-87 11/30/117 i,
i,7-87 11/30/87 i,
i,l'87 02/1"/111} 1 lJ~Y
i,l - 87 0i,/l3/U8 2 lJ~Y
i,7.U7 07/III/uu j 010
i,7.U7 10/21/811 i, lJ~i
i,1} U7 11/1II/8i' i,
i,8.87 11/1U/8/ i,
/,IIUI O;?/I"/UI} Set.: dl :.~;u' ",cd I..d IlIl h <:1111 S I .. Y -
Noles:
N~ :- Au..' ylC I),-l I "IJI,r(l:d
... .=
-------
Groundwater Total Radiochemistry Results
ALLUVIAL WELLS DOWNGRADIEN'f DE' 'filE 881 IIILLSIDE
tor Wells at Rocky Flats PI~nt
~l:1I
OiJl(:
Silll~)Il'd
all -
Nlill~H!1"
--
411-111 U4/15/1I11 2
1,11-117 011111/118 5
1,8-117 W121/8U I,
~~-III 11/5U/1I1 I,
55-117 II/5U/81 I,
55-117 02/1 ~/IIU I
55-87 OI,III/8U 2
55-81 011 H/1I8 5
55-III 10/21/1111 I,
NOles:
1,l"u:,:, AII.II"
1'[ 1/1
- --------
010
Ok.
010
Ok.
Ok.
Ok.
(,1 u,,:. IJt:I"
u. "II 11.11 2 H. 2.s1,
~i/I
pC III
- ----- ._- ----
-----
-.--
- -----
Nk = Al\alyle 1\01 I"cpunecl
... = Insult ic ienl SiJllple tUI kiJdlUcllelllisll y AII,dyses
Uraniun 215
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIEN'l' OE' 'l'ltE 881 HILLSIDE
\Jell Oate (J, iH'IUBI ~5U $1' Ullt 1"" II-}. '/U PI ut 0111.." ~.s9
NI.'~)(!r S;III~,Il'd Qlr. pC ill pC III pCi/l
----- . ----.-------,- - .----- ---- _._---
I,U III UI,II5/I1U l
I,U.87 Ollltl/tiU .s
I,tI U7 1II/21/U8 I,
~~ U7 1115l1/ill I,
5~ ,87 1 I I5l1/t1 7 I,
5~ 117 021 15/iltl 1
55 .117 01,/1 I/BtI 2
55.tl7 0//11/11t1 :s
55 .111 10/21/UU I,
ORY
ORY
...
ORY
IJRY
ORY
ORY
Nutes:
NR : Alia I yle 'hit I "p..rle<.l
*.. ::
IlIs"lficiCllt Sill"plc lur R"diodIL'IIIISlIy Analyses
Auaeri ci UII 21, 1
-------
Groundwater Total Radiochemistry Results
for Wells at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF TIlE 881 HILLSIDE
NI.I~)er
011.
Cesium 137
prill
II II i 1111
~ell
Dille
S.Jn~)led
1'( i II
-----
--------- ~-
41Hil 01,1 U/II!! 2
1,6-87 0711!!/!!!! 3
1,8-87 10121/!!!! I,
5'>-!!7 1I/30/!!7 I,
55-!!7 11/50/87 I,
55 -III 02/1'>/!!!! I
55-87 01,11 1/!!6 2
55-1.11 Oll 13/88 J
55 -!!I 10/21/86 i,
ORV
ORV
...
URV
OIlV
ORY
1111 V
Noles:
NR = Ana I yl c nul report cd
-------
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
DISSOL VED RADIOCHEMISTRY RESULTS
INTERIM REMEDIAL ACTION PLAN FOR THE 881 Hn.LSIDE AREA
ROCKY FLATS PLANT. GOLDEN. COLORADO
-------
08/25/89 Page 1
DISSOLVED RADIOCHEMISTRY RESULTS SUMMARY
FOR GROUND ~TER AT Rockwell (Rocky Flats)
NurCer 01 S..,les
M IIJI i IIUII MinillUl Above Below Not Mean
Analyte Value Value Detect;on Detection Reported Value8
ALLUVIAL ~LLS DOWNGRADIENT OF THE 881 HILLSIDE
Gross Alpha (pci/l) 100 ~ 70 1 ~ 4 18 0 2 24
~ Gross Beta (pci/l) 254 ~ 68 .4 ~ 17 18 0 2 31
Uranium 233, 234 (pci/l) 13.180 ~ 1.~O 0.12 ~ 0.24 20 0 0 6.955
Uranium 235 (pci/l) 0.8 ~ 0.5 0.00 ~ 0.03 18 0 2 0.252
Uranium 238 (pci/l) 8.9 ~ 1.6 0.03 ~ 0.23. 20 0 0 4.350
Strontium 89, 90 (pci/l) 5.6 ~ <1.0 ~ 4 0 16 2.850
~lutonium 239, 240 (pci/l) .42 ~ ..81 .0.Qi.2 ~ 0.037 19 0 1 0.039
Americium 241 (pcill) 0.5 ~ 2.5 ..04 ~ .75 18 O' 2 0.029
Cesium 137 ( ) 0 0 20
Tritium (pcifl) 510 ~ 290 <220 ~ 18 0 2 52
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF 'I'IIE 881 HILLSIDE
Ucll
Date
SallfJ' cd
Otr.
Gross Alpha
PCI/L
Gross Bct a
NlIIJLer
(HDA)
PCI/L
(HDA)
Uranilill 211. 211t
PCI/L - (HDA)
Uraniua 215
PCI/L
(HDA)
610-86 010129/81 I See total f adl oc h<:111 1 stry.
610-86 OS/28/87 2 ...
610-86 07116/87 1 ...
610-86 10/12/87 10 DRY
64-86 02/17/!i8 I 10 !. 8 -2 !. 12 I. 7 !. 0.1t 0.17!. 0.11
610-86 04111/88 2 6 !. 8 17 5 !. 16 18 1.0 !. 0.4 0.07 !. 0.04 0.09
610-86 07/B/88 1 DRY
610-86 10/21/88 It DRY
65-86 0511 1/87 I See tOlal radiochelllislry.
65-86 OS/28/87 2 See total radiochelilistry.
65-86 07116/87 1 ...
65-86 09/09/87 1 15 !. 19 29 21 !. 27 66 4.2 !. 1.9 0.4 .!. 0.5
65-86 10/19/87 10 DRY
65-86 02/29/88 I " !. 9 -It !. 17 5.5 .!. 0.5 0.11t !. 0.08
65-86 04118/88 2 10 .!. 6 7 .!. 10 22 2.8 .!. 0.4 0.07 .!. 0.04 0.11,
65-86 07/19/88 1 DRY
65-86 10/21/08 10 DRY
66-86 05111/87 See lolal raJiochclilistfY.
NOle:;;
NR = Analyle nOI repeu led
... = In:;ult icient S,,"~}le for RaJiorhellli"try Anilly:;es
-------
Groundwater Dissolved Radiochemistry Results
tor Regulated Units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 HILLSIDE
~ell Oale uraniull 2j8 SIron! iUIi 8',1, 90 Pluloniun 219, 21,0 Amedcillil 21, 1
NlMllucr Sawpled aIr. PLI / l (HOA) PC III (HOA) PCI/l (HOA) PCl/l (HOA)
----- ----..
64.U6 04/29/8/ 1 See lulal I ..dIL" hl'llIi~11 y.
64.86 OS/28/87 2
64.86 0016/87 1
64 .86 10/12/87 I, OIH
64.U6 02/17/IIU 1 1. 2 !. U.j Nil 0.00 !. 0.22 0.00 !. 0.11
64-86 04/11/88 2 2.5!. 0.1, NR 0.00 ~ 0.05 0.19 NR
64,86 071 11/88 j (iRY
64,86 10/21/88 I, OilY
65-86 05/B/87 1 See IOlal ."diuchemislry.
65-86 OS/28/87 2 See lulal radiodlcwi S I ry.
65.U6 07/16/87 j
65-86 09/09/87 j 1.0 ~ 1.~ 1.<,1 2.0 - .01 ~ . 16 ~.9 .02 !. .j2 0.1,
65-116 10/19/87 I, ORY
65-U6 02/29/88 1 CO~ 11.1, NR 0.00 ~ 0.25 0.00 !. 0.20
65-86 04/18/88 2 2.1 !. 0.1, NR 0.02 ~ 0.06 0.15 0.00 !. 0.16 0.81,
65-86 07/19/88 j ORY
65-86 10/21/U8 I, ORY
M-U6 05/11/87 See lul.II r ;,d I ue heWI S I I y.
Uutf..'S:
NR = Allal}'le lIul 1l"fIUIIo:d
.... =
I..sull ic lelll S.IIlIple 101
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 IIILLSIDE
\Ie II Date [c:,;iull 151 Iri t iUIi
Nl~lolJcr S"II~)I ed at... 1'[lIl (HlIA) PCI/l (HUA)
-.---- -_u_- - ----- - -- ------- - - -- ----
6/. - U6 04/cY/UI I
6/. -116 O')/ZU/Bl 2
64 -Ub Ul/ 16/111 1
64 Ub 10/12/111 4
6/. - U6 02/17/UU I
64-U6 04/1I/U8 2
64-86 011 B/88 1
64-86 1O/21/UII 4
6')-116 05/ B/Ul I
65-116 OS/211/111 2
65-86 07/16/117 1
65 86 09/U9/87 1
65-86 10/19/87 4
65-tl6 02/29/U8 I
65-86 04/18/88 2
65-U6 07/19/88 1
65-86 10/21/118 4
66-Uo 05/11/87
NUl",; :
Sl:C tut..1 I ,.dl." hl:IIII~I' y-
lIRY
w< -NO
UR -220 nu
lIkY
DRY
SLoC tllt,,1 t ,Sdalh ItCHlI ~tl y.
Sl:C tut..t ,..dIUlhclIIl~lIy-
Uk -5uY
IH t ry-
...... -
N~ = AIt,j'ytt~II(Jllt.'JHJJll.d
ILH.Jllh.:hclIll:>(1 y An'.'VJl:S
-------
,
Groundwater Dissolved Radiochemistry Results
tor Regulated Units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
~ell
NUliber
Date
Sanpl ed
Qtr.
Gross Alpha
PCI/L
Gruss Bela
(HDA)
PCI/L
(HOA)
Uraniun 211, 2110
PCI/L (HOA)
Uranh... 215
PCI/l
(HOA)
66-86 OS/28/li7 2 See tolal r "Jioclll.:ml S I ry.
66-86 07/17/87 1 DRY
66-86 10/19/87 " OilY
66-li6 01/11/88 1 12 ~ 5 1 .:. 11 2S 0.20 ~ 0.16 0."1 0.01 ! 0.07 0.19
66-86 06/02188 2 1 ~ " 9 6 ~ 8 18 0.12 ~ 0.21, 0.86 0.00 ! 0.01 0.10
66-86 10/07/88 lJRY
66-86 12/21188 OilY
69-86 04/29/87 1 See lolal radiochemislry.
69-86 05/26/87 2 See 10lal radiochemistry.
69-86 07/06/87 1 S9 ~ "0 78 ~ "2 9.1 ~ 1.9 0.8 ! 0.5
69-86 10/07/87 I, 51 ~ 10 "8 ~ 10 8.1, ! 0.9 .35!.12
69-86 10/08/87 NR NR 8.707 ~ 1.107 NR
69-86 02/10/88 1 16 ~ 8 7 t 1'> 9.1, ! 2.5 0.65 ! 0.1,6
69-86 04/11188 2 1" ~ 8 I, . 11 25 11 ~ 1 0.38 ! 0.07
69-86 07118/88 1 8 ~ 1 9 !. 1 10 !. 1 0.19 ! 0.06
69-86 10/20/88 " Oala 1101 yet received
02-87 05/29/87 2 See 10lal radiochcmislry.
02-87 06/210187 2 ...
NOles:
NR = Analyle nol reported
-------
Groundwater Dissolved Radiochemistry Results
for Regulated Units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 HILLSIDE
IJc II
Dale
Sallipl cd
Qlr.
NUloLcr
66-86 05/28/H7 2
66-86 07117/87 3
66-86 10/19/87 I,
66-86 03/31/H8 1
66-1J6 06/02/88 2
66-86 1O/07lHH
66-86 12123/8H
69-86 04/29/H7 1
69-86 05126187 2
69-86 07/06/87 3
69-86 10/07187 I,
69-86 10/08/87
69-86 02/10/88 1
69-86 04/11/88 2
69-86 07/1H/88 3
69-86 10/20/88 I,
02.87 05/29/87 2
02.87 06/21,187 2
NOles;
Ur"niull 238
Pel/l
(HUA)
Slrontil.1I !I'll, 90
PCl/l (HUA)
---'----
--
See tolal 1-"diod'\:lIIislfy.
DRY
OR\'
0.36 !. O. \j
u.03 !. 0.23
OR\'
ORY
0.37
0.8i
NR
NR
Sce tolal r ojdlOCh\:1II1 s I ry.
Sce tolal radiochclllistry.
8.9 !. 1.6 3.8
6.5 !. 0.7 <1.0
6.275 !. 0.761 NR
8.1 !. 2.2
H.O !. 0.9
7.1 !. 0.7
Oojla nOI ycl I"clcivcd
NR
NR
NR
SCC lolal '""dlOlhcllilstry.
...
NR = An"lyte nOI I-cpollcd
... = Insuf t icient S"II~jlc lor Radiochemistry Analyses
Pluioniull 239, 21,O
PCI/L (HDA)
0.00 !. 0.16
0.00 !. 0.04
- .02 !. .69
0.00 !. .22
-0.01,2 !. 0.031
0.02 i 0.21
NR
0.00 !. 0.06
0.57
0.11
0.7
1.6
.
Americiuu 241
PCl/l
(HUA)
0.00 ! 0.40
0.00 ! 0.10
0.5! 2.5
0.00 ! .05
0.00t, ! 0.040
0.00 ! 0.]0
NR
0.00 !. 0.17
1.]
0.]6
].7
-------
Groundwater Disso
Radiochemistry Results
for Regulated Units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 HILLSIDE
Yell
NIMlber
Dale
S,,"~led
Ce$ilMIl I.SI
J r i I i 1111
a If.
PLJ / I
(HUA)
PCI/I
(HUA)
-----"--------- ---
-_._----
66-86 OS/28/81 2 See 101..1 ,...dlul 11<:1111$11 y-
66-86 07/17/87 :S ORY
66-86 10/19/87 I, ORY
66-86 03/31/88 1 NR -2 \0
66-86 06/02/88 2 NR <210
66-86 10/07/88 OIH
66-86 12/23/1111 010
69-86 01,/29/87 1 See 101,,1 r...dl La h<:11I1 $II"Y.
69-86 OS/26/87 2 See lulal r..di odll.:llli $I'"y.
69,86 07/06/87 :S IjR -1,93
69-86 10/07/81 I, NR ~ 10 !. 29U
69-86 10/08/87 NR NR
69-86 02/10/88 1 UR <2 \0
69-86 01,/11/88 2 NR -~uU 200
69-86 07/18/88 3 NR 2uO
69-86 10/20/88 I, O...la 1101 yel . CLL'. Vl.'J
02-87 U~/29/8/ 2 Set: 10lill . lid Ill( hl'lIIl $, t,. y.
02-87 06/21,/87 2
Noll:$:
UR = AI1.:Jlyle nul I ('lhlnCa
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELl,S DOWNGRADIEN'r OF 'f'UE 881 h!.LLSIDE
\Jell Dale GIO:;S Alpha Gross 6.:1 ,I Ur all il.n 2 H. 214 UraniUli 21~
N'",~)er S all~) I cli all'. pC! /l (MlJA) PCI / l (HUA) PCI/l (HOA) PCI/L (MDA)
----- _h -. ---- -.- -~--- --_._- ---~_._---
U2-1I1 0 I/OY / til 5 11)11 ~ III 2'>4 !. t.1I 8.11 ~ 2.4 o.} ! 0.1, 2.0
U2-87 \(J/1I7/lll l, (,t. . 42 Yo !. )11 11.0 ! 1.0 .}~ ! .11
-
02.87 lU/ull/87 l, /Hi NR H.ltiO ! 1.7'>0 HR
02 IJI 112/ JI)/IILJ I 1\1 . 12 (, . d 1.4 ! 0.0 0.26 ! 0.011
- -
02-IJ7 Ul,/Ol/LJII " II ! 1/ 51 ') ~ 1'/ <,s 7.6 ! U.6 0.08 ! 0.02 0.21
02.til lI7/H/1I8 1 11 ! 1 b ! 2 9.2 ! 0.\1 0.13 ! O.O~
02-117 10/211/ IJII l, O.tld Ih)l )'d f L't"L" \led
02.87 11/1l,/IIIJ l,
l, 7 - IJI 11/311/117 l,
l, 7 til 11/511/111 l,
l, I- III 112/1':>/1111 1 litH
l, 787 1Il,/IS/II11 2 1)1l Y
l,7-B7 UI/II1/1I1I 5 1,IlY
l,! 111 10/21/88 l, UtO
1,8 III II/HI/IJ{ l,
l,8 IJ7 11/I8/IJ! l,
l,1I III 02/1'>/11£1 2(, . II 12 . 15 7.7 . I.':> 0.16 ! 0.18
- -
U,HI'".:
Ill,
r\ I I. I ~ ,. I l' . I' , l " .. I' '. 'I', 1
. ill',ut t Il. It"l\I ~,hllll.,tl' '.1'
tCldl'l\ 1111111",\1,' AII.Jt~:.,.:.
-------
Groundwater Dissolve
adiochemistry Results
for Regulated Units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
\Jell
NUIlLe r
UraniUR 238
PCI / l
Date
Sampl ed
StrontiuR 89, 90
PCI/l (HOA)
PlutoniuR 239, 21,0
PCI/l (HOA)
Americiun 21,1
PClIl
Qtr.
(HOA)
(HOA)
02-87 07/09/87 3 :S.7 !. 1.1, 5.6 .1,2 !. .81 0.8 - .01, ! .75 1.5
02-87 10/07/87 I, 1,.5 !. 0.5 Nil .01, ! .09 0.00 ! .20
02-87 10/08/87 I, I,-MI, !. 0.651, Nil 0.211 !. 0.071, 0.032 ! 0.01,6
02.87 02/10/88 1 3.5 !. 0.1, NI< O. n !. 0.12 0.0 ! 3.3
02-87 01,/07/88 2 3.5 !. 0.3 Nil 0.00 !. 0.01, 0.16 0.00 ! 0.16 0.1,3
02-87 07/13/88 3 1,.2 !. 0.5 NR 0.00 ! 0.01, 0.00 ! 0.08
02-87 10120/88 I, Data nut Vet receil/ed
02-87 11/11,/88 I, ...
1,7.87 11130/87 I, ...
i,7 - 87 11130/87 I, ...
i,7-87 02/IS/U8 1 ORY
i,7-87 01,/13/88 2 DRY
1,7-87 07/18/88 3 DRY
1,7-87 10/21/88 I, DRY
1,8-87 11/18/87 I,
1,8-87 11/18/87 I, ...
1,8-87 02/15/88 6.1 !. 1.2 Nil 0.00 ! 0.18 0.00 ! 0.12
NOles:
NI< = An.dVle 1101 . <:I'ul 1<:.1
-------
Groundwater Dissolved Radioch~mistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF TilE 881 IIILLSIDE
uell
NUliber'
Date
Sampled
Qtr.
Ces ilill H7
PCI/l
(HOA)
I r i t illQ
PC 1/ l
(HDA)
02.87 07/09/87 3 NR <5110
02-87 10/07/87 10 Nil <500
02-87 10/08/87 10 NR NR
02-87 02/10/88 I Nil <220
02-87 010/07/88 2 NR <200
02-87 07/13/88 3 NR 230 ~ 90
02-87 10/20/88 10 Oilta /lot yet received
02-87 11/11,/88 I, ...
47-87 \\130/87 I, ...
47-87 \\dO/87 I,
47-87 02/15/88 I OilY
47-87 01,/13/88 2 DRY
47-87 Q7/ 18/88 3 DRY
47-87 10/21/88 I, OilY
1,8-87 11/18/87 I,
1,8,87 11/18/87 I,
1,8-87 02/15/88 NR <210
Notes:
NR = Analyte not repurted
-------
Groundwater Dissol
Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF THE 881 HILLSIDE
~ell
Dale
Sa/llpled
aIr.
Nuuber
-
1.6-61 01./13/68 2
1.8-81 01118/88 1
1.8-81 10/21/88 4
55-81 11/30/81 4
55-81 11110181 I.
55-81 02/15/811 1
55-81 04/11/88 2
55-81 01113/88 .1
55-81 10/21/88 4
Gross AI~la
PCl/l
(HDA)
Gross Bela
PCI/l
...
DRY
DRY
DIH
DRY
ORY
ORY
(HUA)
uraniun 233, 234
PCI/l (HDA)
NOles:
HR = Analyle not rcported
... = Insult icient Si1uljJle for Rddiochclilistry Analyses
Uranhn 215
PCI/l
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIEN'f OF 'I'IIE 881 HILLSIDE
Lie II Date III
-------
Groundwater Dissolved Radiochemistry Results
for Regulated units at Rocky Flats Plant
ALLUVIAL WELLS DOWNGRADIENT OF 'rilE 881 IIILLSIDE
\Je II Dale C"Sll.1I 137 1 f II illli
Nuubcf Sampled OIL PCl/l (H()A) PCl/l (H()A)
_.._--------~------- - ---_._---- _._-
~I!-I!I U~/1 S/UU ~
~8-87 07/18/!J8 3 010
~8 87 10/21/81! " 010
~~ -I!I 1113U/U/ "
5~-87 11130/87 I, ...
~~ -1J7 021 15/1J1J 1 OkY
55 -87 01,/11188 2 OilY
55-87 07/1i/1!8 3 OilY
55-87 10/21/88 I, OkY
NUles:
1111 = AII,.IVI" /101 I ",,"'led
...... = Insut f iciclH S~jlllp'C flu
lI,hIIUlh.:IIII,,11 V A/ldlvses
1-:
-------
- l
PROPOSED
INTERIM MEASURES/INTERIM REMEDIAL
ACTION PLAN AND DECISION DOCUMENT
881 HILLSIDE AREA
(OPERABLE UNIT No.1)
RESPONSIVENESS SUMMARY
U.S. Department of Eners:y
Rocky Flats Plant
Golden, Colorado
-------
A.
OVERVIEW
The Department of Energy (DOE) is pursuing an Interim Measure/Interim Remedial
Action (1M/IRA) at the 881 Hillside Area (Operable Unit No. 1) at the Rocky Flats Plant
(RFP). This interim action is to be conducted to minimize the release of hazardous substances
from this Area that pose a potential long-term threat to the public health and environment.
The plan involves the collection of contaminated ground water, treatment by UV /hydrogen
peroxide oxidation and ion exchange, and surface discharge of treated water that meets or
exceed applicable water quality standards for parameters kno~n to be present in the ground
wa ter.
Complete information is presented in the document entitled "Final Interim
Measures/Interim Remedial Action Plan and Decision Document, 881 Hillside Area, Operable
Unit No. I", dated January, 1990 Information concerning the proposed Interim Remedial
Action was presented during a public meeting held from 6 to 10 p.m.. Thursday, November 9,
1989, at the Front Range Community College in Westminster, Colorado.
This Responsiveness Summary presents all comments rec::ived at the public meeting,
and DOE's response to those comments. Many of the comments were peripheral to the interim
action plan; however, there were a number of technical comments on the plan that DOE fe::ls
ha ve been addressed herein.
Two major issues that arose were the potential release of
plutonium contaminated dust during construction of the interim action, and the routing of
Woman Creek flow around Standley Lake, the drinking water supply for Westminster,
Thornton, and Northglenn (Woman Creek is the proposed drainage where the effluent is to be
discharged). The potential release of plutonium contaminated dust is addressed in the response
to comment 6. The discharge to Woman Creek is discussed in the response to comment 1. There
is mixed public opinion on routing of the flow around Standley Lake, and in many respects
the issue is not germane to the proposed interim action (see our response to comment I).
Relative to the comments received at the public meeting, the public is generally in favor of
the proposed interim action plan.
As with the issues mentioned above, there are at times several comments referring to
the same issue. To facilitate cross referencing, issues where there were multiple commc:nts are
presented below with the associated comment numbers.
rockwell \ 881ha \ruplum.maa
-------
ISSUE
COMMENTS REFERRING TO ISSUE
8, 12, 13, 15,22,26,27,28,30,40,61,
66, 72
Generation of plutonium contaminated dust
Rerouting of Woman Creek flow
I, 21, 77, 78
14, 20, 23
Lack of upgradient/background data
Quality assurance problems
UV /Peroxide performance
5, 9, 17
25, 69
~isrepresentation of surrounding land use
Poor repo~t organization
Potential for plutonium in ground water
11,35,62
33, 46, 47
Closure of interim action facilities
43, 53, 60, 63
30, 64
Water storage/treatment capacity
52, 56, 65
These sections of the Responsiveness Summary follow:
- Background on Community Involvement
- Summary of Comments Received during the Public Meetlog
- Remaining Conc::rns
. Attachment: Community Relations Work Plan
rock.en \ 881118 \rap8um.maa
-------
B.
BACKGROUND ON COMMUNITY INVOLVEMENT
The Communications Dcpartmcnt at Rocky FlatS is dcvcloping a Community Relations
-
Plan to actively involvc the public in the decision-making process as it relates to
environmental restoration activities. A work plan has been completed and forwarded to the
Environmental Protection Agency (EPA). the Colorado Department of Health (CD H). and the
public Cor review. The work plan speciCies timeliness and activitics planncd to complctc thc
Community Relations Plan. including plans Cor community interviews. Public qucstionnaircs
rclated to development of the plan have been distributed during Aublic meetings Cor additional
input.
In the meantime. efforts have been made to keep the public informed. and solicit public
opinion. on current environmental restoration efforts. including the 881 Hillside Area. Notices
were published in area newspapers announcing the availability of the public comment period
on thc Proposcd Interim Measurcs/Interim Rcmedial Action Plan and Decision Document Cor
the 881 Hillside Area.
The public comment period was extended to provide adequate
opportunity Cor public comment. A public presentation on the plan was madc during the
October meeting of the Rocky Flats Environmental Monitoring Council, while a second
meeting to hear public comment on the Proposed Interim Remedial Action Plan was conducted
Novcmber 9. 1989. at the Front Range Community College. Copies oC appropriate documents
are available Cor public review at the Rocky FlatS Public Reading Room. U.S. EPA. and CDH.
The Communications Department also is continuing other public information efforts
to ensure the public is kept informed oC environmental restoration activities and other issues
which relate to plant operations. A Speakers Bureau program sends speakers to civic groups
and educational organizations. while a public tour program allows the public to visit Rocky
Flats. Road tours of areas such as the 881 Hillside are common during public tours. as well
as other tours arranged Cor public officials. An Outreach Program also is in place where plant
officials will visit elected officials. the news mcdia, and business and civic organizations to
further discuss issues related to Rocky Flats and environmental restoration activities. The
Communications Department also rcceivcs numerous public inquiries which are answered
~~\gl~\~
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during telephone conversations, or by sending written informational materials to the requestor.
Errorts a150 are under way to expand the Public Reading Room to an offsite location
more easily accessible to the public, further ensuring public access to information about the
plant. The readinl room wi11 housc all pcrtincnt public documents about the plant and
ongoing cnvironmcntal restoration activities.
rockwe11\881ha \N8p8W11.1118a
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C.
RESPONSES TO COMMENTS RECEIVED DURING PUBLIC COMMENT PERIOD
\
On November 9, 1989. DOE held a public meeting to receive commentS on the 881
Hillside Area 1M/IRA. These comments are presented here in the order they were received at
the public meeting. If written commenu were also provided, they are presented here in lieu
of the transcription of the verbal comments made at the meeting. However, if verbal
comments requiring a DOE response were presented at the meeting that are not reflected in
the written cODUllents, they bave also been included here. Written comments were also
provided by the City of Thornton and EPA tbat were not verbally presented at the public
meeting. neir respective comments are at the end of tbis section. 'The comments have been
subdivided at points where the issue or subject changes, and the DOE response directly follows.
All comments have been numbered sequentially to allow cross-referencing of responses.
COMMENTOR:
George Hovorka, Mayor, City of Westminster
Commen.t 1
I'm appearing on behalf 0/ the City to comment on the Proposed Imerim Measuresllmerim
Remedial Action Plan and Decision Document/or the 88/ Hillside Area.
The City 0/ Westminster supports the concept and plan to take immediate action to imercept and
treat comaminated ground water at the 88/ Hillside area. Failure to take such action could lead
to the adverse impacts to the City's WaleT supply,. Standley Lake, which is located downstream of
the 88/ Hillside. Standley Lake supplies wateT to over /80.000 people in Westminster. ThoTn.ton and
Northglen.n. as well as irrigation wateT lor shareholders in the Farmers Reservoir and Irrigation
Company. Therefore. it is imperative that this work begin as soon as possible to protect the
downstream water users. Westminster submits the following commems on the proposed plan:
The proposed plan calls /0' the water to-be discharged to the south interceptor trench after it has
been treated. The water then/lows into Pond C-Z. which is periodically discharged to Woman Creek.
which flows imo Standley lake. The City of Westminster strongly opposes this aspect of the plan
in the absence 0/ an imerceptor canal around Standley Lake. E//luem generated at Rocky Flats
should IlOt be allowed to emer Standley Lake in order to protect public health. DOE's actions to
oppose the permanent adoption 0/ a water supply classification and associated standards for
Woman Creek would further weaken the protection 0/ Standley Lake. increasing the City's resistance
to this proposed discharge. .
DOE's opposition to the standards goes against DOE's "good neighbor" policy which they have
publicly stated. Westminster, Thormon and North glenn have been working with DOE on developing
plans /01' the imerceptoT canal. However. no definite solution has been developed. Such an
imerceptor canal would not only protect Standley Lake during com rolled discharges. but also during
accidentS and unknown releases.
ROllling all water from Rocky Flats around Standley Lake effectively solves DOE's credibility
problem with the general public. as the water can no longer impact the water supply. WithoUt the
imerceptor canal, however, the City must seek the most stringent protection available to maimain
its high quality water supply. Therefore. Westminster must oppose discharge to the south imerceptor
trench. Once an interceptor canal around Standley Lake is in place. the discharge as proposed
would be acceptable.
ReSDonse to Comment I
DOE recognizes and completely understands the concern of users of Standley Lake that
potentially contaminated water could be released from the Rocky Flats Plant and enter this
body of water used for drinking, agricultural, and recreational purposes. The issue goes
beyond whether the effluent from the interim action treatment system is discharged into
Woman Creek via Pond C-2. DOE is studying the issue and has met and will continue to meet
with the representatives of the neighboring cities, EPA and CDH to discuss the matter. We do
rockweJ1\881ha \I'8pIUIDoDIU
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note that there is public opposition to such a diversion canal (See comment 21). In the mean
time. the water in Pond C-2 will continue to be chemically analyzed before it is released to
assure that the concentrations of all chemical constituentS are below the applicable Colorado
Department of Health water quality standards set fOr the protection of public health and the
environment. This. monitoring is required by the Plant"s Nation~l Pollutant Discharge
Elimination System (NPDES) permit. .
Comment 2
. .
W~sIm;nsl6r lully supports 1M r6mDind6r 0/1116 pllUl and urg6S DOE 10 pursu impl6m~nlCllion 0/
lh~ pllUl Clggr~ss;v6Iy. QUSI;ons did t:zr;S6. how~'~r. during Ih6 r6,i6w 01lh6 plCln. MClny st6m Irom
ClIClCk 01 d6tt:zi1 in tM pllUl. For inslClnc6. th6r6 is no m6ntion 0/ how wide Ih~ Fr6nch drCl;n will b~
or WhClI will b6 don~ with lUIy ground wClter 6ncounter6d during Ih6 construction operCllion. There
Wt:lS Cliso not enough in/ormmion Cl'Clilt:zble 10 d~lermin6 iflh~ Fr6nch drClin Wt:lS localed far enough
downslream 10 cClplur~ Clll 0/ th~ possible COnlClminClled ground WCller. II would be helpful if
Weslminsler could re'View further plans t:lS th~y become a'VailClble. .
ReSDonse to Comment 2
We inadvertently omitted the width of the french drain. It will be two feet wide and is
located hydraulically downgradient of confirmed organically contaminated alluvial ground
water. The chemical data arc shown in Table 2.2 (upgradient of the fre,ncb drain) and Table
2.3 (downgradient of the french drain) of the plan ( also see discussion on page 2-29). The
treatment facility will be on-line to treat ground water collected during construction of the
french drain (see the schedule on page 3-2 of the plan). Detailed design plans can be provided
to the City of Westminster. .
rockweJ1\881h1\f8peulft .......
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COMMENTOR:
Joe Tempel, President, Rocky Flats Cleanup Commission
Comment 3
First 01 all, the public should be aware that this document describes the cleanup 01 only 12 o/the
J 66 poJiuted sites at Rocky Flau. These sites contain cancer-causing volatile organic compounds
and uranium tainted soils tluu have leached into the groundwater. These sites ha'Ve been given
priority lor cleanup because the volatile org!U'ic compounds ha'Ve percolated down to the
groundwater which enters Woman's Creek which drains into Standley Resenoir, the drinking water
supply lor the northern suburbs. To put this cleanup proposal in another perspective: it will cost
approximately $6 million to construct and operate compared to an estimate 01 $1 billion to cleanup
the entire plant site. Therelore, while the RFCC is very excited that cleanup is linally progressing,
this action is only the tip o/the iceberg,' or should we say the tip 0/ the trash pile.
ReSDonse to"Comment 3
We are aggressively putsuing the investigation and cleanup of the Rocky Flats Plant.
Investigations have been conducted at the 881 Hillside Area, the: 903 Pad, Mound and East
Trenches Areas, and at various units being cleaned up under the Resource Conservation and
Recovery Act. We are spending approximately S 6S million in fiscal year 1990 on
environmental restoration activities. Construction of the fin.&l remedy for the 881 Hillside
Area is scheduled to begin in 1994.
Comment 4
Tire public should also be aware that cleanup will take a very long time at the rate DOE is
progressing. The purpose 0/ the IRA is to begin cleanup on a temporary basis until a permanent
solmion can be agreed upon. Unfortunately, the temporary solution will not be operational until the
Spring 0/ 1991. about a year and a hal/away from now. This is not acceptable. Cleanup should
be accelerated at the plant.
ReSDonse to Comment 4
We understand how the time frame for design, procurement and construction appears lengthy,
However, given the size of the project, the 1.1/2 year time frame is not unreasonable. These
activities occur in sequence, and several months is required for the procurement of some
equipment once it is ordered from the vendor. However, we would like to point out that
tre:ument of contaminated ground water will begin by December 19, 1990. These dates are
reflected" in the schedule on page 3.2 of the plan.
Comme1lt 5
It is unclear when the permanent solution /01' these J 2 sites will be in place because no schedule has
been produced by DOE. This schedule is to be outlined in an Intergovernmental Agreement (lAG)
which was due in October. In fact the permanent solution has been under study since 1987 when
work began on the Remedial Investigation/ Feasibility Study 881 Hillside. These reportS have still
"ot been completed because 0/ the inadequacies in the draft reportS. The following inadequacies
were idemi/ied by the DOE Special Assignment Environmental Team in their Report entitled
.. Assessment 01 the Environmental Conditions at the Rocky Flats Plant", dated August /989:
There is inadequate background characterization /01' metals and
radionuclides primarily because there was only one background well
drilled upgradient o/the site to determine what contamination is
being generated on-site versus o/I-site.
There is a poorly defined extent 0/ contamination because 0/ the
few number 0/ test wells (JJ).
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There is inadeqlilte qlillity control o/testing so the daltl may not
be valid.
There/ore, DOE admits that their past studies have been flawed and that a permanent solution
cannot be defined until one completely understands the problem. The RFCC requestS that these
inadeqlUlCies be co,.,.ected as soon as possible so that a /ilUll cleanup soltltion can be implemented.
Re!DOn!e to Comment!
The permanent remedy Cor the 881 HiUside Area is scheduled to begin in 1995. The Phase II
remedial investigation (RI) did not resolve. aU outstanding issues regarding soil and ground
water contamination at the 881 HiUside Area. The deficiencies cited above were largely a
result of unrealistic schedules for the performance of Rls and feasibility studies (FSs), which
was also noted by the Special Assignment Environmental Team. Comprehensive plans for
completing the RI/FS wiU be submitted to EPA in February 1990 in accordance with the draft
Inter-agency Agreement (lAG), The draft lAG schedule calls for the final remedial
investigation /feasibility study to be completed in 1992.
Comment 6
While the IRA proposes to construct a french drain to collect the pollutants which are leaching into
the groundwater, nothing is being proposed to cleanup the contaminated soils. The RFCC is
concerned that the citizens and workers downwind o/the construction o/the drain may be
contaminated by the radioactive dust disturbed on the sur lace 01 the ground. The RFCC wants to
review a Health and Salety Plan which describes how the workers and community will be protected
during construction. The RFCC does not want the cleanup to create additional health risks to the
workers and the community like that which was experienced at the Rocky Mountain Arsenal. The
RFCC also wantS adequate monitoring to be in place during construction so that environmental
standards are not exceeded:
ResDonse to Comment 6
The nature, magnitude, and extent of contaminated soils is still under investigation; however,
it is recognized that plutonium is above background in surface soils at the 881 Hillside Area.
Surface soils samples have yielded plutonium concentrations no greater than 5 pCi/gm, with
the average level being 1.63 pCi/gm. Higher levels of plutonium are not expected to be
encountered because samples did not show measurable concentrations of plutonium below the
ground surface. Also, elevated levels of uranium have been identified in surface soils in four
small discrete locations « 10 sq. ft. each) with measured levels as high as 3,072 pCi/gm (draft
Environmental Assessment Cor 881 Hillside (High Priority Sites) Interim Remedial Action,
November 30, 1989).
A Rockwell Job SaCety Analysis (JSA) will be prepared be Core construction that will specify
dust control measures to limit dust inhalation exposures. (The JSA is a process developed
from the Rocky Flats Health and Safety policy. The JSA addresses health and safety
protection of outside contractors). These measures include the premoistening of the
excavation area with a sprinkler system for three days prior to start-up, and the continued
moistening of the site throughout the excavation. Ambient air high volume air samplers will
be used to measure radiation and wind velocity. These will be installed before commencement
of construction. Operations will be suspended by requirements in the Occupational Safety
Analysis (OSA) if wind velocity exceeds 15 mph or alpha radiation exceeds 0.03 pCi/m3 as
measured by a high volume sampler located immediately downgradient of the construction
activities. (The OSA addresses health and safety concerns originating from routine site
operations, and is similar to the JSA.) A Health and Safety Plan will also be prepared for
construction activities that will supplement the JSA.
Notwithstanding health and safety controls, an analysis has been made of the potential public
exposure from inhalation of dust contaminated with plutonium and uranium, and the
rockwe1l\881h8\NlPlWD.1DU
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committed errective dose equivalent (CEDE) from such intake. Conservatively assuming the
mount of dust resuspended remains less than 10 mglmS (the OSHA regulatory limit on
nuisance dust in the work environment). the wind velocity is 3 m/sec. and exp-osure Occurs at
the closest property boundary. the CEDE calculated for uranium is 5 x 10.6 Rem. and for
plutonium is 8 x 10'" Rem. These totals may be compared to the DOE radiation protection
standard for the public of I x 10.1 Rem per year. As can be seen. the public exposure to
plutonium and uranium is insig~iCicant relative to the DOE radiation protection standard for
the public (Environmental Assessment for 881 Hillside. November 30. 1989).
Even though the health risk from inhalation of plutonium contaminated dust is low at the 881
Hillside, DOE respectS the concerns of the public and intends to investigate several options for
control of plutonium contaminated dust for use at other more contaminated sites. These
options include a vacuum extraction system for removing the uppermost layer of loose soil
before construction commences, addition of cement type additives to bind the surface soils
and minimize the release of plutonium contaminated dust, and a mobile enclosure with a
ventilation/filtering system to remove plutonium dust before it is released to the atmosphere.
At all sites. where plutonium contaminated soils exist, including the 881 Hillside Area.
construction traffic will be carefully routed to further minimize release of any plutonium
contaminated dUSL .
-; r-f-)L... .
"2- 1- ~L.
,
Comm~nt 7
Final/y. the RFCC wants to see a Community Involvement Plan which outlines how the community
will be informed o/the progress o/the cleanup and given assurance that environmental standards
are being 1Mt.
Resconse to Commenr 7
The attachment to this Responsiveness Summary is the Community Relations Work Plan.
Implementation of the Community Relations Plan (CRP) will provide the public with
accurate. timely. and understandable information. and steps the public can take to participate
in decisions regarding cleanup activities at the 881 Hillside Area and the entire Rocky Flats
Plant Site. The community relations program will allow the public the opportunity to learn
about the Site. the Superfund program. and to provide input on technical decisions during the
investigations and studies prior to remediation. The program will also keep the public
continuously informed of on-going cleanup activities. including the interim action :It the 881
Hillside Area. The Work Plan (see Attachment) provides a schedule for the activities and
public involvement that lead to finalizing a Community Relations Plan.
rock..U\881h8 \l'8Ip8UIIUIIU
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COMMENTOR:
Gregory'K. Marsh, Treasurer, Rocky Flats Cleanup Commission
Comment a
A.lthough plutonium deposition on the area surrounding the RFP as a result of 'the 1957 and 1969
fires and other events is not well understood. the fact remmns the Natio1Ulllnstitute of Standards
and Technology (forlMrly the NaliontU BUTeau of StGndards) chose the soil from the RFP, in July.
1978. to ~ tJ plutonirurr in soil sttJndtJTd. (De,eloDment 01 some natural matrix standards -
DrOltren reDO,t. Emironment Intenuuio1Ull. Yol. J. pp J95-J98. Pergamon, Press 1980. Published in
Greal Sritain.) SpecifictJIly, the stGndtJTd. SRM 4J5J. was mtlIJe from a IJ em deep sample tllken
along the east periIMter fence just north of the southeast corner of the RFP. To make this
sttJndtJTd, 600 kg of this soil was "diluted" with JOO kg of soiltllken from' near the western fence
to get the plutonium concentration down to a le,el of aboUl ten (10) times average, world-wide
-bllekground" levels. (From a conversation with Robin Hutchinson, NIST, Gaithersburg, MD. on 12
July, 1989.) This stGndard reference maleritJI is now being used by the scientific community
around the wo,ld to calibrGte their instruments. '
Given this fact, how CGn the surface of 881 Hillside where the french drain is proposed. which is
2.9 kms west of the pillee from where the soil stGndard was taken, b( free of sur face plutonium
contaminGtion?
ReSDonse to Comment 8
As stated in response to comment 6, it is recognized that plutonium concentrations in surface
soils at the 881 Hillside Area are above background and appropriate measures will be taken
to minimize any release of plutonium contaminated dust during construction. The Rocky
Flats Plant Annual Environmental Report, a public document which provides a summary of
the environmental monitoring conducted at the Plant, indicates elevated plutonium levels exist
in the surface soils to the east within the Plant boundaries. The data show that the soils may
contain up to 10 -100 times background lcvels of plutonium. However. these levels arc typical
of those observed at the 881 Hillside Area where the exposure due to dust inhalation has been
shown to be minor (see our response to comment 6 for estimated exposures).
Comment 9
Alter an in-depth discussion with Mr. Tom Greengard of the methods used to determine what.
where, and why to drill the monitoring wells that are used to assess the 881 Hillside it seems that
no industry accepted protocol was lollowed. What is the statistical validity 01 the methods used?
II the methods used are invalid and hence a wrong assessment made. was this a cover.up to conceal
more important and dangerous conditions elsewhere?
ReSDonse to Comment 9
It seems there may have been a misunderstanding concerning thc discussion with Mr.
Grecngard. EPA accepted protocols wcre followcd to locate the monitoring wells at the 881
Hillside Area and include interpretation of existing ground water chemistry data. soil gas
mcasurements, geophysics, and most importantly, mapping of disposal sites based on historical
aerial photographs. Statistical methods were not needed to locate monitoring wclls because of
the information gained from use of these methods was more than adequate. There was and
is no cover-up to conceal more dangerous conditions elsewhere.
rock..u\8I1ha\I'8p8"~ ...-
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COMMENTOR:
Kim R. Grice, Rocky Flats Cleanup Commission
Comment /0
DOE and its contractors at Rocky Flats have not been very nice neighbors! They have polluted the
groundwat8r and soil at their facility to the extent that reIMdial action is necessary to protect the
public from added health risks. The public desenes to be inforlMd that this is !lfll. a cleanup
operation of hazlUdolU waste: it is only an interim soilltion to keep the contamination at these sites
from spreading.
ResDonseto Comment 10
The proposed action at the 881 Hillside Area is both an initial cleanup of hazardous waste
from past disposal practices and an interim solution to mitigate contamination migration. The
interim action will be consistent with the final remedial action ror the 881 Hillside Area. It
is anticipated this interim action will be a major component of the final remedial action.
Comment N
, The IRA. mentioned that RFP is located in a rural arta where there was no schools. no hospitals.
and no parks within 5 miles of the RFP site. This comment is grossly in error! The facts are that
there exists 20 schools. a hospital called .A.vista. in Louisville. JJ child care centers. and over /4
parks and public open space areas within 5 miles from the boundary of Rocky Flats. The map
shown in figure 2-/ is not an updated map. It also blocks out major development areas east 01
RF P. and Broomlield is omitted completely. It is recommended that a detailed map showing
urrent development. schools. hospital$. parks. etc.. within a 10 mile radius 01 the RFP boundary be
incorporated into this IRA.. The population census in this report uses outdated /980 data. when with
a little elfort current popula.tion ligures cpuld easily be obtained from county and city records.
ResDonse to Comment 11
This section of the IRA has been updated to reflect more current information. The final
interim remedial action plan that reflects these changes is now available for review in the
Rocky Flats Public Reading Room. There was no ,intent to misrepresent land use in the
general vicinity. The oversight was a result of the considerable attention given to the
selection of the appropriate interim action given the chemical conditions at the 881 Hillside
Area.
Comment /2
There is very little mention in this IRA. regarding soil characterization. There is much concern that
this remediation project will disturb soils contaminated with varying levels 01 plutonium and other
radionuclides (see HUD's RF Advisory Notice attached). The resuspension 01 respirable size dust
containing radioactive elementS could have direct health impacts on citizens residing and working
downwind when these particulates are inhaled or ingested. A.s noted in attached chart. there has
been an escalation 01 airborne contamination during past soil excavations at RFP. The excavation
requires 2/00 feet 01 French Drain and 1320 leet of Slurry Walls that are 4-20 leet deep.
Excavation also includes over 2500 leet 01 eflluent piping trenches and the excavation and
encapsulating 86.000 square leet 01 contaminated soil. We are not inlormed 01 the total amount 01
soil (cubic yards) that will be e,xcavated at these sites. Much 01 the proposed remedial area
contains large quantities 01 plutonium contamination, 01 the soil (see attached Krey and Hardy
ap). A. complete chemical and radionuclide soil characterization lor specilic construction sites
~s not been perlormed and included in this IRA.. why? Will the propos~d sites be tested lor total
amount 01 respirable size particulates to determine the amount of airborne dust that could be
resuspended during construction? How many cubic yards 01 soil will be removed Irom the
borrowed site south 01 Woman Creek: and what will be its characterization? What salety
precautions are planned lor the workers? . What will be the health risks to the public during the
rockweJJ\881ha \I'8Ip8U111.IDU
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remedial actions? It is recommended that a closed environmental chamber be used to conduct any
excavation within. in order to limit and /ilter resuspended contaminates be/ore release to the
outside environlMnt.
Resoonse to Comment 12
There appears to be some misunderstanding of activities associated with the proposed interim
remedial action. and activities associated with the other alternatives that were evaluated.
The slurry walls and borrow site south of Woman Creek refer to the second alternative, which
is not the preferred and proposed interim remedial action. ..
DOE very much appreciates your concern for generation of respirable size particulates during
construction that may be contaminated with plutonium. However, in order to allay your
concern, we note that the plutonium contamination is at the surface and therefore the total
volume of material excavated should not matter to the generation of respirable size
particulates.possibly contaminated with plutonium. The french drain and piping are located
such that encountering soils contaminated with organics is unlikely. Chemical testing will be
conducted on these soils prior to excavation to assess whether organic. contaminants or
radionuclides arc present, so that the appropriate health and safety measures, as well as
storage and final disposition of excavated soils can be determined: Our response to comment
6 addresses the potential public exposure to plutonium contaminated dust, and th~ health and
safety measures that will be taken to further minimize these risk. The use of a closcd
cnvironmental chamber cannot be justified at this time; however, it is being carcfully studied
as an option to minimize gcncration of plutonium contaminated dust at more contaminatcd
si tes.
Comment J J
The IRA. needs 10 include a comprehensive sile specific ambient air monitoring plan.
Meteorological data pertinent. to these sites-is needed to determine direction and distance. etc.. that
Ihis respirable dust might travel. A.ccording to a 1987 Meteorological Tracer Study published in
September 1988 by Rockwell. the distribution 0/ emission plumes can be dynamic. The report
mentions that during Ihe 12 day study. tracer elements traveled west to the Continental Divide and
as far east as 45 miles from the release site located near the 90J Pad. It was interesting to nOle
that during the tests. the plume was in contact with the ground. Sector -2 which is southeast o/the
RFP. according to the Colorado Department 0/ Health. continually reportS the highest levels lor
plutonium in soils (see CDH map and chart attached).
Resoonse to Commcnt 13
You are quite correct that meteorological data is necessary for these sites in order to design
and implement a sound air monitoring program. DOE fully intends to conduct a
comprehensive air monitoring program as part of the health and safety monitoring during
construction. All pertinent meteorological data will be incorporated into thc plan for this air
monitoring program. Pleasc see response to commcnt 6 for more details.
Comment J4
De/iciency in characterizing extent 0/ soil and groundwater contamination:
Vertical/horizontal pro/ile (J dimensional) 0/ extent 0/ the
groundwater plume should be characterized and included.
There are no wells north 0/ the SWMUs.
Existing soil data does not characterize adequately the current statlls
o/the contaminated area.
l'ocJnreU\881ba \rwJI8WIUIIU
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ResDon.se to Comment 14
he response to comment S discusses the shortcomings of the previous remedial investigation
nd the plans for correcting past deficiencies. Wells will be installed north of the Area to
assess any impacu to ground water arising from other upgradient SWMUs on the plant site.
These wells. and other wells and soil borings are being proposed in the Phase III Remedial
Investigation/Feasibility Study Plan to be submitted to the regulatory agencies in February
1990. The data discussed in the interim remedial action plan is of adequate quality (data have
been validated and found to be valid or acceptable with qualifications). and provides
suCCicient detail oC the ground-water contamination in surficial materials to justify and
deCine the scope oC the proposed interim remedial actioL
.
Comment 15
Radioaclive ambient ail' moniloring program is deficienl.
Ambienl ail' moniloring should analyze for uranium and americium
as well as plulonium.
Design and inslall new samplers to limil pal'liculale losses wilhin
the samplers.
Incorporate flow conlrol syslems lhal will mainlain a constanl air
flow rale over sampling period.
Expedile an ail' dispersion sludy to verify and design new ambienl
ail' moniloring sampling network.
p-CSDonse to Comment 15
An extensive air monitoring network known as the Radioactive Ambient Air Monitoring
Program (RAAMP) is maintained at the Plant in order to monitor particulate emissions from
Plant facilities and soils. The RAAMP has found ambient air samples for plutonium to be
well within the DOE guidelines of 20.0 x 10-15 ~Ci/ml established for the protection of human
health. Americium and uranium are not presently measured because air emissions are
expected to be less, and their maximum allowable concentration in air in an unrestricted area
is 10 and 100 times greater than plutonium, respectively (Standards for Protection Against
Radiation, 10 CFR 20, Appendix B, Table 2).
To further assess emissions of radionuclides and other toxic compounds from the facility,
DOE has agreed to improve air quality monitoring at the Rocky Flats Plant (Agreement in
Principle with CDH). Air quality monitoring provisions of this Agreement include:
- The DOE will submit a comprehensive air emissions inventory for CDH review.
- The DOE will provide a comprehensive materials balance of VQCs for CDH review.
- The DOE will identify all toxic and radioactive emissions coming from the facility
(stacks, vents, ponds, e.tc.) and will support CDH in the use of an accepted emissions
model to predict any areas of off-site impact.
- DOE will conduct promptly the stack testing necessary to verify the amount and type
of emissions. .
- The DOE will install continuous emission monitors in all appropriate sources to
ensure continuous compliance with air pollution requirements.
- CDH will prepare a comprehensive review, in cooperation with EPA and local
governments, of the air monitoring system and will implement needed improvements
to the air quality monitoring network.
rockw.u\881h8 \nep81U1U11aa
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- CDH will deploy VOC ambient monitors ocr-site, as ne~essary.
Comment /6
Groundwater data and sampling.
,4Mlytic data produced lor the 881 site should be organized in a manner 101 easy
relerence and rapid e.,aJlUUion by WilY 01 datllbase systems that permit selection and
JOrtinl 01 sneraJ /HIf'IIIMters.
Silmpling procedures to lully docuIMnt chllin 01 custody.
Sampling teilm should be provided 10rm4l tTllining in the use 01 methods. etc.
ReSDonse to Comment 16
A computerized environmental data base is maintained in a database format and is called the
Analytical Data Management System. With respect to the sampling procedures and training,
the ER Program Standard Operating Procedures (SOPs) and Quality Assurance/Quality
Control (QA/QC) Plan have been revised and provided to the field personnel. Both classroom
and on-the-job training is provided for field personnel. Data validation and audit programs
have also been put into place. CDH and EPA have reviewed many of these procedures and
will continue to review future plans during cleanup.
Comment 17
Quality assurance
A comprehensive quality assurance contTol program is r.ecommended
to adequately document the validity and analytical data lor 881
Hillside remedial actions and assessments.
ReSDonse to Comment 17
Quality assurance has suffered in the past with respect to environmental restoration activities.
This has been largely due to the aggressive schedules for completing RCRA and CERCLA
activities which precluded a thorough quality assurance review of data and deliverables. In
effect, a quality assurance program commensurate with the volume of work being performed
was missing. A comprehensive QA/QC Program is now currently in place. QA procedures
adhere to the Environmental Restoration QA Program Plan and the QA/QC project plans.
Chemical analyses arc performed in accordance with the EPA Contract Laboratory Program
and the QAfQC Plan, and data validation is performed by a qualified independent
subcontractor.
Comment /8
Community relations
-'
There is a lack 01 a linalized and implemented community relations
plan lor the 881 Hillside Remedial Corrective Action Program.
&"DCkweU\881ba\rapeul" --
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ReSDonse to Comment] 8
Tru~ but preparation oC a Community Relations Plan including community surveys is in
progress. Please see Section B and the attachment to this Responsiveness Summary which
contain a summary oC community relations activities and the Community Relations Work Plan,
respectively. .
Comml!nt 19
.I
Accordin, to tM 1981 A",,1IIll Emiron",.ntiU Monitorin, R~PDrt. Jl'OCs a;~ d~t~ct~d in th~ b~drDCk
growuJ wllt~r below 1M 90J Pad in W~lls 1281. 1181 iUId 1481.
WIuu ~ff~cIs will tMY have on th~ r~medilltion III 88J?
I'
ReSDonse to. Comment 19
The interim action addresses shadow (alluvial) ground water contamination. Therefore
possible bedrock ground water contamination will not influence the interim action. Future
investigations at both the 881 Hillside Area and 903 Pad, Mound; and East Trenches Areas
will characterize the nature and extent oC bedrock ground-water contamination. If
contaminated bedrock ground water in wells 12-87, 11-78, and 14-87 is deiermined to arise
from the 881 Hillside Area, then remediation of this bedrock ground water will become a part
of the final remedy for that Area.
Comml!nt 20
hy was Well 5586 chosen as a background well?
. .
ReSDonse to Comment 20
Well 55-86 was the only alluvial well upgradient of all historical waste disposal sites that was
in existence at the time of the remedial investigation of the 88] Hillside Area. DOE
recognizes this is far from adequate to characterize background ground water, and therefore
3 comprehensive background hydrogeochemical characterization program has now been
implemented at the Rocky Flats Plant. Fifty wells have been installed and sampled. and over
100 soil samples coUected to characterize background ground water and soils in 1989.
Background stream sediments and surface water have also been characterized. A draft report
was issued on December 1 S. 1989 (Background Geochemical Characterization Report). The
background characterization program is on-going.
Comment 2 J
They Mayor of Westminster said he would accept said diversion canal to channel effluent from
Pond C-l around Standley Lake. I would like to inform everyone as a citizen of Westminster that
said Rocky FlatS effluentS then would no longer be diverted by Standley Lake. but would flow near
many residential areas down Big Dry Creek. This is not an acceptable solution to me.
ReSDonse to Comment 21
OE recognizes your concern on this very controversial issue. Please refer to our response to
mment 1.
Comment 22
rockweU\881ha \1'8JIIWIUII8&
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While it mtlkes sense to attempt to confine the spread of groundwater contamination in. order to
reduce added health risks imposed on the public. we should also be concerned about the daily
emissions of radioto%ic waste from over $0 vents at this facility. and the subsequent
in!ralation/ingestion of these carcinogens by our family and friends.
ReSDonse to Comment 22
DOE appreciates your conccrn about thesc emissions. As discusscd in our responsc to commcnt
U. thc RAAMP isjmplcmented in ordcr to monitor plutonium emissions from thc facility, and
additional more comprehensivc monitoring will be undertakcn pursuant to thc Agrecment in
Principle.
"
.'
"\
-
rockwe11\8I1h8\,.pe1lllUDU
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COMMENTOR:
Paula Elofson-Gardinc. Dircctor. Conccrncd Hcalth Tcchnicians for a
Clcancr Colorado. Sccrctary, Rocky Flats Clcanup Commission
Comm~nt 21
TM luk of upgrtlliient wells indictUes deficiency regtUding -bukground- levels of contlzminants
versus those found in 1Iliuvilli mellSlU'ements and growuJwtUer wells in tM tUeG known lIS the 881
Hillside.
.
ReSDonse to Comment 23
,
Your arc quite correct in pointing out this deficiency. As discussed in our response to
comment 14. an up gradient wcll will be installcd in order to define up gradient chemical
conditions and allow determination of ground-water contamination originating only from the
881 Hillside Area. Furthermore. a comprehensive background hydrogeochemical background
characterization program is now in place as discusscd in our responsc to commcnt 20.
Regardless of background concentratioDS. thc ground-water treatment system proposed as part
of thc 1M/IRA will remove organic and inorganic chemical constituents to levels that arc
belo.w the applicablc CDH water quality standards for the protection of public health and the
environment.
Comm~nt 24
There is serious deficiency regarding lack of chemiclll and rtlliionuclide direct soil analysis both
on and oIl-site lor the determination 01 spretlli 01 contGminGnts origintUing Irom the Rocky Flats
lant.
ReSDonse to Comment 24 .
Considerable data exist today regarding on-site and oU-site contamination. This data has
been collected as part of remedial investigations. and Rockwell's Health. Safety, and
Environment Department's environmental monitoring. This latter data is published in the
Annual Environmental Monitoring Report. As you may be aware, DOE has recently signed
a draft Interagency Agreement with the EPA and the CDH for investigation and clcanup of
the Rocky Flats Plant. To supplement the existing data, a number of plans will bc prepared
in 1990 pursuant to that agreement that will servc to guide the invcstigations of the nature
and extent of cOlltamination at the Rocky Flats Plant. The draft Agreement has been released
for public review and comment.
Comment 15
Sources 01 contGminants are !.l!ZL identified. so thGt an eventual permanent solution could be
initiGted. As an interim measure. the peroxide/UV application for destruction of VOCs is
controversiGI. and hIlS not been -proven- for remediations of this size. The bene/it of this
technology is questionable in terms of the volume it is capGble 01 hGndling. .
ReSDonse to Comment 25
You are correct to point out that sources of contaminants have not been adequately identified.
Further source characterization is a specific objective of the upcoming Phase III Remedial
nvescigation of the 881 Hillside Area. With regard to UV /Peroxide. DOE is confident that
e system will perform ta the expectations inherent in the interim action plan. As described
on pages 4-13 through 4-17, it is clear that UV/peroxide is a proven technology at the design
flow rate. Also, UV /Peroxide systems arc now in use at the DOE Lawrence Livermore facility
in California, and 10cal1y, at the Boulder Syntex facility and Rocky Mountain Arsenal.
Furthermore. the vendor of the equipment has guaranteed it's performance in meeting the
rocJnreU\881b8\r8pt'"- -....
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effluent standards given the expected influent characteristics. If during startup of the
UV /Peroxide system the unit does not perform to specification. a carbon system may be
installed as a final .polishing. unit to assure compliance with effluent standards. A carbon
system can be installed readily and would remain in operation as long as needed.
Comm~nt 26
In comparing thl! Sill! diagrams 0/ thl! ProDo~~d Interim Mell~ure~ / IRA Pla.n and Det:ision
DOt!um~nt -lor the 881 Hillside Ilr~ll. tM 90J Pad. Mound. and Ellst Trenches Remedi~l
In.,~stif1ation. and tM Rocky Flats Plant sitt! map in tM Assessment of Environmental Conditions
at the Rockv F/Ilu P/Ilnt rt!port. it apfJt!ars that thl! art!a blocud oUljor 881 rt!mt!diation t!ncroach~s
in part on thl! 903 Pad art!D. 1/ this is so. how willtht! public b~ prott!cted during the remediation
prOCt!ss jrom tht! radionuclidt!s libl!rated jrom this proct!ss? ResusDension is a Drob/em.
..
ReSDonse to Comment 26
The 881 Hillside Area and 903 Pad Area due indeed overlap. Your review of this information
has been thorough. However. the plutonium concentration data fQr surficial soils in this area
of overlap do not pose a threat to the public from dust resuspension during construction.
Please refer to our response to comment 6 regarding potential public exposure to plutonium
contaminated dust. and techniques for minimization of such dust during construction of the
881 Hillside Area interim remedial action.
Comment 27
Migration jromthe 903 area to the 881 area is not addressed as a possible source oj contaminants.
The 885 building is adjacent to the 881 area as well. Where do the discharges Irom this building
drain to? A chart detailing groundwater migration and the plant piping system and drains would
assist in determining sources and potentiizl toxicity.
ReSDonse to Comment 27
The only contamination arising from the 903 Pad that would influence contamination at the
881 Hitlside is resuspension of plutonium contaminated soils. This will be referenced in the
final 1M/IRA Plan. Potential public exposure to plutonium contaminated dust and health and
safety measures to be used during construction that minimize this exposure are discussed in
our response to comment 6. Building 885 is a RCRA storage facility from which there are no
discharges. The building and surrounding soils will be investigated and closed in accordance
with the State of Colorado hazardous waste regulations. Ground water flow in surficial
materials is to the south/southeast at the 881 Hillside Area. The proposed french drain has
been located to the south/southeast downstream of all known organically contaminated ground
water in surficial materials. and is designed to intercept this ground water to prevent it from
entering into the ground water of the valley fill alluvium in the Woman Creek drainage.
Comment 28
No mention is made regarding protection oj the community during remediation activities.
Historically. monitoring 01 this are has shown elevated readings 01 radionuclide activity during
these types oj activities (eg: barrel removal). Please see report # RFP-3914. Dust TransDort-Wind
and Mechanical ResusDension. We would suggest a containment structure such as temporary
buildings and/or domes be used to contain contaminants that are disturbed during cleanup phases
01 note such as drilling. earthmoving and the like.
rockw.U\881ha\~~III" ....,
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ReSDonse to Comment 28
Please see our response to comment 6 which we are hopeful will alleviate your concern on
this matter.
Comment 29
There is a lack 01 dispersion modeling lor migration 01 plumes 01 contamination that would also
assist in the identification 01 source points 01 many 01 the contaminants in question.
.
ResDonse to Comment 29
There is insufficient data to use a dispersion model to determine the sources of contaminant
plumes at the 881 Hillside. The hydrogeology at the 881 Hillside Area is relatively complex
and not adequately defined for use of a ground water model. .Furthermore, it is unlikely a
ground water model will provide information that cannot be ascertained through
interpretation of ground water surface elevation maps together with contaminant contour
maps.
Comment 30
I have a couple 01 comments submitted to me by Neils Schoenbeck that I would like to submit with
mine. They have a question as to existing data about the integrity 01 the impermeable membrane
in the Irench drain lor the period 01 20 years. What is the known liletime 01 that membrane?
What plans exist for the disposal of the material of the french drain Itself when the cleanup is
completed? I think there is a great deal of concern about the proximity 01 the 903 Pad in light of
the res us pension and windblown resuspension reports from the reposllory. that the problems with
the resuspension in this area are not being addressed that already exist in that area. sands
remediation.
ReSDonse to Comment 30
Synthetic membranes have been in use at waste disposal sites for over 20 years, many of which
ha ve not shown leakage. EP A guidance suggest the expected life of a synthetic membrane is
no longer than 30 years. If repairs are required to the french drain during the course of the
interim action, they will be undertaken immediately. This will be outlined in the Operation
and Maintenance manual. If necessary. the french drain will be completely rebuilt, if liner
leakage is frequent. When remediation is complete, the french drain will be removed and
disposed in accordance with all regulatory requirements. The treatment facility may be used
for other ground water treatment purposes, or decommissioned in accordance with RCRA
closure regulations and DOE Orders when it has no further utility. Please see our response to
comment 6 addresses resuspension of plutonium contaminated dust.
rockw.u\881ha \~P8um.maa
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COMMENTOR:
W.A. Kemper, Rocky Flats Cleanup Commission
Comment 31
This plan is. as its title states, only an interim remedial action. not a cleanup. But is a first step
and accordingly, I believe it should be supported unless seriously flawed. I found it somewhat
difficult to read and possibly containing some smaJ/ technical errors easily correctable. but nothing
that would cause it to be rejected.
ResDonse to Comment 31
The interim action is a cleanup because contaminated ground water will be removed from the
Area and treated. We recognize there arc some small technical errors in the plan, and do
appreciate your support of this action. This interim action is a significant step in the
remedia tion of the 881 Hillside Area. The technical errors in the report will be corrected, and
a final plan will be available for your review.
.
..,
Comment 32
There is some question whether 881 Hi//side should have been chosen for the initial remedial action.
Perhaps it is the area of greatest immediate concern. but it does appear that the danger from 881
Hi//side is principa//y from volatile organic compounds (VOCs) whereas the public's greatest
concern is with radionuclides. But the public should be aware the VOCs are also toxic and can
cause problems such as attributed to Martin Marietta. The cost of implementing this interim
remedial action wi// be about $4.6 mi//ion. It wi// affect the removal of about 80 Ib VOCs. 5 lb
selenium. and 0.1 x 10::.l. curie of radionuclides and other substances of lesser concern per year.
Jlore important, it should assure that seepage and drainage from 881 Hi//side wi// present.
aosolUlel.v no risk to the drinking water supply.
ResDonse to Comment 32
The 881 Hillside Area was chosen for initial investigation and cleanup because of the high
concentr:ltions of organic contaminants in the ground water, many of which are carcinogenic,
Jnd the proximity of the contamination to a major drainage that leads to Standley Lake. DOE
is Jware that the public's general perception is that highly radioactive contaminated sites and
off-site Jreas are of nigher interest and concern. However, in dealing with the 881 Hillside
first. DOE is implementing a policy of contaminant source control in an area where there is
the greatest potential future risk to the public.
Comment 33
The report would be easier to read had it been organized differently and a table of acronyms
been included. For example. it is to readily ciear .alternatives. whether measures being discussed
are for water treatment or for containment and co//ection. nor which measures are recommended
of those being considered. The final proposed system is shown in Figure 6-1.
RcsDonse to Comment 33
The organization of the document generally follows EPA guidance for the preparation of an
Engineering Evaluation/Cost Analysis (EE/CA) as defined in the proposed National
Contingency Plan. We agree, the organization could be improved but it was mutually agreed
with EPA that the EE/CA guidance would be followed. The revised plan will contain a table
of acronyms. Consideration will be given for a different organization in future reports.
rock...U \881ha \r'8IP8WD-maA
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Comment 34
he site numbers. p. 2-3. do not correspond to the numbers on Figure 2-2.
ResDonse to Comment 34
We have reviewed the site numbers and the numbers on the figure and have noted that SWMU
177 is not located on the map. SWMU 177 was not shown on the map because it will be closed
under the State of Colorado hazardous waste regulations and therefore is not incJuded in this
interim action. Please excuse this confusion. The finaJ plan will note the location of SWMU
177.
0'
Comment 35
The "description of surrounding land use and population density" minimizes the area at risk. Are
there not schools and hospitals closer than 6 and 10 miles from the plant and ranches closer than
10 miles? I'd say they are right adjacent. (Ranch and farm areas) Several new housing
subdivisions are within a few miles of the buffer zone. See Figure 2-3. A 5 mile radius takes in
all of Broomfield. most of Westminster and parr of Arvada.
ResDonse to Comment 35
Please see our response to comment 11 which addresses your concern. This section of the plan
will be updated in the final interim remedial action plan.
~omment 36
It may be noted that all the VOCs above tolerated concentrations (ARAR) are chlorinated
hydrocarbons. Are there no other appreciable amounts of non-volatile organic compounds; dioxins.
PCBs or other? Of the metals. only selenium seems to be of appreciable concern. except of course
the radionuc/ides. More needs be known about these. How much is natural uranium? How much
is background? And. how much cesium and other fission products exist. if any? I f any fission
products are detected. I would not expect that they were from world wide fallout.
ReSDonse to Comment 36
No other Hazardous Substance List or Target Compound List non-volatile organic compounds
:He present in appreciable amounts. Selenium is of greatest concern, although manganese and
to a lesser extent nickel are also of concern. Uranium is the onJy radionuclide of concern at
the 881 Hillside Area ground water. Depleted uranium which is used at Rocky Flats has a
U234/U238 activity ratio less than one whereas narural uranium has a ratio greater than one.
The activity ratio for uranium in ground water at the 881 Hillside Area is always greater than
I which suggest the uranium is natural; however, the concentrations are observed to be over
10 times background in some locations. Cesium 137 and strontium 89, 90 are radionuclides
present in the environment due to fallout. There is insufficient data to determine if these
radionuclides are above background in ground water at the 881 Hillside Area. The Phase III
RI and background hydrogeochemical characterization will allow determination of whether
these radionuclides are contaminants of the ground water. However, we note that an
Independent Criticality Safety Assessment Team concluded in a report released in 1989, that
there has not been a criticality at the Rocky Flats Plant. Their conclusion was based on
review of radioactive cesium and strontium in soil and water, records of past operations,
criticality procedural infractions, plant renovations, fires and radioactive exposures.
-Comment 37
In tables 2-1. 2-2. and 2-3.400 pCiji is stated as background for tritium. How can there be a
rocJn.ell\ 881ha \r88P8W11.m&a
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background value for tritium since all is man made? The measured values for average trilium
aClivilY exceeds lhe average "gross" Bela activilY by an order 01 magnilude. How can this be when
all the lrilium aClivily is Bela?
RCSDonse to Comment 37
We understand your confusion on this subject. The background value for tritium is simply the
Minimum Detectable Activity for the analytical method, i.e., background concentrations of
tritium are less than what can be measured. However, we do Dote that tritium is a naturally
occurring isotope of hydrogen present in water and in the atmosphere. The gross beta value
does not include tritium, i.e., tritium is associated with the water which is driven off prior to
the analysis for gross beta.
~
Commem 38
II U (nalural) comenl 01 the waler to be trealed is 15 pCi/l (p. 2-23. 2-27. and p. 4-26) and has
an aClivity of 7 x /O:lCi/g. (See RFP response. p J2.to EPA 2/24/89) and mOsl 01 this Uranium
. is absorbed on lhe Slrong base resin. this amounlS to 285 g/yr. Will 28 cubic feel 01 the resin
contain this for 30 years as staled? Quile reasonable to believe il should. 285 g/yr is only 0.6
fb/yr.
ReSDonse to Comment 38
Our calculations indicate 30 years to be a reasonable life of the resin.
Comment 39
Will French trench contain su.r lace runol l.in heavy rain?
RCSDonse to Comment 39
The french drain is not designed to intercept surface runoff at any time, i.e.. it is covered.
It is only designed to intercept ground water.
Comment 40
p. ~-49 Worker (and surrounding populace) proleclion requires thaI no radionuciides are released
Irom the soil into the air and drift away.
ReSDonse to Comment 40
Please see our response to comment 6 that discusses your concern.
Comment 41
14.000 gallons 01 waslewaler are generaled per JOO.OOO gallons 01 waler lrealed.
to this waslewaler? See p. 4-28.
Whal happens
ReSDonse to Comment 41
As stated at the top of the paragraph, the Building 374 Process Waste Treatment System (a
precipitation/flash evaporation process) will treat the regeneration waste. Waste-regenerant
will be transported to Building 374 by tanker truck.
rock.ell' 881ha '",1'8"''' "'....
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Comment 42
P.4-27. Does IR120 or IRA 94/402 remove Se? If not. and only the activated alumina absorbs
the Selenium. a 50/50 split will not reduce the selenium to an ARAR level.
ResDonse to Comment 42
"
IRA 94/402 removes selenium. It is the activated alumina that docs not remove TDS.
However, only one-third of the flow need be demineralized through the strong cation and
anion system to achieve the TDS standard.
Comment 43
Will the Rohm & Haas IRA-402 resin remove any plutonium that might be present?
ReSDonse to Comment 43
Any plutonium that is present will be particulate in nature because of its very low sOlubility.
Particulates will be removed by the influent filters, aod the filters will be disposed off-site
as a radioactive mixed waste. Plutonium would not be a problem in the effluent because of its
very low sOlubility.
Comment 44
I am curious why old fuel oil tanks were filled with concrete rather than disposed of as scrap.
Did they comain something more toxic than oil? See p. 2-3. site 4. 5.
ReSDonse to Comment 44
Filling tanks with concrete is a common practice for abandonment. It guarantees nothing else
will be disposed in the tanks. We are not aware that the tanks contained anything else than
oil.
Comment 45
Par. 2 of p. 2-1 states that the mission of the plant is fabrication of warhead components. I am
left to wonder what else goes on in the plant that kilograms of plutonium. as reported in the press.
were in the ducts.
ReSDonse to Comment 45
We recognize yours' and the public's concern regarding plutonium handling at the facility.
However, the subject of plutonium operations is outside the scope of this interim remedial
action plan.
rock..U\ 8alba \ r'8p8um.maa
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COMMENTOR:
Joseph Goldfield, P.E., Vice President, Rocky Flats Cleanup Commission
Comment 46
The problem is not stated until page 2-31. It should be up front.
ResDonse to Comment 46
Please see our response to comment 33.
..
Comment 47
The plan should start with a summary and conclusions.
ResDonse [0 Comment 47
We agree with you, but as stated in our response to comment 33, the EP A EE/CA guidance was
agreed with EPA to be followed.
Comment 48
A section that defines the acronyms and initials designating agencies. laws. and many other items
must be included.
Resoonse to Commen[ 48
The regulatory climate pertaining to hazardous waste management and cleanup has created
a preponderance of acronyms that are used routinely. We understand your frustration, and
a table of acronyms will be provided in the final plan.
Comment 4Q
Table 3-1.2 - The ARAR for antimony is exceeded--O.0798>O.06.
ResDonse to Comment 49
You are quite correct. This is a typographical error and will be corrected in the final plan.
Comment 50
Beryllium is extremely poisonous. In Table 3-22 why not set ARAR-O.005? In air maximum
allowable concentrations for exposures to cadmium and selenium are 200 limes greater than that
for beryllium. Why is the concentration allowable in water set 10 times greater for beryllium than
for either cad mium or selenium?
ReSDonse to Comment 50
The maximum allowable concentration for beryllium in air is 200 times lower than for
cadmium and selenium because of the relatively more sever.e effects beryllium has on lung
tissue. Therefore, the analogy is inappropriate for determining the allowable concentration
in water.
rockwell\ 881h8 \rapeum.maa
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Comment 51
In Tables 3-1.1 to 3-1.4. 29 ARARs are exceeded. When reducing them to acceptable limits. each
one is considered as i/there are no other dangerous materials present. In selling standards lor the
removal 0/ air contaminants the presence 0/ all contaminants are taken into account. The
concentration 0/ each one. alter cleanup is divided by the maximum allowable concentration lor
that contaminant. The total 0/ all the fractions cannot exceed one. Thus. even i/ each contaminant
is brou'ght down to an acceptable level. compliance is not achieved until all o/the dangerous
contaminant fractions with respect to the allowable maximum total less than one. Unless a similar
method is used with water contaminantS. synergistic effect are not accounted for.
ResDonse to Comment 51
.
W,e are familiar with this methodolo~y to acc?~nt for add~tive ~~fects. It is used routinely in
rIsk assessments. However, the chemIcal specIfIc ARARs ldentlfled for the 881 Hillside Area
1M/IRA are largely CDH ground water standards or surface water standards for Woman
Creek. There is no provision in the respective regulations for downward adjustment of these
standards based on additive effects, i.e., compliance is achieved by meeting the chemical
specific standards.
Comment 52
Table 4-1 gives the contaminant concentrations that are used as a basis lor design o/the removal
systems. These values are lower than the maximum concentrations given in Tables 3-1.1 to 3-1.4.
Why aren't the higher values used lor system design? 1/ average values are being used lor design.
that is dead wrong. It means that lor about half o/the time. type system is underdesigned.
. ResDonse (0 Comment 5:
Flow is the most critical design parameter for sizing a treatment system. We believe the flow
estimates for the 1M/IRA to be conservative and thus the treatment system is adequately sized.
The use of maximum concentrations versus average concentrations for contaminants ha ving
the greatest impact on the treatment operation, i.e., organics and total dissolved solids (major
ions), would not change the design because these contaminants do not display high variability.
The treatment system can handle the maximum expected loading of contaminants.
Comment 53
Page 4-10 says that carbon beds that must be discarded become a candidate lor discharge at the
Nevada test site. What radionuciides are being collected that pose such danger that the carbon must
be shipped to Nevada? The report does not make this clear.
ReSDonse to Comment 53
On page 4-41, first paragraph, it is stated that uranium, either naturally occurring or from
past waste disposal, will likely adsorb to the activated carbon. Uranium is the only
radionuclide in the alluvial ground water at the 881 Hillside Area that is above estimated
background concentrations. Thus, there is a concern over the radioactivity of the carbon
increasing over time with the continued use of the carbon.
Comment 54
See page 4-17 )-A preheater will not "dehumidi/y" the air stripper emissions. 1/ dehumidification
is required a different process than preheating is needed. Heating thl! air will reduce the relative
humidity.
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ResDonse to Commen t 54
Dehumidify may be a poor choice of words. It is only necessary to reduce the relative
humidity to prevent water from condensing on the carbon. The wording of this statement will
be changed in the final interim remedial action plan.
Comment 55
Selenium has an ARAR of 0.01 mgll but its concentration is 3.2 mgll in the water stream that
must be treated (320 times as much). Similarly total dissolved solids are 2374 mglt but the ARAR
is 400 mgll . less than 20% of the amount to be treated. If only half the water flow is treated for
each of the aforementioned constituents how can the required concentrations be allained?
ResDonse to Comment 55
.
The expected influent concentration of total dissolved solids is 718 mg/l. not 2374 mg/l which
is the maximum observed total dissolved solids concentration in the ground water. The
influent concentration is significantly less than the maximum because the influent represents
a blend of low total dissolved solids ground water from the footing drain with collected
ground water from the french drain. Because both the activated alumina and two stage
demineralizer remove selenium but the activated alumina does not remove total dissolved
solids, it is only necessary to treat approximately half the flow with the two stage
demineralizer to achieve the ARAR for total dissolved solids.
Comment 56
The treatment system is designed to treat 30 gpm for 8 hours per day. 30 gpm x 60 minlhr x 8
nrs/day x 350 days per year - 5.000,000 gais/yr. The wail to stop contaminated water flow is
2100 feet/ong. If an area 300 feet wide is drained and the precipitation is 14 inches per year. the
gailons per year that will drain are 300 feet x 2100 feet x 14/ 12 feet x 7.5 galslcu ft - 5.500.000
gais/ year. The capacity of the system is aimost exactly equal to the water draining from the area
300 feet above the retaining wail. I f a greater area must be drained or if the wail must be
extended the system may have inadequate capacity.
R~sDonse to Comment 56
Your calculation of the expected flow at the french drain is a good theoretical method.
However, you should note that of the 14- of precipitation falling on the 881 Hillside Area,
much of this will runoff or be evaporated. Nevertheless, if additional capacity is required,
it will be necessary to operate the system beyond 8 hours per day. The actual capacity of the
system is 2 to 3 times what is estimated to be required.
Commem 57
The key problem with the proposed interim plan is that is must be regarded as temporary. Until
the sources of the contamination in the burial ground surrounding building 881 are complelely
removed. the people drinking water downstream oflhe ground water flow (drawing water from
Woman's Creek) are in danger of getting contaminated drinking water.
ReSDonse to Comment 57
The 1M/IRA specifically protects downstream users of alluvial ground water or surface water
of Woman Creek. The collection of the footing drain flow and the interception of the
contaminated alluvial ground water by the french drain will provide positive cutoff of
contaminant migration in these media. -r:he. 1M/IRA will operate until ARARs are achieved
for ground water and/or a final remedy IS Implemented.
roc.kw.u \881118 \lWp8\IIIUD&&
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Comment 58
On p. 2-25 dioctyl phthalate ( DOP) is described as the most prominent volatile organic contaminant
01 the 881 Hillside. DOP is principa//y used to test HEPA Iilters. Does the presence 01 DOP
annunciate the presence 01 spent HEPA Iilters grossly contaminated with plutonium? II it does.
then the validity 01 the '"Interim Remedial Action Plan" is ca//ed into question.
Reseonse to Comment 58
.
The validity of the 1M/IRA is based on our understanding of ground water chemistry and
flow, and the effectiveness of the proposed treatment system. Bis(2-ethyl hexyl)phthalate is
cited in the text as being prevalent in the soil. This is not the same as di-n-octyl phthalate
which was rarely present in the soils at the 881 Hillside Area. Bis(2-ethyl hexyl)phthalate is
a common plasticizer that is likely to be found wherever plastics have been used. We believe,
although we have not proven this hypothesis, that bis(2-ethyl hexyl)phthalate is present in the
soil samples because of handling the samples with plastic gloves. We have no reason to
believe, based on historical information, that HEPA filters were disposed at the 881 Hillside
Area. Also, the remedial investigation information does not indicate the presence of buried
HEPA filters.
Comment 59
As near as I can tel/. the plan estimates the expenditure 01 about $J million in capitol lunds in the
next 1-1/2 year - about $2 million per year. We have heard estimates 01 about $1 billion to clean
up the contamination at the Rocky Flats Plant. At th~ rate we are moving, 500 years is a good
estimate 01 how long il will lake.
'eseonse (0 Comment 59
The 881 Hillside 1M/IRA is only one of many parallel on-going activities that are pertinent
to cleanup of the Rocky Flats Plant and that are included in the Sl billion figure. In fiscal
year 1990, approximately 565 million dollars is budgeted for environmental restoration
lcti v i ties a t the Rock y Fla ts Plan t.
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COMMENTOR:
Gale Biggs, Ph.D., Rocky Flats Cleanup Commission
Comment 60
In lhe cleaning of the ground waler. lhe various melhods described do nol include lhe possibililY
of plulonium emissions since lhe driiiing has nol delecled significant quantilies of lhis melal.
However. lhis melal may nOI migrale wilh the ground waler if il allaches itself 10 soil parliculaleS.
This could also accounl for lhe smail amounlS delecled in lhe sampled waler. When remedial
activities start. the amount. pressure and chemical composilion of lhe liquid passing lhrough lhe soil
as part oflhe in-silu cleaning process could capture the plutonium. bring it 10 lhe sur face. and
produce measurable quantities in lhe processed water. A design for accommodating lhis possibililY
needs 10 be included in lhe program. Olherwise lhe plutonium could be released into lhe
atmosphere (perhaps undetecled) since no provisions were made for ilS presence.
..
ResDonse to Comment 60
Please see our response to comment 43.
Comment 6/
The possibililY exislS thai a source of air borne plutonium from lhe area is due 10 ref/oalalion from
the soil. II could be thai some of lhis plulonium is from lhe 903 pad. however, lhe highesl
measurements are eaSI and soulheasl of 881. Disruplion of lhe ground for miligalion could release
the plulonium contaminated soil into the air. There is no mention in lhe plan for miligation Oflhis
possibililY. A very thorough dUSI control plan needs to be eSlablished -even 10 lhe degree of
enclosing the earth moving aClivilies. Many techniques have been eSlablished for asbeSIOS control
to the environment: surely this plutonium remedial aClion couid adopi some of these techniques.
ResDonse to Comment 61
Please see our response [0 comment 6.
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COMMENTOR:
Bini Abbott
Comment 62
II
I have three main comments and first is on your inaccurate measuring of distances from Rocky
Flats to the neighboring communities. In the first place. on page 2-5. you're talking about surround
land use and you state that the nearest educational facility is the Sierra Elementary School. which
is six miles southeast of Rocky Flats Plant. If you look at the map. Sierra School is the red dot
way over here. That is not the nearest school. Sierra was built about 18 years ago. However. nine
years ago Will Elementary was built. which is about four miles. three and a half miles from the
boundary of Rocky Flats. Standley Lake High School is closer. Lucas Elementary was just built.
Moore Junior High was built in 1980 and is also closer to Rocky Flats.
.
I also feel that you should not measure from the center of the Rocky Flats Plant any more than you
would measure from the center of a beehive that is a half-mile by a half-mile. and then say the only
danger is coming from the very center of the beehive. You need to. I think. measure from the Rockv
Flats boundary when you're stating what is close. We live way closer than any of your maps sho~.
On that same page. page 2-5. you talk about some of the plants that are near Rocky Flats and you
have omitted floral products. which has had two fires and produced a lot of problems. also. Then
your bottom paragraph is ridiculous in my estimation. You're talking about agricultural statistics
in J976. Why would we care how many pigs and so on there were in the J976 area? You could get
updated information.
You also have a map. which is Figure 2-3. but not a page number. and it's talking about land use in
the vicinity of Rocky Flats Plant. It was taken after a Rockwell International map done in J 986.
Who knows what they lOok their map from. maybe something done prior to then. It is absolutely
inaccurate on where there's industry. where there are housing area. and it should be updated.
How can we have faith in your credibility when you can't even put the background information
down accuratelv? I'm aware that the chemists and so on who are doing the other reports did not
do this part. but this is sloppy and should not be left that way.
ReSDonse fO Commenf 62
Thank you for your comments. We have updated this information as indicated in our response
to comment 11.
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COMMENTOR:
Barb Moore
Comment 63
I have just a lew objections to the remedial action plan. I have a problem with that there is no
provision lor extracting plutonium Irom the water. I understand that now that has not shown up.
but what is going to happen if it does show up? Do we have a plan lor that? I think it is -- should
be planned lor. I think it is likely that plutonium could show up with the amounts 01 plutonium that
have been released on Hillside 881. I think that should be planned for.
.
ResDonse to Comment 63
Please see our response to comment 43.
.
Comment 64
I'd like to know how the cleanup 01 the cleanup operations are going to be handled. Are the French
Drains and ail this piping going to be lell in place allerwards. or is it going lO be cleaned up? And
if it's going to be cleaned up. how is lhat going to happen?
ResDonse to Comment 64
Please see our response to comment 30.
Comment 65
And what if the water does not prove to be sale lhat you are extracting? Do we have lacilities lO
store this water? ! I so. where is that going to be stored? ! understand that we are going lO reach
our capacity in the springtime. This cleanup operation isn'l happening lor another year. Where are
we going to store this extracted waste and the water should it become necessary?
ReSDonse [0 Comment 65
We do not understand your reference to reaching storage capacity in the springtime but
believe you may be confusing this with other Rocky Flats Plant waste storage issues not
connected with this action. The design of the 1M/IRA calls for two effluent tanks each with
one week of storage capacity. Furthermore, the capacity of the treatment system is 2 -3 times
the expected influent flow. In consideration of this treatment and storage capacity, we feel
it is reasonable that any operational difficulties encountered with the treatment plant can be
corrected in suffident time such that discharge of contaminated water is avoided. In
addition, a carbon "polishing" system may be installed if there are any operational difficulties
with the UV /Peroxide system. Ground water will not be collected from the french drain and
Building 881 footing drain until after startup testing operations are performed and the
treatment system is shown to be operating according to specification. In the meantime, we
note that organic contaminants are migrating very slowly in the ground water, and the footing
drain discharge may contain very low concentrations of organics (recent results show PCE at
only 8 ppb). Organic contaminants have never been detected in Pond C-2 where the footing
drain discharge ultimately flows. Furthermore, Pond C-l is monitored before discharge to
assure the water quality is acceptable as dictated by the plants NPDES permit. In light of
this, you should not be concerned about contamination being released off the Rooky Flats
Plan t property before the interim action construction is completed.
Comment 66
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I understand there's. you know. from what I've been able to figure. over 50.000 square feet of
ontaminated land area on Hillside 881. I have a real problem with heavy machinery driving over
this area and resu.spending the particles into the air. During past cleanup operations air monitoring
levels. plutonium levels have reached the state standards and. at times. have exceeded the state
standards. What air monitoring is going to happen during the cleanup and at what point will
cleanup stop should we exceed those air monitoring standards?
ResDonse to Comment 66
"
Please see our response to commen t 6.
.
Comment 67
I am confused that this plan has come about. in my eyes. fairly rapidly. In last February. 1989.
Troy Wade. in testimony before a Senate hearing. was telling us that Rocky Flats could never be -
- may never be cleaned up. When Senator Tim Wirth asked him about the ground water
cOnlaminahon. Wade acknowledged that the technology does not exist for cleaning up the ground
water or stopping the cOnlamination. I wanl to know. you know. what drastic measures have
occurred since February. 1989. to make this now a safe and feasible plan?
ResDonse to Comment 67
We do not know what information Mr. Wade was basing his comments on. However, we are
certain that the proposed 1M/IRA will be effective in significantly reducing contaminant
migration in the alluvial ground water system at the 881 Hillside Area, and in removing the
contaminants from the extracted ground water. DOE also recognizes that the public must be
reasonably convinced of the feasibility and legitimacy of this action.
Comment 68
At the last meeting here at FrOnl Range Community College. I may have misinlerpreted the
commenls. but the way I inlerpret it is that because of strong public objection. may delay the
cleanup of the ground waler on Hillside 881. would be the faull of the people who drafted the
plan. We need to have a plan thaI is acceptable to the public and thaI will not endanger our health.
I think our priorilies should lie with the people and the public safelY. and not with how many
dollars this is going to COSI us to clean this up.
ResDonse to Comment 68
Strong public opposition to the plan would delay the 1M/IRA. However, DOE is committed
tJ expediting the 1M/IRA according to a plan that is first and foremost protective of the
public health and environment. We feel that the plan that has been reviewed by the public
and this responsiveness summary demonstrates that commitment.
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COMMENTOR:
Mel Wright
Comment 69
First. comments against Rockwell--not against Rockwell. I appreciate you tTying to clean it up.
Leaving that stull there is nothing but a 'time bomb and it's going to get us. Any allempt to do
something is beller than silling on our hands. However. alter going to the hazardous waste seminar
Monday and Tuesday, the manulacturer 01 this ozone peroxide cleanup says they're having a lot
01 problems it won't touch. carbon tetrachloride. and it won't touch some 01 the unsaturated
chlorides. It works extremely well on trichloroethylene and the some chlorinated solvents. but at
least it's an allempt. At least it's something that's going to remove the great majority 01 the
contaminants as I see Irom the list. Just realize it will not work on carbon tet at all. and probably
will not work on the tetrachloroethylene. so you're probably going to have to do some air-stripping
or carbon liltration. something along that line as an alter-through. In other words. you don't want
to saturate your carbon lilters. so you basically will need an in-series type thing.
.
.
R~soons~ to Comm~nt 69
The UV /Peroxide equipment specification calls for the reduction of the expected i'nfluent
concentrations of both carbon tetrachloride and tetrachloroethylene to achieve the effluent
standards. i.e., the vendor of the equipment must guarantee the equipment will meet these
performance criteria. Furthermore, one vendor, Peroxidation Systems, notes that there is a
substantial body of' evidence that indicates saturated compounds can be treated with the
UV /peroxidation process. The evidence indicates that longer residence times are required to
treat saturated organics relative to unsaturated organics. Data presented in 1987 (Hager,
Loven, and Giggy, Chemic3l O~idation Destruction of Or~anic Contaminants in Groundwater.
HMCRI National Conference and Exhibition, November, 1987), indicates that 1.200 mg/l of
carbon tetrachloride was reduced to 0.3 mg/l with a reaction time of 30 minutes. The Hager
paper also noted that 705 ~g/l of tetrachloroethylene was reduced to non-detectable limits in
just 2.5 minutes. The longer residence time required for treating saturated compounds
translates into higher operating costs but no reduction in protection of human health and
safety.
Comment iO
One other thing, / rea//y didn't get to see your total diagram. but at one point your treated water
\Vas going to come out. You were going to test it. II it lailed the test you.are going to pump it back
in. in line. and in some ways it almost sounds like dilution. I'd rather see you set up another second
set 01 either the ozone treatment or some more carbon lilters. Possibility put some secondary
backup sysu:.ms; in other words. il you have breakthrough. don't resend it back through kind 01 as
a dilution scheme. but go on down the line. '
R~soons~ to Comm~nt 70
Indeed the influent would be diluted by recycling the effluent through the treatment system.
However. it is impossible for this effluent to dilute the influent to meet ARARs without
further treatment. Nevertheless, your comment is well taken. In order to minimize any
operational difficulties, a carbon "polishing" system may be installed downstream of the ion
e~change system. This redundancy would further facilitate smooth operation of the facility.
Comment i /
I'm just going to keep it at that lor your comments. and Some comments to my concerned citizens.
First. even though this is an interim cleanup. hopelu/ly you're going to lo/low the OSHA rules.
19/0.20. it very well defines exactly what these guys have to do. how :hey monitor. what kind 01
equipment the people have to wear. what kind 01 dust they can stir up. and ail you have to do is you
can call up OSHA and ask for /910.20. It'll tell you everything you want to know about what these
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uys have to do. Hopefully, you will follow it.
Okay. Even though it's an interim cleanup. by law. a 101 of times if you're doing inlerim. EPA
allows you to bypass or not follow a lot of the rules thai a Super Fund sile would. or a normal
cleanup facility would. Hopefully you're going to follow /9/0.20. and I highly suggest everybody
in the audience call up OSHA and ask for thai paper, and il will answer--there was aboul three
people who had questions about thai. II will answer all your queslions. All you've gOllo do is ask
these guys are they going to follow thai.
.
Lei's see. the second thing. I'm concerned thai il seems like the major concern 01 the audience is.
"Let's don'l do anything. We'll just leave il there." My complaint is. we've PUI it Ihere. II's Ihere
in concentrated form. Let's get rid of it. You guys are worrying about slirring up a lilile dusi.
What do you think wind storms do? What do you think-where does the rainwater go? It washes off
the property. You guys are probably more contaminated by what the wind blows up. whal the
rainwater washes off than these guys will ever stir up. Hopefully they will reduce il. you know, PUI
up--hopefully, you'll take this one guy's comments. maybe put a dome over it. a simple. cheap dome.
You'll water. it down. do everything possible to reduce it. but you know and I know as an
environmental chemist. these guys are more at risk from what the environment is throwing out to
them than you guys will stir up in the cleanup.
We've got to start trying to remove something. If you leave ilthere. it's a time bomb and it will get
you. So my comment is. first. I appreciate that we're going to try something. work it out. realizing
it is an experiment. but hopefully intelligence allows some thought to go into it. You work at it. you
improve it. but at least do something.
Again. send away for the information and let's try and work together. I want to protect my life
and my environment. and the way to do it is to help people solve the problem and understand it.
50 send away for the literature and go from there. Remember, the ozone thing doesn't work on the
arbon let, and that's il. Thank you very much.
R~SDonse to Comment 71
We fully intend to comply with OSHA regulations. We appreciate your support on this project.
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COMMENTOR:
Mr. Reynolds
Comment 72
My concern is--one is resuspension and on-site and o//-site Hill 881. as well as some of the areas
that I've been told about that have a fairly high radioactivity just east a/Indiana. Is there any
particular reason why we couldn't be using some 0/ the adhesive sprayed currently in some of the
core sample sites or some of the core sites to keep the resuspension down in this area. which is only
about. whale a mile and a half. two miles from a major high school that was just fairly recently
built and a very large populalion in thaI area. Is there any particular reason why we couldn'l be
putting something down to keep thaI down? I understand that they're taking measures to. I've been
told. plow under as well as re-vegetate. bUI some 0/ this adhesive material that I've read about thaI
they've been spraying in these areas /01' the core sampling have been used. and why not use it there?
..
Resoonse to Comment 72
The plowing and revegetating activities refer to the soil remediation being conducted ju~t east
of Indiana Street. We appreciate your concern, however, that project is not part of this
interim action and is therefore outside the scope of the plan and this response to comments.
With regard to the 881 Hillside Area, please see our response to comment 6.
Comment 73
Also. in the--this may not--I may be out 0/ order in asking this questions. but with the recent
accident yesterday o/the aircraft accident and previous to that. the air show which we had a large
number 0/ aircraft. is there--especially now with the-all these boxcars out there and the high
potential of--or high exposure I'd suggest that we've had probably prior to the--and 1 think you call
it the £PA's evaluation of accidents. 1 don't know i/that was considered at that time: that is. all
the boxcars we have out there now. But is there any consideration in the remedial time of looking
at redirecting traffic or--and 1 don't know how you do that with a major airport right next to it.
out on the other hand. is that being considered? And if iI's not. I'd sure appreciate it if it would
be.
Resoonse to Comment 73
We appreciate your concern regarding the potential for these accidents but we note that the
air space above the Rocky Flats Plant is already restricted.
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WRITTEN COMMENTS:
Annette Barnard, Manager of Water Quality. City of Thornton
Comment 74
The City 01 Thornton would like to thank the Colorado Department 01 Health and the Department
01 Energy (DOE) lor the opportunity to submit comments on the Proposed Interim
. Measures/Interim Remedial Action Plan and Decision D.ocument lor the 881 Hillside Area. The
City believes that the option selected by Rockwell Intenumonal. the UY / peroxide and ion exchange
treatment system. is the appropriate solution because it accomplishes complete destruction 01 the
contaminantS without lormation 01 additional hazardous wastes or other byproducts. In addition.
we leel that the French Drain collection system is an excellent choice lor collection 01 the
groundwater.
.
R~SDonse to Comment 74
We appreciate your support.
Comment 75
The French Drain should be extended on the east end to include coverage 01 Solid Waste
Management Unil (SWMU) 119.2 which was used lor barrel Slorage.
, ReSDonse [0 Comment 75
As discussed on page 6-1. second paragraph, if the bedrock lithology verification program
ndicates the presence of saturated colluvial material downgradient of SWMU 119.2, the
french drain will be extended to collect ground water in this area.
Comment 76
A detailed operating procedure should be developed to establish an appropriate water quality
monitoring system and to define treatment criteria and standards.
ReSDonse to Comment 76
Treatment criteria and standards are defined in the plan. An Operation and Maintenance
manual will be prepared for the facility which will outline the monitoring requirements. This
manual will be available for public review before the treatment system is operational.
Comment ;'7
In the interest of public relalions and public safety a .Hudy should be funded to determine an
appropriate collection system to take Pond C-2 waler and runofl from the sile to prevent
contamination of the drinking water supply for the Cities of Thornton. Northglenn and Westminster.
ResDonse to Comment 77
DOE is investigating alternatives to discharge of Plant runoff via Pond C-2 to the Woman
Creek drainage. However, we would like to point out that all discharges from Pond C-2 will
e monitored in accordance with the Plant's National Pollutant Discharge Elimination System
ermit. Water that does not meet the surface water standards for Woman Creek will not be
discharged. Please see our response to comment 1.
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Comment 78
A permanent system should be developed to intercept flaw from Woman Creek and divert it around
Standley Lake to prOleCl public heallh from contamination which may not be known or apparent al
this time.
RC:SDonsc: to Commc:nt 78
Please see our responses to comments 1 and 77.
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WRITTEN COMMENTS:
Environmental Protection Agency
('omment 79
Section 2.1.6.2. In light of the data validation study performed by Argonne National Laboratory.
conservative analyses of the soils data must be summarized for inclusion within this report.
SpecificaJiy. until further field work is conducted at the 881 Hillside to verify or refute the
presence of both volatile and semi-volatile constituents. the previous soils evaluation must be
presented. More than 3 of the 23 boreholes were contaminated and the soils were contaminated
with more than PCE. TCE and 1.1.1-TCA.
R~sDonse to Comment 79
..
The text will be revised in the final plan to simply summarize the data and discuss it's
limitations. References to risk will be deleted.
Comment 80
Section 2.1.6.3. It should be stated that ~ 'il1ilii. sampling of the ponds within Woman Creek
indicate that there are no VOCs present.
R~SDonse to Comment 80
This addition will be made in the final plan.
~omment 81
Section 3.2. The schedule presented must reflect the extension of the public comment period. The
procurement dates for the fan Exchange System seem to be in error.
ResDonse to Comment 81
This is a typographical error that will be corrected in the final plan. Also, the extension of
the public comment period, and the response to public comments and finalization of the plan
will be reflected in the new schedule. This will alter the overall schedule for construction and
startup of the 1M/IRA. The revised schedule is provided in Section 3 of the final plan.
Comment 82
Section 3.3. The chemical specific ARAR for gross beta is 4 mrem/ yr (a National Interim Primary
Drinking Water Regulation) or 50 pCi/1 (a SDWA MCL). whichever is more stringent.
ResDonse to Comment 82
Actually, 50 pCi/1 is simply a criterion above which it is necessary to analyze specific man-
made beta emitting isotopes to assess if the 4 mrem/yr standard is exceeded. The change will
be made in the final plan.
r;omment 83
oection 3.3.1. The Chemical Specific ARAR for antimony is exceeded. It appears that the
Chemical Specific ARAR for nitrate is exceeded. The RCRA Subpart F standard for 1.2
Dichloroethane is 5 ppb. This is a final MCL.
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ResDonse to Comment 83
Antimony and nitrate do exceed ARAR. These were typographical errors that will be
corrected in the final plan. As noted in Table 3-2.1, 5 ppb is the RCRA Subpart F, CDH
ground water, CDH surface wat~r. and MCL standard.
Comment 84
Section 4.3. Table 4-1 presents the basis for design of the 88J Hillside treatment technology as
based on a flow weighted average of the footing drain and alluvial groundwater collected by the
french drain. Is the source well included in the design basis for the treatment technology?
ResDonse to Comment 84
The source well has not been included because it would represent double accounting of
contamination. Well 9-74 and 43-87 are included in the computation of the expected ground
water chemistry of alluvial ground Water collected by the french drain. Also, the source well
will be pumped and the discharge treated prior to the french drain being placed into service.
By the time the french drain is in service, it is expected that the source well will have lower
contaminant concentrations and produce a low steady flow (estimated below 1 gpm). This
should not significantly affect the influent chemical characteristics, at least relative to the
compu ted infl uen t characteristics.
Commem 85
Section 4.5.1.1. Figure 4-9 shows the 6- perforated pipe placed above the drain s.,ump. The top of
(he sump shall be located approximately two feet below the imerface of the 10:2. cmls hydraulic
conductivity bedrock and bedrock or alluvial soils having greater than 10:!i cmlsec hydraulic
conductivity. The perforated pipe should be placed so that liquid cannot accumulate above the level
of the lined sump. i.e. the top of the oipe should be placed below the top of the sump.
ReSDonse to Comment 85
We agree, and the changes will be made in the final plan.
Commem 86
Section 4.5.3.2. The last paragraph states this action is a removal. This action is an f RA. . Delete
(his statemem.
ResDonse to Comment 36
This is a typographical error resulting from the original draft plan referring to the 1M/IRA
as a removal action. The terminology will be deleted.
Commem 87
Section 6.0. As the soil boring program is scheduled for mid-October through mid-January. the
driest time of the year. placement and frequem monitoring of permanent piezometers downgradiem
of SWMU 119.2 is recommended to evaluate the saturated or unsaturated conditions downgradient
of the site.
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Resoonse to Comment 87
I'he schedule for the soil boring program has been moved back for technical and
administrative reasons. It will now be conducted in the late winter/early spring.
Comment 88
It should be noted that the /5 feet into bedrock calculation for interception of dipping sandstones
is dependent on the relative elevation of the top of bedrock. If the adjacent western borehole
bedrock elevation is lower than the elevation of bedrock in the borehole being drilled. /5 foot
penetration into bedrock may not intercept a dipping sandstone identified in the adjacent borehole.
.
Resoonse to Comment 88
Given the 15 foot depth was estimated based on a dip of 7°, and the current estimate of dip
is 1 ° to 2°, intercepting potentially subcropping sandstones with a penetration depth of 15 feet
is almost certain regardless of differences in the top of bedrock elevations.
Comment 89
It might be prudent to maintain and archive the bedrock cores for potential future submittal for
laboratory permeability testing. This contingency could be used if the in-situ permeability testing
proposed does not generate acceptable information.
~esoonse to Comment 89
'[he suggestion is a good one and will be considered.
"
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D.
REMAINING CONCERNS
All issues pertaining to the proposed interim action have been resolved by this
Responsivepess Summary or the final interim action plan.
The only issue that remains
unresolved is the mixed public opinion regarding routing Woman Creek flow around Standley
Lake. The issue, however, is not pertinent to the 881 Hillside Area interim action.
"
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~
"
I"OC.kw.U \ 881ha \1'8p8WD.maa
A IT ACHMENT
COMMUNITY RELATIONS WORK PLAN
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\"
"
COMMUNITY RELATIONS
WORK PLAN
SUBMITTED TO EPA, REGION VIII
by
The Department 01 Energy, Rocky F1ats Office
-------
COMMUNITY RELATtONS PLAN
U.S. Cepartment of Energy, Rocky Flats Office
October 2~ 1989
.
"
The Comprehensive Environmental Response. Campensation and Ua.blllty Act
(CERC1.A) requires that a Cammunlty Relations Plan be developed If a facility Is
placed on the EnvironmentaJ Protedlon Agency's (EPA) NaUONU Priorities Ust
(NPL - Superfund). In September of 1989. The RocJty Flats Plant, owned by the
C..-rtment of Energy, was placed on the NPL by the EPA. OI1C8 a sUe Is added
to the NPL, a Community Relations Plan must be p,...red tor removals (cleanup
sites) lasting longer than 4S calendar days. The following Is the proposed wente
plan for the Rocky F1ats Cammunity Relations Plan and Is divided accordlngty:
'"
1. Content:
8 PUf1'Ose of the Cammunity Relations Plan
8 Historical Geographical and Tectuucal SUe History
8 Community Background
8 Key Commu,uty Cancerns (derived tram Interviews)
8 History of Cammunlty Involvement (dertved tram media cUps)
8 Community Relations Strategies (required and suggested by EPA's
Communltv Relat10ns 'n Sucerlund: A Handbook)
8 Schedule of Cammuntty Relations ActtvitIes
8 Procedure tor AdmjnistraUve Record and Locations
8 Repository InformatJon- (content and locations)
8 Remedlallnvest1gaUonslFeasi~Dty Studies (RIIFS) Process and General
Remediation IntormatJon and Procedures
8 Required Public Camment Procedures and Ttm. Periods
. Malnng Ust of Key Cantacts and Interested Parties
. InformaUon on DetemU,ung L.ocadon of PubUc Meetings, News
Conferences. Present.atfons and Wortcshops
2. Goals and Obledtves:
.
TI1. Community RelatJons Plan (C~P) will provide In document torm
accurate. tlmely, and understandable IntormaUon. and st~ the public
can take to partJcipate in decisions regarding cleanup acUvities at the
Rocky F1ats Plant. The CRP will allow the public the opportunity to learn
about the Site. the Superfund program and to provide Input on technical
decJslons during the RIIFS process prior to remedial fteld work.
The CRP will contJnuousty Intorm the pubOc ot planned and/or ongoing
remedial cleanup ac:1IviUes at the Plant. Throughout all of the cleanup
processes It will serve as a blu~rlnt outlining the timing ot those
8
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COMMUNITY RELATtONS PLAN
U.S. Department of Energy, Rocky Am Office
October 28. 1989
3.
4.
.
acUvltles and the public's role.
The CRP will establish a posttlve working relationship among the pubOc.
the D~rtment of energy (DOE), the EPA, the Colorado D~r1ment of
Health (CCH), and Plant personneL Thla communicadon will focus on
and resolve any past contDct and avoid any future mtscommunicadons.
)
"'e Deslon of the CRP~
.
The desjgn of the CRP will follow the guidance and regulations provided
In EPA's Communltv R.fattons In SUDerlund: A Handbook. the OOE,
and CCH regulations.
The desjgn of the CRP will Include Input by the pubRc through surveys
and extenstve community Interviews conducted by the CRP Coordinator
and staff, Plant public Information staff, and Plant technicaJ staff (when
appropriate).
.
.
The proposed final draft of the CRP will be developed by the CRP
Coordinator and reviewed by the operating contractor, OOE, EPA, and
CCH personneL After review of the document by these agendes the
CRP will be subject to the required puatlc comment period.
Following guidelines established by appllcaale regulatory agendes for
community relations acUvtU.. related to ci88nup and remedla'
Investigations, the CRP will atso be subject to condnuous revistons for
spedf'lc sites undergoing remedJa' action at the Plant. Under these
guJdelines, the CRP WIll be perceived as a 8tMng document'" and th&
puaUc will be provided the opportunity for Input throughout the process.
.
Communltv Concems:
.
Prior to the writJng of the proposed CRP, extenstve Interviews will be
conducted. Ctlzens will have the opportunity to parUdpate through
puatlc meetings. fac&-to-face InteMews, Informat group meetings and
woritshops. Groups to be targeted for InteMews are dlKUssed In
S8dton 6. Based on existing hlstorlca' Informadon, lnitfaj concerns to
be .~lor8d., but not IImjted to, are: rul or perceived heatttl threats
from the production at the Plant; environmental concerns; Iwets of
pubUc technical knowledge; economic Issues such as propeny values,
Income tax bases and revenues; and the credJbtBty of involved
govemment agencies.
.
The goat of community Involvement in the CRP will be to IncJude and
Inform the public through accurate Informadon and communicadon
regarding cleanup activities, and to develop trust and r~ between
the surrounding communities, the operatJng contractor, and the ap-
propriate agencies.
The strategy to'be used for gathering Information on current community
concerns through the Intervi8Mng process willlnclud8:
.
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COMMUNITY RELATIONS PLAN
U.S. Cepartment of Energy, Rocky Rats Office
October 28, 1989
.
Cevelopment of an Interviewtngteam(s) who wtllbe knowtedgeabi..
empathetic. non-threateNng and know stte background and
community history.
Prior 10 Interviewing, the t88111 wtll detemUne a cross-s8dlon of the
public to Interview. These groups and persons wtll be derived from
majUM4; lists and corr~ndenee ftles provided by the COe. EP A.
CtlH, and the Plant. It 15 anticipated that onee the Interviewing
process begl~ I ntervi ewHS wtll suggest other groups or persons
who may wish to provide Input.
~
.
"
.
The Interviewtng team(s> will divide the list of Intervtewees and,
based on the team's 8~rUS" determjne who will target certajn
groups and/or areas.
TImes and locatJons for Interviews will be arranged at least seven
to ten days prior to the Interview. ConftrmaUon telephone calls
, will be made. .
.
.
Prior to going Into the fteld. the Interview team(s) will outfJne the
pufJ)Ose of the CRP, organae quesUo~ and practJce dlplornaUc
responses to dJfftcutt questions.
The media will be contacted and briefed on the development of the CRP
by personnej 3elected by the operating contractor. 111ls brietlng will
contJnu. throughout the CRP process. mahrtmmng consjstency and
c!artty at all times. -
.
. /~ J
.
The medJa will se,.,e as a successful tool for the CRP as the Interview-
Ing team(s) and appropriate agency personnel will concentrate on
building good media re&a1Jons through open communication. updated
Information. and easy accessj~Dty.
5.
Acttvftles:
ActtvitJes Included In the CRP will be determjned by the EPA guldednes as
set forth In the C,mmunltv Relattons In Sucerlund: A Handbook. It 15
antJcipated that addlt10naj activities will result from community Interviews;
however, history shows that the following actMtJes will occur:
.
Maintaining open lines of commumcatlon with Interested parties. The
~P CoOrdinator and appropriate agency personnel will contJnue to
make themsetves available to talk to Interested persons about
en'lfronmentallssues and concerns. 111ls policy of open communjcatJon
will contJnue during the entire CRP process and will Include follow-
up. The CRP Coordinator and agency pesonnej will also participate In
meetJngs to keep the public Informed about technical and community
relations acttvftJes.
.
Fact sheets, Informational updates, and technical summaries will be
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COMMUNITY RELAT10NS PLAN
U.S. Cepartment of Energy, Rocky Ftats Offtce
October 28, 1989
.
prepared. kept current. and made available to the public through the
Plant PubUc Information Department and r~sttories on a regular basis.
A thorough mamng and contact 1st 'Mil be established and maintained.
These lists 'Mil be k. current and expanded as remedlai projects
progress to proyjde Information to aU Interested parties.
News re'eases will be pnlf:)8red for the local medlL Because the local
media are the source of Inform8tlon for many of the peop'e queried.
news releases will be provided to n~ televtston, and radio
stations to announce slgniflcant ftndlngs and/or milestones and to notify
the communJty of public meetings.
"
~
.
Adm'nlstratlve records 'Mil be k~ on sJte and project Infonnatton and
. 'Mil be mahrta!ned at InformatJon repositories. The CRP Coordinator or
hlSiher desjgnee 'MIl ensure accuracy by keepjng the Information up to
date at the repositories. The Information In the adm'nlstrative record
'Mil focus on remedJaj clean~ activitJes at the Plant and will be
avallab'e for pubUc nM8W and comment. Although at least four exist.
addltJonaJ repositories may be esaacllshed.
Intorma' and formal pubRc meetings with Interested groups and area
r8Sidents 'Mil be hetd with requ.red advanced notice followed by a
requ'red comment penoci. These meetings will provtde Information on
specJftc prolects at the Plant. and appropriate agency parsenn" 'MU
respond to concerns. IncludJ~ those of a tectuucaJ nature. Pub8c
mHtlngs 'Mil ba 5d1eduled In rftltlon to each remedJal cleanup project.
Some ot these meetings may fake the form of an .open house'"
featuring experts In a variety ot ftelds.
,
, "\ '
.
.
The opportunity for public comment 'Mil be welcomed. Interested
groups and cUJzens will be encouraged to comment verbally or In
written form on remedJaJ Investigations. feasibility s1UdJ~ and other
malor reports as they relate to ~edftc cleanup prolects. Sutftdent
tlme Is required for advanced notice ot the comment periods to a'iow
adequate tima for comment. A minimum ot SO days 'Mil be allowed for
public comment on preterred alternatives for remedial action at the
Plant.
.
As the CRP will address CERClA and Resource Conservation and
Recovery Act (R~) Issues. the CRP Coordinator and Plant personnel
will work closely and cooperadYety with COE, E?A and CDH.
.
Responsiveness summaries win be prepared which will summarize
stgnlflcant public commentS and concerns raised betore and during the
public comment period on draft feasibllty studies. The Respc;lnstveness
Summary Is required as part ot the Record ot Dectslon (ROC) and
Correc:1Jve Ac:tJon Dec.tsion (CAD) for each remedial cleanup sttL It will
document how citl%en comments were considered throughout the
decjsion-maldng process.
Newspaper notices will be published to intorm the public that the ROD
.
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L..
COMMUNITY RELATtONS PLAN
U.S. Department of Energy, Rocky Flats Office
October 28, 1989
or CAD 13 signed and of the awllabiUty of the final remedial action plan
selected. These notices will be ptaceclln major Jocaj newspapers of
general cJn:ulatton after the remedy has been selected and the ROD or
CAD Is signed. but betare conwnencement of any remedial acttvttIes.
In summary, open communJcadon with concerned citizens and groups,
regular public meetings and open houses.lntarmaA group meetings, and
public comment penods on major reports are the pnmary acttvttIes of
the CRP tor the Plant.
s.
Groucs Identlfted to Int.Mew for Comments to be Included In the C~P~
.
Elected and/or appointed otftcla1s:
.
Governor's Otftce
.
Congressional delegation
Mayors., c:ty Managers., s8Mtd Council members and Legislators
01 the surrounding area
.
. Educators
. Rocky F1ats Environmental Montonng Council
. O1ambers 01 Commerce In surrounding area
. C:vtc groups In surrounding Plant area
. Environmental groups
. Rocky Rats Cleanup Commjssion
. O1urctl groups
. Industrial groups
. Ala reponers
. UnJon employees
. Loca. landowners
. Directors 01 area homeowners' u~.at1ons
. Area agnCtlttural u~ons
. Area ed1tonal boards
It Is anticipated that this list of groups wtll be expanded once the
Intervtewing process begins.
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COMMUNITY RELAT10NS PLAN
U.S. Department of Energy, Rocky F1ats Office
October 28, 1989
7. Protect Schedule:
A CRP wUl be prepared accordl~ to the fallowt"'il schedules:
cadi E'iitj J
~ Frnlsn KdIVftY
11/1/89 11/14189 Cammunity Survey Plan (CSP) seeping with EP A and ~
CDH
11/15/89 12115/89 Draft CammurUty Survey Plan (CSP)
12118189 1/23190 RFi' review draft CSP. Resolve and finalize (CSP).
1124190 2/21/90 EPA and CDH r8Yiew CSP
2122190 :3/22/90 F1nailzeCSP
312:1/90 5/21190 Implement CSP (Perform survey/1ntervtews CSP)
5122190 7/19190 Review survey ftndlngs and prepare CRP draft
7120190 8117190 RFi' review draft CRP
8120190 9/18190 Resolve comments and tlnallze draft (CRP)
9/19/90 10117190 EPAlCDH review (CRP)
10118190 12118190 Resolvelssua and ftnailze CRP
12119190 2/6/91 Public commenl period - CRP
2/1/91 415/91 Public comment. response (Responsiveness
Summary)
418191 5/6/91 EPAlCDH flnaJ review Response Summary (CRP)
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