Sampling Approach For Characterization Of The Scarboro Community, Oak Ridge, Tennessee : Oak Ridge Reservation Environmental Health Archives (Orreha) Document Number Xxi.


Oak Ridge Reservation
Environmental Health Archives
Current as of 10FEB99
Compiled by
Captain John R. Stockwell, M.D., M.P.H.
U.S. Public Health Service
Sampling Approach for Characterization of the
Scarboro Community, Oak ridge, Tennessee
c. 01MAR98
Oak Ridge Reservation
Environmental Health Archives
(ORREHA)
Document Number

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JE/EM-52/R1
Sampling Approach
for Characterization of the Scarboro Community,

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JE/EM-52/R1
Sampling Approach
for Characterization of the Scarboro Community,
Oak Ridge, Tennessee
Date Issued—March 1998
Prepared by
Jacobs EM Team
125 Broadway Avenue
Oak Ridge, Tennessee
under contract DE-AC05-93OR22028
Prepared for
U.S. Department of Energy

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CONTENTS
FIGURES		v
TABLES 		v
ACRONYMS AND ABBREVIATIONS		vii
1.	SITE LOCATION		1
2.	SITE DESCRIPTION		1
3.	PHYSICAL SETTING		1
3.1	DEMOGRAPHY AND LAND USE		1
3.2	GEOLOGY 		1
3.3	SOIL 		3
3.4	GROUNDWATER		3
3.5	SURFACE WATER		3
3.6	DRAINAGE PATTERNS 		4
3.7	CONTAMINANTS OF CONCERN		4
4.	SITE ACCESS		4
5.	SAMPLING AND ANALYSIS			4
5.1 RATIONALE FOR SAMPLING 		4
6.	LABORATORY DELIVERABLES/DATA VALIDATION 		17
6.1	EVALUATION OVERVIEW 		17
6.2	EVALUATION LEVEL 		17
7.	QC SAMPLE FREQUENCY		18

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FIGURES
Figure No.	Page
1.	Site location	 2
2.	Sample locations	 9
TABLES
Table No.	Page
1.	Samples, analytes, and target constituents, Scarboro Community	 5
2.	Target analyte and compound list constituents and detection limits, Scarboro
Community 		 11
50
JT0015980I INS/MBH
V

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ACRONYMS AND ABBREVIATIONS
cm
centimeter
Cs
cesium
DOE
U.S. Department of Energy
EPA
U.S. Environmental Protection Agency
ft
foot
GM
Geiger-Miiller
ha
hectare
in.
inch
m
meter
ORR
Oak Ridge Reservation
QC
quality control
Sr
strontium
TAL
target analyte list
Tc
technetium
TCL
target compound list
1998
101159301 INS/MBH
vii

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1. SITE LOCATION
The Scarboro Community, Oak Ridge, Tennessee, is located northwest of the Oak Ridge
Y-12 Plant along the U.S. Department of Energy (DOE) Oak Ridge Reservation (ORR)
boundary. The community is located in east Oak Ridge and is bounded to the west by East Fork
Ridge and to the east by Pine Ridge (Fig. 1).
2. SITE DESCRIPTION
The Scarboro Community is a small urban community in the city of Oak Ridge,
Tennessee. It is located approximately 457 m (1,500 ft) northwest of the Y-12 Plant along the
DOE ORR boundary. Pine Ridge separates the Scarboro Community from the Y-12 Plant area.
The community occupies an area of approximately 101 ha (250 acres).
3. PHYSICAL SETTING
Topography of the Scarboro Community consists of gently rolling hills that have been
cleared for residential use. The Scarboro saddle consists of a number of depressions in the ridge
that may act as a conduit for air movement within the community. Pine Ridge rises sharply to
the south. It is unknown whether the sampling area is in a floodplain and whether wetlands are
present.
3.1 DEMOGRAPHY AND LAND USE
Land in the Scarboro Community was cleared and divided into lots ranging in size from
approximately 0.1 to 0.2 ha (0.25 to 0.5 acre). The Scarboro Community Center Park and
various churches and small businesses are located in this area.
3.2 GEOLOGY
The Scarboro Community is underlain by the upper Rome Formation and the
Chickamauga Group. According to P. J. Leminski (Geologic Mapping of the Oak Ridge K-25
Site, Oak Ridge, Tennessee, 1994), the Rome Formation is the oldest rock unit exposed in the
Oak Ridge area. The upper Rome Formation is composed primarily of sandstone, siltstone, and
shale. The sandstone is silica and hematite cemented and mostly fine- to medium-grained. The
JT0OI5980I INS/MBH
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erosional resistance of the sandstone is responsible for the development of Pine Ridge which
forms the southern boundary of the Scarboro Community. The northern part of the Scarboro
Community is underlain by the Chickamauga Group of East Fork Valley (Oak Ridge Valley).
According to R. D. Hatcher, Leminski, et al. (Report on the Geology of the Oak Ridge
Reservation, ESD Pub. No. 3860, 1992), this younger geologic unit was placed adjacent to the
older Rome Formation by a thrust fault. The Chickamauga Group consists almost entirely of
limestone-dominated lithologies. This section of the Chickamauga Group consists predominantly
of fossiliferous, thin to thick-bedded, fine-grained limestone interbedded with thin-to-massive beds
of micrite and shale. In the lower and upper portions of the section, the limestone is
predominantly argillaceous (high clay content). Near the upper part of the section a
predominantly dark-gray to black chert bed underlies a metabentonite.
3.3 SOIL
The Scarboro Community is underlain by a silty loam commonly found on foot slopes
below hills and ridges. Soils and subsoils extend to more than 1.52 m (5 ft) deep and consist of
three distinct regions. The upper region is strong brown silt loam; the middle region is red, silty
clay with mottled shades of brown; the lower region is red, shaly, silty clay loam. Soils are
strong-to-medium in acidity except in some areas where surface soils have been limed. Soils of
this type are typically low in fertility but high in water capacity. Overall, soil has a fair-to-good
potential for urban use.
3.4 GROUNDWATER
No groundwater monitoring wells have been installed by DOE in the Scarboro
Community; however, city water is available as drinking water to the community. Shallow
groundwater is expected to follow the topography which runs north toward East Fork Poplar
Creek.
3.5 SURFACE WATER
Three small intermittent drainage areas intersect the Scarboro Community. These small
drains flow north, converge, and ultimately join East Fork Poplar Creek approximately 609 m
(2,000 ft) north of the community.
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3.6 DRAINAGE PATTERNS
Drainage patterns generally follow the topography which run predominantly north toward
East Fork Poplar Creek.
3.7 CONTAMINANTS OF CONCERN
Based on the ongoing remedial investigation for the Y-12 Plant, mercury and radionuclides
are two primary contaminants of concern, and therefore, are the target contaminants of concern
for this investigation. Table 1 of this sampling approach presents the samples, analytes, and
target constituents used in this investigation.
4. SITE ACCESS
The city of Oak Ridge will be contacted before initiation of any sampling activities at this
site. All underground utilities located near the proposed sampling locations will be clearly
marked and identified. In cases where proposed sampling locations fall on private property,
consent of the property owner will be obtained before sampling activities begin. Utility maps are
available but are not included in this document.
5. SAMPLING AND ANALYSIS
5.1 RATIONALE FOR SAMPLING
The purpose of this investigation is to validate measurements taken at the perimeter air
monitor 46 (located in the Scarboro Community) and external gamma data collected during past
flyover surveys. To ensure validation of these measurements, this sampling plan is designed to
exceed the requirements recommended by the U.S. Environmental Protection Agency (EPA).
The following is a reference from the Environmental Investigation Standard Operating Procedures
and Quality Assurance Manual, May 1996 (pages 5-9 and 5-10) which states:
"When the purpose of the investigation is to determine the presence of
contaminants, a simple strategy can be used. Such a purpose is normally
encountered during screening inspections, criminal investigations, and any
other project where the scope is limited to gathering evidence of
contamination. These cases are normally characterized by a lack of
previous sampling data, thereby requiring that sample types and locations
JT00159801.1NS/M BH
4

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Table 1. Samples, analytes, and target constituents, Scarboro Community, Oak Ridge, Tennessee
Aiialyte/
matrix
Number of
samples
Applicable
Jacods EM Team
SOP
Analytical
method .
Container
Preservative
Detection limits'
No- and type of
qa;qc
Total Hg in
soil/sediment
Sediment: 9
Soil: 47
FS-8.1.1
EPA CLP
4-oz amber glass
Cool to 4"C ± 2°C
0.1 mg/kg
1/20 samples
Total Hg surface
water
9
FS 6.1.1
EPA CLP
1 L plastic
HNOj pH < 2
0.2 ng/L
1 sample
Gross alpha/beta
in surface water
9
FS-6.1.1
900
I-gal'
HNO, to pH < 2.0
Based on
laboratory selected
1/20 sample
Gross alpha/beta
in soil/sediment
Sediment: 9
Soil: 47
FS-8.1.1
9310
500-g polyethylene
Cool to 4°C ± 2°C
Based on
laboratoiy selected
1/20 samples
Isotopic uranium
in water*
9
FS-6.1.1
901.1
908"-'
1 -gal1
HNO, to pH < 2.0
0.59 pCi/L
) sample
Isotopic uranium
in soil/sediment®
Sediment: 9
Soil: 47
FS-8.1.1
Gamma spec
908*
500-g polyethylene
Cool to 4°C ± 2°C
0.16 pCi/g
1/20 samples
TCL organics
soil/sediment
Sediment: 1
Soil: 4
FS-8.1.1
EPA CLP
3 x 8 oz glass
Cool to 4°C ± 2°C
See Table 2 of this
sampling approach
1 sample
TAL inorganics
soil/sediment
Sediment: 1
Soil: 4
FS-8.1.1
EPA CLP
8 oz glass
Cool to 4"C ± 2°C
See Table 2 of this
sampling approach
1 sample
"'Sr soil/scdiment
Sediment: 1
Soil: 4
FS-8.1.1
Beta-GPC
500 g polyethylene
Cool to 4"C ± 2°C
10 pCi/g
1 sample
l57Cs soil/sediment
Sediment: 1
Soil: 4
FS-8.1.1
Gamma spec
500 g polyethylene
Cool to 4°C ± 2°C
0.5 pCi/g
1 sample
TCL organics
surface water
1
FS-6.1.1
EPA CLP
VOC: 3 x 40 mL
vial;
SVOC:
2 x 1 L glass;
pesticide/PCBs:
2 x 1 L glass
VOC: HCL;
SVOC: 4°C ± 2'C:
pesticide/PCB: 4°C
± 2°C
See Table 2 of this
sampling approach
1 sample
TAL inorganics
surface water
1
FS-6.1.1
EPA CLP
Metals: 1 L plastic:
Cn: 1 L plastic
Mewls: HNO, to pH
< 2.0;
Cn: NaOH pH > 12
See Table 2 of this
sampling approach

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Table 1. (continued)
z
sc
2
ON
Analyte/
matrix
Number of
samples
Applicable
Jacobs EM Team
SOP
Analytical
method
Container
Preservative
Detection limits*
No. ami type of
QA/QC
*"Sr surface water
l
FS-6.1.1
Liquid
scintillation/beta
counter
1 gal polyethylene
HNOj to pH < 2.0
1.0 pCi/L
1 sample
"'Cs surface water
l
FS-6.1.1
Gamma spec
1 gal polyethylene
HNOj to pH < 2.0
5-10 pCi/L
1 sample

Sediment: 1
Soil: 4
FS-8.I.1
Alpha spec
500 g polyethylene
Cool to 4°C ± 2'C
0.16-1.0 pCi/g
depending on
isotope
1 sample
ZJll/UV/aWpy
Sediment: 1
Soil: 4
FS-8.1.1
Alpha spec
500 g polyethylene
Cool to 4«C ± 2°C
2 pCi/g
1 sample
"""Th
Sediment: 1
Soil: 4
FS-8.1.1
Alpha spec
500 g polyethylene
Cool to 4°C ± 2°C
0.1 pCi/g
1 sample
2J3/ZJ4/2J5/U»y
1 surface water
FS-6.1.1
Alpha spec
1 gal3
HNOj to pH < 2.0
1.0 pCi/L
1 sample
23^239/24npy
1 surface water
FS-6.1.1
Alpha spec
1 gal3
HNOj to pH < 2.0
0.1 pCi/L
1 sample

1 surface water
FS-6.1.1
Alpha spec
1 gal3
HNOj to pH < 2.0
0.5 pCi/L
1 sample
"Note: Detection limits listed are based on the preliminary remediation goals for the listed analytes.
'Isotopic analyses for uranium will be run on gamma detections exhibiting evidence of enriched uranium and on 10 percent of nondetects for enriched uranium.
'Neutron activation is an acceptable alternative method for isotopic determination.
£
i
°C = degrees Celsius
CLP = Contract Laboratory Program
Cs = cesium
EM = environmental management
EPA = U.S. Environmental Protection Agency
> = greater than
g = gram
gal = gallon
GPC = gross proportional counting
HCL = hydrogen chloride
Hg = mercury
HNOj = nitric acid
kg = kilogram
< = less than
L = liter
Hg = microgram
mg = milligram
mL = milliliter
NaOH = sodium hydroxide
No. = number
oi = ounce
± = plus or minus
PCB = polychlorinated biphenyl
pCi = picocurie
Pu = plutonium
QA = quality assurance
QC = quality control
SOP = standard operating procedure
Sr = strontium
SVOC = semivolatile organic compound
TAL = target analyte list
TCL = target compound list
Th = thorium
U = uranium

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be determined by site history and a site survey. In these instances, an
authoritative design is normally used. Authoritative sampling usually
involves a limited number of locations (10 to 15) from which grab samples
are collected. Locations are selected where there is a good probability of
finding high levels of contamination. Examples may include areas where
significant releases or spillage occurred according to the site history or
areas of visible staining, stressed vegetation, or surface drainage are noted
in the site survey."
Five sampling tasks will be performed to validate these measurements. These sampling tasks will
also provide biased locations, representing areas where potential airborne deposition could occur
and locations based on community input as well as statistically selected locations. These tasks
include biased sampling of residential properties, random sampling of residential properties, ORR
boundary sampling, focused soil sampling in the Scarboro saddle, and surface water and sediment
sampling in the Scarboro tributaries (Fig. 2). Soil and sediment samples will be collected from
the 0-5-cm (0-2-in.) interval below land surface. If vegetation is present it will be removed
before sampling. The soil and sediment will be collected using a stainless-steel spoon or scoop,
mixed in a stainless-steel bowl and placed in the appropriate sample container. Additionally, a
radiological walkover of representative areas of the Scarboro Community will be performed.
Biased soil sampling from six common areas will be performed. One soil sample will be
collected from each common area selected. Random soil sampling will be performed at
16 residential properties (roughly 10 percent of the residential properties in the community),
which will have been selected with input from the residents of the community. One soil sample
will be collected from each of these properties.
Soil samples along the perimeter will be collected in the Scarboro Community along a
transect parallel to the boundary line. The transect will connect the southwestern corner and the
southeastern corner of the community. Soil samples will be collected from eight sample
locations.
Focused soil sampling will be conducted in a saddle which is located in the western part
of the Scarboro Community. Three transects will divide the saddle. Two soil samples will be
collected from each transect. The samples will be collected on either side of the creek that flows
through the low point in the saddle. Transects will be located south of Spellman Avenue, south
of the intersection of South Dillard Avenue and South Fisk Avenue, and south of Wilberforce
Avenue.
JT00IS980! INS/MBH
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Eleven soil samples will be collected from statistically selected locations. The statistical
process includes laying a numbered 100-square grid across the Scarboro Community and selecting
11 grid numbers using a computerized random number generation program.
Surface water and sediment samples will be collected from nine tributaries flowing through
the community. Three of the nine tributaries were selected using mapped tributaries on the
topographic maps. Six other tributaries were selected based on community comments. Sediment
samples will be collected from all tributaries; however, surface water will only be collected from
tributaries with flowing water during sampling activities. Surface water samples will be collected
using direct-fill methods to the extent practical and may be collected using a stainless steel dipper,
if conditions warrant.
Samples collected will be analyzed for the constituents listed on Tables 1 and 2. Sample
results will be evaluated against the Final Report on the Background Soil Characterization Project
at the Oak Ridge Reservation, Oak Ridge, Tennessee, DOE/OR/Ol-1175-Vl, issued October
1993, to determine if elevated concentrations of target constituents are present in the Scarboro
Community. All samples collected will be analyzed for mercury and uranium. In addition,
10 percent of the soil, sediment, and surface water samples will be analyzed for expanded
constituents including target compound list (TCL) organics, target analyte list (TAL) inorganics,
"'Sr, l57Cs, and alpha speciation analyses. Quantative results will be obtained for all radiological
results detected above minimum detectable activity. Detection limits for TCL/TAL analytes will
be according to the EPA Contract Laboratory Program Contract Required Quantitation Limits or
EPA SW-846 Method protocol. The method selected will be based on the detection level
requirements identified in Table 2, or to ensure compatibility of data results with those found in
the Final Report. All sampling activities, decontamination of sampling equipment, and quality
control (QC) will be conducted in accordance with standard operating procedures written in
accordance with the EPA, Region 4 Environmental Investigations and Quality Assurance Manual.
On completion of sampling activities at each sample location, the borehole will be backfilled with
soil and seeded, if necessary.
A radiological walkover survey will be performed at the Scarboro Community Center Park
and selected residences and the survey will be performed in all outdoor areas of the property
where access is available. The lack of buildings, trees and large vegetation in this area provides
a clearer area for surveying. This survey will be performed using a sodium iodide gamma
scintillation detector and a Geiger-Muller (GM) detector. A data collection system will be used,
such that radiological readings correspond to known geographical data points (e.g., Global
Positioning System or equivalent).
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LEGEND
Statistically selected sample locations
Random selected soil sample
Soil sampling along perimeter and
focused soil sample in saddle
Bias samples (common areas)
Surface water and sediment
SCALE IN FEET
Contour interval 5 loot
Tennessee State Plane NAD 83
Si
Fig. 2
Sample locations
Scarboro Community - Oak Ridge, Tennessee
DOCUMENT ID: 35H830
0015/99
DRAWING ID: MAPINFO
98-15612.WOR
DRAWING DATE:

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Table 2. Target analyte and compound list constituents and detection limits',
Scarboro Community, Oak Ridge, Tennessee
Inorganic target tmatyte list :
Analyte
Water (pg/L)
Soil (mg/kg),
Aluminum
200
40
Antimony
60
12
Arsenic
10
2
Barium
200
40
Beryllium
5
1
Cadmium
5
1
Calcium
5,000
1,000
Chromium
10
2
Cobalt
50
10
Copper
25
5
Iron
100
20
Lead
3
0.6
Magnesium
5,000
1,000
Manganese
15
3
Mercury
0.2
0.1
Nickel
40
8
Potassium
5,000
1,000
Selenium
5
1
Silver
10
2
Sodium
5,000
1,000
Thallium
10
2
Vanadium
50
10
Zinc
20
4
Cyanide
10
1
JT00)5980).1N5\MBH
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Table 2. (continued)
Compound.
Water (pg/L>
• Soil (jug/kg)
Tetrachloroethene
10
10
1,1,2,2-Tetrachloroethane
10
10
Toluene
10
10
Chlorobenzene
10
10
Ethylbenzene
10
10
Styrene
10
10
Xylenes (total)
10
10
Semivolatile target compound list
Compound
Water Otg/L)
Soil Otg/kg)
Phenol
10
330
bis (2-Chloroethyl)ether
10
330
2-Chlorophenol
10
330
1,3-Dichlorobenzene
10
330
1,4-Dichlorobenzene
10
330
1,2-Dichlorobenzene
10
330
2-Methylphenol
10
330
2,2'-Oxybis (1-Chloropropane)
10
330
4-Methylphenol
10
330
N-Nitrosodi-n-propylamine
10
330
Hexachloroethane
10
330
Nitrobenzene
10
330
Isophorone
10
330
2-NitrophenoI
10
330
2,4-DimethyIphenol
10
330
bis(2-Chloroethoxy)methane
10
330
2-4-Dichlorophenol
10
330
1,2,4-Trichlorobenzene
10
330
Napthalene
10
330
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Table 2. (continued)
... Senuvolatile target compound list
Compound
Water {/ig/L)
.. Soil (iltg/kg)
4-ChIoroaniline
10
330
Hexachlorobutadiene
10
330
4-Chloro-3-methyl phenol
10
330
2-Methylnaphthalene
10
330
Hexachlorocyclopentadiene
10
330
2,4,6-T richlorophenol
10
330
2,4,5-T richlorophenol
25
830
2 -Chi oronaph th al ene
10
330
2-Nitroaniline
25
830
Dimethyl phthalate
10
330
Acenaphthylene
10
330
2,6-Dinitrotoluene
10
330
3-Nitroaniline
25
830
Acenaphtene
10
330
2,4-Dinitrophenol
25
830
4-Nitrophenol
25
830
Dibenzofuran
10
330
2,4-Dinitrotoluene
10
330
Diethyl phthalate
10
330
4-Chlorophenyl phenyl ether
10
330
Fluorene
10
330
4-Nitroaniline
25
830
4,6-Dinitro-2-methylphenol
25
830
N-Nitrosodiphenylamine
10
330
4-Bromophenylphenyl ether
10
330
Hexachlorobenzene
10
330
Pehtachlorophenol
25
830
JT0OI598O) INSXMBH
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Table 2. (continued)
Semivolatile target compound list i-:''
. Compound
Water Otg/L) ;

Phenanthrenc
10
330
Anthracene
10
330
Carbazole
10
330
Di-n-butly phalate
10
330
Fluoranthene
10
330
Pyrene
10
330
Butyl-benzyl-phthalate
10
330
3,3" Dichlorobenzidine
10
330
Benzo(a)anthracene
10
330
Chrysene
10
330
bis(2-Ethylhexyl)phthalate
10
330
Di-n-octyl phthalate
10
330
Benzo(b) fluoranthene
10
330
Benso(k) fluoranthene
10
330
Benzo(a)pyrene
10
330
Indeno(l,2,3-c,d)pyrene
10
330
Dibenzo(a,h,)anthracene
10
330
Benzo(ghi)peryIene
10
330
Pesticides/aroctors target compound list
Compound
Water (pgfL)
Soil 0
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Table 2. (continued)
Pesticidesfaroclors target compound list.
\ Compound-'"'
Water <#ig/!j
Soil <#tg/kg>
Endosulfan 1
0.05
1.7
Dieldrin
0.1
3.3
4,4'-DDE
0.1
3.3
Endrin
0.1
3.3
Endosulfan II
0.1
3.3
4,4'-DDD
0.1
3.3
Endosulfan sulfate
0.1
3.3
4,4'-DDT
0.1
3.3
Methoxychlor
0.5
17
Endrin ketone
0.1
3.3
Endrin aldehyde
0.1
3.3
alpha-Chlordane
0.05
1.7
gamma-Chlordane
0.05
1.7
Toxaphene
5.0
170
Aroclor-1016
1.0
33
Aroclor-1221
2.0
67
Aroclor-1232
1.0
33
Aroclor-1242
1.0
33
Aroclor-1248
1.0
33
Aroclor-1254
1.0
33
Aroclor-1260
1.0
33
'EPA CLP minimum quantiiation limits for all analytes except acetonitrile will be determined by the selected laboratory.
BHC = benzene hexachloride
DDD = dichlorodiphenyldichloroeihane
DDE = dichlorodiphenyldichloroethylene
DDT = dichlorodiphenyltrichloroethane
kg = kilogram
L = liter
pg = microgram
mg = milligram
JT0OI598O1 1NS\MBH
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The sodium iodide detector will be used qualitatively to note any increases in background
activity and to help determine radiological isopleths that may exist as a result of the community's
geography. The target constituent is uranium and its associated decay products. The uranium
decay products emit one or more beta particles or gamma rays per decay. These daughter
products are always present with the uranium parent. GM detectors respond to the more
penetrating beta and gamma radiation as well as alpha radiation, thus reliably detecting uranium
and providing a conservative upper estimate of any uranium present. Additionally, efficiencies
for the GM detectors will be determined using a "Tc source that gives off a beta particle
consistent in energy levels with the uranium daughters.
6. LABORATORY DELIVERABLES/DATA VALIDATION
6.1 EVALUATION OVERVIEW
All data collected will be validated to ensure completeness and accuracy. Data will be
considered as either screening or defensive depending on data used and needs. Screening data
which will be used solely for transporation purposes are less precise than definitive data and may
not be parameter-specific. Definitive data are generated using procedures and calibrated
instruments of known accuracy and precision.
6.2 EVALUATION LEVEL
Screening: Yes
(Analytical samples will be screened for radionuclides before shipment to laboratory.)
Definitive: Yes
(Laboratory analytical results and radiological walkover data from the Scarboro
Community Center park.)
Percent validation:
100 percent for definitive data.
JT00159801 INS/MBH
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Estimated number of samples:
47 soil samples
9 sediment samples
9 surface samples
Sample delivery groups:
3 soil, sediment, and water
7. QC SAMPLE FREQUENCY
A QC sample will be taken for field duplicates, field rinsates, matrix spikes, and
laboratory duplicates at a frequency of 1 per 20 samples.
JT00159801 1NS/MBH
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