r
%EPA
United States
Environmental Protection
Agency
Office of
Emergency and
Remedial Response
Superfund
Record of Decision
Odessa Chromium I, TX
EPA/ROD/R06-88/026
March 1988
PROTECT! OF-'
AGENCY
DALLAS. YBCAS
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50272-101
REPORT DOCUMENTATION
PAGE
1. REPORT NO.
EPA/ROD/RO 6-88/026
4. Title and Subtitle
5UPERFUND RECORD OP DECISION
Chromium I, TX
cond Remedial Action - Final
'. Author(s)
3. Recipient's Accession No.
5. Re:
8. Performing Organization Rept. No.
9. Performing Organization Name and Address
10. Project/Task/Work Unit No.
11. Contract(C) or Grant(G) No.
(C)
(G)
12. Sponsoring Organization Name and Address
U.S. Environmental Protection Agency
401 M Street, S.W.
Washington, D.C. 20460
13. Type of Report 4 Period Covered
800/000
14.
IS. Supplementary Notes
16. Abstract (Limit: 200 words)
The Odessa Chromium I site consists of a series of chromium-contaminated wells within
300 acres of residential, commercial, and industrial properties and facilities
immediately west of West County Road, just outside the northwestern city limits of
Odessa, Ector County, Texas.• Nearly every residence or commercial facility is served by
one or more water wells completed in the underlying Trinity Aquifer, which offers the
nly source of potable ground water. Two potential sources of ground water
tamination at the site have been identified: 4318 Brazos property, and 2104 West
3 Street. In December 1979, the Texas Department of Water Resources identified the
4318 Brazos property as a potential source of chromium contamination. Several chrome
plating operations functioned at this property between 1972 and 1977. The site at
2104 West 42nd Street is presently operating as a metal plating facility. This property
was first identified as a possible source of ground water contamination in 1978. The
first operable unit ROD, signed in September 1986, provided for the extension of the
city's water supply until final ground water remediation is complete. Although chromium
is the primary contaminant of concern affecting the ground water, other inorganics have
been found in the soil. •
(See Attached Sheet)
17. Document Analysis a. Descriptors
Record of Decision
Odessa Chromium I, TX
Second Remedial Action - Final
Contaminated Media: gw, debris
Key Contaminants: chromium
b. Identifiers/Open-Ended Terms
f
c. COSATI Field/Group
Availability Statement
19. Security Class (This Report)
None
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None
21. No. of Pages
92
22. Price
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OPTIONAL FORM 272 BACK (4-77)
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EPA/ROD/R06-88/026
essa Chromium I, TX
cond Remedial Action - Final
16. ABSTRACT (continued)
The selected remedial action for this site includes: demolition and disposal of a
building at 4318 Brazos; ground water pump and treatment using electrochemical
techniques with reinjection into the Trinity Aquifer; and ground water monitoring. The
estimated present worth cost for this remedial action is $2,836,000.
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Declaration for the Record of Decision
Site Name and Location
Odessa Chromium I, near the Odessa city limits, Ector County, Texas
Statement of Purpose
This decision document represents the selected remedial action for the
Odessa Chromium I site, developed in accordance with the Comprehensive
Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) as
amended by the Superfund Amendments and Reauthorization Act of 1986 (SARA),
and the National Contingency Plan (40 CFR Part 300).
Statement of Basis
This decision is based on the administrative record for the Odessa Chromium I
site. The attached index (Attachment A) identifies the items which comprise
the administrative record upon which the selection of a remedial action is
based.
Description of the Selected Remedy
This Record of Decision for the Odessa Chromium I site requires the following
actions to address the chromium-contaminated groundwater:
o Demolition and disposal of building at 4318 Brazos;
o Extraction of contaminated groundwater from the Trinity Aquifer;
o Electrochemical treatment of groundwater which exceeds the Primary
Drinking Water Standard for chromium;
o Reinjection of treated groundwater into the Trinity Aquifer;
o Monitor site for a minimun of 30 years.
Declaration
The selected remedy is protective of human health and the environment,
attains Federal and State requirements that are applicable, or relevant and
appropriate, and is cost-effective. This remedy satisfies the statutory
preference for remedies that employ treatment which permanently and significantly
reduces the toxicity, mobility or volume of hazardous substances as their
principal element. Finally, this remedy utilizes permanent technologies to
the maximum extent practicable.
The State of Texas has been consulted and agrees with the approved remedy.
3-18-88
Date Robert E. Layton Jr./P.E.
Regional Administrator
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Odessa Chromium I
Record of Decision Concurrences
The Odessa Chromium I Record of Decision has been reviewed and I concur:
Allyn M. Davis, Director
Hazardous Waste Management Division
Bennett Stokes, Chief
Solid Waste & Emergency Response
Branch
Office of Regional Counsel
Carl t. Edlund, Chief
Superfund Program Branch
Hazardous Waste Management Division
il-1
Stanley G. Hitt, Chief
Texas Remedial Section
Superfund Program Branch
Hazardous Waste Management Division
Bbnrne J. WVos, Chief
State ProgrUs Section
Superfund Program Branch
Hazardous Waste Management Division
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Table of Contents
Page
1. Site Location and Description 1
o Site History 1
o Geology 2
o Remedial Investigation Results 3
o Potential Impact of Site 4
2. Enforcement 5
3. Community Relations History 6
4. Alternative Evaluation 6
o Evaluation Criteria 6
o Description of Alternatives 9
o Evaluation of Alternatives 11
5. Selected Remedy 14
o Rationale 14
o Operation and Maintenance 15
o Future Actions 15
o Remedial Action Schedule 15
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Summary of Remedial Alternatives Selection fur
Odessa Chromium I; Operable Unit -II
Odessa, Texas
I. SITE LOCATION AND DESCRIPTION
The Odessa Chromium I Superfund site consists of a series of chromium
contaminated wells within 300 acres of residential, commercial, and
industrial properties and facilities immediately west of West County
Road just outside the northwestern city limits of Odessa, Ector County,
Texas (Figure 1). Based on the boundaries of the known chromium
groundwater contamination in the Trinity Aquifer, the impacted area is
bounded by 48th Street to the north, West County Road to the east, 43rd
Street to the south, and one-half block west of Brazos to the west.
Nearly every residence or commercial facility is served by one or
more water wells completed in the Trinity Aquifer, which offers the only
source of potable groundwater. - Approximately 30 people within the study
area are served by wells contaminated with chromium above the current
drinking water standard of 0.05 mg/1.
Site History
Two potential sources of groundwater contamination at the site have
been identified. They are the past operations at the 4318 Brazos
property and current operations at 2104 West 42nd Street, the 4318 Brazos
property was first developed between 1954 and 1961. Several chrome plating
operations have functioned at the property between 1972 and 1977. Prior
to 1979 a water well at 4313 West County Road became contaminated by
chromium and was abandoned. In December 1979, the Texas Department
of Water Resources, the predecessor agency to the Texas Water Commission
(TWC), identified 4318 Brazos as a potential source of chromium contami-
nation. A water well at the property was contaminated with 190.0 mg/1
chromium. Although chromium is the contaminant of greatest concern at
the Odessa Chromium I site, other inorganics have been found in soils at
4318-Brazos and 2104 West 42nd Street.
The site at 2104 West 42nd Street was first developed in 1954. A metal
plating facility, is presently operating from the site. The property was
first identified as being a possible source of chromium contamination in
groundwater in 1978 when TWC investigated a complaint of chromium in a
well at 38th Street and Rasco. Prior to 1979, surface spills and discharge
of waste into a septic tank had been occurring. In 1979 the company
modified its wastewater facilities in an attempt to alleviate
the problem.
In September 1984, the Odessa Chromium I site was added to the National
Priorities List (sites which appear to present a significant risk to
public health or the environment). The State of Texas entered into a
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X.
•J
ODESSA CHROMIUM I
SITE
3300
3300 Ft.
APPROX. SCALE
SITE LOCATION MAP
REMEDIAL INVESTIGATION
ODESSA CHROMIUM I SITE -
ODESSA. TEXAS
PREPARED FOR
TEXAS WATER COMMISSION
AUSTIN, TEXAS
/ R&A / HOWELL
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Cooperative Agreement with the Environmental Protection Agency (EPA) on
September 26, 1984, to perform a Remedial Investigation (RI), Focused
Feasibility Study (FFS) for Operable Unit I and a Feasibility Study (FS)
for Operable Unit II. The total funds awarded to the State for these
studies was $791,030. The RI fieldwork (soil, groundwater, sediment and
air sampling) began in August 1985 and a draft report was submitted April
1986.
In January 1986, the EPA and the TWC initiated the FFS for Odessa I.
The single purpose of the FFS was to examine possible alternative water
supplies which could provide potable water to the area(s) within the
greater Odessa I site where groundwater is contaminated or could reasonably
be expected to become contaminated by chromium within 24 months. The
extension of the Odessa City water system was the remedy selected on
September 8, 1986. The design of this system was completed during December
1987. The construction phase of the water supply project is scheduled
for completion by December 1988. The extension of the city's water supply
is intended to provide potable water until "the-ffnaT remediation of the
contaminated groundwater is complete. _,
Further fieldwork (soil samp-ling) was conducted in November 1986, and a
final RI report was accepted by TWC and EPA on May 1, 1987. A final
draft FS report was submitted in December 1987. This FS report provides a
comparison of the potential remedial alternatives for the groundwater.
Geology
The Odessa Chromium I site is located on the southern edge of the Texas
High Plains region. The surficial soil in the site area is principally
Amarillo loam. Generally, it is fine sandy loam which ranges in depth
from 8 to 10 inches. Below that, to depths from 18 to 24 inches, the
subsoil is fine sandy loam to sandy clay. Pleistocene windblown sand,
clay deposits and alluvium deposits underlie the soil section. Beneath
the Pleistocene are 25 to 35 feet of caliche deposits which can be-
relatively impermeable in local areas* " ' "
Underlying the caliche are scattered erosional remnants of the Ogallala
formation composed of gravels, sands, silts and clays. This formation
does not generally extend to depths below 75 feet In the area.
The Trinity formation, the main fresh water producing aquifer in the
area, underlies the Ogallala interval. The thickness of this formation
ranges from 55 to 70 feet. It is composed of sands and sandstones with
minor amounts of siltstone, clay and gravel. Beneath the Trinity formation
is the Dockum Group of Triassic age which serves as an effective aquiclude.
The upper unit of the Dockum Group, the Chinle Formation, consists of up
to 600 feet of clays and shales which prevents downward migration of
contaminants.
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The hydrologic units containing potable water in the site area are the
Ogallala formation at approximately 70 feet below the area and the Trinity
sand at approximately 90 feet below the site (Figure 2). In general, the
Ogallala is hydrologically connected with the underlying Trinity and has
little or no saturated thickness. A few miles to the southwest the Ogallala
has been totally eroded and within the site area is only a thin remnant
containing little water. Groundwater occurs beneath the site mainly in the
Trinity Sand. Groundwater within this unit moves in a generally northern
direction at 50-100 feet per year.
Remedial Investigation Results
During the RI for the Odessa Chromium I site, samples were collected from
soil, groundwater, and air to determine the nature and extent of contamination,
The primary emphasis for analytical testing was placed on determining the
presence of chromium. Chromium testing was conducted for the shallow and
deep soil borings and from water samples collected during an inventory of
existing wells and from monitor wells completed during the investigation.
Additional chemical testing for zinc, copper, nickel and lead was performed
for selected samples. Table 1 shows the maximum level detected for each of
these contaminants for each media sampled during the RI.
Analytical results of the soil samples collected from the site indicate
that elevated levels of chromium are present at 4318 Brazos Street. The
contamination is generally limited to the upper 6 feet of soil with levels
up to 4,997 ppm total chromium. The estimated volume of chromium contaminated
soil exceeding near background conditions (50 ppm total chromium) is 1,200
yd3. The chromium present in the soil is predominately (95-99%) in the
trivalent state. Trivalent chromium adsorbs well to soil and therefore
does not leach out. This is confirmed by the EP Toxicity results (Table
2). EP Toxicity levels less than 5 mg/1 for total chromium are considered
acceptable by EPA.
Over 200 wells were.identified within a one-half mile radius of the site,
of which more than 150 were sampled and analyzed for total'and hexavalent
chromium. Of the wells sampled, 12 were found to exceed the Federally
regulated drinking water standard for chromium of 0.05 mg/1. In addition,
14 wells were installed within the Trinity aquifer during the remedial
investigation. Of the monitoring wells, 4 contained chromium levels which
significantly exceeded the drinking water standard. Figure 3 depicts the
estimated extent of chromium contamination in the Trinity aquifer which
exceeds the current chromium Drinking Water Standard of 0.05 mg/1.
Contamination levels are highest in the upper part of the Trinity aquifer
(72 mg/1) and are very low in the lower portion of the aquifer (0.01 mg/1)
in the vicinity of 4318 Brazos. A siltstone layer divides the Trinity
at this location; however, this dividing layer is discontinuous to the
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LAND SURFACE
SOIL, WINDBLOWN SAND, ALLUVIUM
20
i
40
CALICHE
60 -
SAND AND GRAVEL, OGALLALA
5
*
80 -
100 -
120 -
140 I—
^ r—GROUND WATER
V t (~60tDaS'l
TRINITY SAND
(MAINLY SAND WITH VARYING
DEGREES OF CEMENTATION)
CHINLE FORMATION
(RED CLAYS WITH INTERSPERSED SANDS)
RGURE 2.
GENERALIZED STRATAGRAPHIC SECTION
REMEDIAL INVESTIGATION
ODESSA CHROMIUM I SfTE
ODESSA,TCXAS
PB£P*«6D FOB
TEXAS WATER COMMISSION
AUSTIN, TEXAS
EF3 /R4A/HOWELL
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TABLE 1
SUMMARY OF SAMPLING
MEDIA
GROUNDWATER
SOIL
SEDIMENT
AIR
BUILDING
(4318 Brazos)
COMPOUND
Chromium
Nickel
Zinc
Chromium
Nickel
Zinc
Copper
Lead
Chromium
Nickel
Zinc
Copper
Lead
Chromium
Chromium
Nickel
Zinc
Copper
Lead
MAXIMUM CONCENTRATION
72 mg/1
0.3 mg/1
1.8 mg/1
(2)
4,977 ppm (75 ppm)
7,027 ppm
1644 ppm
488 ppm
331 ppm
1,440 ppm
7,200 ppm
580 ppm
104 ppm
800 ppm
0.1 ug/m3
46,532 ppm (2)
(4200 ppm)
121 ppm
303 ppm
228 ppm
67 ppm
(1).
AVERAGE VALUE
9.12 mg/1
0.25 mg/1
0.25 mg/1
421 ppm
438 ppm
72 ppm
88 ppm
114 ppm
979 ppm
4,647 ppm
362 ppm
93 ppm
529 ppm
0.06 ug/m3
34,201 ppm
121 ppm
303 ppm
228 ppm
67 ppm
(3)
(1) Concentrations are for total metal.
(2) Value in parenthesis is for hexavalent chromium.
(3) Does not include not detectable levels (ND)
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TABLE 2
LEACH TEST RESULTS
*
SAMPLE TOTAL CHROMIUM (ppm) . EP TOXICITY (MG/L)
B-108/-112 180 0.3
B-109 2460 1.3
B-122 2941 4.6
B-123 4977 1.7
Cinderblock
(4318 Brazos) 46,532 535
* EP Toxicity limit for total chromium is 5.0 mg/1
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4.Cr.ND 1 I Ex irtrnrtr-o
f 14
MOfllTOM
WATER
CHROMIUM LIMITS
NO NOT DETECTED
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north where contamination water is found throughout the entire Trinity
section. The plume of chromium contamination has migrated approximately
1300 feet down gradient of the 4318 Brazos property. An estimated 15,000,000
gallons exceed the current chromium standard.
Two smaller plumes have been discovered at 38th and 39th Streets just
west of West County Road and at West 42nd Street near Loop 338. Neither
plume was included in this study; however, the Agency will review the
information collected at these locations to determine if further
investigations are warranted.
Surface sediment samples were collected at three locations at the 4318
Brazos property. The samples contained up to 1440 ppm chromium. The
detection of chromium in the sediment indicates surface runoff may have
resulted in transporting contamination off-site by solution or particulate
matter.
Air monitoring was conducted during drilling activities at the site.
The difference between the upwind and downwind samples were 0.08 mg/m .
Based on the sample results, air quality at the site has not been
significantly degraded as a result of the surface contamination present
at the site. However, any future excavation of contaminated soil,
especially during windy conditions, might pose a health risk to worker or
nearby residents.
Samples were scrapped from the exterior of the northern surface of the
building at 4318 Brazos. This building was visably contaminated.
Chromium levels present in the cinderblocks are as high as 46,532 ppm.
Leaching of chromium from the building was detected at 535 mg/1. This
exceeds the EP Toxicity limit by a factor of 100.
Potential Impact of Site on Human Health and the Environment
The contaminant of greatest concern at the site (chromium) was chosen
from the compounds detected based on its widespread distribution through-
out the contaminated groundwater plume as well as its relative toxicity
and concentration. A risk assessment was conducted based on the chromium
concentration found at the site, assuming no remedial action would be
conducted. The first step in the risk assessment required the identifi-
cation of potential receptors. Target receptors identified in the
assessment include:
• Residents in trailers and homes utilizing contaminated
groundwater,
• Employees of businesses utilizing contaminated groundwater, and
• Workers or trespassers at the 4318 Brazos property.
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In order to evaluate what endangerment, if any, is currently created by
the site, contaminant levels present were compared with existing standards
or risk estimates were developed for potential exposure scenarios which
have no existing health-based standards. If a standard exists, the chromium
level was compared with the standard in order to determine whether a remedial
response action is necessary to protect human health and the environment.
If no applicable or relevant and appropriate standard exists, a target
concentration or cleanup level was developed which would attain a 10
(one in one million) to 10~b (ten in one million) lifetime cancer risk
level.
The majority of the contamination in the groundwater beneath 4318 Brazos
is confined to the Upper Trinity; however, the confining layer is not
continuous throughout the entire study area. Since chromium has an appli-
cable or relevant and appropriate requirement for groundwater, the EPA
Primary Drinking Water Standard, that requirement was used as the basis for
the target concentration. Wells with values above drinking water standards
are not suitable for use as a lifetime drinking water supply. The drinking
water standard of 0.05 mg/1 chromium is exceeded by numer'ous well.s throughout
the site. This standard is currently under review by EPA. Should the
standard be revised prior to implementing the design phase of the project,
the revised standard will become the target concentration. Otherwise, the
current standard will continue to be considered the appropriate level of
remediation.
Based on the risk assessment conducted during the Feasibility Study, neither
ingestion of contaminated soils nor inhalation of contaminated dust particles
pose a significant threat to human health. Ingestion of the chromium present
in the soil is 5.28% of the oral chronic acceptability daily intake for
chromium. The risk associated by the inhalation of dust particles from the
site approaches a 10 (one in one million) risk level (corresponds to a
0.75x10 ug/nr concentration); therefore, soil remediation is not considered
necessary.
Results of the risk assessment indicate that remedial action is required to
reduce the potential for exposure through the consumption of contaminated
groundwater only. The Agency for Toxic Substances and Disease Registry
(ATSDR) supports this interpretation of the risk assessment (Attachment B).
II. ENFORCEMENT
The goal of the EPA is to have those parties responsible for contamination
of the site perform the cleanup. The Agency has identified several
potentially responsible parties at the Odessa Chromium I site. These
parties have been notified that they may undertake, or participate in, the
chosen remedy. If they decline involvement in the remedial action, EPA
will pursue appropriate enforcement action.
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III. COMMUNITY RELATIONS HISTORY
See Attachment C.
IV. ALTERNATIVES EVALUATION
Evaluation Criteria
Section 121 (a) through (f) of the Superfund Amendments and Reauthorization
Act contains factors which EPA must consider in selecting a remedy for a
Superfund site. These factors, as well as other criteria used during the
evaluation of alternatives, are discussed below:
1. Consistency with Other Environmental Laws
In determining appropriate remedial actions at Superfund sites,
consideration must be given to the requirements of other Federal
and State environmental laws. Primary consideration is given to
attaining applicable or relevant and appropriate Federal and State
public health and environmental regulations and .standards. Require
ments under Federal or State laws that specifically address the
circumstance at a Superfund site are considered applicable-Relevant
and appropriate requirements, while not "applicable" to a Superfund
site, address situations which are sufficiently similar to a site.
The compliance of each remedial alternative with all applicable or
relevant and appropriate environmental laws is shown in Table 3.
- 2. Reduction of Toxicity. Mobility or Volume
The degree to which alternatives employ treatment which reduce
toxicity, mobility, or volume must also be assessed. Relevant
factors are:
o The treatment processes the remedies employ and materials they
will treat;
•
o The amount of hazardous materials tn-at'will be destroyed or
treated;
The degree of expected reduction in toxicity, mobility, or
volume;
o The degree to which the treatment is irreversible;
o The residuals that will remain following treatment, considering
the persistence, toxicity, mobility, and propensity for bio-^
accumulation of such hazardous substances and their constitu-
ents.
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7
EPA is also directed by SARA to give preference to remedial actions
that utilize treatment to remove contaminants from the environment.
Off-site transport and disposal without treatment is the least
preferred option where practicable treatment technologies
are available.
3. Short-term Effectiveness
The short-term effectiveness of alternatives must be assessed;
considering appropriate factors among the following:
• Magnitude of reduction of existing risks;
• Short term risks that might be posed to the community, workers,
or the environment during implementation of an alternative
including potential threats to human health and the environment
associated with transportation, and redisposal or containment
of treatment residuals.
• Time until full protection is achieved.
4. Long-term Effectiveness and Permanence
Alternatives are assessed for the long-term effectiveness and
permanence they afford along with the degree of certainty that'
the remedy will prove successful. Factors considered are:
• Magnitude of residual risks in terms of amounts and concentrations
of waste remaining following implementation of a remedial
action, considering the persistence, toxicity, mobility, and
propensity to bioaccumulate of such hazardous substances and
their constituents;
t Type and degree of long-term management required, including
monitoring and operation and maintenance; :
o Long-term reliability of the engineering and institutional
controls, including uncertainties associated with land disposal
of untreated wastes and residuals;
• Potential need for replacement of the remedy.
5. Implement ability.
The ease or difficulty of implementing the alternatives are
assessed by considering the following types of factors:
-------
3
• Degree of difficulty associated with constructing the technology;
• Expected operational reliability of the technologies;
• Need to coordinate with and obtain necessary approvals and
permits from other offices and agencies;
• Availability of necessary equipment and specialists;
• Available capacity and location of needed treatment, storage,
and disposal services.
6. Cost
The types of costs that should be assessed include the following:
• Capital cost;
t Operation and maintenance .(0&M) costs;
• Net present value of capital and O&M costs;
• Potential future remedial action costs.
7 . Community Acceptance , - -
This assessment should look at: "~~
• Components of the alternatives which the community supports;
• Features of the alternatives about which the community has
reservations;
• Elements of the alternatives which the community strongly
opposes.
• •
8. State Acceptance
Evaluation factors include assessments of:
t Components of the alternatives which the State supports;
• Features of the alternatives about which_the State has reserv-
at ions;
0 Elements of the alternatives under consideration that the ^
State strongly opposes. nr_~~_ T "."~r.r_I7_i
-------
9. Overall Protection of Human Health and the Environment
Following the analysis of the remedial options against individual
evaluation criteria, the alternatives are assessed from the stand-
point of whether they provide adequate protection of human health
and the environment considering the multiple criteria.
Description of Alternatives
In conformance with the National Contingency Plan, initial remedial approaches
were screened to determine which might be appropriate for this site. From
these possible remedies, six alternatives were chosen for more detailed
evaluation and comparison with the remedy selection criteria outlined above.
Each is summarized below:
Alternative 1, No Action - This remedy involves primarily the plugging
of several monitor wells used during the remedial investigation. Nine
existing wells and five new wells will be utilized for an annual
monitoring program. This alternative does not prevent future migration
of chromium and does not clean up the existing contamination. In order
to prevent potential exposure through future consumption of contaminated
groundwater the alternate water supply system would require continued
extension as the plume migrates past the present site boundary. The
associated present worth cost ($158,000) of this alternative is for
constructing new wells and an annual monitoring program. .
All five of the remaining alternatives require the removal and off-site
disposal of a highly contaminated cinderblock building at 4318 Brazos
(Fig 4). Removal of the building is necessary to provide adequate space
for potential utilization of the property during the remedial action as
well as to eliminate the future risk associated with the improper handling
and disposal of the chromium contaminated building materials. The building
will be demolished in a manner which will minimize pulverization of the
bricks thereby reducing extensive generation of chrome laden dust and
disposed of at a permitted hazardous landfill facility. In addition,
five wells (MW-107, -109, -104, -110, -114) installed during the Remedial
Investigation will be plugged so as not to create a pathway for additional
contamination of the groundwater. To the extent possible, groundwater
will be monitored using remaining existing wells.
Alternative 2, Containment Wall - This alternative is comprised of
installing overlapping 2-3 foot thick grout columns within the Trinity
aquifer. The columns will be spaced three (3) feet apart thus creating
a barrier wall around the contaminated groundwater. The barrier would
limit the migration of the plume thereby reducing the number of water
wells from the potential danger of contamination. Although the contain-
ment wall would be located in areas which would minimize the disruption
-------
STORAGE SLOG
1 — —
M
u
z
UJ
te
It
— I—-
NOLL
DRILLING
' ws,)
APPROX.
LOCATION
7
PAH KING AREA
44 !£. ST
— LEG END
EXIST. HATER WELL
MONITOR WELL
ACTIVE MUUN FiELC
AtANOOMED DRAIN
FIELD
MW 112 UW III
MW-II4
SEPTIC TANK —*O
43l| MAZOS
OIL
WELL
EX.00
STORAGE
GARAGE
EX-100 IS PUJMGD
fENCE
CURRENT SITE CONDITIONS
4318 BRAZOS
REMEDIAL INVESTIGATION
ODESSA CHROMIUM (SITE
ODESSA, TEXAS
JUNK AUTOS
MPT
TEXAS WATER COMtSSttN
^^ AUSTIN, TEXAS
CO / R8A / HOWELL
-------
10
of paved streets and property, the entire plume which exceeds 0.05 mg/1
total chromium could be effectively contained by the 3 foot thick wall.
The length of the barrier wall will be approximately 5,500 feet. Recovery
wells would be installed to remove water from the interior of the contain-
ment wall so that the interior water level is lower than the surrounding
aquifer. The inward gradient would reduce the potential for contaminants
to migrate beyond the wall. Construction of the wall is expected to
last 4 years. The estimated present worth cost for this alternative is
$24,218,000, including 30 years of monitoring.
Alternative 3, Ion Exchange - A central ion exchange system would
be used to reduce the hexavalent chromium levels present in the
groundwater to levels of at least 0.05 mg/1. Since an ion exchange
system is relatively simple to operate, the operator's time can be
substantially reduced by automating a central unit. Individual
units would be labor intensive since, for proper operation, an
operator would have to constantly monitor the performance of each
unit. Low volumes of sodium chromate would be generated during
the treatment process, thus requiring disposal at a permitted,
off-site disposal facility. Treated groundwater will be injected
into the aquifer at locations upgradient from the contaminated
plume. In order to remediate the groundwater within 10 years,
four extraction wells pumping at 8 gpm and two injection wells at
16 gpm are required. Six extraction wells (10 gpm) and three
injection wells (20 gpm) are required to treat the groundwater
•within 5 years. Construction is expected to last up to 5 months.
The 10 year present worth implementation cost is $3,706,000. If
the groundwater"is treated for 5 years the cost is $3,382,000
including disposal cost. The annual operation and maintenance
cost are included in the implementation cost.
Alternative 4, Chemical Treatment - The contaminated groundwater
will be treated with sodium bisulfate in order to chemically reduce
the hexavalent chromium into trivalent chromium. The chromium would
.then be precipitated from the groundwater in the form of chromium
hydroxide. When the remedial action has been completed, the ground-
water concentration could be at or below 0.05 mg/1 for chromium.
The same number of extraction/injection wells previously discussed
in Alternative 3 are required for the chemical treatment process.
Theoretically, the sludges produced during the treatment process may
be considered non-hazardous; however, laboratory testing of the sludge
will be required for verification. Should laboratory testing confirm
the sludge contains trivalent chromium, rather than hexavalent, the
sludge may be disposed in a non-hazardous disposal facility; other-
wise, the sludge will be disposed at a permitted facility. The
entire treatment system could be erected inside an enclosure to
prevent tampering of the equipment. Construction of the treatment
system is expected to last 5 months. The 10 year present worth
cost is $4,801,000 including operation and maintenance. $3,760,000
has been estimated for the 5 year year option.
-------
-------
11
Alternative 5, Electrochemical Treatment - This system is similar to
the chemical treatment system (Alternative 4); however, an electric
current, rather than sodium bisulfite, allows for the reduction of
chromium from the hexavalent state to the trivalent state. The
volume of the treatment sludge (ferric and chromic hydroxide)
precipitated with this alternative is greater than the volume produced
during the chemical treatment system. The sludge that is produced
may be non-hazardous. The non-hazardous characteristics of this
sludge can only be ascertained by performing extraction procedures
toxicity test on the sludge during the remedial action. As with
Alternative 4, the results of the laboratory testing will determine
the proper disposal method for the treatment sludge. The duration
of constructing this system is estimated at 5 months. A cost of
$3,315,000 and $2,836,000 has been estimated for the present worth
cost of the 10 and 5 year options, respectively.
Alternative 6, Ion Exchange - This option is similar to Alternative
3; however, the.level of remediation will be 0.12 mg/1 rather than
0.05 mg/1. The purpose for developing a treatment alternative which
does not remediate the groundwater to the current drinking water
standard is to provide the relative cost difference in remediating
the site should the maximum contaminant level (MCL) be revised prior
to designing the treatment system. The present worth cost of the
remedy is $3,402,000 for the 10 year option and $2,948,000 for the 5
year option, including operation and maintenance cost.
Evaluation of Alternatives
The degree that the six remedial alternatives meet the nine selection criteria
is contained in Table 4. The following values were assigned to compare
remedial selection criteria:
+ Alternative would exceed a criterion in comparison to other
alternatives.
• Alternative can be designed to meet the selection criterion.
- In comparison to other remedies, these alternatives would present
the most difficulty in achieving a selection criterion.
The rationale for the ratings assigned to this table is as follows:
1. Complies with ARARs
Compliance with ARARs is achieved by Alternatives 3,4 and 5.
These treatment alternatives are capable of attaining the Federally
Regulated Primary Drinking Water Standard for chromium. The No
-------
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-------
12
Action, Containment Wall, and the 0.12 mg/1 Ion Exchange alternatives fl
(1,2 and 6-) do not comply with all ARARs since these options do
not remediate the contaminated groundwater to the present MCL.
2. Reduces: Mobility, Toxicity. and Volume
a. No Action was rated "-" because it does nothing to reduce
any of these parameters.
b. Containment Uall received a "+" for mobility since it would
effectively reduce further migration of the contaminants as
long as the wall is properly maintained. The wall would not
reduce the toxicity or volume of the contaminated groundwater,
therefore these parameters received "-".
c. Ion Exchange, Chemical Treatment, and Electrochemical Treatment
(Alternatives 3,4,5, and 6) all were rated "+" for reductions
in mobility and toxicity. Each of these remedies either
remove hexavalent chromium from the groundwater or reduce
the hexavalent chromium to trivalent chromium which is less
mobile and less toxic. Although the treatment alternatives
are capable of removing the chromium from the groundwater,
alternatives 3,4,5, and 6 received "0" for reduction in
volume since the removal of chromium would not reduce the
volume of the chromium waste, groundwater.
3. Short Term Effectiveness
The No Action option was rated "-" since, although protection from
short-term exposure through ingestion would be provided by the
alternate water supply, there would still exist a potential for
consumption of contaminated groundwater. The inhalation risks
associated with the extensive drilling required for installing
the containment wall resulted in.the option receiving a "-".
Both the ion exchange alternatives were rated "0" when compared
with the chemical and electrochemical systems which received "+"
because the ion exchange units produce a hazardous sludge whereas
the other systems may result in a non-hazardous treatment sludge.
The sludge from the ion exchange units may pose a short threat
to human health and the environment should an accidental spill
occur during transport to a disposal facility.
4. Long Term Effectiveness and Permanence
Since chromium levels will remain above the primary drinking water
standard, the No Action alternative was rated "-". The containment
remedy was assigned a "0" because, although contained, the ground-
water inside the barrier remains unfit for human consumption.
-------
13
The containment barrier also has the potential of a breakthrough.
Thus, its permanence relative to the treatment remedies is question-
able. Alternative 4, Chemical Treatment, effectively reduces
the level of chromium in the groundwater to the Primary Drinking
Water Standard; however, the system will also increase the level
of dissolved solids in the groundwater. Although an increase in
dissolved solids is not a health threat, it does effect the
secondary quality (taste, color and odor) of the water; therefore,
the alternative was rated "0". All of the remaining treatment
alternatives (3,5 and 6) receive a "•*•" since all chromium above
the assigned cleanup criteria is removed without effecting
the quality of the groundwater.
5. Implementability
The No Action alternative is relatively easy to implement since it
involves installing new monitor wells and plugging some existing
wells.. The containment wall will be very difficult to implement due
to the extensive drilling required to install the wall. The duration
of the drilling activities is estimated at 4 years; therefore,
Alternative 2 received a "-" for implementability. The treatment
remedies were assigned "0". The treatment technologies considered
for the site are not innovative and a standard system design may be
used. Construction and operation of these systems, while not simple,
would not be as difficult to implement as the containment barrier
option.
6. Cost
The present worth cost of each alternative includes capital cost,
annual remediation operation and maintenance, annual post closure
operation and maintenance, 5-year review cost, and replacement cost.
Annual remediation operation and maintenance cost and replacement
cost were calculated for the duration of the 5 and 10-year treatment
remedy or 30 years for either the containment and no action altern
atives. The cost difference associated with a level of remediation
(0.12 mg/1) greater than the current MCL (0.05 mg/1), is $400,000
for the 5-year ion exchange option and $300,000 for the of the
10-year ion option. The difference in cost is due to the number
of extraction wells and the rate at which these wells produce.
The cost of the treatment system is similar at either level of
remediation.
7. Community Acceptance
The community neither endorsed nor opposed any of the remedial actions
presented during the public meeting. However, its unlikely the
citizens impacted by the site would support either a No Action or
-------
containment remedy since the chromium would not be removed from
their only source of drinking water.
8. State Acceptance
The State (Texas Water Commission) has concurred with the Electro-
chemical Treatment process for the remediation of the chromium
contaminated groundwater at the Odessa Chromium site.
9. Overall Protection of Human Health and the Environment
A rating of "-" was assigned to the No Action alternative because
this option does not provide for any reduction of exposure to
contaminated groundwater. The water will remain contaminated at
levels in excess of the present drinking water criteria. Containing
the contaminated water, Alternative 2, is effective in protecting
human health and the environment as long as the grout barrier 1s
properly maintained. Although unlikely, breakthrough of the wall
may occur thus releasing the contaminated groundwater. Due to
the potential increased risk caused by failure of the barrier,
Alternative 2 received a "0". The treatment options received
the highest rating of "+". These alternatives are highly effective
since no chromium above the respective action levels will remain
in the groundwater following remedial action.
V. SELECTED REMEDY: Electrochemical Treatment
Rationale
Based on the information available to evaluate the six remedial options
against these nine criteria, EPA has concluded that Alternative 5,
electrochemical treatment of the groundwater for five years is the Agency's
preferred alternative. A treatability study will be conducted during
the design phase of the project. The results of this study will aid in
designing an appropriate treatment system. The five year duration option
will be used rather than the ten year option due to the high O&M cost
associated with the 10-year option. This alternative is protective of
human health and the environment, attains all applicable or relevant and
appropriate Federal and State requirements, and is cost-effective.
Additionally, because the alternative employs electrochemical treatment
to eliminate the principal threat (chromium greater than 0.05 mg/1 or
the MCL promulgated prior to design), it also satisfies SARA's preference
for remedies which employ treatment, as their principal element to reduce
toxicity, mobility, or volume.
The site will be monitored for a period of at least 30 years (post closure
time period stipulated under RCRA) to ensure that no significant contamination
-------
15
migrates from the site. If, however, future migration does occur, appropriate
remedial actions will be evaluated.
Operation and Maintenance (O&M)
Site operation and maintenance will be minimal following remedial action
since the chromium levels in the groundwater will be below the drinking
water standard. Wells will be monitored annually to ensure chromium
levels remain below the clean-up criteria. The State of Texas will assume
responsibility for operation and maintenance of the site. EPA will pay
90% of the cost until the remedy attains the clean up criteria. Following
remediation, the State of Texas will perform annual monitoring for, at
least, the remaining duration of the 30 year monitoring period.
Future Actions
No future actions are anticipated. The electrochemical treatment alter-
native is considered permanent. If, however, significant unforeseen
off-site migration or contamination occurs as a result of the site,
measures will be implemented to remediate the situation.
Remedial Action Schedule
Approve Remedial Action (sign ROD) March 1988
Complete Enforcement Negotiations June 1988
Award Cooperative Agreement Amendment August 1988
for Design of Approved Remedy
Start Design October 1988
Complete Design August 1989
Award Remedial Action Cooperative October 1989
Agreement Amendment for Construction
of Approved Remedy
Start Construction January 1990
Complete Construction January 1991
Complete Groundwater Treatment January 1996
-------
ATTACHMENT A
ADMINISTRATIVE RECORD INDEX
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: . Odessa Chromiun I
Job Nunber: T27C
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
11/16/77
Memo & Report
Robert Bradshaw
TDWR
George Green
TDWR
Investigation of 'E.M. Cassity' Complaint
19
1
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
OV17/78
Memo & Report
Jerry Phillips
TDWR
Dan Havelka •
TDWR
Additional info. 'E.M. Cassity1 Complaint
M8
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
03/13/80
Report
Jerry Phillips
TDWR
Gary Schroeder
TDWR
Report on alleged Cr contamination
7
3 . ' '
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
10/2M/80
Letter
C.R. Miertschin
TDWR
Ground Water Investigation
3
-------
ADMINISTRATIVE RECORDS INDFX
J'ob Name: Odessa Chromium I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
01/17/83
Memo
Gary Raven
TDWR
Susan Ferguson
TDWR
Site Investigation Report
3
5
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
01/25/83
Report
Texas Water Quality Board
TDWR'
Lab results water samples
47
6
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
02/07/83
Memo
Gary Schroeder
TDWR
William Lockey
TDWR
Request for additional information
1
7
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
06/02/83
Report
TDWR
TDWR
Water well sampling report with map
6
8
-------
ADMINISTRATE F
Job Name: Odessa Chroniun I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
07/07/83
Memo
John Middleton
TDWR
Rod Kimbro
TDWR
Continuation of site investigation
8
9
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
09/02/83
Plan
U.S. E.P.A. & TDWR
RCRA - QAPP
68
10
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence.
09/09/83
Report
U.S. E.P.A.
File
Site Inspection Report
10
11 :
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
09/09/83
Memo
Joan Middleton
TDWR
Bob Chapin
TDWR
Cost estimate of extending city water lines
1
12
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chronium I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
09/27/83
Record of Ccranunication
Bill Davis
U.S. E.P.A. (6W-SP)
File Odessa Chromium
Discussion of Cr Standard
1
13
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
09/29/83
Record of Communication
Meeting with Charlie Gazda, Dwight Hoenig,
Jeff Gilley,' Bill Davis
Minutes of Meeting concerning Cr contamination
1
14
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of 'Pages
Document Number Sequence
10/03/83
Memo
Joan Middleton
TDWR
Rod Kimbro
TDWR
Analysis of 2 soil samples
13
15
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
10/12/83
Letter
William Lockey
TDWR
Ken Howard
Odessa Resident
Notice of Contaminated Well
1
16
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Number: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
11/04/83
Letter
Bobby Tucker
Odessa Director of Public Works
Gary Schroeder
TDWR
Inquiries from City
2
17
Document Date
Document Type
Originator
Originator'- Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
11/10/83
Letter
Charles Nemir
TDWR
Dick Whittington
U.S. E.P.A. - Regional Administrator
Request for state handling of site
2
18
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
11/15/83
Letter
Susan Harmons
The Odessa American
Rod Kimbro
TDWR
Request for Information
1
19
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
11/25/83
Memo
William Hathaway
U.S. E.P.A.
Dwight Hoenig
U.S. E.P.A.
Brine contamination in wells
1
20
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
04/20/84
Trip Report
Kelly Nash
U.S. E.P.A. (6AW-50)
Russell Hartley
U.S. E.P.A. (6AW-50)
Site review and public impact of contamination
3
21
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
04/25/84
Record of Communication
Joan Middleton
TDWR
Rod Kimbro
TDWR
Discussion of meeting and water supply proposals
1
22
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
06/05/84
Letter
Bryan Dixon
TDWR
Samuel Nott
U.S. E.P.A.
Proposed water supply system
.1
23
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
06/26/84
Telephone Memo
Bill Karnes
TDWR
Charles Faulds
TDWR
Discussion of well casing
1
24
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium, I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
06/27/84
Telephone Memo
Bop Chapin
TtWR
Charles Faulds
TDWR
Discuss Plugging Wells
1
25
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
12/10/84
Request
TDWR
Texas Register
Request for Proposals
1
26
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
01/11/85
Trip Report
Beth Fentrup
U.S. E.P.A. (6AW-ST)
Files
Odessa Chromium I & II
Discussion of investigation procedures
1
27
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
01/14/85
Record of Communication
Beth Fentrup
U.S. E.P.A. (6AW-ST)
Greg Tipple
TDWR
RI/FS Process Comments
1
28
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromlum^I
Job Nunber: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
02/15/85
Record of Communication
Beth Fentrup
U.S. E.P.A. (6AW-ST)
Greg Tipple
TDWR
Discussion of IRM & work plans
1
29
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
02/21/85
Record of Communication
Beth Fentrup
U.S. E'.P.A. (6AW-ST) •
Greg Tipple
TDWR
Discussion concerning work plan
1
30
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
02/27/85
Presentation
IT Corporation
TDWR
Presentation § TDWR
26
31
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
04/09/85
Letter
Robert Newton
IT Corp.
Greg Tipple
TDWR
Response to comments on 3/20/85 draft
3
32
-------
vr
Job Name: Odessa Chromium I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
04/16/85
Record of Communication
Steve Muse
U.S. E.P.A. (6AW-ST)
File
Odessa I & II
Inadequacy of work plan
1
33
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
04/18/85
Analyses
Rodney Lewis
Colorado River Municipal Water Dist.
John Middleton
TDWR
Analyses for 3 wells
4
34
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number, of Pages
Document Number Sequence
04/19/85
Report
IT Corporation
U.S. E.P.A. & TDWR
Meeting Presentation
26
35
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
04/29/85
Subcontract
Robert Newton
IT Corp.
Greg Tipple
TDWR
IT Subcontract Agreement (Std.)
7
36
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chroniun I
Job Nunber: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
05/15/85
Letter
Robert Newton
IT Corp.
Greg Tipple
IT Corporation
Comments on Draft Contracts
2
37
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
05/28/85
Letter
Carlene Chambers
U.S. E;P.A. (6AW-SS)
Charles Faulds
TDWR
Authorization to begin RI
1
38
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
06/01/85
Exhibit
TDWR
Final scope of work remaining FS
11
39
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
06/05/85
Contract
Charles Nemir
TDWR
Jean Kissenpfennig
IT Corporation
Consultant Contract
81
MO
-------
RF.TORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
06/18/85
Plan
William Colbert
TDWR
Carlene Chambers
U.S. E.P.A.
Community Relations Plan
23
41
Document Date
Document Type
Originator
Originator -.Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
06/20/85
Record of Communication
Steve Muse
U.S. E.P.A.
File
Developments concerning use of contaminated water
2
42
07/17/85
Memo
Ernest Heyer
TDWR
Greg Tipple
TDWR
Discussion of Quality Assurance Project Plan
2
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
07/18/85
Report
Robert Newton
IT Corporation
Greg Tipple
TDWR
Progress Report No. 1
2
44
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Qdeasa Chronium I
Job Nunber: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
07/19/85
Memo
Charles Nemir
TDWR
TDWR Staff
Announcement of Public Meeting
1
45
Docunent Date
Docunent Type
Originator
Ofiginator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages .
Docunent Nunber Sequence
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
08/01/85
Transmittal Letter
Greg Tipple
TDWR
Robert Newton
IT Corp.
Comments to Sampling Plan
3
46
08/02/85
Memo
Matt Tokheim
TDWR
Greg Tipple
TDWR
Current use of contaminated wells
3
47
08/08/85
Record of Communication
Robert Forrest
U.S. E.P.A. (6ES-Q)
Steve Muse
U.S. E.P.A. (6AW-ST)
Changes to QA Project Plan
11
48
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Qdessa Chromium I
Job Nunber: T27Q
Docixnent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
Document Date
Document Type
Originator
Originator - "Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Docunent Nunber Sequence
Docunent Date'
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
08/08/85
Memo
Betty Jean Reece
U.S. E.P.A. (6AW-SS)
Files
Questions posed by residents
1
08/13/85
Telephone Memo
Greg Tipple
TDWR
Charles Gazda
U.S. E.P.A.
Discussion of ground water use survey
1
50
08/1V85
Record of Communication
Steve Muse
U.S. E.P.A. (6AW-ST)
Charles Gazda
U.S. E.P.A. (6E-E)
Continued use of contaminated wells
1
51 • :
08/16/85
Legal Descriptions
Robert Newton
IT Corp.
Greg Tipple
TDWR
Odessa Legal Descriptions
5
52
-------
Job Name: Odessa Chrgniim I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/22/85
Request
Robert Newtott
IT Corp.
Public
Request for drilling proposals
20
53
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence.
08/22/85
Letter
Carlene Chambers
U.S. E.P.A. (6B-HO)
Bryan Dixon
TDWR
Investigation Objectives
3
5M
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/23/85
Letter
Bryan Dixon
TDWR
Al Husak
IT Corporation
Approval of QAPP and Health & Safety Plan
2
55 :
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
08/26/85
Letter
Bryan Dixon
TDWR
W. R. Barnes
Agent for Nipco, Inc.
Access Agreement
4
56
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium 1
Job Number: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Docunent Number Sequence
08/26/85
Report
Robert Newton
IT Corporation
Greg Tipple
TDWR
Progress Report No. 2
2
57
Docunent Date
Docunent Type
Originator
-Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Docunent Number Sequence
08/27/85 '
Reference Publication
API
General
Corrosion of oil and gas well equip.
12
58
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Docunent Number Sequence
10/02/85
Letter
Charles Faulds
TWC
Robert Newton
IT Corporation
Water well access agreement
2
59
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Docunent Number Sequence
10/03/85
Transmitted Letter & Table
Robert Newton
IT Corp.
Greg Tipple
TWC
Table of Contaminated Water Wells
13
60
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Number: T27Q
i
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
10/09/85
Report
Robert Newton
IT Corporation
Greg Tipple
TWC
Progress Report No.
3.
61
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
10/10/85
Letter & Report
Greg Tipple
TWC
Steve Muse
U.S. E.P.A.
Initial results of water well
13
62
survey
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
10/1V85
Letter
Charles Faulds
TWC
W.A. Fields
Nipco, Inc.
Problems with access agreement
2
63 '
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
10/16/85
List
Robert Newton
IT Corporation
Greg Tipple
TWC
Legal descriptions for monitor well locations
11
64
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/16/85
Letter
Robert Newton
IT Corporation
Greg Tipple
TWC
Cost increases in drilling program
5
65
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/17/85
Table
Robert Newton
.IT Corporation
Greg Tipple
TWC
Table of Uncontaminated Water Wells
16
66
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/17/85
Letter
Charles Faulds
TWC
Charles Noll
Odessa Resident - Well Owner
Contaminated Well Report
2
67
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/17/85
Letter
Charles Faulds
TWC
RPM Motors
Odessa Business - Well Owner
Contaminated Well Report
2
68
-------
ADMINISTRATIVE RECORDS INDFX
Job Name: Odessa Chromiim I
Job Nunber: T27Q
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/17/85
Letter
Charles Faulds
TWC
James Kendall
Kendall Oil Field Maint.
Contaminated Well Report
2
69
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/17/85
Letter
Charles Faulds
TWC
David Lind
Anco Battery Co.
Contaminated Well Report
2
70
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
10/17/85
Letter
Charles Faulds
TWC
Kenny Burns
Odessa Resident
Contaminated Well Report
2
71
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/17/85
Letter
Charles Faulds
TWC
Bill Weaver
Spearman Radiator & Supply
Contaminated Well Report
2
72
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Docunent Nunber Sequence
10/17/85
Letter
Charles Fauluj
TWC
Dave Nunley
Texline
Contaminated Well Report
2
73
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/22/85
Letter & Plan
Robert Newton
IT Corp.
Greg Tipple
TWC
Clarification and QAPP
92
71
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of .Pages
Docunent Nunber Sequence
11/01/85
Memo —
Ernest Heyer
TWC —
Greg Tipple
TWC
Approval of OC & II QAPP
5
75
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
11/01/85
Report
IT Corporation
TWC & U.S. E.P.A.
Well Inventory - RI
28
76 _„
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
11/04/85
Letter
Charles Faulds
TWC
Al Husak
IT Corporation
Comments Sampling Plan
3
77
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
11/08/85
Letter
Charles Faulds
TWC
Gary Stewart
Odessa Well Owner
'No chromium detected1
2
78
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
11/08/85
Letter
Charles Faulds
TWC
Bill Palmer
Odessa Well Owner
'No chromium detected'
2
79
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
11/08/85
Letter & List
Charles Faulds
TWC
Mailing List Attached
Clean well owner mailing list
9
80
-------
JMTNTSTBATTVF RECORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
11/13/85
Letter
Charles Faulds
TWC
J.W. Morton and June Burnett
Odessa Well Owners
'0.03 mg/1 Cr Detected1
2
81
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
11/13/85
Letter
Charles Faulds
TWC
Clarence Arends
Highland Pump Co.
'0.03 mg/1 Cr detected1
.2
82
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
11/13/85
Letter
Charles Faulds
TWC
Weidon Houston
Compressor Components
•0.02 mg/1 Cr detected'
2
83
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
11/W85
Plan
IT Corporation
TWC
Sampling Plan - Rev. 2
51
84
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Qdessa Chroniun I
Job Nunber: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
11/1V85
Letter
Carlene Chambers
WEPA (6H-SS)
Charles Faulds
TWC
Comments on QAPP
2
85
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
11/15/85
Response Letter
Robert Newton
IT Corp.
Charles Faulds
TWC
Response to comments on sampling plan
86
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
11/15/85
Plan
IT Corporation
TWC
Health 4 Safety Plan - Rev. 1
60
87
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Docunent Nunber Sequence
11/21/85
Letter
Stephen Margolis
CDC
Carl Hickam
U.S. E.P.A.
Effects of Contamination
3
-------
ADMINISTRATIVE RECORDS T
Job Name: Odessa Chroniun I
Job Nunber: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
12/17/85
Record of Communication
Steve Muse
U.S. E.P.A. (6H-ST)
File
OC I OC II
Meeting on alternate water supply
1
89
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
01/07/86
Letter
Harry Little
ERM-Southwest
Greg Tipple
TWC
Request to measure well levels
1
90
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
01/16/86
Letter
Greg Tipple
TWC
Bonnie DeVos
U.S. E.P.A.
Disposal of boring soils
3
91
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
01/21/86
Letter
Greg Tipple
TWC
Harry Little
ERM Southwest, Inc.
Refusal of access request
2
92
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chropiiun I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
01/27/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No.
3
93
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
01/30/86
Exhibits
Alan Husak
IT Corp.
Steve Muse
U.S. E.P.A.
Exhibits 4 A thru D FFS
25
94
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
02/04/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No.
3
95
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
02/04/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No. 6
3
96
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
02/10/86
Letter
Greg Tipple
TWC
Robert Newton
IT Corporation
Comments on 'Scope of Work1
10
97
Document Date
Document-Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
02/10/86
Letter & Lab Reports
Robert Newton
IT Corp.
Greg Tipple
TWC
Request for waste code
17
98
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
02/12/86
Memo
Greg Tipple
TWC
File
Access Agreements with PRP's
8
99
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/06/86
Letter
Robert Newton
IT Corp.
Guy Swinford
ERM - Southwest, Inc.
Monitor well levels
1
100
-------
ADMINISTRATIVE RFCQRDS INDEX
Job Name: Odessa Chromium I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/10/86
Letter
Robert Newton
IT Corp.
Greg Tipple
TWC
Report on wells § Elm Trailer Court
1
101
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/11/86
Larry Soward
TWC
John Harrison
City Manager - Odessa
Discussion of water line extension
3
102
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/25/86
Report
IT Corporation
Public
"A Plan for an Alternate Potable Water Source"
15
103
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/25/86
Resolution
City of Odessa, City Council
Resolution No. 86R-22
1
104
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chronium I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/27/86
Memo & Attachments
Greg Tipple
TWC
Odessa Cr I File
Motion to Allow Wooley Tool Access to Wells
22
105
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
04/01/86
Report
I.T. Corporation
U.S. E.P.A. & TWC
Remedial Investigation - Draft
Vol. I i II
106
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
0V16/86
Record of Communication
Steve Muse
U.S. E.P.A. (6H-ST)
File OCI & II
Discussion of waterline extension
1
107
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
04/21/86
Transmittal Letter
Robert Newton
IT Corporation
Greg Tipple
TWC
Items, Rev. 2 QAPP
11
108
-------
ArMTNT<;TBATIVF RECORDS INDO
Job Name: flffrffiffi
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient -.Affiliation.
Description
Number of Pages
Document Nunber Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
05/16/86
Memo
Oscar Cabra, Jr.
U.S. E.P.A. (6W-S)
Carl Edlund
U.S. E.P.A. (6H-S)
Maintain 0.05 mg/1 standard
1
109
05/20/86
News Article
Odessa Newspaper
Public
"Water Contamination Suit Settled"
.1
110
05/28/86
Transmittal
Bob Monk
IT Corp.
Greg Tipple
TWC
Leach Test Results
5
111
06/01/86
Report
IT Corporation
TWC & U.S. E.P.A.
Alternative Water Supply Feasibility Study
112
-------
Job Name: fllffffffi ffllrrniiljn
Job Nunber: 1212
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Number Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
06/13/86
Memo
Greg Tipple
TWC
Bill Lockey
TWC
Additional ground water contamination
U
113
06/17/86
Letter
Robert Newton
IT Corp.
Greg Tipple
TWC
Comments-Extension of Water Mains
06/18/86
Laboratory Information
Robert Newton
IT Corp.
Greg Tipple
TVC
Lab Information & Sample Tracking
A
115
06/19/86
Letter
Robert Newton
IT Corp.
Greg Tipple
TWC
Contaminated well inventory sheets
22
116
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
06/27/86
Letter
Robert Newton
IT Corp.
Greg Tipple
TWC
Problems with focused FS
3
117
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
07/01/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No.
2
118
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
07/02/86
Telephone Memo
Patricia Curl
TWC
Randy Hogg
Lone Star Electric
Call concerning water quality
1
119
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
07/08/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No,
2
120
8
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: fltifi1?*3 Chrctniim
Job Nunber: T27Q
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Number Sequence
07/21/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No. 9
5
121
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Number Sequence
08/01/86
Report - Final
IT Corporation
TWC & U.S. E.P.A.
Focused Feasibility Study
232
122 • '
Document Date
Document Type •
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
08/13/86
Statement
TWC
Public Meeting
"Statement for Odessa Chromium I & II Public
Meeting"
6
123
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
08/13/86
Meeting Transcript
International Litigation Services
Transcript of Odessa Public Meeting
67
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa, Chromium I
Job Number: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/1 A/86.
News Article
Gail Burke
Odessa American
Public
"Objections Raised to EPA Plan"
2
125
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/19/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No. 10
3
126
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/19/86
Report
Robert Newton
IT Corp/
Greg Tipple
TWC '
Progress Report No. 11
2
127
08/19/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No. 12
128
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: ,01ftffiffi
Job Number: I2ZS
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
08/21/86
Letter
Larry Soward
TWC
U EA- Regional Administrator
siaie Concurrence with Remedial Alternative
Selection
1
129
08/25/86
Memo
Martha McKee
U.S. E.P.A. (6H-ES)
Scott Parrish
U.S. E.P.A. (WH-548E)
Discussion of New Contamination
3
130
08/26/86
Letter
Charles Noll
C.A. Noll Investments
Carl Edlund
U.S. E.P.A. (6H-S)
Opposition to annexation
1
131
08/27/86
Letter
Leroy Spinks
Big State Bit Service
William Lokey
TDWR
Opposition to Annexation
1
132
-------
ADMINISTRATIVE RFCORDS INDFX
Job Name: Odessa Chromium I
Job Number: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/27/86
Letter
James Harris
Thompson & Knight
Diana Hinds
U.S. E.P.A. (6H-EC)
Comments on Focused FS
12
133
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/29/86
Memo
Carl Edlund
U.S. E.P.A. (6H)
Charles Gazda
U.S. E.P.A. (6E-E)
Contamination West of Site
1
134
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
09/0^/86
Letter
Kenneth Beat
Strasburger 4 Price
Allyn Davis
U.S. E.P.A. (6H)
Objections to Remedial Alt. Selection
3
135
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
07/08/86
ROD
Dick Whittington
U.S. E.P.A., Regional Administrator
ROD-Remedial Alternative Selection
41
136
-------
RECORDS INDEX
Job Name:
Job Nunber:
Chomium I
T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
09/10/86
Letter
David Sorrells
TWC
Paul Sieminski
U.S. E.P.A. (6H-5A)
Procurement Documentation
3
137
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
09/19/86
Letter 4 Attachment
Robert Newton
IT Corp.
Greg Tipple
TWC
Additional Work Tasks I
1U
138
& II
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description.
Number of Pages'
Document Number Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
09/29/86
Letter
Allyn Davis
U.S. E.P.A. (6H)
Kenneth Beat
Strasburger and Price
Justification of Remedial Alternative Selection
2
139
09/30/86
Letter
James Harris
Thompson 4 Knight
Allyn Davis
U.S. E.P.A. (6H)
Response to "Responsiveness Summary"
8
140
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chjomjunil
Job Nunber: T27Q
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
09/30/86
Letter
Robert Newton
IT Corp.
Greg Tipple
TWC
"Response to Comment on Pipe String"
2
111
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/15/86
Letter
Carl Edlund
U.S. E.P.A. (6H-S)
James Harris
Thompson & Knight
Response to Letter 9/30/86
3
142
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/16/86
Memo
Jeffrey Lybarger, M.D.
DHHS
Carl Hickam
U.S. E.P.A. - Public Health Advisor
Objection to Language in Health Assessment
2
143
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
10/23/86
Record of Communication
Jim McGuire
U.S. E.P.A. (6H-ST)
File
Action Level
1
-------
RFCORDS INDEX
Job Name: Qdessa Chromium I
Job Nunber: T27Q
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
- Rev. 2
10/23/86
Letter
Robert Newton
IT Corp.
Greg Tipple
TWC
Addendum to Sampling Plan
2
145
10/30/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No.
2
146
10/30/86
Report
Robert Newton
IT Corp.
Greg Tipple
TWC
Progress Report No. 15
2
147
12/19/86
Memo with Attachments
Jim McGuire
U.S. E.P.A. (6H-ST)
Carl Hickam
ATSDR - U.S. E.P.A.
Results from Phase II Sampling
5
148
-------
UPMTNTSTPATIVF RECORDS INDEX
Job Name: Qjessa Chromium I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
Document Date
Document Type
Originator
-Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
12/31/86
Memo
Jim McGuire
U.S. E.P.A. (6H-ST)
File
Meeting 12/19/86 Review
4
149
01/21/87
Letter
Greg Tipple
TWO
Robert Monk
IT Corp.
Solid Waste Generated § Site
1
150
01/31/87
Letter
Bonnie DeVos
U.S. E.P.A, (6H-SS)
Greg Tipple
TWC
Approval of Waste Disposal
1
151
02/03/87
Letter
Stanley Hitt
U.S. E.P.A.
Greg Tipple
TWC
Impact of 'SARA1
2
152
-------
RECORDS INDEX
Job Name:
Job Nunber:
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
02/06/87
Memo
Senior Public Health Advisor
ATSDR
Jim McGuire
U.S. E.P.A. (6B-ST)
Various Recommendations
2
153
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Docunent Nunber Sequence
Docunent Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Docunent Nunber Sequence
02/09/87
Memo
Jim McGuire
U.S. E.P.A.
File
Odessa Cr I 4 II
Meeting Summary
2
154
02/19/87
Record of Communication
Jim McGuire
U.S. E.P.A. (6H-ST)
Greg Tipple
TWC
Contract Changes
1
155
02/24/87
Letter & Attachments
Alan Husak
IT Corp.
Greg Tipple
TWC
Impact of 'Sara1 on Scope of Work
12
156
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromiim I
Job Nunbcr: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
02/24/87
Letter
Alan Husak
IT Corp.
Greg Tipple
TWC
Finalization of Objectives & Criteria
3
157
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/11/87
Letter
Bonnie DeVos
U.S. E.P.A. (6H-SS)
David Sorrells
TWC
Notification of Resident Questionnaire
2
158
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
Document Date
Docunent Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/23/87
Report
Robert Monk
IT Corp.
Greg Tipple
TWC
Progress Report No. 16
2
159
03/23/87
Report
Robert Monk
IT Corp.
Greg Tipple
TWC
Progress Report No. 17
2
160
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/23/87
Report
Robert Monk
IT Corp.
Greg Tipple
TWC
Progress Report No. 18
2
161
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
03/23/87
Report
Robert Monk
IT Corp.
Greg Tipple
TWC
Progress Report No. 19
2
162
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description.
Number of Pages
Document Number Sequence
03/27/87
Memo
Senior Public Health Adviser
ATSDR
Jim McGuire
U.S. E.P.A. (6H-ST)
Various Recommendations
2 '
163
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
04/01/87
Final Report
IT Corporation
U.S. E.P.A. & TWC
Remedial Investigation
Vols. 1,2,3
164
-------
AnMTMTSTRATTVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
OM/03/87
Letter
Robert Monk
IT Corp.
Patricia Curl
TWC
Plugging of Abandoned Wells
2
165
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
OM/24/87
Record of Communication
Jim McGuire .
U.S. E.P.A. (6H-ST)
Robie Hurt
U.S. E.P.A. (6B-SS)
Concern over lack of progress
1
166
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
05/06/87
Report
Robert Monk
IT Corp.
Patricia Curl
TWC
Lab. Information, Additional Work Tasks
7 '
167
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
05/07/87
Report
Alan Husak
IT Corp.
Patricia Curl
TWC
Technology Screening
13
168
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromiim_I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Number Sequence
05/08/87
Report
Robert Monk
IT Corp.
Patricia Curl
TWC
Progress Report No.
2
169
20
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
05/08/87
Report
Robert Monk
I.T. Corp.
Patricia Curl
TWC
Progress Report No. 21
3
170
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
05/08/87
Report
Robert Monk
I.T. Corp.
Patricia Curl
TWC
Progress Report No. 22
2
171
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
05/20/87
Letter
Jim McGuire
U.S. E.P.A. (6H-ST)
Jim Steed
TWC
Comments on Contract
1
172
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
05/22/87
Report
Alan Husak
IT Corp.
Patricia Curl
TWC
Remedial Alternatives Development
3
173
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Number Sequence
06/03/87
Letter
S. W. Howell
Howell Engineering
Bob Monk
IT Corp.
Discussion of water disposal
2
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
06/25/87
Telephone Memo
Robert Monk
IT Corp.
Mr. Howell
Howell Engineering
Discussion with Odessa Re:
1
175
water disposal
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
06/29/87
Record of Communication
Mark Fite
U.S. E.P.A. (6H-ST)
Bob Monk
IT Corp.
Meeting Re: Owner Survey
1
176
-------
>DH'-'STRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Nunber: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Number Sequence
07/07/87
Report
Larry Soward
TWO
Alan Husak
IT Corp.
Contract No.
3
177
14-50040 Amendment No. 6
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
07/08/87
Report
Robert Monk
IT Corp.
Patricia Curl
TWC
Remedial Alternatives Development
6
178
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description • •
Number of Pages
Document Number Sequence
07/17/87
Record of Communication
Mark Fite
U.S. E.P.A. (6H-ST)
Bob Monk
IT Corp.
AWS Design & Survey Results
1
179
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Nunber Sequence
07/21/87
Site Questionnaire
Bob Monk
IT Corp.
Jim McGuire/Mark Fite
U.S. E.P.A.
Site Survey Summary
33
180
-------
ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chropiiun I
Job Number: T27Q
Docunent Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Number Sequence
07/24/87
Report
Al Husak
IT Corp.
Jim Steed
TWC
Work Scope
22
181
- Water System Design
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/03/87
Letter
Carl Edlund
U.S. E.P.A. (6B-S)
David Sorrells
TWC
Excessive Cost Discussion
5
182
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
•Number,.of Pages
Document Number Sequence
08/05/87
Letter & Attachments
Patricia Curl
TWC
Robert Monk
IT Corp.
Waste Volume Requirement
9 „
183
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Nunber of Pages
Document Nunber Sequence
08/18/87
Report
Robert Monk
IT Corp.
Jim Steed
TWC
Rev. 1, Scope of Work, Alt. Water Sys.
19
18M
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ADMINISTRATIVE RECORDS INDEX
Job Name: Odessa Chromium I
Job Number: T27Q
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/19/87
Record of Communication
Jim Steed
TWC
Jim McGuire
U.S. E.P.A. (6H-ST)
RD for Phase 2 AWS
1
185
Document Date
Document Type
Originator
Originator - Affiliation
Recipient
Recipient - Affiliation
Description
Number of Pages
Document Number Sequence
08/20/87
Record of Communication
Bonnie DeVos
U.S. E.P.A. (6B-SS)
Mark Fite
U.S. E.P.A. (6H-ST)
Phase 2 RD for AWS
1
186
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TVr. RECGRD INDEX
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Jir.i NcGuire
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001
D«vj. d H. Sorrel is, P. E. , Chief, Super-fund
Section, Hazardous and Solid Waste Division
Tc»xas Wf»ter Commission
Robin Gel-3ton-Walls, U.S. E. P. ft. Region VI
Correspondence
Identifying Ferie?r;O ftRflRs - Odessa Chromium
I and TI Superfund site«
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for Chromi urn
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hyr-on 0. Knudson, P. E. , Director, Wate
Mariagemerit Division
U. 5. E.P.ft. Region VI
Ollyn M. Davis, Director, Water
Division, U.S. E. P. R. Region VI
N e m o r 5 n cl' A rr, a n d a 115 c h rn t? n t
Status of Drinking W<'it.er' Maxirnum
COf-itaniin^nt Level (MCL) for Chromium
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Final Report
Final Rfc^or* Rsii'iaj niny Pcr-tion Feasibility
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ATTACHMENT B
ATSOR Health Assessment
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DEPARTMENT OF HEALTH A HUMAN SERVICES Public Health Service
Agency for Toxic Substances
and Disease Registry
Atlanta GA 30333
EJECT: Health Assessment
Odessa Chromium I 4 II (SI-87-084)
Odessa, Texas
iOM: Senior Public Health Advisor
Agency for Toxic Substances and Disease Registry
Regional Office for Health Response
>: Mr. Jim McGuire
Texas Remedial Section (6H-ST)
HE: March 27, 1987
FATEMENT OF PROBLEM
Environmental Protection Agency (EPA), Region VI Office, has asked the
:y for Toxic Substances and Disease Registry (ATSDR) to review recent
data from the Odessa Chromium sites and to re-evaluate our earlier,
^commendation that direct contact with the soil be limited.
ist.of Documents Reviewed
. Memorandum from Jim McGuire, EPA Region 6, to Carl Hickam, ATSDR,
regarding Odessa Chromium I and II Sites. .December 18, 1986.
. Data from Remedial Investigation for Odessa Chromium I. Figures 4-2 and
4-2a, Tables 5-4 and 5-4a, and pages 5-3.
. ATSDR file on Odessa Chromium I and II.
iscussion
'he Odessa Chromium I and II sites consist of several industrial
•roperties in northwest Odessa, Texas, that are contaminated with metal
>lating wastes. In June-July 1983 four soil samples were collected at the
>dessa Chromium I site that ranged from 2,000 to 20,000 PPM total
:hromiura. The samples were not tested for hexavalent chromium. Based on
.his data, ATSDR recommended that direct contact with the contaminated
be limited.
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hase II analytical results from soil borings at five of the properties
nvolved have been sent to ATSDR. The table below summarises the total
hromium data.
Total Sample Number of
ocation Chromium Depth Samples
_ (mg./kg.) (Ft.)
318 Brazos 1311 0-2.5 7
leridian Oil 367 0-2.5 10
asin Radiator 162 0-2 3
'ooley Tool 178 0-2 2
[DT/Foreman Electric 22 0-2 2
if the total chromium levels reported for the top soil boring fractions are
•epresentative of the material at the soil surface, these levels do not pose a
significant threat to human health by direct contact with, or ingestion of, the
:ontaminated soil, even if all the chromium were in the hexavalent form.
SPA is currently investigating the airborne- pathway for the metals found at
the sites. We support this effort because both nickel and hexavalent chromium
are carcinogens via the inhalation exposure route.
EPA has previously identifies Chromium contamination of drinking water wells
and is planning action to remove this exposure.
Recommendations
1. Direct contact with the on-site soil does not need to be limited.
2. In future situations where direct contact with soil is a potential health
concern, samples should be taken at the surface, rather than from a boring.
3. Hexavalent chromium data should be used in the evaluation of the airborne
exposure pathway, since hexavalent chromium is a carcinogen via inhalation.
4. Where the average total chromium levels in surface soil are greater than
3,000 mg./kg., and soil ingestion is a potential pathway for human exposure,
the samples should be analyzed for hexavalent chromium.
We hope this information is useful to you in your endeavors at this site.
Reviewer: I
Ralph O'Connor
arl R. Hickara, R.S.
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ATTACHMENT C
COMMUNITY RELATIONS/PUBLIC COMMENTS
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Odessa Chromiun I and
Odessa Chromium II Sites
Responsiveness Summary
This community relations responsiveness summary is divided into two sections:
Section I: Background on Community involvement and Concern.
This section provides a brief history of community interest and
concern raised during the remedial planning activities at the
Odessa Chromium I and Odessa Chromium II Superfund sites.
Section II: Summary of Major Comments Received during the Public Comment
Period and the EPA Responses to the Comments.
Both written and spoken comments are categorized by topics.
EPA responses to these relevant major topics are also presented.
1. Background on Community Involvement
The final Feasibility Study on the proposed Remedial Alternatives for the
groundwater was submitted to the EPA in December 1987. The EPA issued a news
release on December 24, 1987, announcing the availability of the Feasibility
Study and EPA's preferred alternative and invited people to an "open house"
on January 5, 1988. The open house, which was held at the Odessa City Hall,
served to present the alternatives to City Officials and interested citizens
and answer their questions. ~
An EPA prepared fact sheet which described alternative clean up plans, ~
along with the EPA preferred remedy was mailed to the interested and
affected public on January 4, 1988. The fact sheet gave a brief site
history, described the Superfund process and the cleanup alternatives,
provided details about the public comment period and the public meeting
to be held on January 21, 1988.
On January 21, 1988, at 7:00 p.m. the EPA and the TWC staff conducted
a public meeting at the Odessa City Council Chamber to brief the
citizens on the study findings, review the alternatives considered;
describe the EPA's preferred remedy, answered questions, and received
comments on EPA's preferred remedy. Twenty-one people attended this
meeting.
The public comment period began on January 8, 1988, and was to end
February 8, 1988. An extension was requested and granted by EPA
which extended the comment period until February 15j 1988_. _. .._ ...;,
Summary of Public Comments Received During Public Comment Period .
And Agency Responses
A summary of the comments provided during the commsrvt-peiH-od-is provided
below.
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Comment II
Which groundwater treatment process could cause an increase in the total
dissolved solids of the groundwater?
EPA Response to Comment II
Studies conducted for the chemical treatment system indicate an increase of
total dissolved solids in the groundwater is possible at both the Odessa
Chromium I and II sites. The average increase experienced during the tests
at both sites was 530 ppm. Although this increase in dissolved solids is not
considered a health threat, it may effect the secondary quality of the
groundwater (taste, odor, color).
Comment 12
What is the probability that the treatment of the groundwater using the
electrochemical system will be completed within 5 years of system start-up
(1996 for Odessa I and 1997 for Odessa II)?
EPA.Response to Comment 12
The 5 year completion date are estimates based on previous experience with the
electrochemical treatment system. The schedules are contingent upon available
funding as well as minimal delays associated with the design, construction,
and operation of the treatment system. The system will continue to operate
until the Federal regulated drinking water standard for chromium is attained.
Comment 13
Will the electrochemical treatment of the chromium contaminated groundwater
generate a hazardous residue?
EPA Response to Comment 13
No. During the treatment process, up to thrity-eight (38) tons of treatment
residue will be precipitated per year. The residue will contain ferric
hydroxide and chromic hydroxide. The treatment residue is expected to be
nonhazardous. Laboratory testing of the material will be performed for
verification. Should the testing confirm the residue is nonhazardous, it
may be disposed of at a nonhazardous industrial disposal facility; otherwise,
the material will be disposed as hazardous waste.
Comment 14
Will the Environmental Protection Agency be conducting a clean-up action for
the chromium contaminated soils at the sites?
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