NERC-LV-539-1
ENVIRONMENTAL MONITORING REPORT FOR THE NEVADA TEST SITE
January-December 1971
by the
National Environmental Research Center
U.S. ENVIRONMENTAL PROTECTION AGENCY
Las Vegas, Nevada
Published September 1972
This work performed under a Memorandum of
Understanding No. AT(26-l)-539
for the
U. S. ATOMIC ENERGY COMMISSION
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This report was prepared as an account of work sponsored
by the United States Government. Neither the United States
nor the United States Atomic Energy Commission, nor any of
their employees, nor any of their contractors, subcon-
tractors, or their employees, makes any warranty, express
or implied, or assumes any legal liability or responsibility
for the accuracy, completeness or usefulness of any infor-
mation, apparatus, product or process disclosed, or repre-
sents that its use would not infringe privately-owned rights.
Available from the National Technical Information Service,
U. S. Department of Commerce,
Springfield, VA. 22151
Price: paper copy $3.00; microfiche $.95.
077
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NERC-LV-539-1
ENVIRONMENTAL MONITORING REPORT FOR THE NEVADA TEST SITE
January-December 1971
by the
National Environmental Research Center*
U.S. ENVIRONMENTAL PROTECTION AGENCY
Las Vegas, Nevada
Published September 1972
This work performed under a Memorandum of
Understanding No. AT(26-1)-539
for the
U. S. ATOMIC ENERGY COMMISSION
*At the time this vork was performed, the Center was named the Western
Environmental Research Laboratory.
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TABLE OF CONTENTS
Page
LIST OF TABLES ii
LIST OF FIGURES ii
INTRODUCTION 1
SUMMARY 2
MONITORING DATA COLLECTION, ANALYSIS, AND EVALUATION 4
Air Sampling 6
Dosimetry 8
Milk Sampling 9
Water Sampling 14
REFERENCES 17
DISTRIBUTION
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LIST OF TABLES
Table Page
1. 1971 Summary of Analytical Results for the Air Surveil- 26
lance Network
2. 1971 Summary of Background Radiation Doses for the Dosim- 61
etry Network
3. Anomalous TLD Readings in 1971 64
4. Analytical Procedures for Milk and Water 65
5. 1971 Summary of Analytical Results for the Milk Surveil- 67
lance Network
6. 1971 Summary of Analytical Results for the Water Surveil- 74
lance Network
7. Results of Special Water Analysis 87
LIST OF FIGURES
Figure
1. Air Surveillance Network 19
2. Radioactivity Trends in Air and Milk Samples Collected at 20
Duckwater, Nevada, During 1971
3. Dosimetry Network 21
4. Milk Surveillance Network 22
5. Standby Milk Surveillance Network 23
6. Water Surveillance Network 24
7. Water Surveillance Network - Las Vegas Valley 25
ii
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INTRODUCTION
In accordance with a Memorandum of Understanding between the U. S. Atomic
Energy Commission (AEG) and the Environmental Protection Agency (EPA) the
National Environmental Research Center-Las Vegas (NERC-LV) conducts an off-
site radiological safety program in support of nuclear testing sponsored
by the AEC at the Nevada Test Site (NTS), by the Space Nuclear Systems
Office at the Nuclear Rocket Development Station (which lies within the
NTS), and by the AEC at other designated testing sites.
This report summarizes the surveillance data of the program conducted dur-
ing Calendar Year 1971 around the NTS. The analytical results of radio-
logical monitoring and environmental sampling performed in support of off-
NTS tests, such as the Cannikin Event on Amchitka Island, Alaska, and
Project Rulison, near Grand Junction, Colorado, are summarized separ-
ately C1'2).
For the NTS, the off-site area is defined as that area beyond the site
boundary and adjacent restricted areas such as the Tonopah Test Range and
the Nellis Air Force Range. For simplicity, these combined areas are re-
ferred to in this report as the Test Range Complex.
Note: At the time this work was accomplished, the Center was named the
Western Environmental Research Laboratory. On July 17, 1972, it was
designated as a National Environmental Research Center.
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SUMMARY
Surveillance of the Nevada Test Site environs during 1971 showed that the
concentrations of radioactivity and levels of radiation in the environment
were within the Radiation Protection Standards of the Atomic Energy Com-
mission. The surveillance data show that most of the environmental radio-
activity in the NTS environs was due to naturally occurring radionuclides
and world-wide fallout.
Following one test at the Nevada Test Site during this report period,
radioactivity was detected beyond the Test Range Complex. The Diagonal
Line Event, an underground nuclear detonation conducted at 1215 hours PST
on November 24, 1971, began to seep gaseous radioactivity from the ground
at H+4 hours, after the NERC-LV ground monitors and aircraft had been
released from their missions. The ground monitors were again deployed off-
site downwind of surface ground zero at H+19.5 hours, but no radioactivity was
detected by them or by the surveillance networks. However, EG&G aircraft
detected the Diagonal Line effluent over the Amargosa Desert southwest of the
(3)
NTS on November 25, 1971. According to an EG&G summary report of the event ,
the radioactivity in the cloud was identified at 135Xe, 88Kr and 88Rb. The
highest gamma exposure rate measured between H+18.8 to IH-21.7 hours by aircraft
during a survey of the cloud periphery and one in-cloud pass was 0.1 mR/h.
This reading was observed at an elevation of 500 feet over the NTS terrain,
2.0 nautical miles south of the event area.
Although the routine monitoring and sampling networks of NERC-LV did not
detect radioactivity from nuclear tests conducted during 1971, radioiodine
released from the Baneberry Event, an underground nuclear detonation on
December 18, 1970, was detected in milk samples collected at the McCurdy
Ranch, Springdale, Nevada, in January and February 1971 as part of the
special surveillance program for this event. The radiation dose to the
thyroid of the youngest individual drinking the McCurdy milk was estimated
to be 85 mrem during 1971 (total potential dose including exposure during
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December 1970 was 130 mrem). This was 17% of the Radiation Protection
Standard of the AEG Manual, Chapter 0524 (500 mrem/a) for a representative
sample of the exposed population. From the measurements of radioiodine
in snow samples collected in December 1970 immediately following Baneberry,
sheepherders working north of the NTS and using snow for cooking and drink-
ing purposes were estimated to have received a total radiation dose to the
thyroid of 500 mrem plus or minus a factor of three. Since the use of
snow by sheepherders was not discovered until February 1971 and the con-
taminated snow was diluted with snowfall subsequent to Baneberry, the
portion of the total dose which occurred in 1971, if any, could not be
estimated.
89 90
Increases in gross beta concentrations in air and increases in Sr, Sr,
137
and Cs in milk during the late spring and early summer were attributed
to the seasonal trend of world-wide fallout. Increases in the gross beta
concentrations and measurements of fresh fission products in the air dur-
ing November at many of the Air Surveillance Network Stations were attri-
buted to the nuclear detonation on November 18, 1971, by the People's
Republic of China.
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MONITORING DATA COLLECTION, ANALYSIS, AND EVALUATION
A
The off-site radiological safety program for the NTS consists of contin-
uously operated dosimetry and air sampling networks and scheduled collect-
ions of milk and water samples at locations surrounding the NTS. To sup-
plement these networks, before each nuclear test mobile monitors were
positioned in the off-site areas most likely to be affected by a possible
release of radioactive material. These monitors, equipped with radiation
survey instruments, gamma-rate recorders, thermoluminescent dosimeters,
portable air samplers, and supplies for collecting environmental samples,
were prepared to conduct a monitoring program directed from the NTS Control
Point by two-way radio communications. In addition, for each event at the
NTS, a U. S. Air Force aircraft with two NERC-LV monitors equipped with
portable radiation survey instruments was airborne over surface ground zero
to detect and track any radioactive effluent. Two NERC-LV cloud sampling
and tracking aircraft were also available to obtain in-cloud samples,
assess total cloud volume, and provide long-range tracking in the event
of a radioactive release.
To assess the plutonium content of soil in areas surrounding the NTS, a
special soil study was begun. The results of this study will be reported
separately.
No radioactivity from nuclear testing conducted during this report period
at the NTS was detected beyond the Test Range Complex by NERC-LV surveil-
lance networks, monitors or aircraft. However, radioactivity released
by the Diagonal Line Event of November 24, 1971, was detected by EG&G air-
craft, and radioactivity released by the Baneberry Event of December 18,
1970, was observed in milk samples collected in January and February 1972.
The analytical results of the surveillance networks and of the milk sam-
ples collected during this report period for the Baneberry Event are
summarized in the following sections of this report.
4
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The Diagonal, Line Event, an underground nuclear detonation at 1215 PST
on November 24, 1971, began to seep gaseous radioactivity from the ground
at H+4 hours, after the NERC-LV ground monitors and aircraft had been
released from their missions. The ground monitors were again deployed off-
site downwind of the event at H+19.5 hours, but no radioactivity was detected
by them or by NERC-LV surveillance networks. EG&G aircraft detected the
Diagonal Line effluent over the Amargosa Desert southwest of the NTS on No-
vember 25, 1971, between H+18.8 and W-21.7 hours. According to an EG&G sum-
mary report of the event , the radioactivity in the cloud was identified
as 135Xe, 88Kr, and 88Rb. The highest gamma exposure rate measured during
a survey of the cloud periphery and one in-cloud pass was 0.1 mR/h. This
reading was observed at an elevation of 500 feet over the NTS terrain,
2.0 nautical miles south of the event area.
Radioiodine released from the Baneberry Event, an underground nuclear
detonation on December 18, 1970, was detected in milk samples collected
at the McCurdy Ranch, Springdale, Nevada, in January and February 1971 as
part of the special surveillance program for this event. The radiation
dose to the thyroid of the youngest individual drinking the McCurdy milk
was estimated to be 85 mrera during 1971 (total potential dose including
exposure during December 1970 was 130 mrem). This was 17% of the Radiation
Protection Standard of the AEC Manual, Chapter 0524 (500 mrem/a) for a
representative sample of the exposed population. From the measurements
of radioiodine in snow samples collected in December 1970 immediately
following Baneberry, sheepherders working north of the NTS and using
snow for cooking and drinking purposes were estimated to have received a
total radiation dose to the thyroid of 500 mrem plus or minus a factor of
three. Since the use of snow by sheepherders was not discovered until
February 1971 and the contaminated snow was diluted with snowfall subse-
quent to Baneberry, the portion of the total dose which occurred in 1971,
if any, could not be estimated.
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Increases in gross beta concentrations in air and increases in 89Sr,
and 137Cs in milk during the late spring and early summer were attributed
to the seasonal trend of world-wide fallout. Increases in the gross beta
concentrations and measurements of fresh fission products in the air dur-
ing November at many of the Air Surveillance Network Stations were attri-
buted to the nuclear detonation on November 18, 1971, by the People's
Republic of China.
Air Sampling
The Air Surveillance Network, operated by the NERC-LV, consists of 104
active and 18 standby sampling stations located in 21 western states
(Figure 1). Samples of airborne particulates are collected continuously
at each active station on 4-inch-diameter, glass-fiber filters at a flow
rate of about 350 m^ of air per day. Samples are normally collected for
24 hours. However, at several stations operated by state health depart-
ment and other government agency personnel, they may not be collected on
weekends and holidays, resulting in 48- or 72-hour samples. Activated
charcoal cartridges directly behind the filters are used regularly for the
collection of gaseous radionuclides at 22 stations near the NTS. Charcoal
cartridges can be added to all other stations by telephone request. The
stations are operated by state health department personnel and by private
individuals through contract agreements. All air samples are mailed to
the NERC-LV unless special retrieval is arranged at selected locations in
case of a known release of radioactivity from the NTS.
The particulate filters are counted 5 minutes for gross beta radioactivity
as soon as they are received and again at 5 and 12 days after collection.
Samples are counted on gas flow proportional counters calibrated over a
range of beta energies from 0.1 to 1.8 MeV. A conservative efficiency
value of 45% (corresponding to an average maximum beta energy of 0.5 MeV)
is used for data conversion. The 5- and 12-day counts are used to extrapo-
late gross beta concentrations to mid-collection time for reporting.
Extrapolation is accomplished by computer programs and is routinely based
on a T"1'2 decay. For known releases of radioactivity the decay rate
is determined experimentally and is used in the extrapolations.
6
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Those filters with total gross beta radioactivity of 500 cpm or greater
are gamma scanned on a 4- by 4-inch sodium iodide (Tl-activated) crystal
connected to a 400-channel gamma spectrometer. Individual radionuclides
are quantitated from spectrometer data by use of a computer matrix technique.
If fresh fission products related to a NTS event are detected, radiochemi-
cal analyses, such as strontium and plutonium, are made on selected filters.
All charcoal cartridges are counted 10 minutes with a gamma spectrometer.
Data from those cartridges having a net gross gamma count rate greater than
300 cpm are analyzed by a computer matrix technique to quantitate individ-
ual radionuclides.
Table 1 presents the maximum, minimum detected and average concentrations
of gross beta radioactivity and individual radionuclides identified by
gamma spectroscopy for each location within the network during 1971. The
gross beta averages were determined for each station by averaging the sta-
tion monthly averages. Each annual average for a radionuclide detected
at a given station was derived by dividing the sum of its time-integrated
concentrations (pCi-day/m3) by 365 days. This was done assuming that
radionuclides were not present on those filters which did not exceed the
screening level of 500 cpm, or 1.4 pCi/m3 for a 0.45 counting efficiency
and normal sample volume of 350 m3. This is consistent with the AEG
Manual, Chapter 0524, which allows one to consider radionuclides to be
absent in a mixture, "if (a) the ratio of the concentration of that
radionuclide in the mixture. . .to the concentration guide for that radio-
nuclide. . .does not exceed 1/10, and (b) the sum of such ratios for all
the radionuclides considered as not present in the mixture does not ex-
ceed 1/4. . . ."(4)
As shown by Table 1, the fission products 95Zr, 106Ru, 131I, 132Te, llt0Ba,
1JtlCe, and ^^Ce were detected in varying combinations at each sampling
location. The presence of these radionuclides occurred throughout the
network following the seasonal trend expected for world-wide fallout and
a nuclear detonation by the People's Republic of China on November 18, 1971,
thus they were not considered to be associated with nuclear tests at the
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NTS. Figure 2 shows the variation in gross beta concentrations in air at
Duckwater, Nevada, during the year 1971. Data from all other stations
within the network indicated a similar pattern.
Dosimetry
The Dosimetry Network during 1971 consisted of 97 locations surrounding
the Nevada Test Site which were monitored continuously with thermolumi-
nescent dosimeters (TLD's). The locations, shown in Figure 3, are all
within a 300-mile radius of the center of the NTS and include both inhabited
and uninhabited locations. Each Dosimetry Network station was equipped
with three EG&G Model TL-12 dosimeters which were exchanged monthly. Within
the general area covered by the dosimetry stations, 60 off-site residents
also wore one TLD each. These dosimeters were exchanged at the same time
as the station dosimeters.
The TL-12 dosimeter has an internal or self-background exposure rate
equivalent to 0.7 mR/day, which limits its minimum detection to about
5 mR for a 30-day measurement period. All TLD readings were corrected to
3 Cs gamma roentgen equivalent values according to individual TLD cali-
bration factors. For purposes of this report, these units of exposure were
considered to be equivalent to whole-body gamma doses in rems.
After appropriate corrections were made for the background exposure ac-
cumulated during shipment between the laboratory and the monitoring loca-
tions, the three TLD readings were averaged. The average exposure value
for each month and station was statistically compared to values from the
past twelve months to determine whether the new value was within the
range of environmental background, or significantly greater than back-
ground. Those which were greater lead to calculations of net exposures,
whereas those which were not were pooled with the background data bank,
and the oldest value in the data bank was deleted. Values which were
statistically lower than the background range were also deleted and con-
sidered invalid measurements. Each of the 60 personnel dosimeter read-
ints was compared to the background value of the nearest station.
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Table 2 lists the maximum, minimum, and average monthly dose rates meas-
ured at each station in the network during 1971. The average dose rate
is the average of the twelve monthly rates. The annual background dose
is the product of the average dose rate and 365 days. No doses related
to nuclear testing were detected by the dosimetry network during 1971.
Station background doses ranged from 102 to 303 mrem with a network average
of 163 mrem/a. Among the 60 off-site residents who wore dosimeters con-
tinuously, no personnel doses greater than background were detected.
Several TLD's showed unexplained high readings during 1971. These values,
listed in Table 3, are considered to be anomalous readings, not true gamma
exposures. Surveys of the locations and interviews with the individuals
involved identified no sources of radiation which would produce the ex-
posures. Also, in the case of the Nuclear Engineering Company and
Tonopah stations where three TLD's were issued each month, only one or
two dosimeters read high each time. It is believed that the anomalies were
due to phenomena!associated with the TLD's rather than some external radia-
I i
tion source.
A network of 32 stationary Eberline RM-11 exposure rate recorders placed
at selected air sampling locations was used to document gamma exposure
rates at fixed locations (Figure 1). These recorders used a GM tube de-
tector with a 0.01 to 100 mR/h range and were calibrated to ±20% with a
137Cs source. The gamma exposure rates were recorded on a 30-hour strip
chart, which is exchanged and mailed to the laboratory each day. No gamma
exposure rates attributable to Nevada Test Site operations were detected
by the network of gamma rate recorders.
Milk Sampling
Milk is only one of the sources of dietary intake of environmental radio-
activity; however, it is a very convenient indicator of the general popu-
lation's intake of biologically significant radionuclide contaminants.
For this reason it is monitored on a routine basis. Few of the fission
product radionuclides become incorporated into the milk of the cow due to
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its selective metabolism. However, the ones that are incorporated are
very important from a radiological health standpoint, and since they are
preferentially transferred to the cow's milk, it is a very sensitive meas-
ure of their concentrations in the environment. The five fission product
radionuclides which commonly occur in milk are °'Sr and 90Sr, 131I, *^7Cs,
and 11+0Ba. A sixth radionuclide, 't°K, also occurs in milk at a reasonably
constant concentration of about 1200xlO~9uCi/ml. Since this is a naturally
occurring radionuclide, it was not included in the analytical results sum-
marized in this section.
The milk surveillance networks operated by the NERC-LV are the routine
Milk Surveillance Network (MSN) and the Standby Milk Surveillance Network
(SMSN). The MSN during 1971 (Figure 4) consisted of 41 different loca-
tions at which NERC-LV personnel collected one-gallon milk samples from
family cows, commercial pasteurized milk producers, Grade A raw milk
intended for pasteurization, and Grade A raw milk for local consumption.
In the event of a release of activity from the NTS, intensive sampling
would have been conducted in the affected area within 300 miles of the
NTS to assess radionuclide concentrations in milk, radiation doses that
could result from the ingestion of the milk, and the need for protective
action. Milk supplies and producers beyond 300 miles are sampled with
the SMSN.
The SMSN (Figure 5) consisted of about 185 Grade A milk processing plants
which could be requested by telephone to collect raw milk samples repre-
senting milk sheds supplying milk to the plants. Although not required
during this report period, samples from the network could have been col-
lected and mailed to the NERC-LV through the cooperation of Federal, state,
and local government agencies in the event of a release of radioactivity
at NTS or other test locations. Periodically, one sample may be collected
from each station in a given area to maintain network readiness and to
check the network's reliability. No analytical results are reported here
for the SMSN, since only one sample was received from each of several
selected locations.
10
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During 1971, 356 milk samples were collected from the MSN. Five out of
41 sampling locations were discontinued in February when the Zone 5 Route
along U. S. 40 and U. S. 93 north of McGill was terminated. One location
in California was discontinued the same month when the cow was sold. Of
the remaining 35 locations, five were alternates where milk was sometimes
obtained in the event the primary sampling point did not have milk avail-
able. Although the routine locations were scheduled for monthly col-
lection, milk could not usually be obtained at all locations in any one
month. Cows not lactating, no one home, or no milk on the day the route
monitors arrived at the ranch, were some of the reasons why some of the
samples were not collected each month. During the year, milk sampling
points also changed as cows were sold, or were otherwise unavailable for
regular milkings.
All milk samples were analyzed for gamma emitters, ^9Sr and 90Sr. Sam-
ples collected at five locations were routinely analy2ed for 3H. Table 4
lists the general analytical procedures and detection limits for these
analyses as described by Johns^ ' and Lem and Snelling' '. For gamma
spectroscopy analyses, the milk was placed in Marinelli beakers (3.5 liters)
which position the samples around the crystal detector for high counting
efficiency. All routine milk samples were counted for 40 minutes. Special
samples collected following known releases of activity were counted
20 minutes. Actual counting time of the milk samples varied from 10 to
40 minutes depending on radionuclide concentrations. A computer was used
to calculate the activity concentration of each of the detected nuclides
at the time of count and extrapolated the results to time of milking.
The analytical results of samples collected during 1971 are summarized in
Table 5. The maximum, minimum, and average concentrations of the 137Cs,
89Sr, 90Sr, and 3H analyses performed on-samples collected during the year
are shown for each sampling location at which these analyses were scheduled.
-*di
In the computation of the average concentrations, sample concentrations of
less than the minimum detectable concentration were assumed to be equal to
the minimum detectable concentration. If any of the values used in
11
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computing the averages were "less than" values, the average was expressed
as a "less than" value. The same method was used for water samples. No
radionuclides attributed to Nevada Test Site operations were detected in
any of the samples except for 131I in samples collected during January
and February from the McCurdy Ranch at Springdale, Nevada. These samples
were collected as part of the surveillance program for the Baneberry Event
of December 18, 1970, which is described in detail in another report .
During the year, there were a few samples which did not have enough volume
to provide the usual minimum sensitivity for gamma spectrum analysis for
137Cs (10x10~9uCi/ml). In these cases, the minimum sensitivity was
<100xlO~9pCi/ml. Thus, since these would bias the sample average for
137Cs, they were omitted.
At the McCurdy Ranch, 131i and 133I were detected in the first milk sam-
ples collected two days after the Baneberry Event. The 131I concentration
peaked in the milk at 810x10~9pCi/ml on December 26 and 27, 1970, and slow-
ly decreased until the concentration was below the minimum detectable con-
centration of 10x10 "9viCi/ml on February 3, 1971. The maximum concentration
during this report period was 730x10~9pCi/ml on January 1. The highest
concentration of 133I, 1800x10"9yCi/ml, was detected in the first milk sam-
ple collected on December 20, 1970. The concentrations rapidly decreased
until they were below the minimum detectable concentration on December 25,
1970.
The annual average concentration of 131I in milk samples collected at the
McCurdy Ranch (Table 5) was calculated from the monthly averages for Jan-
uary and February and the results for the subsequent monthly samples. The
method used for calculating the January average assumed that the days when
milk was not collected had the same 131l concentration as the last previous
sample. The January average concentrations of 131i and 137Cs were calcu-
lated from 19 samples. Of the 19 samples, 11 were analyzed for 89Sr and
"Sr. In February, four samples were collected and averaged for *3 Cs
and *31I. Only one sample (collected on February 1) showed a positive
131I concentration (10x10~9yCi/ml).
12
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The total radiation dose equivalent to the thyroid of the youngest person
drinking the McCurdy milk (a three-year-old child at Beatty, Nevada) was
estimated from the radioiodine concentrations to be 130 mrem . The
portion of the total dose occurring during this report period was esti-
mated to be 85 mrem. These dose equivalents were below the Radiation Pro-
tection Standards of the AEG Manual, Chapter 0524^ , which is 1500 mrem
to an individual thyroid (500 mrem to a suitable sample of the exposed
population). Since all of the milk producers in the Springdale area were
sampled following Baneberry and all of the individuals consuming the con-
taminated milk were evaluated, the standard for the individual is probably
more appropriate.
At the other locations, no radioiodine was detected, and no significant
increases were observed in the 137Cs, 89~90Sr, and 3H concentrations other
than is normally observed due to variations in world-wide fallout. Figure 2
shows the gross beta concentration in air at the Halstead Ranch at Duckwater,
Nevada, with the; concentrations of 137Cs, 90Sr and 89Sr in milk samples
collected at the' same location. The Halstead Ranch was chosen for this
comparison because an air sampler is installed there and because the feed-
ing practices were such that a good correlation between the activity in
air and milk was seen. A number of other milk sampling locations also
showed peak concentrations during the months of May and June also but
the correlations of activity in milk with activity in air were not as
evident. The cows at the Halstead Ranch were placed on green feed in May
and stayed on green feed through October. During November they went back
on hay and grain. The effect of both increased fallout and eating green
feed was evident in the May sample results for 137Cs and 89Sr. During
March and April when the gross beta concentration in air was increasing
sharply, the 89Sr and 137Cs concentrations in the milk showed no increase,
probably because the cows were on dry feed. The increase in the gross
beta concentration in air during November was attributed to the nuclear
detonation on November 18, 1971, by the People's Republic of China. The
milk sample for November was collected before this event, and the increase
in 137Cs during this time was probably caused by analytical, feeding, and
fallout variances.
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Water Sampling
The Water Surveillance Network operated in off-site areas around the NTS
during 1971, consisted of 99 locations (Figures 6 and 7) where NERC-LV
personnel collected one-gallon water samples either monthly or quarterly.
The samples were collected from community water supplies, wells, open and
closed springs, streams, lakes and ponds. If a release of radioactivity
from NTS had occurred, special sampling within the affected area would
have been conducted to determine radionuclide concentrations and the pos-
sible need to take protective action.
During 1971, 1040 water samples were collected from these 99 locations.
Eight of the sampling locations along U.S. 40 and U.S. 93 north of McGill ,
Nevada, were discontinued in February 1971 when activities at the Central
Nevada Supplemental Test Site were terminated. One location in the Las
Vegas Valley was discontinued when the well dried up. This location was
replaced by another well in the same area.
All of the samples were scheduled to be collected monthly, except those
from Walker Lake and Pruess Reservoir. These two locations were sampled
quarterly. In some cases operational priorities, frozen sources, etc.,
prevented the sampling of each location every month.
All water samples were analyzed by gamma spectroscopy and counted for gross
alpha and gross beta radioactivity. Network samples from approximately
25 locations west, south and southeast of NTS were also routinely analyzed
for 3H. Analyses for 89Sr and 90Sr, 238Pu and 239Pu, U and 3H would have
been done in the event activity related to the NTS had been detected by
gamma spectroscopy, or special requirements of the sampling program had re-
quired additional analyses. Table 4 lists the general analytical proce-
dures and detection limits as described by Johns ^' , Lem and Snelling^ '
and
The analytical results of all water samples collected during 1971 are sum
marized in Table 6. The maximum, minimum, and average concentrations of
gross alpha, gross beta, and 3H radioactivity are shown for each sampling
14
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Q
location, except for H analyses which were performed on samples collected
at 25 of the locations. No gamma-emitting fission products were detected
in any of the samples by gamma spectroscopy analyses. No significant
trends were observed in the gross alpha, gross beta, or 3H results, although
surface waters generally contained higher concentrations than ground waters.
The higher concentrations were apparently due to world-wide fallout and
naturally occurring radionuclides.
The average concentrations for the gross alpha, gross beta, and 3H radio-
activity were compared to the following Concentration Guides specified in
(4)
AEC Manual, Chapter 0524 k ' for exposure of individuals:
Type of Radioactivity Concentration Guide ytCi/ml
Gross alpha 3x10~8
Gross beta 3x10"8
3H 1x10 -3
Those locations{which had average concentrations greater than these Guides
are Pahranagat Lake (gross beta C =3.5xlO~8yCi/ml), Comins Lake (gross
beta C =4.5xlO~8yCi/ml), Walker Lake (gross beta C =2.8xlO"7uCi/ml),
avg V6 avg '
Seyler Reservoir (gross beta C =3.4xlO"8yCi/ml) and Fallini's Pond
(gross beta C =3.3xlO"8yCi/ml). Although special analyses on samples
from these locations were not made during the report period to identify
the source of the gross radioactivity, such analyses for some of the lo-
cations during other years were made as shown in Table 7. This table
shows that the source of the gross alpha and beta radioactivity was pri-
marily due to various combinations of lt°K, natural uranium, and uranium
daughters, including 226Ra.
Since the water sampled at 70 of the 99 network sampling locations was
used for drinking water (identified by the superscript 'd1 next to the
sample type numbers in Table 6), the gross radioactivity concentration
averages for these locations were also compared to the PHS Drinking
Water Standards' . These standards require that the gross alpha and
gross beta radioactivity in drinking water be limited to 3xlO~^yCi/ml
and lxlO~8yCi/ml, respectively, if 226Ra and 90Sr are not known to be
15
-------
absent. If 90Sr and alpha emitters are known to be absent, a gross beta
radioactivity of 1x10 "6yCi/ml is allowed. Analyses for 226Ra and 90Sr
were not made on any of the drinking water samples during the report
period; however, analyses were made on samples from some of the locations
in previous years. In general, the results showed that the source of the
majority of the gross alpha and gross beta radioactivity was naturally
occurring uranium and 226Ra. Strontium-90 and 226Ra concentrations de-
tected were below the PHS Standards except for 226Ra concentrations in
samples collected at the Service Station and Cafe at Warm Springs, Nevada.
Samples have been analyzed for 226Ra at this location during the time
period November 1967 through August 1970. Twelve samples collected
and analyzed during the 13-month period of August 1969 through August 1970
showed that the 226Ra concentration ranged from 11 to 17x10~9pCi/ml with
an average of 15x10~9yCi/ml.
For the purpose of identifying the source of the gross radioactivity in
all network samples and comparing sample concentrations with both the AEG
Concentration Guides and the PHS Drinking Water Standards, samples during
1972 will be given special analyses at least once a year. For surface
water samples, the special analyses will include 89"90Sr, 238~239Pu, U,
and 226Ra. For drinking water samples, the analyses will include 89~9 Sr,
U, and 226Ra.
16
-------
REFERENCES
1. "Off-Site Radiological Safety for the Cannikin Event, November 6,
1971," NERC-LV-539-2. National Environmental Research Center, Environ-
mental Protection Agency, Las Vegas, Nevada. September 1972.
2. Boysen, G. A. "Off-Site Radiological Safety Program for Project
Rulison, Flaring Phase III," NERC-LV-539-15. National Environmental
Research Center, Environmental Protection Agency, Las Vegas, Nevada.
(To be published)
3. Letter from Mr. E. Jack Story, Assistant NVOO Program Manager, EG&G,
P.O. Box 1912, Las Vegas, NV 89101, to Mr. Robert Thalgott, Test Manager,
Nevada Operations Office, U. S. Atomic Energy Commission, (Nov. 26, 1971)
/
4. "Standards for Radiation Protection," U. S. Atomic Energy Commission
Manual, Chapter 0524. U. S. Atomic Energy Commission, Washington, D. C.
5. Johns, F. B. "Southwestern Radiological Health Laboratory Handbook of
Radiochemical Analytical Methods," SWRHL-11. Southwestern Radiological
Health Laboratory, U. S. Department of Health, Education and Welfare, Las
Vegas, Nevada. March 1970.
6. Lem, P. N. and Snelling, R. N. "Southwestern Radiological Health
Laboratory Data Analysis and Procedures Manual," SWRHL-21. Southwestern
Radiological Health Laboratory, Environmental Protection Agency, Las Vegas,
Nevada. March 1971.
7. "Final Report of Off-Site Surveillance for the Baneberry Event, Decem-
ber 18, 1970," SWRHL-107r. Western Environmental Research Laboratory,
Environmental Protection Agency, Las Vegas, Nevada. February 1972.
8. Talvitie, N. A. "Electrodeposition of Actinides for Alpha Spectrometric
Determination," Analytical Chemistry, February 1972, Vol. 44, p. 280.
17
-------
9. Talvitie, N. A. "Radiochemical Determination of Plutonium of Envi-
ronmental and Biological Samples by Ion Exchange," Analytical Chemistry,
November 1971, Vol. 43, p. 1827.
10. "Public Health Service Drinking Water Standards," PHS Publication
No. 956, reprinted June 1963. U. S. Government Printing Office, Washing-
ton, D. C.
18
-------
CANADA ^ P
/ * r**--
\ « e ?»ovo0"f«VB-T
\ «-•«.>».& «"* UTAH '
. r -f«.»0»r, !« C
"J SOUTH DAKOTA M».NtAF.o?s V^
I OWAPIOCITY ^S
i \
I ^_^Js«OXC,TV V
I \ IOWA « »
I NEBRASKA K>w»crrvO»
MINNESOTA
QNORTH PLATTE *
KANSAS
A PREFILTER, CHARCOAL CARTRIDGE,
GAMMA RATE RECORDER
Q PREFILTER. GAMMA RATE RECORDER
© PREFILTER, CHARCOAL CARTRIDGE
O PREFILTER ONLY
© STANDBY STATIONS
4/72
V- (
X?ST JOSEPH V
>JSAS | ST LOO.S^
I 0-x.oaEcrrv ! MISSOURI \ .
van*-- f-s=~_J tr..._j>::'.
°"0° \JO 0«LraM.N ,' I 1 OKLAHOMA I U
HUOLe.&l "*gc"4~ O ,' II "usuoeEtO I ARKANSAS /
f\ ^ W"»SLOW I O*LBUQUERQue I *^S'*IU-0 I . ^***«*
O'NO.O /* J!Dr>rN. I I *» I NO«MAN« • LITTII ROCK /
V "'^-UNA I t I. ' O /
| ,' -o^o / j V^^ • /
^^•"•^^^ I kicr\.» ..— ' "*^^«^^^L I
*.—4
«O \
L.
NEW MEXCO
~^S
RT WORTH F
.»—•:•'
MEXICO \
Figure 1. Air Surveillance Network.
19
-------
1.4
1.3
1.2
1.1
1.0
0.9
CO
I 0.8
O
Q.
I 0.6
b
jf 0.5
i
o
0.4
0.3
0.2
0.11-
AVERAGE MONTHLY GROSS BETA
CONCENTRATIONS IN AIR
«»Sr CONCENTRATION IN MILK
"Sr CONCENTRATION IN MILK
CONCENTRATION IN MILK
I I
J F
Figure 2.
M AM
N D
Radioactivity Trends in Air and Milk Samples
Collected at Duckwater, Nevada During 1971.
20
70
60
50
40 °
O
30 S
T3
O
20
10
-------
DUCKWATER
CURRANT MAINT STA t
CURRANT!"
KIRKEBY
RANCH
STONE CABIN RN
CLARKS STA
«»—^- BLUE EAGLE RN .
JIil iff / 4fk 4
IZIN SPOS R^ik / T'SUNNYSCE
& ** '
BISHOPS
LONE PINE
THREE TLD S PER STATION
BAKERSFIELo
7/71
Figure 3. Dosimetry Network.
21
-------
Figure 4. Milk Surveillance Network.
22
-------
vv?
MINNESOTA
"Lt^«»««
GOOO*EU. tfg^PONC»CITV I *3-*J
1 I *
I STULWATEBCtn) <3»^niSA VjT^f.ytTtEVILLI
<©> STANDBY NETWORK STATIONS
© TEXAS NETWORK STATIONS
Figure 5. Standby Milk Surveillance Network.
23
-------
Figure 6. Water Surveillance Network.
24
-------
Figure 7. Water Surveillance Network—Las Vegas Valley.
25
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Kingman, AZ
Phoenix, AZ
Seligman, AZ
No. Days
Sampled
362
37
16
3
3
3
3
13
359
49
34
3
2
3
2
26
362
47
28
3
3
3
3
25
Type of
Radioactivity
gross p
95Zr
103 Ru
131J
132Te
140Ba
141Ce
144 Ce
gross p
Q C.
95Zr
106 Ru
131 j
132Te
140Ba
14 ^e
144 Ce
gross p
95Zr
106 Ru
131 ,
132Te
140Ba
14 ^e
144 Ce
•*. \s u
C
max
18
1.3
2.6
1.2
0.7
1.2
0.6
1.6
3.0
1.2
2.8
0.2
0.2
0.3
0.1
1.8
14
1.3
2.7
0.9
0.8
1.3
0.4
1.8
VsA./ Ill A V^ A
C .
nun
<0.1
0.2
0.9
0.3
0.1
0.3
0.1
0.7
<0.1
0.5
0.8
0.1
0.1
0.1
0.1
0.4
<0.1
0.4
0.7
0.3
0.1
0.3
0.2
0.5
f*-< -»- / "l
C
avg
0.6
0.06
0.07
0.006
0.003
0.007
0.003
0.04
0.6
0.11
0.15
0.001
0.001
0.002
0.001
0.08
0.6
0.1
0.12
0.004
0.003
0.006
0.003
0.07
26
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled
Winslow, AZ 364
19
10
3
3
3
2
9
Little Rock, AR 164
6
4
0
0
0
0
2
Baker, CA 355
41
11
3
2
3
3
5
Type of
Radioactivity
gross p
Q C
95Zr
105 D
Ru
131 T
I
l32Te
14 On
Ba
141 .-,
Ce
144 Ce
gross p
Q c;
95Zr
los _
Ru
131 ,
I
132™
Te
140 _
Ba
14 !„
Ce
144 Ce
gross p
Q R
95Zr
106 n
Ru
131 T
I
l3STe
140 _
Ba
14 lce
144 Ce
Id""1 uCi/ml or
C C
max min
7.8
1.1
1.8
0.5
0.3
0.7
0.2
1.5
2.0
0.8
1.5
ND
ND
ND
ND
0.4
15
0.8
2.2
1.0
0.7
1.3
0.6
1.2
0 1
0.4
1.0
0.2
0.1
0.2
0.1
0.5
<0.1
0.4
1.0
ND
ND
ND
ND
0.4
<0.1
0.1
0.8
0.2
0.4
0.3
0.1
0.6
pCi/m3
C
avg
0.5
0.04
0.04
0.002
0.001
0.003
0.001
0.02
0.4
0.01
0.01
ND
ND
ND
ND
0.001
0.6
0.06
0.04
0.005
0.003
0.006
0.002
0.01
27
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Barstow, CA
Bishop, CA
Death Valley
Junction, CA
No. Days
Sampled a
354
27
9
2
2
2
2
6
361
34
19
3
3
3
3
13
356
35
14
2
1
2
1
13
Type of
Radioactivity
gross p
Q C^
9BZr
103 Ru
1 31
132Te
140 Ba
141Ce
144 Ce
gross p
95Zr
1O6
Ru
131 ,
I
13STe
140 Ba
14 ^e
144 Ce
gross p
Q F^,
9BZr
106 Ru
131 ,
l32Te
140Ba
14 ^e
144 Ce
C
max
32
1.1
1.5
2.3
1.5
2.9
1.3
1.3
31
1.1
2.4
1.8
1.1
2.5
1.0
1.2
6.4
1.2
2.4
0.4
0.2
0.5
0.2
1.3
min
<0.1
0.2
1.1
0.4
0.3
0.8
0.3
0.9
<0.1
0.3
1.0
0.4
0.3
0.7
0.3
0.6
<0.1
0.2
0.6
0.1
0.2
0.1
0.2
0.5
fV"»-/ *"
C
avg
0.6
0.04
0.03
0.007
0.005
0.01
0.004
0.02
0.8
0.07
0.08
0.009
0.006
0.01
0.005
0.04
0.6
0.05
0.05
0.001
0.001
0.002
0.001
0.03
28
-------
Table l 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
-t rf~
Sampling No. Days
Location Sampled
Furnace Creek, 355
CA 35
20
0
0
0
0
12
Indio, CA 362
15
6
3
3
3
3
3
Lone Pine, CA ' 339
32
20
2
2
2
2
12
Type of
Radioactivity
gross (3
96Zr
103 RU
1 31
!32Te
l40Ba
14 lp
144 Ce
gross p
95Zr
106 Ru
1 31 T
I
132Te
140Ba
14 ^e
144 Ce
gross p
95Zr
106 Ru
131 T
I
132Te
140 Ba
141Ce
144 Ce
C
max
2.5
1.3
2.5
ND
ND
ND
ND
1.4
4.9
0.8
1.7
0.3
0.1
0.4
0.2
1.3
16
1.0
1.9
0.8
0.5
1.3
0.6
1.4
C .
mm
<0. 1
0.4
0.9
ND
ND
ND
ND
0.5
<0.1
0.1
1.0
0.1
0.1
0.2
0.1
0.9
<0.1
0.2
0.4
0.8
0.5
1.3
0.6
0.3
f v •*-/ ••»
C
avg
0.6
0.07
0.09
ND
ND
ND
ND
0.03
0.4
0.02
0.02
0.002
0.001
0.002
0.001
0.01
0.6
0.07
0.1
0.004
0.003
0.007
0.003
0.04
29
-------
Table i 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled
Needles, CA 346
55
29
3
3
3
3
18
Ridgecrest, CA 363
5
1
2
2
2
2
0
Shoshone, CA 357
27
12
3
2
3
3
9
Type of
Radioactivity
gross p
95Zr
103 Ru
131 1
132Te
l40Ba
141Ce
144 Ce
gross p
9BZr
106 Ru
isij
132Te
140Ba
141Ce
144 Ce
gross p
9BZr
106 Ru
131 j
l32Te
140Ba
141Ce
144 Ce
10"1 uCi/ml or
C C
max min
11
1.3
2.3
0.7
0.5
1.2
0.5
1.7
7.1
0.5
1.1
0.8
0.6
1.2
0.4
ND
8.1
1.0
2.5
1.0
0.3
0.7
0.3
1.6
0.2
0.8
0.2
0.1
0.2
0.1
0.5
<0.1
0.2
1.1
0.4
0.3
0.4
0.1
ND
<0.1
0.3
1.0
0.2
0.1
0.1
0.1
0.5
pCi/m3
C
avg
0.6
0.11
0.14
0.003
0.002
0.004
0.002
0.06
0.4
0.006
0.003
0.003
0.002
0.004
0.002
ND
0.5
0.05
0.05
0.004
0.001
0.003
0.001
0.03
30
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled
Denver, CO 352
67
56
5
5
5
5
57
Durango, CO 365
26
21
2
2
2
2
16
Boise, ID 364
30
17
1
1
1
0
12
Type of
Radioactivity
gross p
Q c
95Zr
105 ,,
Ru
131 T
I
132Te
140,,
Ba
141 ,,
Ce
144 _,
Ce
gross fj
95Zr
106 ,,
Ru
131 T
I
132™
Te
140 D
Ba
141Ce
144 _
Ce
gross p
Q Ft
95Zr
10s n..
Ru
131 T
I
l32Te
140Ba
T A 1
14 -Ce
144 f.
Ce
•i. vy »av
c
max
2.4
1.0
2.1
0.07
0.07
0.09
0.05
1.3
3.9
1.8
3.3
0.3
0.1
0.4
0.2
2.1
3.3
1.2
2.4
0.2
0.1
0.3
ND
1.6
j J./ Ui-L V_/ A.
C .
nun
<0.1
0.2
0.4
0.04
0.03
0.08
0.04
0.3
<0.1
0.5
1.1
0.1
0.1
0.2
0.1
0.5
<0.1
0.2
0.8
0.2
0.1
0.3
ND
0.7
\j\j *-f »ii
C
avg
0.5
0.08
0.12
0.001
0.001
0.001
0.001
0.08
0.6
0.06
0.09
0.001
0.001
0.002
0.001
0.05
0.5
0.05
0.07
<0.001
<0.001
<0.001
ND
0.03
31
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
i r 1 2 ..,-, j /«T „. „ «/-!.; /W3
Sampling
Location
Idaho Falls, ID
Preston, ID
Twin Falls, ID
No. Days
Sampled
355
61
52
4
2
4
2
42
358
25
16
2
1
2
2
12
362
36
20
1
1
1
1
11
Type of
Radioactivity
gross p
Q K
96Zr
105 Ru
1 31
l32Te
140 Ba
141Ce
144 Ce
gross (3
Q C.
95Zr
106 Ru
1 31
° I
132Te
140 Ba
14 1 *
f P
144 Ce
gross p
9BZr
106 Ru
1 31
l32Te
l40Ba
14 lce
144Ce
-M. v* v*
C
max
2.9
1.8
1.8
0.2
0.2
0.3
0.1
1.1
4.7
1.3
2.4
0.3
0.1
0.3
0.1
1.4
3.7
1.9
3.7
0.1
0.1
0.3
0.1
2.2
\s -* / *>a -*. v^ *
min
<0.1
0.3
0.5
0.1
0.2
0.1
0.1
0.3
<0.1
0.4
1.1
0.07
0.1
0.1
0.07
0.8
<0.1
0.1
1.0
0.1
0.1
0.3
0.1
0.7
f v •*-/ "»
C
avg
0.5
0.07
0.12
0.002
0.001
0.002
0.001
0.08
0.5
0.05
0.07
0.001
<0.001
0.001
<0 . 001
0.03
0.5
0.06
0.09
<0 . 001
<0 . 001
0.001
<0 . 001
0.03
32
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled
Iowa City, IA 337
50
33
0
0
0
0
32
Sioux City, IA 363
26
16
0
0
0
0
11
Dodge City, KS 359
1
0
0
0
0
0
0
Type of
Radioactivity
gross p
Q C.
95Zr
los
Ru
1 31 ,
I
l32Te
140 ,,
Ba
14 !„
Ce
144 Ce
gross p
Q R
95Zr
los „
Ru
131 ,
I
1 32™
Te
14O ~
Ba
14 ^e
144 Ce
gross P
Q c
95Zr
106 Ru
131 -r
I
!3STe
l40Ba
14 lp
144 Ce
-i. \J U1
C
max
2.5
0.7
1.2
ND
ND
ND
ND
0.8
1.8
0.9
1.2
ND
ND
ND
ND
0.8
1.4
0.1
ND
ND
ND
ND
ND
ND
L^ •*•/ HI*. \S A
C .
mm
<0. 1
0.2
0.4
ND
ND
ND
ND
0.3
<0.1
0.3
0.6
ND
ND
ND
ND
0.4
<0.1
0.1
ND
ND
ND
ND
ND
ND
£-*\^ JL/ lit
C
avg
0.4
0.05
0.06
ND
ND
ND
ND
0.04
0.4
0.03
0.04
ND
ND
ND
ND
0.02
0.3
<0 . 001
ND
ND
ND
ND
ND
ND
33
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
n rp 1 2 ..^.j / n „/-!.: / 3
Sampling No. Days
Location Sampled a
Lake Charles, LA 345
34
33
3
3
3
3
33
Monroe, LA 318
38
38
0
0
0
0
30
New Orleans, LA 358
44
34
3
0
3
3
34
Type of
Radioactivity
gross p
95Zr
1O8 0
Ru
131 T
I
l32Te
l40Ba
14 ice
144 -.
Ce
gross p
p c
95Zr
106 Ru
131 T
I
132Te
140Ba
14 ^e
144 Ce
gross p
9BZr
106 Ru
131 T
I
132_
Te
140Ba
14 lc
144 Ce
J. V UK
C
max
2.0
0.7
0.7
0.06
0.05
0.1
0.05
0.7
1.7
0.7
1.2
ND
ND
ND
ND
1.1
1.8
0.7
1.0
0.03
ND
0.08
0.04
0.8
J JL / 111 .A. ^f A
min
<0. 1
0.1
0.2
0.06
0.05
0.1
0.05
0.3
<0.1
0.2
0.3
ND
ND
ND
ND
0.3
<0.1
0.1
0.5
0.03
ND
0.08
0.04
0.3
pv-*-/ iti
C
avg
0.3
0.03
0.05
<0 . 001
<0.001
0.001
<0 . 001
0.04
0.3
0.04
0.07
ND
ND
ND
ND
0.04
0.4
0.05
0.07
<0 . 001
ND
0.001
<0 . 001
0.05
34
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled
Minneapolis, MN 348
40
31
0
0
0
0
30
Joplin,MO 362
10
7
0
0
0
0
5
St. Joseph, MO 363
9
7
1
1
1
1
4
Type of
Radioactivity
gross p
q c.
95Zr
103 ,,
Ru
131 T
I
132™
Te
l40Ba
14 1-,
Ce
144 _
Ce
gross 3
Q c^
95Zr
106 „
Ru
131 ,
I
132™
Te
140 _
Ba
14 ^e
144 Ce
gross p
Q C.
9BZr
106 _
Ru
131 T
I
ISSrn
Te
140,,
Ba
14 lCe
144 „
Ce
A. \J U\
C
max
1.2
0.5
1.0
ND
ND
ND
ND
0.6
2.5
0.9
1.8
ND
ND
ND
ND
1.2
1.9
0.9
1.5
0.04
0.07
0.2
0.07
1.3
_/X/ IUJ. W A
min
<0.1
0.2
0.4
ND
ND
ND
ND
0.3
<0.1
0.3
0.6
ND
ND
ND
ND
0.4
<0.1
0.4
1.1
0.04
0.07
0.2
0.07
0.4
\j\sJL/ ni
C
avg
0.4
0.04
0.05
ND
ND
ND
ND
0.04
0.4
0.02
0.02
ND
ND
ND
ND
0.01
0.4
0.01
0.02
<0 . 001
<0 . 001
0.001
<0 . 001
0.01
35
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled
St. Louis, MO 362
4
3
0
0
0
0
3
North Platte, NE 345
37
28
1
0
0
0
28
Alamo, NV 363
60
19
2
2
2
2
8
Type of
Radioactivity
gross p
P ^
95Zr
IDS 0
Ru
131 T
I
132_
Te
140Ba
141Ce
144 Ce
gross p
96Zr
106 „
Ru
131 ,
I
l32Te
140 Ba
141Ce
144 Ce
gross p
Q C
95Zr
106 Ru
131 T
I
l32Te
140Ba
l41Ce
144 Ce
.*. w u
C
max
1.5
0.6
0.7
ND
ND
ND
ND
0.4
2.5
1.1
1.7
0.1
ND
ND
0.6
1.5
3.1
1.1
3.0
0.2
0.1
0.4
0.8
1.2
V-m./ »**-*. v A.
min
<0.1
0.4
0.7
ND
ND
ND
ND
0.4
<0.1
0.1
0.6
0.1
ND
ND
0.6
0.3
<0.1
0.2
0.8
0.1
0.1
0.2
0.1
0.6
f V *-f •*•
C
avg
0.4
0.004
0.006
ND
ND
ND
ND
0.003
0.5
0.06
0.07
<0 . 001
ND
ND
0.002
0.04
0.6
0.1
0.07
0.001
0.001
0.002
0.002
0.02
36
-------
Table 1 1971 summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Austin, NV
Battle Mountain,
NV
Beatty, NV
No. Days
Sampled a
349
49
26
2
2
2
2
17
359
54
30
2
2
2
2
16
365
33
12
3
3
3
3
8
Type of
Radioactivity
gross )3
95Zr
106 _
Ru
131 T
I
!32Te
l40Ba
141,-,
Ce
144,,
Ce
gross (3
95Zr
106 _
Ru
131 T
I
132
Te
140Ba
14 ^e
144 Ce
gross 3
96Zr
106 _
Ru
131 ,
I
132™,.
Te
140Ba
14 lce
144 Ce
10~-uCi/ml or
C C
max rain
30
1.5
2.1
1.5
1.3
1.7
0.8
1.8
31
1.3
3.4
1.6
1.3
1.9
1.0
2.0
23
1.2
1.9
1.3
0.8
2.3
1.0
1.2
0 1
0.2
0.7
1.0
0.7
1.3
0.7
0.5
<0.1
0.1
0.5
0.5
0.3
0.6
0.2
0.5
<0.1
0.5
1.1
0.2
0.1
0.2
0.1
0.9
pCi/m3
C
avg
0.7
0.08
0.09
0.007
0.005
0.008
0.004
0.05
0.6
0.1
0.11
0.006
0.004
0.007
0.003
0.04
0.7
0.06
0.05
0.003
0.005
0.013
0.005
0.02
37
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Blue Jay, NV
Caliente, NV
Stone Cabin Ranch,
NV
No. Days
Sampled
364
50
16
2
2
2
2
11
364
68
32
2
2
2
2
22
361
32
14
2
2
2
2
9
Type of
Radioactivity
gross p
Q ^
95Zr
los „
Ru
131 ,
I
l32Te
140Ba
14 lp
144 Ce
gross p
Q c;
95Zr
lOS „
Ru
131 T
I
13STe
140 Ba
141.-,
Ce
144 Ce
gross p
Q C,
95Zr
106 Ru
131 T
I
l32Te
140Ba
14ICe
144Ce
A, VY U
C
max
13
1.0
1.9
0.6
0.5
1.1
0.5
1.2
6.9
1.2
2.4
0.4
0.3
0.7
0.3
1.7
15
1.0
1.8
0.8
0.7
1.3
0.5
1.2
^x.L/ 111.1. \-r i.
min
<0.1
0.2
0.8
0.5
0.3
1.0
0.4
0.7
<0.1
0.2
0.7
0.3
0.2
0.4
0.2
0.6
<0.1
0.2
0.9
0.8
0.6
1.1
0.5
0.8
I^V-a-/ 4i*
C
avg
0.6
0.08
0.05
0.003
0.002
0.006
0.002
0.03
0.6
0.1
0.12
0.002
0.001
0.003
0.001
0.06
0.6
0.06
0.05
0.004
0.004
0.007
0.003
0.02
38
-------
Table l 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Currant , NV
Blue Eagle Ranch,
(Currant) NV
Currie, NV
No. Days
Sampled
335
23
12
2
3
2
3
9
355
26
14
0
0
0
0
11
361
39
18
3
3
3
3
11
Type of
Radioactivity
gross (3
95Zr
103 Ru
131 T
I
132™
Te
l40Ba
141.-,
Ce
144 „
Ce
gross p
95Zr
106 „
Ru
131T
I
1 32,.,
Te
140Ba
141,,
Ce
144 _
Ce
gross (3
o c;
96Zr
106 0
Ru
131 T
I
1 32_
Te
140Ba
14 "'Ce
144Ce
10""1 uCi/ml or
C C
max min
6.7
0.6
2.0
0.7
0.5
1.1
0.5
1.1
11
1.1
2.0
ND
ND
ND
ND
1.5
14
1.5
2.8
0.8
0.6
0.9
0.5
1.7
0.2
0.7
0.2
0.1
0.2
0.1
0.4
<0.1
0.4
1.0
ND
ND
ND
ND
0.7
<0.1
0.2
0.7
0.1
0.1
0.1
0.1
0.5
pCi/m3
C
avg
0.5
0.03
0.04
0.002
0.002
0.004
0.002
0.02
0.6
0.05
0.06
ND
ND
ND
ND
0.03
0.6
0.07
0.07
0.005
0.003
0.005
0.003
0.03
39
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Diablo, NV
Duckwater, NV
Elko, NV
No. Days
Sampled a
365
34
20
2
2
2
2
11
327
40
29
1
1
1
1
19
363
22
11
2
2
2
1
7
Type of
Radioactivity
gross p
95Zr
103 Ru
131 T
I
132Te
140Ba
14 1
Ce
l44Ce
gross 3
Q ^
95Zr
106 _
Ru
131 ,
I
13STe
140Ba
14 ^e
144 Ce
gross (3
Q Fi
95Zr
106 Ru
131 ,
I
!32Te
140 Ba
14 1
""Ce
144Ce
*. \-r u
C
max
14
1.1
1.6
0.8
0.5
1.4
0.6
1.5
15
1.1
2.9
1.0
0.8
1.4
0.5
2.3
20
1.1
3.2
0.9
0.8
1.5
0.6
1.3
VJL./ J11.I. V^ J.
C .
nun
<0 1
0.2
0.7
0.4
0.3
0.7
0.2
0.5
<0.1
0.2
0.6
1.0
0.8
1.4
0.5
0.5
<0.1
0.3
0.7
0.3
0.4
0.3
0.6
0.4
y\^j./ 111
C
avg
0.6
0.06
0.07
0.003
0.002
0.006
0.002
0.03
0.6
0.06
0.08
0.003
0.002
0.004
0.001
0.04
0.5
0.05
0.04
0.003
0.003
0.005
0.002
0.02
40
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
i rt~ 1 ** _.*-»-: /~~.~i ^ « *,n-t /™3
Sampling No. Days
Location Sampled
Ely, NV 360
38
28
2
2
2
2
21
Eureka, NV 362
37
25
3
3
3
3
15
Fallon, NV 364
51
20
3
3
3
3
13
Type of
Radioactivity
gross (3
Q f^i
95Zr
los „
Ru
1 31
I
!32Te
l40Ba
14 ^6
144 Ce
gross g
Q C
95Zr
lOS „
Ru
131 ,
I
132Te
140Ba
14 1 _
Ce
144 Ce
gross p
Q Fi
9BZr
103 „
Ru
131 T
I
132Te
i40Ba
14iCe
144-
14 Ce
C
max
18
1.3
2.6
1.1
0.7
1.2
0.6
1.5
22
1.2
2.0
0.9
0.8
1.4
0.7
1.4
51
1.0
1.7
2.0
1.6
2.6
0.9
1.4
C
mm
<0.1
0.3
0.6
0.2
0.2
0.5
0.2
0.3
<0.1
0.4
0.9
0.2
0.1
0.2
0.1
0.8
<0.1
0.2
0.9
0.2
0.2
0.4
0.2
0.5
C
avg
0.6
0.06
0.1
0.004
0.002
0.005
O.002
0.04
0.7
0.08
0.09
0.005
0.004
0.008
0.003
0.04
0.7
0.07
0.07
0.008
0.007
0.01
0.005
0.03
41
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Frenchman Station,
NV
Geyser Maintenance
Station, jjV
Goldfield, NV
No . Days
Sampled
358
43
6
3
3
3
3
4
315
39
21
3
3
3
3
10
363
46
19
2
2
2
2
6
Type of
Radioactivity
gross p
95Zr
103 Ru
131 T
I
132
Te
l40Ba
14 zce
144 _,„
Ce
gross p
95Zr
106 0
Ru
131T
1
132_
Te
140Ba
141Ce
144.,
Ce
gross P
9BZr
106
KU
131 T
I
132
Te
140Ba
14 !„
Ce
144 Ce
Iff"1 uCi/ml or
C C
max min
37
0.9
1.4
1.9
0.8
1.9
0.9
1.1
14
1.1
2.3
0.7
0.4
0.7
0.3
1.1
34 •
1.3
2.2
1.6
1.2
2.4
1.1
1.3
0.2
0.9
0.2
0.1
0.4
0.2
0.4
<0.1
0.3
1.0
0.2
0.1
0.3
0.1
0.8
<0.1
0.2
0.9
1.0
0.8
1.8
0.8
0.9
pCi/ma
C
avg
0.7
0.06
0.02
0.009
0.003
0.01
0.005
0.01
0.6
0.07
0.08
0.003
0.002
0.004
0.002
0.03
0.7
0.07
0.07
0.007
0.005
0.01
0.005
0.02
42
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled
Groom Lake, NV 302
87
69
2
2
2
2
64
Hiko, NV 365
61
25
1
0
1
1
17
Indian Springs, NV 365
34
16
2
2
2
2
12
Type of
Radioactivity
gross p
95Zr
1O5 n
Ru
131 ,
I
132
Te
l40Ba
14 !„
Ce
144 _,
Ce
gross p
957r
f-t I
106 p.
Ru
131 ,
I
13 Te
14 On
Ba
14 lce
144.,
Ce
gross p
Q R
95Zr
106 „
Ru
131 ,
I
1 32_,
Te
140D
Ba
14 ipe
144Ce
10"1 uCi/ml or
C C
max min
13
0.9
1.6
0.8
0.5
1.2
0.5
1.1
2.5
1.0
2.4
0.1
ND
0.2
0.1
1.3
4.5
1.1
2.9
0.3
0.2
0.4
0.2
1.5
<0,
0.2
0.4
0.8
0.5
1.2
0.5
0.3
<0.1
0.2
0.8
0.1
ND
0.2
0.1
0.7
<0.1
0.3
0.6
0.2
0.1
0.4
0.1
0.5
pCi/m3
C
avg
0.6
0.1
0.15
0.004
0.003
0.007
0.003
0.09
0.6
0.1
0.1
<0.001
ND
0.001
<0 . 001
0.05
0.6
0.06
0.07
0.001
0.001
0.002
0.001
0.03
43
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Iff" "'"'^ /™i «» w*r*-i /w*3
Sampling No. Days
Location Sampled
Las Vegas, NV 362
117
64
3
3
3
0
57
Lathrop Wells, NV 362
59
34
3
2
3
2
24
Lida, NV ' 333
24
12
3
3
3
3
11
Type of
Radioactivity
gross p
Q C
95Zr
1 n^,
10aRu
13lj
132Te
l40Ba
14 ^e
144 Ce
gross p
95Zr
106 Ru
131 ,
I
132Te
140Ba
14 lCe
144 Ce
gross p
96Zr
106 Ru
13lj
132Te
140 Ba
1 A. 1
141Ce
144 Ce
.*. v vr
C
max
2.3
1.0
2.0
0.1
0.1
0.2
ND
1.2
9.9
1.7
4.0
0.7
0.4
1.0
0.5
1.8
32
1.1
1.6
1.1
1.0
1.4
0.7
1.1
\*r A. / 111 -A. WA
C .
nun
<0.1
0.05
0.5
0.1
0.1
0.2
ND
0.3
<0.1
0.2
0.9
0.2
0.1
0.2
0.1
0.5
<0.1
0.5
1.1
0.4
0.2
0.4
0.2
0.5
fVs-a-/ •"
C
avg
0.6
0.15
0.18
0.001
0.001
0.002
ND
0.1
0.6
0.11
0.15
0.003
0.001
0.004
0.002
0.06
0.7
0.04
0.04
0.007
0.005
0.008
0.004
0.03
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled a
Lovelock, NV 365
48
22
3
3
3
3
14
Lund, NV 348
45
24
2
2
2
2
19
Mesquite, NV 365
64
30
2
2
2
2
15
Type of
Radioactivity
gross p
95Zr
1O3 „
Ru
131 T
I
132™
Te
140J,
Ba
141Ce
144 „
Ce
gross p
Q C
7r
£J -I
106 Ru
131 T
1
I32Te
140Ra
tsa
141Ce
144 Ce
gross p
95Zr
i-t i
106 Rii
KU
131 T
I
1 32™
Te
140Ra
Da
141Ce
144 Cf>
10"1 uCi/ml or
C C
max min
14 •
1.0
1.8
1.0
0.8
1.5
0.5
1.5
18
1.3
2.9
0.8
0.6
1.1
0.7
1.6
2.7
1.4
2.3
0.1
0.1
0.2
0.1
1.5
«,.!
0.1
0.8
0.2
0.1
0.3
0.2
0.7
<0.1
0.2
0.7
0.6
0.5
1.1
0.6
0.7
<0.1
0.2
0.9
0.1
0.1
0.1
0.1
0.8
pCi/m-3
C
avg
0.5
0.08
0.08
0.004
0.003
0.006
0.002
0.04
0.6
0.08
0.08
0.004
0.003
0.006
0.004
0.05
0.6
0.11
0.13
0.001
0.001
0.001
0.001
0.04
45
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled
Nyala, NV 365
34
23
2
2
2
2
16
Pahrump, NV 332
55
27
3
3
3
3
21
Pioche, NV 361
23
11
2
2
2
2
5
Type of
Radioactivity
gross p
9BZr
106 Ru
131 ,
l32Te
l40Ba
141Ce
144 Ce
gross (3
95Zr
106 Ru
131 ,
132Te
140 Ba
141Ce
144 Ce
gross p
9BZr
106 Ru
131 ,
l32Te
140 Ba
141Ce
144 Ce
10"1 uCi/ml or
C C .
max nun
12
1.1
2.4
0.6
0.4
1.0
0.4
1.6
3.1
1.1
1.8
0.3
0.1
0.3
0.1
1.9
10
0.9
1.7
0.6
0.5
0.7
0.4
1.2
0.5
0.8
0.3
0.3
0.6
0.2
0.8
0.1
0.6
0.3
0.1
0.3
0.1
0.5
0.4
0.6
0.3
0.3
0.5
0.3
0.6
pCi/m3
C
avg
0.6
0.07
0.09
0.002
0.002
0.004
0.002
0.05
0.6
0.09
0.09
0.002
0.001
0.002
0.001
0.06
0.5
0.04
0.04
0.002
0.002
0.003
0.002
0.01
-------
Table l 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Reno, NV
Round Mountain,
NV
Scotty's Junction,
NV
No. Days
Sampled
338
25
15
2
2
2
2
9
361
49
25
3
3
3
3
20
363
40
25
4
2
2
2
17
Type of
Radioactivity
gross p
95Zr
106 Ru
131 j
132Te
l40Ba
14 1
144 Ce
gross p
9BZr
106 Ru
laij
i32Te
140Ba
141Ce
144 Ce
gross p
95Zr
106 Ru
131 j
!3STe
140Ba
141Ce
144 Ce
10 x uCi/ml or
C C
max min
46
1.0
2.0
2.4
1.9
3.3
1.4
1.2
27
1.1
2.1
1.5
1.2
1.6
0.7
1.5
18
1.4
2.2
1.4
0.8
2.0
0.8
2.0
0.4
0.5
0.7
0.5
0.9
0.4
0.8
0.3
0.7
0.4
0.2
0.5
0.3
0.5
0.4
1.1
0.2
0.2
0.2
0.1
0.5
pCi/m3
C
avg
0.7
0.05
0.06
0.008
0.007
0.01
0.005
0.02
0.7
0.08
0.08
0.006
0.005
0.008
0.004
0.05
0.7
0.08
0.11
0.01
0.003
0.006
0.002
0.05
47
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Sunnyside, NV
Tonopah, NV
Tonopah Test
Range , NV
No. Days
Sampled
320
31
22
3
3
3
3
18
364
40
22
3
3
3
3
13
339
52
27
5
5
5
5
21
Type of
Radioactivity
gross p
95Zr
106 Ru
131j
l32Te
l40Ba
14 JCe
144 Ce
gross p
P c
9BZr
106 Ru
131,
132Te
140Ba
14. 1
141Ce
144 Ce
gross p
9BZr
106 Ru
131 ,
l32Te
140Ba
141Ce
144 Ce
J.U U
C
max
15
1.0
1.9
0.8
0.3
1.0
0.5
1.1
34
1.1
2.4
1.4
0.8
2.1
1.1
1.3
15
1.1
1.8
1.1
0.8
1.6
0.6
1.4
ui/nu or
min
<0.1
0.3
0.5
0.3
0.2
0.4
0.2
0.5
<0.1
0.4
0.9
0.6
0.2
0.7
0.3
0.6
<0.1
0.2
0.5
0.3
0.2
0.4
0.2
0.6
pci/m
C
avg
0.7
0.05
0.08
0.004
0.002
0.005
0.003
0.04
0.8
0.08
0.09
0.008
0.005
0.01
0.005
0.04
0.7
0.08
0.08
0.008
0.006
0.01
0.005
0.04
48
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
I rf~ 1 2 ..,-,.; f ., «*-!.: / 3
Sampling
Location
Fallini's Ranch
(Twin Springs) , NV
Warm Springs, NV
Warm Springs
Ranch, NV
No. Days
Sampled
361
51
21
2
2
2
2
16
126
13
8
0
0
0
0
6
364
45
26
0
0
0
0
18
Type of
Radioactivity
gross p
95Zr
los „
Ru
131 ,
I
132
Te
I400m
Ba
14 ^e
144 _
Ce
gross p
95Zr
106 Ru
131 ,
I
132Te
140-
Ba
141Ce
144 Ce
gross p
9BZr
106 _
Ru
131 T
I
132
Te
140-
Ba
14 iCe
144 Ce
-*. V *JI
C
max
11
1.0
2.5
0.4
0.4
1.2
0.3
1.4
1.9
1.0
2.3
ND
ND
ND
ND
1.6
2.5
1.1
2.3
ND
ND
ND
ND
1.3
i^ A. / in*. v *
min
<0.1
0.2
0.8
0.4
0.3
0.6
0.3
0.8
0.2
0.3
0.5
ND
ND
ND
ND
0.8
<0.1
0.3
0.6
ND
ND
ND
ND
0.7
f V> •*-/ I"
C
avg
0.6
0.09
0.08
0.002
0.002
0.005
0.002
0.04
0.7
0.06b
0.09b
ND
ND
ND
ND
0.06b
0.5
0.08
0.09
ND
ND
ND
ND
0.05
49
-------
Table i 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Wells, NV
Winnemucca, NV
Albuquerque, NM
No. Days
Sampled a
365
30
17
2
2
2
2
12
350
26
16
4
4
4
4
8
348
43
31
5
5
5
5
27
Type of
Radioactivity
gross p
95Zr
103 Ru
131 j
l32Te
140 Ba
l41Ce
144 Ce
gross p
95Zr
106 Ru
131 j
132Te
l40Ba
l41Ce
144 Ce
gross p
96Zr
106 Ru
ISlj
!32Te
140 Ba
14 lce
144Ce
.1. V \X
C
max
21
1.3
2.8
1.2
1.0
1.8
0.7
1.5
28
1.0
1.9
2.1
2.0
2.1
0.8
1.3
2.5
1.4
2.1
0.1
0.1
0.2
0.7
1.6
^s.L./ LJIA. \J i.
min
<0. 1
0.4
0.9
0.3
0.2
0.3
0.2
0.5
<0.1
0.3
0.8
0.2
0.2
0.4
0.1
0.6
<0.1
0.2
0.5
0.1
0.1
0.2
0,7
0.4
J-*Xy -*-/ (U
C
avg
0.6
0.06
0.08
0.004
0.003
0.006
0.002
0.03
0.6
0.04
0.06
0.005
0.004
0.006
0.003
0.02
0.5
0.07
0.10
0.001
O.OOi
0.003
0.01
0.06
50
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Carlsbad, NM
Muskogee, OK
Medford, OR
No. Days
Sampled
360
24
15
3
2
3
0
15
360
3
3
0
0
0
0
2
342
6
3
0
0
0
0
1
Type of
Radioactivity
gross p
Q K
95Zr
103 Ru
1 31 T
132Te
140 Ba
141/-,
1* £1
144 Ce
gross p
Q C^
96Zr
106 „
Ru
131 -r
I
132Te
140 Ba
14 1 „
Ce
144 Ce
gross P
Q Fi
96Zr
106 Ru
1 31
132Te
140Ba
14- 1
141Ce
144 Ce
J. vy w\
C
max
3.2
1.3
2.5
0.2
0.1
0.3
ND
1.2
5.3
2.1
3.9
ND
ND
ND
ND
2.9
2.3
0.9
1.7
ND
ND
ND
ND
0.9
-.A/ JU-L. \S J.
min
<0.1
0.2
1.1
0.1
0.1
0.2
ND
0.5
<0.1
0.7
0.9
ND
ND
ND
ND
1.1
<0.1
0.4
0.8
ND
ND
ND
ND
0.9
t*\s •*- / *u
C
avg
0.5
0.04
0.06
0.001
0.001
0.002
ND
0.04
0.4
0.01
0.02
ND
ND
ND
ND
0.01
0.4
0.01
0.01
ND
ND
ND
ND
0.002
51
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
lCT12uCi/ml or pCi/m3
Sampling
Location
Burns , OR
Aberdeen, SD
Rapid City, SD
No. Days
Sampled a
364
20
14
0
0
0
0
13
360
6
3
0
0
0
0
2
365
14
8
0
0
0
0
2
Type of
Radioactivity
gross p
CJ K
95Zr
los „
Ru
131 T
I
132m
Te
l40Ba
14 lp
144 Ce
gross p
Q C
95Zr
los ,.
Ru
131 ,
I
l33Te
140 Ba
14 lCe
144 -
Ce
gross p
Q C
95Zr
106 Ru
131 T
I
l32Te
140 _
Ba
14 ice
144Ce
C
max
2.1
0.9
2.0
ND
ND
ND
ND
1.2
2.8
0.7
1.5
ND
ND
ND
ND
0.7
1.9
1.2
2.0
ND
ND
ND
ND
1.2
min
<0. 1
0.4
0.9
ND
ND
ND
ND
0.7
<0.1
0.5
0.8
ND
ND
ND
ND
0.7
<0.1
0.5
1.1
ND
ND
ND
ND
1.2
f V — ./ —
C
avg
0.5
0.04
0.06
ND
ND
ND
ND
0.03
0.4
0.01
0.008
ND
ND
ND
ND
0.002
0.5
0.02
0.03
ND
ND
ND
ND
0.007
52
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Abilene, TX
Amarillo, TX
Austin, TX
No. Days
Sampled
360
10
8
2
2
2
2
4
365
17
9
2
2
2
2
7
154
4
0
0
0
0
0
0
Type of
Radioactivity
gross (3
Q ^
95Zr
105 _
Ru
131 T
I
132Te
l40Ba
141 ,,
Ce
144 Ce
gross (3
9BZr
106 n
Ru
131 ,
I
132Te
140 Ba
141,,
Ce
144,,
Ce
gross 3
96Zr
106 Ru
131 ,
I
l32Te
140Ba
141Ce
144 „
Ce
C
max
9.2
1.1
2.1
0.5
0.4
0.9
0.5
1.1
2.9
1.1
1.5
0.2
0.1
0.3
0.1
1.3
6.7
0.1
ND
ND
ND
ND
ND
ND
±s a./ in-*, w *.
min
0 1
0.3
0.6
0.2
0.2
0.3
0.1
0.5
<0.1
0.2
0.9
0.2
0.1
0.3
0.1
0.9
<0.1
0.1
ND
ND
ND
ND
ND
ND
f\~f -M-/ *"
C
avg
0.5
0.02
0.03
0.002
0.002
0.003
0.002
0.01
0.5
0.03
0.03
0.001
0.001
0.002
0.001
0.02
0.3
0.002°
ND
ND
ND
ND
ND
ND
53
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Fort Worth, TX
Bryce Canyon, UT
Cedar City, UT
No . Days
Sampled a
341
22
17
2
2
2
2
14
338
40
33
4
4
4
4
18
361
44
33
3
3
3
1
27
Type of
Radioactivity
gross p
95Zr
T n^
100 Ru
131 j
l32Te
l40Ba
14 xce
144 Ce
gross p
Q K
95Zr
106 Ru
131 ,
132Te
l40Ba
1 4. T
141Ce
144 Ce
gross p
Q K
96Zr
106 Ru
131 ,
l32Te
l40Ba
14 lce
144 Ce
10-12u<
C
max
8.0
1.0
1.7
0.4
0.2
0.5
0.2
1.2
4.2
1.2
2.1
0.2
0.1
0.4
0.1
1.6
8.0
1.3
2.3
0.4
0.2
0.7
0.2
1.8
Ci/ml or f
c
mln
<0.1
0.2
0.7
0.1
0.1
0.3
0.1
0.6
<0.1
0.2
0.6
0.1
0.1
0.1
0.1
0.4
<0.1
0.4
0.6
0.1
0.1
0.1
0.2
0.3
)Ci/m3
C
avg
0.5
0.04
0.07
0.001
0.001
0.002
0.001
0.02
0.5
0.06
0.09
0.002
0.001
0.003
0.001
0.04
0.6
0.08
0.12
0.002
0.001
0.002
0.001
0.06
54
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled
Delta, UT 326
23
19
2
2
2
2
17
Dugway, UT 363
34
27
2
2
2
2
17
Enterprise, UT 364
34
24
2
2
2
2
17
Type of
Radioactivity
gross p
q c.
95Zr
1O3
Ru
1 31
l32Te
l40Ba
14 lce
144 Ce
gross p
q C
96Zr
106 _
Ru
1 31 ,
I
13STe
140Ba
14 !„
Ce
144 Ce
gross p
Q C
9BZr
106 ,-,
Ru
1 31 T
I
l3STe
140Ba
141Ce
144 Ce
10~~1SuCi/ml or
C C
max min
8.7
2.6
2.5
0.5
0.3
0.6
0.3
2.2
6.1
1.2
2.9
0.3
0.3
0.4
0.2
1.6
9.0
1.2
2.8
0.7
0.4
0.8
0.4
1.4
<0.1
0.4
0.6
0.3
0.2
0.4
0.3
0.6
<0.1
0.4
0.8
0.3
0.2
0.4
0.2
0.6
<0.1
0.5
0.9
0.2
0.2
0.3
0.2
0.8
pCi/m3
C
avg
0.5
0.05
0.07
0.002
0.001
0.003
0.002
0.05
0.6
0.07
0.11
0.002
0.001
0.002
0.001
0.05
0.6
0.07
0.09
0.002
0.002
0.003
0.002
0.04
55
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Garrison, UT
Logan, UT
Milford, UT
No. Days
Sampled a
364
32
22
2
2
2
2
15
362
32
19
1
0
1
1
17
358
17
9
2
2
2
2
8
Type of
Radioactivity
gross p
Q R
9BZr
103 Ru
lalj
l32Te
l40Ba
141Ce
144 Ce
gross P
9BZr
106 Ru
131 j
133Te
140 Ba
14 lce
144 Ce
gross p
O F,
96Zr
106 Ru
131 j
l3STe
140Ba
14 lce
144Ce
.»• vy u\
C
max
8.8
1.1
2.2
0.6
0.4
0.6
0.4
1.8
2.7
1.2
2.7
0.1
ND
0.2
.07
1.2
8.9
1.3
1.8
0.6
0.5
0.9
0.3
1.5
^ -*•/ !»»*. ^-f A
C .
nun
<0 1
0.2
0.9
0.5
0.4
0.5
0.3
0.6
<0.1
0.1
0.7
0.1
ND
0.2
.07
0.6
<0.1
0.5
0.9
0.4
0.2
0.7
0.3
0.5
j^VJ-/ *•*
C
avg
0.6
0.06
0.09
0.003
0.002
0.003
0.002
0.04
0.5
0.06
0.07
<0 . 001
ND
0.001
<0.001
0.04
0.5
0.03
0.03
0.003
0.002
0.004
0.002
0.02
56
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling No. Days
Location Sampled a
Monticello, UT 278
7
5
0
0
0
0
4
Pa rowan, UT 334
22
13
0
0
0
0
11
Provo, UT 348
29
16
2
2
2
2
12
Type of
Radioactivity
gross p
Q C
9BZr
103 Ru
131 -r
I
l32Te
l40Ba
14 1 ,,
Ce
144 Ce
gross p
Q E
95Zr
106 _
Ru
131 ,
I
1 32_
Te
140 r,
Ba
14 1 „
Ce
144 Ce
gross p
Q C
96Zr
los
Ru
1 31
l32Te
l40Ba
14 ^e
144 Ce
10"1 uCi/ml or
C C
max min
2.6
1.4
1.9
ND
ND
ND
ND
1.4
4.3
2.2
3.3
ND
ND
ND
ND
2.3
6.7
1.8
2.4
0.2
0.2
0.5
0.2
1.6
<0 1
0.5
1.0
ND
ND
ND
ND
0.6
<0.1
0.3
0.8
ND
ND
ND
ND
0.9
<0.1
0.4
0.9
0.2
0.2
0.4
0.1
0.7
pCi/m3
C
avg
0.4
0.01
0.02
ND
ND
ND
ND
0.01
0.5
0.06
0.07
ND
ND
ND
ND
0.04
0.6
0.06
0.06
0.001
0.001
0.002
0.001
0.04
57
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
i"~l ../^i-: /.«i «*. »^/"i-; /*«3
Sampling
Location
Roosevelt , UT
St. George, UT
Salt Lake City, UT
No. Days
Sampled a
364
35
24
2
2
2
2
19
365
28
15
1
1
1
1
11
363
43
34
2
2
2
2
27
Type of
Radioactivity
gross p
Q (=
95Zr
1 O^
103 Ru
131 ,
l32Te
l40Ba
141Ce
l44Ce
gross p
Q c
95Zr
106 ,,
Ru
1 31 -r
I
132Te
140Ba
14 1 .,
Ce
144 Ce
gross p
95Zr
106 Ru
131
1 32_
Te
140Ba
141Ce
144Ce
.*. \S U1
C
max
7.6
1.8
2.8
0.4
0.3
0.7
0.3
1.7
3.2
1.0
2.3
0.2
0.1
0.2
0.1
1.1
5.3
1.6
4.2
0.4
0.3
0.4
0.2
1.8
\s *. / tit.*. *_» *
min
<0.1
0.3
0.9
0.2
0.1
0.5
0.2
0.7
<0.1
0.3
1.0
0.2
0.1
0.2
0.1
0.6
<0.1
0.4
0.8
0.2
0.1
0.4
0.1
0.5
f v -*•/ •**
C
avg
0.5
0.07
0.11
0.002
0.001
0.003
0.001
0.06
0.5
0.05
0.06
0.001
<0.001
0.001
<0.001
0.03
0.6
0.09
0.15
0.002
0.001
0.002
0.001
0.08
58
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Wendover, UT
Seattle, WA
Spokane, WA
No. Days
Sampled a
365
31
21
2
1
1
1
12
360
19
11
0
0
0
0
10
328
48
42
0
0
0
0
42
Type of
Radioactivity
gross p
Q R
95Zr
103 Ru
131 ,
I
132Te
140 „
Ba
141 ~
Ce
144 _
Ce
gross p
Q c;
9SZr
106 n
Ru
131T
I
13S™
Te
140 Ba
14 !„
Ce
144 .,
Ce
gross p
9BZr
106 _
Ru
131 T
I
l3STe
l40Ba
14 1 _
Ce
144,,
Ce
±\J U<
C
max
3.5
1.1
2.9
0.2
0.1
0.2
0.2
2.0
1.6
0.5
1.2
ND
ND
ND
ND
0.3
1.9
1.2
2.1
ND
ND
ND
ND
1.6
l*J./ Ill A tJi
C .
mm
<0. 1
0.5
0.9
0.1
0.1
0.2
0.2
0.7
<0.1
0.1
0.4
ND
ND
ND
ND
0.3
<0.1
0.2
0.3
ND
ND
ND
ND
0.2
HVJ./ Ill
C
avg
0.5
0.06
0.08
0.001
<0 . 001
0.001
0.001
0.04
0.2
0.01
0.02
ND
ND
ND
ND
0.008
0.4
0.06
0.08
ND
ND
ND
ND
0.04
59
-------
Table 1 1971 Summary of Analytical Results
for the Air Surveillance Network
Radioactivity Concentration
Sampling
Location
Rock Springs , WY
No. Days
Sampled a
362
22
15
2
2
1
1
10
Type of
Radioactivity
gross p
9SZr
103 Ru
131 j
l32Te
l40Ba
141Ce
144 Ce
*.\s U'
C
max
4.4
1.4
2.2
0.2
0.2
0.3
0.2
1.7
l^-L/ U1J. \Ji
C .
mm
0.4
1.1
0.2
0.2
0.3
0.2
1.0
YJ\s-*-f *H
C
avg
0.5
0.05
0.07
0.001
0.001
0.002
0.001
0.04
Worland, WY
363
34
16
1
1
1
0
11
gross p
95Zr
los
Ru
131
132
140
141
144
Te
Ba
Ce
Ce
2.3
1.1
1.8
0.2
0.1
0.3
ND
1.2
0.2
0.7
0.2
0.1
0.3
ND
0.8
0.5
0.05
0.05
0.001
<0.001
0.001
ND
0.03
For gross beta, this number represents the number of days of the year that
the sampler was operated. For radionuclides, this number represents the
number of sampling days of the year during which the radionuclide was de-
tected.
Since station operated only during the first 4j months of the year the
average was computed over 126 days instead of 365 days.
Since station didn't operate during months of March, April, May and most of
June, the average was computed over 154 days instead of 365 days.
60
-------
Table 2 1971 Summary of Background Radiation Doses for the Dosimetry Network
Station
Location
Adaven, NV
Alamo, NV
Ash Meadows, NV
Austin, NV
Baker, CA
Bars tow, CA
Battle Mountain, NV
Beatty, NV
Beaver Dam Summit, UT
Big Pine, CA
Bishop, CA
Blue Eagle Ranch, NV
Blue Jay, NV
Butler Ranch, NV
Cactus Springs , NV
Caliente, NV
Carlin, NV
Casey's Ranch, NV
Cedar City, UT
Clark Station, NV
Coyote Summit, NV
Currant, NV
Currant Maint. Sta. , NV
Currie, NV
Death Valley Junct. , NV
Desert Game Range, NV
Diablo Maint. Sta., NV
Duckwater, NV
Dunphy, NV
Elgin, NV
Elko, NV
Ely, NV
Eureka Maint. Sta. , NV
Map
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Background Dose
Measurement Equivalent Rate (mrem/d)
Period Max. Min. Avg.
12/29/70
12/29/70
12/30/70
12/29/70
12/28/70
12/28/70
12/30/70
12/29/70
12/29/70
12/29/70
12/29/70
12/30/70
12/29/70
12/29/70
12/29/70
12/29/70
12/31/70
12/30/70
12/30/70
12/29/70
12/29/70
12/30/70
12/30/70
1/2/71
12/30/71
12/29/70
12/29/70
12/30/70
12/31/70
12/30/71
12/31/70
12/29/70
12/29/70
- 1/10/72
- 1/10/72
- 1/5/72
- 1/12/72
- 1/5/72
- 1/5/72
- 2/2/71
- 1/6/72
- 1/10/72
- 1/6/72
- 1/6/72
- 1/13/72
- 1/11/72
- 1/10/72
- 1/6/72
- 1/11/72
- 2/2/71
- 1/11/72
- 1/11/72
- 1/11/72
- 1/10/72
- 1/13/72
- 1/13/72
- 2/5/71
- 1/5/72
- 1/6/72
- 1/10/72
- 1/13/72
- 2/2/71
- 1/12/72
- 2/2/71
- 1/11/72
- 1/12/72
0.7
0.5
0.5
0.8
0.5
0.5
-
0.6
0.5
0.5
0.5
0.4
0.7
0.4
0.4
0.6
-
0.4
0.6
0.6
0.7
0.5
0.5
-
0.5
0.4
0.7
0.5
-
0.6
-
1.0
0.6
0.3
0.2
0.3
0.5
0.3
0.3
-
0.4
0.2
0.3
0.3
0.2
0.4
0.2
0.2
0.3
-
0.2
0.2
0.3
0.4
0.3
0.3
-
0.3
0.2
0.4
0.3
-
0.4
-
0.2
0.3
0.55
0.38
0.38
0.64
0.37
0.45
0.54a
0.53
0.33
0.41
0.42
0.30
0.50
0.28
0.34
0.46
0.54a
0.34
0.39
0.51
0.52
0.41
0.41
0.56a
0.42
0.33
0.54
0.39
0.55a
0.48
0.49a
0.75
0.41
Annual
Background
Dose
(mrem/a)
200
140
140
230
140
160
200
190
120
150
150
110
180
100
120
170
200
120
140
190
190
150
150
200
150
120
200
140
200
180
180
270b
150
61
-------
Table 2 1971 Summary of Background Radiation Doses for the Dosimetry Network
(Continued)
Annual
Background Dose Background
Station
Location
Furnace Creek, CA
Gardner Ranch, NV
Garrison, UT
Geyser Maint. Sta. , NV
Goldfield, NV
Groom Lake , NV
Halleck, NV
Hancock Summit, NV
Hiko, NV
Hot Creek Ranch, NV
Independence , CA
Indian Springs , NV
Koynes , NV
Las Vegas (Placak) , NV
Las Vegas (USDI) , NV
Lathrop Wells, NV
Littlefield, AZ
Lockes Ranch, NV
Logandale, NV
Lone Pine , CA
Lida, NV
Lida Junction, NV
Lund, NV
Manhattan, NV
Mesquite, NV
Modena, UT
Montgomery Pass, NV
Nevada Farms , NV
New Castle, UT
Nuclear Eng. Co. , NV
Nyala, NV
Oasis, NV
Map
No.
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
67
68
69
Measurement Equivalent Rate (mrem/d)
Period Max. Min. Avg.
12/30/70 -
12/30/70 -
12/29/70 -
12/29/70 -
12/30/70 -
12/30/70 -
12/31/70 -
12/29/70 -
12/29/70 -
12/29/70 -
12/29/70 -
12/29/70 -
12/29/70 -
12/31/70 -
12/31/70 -
12/29/70 -
12/29/70 -
12/30/70 -
12/29/70 -
12/29/70 -
12/30/70 -
12/30/70 -
12/29/70 -
12/29/70 -
12/29/70 -
12/30/70 -
12/30/70 -
12/29/70 -
12/30/70 -
12/30/70 -
12/30/70 -
12/31/70 -
1/6/72
1/13/72
1/12/72
1/10/72
1/11/72
1/10/72
2/3/71
1/10/72
1/10/72
1/11/72
1/6/72
1/6/72
1/10/72
1/12/72
HI/12
1/5/72
1/10/72
1/13/72
1/10/72
1/6-72
1/10/72
1/10/72
1/11/72
1/12/72
1/10/72
1/11/72
1/6/72
1/10/72
1/11/72
1/6/72
1/11/72
2/1/71
0.4
0.6
0.5
0.5
0.7
0.4
-
0.7
0.6
0.6
0.5
0.8
0.6
0.4
0.4
0.6
0.5
0.5
0.5
0.5
0.6
0.6
0.5
0.8
0.5
0.7
0.7
0.7
0.6
0.7
0.6
0.3
0.4
0.3
0.3
0.4
0.2
-
0.4
0.2
0.3
0.3
0.3
0.3
0.2
0.2
0.4
0.2
0.3
0.1
0.4
0.4
0.4
0.3
0.4
0.2
0.4
0.3
0.4
0.4
0.4
0.2
0.34
0.52
0.37
0.41
0.54
0.33
0.53a
0.56
0.39
0.44
0.42
0.60
0.41
0.30
0.29
0.49
0.41
0.41
0.36
0.48
0.48
0.52
0.36
0.64
0.37
0.54
0.52
0.51
0.46
0.58
0.39
0.53a
Dose
(mrem/a)
120
190
140
150
200
120
190
200
140
160
150
220
150
110
110
180
150
150
130
180
170
190
130
230
140
200
190
190
170
210
140
190
62
-------
Table 2 1971 Summary of
Background Radiation
(Continued)
Doses for the Dosimetry Network
Station
Location
Olancha, CA
Pahrump, NV
Pine Creek Ranch, NV
Pioche, NV
Queen City Summit, NV
Randsburg, CA
Reed Ranch, NV
Ridgecrest, CA
Round Mountain , NV
Ruby Valley, NV
St. George, UT
Scotty's Junction, NV
Selbach Ranch, NV
Shell Oil Site, NV
Shoshone , CA
Site C, NV
Springdale, NV
Spring Meadows , NV
Sunnyside, NV
Tempiute, NV
Tonopah, NV
Tonopah Airport , NV
Tonopah Test Range, NV
Twin Springs Ranch, NV
Ursine, NV
Valley of Fire, NV
Warm Springs, NV
Warm Springs Ranch, NV
Wells, NV
Wendover, UT
Map
No.
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
Background Dose
Measurement Equivalent Rate (mrem/d)
Period Max. Min. Avg.
12/29/70 -
12/31/70 -
12/29/70 -
12/30/70 -
12/29/70 -
12/29/70 -
12/29/70 -
12/29/70 -
12/29/70 -
1/1/71 -
12/29/70 -
12/30/70 -
12/29/70 -
12/30/70 -
12/31/70 -
12/29/70 -
12/30/70 -
12/30/70 -
12/29/70 -
12/29/70 -
12/29/70 -
12/29/70 -
3/2/71 -
12/29/70 -
12/30/70 -
12/29/70 -
12/29/70 -
12/29/70 -
1/1/71 -
12/31/70 -
1/6/72
1/4/72
1/10/72
1/11/72
1/10/72
1/6/72
1/10/72
1/6/72
1/12/72
2/4/71
1/11/72
1/10/72
1/5/72
1/13/72
1/4/72
1/11/72
1/5/72
1/5/72
1/11/72
1/10/72
1/11/72
1/11/72
1/11/72
1/10/72
1/11/72
1/10/72
1/11/72
1/10/72
2/2/71
2/1/71
0.5
0.5
0.6
0.5
0.8
0.4
0.7
0.5
0.8
0.4
0.6
0.7
0.4
0.5
0.7
0.6
0.4
0.5
0.7
0.8
1.0
0.6
0.7
0.6
0.5
1.4
0.4
0.3
0.2
0.4
0.2
0.4
0.2
0.3
0.3
0.5
0.2
0.3
0.4
0.2
0.3
0.4
0.4
0.3
0.3
0.3
0.4
0.4
0.4
0.4
0.3
0.3
0.5
0.2
0.38
0.36
0.52
0.37
0.57
0.37
0.48
0.40
0.68
0.4ia
0.33
0.52
0.53
0.32
0.42
0.51
0.52
0.35
0.38
0.46
0.66
0.56
0.49
0.49
0.50
0.39
0.83
0.30
0.57a
0.36a
Annual
Background
Dose
(mrem/a)
140
130
190
140
210
140
180
150
250
150
120
190
190
120
150
190
190
130
140
170
240
200
180
180
180
140
300°
110
210
130
a
b
c
Average is only for one monthly measurement period; station was terminated in February.
Elevated value is due to 137Cs check source near TLD station. The 1970 value was 150mrem/a.
Elevated value due to nearby stream containing 226Ra and daughters.
63
-------
Table 3 Anomalous TLD Readings in 1971
Personnel TLD's
Personnel Map
Location No.
Blue Jay, NV 13
Measurement Period
Issue Date Collection Date
02/03/71 -
06/09/71 -
08/10/71 -
10/05/71 -
03/03/71
07/15/71
09/09/71
11/16/71
TLD Readings
(mrem)
52
190
150
250
Beatty, NV
8 03/11/71 - 04/14/71
30,000
Station TLD's
Station Map Measurement Period TLD Readings
Location No. Issue Date Collection Date (mrem)
Nuclear Eng.
Co., NV 67 12/30/70 -
02/03/71 -
04/15/71 -
05/11/71 -
10/05/71 -
12/02/71 -
Tonopah, NV 90 09/08/71 -
02/03/71
03/09/71
05/11/71
06/09/71
11/18/71
01/06/72
10/04/71
20
20
11
17
23
7200£
34
23
12
73a
17
12003
njo3
17
490a
2300a
90a
44s
1200a
16
19
= Anomalous values
64
-------
Table 4 Analytical Procedures for Milk and Water
Type of
Analysis
Analytical
Equipment
Counting
Period
(min)
Analytical
Procedures
Sample
Size
(liter)
Detection
Limit
(lCT9uCi/ml
or pCi/lV
Gamma
Spectroscopy
89
Sr_90
3H
234 .'235 238
}
TT
U
10-40
50
Gamma spec-
trometer with
4-inch-thick
by 4-inch
diameter Nal
(Tl-activated)
crystal with
input to 200
channels
(0-2 MeV) of
400-channel,
pulse-height
analyzer.
Low-background-
thin-windowj
gas-flow pro-
portional
counter with a
2.25" diameter
window
(80 jug/cm).
Automatic 100
liquid
scintillation
counter with
output printer.
Alpha spectrometer 1000-
with 45 mm2, 300 urn 1400
depletion depth
silicon surface bar-
rier detectors oper-
ated in vacuum cham-
bers.
Radionuclide
concentra-
tions quan-
titated from
gamma spec-
trometer
data by com-
puter using
the matrix
technique.
3.5
Generally 10
for most com-
mon fallout
radionuclides
in a simple
spectrum.
Chemical
separation
by ion ex-
change.
Separated
sample counted
successively;
activity cal-
culated by
simultaneous
equations.
Sample pre-
pared by
distillation.
Sample is
digested with
acidj separated
by ion exchange3
electroplated
on stainless
steel planchet
and counted by
alpha spectro-
metry.
1.0
89Sr
90 Sr
0.005
400
,ab
2xlO~
11
65
-------
Table 4 Analytical Procedures for Milk and Water (cont'd)
Type of
Analysis
Analytical
Equipment
Counting
Period
(min)
Analytical
Procedures
Sample
Size
(liter)
Detection
Limit
(10-9MCi/ml
or pCi/l)c
gross U
Turner fluoro-
meter
gross alpha
gross beta
Low-level end
window^ gas flow
proportional
counter with a
2^" diameter
window (80/ig/cm2)
50
Sample is
fused into a
pellet with
Na-K flux and
the fluor-
escence is de-
termined under
ultraviolet
light.
Sample eva-
porated;
residue count-
ed.
2.5xl(T4
0.2
O.OOljug/ml
a
P
The detection limit for a given sample is defined as the 2-sigma counting
error when the measured concentration is < the 2 sigma counting error.
The detection limit for samples analyzed during July and thereafter was
«320pCi/lo
'Except gross U which is given as jug/ml.
66
-------
Table 5 1971 Summary of Analytical Results for the Milk Surveillance Network
No. Type of
Radioactivity Cone.
Sampling
Location
Bishop , CA
Sierra Farms
Hinkley, CA
Bill Nelson Dairy
Independence, CA
Smith Ranch
Olancha, CAb
Hunter Ranch
Alamo, NV
Wright Dairy
Austin, NV
Triple T Ranch
Map Sample of Radio-
No. Type3 Samples activity
1 11 12 137Cs
89gr
90gr
3H
2 12 12 137Cs
89sr
9°Sr
3H
3 13 7 137Cs
89Sr
9°Sr
3H
4 13 2 137Cs
89Sr
9°Sr
3H
5 12 12 137Cs
89Sr
9°sr
3H
6 13 11 137Cs
89Sr
9°Sr
3H
10-9pCi/ml or pCi/1
err
max ^min avg
20
9
4
NA
<10
4
3
NA
10
5
3
NA
<10
<5
3
NA
20
10
5
NA
40
7
7
1300
<10
<2
<1
NA
<10
<1
<1
NA
<10
<2
<2
NA
<10
<2
<1
NA
<10
<2
<2
NA
10
<2
<1
410
<10
<5
<2
NA
<10
<4
<2
NA
<10
<4
<2
NA
<10
<4
<2
NA
<10
<5
<3
NA
<20
<4
<3
760
67
-------
Table 5 1971 Summary of Analytical Results for the Milk Surveillance Network
No. Type of
Radioactivity Cone.
Location
Austin, NV
Young's Ranch
Belmont, NV
Pine Creek Ranch
Beowawe, NVb
Friesen Ranch
Caliente, NV
Young Ranch
Currant, NV
Blue Eagle Ranch
Currie, NVb
Bill Lear Ranch
No. Typea Samples activity
7 13 1 137Cs
"Sr
9°Sr
3H
8 13 10 137Cs
9°Sr
3H
9 13 1 137Cs
89Sr
9°Sr
3H
10 13 8 137Cs
89Sr
9°Sr
3H
11 13 8 137Cs
89Sr
9°Sr
3H
12 13 2 137Cs
89Sr
90Sr
3H
Cmax Cmin
10
NA
NA
NA
70 30
9 <4
10 <1
NA NA
20
<5
6
NA
10 <10
<5 <2
3 <1
NA NA
40 <10
<5 <3
7 2
NA NA
20 10
<5 <5
8 7
NA NA
Cavg
_
—
—
-
50
<5
<7
NA
-
-
-
<4
<2
NA
<20
<5
<4
NA
20
<5
<8
NA
68
-------
Table 5 1971 Summary of Analytical Results for the Milk Surveillance Network
Sampling
No. Type of
Map Sample of Radio-
Radioactivity Cone.
10~9uCi/ml or pCi/1
Location
Deeth, NV13
Lotspeich Ranch
Duckwater, NV
Halstead Ranch
Elko, NVb
Anchor S Ranch
Eureka, NV
Martin Ranch
Hiko, NV
Schofield Dairy
Indian Springs , NV
Cambern Ranch
No. Type3 Samples activity
13 13 2 137Cs
89Sr
9°Sr
3H
14 13 11 137Cs
89Sr
9°Sr
3H
15 13 1 137Cs
89Sr
90Sr
3H
16 13 11 137Cs
89Sr
9°Sr
3H
17 12 12 137Cs
89Sr
9°Sr
3H
18 13 2 !37Cs
89Sr
9°Sr
3H
Cmax
20
<5
6
NA
40
23
6
NA
<10
<5
3
NA
40
26
16
NA
10
12
4
1000
<10
4
3
NA
Cmin Cavg
20 20
<5 <5
4 5
NA NA
<10 <20
<2 <7
<1 <3
NA NA
-
-
-
20 30
<3 <8
4 9
NA NA
<10 <10
<2 <4
<2 <3
290 <420
<10 <10
<2 <3
<1 <2
NA NA
69
-------
Table 5 1971 Summary of Analytical Results for the Milk Surveillance Network
Sampling
Location
Indian Springs , NV
Indian Springs Ranch
Las Vegas , NV
Anderson Dairy
Las Vegas , NV
Arden Dairy
Las Vegas , NV
LDS Dairy Farms
Lathrop Wells , NV
Eastman Ranch
Lathrop Wells, NV
Ellis Ranch
No. Type of Radioactivity
Map Sample of Radio- 10~9yCi/ml or
No. Type3 Samples activity Cmax Cmin
19 13 7 137cs <10 <10
89sr <5 <2
90Sr 3 <1
3H NA NA
20 11 12 137Cs <10 <10
89Sr 5 <2
9°Sr 3 <2
3H NA NA
21 11 12 137Cs <10 <10
89Sr <5 <2
90Sr 3 <1
3H NA NA
22 12 12 137cs <10 <10
Sr 3 <1
^ Sr 7 <1_
3H 420 <290
23 13 7 137Cs <10 <10
89Sr <5 <2
90Sr <3 <2
3H NA NA
24 13 1 137Cs <10
89Sr 3
90Sr 2
3H NA
Cone.
pCi/1
Cavg
<10
<4
<2
NA
<10
<4
<2
NA
<10
<5
<2
NA
<10
<3
<2
<360
<10
<5
<2
NA
_
-
-
_
70
-------
Table 5 1971 Summary of Analytical Results for the Milk Surveillance Network
No. Type of
Radioactivity Cone.
Sampling
Location
Lathrop Wells, NV
Mills Ranch
Lida, NV
Lida Livestock
Logandale , NV
Vegas Valley Dairy
Lund, NV
McKenzie Dairy
McGill, NV
Lars en Ranch
Mes quite, NV
Hughes Bros. Dairy
Map Sample of Radio- 10~9y
No. Type3 Samples activity Cmax
25 13 2 137cs <1Q
89sr <3
90Sr 9
3H NA
26 13 8 137cs 20
89sr <5
90sr 7
3H NA
27 12 10 137Cs <10
89gj- <5
9^Sr 5
3H NA
28 12 12 137Cs 20
8 9 C y < Q
Sr 6
3H 1100
29 13 4 137Cs 10
89Sr 5
90Sr 4
3H NA
30 12 11 137Cs 20
89Sr <5
90Sr 3
3H 520
Ci/ml or pCi/1
Cmin Cavg
<10 <10
<1 <2
4 <7
NA NA
<10 <10
2 <4
2 4
NA NA
<10 <10
<2 <4
<1 <3
NA NA
<10 <10
<2 <4
3 <4
<290 <440
<10 <10
2 <4
1 <2
NA NA
<10 <10
<2 <4
<1 <2
<320 <370
71
-------
Table 5 1971 Summary of Analytical Results for the Milk Surveillance Network
Sampling
Location
No. Type of
Map Sample of Radio-
No. Type3 Samples activity
Radioactivity Cone.
10-9yCi/ml or pCi/1
max
Cmin
Moapa, NV
Searles Dairy
Nyala, NV
Sharp ' s Ranch
Pahrump, NV
Owens Ranch
Panaca, NV
Lee Ranch
Round Mtn, NV
Karl Berg Ranch
Shoshone, NV
Kirkeby Ranch
31
32
33
34
35
36
12
13
13
13
13
13
12
12
12
12
137Cs
3H
10
<5 <2 <4
4 <2 <3
NA NA NA
137Cs
89Sr
9°Sr
3H
137Cs
89Sr
90Sr
3H
137Cs
89Sr
9°Sr
3H
137Cs
89Sr
9°Sr
3H
137Cs
89Sr
9°Sr
3H
20 <10
6 I
5 <2
720 <310
10 <10
<5 <1
2 <1
NA NA
40 <10
27 <2
12 <1
NA NA
20 <2
<5 4
6 <2
NA NA
20 <10
<5 <2
4 2
NA NA
<10
<4
<3
<400
<10
<3
<1
NA
<20
<7
<4
NA
<10
<4
<3
NA
<10
<4
<3
NA
72
-------
Table 5 1971 Summary of Analytical Results for the Milk Surveillance Network
Sampling
No. Type of
Map Sample of Radio-
Radioactivity Cone.
10-9uCi/ml or pCi/1
Location No. Type°
Springdale, NV
McCurdy Ranch 37 13
Wells, NVb
Willow Creek Ranch 38 13
Garrison, UT
Gonders Ranch 39 13
Newcastle, UT
Newcastle Dairy 40 12
St. George, UT
R. Cox Dairy 41 12
Samples activity
12 137Cs
89Sr
9°Sr
3H
131-j-
89Sr
9°Sr
3H
8 ^37Cs
89Sr
9°Sr
3H
11 !37Cs
89Sr
9°Sr
3H
11 137Cs
89Sr
9°Sr
3H
max
20
<5
4
NA
730
10
<5
5
NA
20
<5
3
NA
20
5
4
NA
20
<5
5
NA
"'rain avg
<10 <10
<1 <4
<1 <2
NA NA
<10 <30
<5 <5
4 5
NA NA
<10 <10
<2 <4
<2 <2
NA NA
<10 <10
<2 <4
<1 <2
NA NA
<10 <10
<2 <4
<1 <2
NA NA
11 = Pasteurized Milk
12 = Raw Milk from Grade A Producer(s)
13 = Raw Milk from family cow(s)
= Discontinued
NA = Not Analyzed
73
-------
Table 6 1971 Summary of Analytical ResuJts for the Water Surveillance Network
Sampling
Location
Bishop, CA
Fish & Game Office
Bishop, CA
Owens River 3 mi E.
Death Valley Jet, CA
Lila's Cafe
Furnace Creek, CA
Pond
Furnace Creek, CA
Visitors Center
Hinkley, CA
Bill Nelson Dairy
Little Lake, CA
Little Lake Ranch
Lone Pine, CA
Diaz Lake
No. Type of
Map Sample of Radio-
No. Type3 Samples activity
1 24 12 gross a
gross 8
3H
2 22 12 gross a
gross 8
3H
3 24 12 gross a
gross 8
3H
4 21 12 gross a
gross 8
3H
5 24 12 gross a
gross 8
3H
6 23d 12 gross a
gross 8
3H
7 21 9 gross a
gross 8
3H
8 21 12 gross a
gross 8
3H
Radioactivity
10~9yCi/ml or
C C
max min
4
7
NA
7
15
NA
10
14
<400
7
17
NA
7
13
NA
14
17
NA
25
27
NA
24
24
NA
<2
<2
NA
2
15
NA
2
8
<300
3
8
NA
<2
8
NA
<3
<2
NA
3
6
NA
<2
9
NA
Cone.
pCi/1
Cavg
<2
<4
NA
<4
7
NA
<7
11
<360
<5
10
NA
<4
10
NA
<9
<8
NA
11
17
NA
<15
18
NA
% of
Guide
<7
<13
-
<13
23
-
<23
37
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling Map
Location No.
Lone Pine, CA
Forest Ranger Station 9
Olancha, CA
Haiwee Reservoir 10
Ridgecrest, CA
City Hall 11
Shoshone, CA
Chevron Service Sta. 12
Adaven , NV
Simpson Ranch 13
Alamo, NV
Butler Ranch 14
Alamo, NV
Pahranagat Lake 15
Alamo, NV
Wright Dairy 16
No. Type of
Sample of Radio-
Type3 Samples activity
24 12 gross a
gross 3
3H
21 12 gross a
gross 3
3H
24^ 12 gross a
gross 3
3H
24d 12 gross a
gross 3
3H
22 12 gross a
gross 3
3H
77 d 19
z/ -^ gross a
gross 3
3H
21 12 gross a
gross 3
3H
24 12 gross a
gross 3
3H
Radioactivity Cone.
10-9yCi/ml or pCi/1
max Tnin avg
5
9
NA
9
10
NA
8
6
NA
10
22
NA
9
9
NA
8
10
NA
41
90
NA
9
21
NA
<2
<2
NA
3
4
NA
<2
<2
NA
<2
15
NA
3
2
NA
2
<2
NA
17
23
NA
<2
10
NA
<2
<4
NA
6
7
NA
<3
<4
NA
<6
19
NA
6
<4
NA
<5
<5
NA
27
35
NA
<5
13
NA
% of
Guide
<7
<13
-
20
23
-
<10
<13
-
<20
63
-
20
<13
-
<17
<17
-
90
117
-
<17
43
_
75
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling Map Sample
Location No. Type3
Ash Meadows , NV
Ash Meadows Lodge 17 23
Ash Meadows , NV
Ash Meadows Pond 18 21
Austin, NV
Chevron Service Sta. 19 24
b
Battle Mt, NV
Glen's Chevron Sta. 20 24
Beatty , NV
Richfield Ser. Sta. 21 24
Blue Diamond, NV
Post Office 22 24
Blue Jay, NV
Highway Maint. Sta. 23 2T
Cactus Springs, NV
Mobile Ser. Sta. 24 24d
No. Type of
of Radio-
Samples activity
12 gross a
gross B
3H
10 gross a
gross B
3H
11 gross a
gross B
3H
2 gross a
gross B
3H
12 gross a
gross B
3H
11 gross a
gross B
3H
12 gross a
gross B
3H
12 gross a
gross B
3H
Radioactivity Cone.
10-9uCi/ml or pCi/1
Cmax ^in Cavg
11
24
<400
18
30
NA
48
26
NA
4
6
NA
20
17
<400
6
12
<400
4
10
NA
6
4
<400
5
13
<310
3
11
NA
<3
<3
NA
<2
5
NA
3
8
<330
<2
<2
<290
<2
3
NA
<2
<2
<290
<7
18
<360
10
16
NA
<28
<17
NA
<2
5
NA
<11
12
<370
<4
<4
<330
<3
5
NA
<3
<3
<360
% of
Guide
<23
60
<1
33
53
-
<93
<57
-
<7
17
-
<33
40
<1
<13
<13
<1
<10
17
-
<10
<10
<1
76
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling Map
Location No.
Caliente, NV
Agriculture Ext. Sta. 25
Caliente, NV
Meadow Valley Wash 26
b
Carlin, NV
Carlin Conoco Sta. 27
Clark Sta. , NV
Five Mile Ranch 28
Coyote Summit, NV
Sand Springs Well 29
Currant , NV
Currant Pond 30
Currant, NV
Currant Ranch Cafe 31
b
Currie, NV
Kitt Lear Ranch 32
No. Type of
Sample of Radio-
Type3 Samples activity
24 d 12 gross
gross
3H
22 12 gross
gross
3H
24 2 gross
gross
3H
27d 12 gross
gross
3H
23 12 gross
gross
3H
21 12 gross
gross
3H
d
24 12 gross
gross
3H
23 2 gross
gross
3H
a
6
a
6
a
8
a
8
a
6
a
8
a
8
a
8
Radioactivity Cone.
10-9uCi/ml or pCi/1
max min avg
12
10
NA
18
40
NA
5
7
NA
<4
10
NA
47
24
NA
22
13
NA
14
12
NA
11
13
NA
2
<3
NA
4
6
NA
4
6
NA
<2
<3
NA
<3
5
NA
6
<3
NA
6
<3
NA
7
8
NA
<7
<5
NA
<8
18
NA
5
7
NA
<3
<7
NA
<14
11
NA
12
<6
NA
8
<6
NA
9
11
NA
% of
Guide
<23
<17
-
<27
60
-
17
23
-
<10
<23
-
<47
37
-
40
<20
-
27
<20
-
30
37
-
77
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
No. Type of
Radioactivity Cone.
Sampling Map
Location No.
Diablo, NV
Highway Maint. Sta. 33
Diablo, NV
Reed Ranch 34
Elgin, NV
Water Tower 35
Elko, NVb
Phillips 66 Truck Stop 36
Ely, NV
Chevron Ser. Sta. 37
Ely, NV
Comins Lake 38
Eureka, NV
Chevron Ser. Sta. 39
Glendale, NV
Chevron Ser. Sta. 40
Sample of Radio-
Type3 Samples activity
23d 11 gross a
gross 3
3H
21 12 gross a
gross 6
3H
24 12 gross a
gross 3
3H
24 2 gross a
gross 3
3H
24 12 gross a
gross 3
3H
21 7 • gross a
gross 3
3H
24 11 gross a
gross 3
3H
24 12 gross a
gross 3
3H
10~9yCi/ml or
''max Snin
6
10
NA
37
85
NA
13
15
NA
13
20
NA
7
6
NA
21
64
NA
8
13
NA
11
13
NA
<2
<3
NA
8
8
NA
2
6
NA
11
20
NA
2
<2
NA
<6
19
NA
<3
<2
NA
4
7
NA
pCi/1 -
Cavg
<3
<6
NA
23
30
NA
9
10
NA
12
20
NA
4
<4
NA
<11
45
NA
<4
<6
NA
<5
10
NA
% of
Guide
<10
<20
-
77
100
-
30
33
-
40
67
-
13
<13
-
<37
150
-
<13
<20
-
<17
33
-
78
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling
Location
Glendale, NV
Muddy River
Goldfield, NV
Alkali Springs
Goldfield, NV
Chevron Ser. Sta.
Hawthorne, NV
Walker Lake
Hiko, NV
Crystal Springs
Hiko, NV
Schofield Dairy
Indian Springs
Chevron Ser. Sta.
Las Vegas, NV
Cal-Nev Jet Fuels
No. Type of
Map Sample of Radio-
No. Type3 Samples activity
41 22 12 gross a
gross 8
3H
42 21 11 gross a
gross B
3H
43 24 12 gross a
gross 8
3H
44 21 4 gross a
gross 8
3H
45 27d 12 gross a
gross 8
3H
46 24 12 gross a
gross 8
3H
47 24 12 gross a
gross 8
3H
d
48 23 12 gross a
gross 8
3H
Radioactivity Cone.
10-9pCi/ml or pCi/1
Cmax Cmin Cavg
14
33
NA
12
41
NA
5
6
NA
24
340
NA
11
16
NA
40
37
NA
7
7
<400
5
8
<400
<2
11
NA
<2
7
NA
<2
2
NA
<2
110
NA
5
5
NA
20
26
NA
<3
<2
<290
2
<3
<310
<8
18
NA
<6
24
NA
<4
<4
NA
<9
280
NA
8
8
NA
26
29
NA
<5
<4
<360
<4
<4
<370
% of
Guide
<27
60
-
<20
80
-
<13
<13
-
<30
933
-
27
27
-
87
97
-
<17
<13
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling Map
Location No.
Las Vegas , NV
Cunningham Ranch 49
Las Vegas , NV
Craig Ranch Golf Crse. 50
Las Vegas, NV
Desert Game Range 51
Las Vegas, NV
Desert Game Rge. Pond 52
Las Vegas , NV
Francis Residence 53
Las Vegas, NVb
Frommer Residence 54
Las Vegas , NV
Lab II WERL 55
Las Vegas, NV
Lake Mead Vegas Wash 56
No. Type of
Sample of Radio-
Type3 Samples activity
23 12 gross a
gross 6
3H
23d 12 gross a
gross 3
3H
23d 12 gross a
gross 6
3H
21 11 gross a
gross 8
3H
23d 4 gross a
gross 6
3H
23d 7 gross a
gross 3
3H
24 12 gross a
gross 6
3H
21 12 gross a
gross 0
3H
Radioactivity Cone.
10-9vCi/ml or pCi/1
Cmax Cmin Cavg
11
7
<400
8
7
<400
13
8
<400
7
5
<400
<6
6
<340
10
4
<400
9
11
1400
7
11
1500
<2
<2
<280
<2
<2
<290
<2
3
<290
2
<2
<310
<4
<3
<330
2
<2
<310
<4
<2
<400
<2
7
720
<4
<3
<360
<5
<4
<360
<6
5
<370
<4
<3
<380
<5
<4
<340
4
<3
<390
<5
<6
<840
<5
9
1100
% of
Guide
<13
<10
<1
<17
<13
<1
<20
<17
<1
<13
<10
<1
<17
13
<1
13
<10
<1
<17
<20
<1
<17
30
<1
80
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling Map Sample
Location No. Type3
Las Vegas , NV
LDS Dairy Farms 57 24d
Las Vegas , NV
Lloyd Ranch 58 23d
Las Vegas , NV
LV Water Dist. Well 28 59 24d
Las Vegas , NV
Municipal Golf Crse. 60 23
Las Vegas, NV
Tule Springs 61 23d
Las Vegas , NV
Tule Springs Pond 62 21
Las Vegas , NV
Vegas Estates 63 23d
Lathrop Wells, NV
Texaco Ser. Sta. 64 24
No. Type of
of Radio-
Samples activity
12 gross a
gross 3
3H
12 gross a
gross 3
3H
12 gross a
gross 3
3H
12 gross a
gross 3
3H
12 gross a
gross 3
3H
12 gross a
gross 3
3H
12 gross a
gross 3
3H
12 gross a
gross 3
3H
Radioactivity Cone.
10-9uCi/ml or pCi/1
Cmax Cmin Cavg
13
18
<400
10
11
<400
6
8
<400
5
6
<400
7
7
<400
9
5
NA
9
17
<400
<4
6
<400
<2
13
<310
2
2
<310
<2
<2
<290
<2
<2
<290
<3
<2
290
<2
2
NA
4
10
<300
<2
<2
<320
<7
15
<360
<6
6
<370
<3
<4
<360
<4
<3
<360
<4
<4
<360
<6
<4
NA
<6
13
<360
<3
<3
<360
% of
Guide
<23
50
<1
<20
20
<1
<10
<13
<1
<13
<10
<1
<13
<13
<1
<20
<13
-
<20
43
<1
<10
<10
<1
81
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling Map
Location No.
Lida, NV
Lida Livestock 65
Lida, NV
Pond at Storage Tank 66
Lida Jet, NV
Cafe Garage 67
Lund, NV
Gardner Grocery 68
Manhattan, NV
Manhattan Trading Post 69
Manhattan, NV
Seyler Reservoir 70
Mercury , NV
Area 51 71
Moapa, NV
Pederson Valley View 72
Rch.
No. Type of
Sample of Radio-
Type3 Samples activity
24d 12 gross a
gross 8
3H
21 9 gross a
gross 6
3H
23 12 gross a
gross 6
%
23 12 gross a
gross 3
3H
24d 12 gross a
gross 6
3H
21 7 gross a
gross 8
3H
24 12 gross a
gross 6
3H
24 12 gross a
gross B
3H
Radioactivity Cone.
10~9uCi/ml or pCi/1
C C C
max min avg
8
6
NA
7
11
NA
11
17
NA
9
6
NA
24
13
NA
26
73
NA
6
6
NA
8
15
NA
2
<2
NA
<2
<3
NA
<2
3
NA
3
<2
NA
4
<2
NA
4
10
NA
<2
<2
NA
4
7
NA
<4
<4
NA
<4
<6
NA
<5
13
NA
5
<4
NA
<15
<7
NA
17
34
NA
<3
<4
NA
<6
11
NA
% of
Guide
<13
<13
-
<13
<20
-
<17
43
-
<17
<13
-
<50
<23
-
57
113
-
<10
<13
-
<20
37
-
82
-------
Table 6 1971 Sugary of Analytical Results for the Water Surveillance Network
No.
Sampling
Location
Mt. Charleston, NV
Kyle Canyon
Mt. Charleston, NV
Kyle Canyon Pond
Nyala, NV
Sharp's Ranch
Oasis, NV
Chevron Ser. Sta.
Pahrump, NV
Texaco Ser. Sta.
Pioche, NV
County Courthouse
Round Mt . , NV
Mobil Ser. Sta.
«f * •
Map Sample of Radio-
No. Type3 Samples activity
73 24d 12 gross a
gross 3
3H
74 21 8 gross a
gross 3
3H
75 23d 12 gross a
gross 3
3H
76 23 2 gross a
gross 3
3H
77 24d 12 gross a
gross 3
3H
78 24d 12 gross a
gross 3
3H
79 24d 12 gross a
gross 3
3H
10-9pCi/ml or pCi/1
Cmax Cmin Cav0
3
4
<400
3
64
NA
6
14
NA
5
6
NA
5
6
NA
5
14
NA
9
7
NA
<2
<2
<330
<2
8
NA
<2
<2
NA
3
2
NA
<2
<2
NA
<2
<2
NA
<2
<2
NA
, --a
<2
<2
<370
<2
20
NA
<3
<4
NA
4
4
NA
<3
<3
NA
<3
<5
NA
<4
<4
NA
% of
(7n-i A(
\7v J. U\
<7
<7
<1
<7
67
_
<10
<13
13
13
_
<10
<10
_
<10
<17
_
<13
<13
_
Ruby Valley, NV
Fish Hatchery
80
21
gross a
gross 3
NA
NA
NA
83
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling Map
Location No.
Scotty's Jet. , NV
Chevron Ser. Sta. 81
Springdale, NV
Peacock Ranch 82
Springdale, NV
Pond 83
Sunnyside, NV
Adam McGill Reservoir 84
Sunnyside, NV
Wildlife Mgt. Hdqts. 85
Tonopah, NV
David's L & L Motel 86
Tonopah Test Range, NV
CP-1 87
Warm Springs , NV
Fallini's Pond 88
No. Type of
Sample of Radio-
Type3 Samples activity
23d 12 gross a
gross 6
3H
27d 12 gross a
gross 0
3H
21 12 gross a
gross 8
3H
21 12 gross a
gross g
3H
27d 12 gross a
gross B
%
24" 12 gross a
gross 8
3H
24d 12 gross a
gross 6
3H
21 12 gross a
gross 0
3H
Radioactivity Cone.
10-%Ci/ml or pCi/1
Cmax °min Cavg
7
14
<400
7
16
<400
10
25
NA
15
14
NA
6
6
NA
8
13
NA
10
24
NA
32
70
NA
<3
<3
<300
<2
7
<290
4
10
NA
5
5
NA
<2
<2
NA
<3
<2
NA
<2
7
NA
10
5
NA
<5
<11
<370
<4
9
<370
<7
14
NA
8
9
NA
<3
<3
NA
<5
<8
NA
<6
11
NA
<21
33
NA
7, of
Guide
<17
<37
<1
<13
30
<1
<23
47
-
27
30
-
<10
<10
-
<17
<27
-
<20
37
-
<70
110
_
84
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling
Location
Warm Springs, NV
Hot Creek Ranch
Warm Springs, NV
Ser. Sta. & Cafe
Warm Springs , NV
Twin Springs Ranch
Wells, NV
4-Way Truck Stop
Cedar City, UT
M. D. Baldwin Res.
Garrison, UT°
Pruess Reservoir
Garrison, UT
Rowley Grocery
Newcastle, UT
Municipal Reservoir
No. Type of
Map Sample of Radio-
No. Typea Samples activity
89 27d 10 gross a
gross 3
3H
90 27d 10 gross a
gross 3
3H
91 23d 12 gross a
gross 3
3H
92 24d 2 gross a
gross 3
3H
93 24d 12 gross a
gross 3
3H
94 21 3 gross a
gross 3
3H
95 23d 12 gross a
gross 3
3H
96 21 9 gross a
gross 3
3H
Radioactivity Cone.
10-9yCi/ml or PCi/l
Cmax Cmin Cavg
8
18
NA
39
45
NA
14
13
NA
5
8
NA
5
7
NA
29
21
NA
6
5
NA
17
18
NA
3
3
NA
<5
22
NA
<3
7
NA
4
5
NA
<2
<2
NA
13
14
NA
2
<2
NA
3
3
NA
<5
11
NA
<21
28
NA
<8
10
NA
<5
<7
NA
<3
<3
NA
21
17
NA
<4
<4
NA
10
11
NA
% of
Guide
<17
37
-
<10
93
-
<27
33
-
<17
<23
-
<10
<10
-
70
57
-
<13
<13
-
33
37
-
85
-------
Table 6 1971 Summary of Analytical Results for the Water Surveillance Network
Sampling
Location
Newcastle, UT
Newcastle Dairy
St.
R.
George, UT
Cox Dairy
Wendover, UT
State Line Cafe
No. Type of
Map Sample of Radio-
No. Type3 Samples activity
97 24 11 gross a
gross 6
3H
98 24 11 gross a
gross B
3H
99 24 2 gross a
gross 3
3H
Radioactivity Cone.
10-9yCi/ml or pCi/1
Cmax Cmin Cavg
9
13
NA
7
7
NA
<2
<3
NA
<2
<2
NA
<2
<2
NA
<2
<2
NA
<5
<7
NA
<4
<3
NA
<2
<3
NA
% of
Guide
<17
<23
-
<13
<10
-
<7
<10
—
21 = Pond, Lake, Reservoir.
22 = Stream, River.
23 = Well.
24 = Community Supply, i.e., a water supply continuously serving 20 or more people
or 10 or more residences.
27 = Spring.
= Discontinued.
£
= Sampled Quarterly.
= Drinking water.
NA = Not Analyzed.
86
-------
Table 7 Results of Special Water Analyses
Sampling
Locations
Alamo, Nv
Pahrangat Lake
Ely, Nv
Comins Lake
Hawthorne, Nv
Walker Lake
Manhattan, Nv
Seyler Reservoir
Warm Springs, Nv
Falling's Pond
Collection
Data
3/8/67
4/27/67
5/22/67
6/6/67
11/1/67
11/28/67
1/23/68
2/4/68
3/28/68
5/28/68
6/24/68
7/24/68
9/9/68
10/1/68
10/13/67
6/18/69
12/10/70
2/15/72
12/8/70
2/15/68
3/5/68
4/3/68
5/22/68
9/4/68
10/15/68
11/8/68
1/14/69
Radioactivity Concentrations, 10"
4O£ 226^3 jj s9 Sr
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
130
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.2
0.2
0.4
NA
0.1
0.3
0.3
0.2
0.3
0.2
0.2
0.1
0.1
0.1
NA
NA
NA
0.4
NA
1.1
1.7
1.3
1.7
5.1
3.0
1.7
1.4
NA
NA
NA
NA
23a
25a
12a
19a
20a
17a
13a
33a
34a
32a
NA
NA
NA
36(**U)bb
33(238U)b
NA
21S
203
19a
39a
20a
23a
15a
12a
1
2
<5
<5
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<5
<5
<5
<2
<5
NA
NA
NA
NA
NA
NA
NA
NA
90 Sr
0.3
1.3
0.3
0.2
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<0.1
<2
<2
<2
<2
NA
NA
NA
NA
NA
NA
NA
NA
87
-------
Table 7 Results of Special Water Analyses
ND = Not detected.
NA = No analysis.
= Concentration in ng/l determined by fluorometry procedures were con-
verted to jnCi/ml by multiplying by factor of 0.7xlO~9, specific
activity of natural uranium.
= Concentration in /nCi/ml determined by alpha spectroscopy procedure.
88
-------
DISTRIBUTION
1-15 National Environmental Research Center, Las Vegas, Nevada
16 Mahlon E. Gates, Manager, NVOO/AEC, Las Vegas, Nevada
17 Robert H. Thalgott, NVOO/AEC, Las Vegas, Nevada
18 Henry G. Vermillion, NVOO/AEC, Las Vegas, Nevada
19 Chief, NOB/DNA, NVOO/AEC, Las Vegas, Nevada
20 Robert R. Loux, NVOO/AEC, Las Vegas, Nevada
21 Donald W. Hendricks, NVOO/AEC, Las Vegas, Nevada
22 Technical Library, NVOO/AEC, Las Vegas, Nevada
23 Mail & Records, NVOO/AEC, Las Vegas, Nevada
24 Martin B. Biles, DOS, USAEC, Washington, D.C.
25 Director, DMA, USAEC, Washington, D.C.
26 John S. Kelley, DPNE, USAEC, Washington, D.C.
27 Harold F. Mueller, ARL/NOAA, NVOO/AEC, Las Vegas, Nevada
28 Gilbert J. Ferber, ARL/NOAA, Silver Spring, Maryland
29 Stanley M. Greenfield, Assistant Administrator for Research & Monitoring,
EPA, Washington, D.C.
30 William D. Rowe, Deputy Assistant Administrator for Radiation Programs,
EPA, Rockville, Maryland
31 Dr. William A. Mills, Dir., Div. of Criteria & Standards, Office of
Radiation Program, EPA, Rockville, Maryland
32 Ernest D. Harward, Acting Director, Division of Technology Assessment,
Office of Radiation Program, EPA, Rockville, Maryland
33 Bernd Kahn, Chief, Radiochemistry & Nuclear Engineering, NERC, EPA,
Cincinnati, Ohio
34 - 35 Charles L. Weaver, Director, Field Operations Division, Office of
Radiation Programs, EPA, Rockville, Maryland
36 Gordon Everett, Director, Office of Technical Analysis, EPA,
Washington, D.C.
37 Kurt L. Feldmann, Managing Editor, Radiation Data & Reports, ORP, EPA,
Rockville, Maryland
38 Regional Administrator, EPA, Region IX, San Francisco, California
39 Regional Radiation Representative, EPA, Region IX, San Francisco, California
40 Eastern Environmental Radiation Laboratory, EPA, Montgomery, Alabama
-------
DISTRIBUTION (continued)
41 Library, EPA, Washington, D.C.
42 William C. King, LLL, Mercury, Nevada
43 James E. Carothers, LLL, Livermore, California
44 Roger E. Batzel, LLL, Livermore, California
45 William E. Ogle, LASL, Los Alamos, New Mexico
46 Harry S. Jordan, LASL, Los Alamos, New Mexico
47 Arden E. Bicker, REECo, Mercury, Nevada
48 Savino W. Cavender, REECo, Mercury, Nevada
49 Charles F. Bild, Sandia Laboratories, Albuquerque, New Mexico
50 Robert H. Wilson, University of Rochester, Rochester, New York
51 Richard S. Davidson, Battelle Memorial Institute, Columbus, Ohio
52 Frank E. Abbott, USAEC, Golden, Colorado
53 John M. Ward, President, Desert Research Institute, University of
Nevada, Reno
54 - 55 Technical Information Center, Oak Ridge, Tennessee (for public
availability).
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