§EPA
United States
Environmental Protection
Agency
Environmental Monitoring
Systems Laboratory
P.O. Box 93478
Las Vegas NV 89193-3478
EPA/600/R-93/076
AorU1993
Research and Development
Environmental Monitoring
Report
Radiation Monitoring
On and Around the
Tatum Dome Test Area,
Lamar County, Mississippi
April 1992
1391ex92nrd.rpt
-------
Radiation Monitoring On and
Around the Tatum Dome Test Area,
Lamar County, Mississippi
April 1992
by
D. J. Thome"
D. J. Chaloud
Environmental Protection Agency
P.O. Box 93478
Las Vegas, NV 89193-3478
prepared for the U.S. Department Of Energy
under Interagency Agreement
DE-A108-91NV10963
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
LAS VEGAS, NV 89193-3478
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NOTICE
The information in this document has been funded wholly or in pan by the United States Environ-
mental Protection Agency through Interagency Agreement DE-A108-91NV10963 from the United States
Department of Energy. It has been subject to the Agency's peer and administrative review, and it has been
approved for publication as an EPA document
Mention of trade names or commercial products does not constitute endorsement or recommendation
for use.
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ABSTRACT
In 1964, and again in 1966 a nuclear explosive was detonated approximately 2700 feet underground
in the Tatum Salt Dome located in Lamar County, Mississippi. Drilling and clean-up activities have resulted
in tritium contamination in close proximity to the surface ground zero. The Long-Term Hydrological
Monitoring Program conducted by the U.S. Environmental Protection Agency consists of annual water
sampling on and around the Tatum Salt Dome.
As in past years no radioactive materials from the Tatum Salt Dome were detected in any water
samples collected offsite. The highest tritium concentration found in water collected in the offsite area was
59 pCi/L. This is from natural sources and is 0.30 percent of the National Interim Primary Drinking Water
Regulations (40CFR141) which places the maximum level of tritium in drinking water to be 20,000 pCi/L.
The highest tritium concentration found onsite was 14,000 pCi/L. This concentration was detected in a water
sample collected from Well HMH-1. This well is less than 10 feet deep and it is located very near the surface
ground zero. The water from this well is not available to the public nor is it suitable for drinking due to its
brackishness.
iii
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CONTENTS
Page
Abstract iii
Figures vi
Acronyms and Abbreviations vii
Acknowledgments viii
Introduction 1
History 1
Monitoring Results: Historical Summary 1
Calendar Year 1992 Monitoring Results ; 5
Water 5
Sample Analysis Procedures 8
Water Analysis Results 8
Conclusion 11
References 12
Glossary of Terms 13
Appendices
A. Summary of Analytical Procedures '. 14
B. Results for Water Samples Collected in April, 1992 15
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FIGURES
Figure Number Page
1 General site location of Project Dribble 2
2 Topographic map of the Tatum Dome Test Area showing the Surface Ground Zero and
outline of Salt Dome at 2,700 feet below land surface , 3
3 Test cavity and aquifers , 4
4 Plots of tritium concentrations vs. time 6
5 Locations on the Tatum Dome Test Area sampled in 1992 9
6 Offsite locations sampled in 1992 10
vi
-------
ACRONYMS AND ABBREVIATIONS
DOE U.S. Department of Energy PHS
EMSL-LV Environmental Monitoring Systems SGZ
Laboratory - Las Vegas 3H
EPA U.S. Environmental Protection Agency 3H+
g gram "Sr
Ge(Li) lithium-drifted germanium gamma de- 238Pu
tCCtOr ZWtMOpu -
Ge(Hp) High purity germanium gamma detec-
tor
keV kilo electron volts = thousand electron HMH-1
volts thru 16
kg kilogram, 1000 grams HM-L,
kt kiloton (TNT equivalent) HM-L2
LTHMP Long-Term Hydrological Monitoring HM-S
Program
L liter HM-1
m meter
min minute HM-2a
MDC minimum detectable concentration
MeV million electron volts HM-2b
mL milliliter = one thousandth of a liter
pCi/L picocuries per liter = 10"12 curies per HM-3
liter = 1/1,000,000,000,000 curies
per liter HT-2c, 4,5
U.S. Public Health Service
surface ground zero
tritium
enriched tritium
strontium-90
plutonium-238
plutonium-239 and plutonium-240 (in-
dividual isotope not distinguished in
analysis)
Hydrological Monitoring Hole
Hydrological Monitoring Well - Local
Aquifer
Hydrological Monitoring Well -
Surficial Aquifer
Hydrological Monitoring Well -
Aquifer 1
Hydrological Monitoring Well -
Aquifer 2a
Hydrological Monitoring Well -
Aquifer 2b
Hydrological Monitoring Well -
Aquifer 3
Hydrological Test Hole
vii
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ACKNOWLEDGMENTS
The authors would like to acknowledge Mr. M.G. Davis and the staff of the hydrological monitoring
group for their dedication to quality and their tireless work in the design and execution of the sampling effort.
Also, we wish to thank Mr. Richard Deshler, International Technologies Corp., for the use of his figure of the
Tatum Dome aquifers, water wells and text cavity (Figure 3).
viii
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INTRODUCTION
Under an Interagency Agreement with the U.S.
Department of Energy (DOE), the Environmental
Monitoring Systems Laboratory (EMSL-LV) of the
U.S. Environmental Protection Agency (EPA) located
in Las Vegas, NV, conducts a Long-Term Hydro-
logical Monitoring Program (LTHMP) to measure
radioactivity concentrations in water sources near
the sites of underground nuclear explosions. The
results of the LTHMP provide assurance that radio-
active materials from the tests have not migrated into
drinking water supplies. This report presents the
results for the samples collected in April 1992, on
and around the Tatum Salt Dome, in Lamar County,
Mississippi.
History
Project Dribble, consisting of two nuclear ex-
plosions, and Project Miracle Play, consisting of two
non-nuclear gas explosions, were conducted in the
Tatum Salt Dome, near Baxterville, Lamar County,
Mississippi, between 1964 and 1970. The general
area is depicted in Figure 1. This area is called the
Tatum Dome Test Area (Figure 2) and contains
approximately 1,470 acres located in Sections 11,
12,13 and 14, Township 2 North, Range 16 West.
Event Date Name
Ixpe
10-22-64 Salmon Nuclear
12-03-66 Sterling Nuclear
02-02-69 Diode Tube Gas
04-19-70 Humid Water Gas
Yield Hctt
5.3
0.38
0.32
0.32
These tests were part of the Vela Uniform
program of the U.S. Atomic Energy Commission
(now the DOE). The purpose of the tests was to
measure and evaluate the phenomena of seismic
waves that are induced from the explosions as com-
pared to those that occur naturally from earthquakes.
The first explosion, the Salmon Event, created
a cavity in the Tatum Salt Dome that was used for the
other three explosions. The top of the cavity is 1,160
feet (360 m) below the top of the salt dome. The top
of the salt dome is another 1,500 feet (460 m) below
the land surface (Figure 3).
At the Project Dribble site, disposal of drilling
muds and fluids near surface ground zero (SGZ)
resulted in onsite tritium (3H) contamination of shal-
low ground water and the surficial aquifer. The
shallow ground water, between 4 and 10 feet (1.2 and
3 m) deep, and the surficial aquifer that is approxi-
mately 30 feet (9 m) below the surface both consist
of non-potable water.
Tritium contamination has also been detected
in the potable water Local Aquifer which is at a depth
of 200 feet (62 m). The 3H appears to be migrating
down the exterior of the sampling well (HM-L)
casing from the surficial aquifer above. Well HM-L
is located very close to the SGZ and the well casing
penetrates the contaminated surficial aquifer. No
contamination has been detected in a second Local
Aquifer sampling well (HM-L2), located approxi-
mately 1600 feet (480 m) from HM-L. All 3H
contamination is less than the concentration speci-
fied in the National Interim Primary Drinking Water
Regulations (40CFR141). There is no indication
from ground and surface water monitoring that any
radioactivity is presently escaping from the
test cavity.
Following each explosion event, the near-off-
site area was closely monitored by the U.S. Public
Health Service (PHS). The radiological monitoring
became the responsibility of EPA at its inception in
1970. The EPA radiological monitoring is a continu-
ing responsibility. From 1964 to the present, neither
the EPA nor the PHS has detected any contamination
offsite resulting from the Tatum Dome experiments.
Monitoring Results: Historical Summary
After site cleanup activities in 1971-72, the
LTHMP was instituted. In this program, all potable
aquifers, many individual wells, public water sup-
plies, and some surface waters in the Tatum Salt
Dome area have been sampled and analyzed for
-------
Prentiss
*«.
Monticello
Brookhaven
Seminary
Bassfield \ J Moselle
Eatonyille
Runnelstown
Bunker Sumral!
Hill
Hattiesburg Richton
*~<
98
Beaumont
Brooklyn
MISSISSIPPI
" 'Touis'lANA
Varnado 4
Bogalusa ^
\ A Picayune
Major Highway
Test Site, SGZ
Figure 1. General site location of Project Dribble.
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All tritium contamination is found
within this circle with a radius of
1400 feet (430m)
TATUM DOME TEST AREA
BOUNDARY
T
en
JD
1
CVJ
X
2
Q.
Q.
CO
I
r Overflow
I Pond
300
approx. 1 1/2 miles
SCALE IN FEET
1000 2000 3000
4000 5000
N
500 1000
SCALE IN METERS
51S4gr93NRD-a
Figure 2. Topographic map of the Tatum Dome Test Area showing the Surface Ground Zero and outline of
Salt Dome at 2,700 feet (830 m) below land surface.
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CITRONELLE
AQUIFER
HALF MOON CREEK
ALLUVIALAQUIFER
WELL
HT-2
GROUND
SURFACE
-^^ili^i LOCAL AQUIFER
r.:.;.:.:.:.:.:.:.:.:I;T;T;!;;;;::;i;i;;:i::;:;;;;: AQUIFER 2A
::;:;:::;:::;:;:;;;:;:;rennn:!:;ii:i:!:i = ; = : = ::i:i:i = il AQUIFER 2B
AQUIFER 3A
AQUIFER 3B
ANHYDRITE
PS-1
PS-1W
PS-2W
TEST CAVITY
SALT DOME*
AQUIFER 5
HIGHLY
RADIOACTIVE,
MATERIAL
FLUID LEVEL
RECRYSTALLIZED
MELT PUDDLE
LIMESTONE
SANDSTONE
*The test cavity contains fission and activation products from the detonations plus
10,770 cubic yards of radioactive, contaminated soils and 1,305,000 gallons of
contaminated fluids and water from surface cleanup.
5154gr93NRO-3
Figure 3. Test cavity and aquifers.
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tritium and for any detectable gamma-emitting ra-
dioisotopes.
A special study was conducted in 1977-78
because of irregularities in tritium results in onsite
samplings from a pond near SGZ (Half Moon Creek
Overflow). To determine the source and extent of
contamination, a grid design was used to locate 171
shallow holes that were drilled into the Surficial
Aquifer ground water. From the tritium results of the
samples collected from these holes, a set of LTHMP
holes was selected and added to the LTHMP sam-
pling design. Tritium levels in the Surficial Aquifer
ground water have shown large fluctuations due to
local rainfall. In general, the concentrations con-
tinue to decrease. Decreasing trends, representative
of those sampling wells with the highest tritium
concentrations from the Local Aquifer (HM-L), the
Surficial Aquifer (HM-S) and the surface ground
water (HMH-1, HMH-2, HMH-5) are shown in
Figure 4.
Concern regarding possible health effects at-
tributable to the two nuclear detonations conducted
in the Tatum Salt Dome caused EPA to increase the
scope of the radiological monitoring activities in
1990 to include the following:
a. Urine samples from nearby residents.
b. Vegetables and soil samples from local
gardens.
c. Water samples from additional residen-
tial wells.
d. Milk samples from goats and cows.
e. Atmospheric moisture monitoring.
f. Atmospheric particulate monitoring.
g. Deer, turkey, catfish, and turtle tissue samples
from the vicinity of SGZ.
h. Soil, sediment, and vegetation sampling
in the vicinity of SGZ.
i. Water samples for non-radiological analysis
(volatile organics, semi-volatile organics,
pesticides, and heavy metals).
j. Cow tissue samples.
k. Goat tissue samples.
1. Five additional onsite shallow ground-
water monitoring holes.
In all of the 1990 off site samples, including the
human bipassay, no radioactive materials from the
Tatum Dome Test Area were detected. Tritium
contamination was detected in some water samples
taken close to SGZ. Although the water samples
were collected from non-potable sources, the con-
centrations met the EPA radionuclide criteria for
drinking water. No other radioactive material above
background was detected in any sample. All tritium
contamination was detected within a 1,400-foot
(430 m) radius of SGZ. The analysis of water samples
taken in the vicinity of SGZ for nonradioactive
hazardous materials revealed very low-level concen-
trations of a few organic chemical contaminants of
unknown origin. No health effects would be ex-
pected from the contaminants at the concentrations
found.
The 1990 study is described in the EPA report,
"Onsite and Offsite Environmental Monitoring Re-
port: Radiation Monitoring Around Tatum Salt
Dome, Lamar County, Mississippi, April 1990"
(Thom6 et al., 1990). All analytical data resulting
from the LTHMP and other radiological monitoring
programs are published annually in EPA's "Offsite
Environmental Monitoring Report: Radiation Moni-
toring Around United States Nuclear Test
Areas " These reports have been published each
calendar year since the tests were conducted.
Calendar Year 1992 Monitoring Results
In April 1992, EMSL-LV conducted environ-
mental sampling on and around the Tatum Dome
Test Area. The locations of all sampling sites are
shown in Figures 5 and 6. Sampling also included
three locations in Columbia, MS, not shown in Fig-
ure 6. The sampling results are discussed in the
following sections.
Water
Much emphasis is placed on tritium analysis of
ground-water samples. Following an underground
nuclear test, most of the radioactive materials that are
created decay very quickly. Most of those remaining
are captured in the molten rock created by the explo-
sion and in the surrounding rock itself. Tritium,
which is naturally occurring and is also a product of
nuclear explosions, is a radioactive form of hydro-
gen. It becomes incorporated into water molecules
and moves with the ground water flow. For this
reason, tritium is used as an indicator of the possible
migration of radioactive materials created from
nuclear explosions.
In April 1992, the HMH holes were sampled
and then pumped dry. On the following day tritium
samples were again collected. Also, according to
standard procedure, the HM wells were pumped
steadily with a sample being collected at the initia-
tion of pumping and then at one-half hour intervals
until the pH and conductivity stabilized. One-half
hour after reaching stability, one additional sample
was collected. Two samples were taken on succes-
sive days from Half Moon Creek, Half Moon Creek
Overflow, and the Pond West of SGZ. All other
locations were sampled once. Additional residential
water samples were collected at the request of five
residents.
-------
Tritium in Water, Well HMH-1
Tatum Dome Test Area
3*
0
**"
c
to
*rf
£
c
8
c
s
500UUO
450000 -
400000 -
350000 '
300000 -
250000 -
200000 -
150000-
100000-
50000 -
0
c
I
1978
1
f
it
q
I
o
\
.-&
''' ^ B o
DD--D--D' b-'*" "^ D "~B B"""B"B
1 1 f 1 1
1980 1982 1984 1986 1988 1990 1992
Year
Tritium in Water, Well HMH-2
Tatum Dome Test Area
20UUUU
200000 ~
O 150000-
"JT
o
'g 100000-
c
0)
o
e
0 50000 -
O
0 "1
g
k
n rj^
' *x» PI *' ""O
--A B -a' Q-- p .n. B a
a %°a-"" 'a-* ° i5 D a H
i i t i i i i i i i i i i i i
0 1978 1980 1982 1984 1986 1988 1990 1992
Year
Figure 4. Plots of tritium concentrations vs. time. (Replicate sampling in a given year is represented by
multiple squares.)
-------
o
U
Tritium in Water, Well HM-L
Tatum Dome Test Area
5
o
fl
o
?
(0
^
c
o
c
o
u
JUUU -
2800 -
-
2600-
2400 -
2200 -
2000 -
.
1800 -
1600 -
1400-
1200-
"
1000 -
800 |
f
d' \
\
\
..--P
&-'""
\
X*v **' %
"J-f ^ x
I I I I I I I I I
1980 1982 1984 1986 1988 1!
9 D ,-D
LJ*
B i
i i
390 199
Year
(Depth = 200')
Tritium in Water, Well HM-S
Tatum Dome Test Area
30000
25000 -
O 20000 ~
C
2 15000
2
c
8 10000
5000 ~
fl
..... o..
i i i i i i r i i i i i
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992
Year
(Depth = 30')
Figure 4. (Continued)
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Tritium in Water, Well HMH-5
Tatum Dome Test Area
X-
la
^JJ
g
1
S
fl)
§
O
12000-
10000-
8000-
6000-
4000-
2000-
f
% *
« f
q
% .'
* i
«
\ *
% *
% *
Q
~U
I
? \ /
g /
i \ !
* i ii
i i ii
>i ii
ii ii
Figure 4. (Continued)
Sample Analysis Procedures
The procedures for analyzing samples col-
lected for this report were described by Johns et al.
(EPA 1979) and are summarized in Appendix A.
These include gamma spectral analysis and radio-
chemical analysis for strontium, tritium, and pluto-
nium and uranium. The procedures are based on
standard methodology for given analytical proce-
dures. Two methods for tritium analysis were per-
formedconventional and electrolytic enrichment
The samples were initially analyzed by the conven-
tional method. If the tritium result was less than 700
pCi/L, the sample was then analyzed by the electro-
lytic enrichment method which lowers the minimum
detectableconcentration(MDQ from approximately
300 pCi/L to 10 pO/L. In the data tables (Appendix
4), results obtained using the conventional method
are denoted by
-------
^
Well HM-L2
HMH-16g
Former
Decontamination
Pad Location
HMH-15 HMH-14 H"H.
HMH-12 \ Bridge
\
i
HMH-5 \
Half
HMH-101\ M0c?enek
Overflow
X^^P 11*11 i i
HM-3JKHM-2B
HM-LWP-1 1HMH-11
HMH-2 BHMH-9
Hunting
Club Well
Scale in Meters
*=
100
\
*
200
Location/water sample
0 Surface Ground Zero
N
IWellHT-2C
1391grNR093-S
Figure 5. Locations on the Tatum Dome Test Area sampled in 1992.
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B. Dennis
M. Dennis
Columbia City Little Creek #1 _,
Well 64B Lee Anderson -,
Tim L. Bilbo -,
Yancy Saucier|
Philip Gibson -|
Hewie Gipson
Lower Little Creek #2
Gil Ray's Crawfish Pond
G. Kelly
iWillie Burge
I r~Joe Burge
Herman Gipson
Howard Smith
Howard
Smith Pond
Salt Dome Timber Co.
A.C.
Mills
Roy Mills
B.Chambliss R.King
Anderson's Pond 3
B.R. Ande'rson"
Dennis
Saucier
P.T. Lee
R.H. Anderson
E.Cox
W.H. Noble Jr.
G.W. Anderson
Noble's Pond
Sylvester Graham
. Rushing
Purvis City Well
**>
G.Ray
"E.J. Smith
Lee L. Saul
S. Powers and
_ B. Bond (2)
Noble's Quail
House
Tatum Hunting Club
Regina Anderson
Ray Danielsp R.L.Anderson Sr.
Daniel's Rsh
Pond Well #2
R.L. Anderson Jr.
W. Daniel Jr.
Baxterville
City Well
Lumberton
City Well 2
Surface Ground Zero
Water Sampling Locations
j£f:j Tatum Dome Test Area
Scale in Miles
1 2
01234
Scale in Kilometers
Figure 6. Offsite locations sampled in 1992.
10
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CONCLUSION
No radioactive materials from the Tatum Dome wells located near SGZ. Although this water is not
Test Area were detected in any of the offsite water available to the public nor is it fit for human con-
samples. Onsite, tritium was the only radioactive sumption because of its brackishness, the tritium
contaminant detected. The tritium contamination concentrations are well below those defined in the
was found in brackish water collected from shallow EPA National Interim Primary Drinking WaterRegu-
lations (40CFR141).
11
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REFERENCES
1. A Guide for Environmental Radiological Sur-
veillance at U.S. Dept. of Energy Installations, July
1981, Office of Operational Safety Report, U.S.
DOE(DOE/EP-0023).
2. Federal Register, Vol. 41, title 40, Part 141,
July 9, 1976, National Interim Primary Drinking
Water Regulations.
3. Johns,?. 1979. Radiochemical and Analytical
Procedures for Analysis of Environmental Samples.
U.S. EPA, (EMSL-LV-0539-17-1979).
4. Shleien, B. and M. Terpilak. 1984. The Health
Physics and Radiological Health Handbook. Nucleon
Lectern Associates.
5. Thome", D. J., C. F. Fontana, and C. F. Costa.
1990. Onsite and off site environmental monitoring
report: radiation monitoring around Tatum Salt Dome,
Lamar County, Mississippi. Las Vegas, NV: U.S.
Environmental Protection Agency, Environmental
Monitoring Systems Laboratory; EPA/600/4-91/005.
12
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GLOSSARY OF TERMS
Background Radiation
The radiation in man's natural environment,
including cosmic rays and radiation from naturally-
occurring radioactive elements, both outside and
inside the bodies of humans and animals. It is also
called natural radiation. The usually quoted average
individual exposure from background radiation is
125 millirem per year in mid-latitudes at sea level
(Shleien and Terpilak 1984).
Curie (Ci)
The basic unit used to describe the rate of
radioactive disintegration. The curie is equal to 37
billion disintegrations per second, which is approxi-
mately the rate of decay of 1 gram of radium; named
for Marie and Pierre Curie, who discovered radium
in 1898.
Isotope
One of two or more atoms with the same
number of protons, but different numbers of neutrons
in their nuclei. Thus 12C, I3C, and 14C are isotopes of
the element carbon, the numbers denoting the ap-
proximate atomic weights. Isotopes have very nearly
the same chemical properties, but often different
physical properties (for example 12C and 13C are
stable, I4C is radioactive).
Minimum Detectable Concentration (MDC)
The smallest amount of radioactivity that can
be reliably detected with a probability of Type I and
Type n errors at 5 percent each (DOE 1981).
Offsite
All areas exclusive of the Tatum Dome Test
Area.
Onsite
In this report refers to the area within the Tatum
Dome Test Area.
Shallow ground water
Water found near the soil surface, caused by
precipitation infiltration of the soil. This shallow
ground water is not an aquifer.
Surficial Aquifer
The ground water layer located closest to the
surface, generally at a depth of approximately 30 feet
at SGZ.
Tritium
A radioactive isotope of hydrogen that decays
by beta emission. Its half-life is about 12.5 years.
Type I Error
The statistical error of accepting the presence
of radioactivity when none is present. Sometimes
called alpha error.
Type II Error
The statistical error of failing to recognize the
presence of radioactivity when it is present. Some-
times called beta error.
13
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APPENDIX A
SUMMARY OF ANALYTICAL PROCEDURES
TYPE OF
ANALYSIS
ANALYTICAL
EQUIPMENT
COUNTING
PERIOD (MIN)
ANALYTICAL
PROCEDURES
SAMPLE
SIZE
APPROXIMATE
DETECTION LIMIT1
Ge(Hp)or IG or GE(Li) detector Individual air Radionudide concen-
Ge(U) calibrated at 0.5 keV/ filters, 30 min; 100 (ration quantified from
Gamma channel (0.04 to 2 min for milk, water, gamma spectral data
Spedrometryb MeV range). suspended solids, by on-line computer
program. Radionu-
dides in air filer com-
posite samples are
identified only.
3.5 L for liquids and Generaly 5 pCM. for most
common fallout
radionudides in routine
mlk and water samples in
a simple spectrum.
*>St
Low background
thin-window, gas-
flow, proportional
counter.
50 Chemical separation by
ion exchange. Separated
sample counted succes-
sively; activity calculated
by simultaneous solution
of equations.
LOLformilkor
water; 0.1 to 1 kg
for tissue.
2pCi/L
Automatic liquid
scintillation counter
with output printer.
300 Sample prepared by
distillation.
4 ml for water; 10 300to700pCi/l
ml for urine; 50 g
for tissue.
3H+ Automatic liquid
(Enrichment) scintillation counter
with output printer.
300 Sample concentrated by 250 ml for water.
electrolysis followed by
distillation.
10pCil
234.23S.a8u
AJpha spectrometer
with siicon surface
barrier detectors
operated in vacuum
chambers.
1000(04000
Water sample or acid-
digested filter or tissue
samples separated by ion
exchange, electroplated
on stainless steeU
planchet
1.0L for water; 0.1
to1 kg for tissue.
In water samples
0.08 pCi/L for ^Pu, and
0.05 pCM. for 2H23MMU
' The detection limit is defined as the smattest amount of radioactivity that can be reliably detected, i. e.. probability of Type I and
Type II error at 5% each.
" Gamma spectrometry using either an intrinsic germanium (Ge(Hp)), or Ihhkim-drifted germanium diode (Ge(LJ)) detector.
14
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APPENDIX B
RESULTS FOR WATER SAMPLES COLLECTED IN APRIL, 1992
CONCENTRATION ± 2 S.D. IN pCI/L
(MINIMUM DETECTABLE CONCENTRATION [MDC])
SAMPLE
LOCATION
COLLECTION
DATE 1992
»Sr
2MP|J
Anderson, Billy Ray 04/27
Anderson Pond 04/27
Anderson, Regina " 04/27
Anderson, Robert Harvey 04/27
Anderson, Robert Lowell, Sr 04/27
Anderson, Robert Lowell, Jr . 04/27
Bilbo, Timothy L 04/28
Burge, Joe 04/27
Chambliss, B. 04/28
Daniels, Ray 04/29
Daniels, Webster, Jr. 04/29
Daniels -Well #2 Rsh Pond 04/29
Half Moon Creek 04/26
04/27
Half Moon Creek Overflow 04/26
04/27
Kelly Gertrude 04/27
King, Rhonda 04/27
Baxterville, MS
16 ±3*
(5)
9±3*
(4)
Not Sampled - no one home
17±4*
(6)
20 ±3*
(5)
17±3*
(4)
24 ±4*
(6)
18 ±4'
(6)
-1±3
(5)
15 ±5*
(7)
18±3*
(5)
19 ±4*
(5)
15±3*
(4)
27 ±4*
(6)
690110*
(5)
587 ±9*
(5)
-1±3
(5)
20 ±4*
(6)
(Continued)
15
-------
APPENDIX B Continued
RESULTS FOR WATER
SAMPLES
COLLECTED IN APRIL, 1992
CONCENTRATION ± 2 S.D. IN pCI/L
(MINIMUM DETECTABLE CONCENTRATION [MDC])
SAMPLE
LOCATION
Lee.P.T.
Little Creek #1
Lower Little Creek #2
Mills, A. C.
Mills, Roy
Nobles Pond
Nobles Quail House
Noble, W.H., Jr.
Pond West of GZ
REECo Pit Drainage-A
REECo Pit Drainage-B
REECo Pit Drainage-C
Salt Dome Hunting Club
Salt Dome Timber Co.
Saucier, Dennis
COLLECTION
DATE 1992 5H 3H+ "Sr
04/27
04/28
04/28
04/27
04/29
04/27
04/27
04/27
04/26
04/27
04/26
04/26
04/26
04/29
04/27
04/28
Baxterville, MS (Cont)
45 ±4*
(6)
20 ±3*
(5)
18±3*
(4)
-1±3
(5)
18 ±4*
(6)
18±4*
(6)
59 ±11*
(17)
37 ±4*
(5)
14 ±4*
(6)
16 ±4*
(6)
31 ±3*
(5)
1320 ±230*
(350)
556 + 8*
(5)
24 + 3*
(5)
27 + 4*
(5)
41 ±5*
(7)
23>pi| 23&*440p|j
(Continued)
16
-------
APPENDIX B Continued
RESULTS FOR WATER SAMPLES COLLECTED IN APRIL, 1992
CONCENTRATION ± 2 S.D. IN pCI/L
(MINIMUM DETECTABLE CONCENTRATION [MDC])
SAMPLE COLLECTION
LOCATION DATE 1992 JH JH+ "Sr °»Pu
Baxterville,MS(Cont)
Saucier, Wilma&Yancy 04/28 3 ±3
(6)
Well Ascot 2 04/28 Not Sampled - No Access
Well City 04/29 26 ±5*
(7)
WellE-7 04/28 6 ±4*
(6)
WellHM-1 04/27 2 ±3
(5)
04/27 . 0±3
(5)
WellHM-2A 04/27 -2 ±4
(7)
04/27 -2 ±3
(5)
WellHM-2B 04/27 2 ±4
(6)
04/27 -4 ±3
(5)
WellHM-3 04/27 3 ±4
(6)
04/27 3±3
(6)
04/27 -1±3
(5)
04/27 -1±3
(5)
WellHM-L 04/27 1310 ±230*
(350)
04/27 611 ±9'
(5) .
04/27 733 ±10'
(6)
04/27 727±11'
(7)
(Continued)
17
-------
APPENDIX B Continued
RESULTS FOR WATER SAMPLES COLLECTED IN APRIL, 1992
SAMPLE
LOCATION
COLLECTION
DATE 1992 *H
CONCENTRATION ± 2 S.D. IN pCI/L
(MINIMUM DETECTABLE CONCENTRATION [MDC])
3H+
Well HM-L2
Well HM-S
Well HMH-1
Well HMH-2
Well HMH-3
Well HMH-4
Well HMH-5
Well HMH-6
Well HMH-7
04/27
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
Baxterville,MS(Cont.)
2±4
(7)
-3±4
(6)
7070 ±290*
(350)
67201280*
(350)
58301280*
(350)
14,4001350*
(350)
51201270*
(350)
12,8001340*
(350)
18601230*
(350)
20601240*
(350)
1113*
(4)
2714*
(5)
1313*
(5)
1513*
(4)
7214*
(4)
57 + 5*
(6)
Not Sampled - Under Water
Well HMH-8
04/26
04/27
1313*
(5)
2014*
(6)
(Continued)
18
-------
APPENDIX
B Continued
RESULTS FOR WATER SAMPLES
COLLECTED IN APRIL, 1992
CONCENTRATION ± 2 S.D. IN pCI/L
(MINIMUM DETECTABLE CONCENTRATION [MDC])
SAMPLE
LOCATION
Well HMH-9
WellHMH-10
WellHMH-11
Well HMH-12
Well HMH-13
Well HMH-14
WellHMH-15
WellHMH-16
Well HT-2C
Well HT-4
Well HT-5
COLLECTION
DATE 1992 JH JH+ "°Sr
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/26
04/27
04/28
04/28
04/28
Baxterville,MS,(Cont.)
87 ±4'
(5)
91 ±5*
(6)
298 ±7*
(5)
256 ±8*
(7)
23±4'
(6)
28 ±4*
(6)
12 ±3'
(5)
12 ±5'
(8)
11 ±3*
(5)
8±4*
(6)
Not Sampled -Well Dry
12 ±4'
(6)
9±5'
(7)
75 ±5*
(6)
117±6*
(6)
9 ±3*
(5)
6±5
(8)
1±3
(6)
23tpij 23ft*240p(j
(Continued)
19
-------
APPENDIX B Continued
RESULTS FOR
WATER SAMPLES COLLECTED
IN APRIL, 1992
CONCENTRATION ± 2 S.O. IN pCI/L
(MINIMUM DETECTABLE CONCENTRATION [MDC])
SAMPLE
LOCATION
Dennis, Buddy
Dennis, Marvin
Well 64B City
Anderson, G. W.
Anderson, Lee L
Bond, Bradley K.
Cox, Eddie
COLLECTION
DATE 1992 3H
04/28
04/28
. 04/28
04/27
04/29
04/29
04/27
Gil Ray's Crawfish Pond 04/27
Gipson, Herman
Gipson, Howie'"
Gipson, Phillip'"
Graham, Sylvester
Hartfield, Ray*
Powers, Sharon
Rushing, Debra
Saul, Lee L
04/28
04/27
04/27
04/28
04/28
04/29
04/28
04/28
5H+ "Sr ^Pu
Columbia, MS
21 ±5*
(9)
14 ±6*
0)
7±4*
(7)
Lumberton, MS
19 ±5*
(8)
20 ±3*
(4)
16 ±5*
(8)
28 ±4'
(5)
7±3*
(5)
-2 ±3
(5)
23 ±5* -0.1 2 ± 0.56 -0.0067 ± 0.01 35
(8) (1.27) (0.0271)
21 ±7' -0.2610.66 -0.01 07 ±0.01 29
(11) (1.44) (0.0265)
-2 ±4
(6)
-3 ±8 0.8910.65 -0.002010.0070
(13) (1.37) (0.0094)
1315'
(8)
27 ± 4*
(5)
013
(6)
a».2«pu
-0.003410.0067
(0.0157)
-0.002210.0043
(0.0100)
0.004010.0081
(0.0094)
(Continued)
20
-------
APPENDIX B Continued
RESULTS FOR WATER SAMPLES COLLECTED IN APRIL, 1992
SAMPLE
LOCATION
CONCENTRATION ± 2 S.D. IN pCI/L
(MINIMUM DETECTABLE CONCENTRATION [MDC])
COLLECTION
DATE 1992
3H
3H+
"Sr
Smith, E.J.I*
Smith, Howard
Smith, Howard - Pond
Thompson, Roswell1"
04/28
04/28
04/29
04/28
Lumberton, MS, (Cont.)
18 ±8*
(13)
2±4
(7)
12 ±6*
(10)
28 ±9*
(15)
0.38 ±0.67
(1.42)
0.29 ±0.70
(1.34)
-0.0044 ±0.0152 0± 0.0062
(0.0270) (0.0102)
0.0034 ±0.0116 0.0070 ±0.0164
(0.0156) (0.0221)
Well 2 City 04/29
Surge, Willie Ray & Graco 04/27
City Supply 04/27
Gil, Ray-House Well 04/27
2 + 4
(6)
Purvis, MS
15 ±5*
(8)
3±4
(6)
-3 ±3
(5)
* Concentration is greater than the minimum detectable concentration (MDC).
<> Uranium analysis results were as follows:
SAMPLE
LOCATION
COLLECTION
DATE 1992
CONCENTRATION ± 2 S.D. IN pCI/L
(MINIMUM DETECTABLE CONCENTRATION [MDC])
Gipson, Hewie 04/27 0.038 ±0.0237* -0.0021 ±0.0125 0.0209 ±0.0145*
(0.0257) (0.0217) (0.0097)
Gipson, Phillip 04/27 -0.0030 ± 0.0324 0'.0150 ±0.0200 0.0180 ±0.0171*
(0.0542) (0.0243) (0.0140)
Hartfield, Ray 04/28 0.0989 ± 0.0358* -0.0020 ± 0.0088 0.0573 ± 0.0223*
(0.0357) (0.0160) (0.0092)
Smith, E.J. 04/28 0.0234 ± 0.0237 -0.0085 ±0.0104 0.0170±0.0159
(0.0313) (0.0222) (0.0172)
Thompson, Roswell 04/28 0.1380 ±0.0352* 0.0041 ± 0.0083 0.1170 ±0.0324*
(0.0096) (0.0096) (0.0096)
21
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