United States Eastern Environmental EPA 520/5-88-057
Environmental Protection Radiation Facility September 1988
Agency 1890 Federal Drive
Office of Radiation Programs Montgomery, AL 36109
Radiation
Environmental Radiation
Data
Report 53
January - March 1988
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ENVIRONMENTAL
RADIATION
DATA
REPORT 53
January - March 1988
United States Environmental Protection Agency
Office of Radiation Programs
-------
Preface
Environmental Radiation Data (ERD) is compiled and distributed quarterly by the Office of Radiation
Programs' Eastern Environmental Radiation Facility (JSERF) in Montgomery, Alabama, and contains data
from the Environmental Radiation Ambient Monitoring System (ERAMS). Data from similar networks
operated by contributing States, Canada, Mexico, and the Pan American Health Organization are reported
in the ERD when available.
ERAMS was established in 1973 by the U. S. Environmental Protection Agency's Office of Radiation
Programs (ORP). The ERAMS is comprised of nationwide sampling stations that provide air, surface and
drinking water, and milk samples from which environmental radiation levels are derived. The major emphasis
for ERAMS is upon identifying trends in the accumulation of long-lived radionuclides in the environment.
Sampling locations are selected to provide optimal population coverage while functioning to monitor
fallout from nuclear devices and other forms of radioactive contamination of the environment. The radiation
analyses performed on these samples include gross alpha and gross beta levels, gamma analyses for fission
products, and specific analyses for uranium, plutonium, strontium, iodine, radium, krypton, and tritium.
This monitoring effort also provides ancillary information on natural background levels and on routine and
accidental releases into the environment from stationary sources.
The radiochemical procedures used by the EERF to analyze the ERAMS samples are contained in
Eastern Environmental Radiation Facility Radiochemistry Procedures Manual (EPA 520/5-84-006). Station
operation and sample collection are in accordance with procedures contained in the ERAMS Manual (EPA
520/5-84-007, 008, 009).
in
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Environmental Radiation Data
Contents
Page
Data - Reporting Rationale and Procedures ix
Data - ERAMS 1
Section I. Air Program 1
1. Airborne Partic.ulates and Precipitation 1
2. Krypton-85 13
Section II. Water Program 14
1. Surface Water 14
2. Drinking Water 19
Section III. External Gamma Ambient Monitoring Program 25
Section IV. Milk Program 27
1. Pasteurized Milk 27
2. Strontium-90 and Strontium-89 in Milk 34
3. Carbon-14 in Milk 35
-------
Environmental Radiation Data
List of Tables
Table Page
1 ERAMS Reporting Increments and Minimum Detectable Levels xi
2 Gross Beta Concentrations in Airborne Participates: January 1088 2
3 Gross Beta Concentrations in Airborne Participates: February 1988 4
4 Gross Beta Concentrations in Airborne Participates: March 1988 6
5 Gross Beta Concentrations in Precipitation: January 1988 8
6 Gross Beta Concentrations in Precipitation: February 1988 9
7 Gross Beta Concentrations in Precipitation: March 1988 10
8 Tritium Concentrations in Precipitation: January - March 1988 11
9 Surface Water Tritium Concentrations: January March 1988 15
10 Surface Water Annual Gamma Analysis: January December 1987 17
11 Drinking Water Tritium Concentrations: January - March 1988 20
12 Iodine-131 in Drinking Water Concentrations: January - December 1987 22
13 Environmental Gamma Ambient Monitoring Program: January March 1988 26
14 Concentrations of Radionuclides in Pasteurized Milk: January 1988 28
15 Concentrations of Radionuclides in Pasteurized Milk: February 1988 30
16 Concentrations of Radionuclides in Pasteurized Milk: March 1988 32
17 Strontium-90 and Strontium-89 in Pasteurized Milk: EPA Regional Composites 34
VII
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DATA Reporting Rationale and Procedures
In 1973, the U.S. Environmental Protection Agency's Office of Radiation Programs established the
Environmental Radiation Ambient Monitoring System (ERAMS) to provide continuous, accurate, and usable
environmental radiation data to the public. For completeness, ERAMS data for all specific radionuclide
analyses are reported as the calculated results indicate, whether the numbers are negative, zero, or positive.
Reporting Rationale
Frequently, there is little or no radioactivity in environmental media. Thus, the results of laboratory
analyses should statistically show a distribution of negative and positive numbers about zero. A negative
value occurs when a previously determined background value is subtracted from a sample value that is
less than that of the background. Prior to July 1975, ERAMS data were not reported numerically when
the results were less than a specified reporting level or minimum detectable level. The present reporting
procedure allows all the data to be reported and evaluated statistically without an arbitrary cutoff of small
or negative numbers. This approach will facilitate estimates of bias in the nuclide analyses and will allow
better evaluation of distributions and trends in environmental data.
When reviewing the data in this report, caution should be exercised in the interpretation of individual
negative values. Obviously, a negative activity value has no physical significance. Such numbers, however,
are significant when taken together with other observations that indicate that the true value of a distribution
is near zero. When an average of many measurements produces a result significantly less than zero, this
indicates a bias in the measurement procedure.
(1) Reported Values
Specific Analyses. All specific radionuclide analyses will be reported as the counting results indicate,
whether the value is negative, zero, or positive. All reported values are corrected for radioactive decay
to the collection date.
Gross Analyses. The actual value of gross radioac.tivity measurements will be reported, unless
the value is below the minimum detectable level (MDL) at the Icr confidence level, then < minimum
detectable level will be reported.
MDL is defined as the 3
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Table 1
ERAMS Reporting Increments and Minimum Detectable Levels
for Radionuclide Analyses
Radionuclide
Gross Alpha
f Gioss Beta
Tritium
Carbon- 14
Krypton-85
ft Plutonium-238,239,240
t Uranium-234,235,238
Radinm-226
Stron tiuiu-90
ft Strontium-89
ft Iodine-131
Iodine-129
Cesium-137
ft Barium-140
Potassium
Potassium-40
Media
Water
Air
Water
Precipitation
Water
Milk
Milk
Ambient Air
Air
Milk
Water
Air
Milk
Water
Water
Milk
Water
Milk
Milk
Water
Water
Reporting
Units
pCi/1
pCi/m3
PCi/l
nCi/m2
nCi/1
nCi/1
PCi/l
pCi/m3
aCi/m3
pCi/1
pCi/1
aCi/m3
PCi/l
pCi/1
pCi/1
pCi/1
PCi/1
PCi/l
pCi/1
pa/i
pa/i
Reporting
Increments
1 pG'i/1
O.OJ pa/iii3
1 pCi/1
0.01 na/in2
0.1 na/1
0.1 na/1
1 pCi/1
0.1 pa/m3
0.1 aa/m3
0.001 pCi/1
o.ooi pa/i
0.1 aa/m3
o.ooi pa/i
o.ooi pa/i
o.i pa/i
o.i pa/i
0.1 pCi/1
1 pCi/1
i pa/i
1 PCi/l
o.i Pa/i
Mininiiim
Detectable
Levels
2 pC'i/1
0.01 pa/m3
1 pCi/1
0.01 nC!i/m2
0.2 na/1
0.2 na/1
15 pa/i
2 pa/m3
0.015 pCi
o.oi5 pa
0.015 pa
0.015 pa
o.oi5 pa
0.015 pa
o.i pa/i
1 pCi/1
i pa/i
5 pCi/1
10 pCi/1
10 pa/i
0.4 pa/i
(specific radiochemical analysis)
Milk
Milk
Water
Milk
Water
Milk
Water
Water
fa/i
pa/i
pCi/1
P«/l
PCi/l
g/i
g/i
Pa/i
o.i ra/i
1 pCi/1
1 pCi/1
1 pCi/1
1 pCi/1
0.1 g/l
0.1 g/l
1 pCi/1
0.4 fa/i
10 pa/i
10 pCi/1
10 Pa/i
10 pCi/1
0.12 g/l
0.12 g/l
100 Pa/i
f The value of MDL for precipitation in terms of nC!i/m would be dependent on precipitation (mm).
ft This value of MDL for air in terms of pCi/m would be dependent on the air volume. Measurement by alpha spectroscopy
that includes contributions of plutonium-239 and plutonium-240. MDL for all media given per sample.
J This value of MDL for air in terms of pCi/m would be dependent on the air volume. MDL for all media given per sample.
J J Activity as of the day of counting.
XI
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DATA EPA
ENVIRONMENTAL RADIATION
AMBIENT MONITORING SYSTEM (ERAMS)
Section I. Air Program
Airborne Particulates and Precipitation
Gross beta radioactivity measurements and certain specific analyses are performed on air participates
and precipitation samples as indicator measurements in assessing the general (national) impact of all con-
tributing sources on environmental levels of radiation.
Airborne participates are collected continuously at field stations representing wide geographic coverage,
including present and potential sources of environmental radioactivity. Sampling sites are located throughout
the United States.
Fillers (10-cni diameter synthetic, fiber) from air samplers are changed twice weekly and field measure-
ments are made with a G-M survey meter ' at 5 hours and 29 hours after collection to allow for radon and
thoron daughter product decay. Field estimates are reported to appropriate EPA officials by telephone or
mail depending on the activity levels found.
The filters are sent to EERF for more sensitive analyses in a low background beta counter. Gamma
scans are performed on all filters showing gross beta counts greater than 1 pCi/iu3. The laboratory obtained
values are usually lower than the field estimates due to the decay of naturally occurring radionuclides between
the times of the two measurements.
Precipitation samples are collected at those field stations collecting air filters. These samples are also
sent to EERF where they are composited monthly for gamma scans, tritium, and gross beta activity mea-
surements. A composite of the March, April, and May precipitation samples is analyzed for plutonium-238,
-239, -240, and uranium-234, -235, and -238.
A compilation of individual measurements is available from the Eastern Environmental Radiation Fa-
cility, 1890 Congressman W.L. Dickinson Drive, Montgomery, AL 36109.
Tables 2-4 contain the data in airborne particulate samples for January - March 1988.
Tables 5-7 contain the data in precipitation sample for January - March 1988.
Table 8 contains the data for tritium in precipitation samples for January - March 1988 at the selected
sites.
' The counts at five hours for the Montgomery, Alabama, station are performed on a low background beta counter.
1
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Table 2
Airborne Particulates
Gross Beta Concentrations
January 1988
Location
AL: MONTGOMERY
AR: LITTLE ROCK
CA: BERKELEY
CA:LOS ANGELES
CO: DENVER
CT : HARTFORD
DE:WILMINGTON
FL: JACKSONVILLE
FL: MIAMI
GA: ATLANTA
HI: HONOLULU
IA:IOWA CITY
ID:BOISE
ID: IDAHO FALLS
IL: CHICAGO
IN: INDIANAPOLIS
KS:TOPEKA
KY: FRANKFORT
LA: NEW ORLEANS
MA: LAWRENCE
ME: AUGUSTA
MI:LANSING
MN:MINNEAPOLIS
MO: JEFFERSON CITY
MS: JACKSON
NC : CHARLOTTE
NC: WILMINGTON
ND:BISMARCK
NE:LINCOLN
NH: CONCORD
NJ:TRENTON
NM: SANTA FE
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY: SYRACUSE
# Sam
8
8
8
8
7
8
8
8
8
4
8
8
8
8
8
2
7
2
3
6
7
8
7
9
7
7
7
8
8
8
8
8
8
3
8
8
2
5— Hr Field
Estimate
Max Min Ave
(pCi/m3)
1.5 0.1 0.8
0.2 0.0 0.1
0.0 0.0 0.0
0.2 0.1 0.1
0.2 0.1 0.1
0.1 0.0 0.1
0.1 0.0 0.0
0.2 0.0 0.1
0.1 0.0 0.0
0.3 0.1 0.2
0.4 0.1 0.2
0.1 0.0 0.1
0.6 0.0 0.1
0.0 0.0 0.0
0.2 0.1 0.1
0.1 0.0 0.1
0.5 0.2 0.3
0.1 0.1 0.1
0.0 0.0 0.0
0.1 0.0 0.1
0.1 0.0 0.1
0.1 0.0 0.1
0.3 0.1 0.2
1.1 0.1 0.3
0.2 0.0 0.1
0.2 0.0 0.1
0.0 0.0 0.0
0.9 0.2 0.5
0.7 0.1 0.4
0.0 0.0 0.0
0.1 0.0 0.1
0.2 0.1 0.1
0.4 0.0 0.2
0.1 0.0 0.0
0.2 0.0 0.1
0.1 0.0 0.1
0.1 0.0 0.1
EERF Lab
Measurment
Max Min Ave
(pCi/m3)
0.03 0.01 0.02
0.03 0.01 0.01
0.02 0.00 0.01
0.02 0.01 0.01
0.03 0.00 0.01
0.04 0.00 0.01
0.03 0.01 0.01
0.04 0.01 0.01
0.03 0.00 0.01
0.02 0.00 0.01
0.01 0.00 0.00
0.02 0.01 0.02
0.03 0.00 0.01
0.03 0.00 0.02
0.02 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.01
0.01 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.03 0.01 0.01
0.02 0.01 0.01
0.03 0.01 0.02
0.02 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.01
0.03 0.00 0.01
0.03 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.01
0.04 0.01 0.02
0.01 0.00 0.01
0.04 0.01 0.02
0.05 0.02 0.03
0.03 0.01 0.02
0.02 0.01 0.01
0.01 0.01 0.01
-------
Table 2 (continued)
Airborne Participates
Gross Beta Concentrations
January 1988
Location
NY:YAPHANK
OH : COLUMBUS
OH:PAINESVILLE
OH: TOLEDO
OK: OKLAHOMA CITY
OR: PORTLAND
PA:GOLDSBORO
PA:HARRISBURG
PA PHILADELPHIA
PA: PITTSBURGH
PA: THREE MILE ISLAND
RI: PROVIDENCE
SC ^ARNWELL
SC: COLUMBIA
SD: PIERRE
TN:KNOXVILLE
TX: AUSTIN
TX:EL PASO
VA:LYNCHBURG
WA:OLYMPIA
WA: SPOKANE
WI: MADISON
WV : CHARLESTON
# Sam
8
6
8
8
7
8
8
8
8
8
8
7
2
7
7
7
3
8
8
8
8
8
7
5— Hr Field
Estimate
Max Min Ave
(pCi/m3)
0.1 0.0 0.1
0.2 0.1 0.1
0.1 0.0 0.1
0.2 0.1 0.1
0.4 0.0 0.1
0.0 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.1
0.3 0.0 0.1
0.1 0.1 0.1
0.3 0.0 0.1
0.1 0.0 0.1
0.0 0.0 0.0
0.5 0.0 0.2
0.3 0.0 0.2
0.3 0.0 0.1
0.1 0.0 0.1
1.2 0.3 0.6
0.3 0.0 0.2
0.4 0.0 0.1
0.1 0.0 0.0
0.3 0.0 0.1
0.2 0.0 0.1
EERF Lab
Measurment
Max Min Ave
(pCi/m3)
0.02 0.01 0.01
0.03 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.02
0.03 0.01 0.02
0.06 0.00 0.02
0.03 0.01 0.01
0.03 0.01 0.01
0.03 0.01 0.02
0.02 0.01 0.01
0.04 0.01 0.02
0.03 0.01 0.01
0.01 0.01 0.01
0.02 0.01 0.02
0.03 0.01 0.02
0.03 0.01 0.02
0.02 0.01 0.02
0.04 0.01 0.02
0.02 0.01 0.01
0.03 0.00 0.01
0.04 0.00 0.02
0.02 0.01 0.01
0.02 0.01 0.01
Minimum Detectable Limit
Minimum Detectable Limit
for field estimates - 0.1 pCi/m8.
for laboratory measurement - 0.01 pCi/i
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Table 3
Airborne Particulates
Gross Beta Concentrations
February 1988
Location
AL: MONTGOMERY
AR: LITTLE ROCK
CA: BERKELEY
CA:LOS ANGELES
CO: DENVER
CT : HARTFORD
DE: WILMINGTON
FL: JACKSONVILLE
FL:MIAMI
GA: ATLANTA
HI: HONOLULU
IA:IOWA CITY
ID:BOISE
ID: IDAHO FALLS
IL: CHICAGO
IN: INDIANAPOLIS
KS:TOPEKA
KY: FRANKFORT
LA: NEW ORLEANS
MA: LAURENCE
ME: AUGUSTA
MI: LANSING
MN: MINNEAPOLIS
MO: JEFFERSON CITY
MS: JACKSON
NC: CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
NE: LINCOLN
NH: CONCORD
NJ:TRENTON
NM: SANTA FE
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY -NIAGARA FALLS
NY: SYRACUSE
# Sam
8
9
8
8
9
9
8
9
9
5
9
9
9
9
9
8
8
2
4
8
7
9
8
8
8
8
9
8
9
8
9
9
6
4
7
8
4
5— Hr Field
Estimate
Max Min Ave
(pCi/m3)
0.9 0.0 0.3
0.4 0.1 0.2
0.0 0.0 0.0
0.9 0.0 0.2
0.4 0.1 0.2
0.1 0.0 0.0
0.1 0.0 0.0
0.2 0.0 0.1
0.1 0.0 0.0
0.5 0.1 0.3
0.3 0.1 0.2
0.1 0.0 0.0
0.9 0.0 0.3
0.0 0.0 0.0
0.1 0.0 0.1
0.2 0.0 0.1
0.8 0.1 0.4
0.1 0.1 0.1
0.0 0.0 0.0
0.1 0.0 0.1
0.1 0.0 0.1
0.1 0.0 0.0
0.2 0.0 0.1
0.3 0.0 0.1
0.2 0.0 0.1
0.3 0.0 0.1
0.0 0.0 0.0
0.3 0.1 0.2
1.6 0.1 0.6
0.0 0.0 0.0
0.2 0.0 0.1
0.3 0.1 0.2
0.3 0.1 0.2
0.0 0.0 0.0
0.2 0.1 0.1
0.1 0.0 0.1
0.0 0.0 0.0
EERF Lab
Measurment
Max Min Ave
(pCi/m3)
0.02 0.01 0.01
0.02 0.01 0.01
0.02 0.00 0.01
0.01 0.01 0.01
0.02 0.00 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.02 0.00 0.01
0.02 0.00 0.01
0.02 0.01 0.01
0.01 0.00 0.00
0.02 0.01 0.01
0.04 0.00 0.02
0.02 0.00 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.02
0.01 0.01 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.02
0.02 0.01 0.01
0.01 0.00 0.01
0.02 0.00 0.02
0.02 0.00 0.01
0.01 0.01 0.01
0.02 0.01 0.01
0.01 0.00 0.01
0.02 0.01 0.02
0.02 0.00 0.01
0.03 0.01 0.02
0.02 0.01 0.01
0.01 0.01 0.01
-------
Table 3 (continued)
Airborne Particulates
Gross Beta Concentrations
February 1988
Location
NY:YAPHANK
OH : COLUMBUS
OH:PAINESVILLE
OH : TOLEDO
OK: OKLAHOMA CITY
OR: PORTLAND
PA:GOLDSBORO
PArHARRISBURG
PA: PHILADELPHIA
PA PITTSBURGH
PA: THREE MILE ISLAND
RI: PROVIDENCE
SC:BARNWELL
SC: COLUMBIA
SD : PIERRE
TN:KNOXVILLE
TX: AUSTIN
TX:EL PASO
VA:LYNCHBURG
WA:OLYMPIA
WA: SPOKANE
WI: MADISON
WV: CHARLESTON
# Sam
6
8
8
9
6
8
9
9
8
9
9
8
1
7
7
8
8
9
9
9
9
9
9
5~Hr Field
Estimate
Max Min Ave
(pCi/m3)
0.1 0.0 0.1
0.1 0.0 0.1
0.1 0.0 0.1
0.1 0.0 0.0
0.6 0.1 0.4
0.0 0.0 0.0
0.7 0.0 0.2
0.1 0.0 0.1
0.8 0.1 0.3
0.0 0.0 0.0
0.4 0.0 0.1
0.2 0.0 0.1
0.0 0.0 0.0
0.3 0.1 0.2
0.4 0.1 0.2
0.6 0.0 0.1
0.4 0.1 0.2
1.5 0.3 0.7
0.5 0.1 0.3
0.3 0.0 0.1
0.3 0.0 0.1
0.1 0.0 0.1
0.2 0.0 0.1
EERF Lab
Measurment
Max Min Ave
(PCi/m3)
0.01 0.01 0.01
0.02 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.02
0.02 0.00 0.01
0.02 0.00 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.01 0.01 0.01
0.04 0.00 0.02
0.03 0.01 0.02
0.02 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.02
0.01 0.00 0.01
0.02 0.00 0.01
0.03 0.00 0.01
0.02 0.01 0.01
0.02 0.01 0.01
Minimum Detectable Limit, for field estimates - 0.1 pCi/ni8.
Miiiimiim Detectable Limit for laboratory measurement - 0.01 pCi/m3.
-------
Table 4
Airborne Particulates
Gross Beta Concentrations
March 1988
Location
AL: MONTGOMERY
AR: LITTLE ROCK
CA: BERKELEY
CA:LOS ANGELES
CO: DENVER
CT : HARTFORD
DE: WILMINGTON
FL: JACKSONVILLE
FL: MIAMI
GA: ATLANTA
HI: HONOLULU
IA:IOWA CITY
ID:BOISE
ID: IDAHO FALLS
IL: CHICAGO
IN: INDIANAPOLIS
KS:TOPEKA
KY: FRANKFORT
LA: NEW ORLEANS
MA: LAWRENCE
ME: AUGUSTA
MI:LANSING
MN:MINNEAPOLIS
MO: JEFFERSON CITY
MS: JACKSON
NC: CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
NE: LINCOLN
NH: CONCORD
NJ:TRENTON
NM: SANTA FE
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY: SYRACUSE
# Sam
9
8
9
9
9
8
10
7
8
4
8
9
7
8
8
10
8
5
3
9
8
9
9
9
9
8
9
8
9
9
9
8
9
4
9
10
4
5— Hr Field
Estimate
Max Min Ave
(pCi/m3)
0.9 0.1 0.4
0.4 0.1 0.2
0.0 0.0 0.0
0.4 0.0 0.2
0.7 0.2 0.4
0.1 0.0 0.0
0.2 0.1 0.1
0.2 0.0 0.1
0.1 0.0 0.0
0.5 0.0 0.3
0.2 0.1 0.2
0.5 0.1 0.2
0.3 0.1 0.2
0.0 0.0 0.0
0.5 0.0 0.2
0.4 0.1 0.2
1.3 0.3 1.0
0.4 0.1 0.2
0.0 0.0 0.0
0.2 0.0 0.1
0.1 0.0 0.1
0.4 0.0 0.1
0.4 0.0 0.2
0.7 0.2 0.3
0.2 0.0 0.1
0.4 0.0 0.1
0.1 0.1 0.1
0.6 0.2 0.4
3.0 0.6 1.4
0.1 0.0 0.0
0.3 0.1 0.2
0.6 0.2 0.3
0.2 0.1 0.2
0.0 0.0 0.0
0.3 0.1 0.1
0.2 0.0 0.1
0.1 0.0 0.0
EERF Lab
Measurment
Max Min Ave
(pCi/m3)
0.08 0.01 0.02
0.01 0.01 0.01
0.01 0.00 0.01
0.03 0.00 0.01
0.01 0.01 0.01
0.01 0.00 0.01
0.01 0.00 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.01 0.00 0.00
0.01 0.01 0.01
0.02 0.00 0.01
0.01 0.00 0.01
0.02 0.01 0.01
0.02 0.00 0.01
0.02 0.01 0.01
0.01 0.00 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.01 0.00 0.01
0.01 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.03 0.01 0.01
0.03 0.00 0.02
0.01 0.01 0.01
0.01 0.01 0.01
0.05 0.01 0.02
0.01 0.00 0.01
0.01 0.00 0.01
0.01 0.01 0.01
0.06 0.00 0.02
0.01 0.01 0.01
0.02 0.01 0.01
0.01 0.01 0.01
0.01 0.01 0.01
-------
Table 4 (continued)
Airborne Particulates
Gross Beta Concentrations
March 1988
Location
NY:YAPHANK
OH: COLUMBUS
OH:PAINESVILLE
OH: TOLEDO
OK: OKLAHOMA CITY
OR: PORTLAND
PA:GOLDSBORO
PA:HARRISBURG
PA PHILADELPHIA
PA: PITTSBURGH
PA: THREE MILE ISLAND
RI: PROVIDENCE
SC:BARNWELL
SC: COLUMBIA
SD: PIERRE
TN:KNOXVILLE
TN: NASHVILLE
TX: AUSTIN
TX:EL PASO
VA:LYNCHBURG
WA:OLYMPIA
WA: SPOKANE
WI: MADISON
WV: CHARLESTON
# Sam
9
6
9
9
7
9
9
9
8
9
8
7
2
10
9
8
10
6
9
9
8
9
9
9
5— Hr Field
Estimate
Max Min Ave
(pCi/m3)
0.3 0.1 0.1
0.2 0.1 0.1
0.2 0.0 0.1
0.3 0.0 0.1
0.6 0.1 0.4
0.0 0.0 0.0
0.9 0.0 0.3
0.3 0.0 0.1
0.1 0.0 0.1
0.1 0.1 0.1
0.7 0.0 0.3
0.4 0.0 0.2
0.0 0.0 0.0
0.6 0.1 0.3
0.8 0.2 0.4
0.7 0.1 0.4
0.4 0.1 0.2
0.3 0.1 0.2
0.9 0.3 0.6
0.9 0.1 0.4
0.3 0.0 0.1
0.3 0.1 0.2
0.4 0.1 0.2
0.3 0.1 0.2
EERF Lab
Measurment
Max Min Ave
(pCi/m3)
0.01 0.00 0.01
0.02 0.00 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.02 0.00 0.01
0.02 0.00 0.01
0.01 0.00 0.01
0.02 0.01 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.01 0.01 0.01
0.04 0.01 0.02
0.02 0.01 0.01
0.03 0.01 0.02
0.01 0.00 0.01
0.01 0.01 0.01
0.02 0.01 0.02
0.01 0.01 0.01
0.01 0.00 0.00
0.02 0.00 0.01
0.02 0.01 0.01
0.01 0.01 0.01
for field estimates - 0.1 pCi/m3.
for laboratory measurement - 0.01
Minimum Detectable Limit
Minimum Detectable Limit
PCi/m3
-------
Table 5
Gross Beta Concentrations
in Precipitation
January 1988
Location
AL : MONTGOMERY
AR: LITTLE ROCK
CA: BERKELEY
CO: DENVER
CT : HARTFORD
FL: JACKSONVILLE
FL:MIAMI
ID: BOISE
IL: CHICAGO
LA: NEW ORLEANS
MA : LAWRENCE
MN: MINNEAPOLIS
MO: JEFFERSON CITY
NC : CHARLOTTE
NC: WILMINGTON
NJ:TRENTON
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
OH:PAINESVILLE
OR: PORTLAND
PA:HARRISBURG
PA:MIDDLETOWN
PA PHILADELPHIA
SC:BARNWELL
SC: COLUMBIA
TN:KNOXVILLE
VA:LYNCHBURG
WA:OLYMPIA
WI: MADISON
Depth
(mm)
132.8
42.0
112.2
16.8
66.6
135.2
68.0
23.0
36.6
80.0
60.0
7.8
8.0
100.0
142.0
60.8
8.0
21.8
30.8
20.0
13.0
128.4
60.6
9.0
24.0
27.2
95.6
84.0
61.8
159.0
30.8
Act . ±1ff
(nCi/m2)
0.12 0.06
0.09 0.02
0.09 0.05
0.02 0.01
0.23 0.04
0.19 0.08
0.06 0.03
0.03 0.01
0.08 0.02
0.03 0.04
0.07 0.03
0.01 0.00
0.02 0.01
0.23 0.06
0.18 0.07
0.07 0.03
0.01 0.00
0.04 0.01
0.07 0.02
0.05 0.01
0.08 0.01
0.09. 0.06
0.10 0.03
0.01 0.00
0.06 0.01
0.02 0.01
0.11 0.05
0.11 0 . 04
0.09 0.03
0.01 0.06
0.02 0.01
Specific
Gamma
Activity
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NA
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ff = Sigma Counting Error.
NA = Not Analyzed.
ND = No Gamma Activity Detectable.
-------
Table 6
Gross Beta Concentrations
in Precipitation
February 1988
Location
AL: MONTGOMERY
AR: LITTLE ROCK
CO: DENVER
CT : HARTFORD
FL: JACKSONVILLE
FL: MIAMI
ID: BOISE
ID: IDAHO FALLS
IL: CHICAGO
LA: NEW ORLEANS
MA: LAURENCE
MN: MINNEAPOLIS
MO: JEFFERSON CITY
NC : CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
NJ:TRENTON
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY:YAPHANK
OH:PAINESVILLE
OR: PORTLAND
PA:HARRISBURG
PA PHILADELPHIA
RI: PROVIDENCE
SC:BARNWELL
SC: COLUMBIA
TN:KNOXVILLE
TX:EL PASO
VA:LYNCHBURG
WA:OLYMPIA
WI: MADISON
WV: CHARLESTON
Depth
(mm)
112.0
84.0
8.8
57.0
80.0
8.6
20.0
7.0
29.8
44.0
40.0
3.2
24.0
44.0
59.0
6.8
82.0
8,4
43.4
16.0
70.0
84.0
55.0
27.4
87.4
119.0
9.0
24.8
54.2
42.0
9.0
55.4
77.4
14.0
51.2
Act. ±2(7
(nCi/m2)
0.18 0.06
0.59 0.07
0.06 0.01
0.16 0.03
0.11 0.04
0.01 0.00
0.03 0.01
0.00 0.00
0.05 0.02
0.01 0.02
0.11 0.02
0.02 0.00
0.08 0.02
0.25 0.03
0.11 0.03
0.03 0.01
0.38 0.06
0.01 0.00
0.10 0.02
0.03 0.01
0.18 0.04
0.19 0.05
0.27 0.04
0.06 0.02
0.13 0.04
0.17 0.06
0.02 0.01
0.02 0.01
0.06 0.03
0.01 0.02
0.02 0.01
0.09 0.03
0.09 0.04
0.01 0.01
0.22 0.04
Specific
Gamma
Activity
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
-------
Table 7
Gross Beta Concentrations
in Precipitation
March 1988
Location
AL: MONTGOMERY
AR: LITTLE ROCK
CA: BERKELEY
CO: DENVER
CT: HARTFORD
FL: JACKSONVILLE
FL: MIAMI
ID: BOISE
ID: IDAHO FALLS
IL: CHICAGO
LA: NEW ORLEANS
MI:LANSING
MN: MINNEAPOLIS
MO: JEFFERSON CITY
NC: CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
NJ:TRENTON
NY: ALBANY
NY: HEW YORK CITY
NY: NIAGARA FALLS
NY:YAPHANK
OH:PAINESVILLE
OH: TOLEDO
OR: PORTLAND
PA:HARRISBURG
PA:MIDDLETOWN
PA PHILADELPHIA
RI: PROVIDENCE
SC: COLUMBIA
TN:KNOXVILLE
TN:MASHVILLE
VA:LYNCHBURG
WA:OLYMPIA
WI:MADISON
WV: CHARLESTON
Depth
(mm)
78.2
74.0
13.4
6.0
24.8
86.4
28.0
40.0
2.0
25.6
40.0
23.6
21.4
85.0
87.0
75.0
7.0
41.4
6.0
28.6
54.0
82.0
52.0
20.0
80.6
49.2
42.0
37.0
16.0
47.0
69.0
56.6
7.4
180.2
8.0
79.4
Act. ±2(7
(nCi/m2)
0.10 0.04
0.06 0.03
0.02 0.01
0.01 0.00
0.07 0.01
0.03 0.03
0.07 0.02
0.03 0.02
0.01 0.00
0.02 0.01
0.02 0.02
0.01 0.01
0.04 0.01
0.05 0.04
0.14 0.05
0.04 0.03
0.01 0.00
0.04 0.02
0.01 0.00
0.05 0.01
0.04 0.02
0.34 0.06
0.06 0.02
0.05 0.01
0.06 0.04
0.03 0.02
0.02 0.02
0.03 0.02
0.03 0.01
0.11 0.03
0.04 0.03
0.05 0.02
0.01 0.00
0.06 0.07
0.01 0.00
0.04 0.03
Specific
Gamma
Activity
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
cr = Sigma Counting Error.
NA = Not Analyzed.
ND = No Gamma Activity Detectable.
10
-------
Table 8
Precipitation
Tritium Concentrations
January - March 1988
Location
AL: MONTGOMERY
AR: LITTLE ROCK
CA: BERKELEY
CO: DENVER
CT : HARTFORD
FL: JACKSONVILLE
FL: MIAMI
ID: BOISE
ID: IDAHO FALLS
IL: CHICAGO
LA: NEW ORLEANS
MA: LAWRENCE
MI: LANSING
MN: MINNEAPOLIS
MO: JEFFERSON CITY
NC: CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
MJ:TRENTON
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY:YAPHANK
OH:PAINESVILLE
OH: TOLEDO
OR: PORTLAND
PA:HARRISBURG
PA:MIDDLETOWN
PA: PHILADELPHIA
RI: PROVIDENCE
SC:BARNWELL
SC: COLUMBIA
TN:KNOXVILLE
TN: NASHVILLE
TX:EL PASO
VA:LYNCHBURG
January 1988
nCi/1 ±2
-------
Table 8 (continued)
Precipitation
Tritium Concentrations
January - March 1988
Location
WA:OLYMPIA
WI: MADISON
WV: CHARLESTON
January 1988
nCi/1 ±2cT
0.4 0.2
0.1 0.2
NS
February 1988
nCi/1 ±2(7
0.3 0.2
0.2 0.2
0.3 0.2
March 1988
nCi/1 ±2<7
0.1 0.2
0.2 0.2
0.1 0.2
<7 — Sigma Counting Error.
NS = No Sample.
12
-------
Krypton-85
Krypton-85 is a long-lived noble gas with a half-life of 10.8 years. It is released into the atmosphere
by nuclear reactor operations, fuel reprocessing, weapons tests, and research and defense related activities.
Krypton-85 also occurs naturally in minor quantities primarily from the neutron capture of stable krypton-
84 as well as spontaneous fission and neutron-induced fission of uranium. Krypton-85 in the atmosphere
has been monitored to identify and establish baseline levels and long-term trends.
Krypton-85 analysis began in January 1973 with sample collections and analyses being performed for 12
sampling locations. These locations were selected to provide atmospheric coverage of the United States with
considerations being given to the proximity to fuel reprocessing plants, nuclear reactors, and wide geographic
coverage.
Dry compressed air samples, collected at each location, are purchased from commercial air suppliers and
shipped to the EERF where the krypton-85 is cryogenically separated and counted in a liquid scintillation
system.
The last Kr-85 results were for 1976, 1977, and 1979. They were published in Environmental Radiation
Data: Report 30.
13
-------
DATA EPA
ENVIRONMENTAL RADIATION
AMBIENT MONITORING SYSTEM (ERAMS)
Section II. Water Program
The ERAMS water program provides data on ambient radiation levels in the nation's rivers, streams,
and drinking water supplies.
Surface Water
Quarterly grab samples are taken downstream from operating or future nuclear facilities at 58 stations.
Surface water samples are analyzed for tritium quarterly and specific gamma activity annually. Tritium
is a primary radioactive pollutant from nuclear power plants and weapons production activities.
Tritium concentrations are determined by liquid scintillation counting of distilled samples. Gain in a
scans are performed annually to determine levels of gamma emitting radionuclides.
Table 9 contains the data for tritium concentrations for January - March 1988.
Table 10 contains the surface water annual gamma results for January - December 1987.
14
-------
Table 9
Surface Water
Tritium Concentrations
January - March 1988
Location
AL:DECATUR
AL: GORDON
AL:SCOTTSBORO
AR: LITTLE ROCK
CA: DIABLO CANYON
CA : EUREKA
CO : PLATTEVILLE
CT:EAST HADDAM
CT : WATERFORD
FL: CRYSTAL RIVER
FL:FT. PIERCE
FL : HOMESTEAD
IA: CEDAR RAPIDS
ID: BUHL
IL:E. MOLINE
IL: MORRIS
IL:ZION
LA: NEW ORLEANS
MA: PLYMOUTH
MD:CONOWINGO
MD:LUSBY
ME:WISCASSET
MI:CHARLEVOIX
MI: MONROE
MN:MONTICELLO
MN:RED WING
MS: PORT GIBSON
NC : CHARLOTTE
NC:SOUTHPORT
NE:RULO
NJ:BAYSIDE
NJ:OYSTER CREEK
NV: BOULDER CITY
NY: CHELSEA
NY:OSWEGO
OH: TOLEDO
OR:BRADWOOD
Source
TENNESSEE RIVER
CHATTAHOOCHEE RIVER
TENNESSEE RIVER
ARKANSAS RIVER
PACIFIC OCEAN
HUMBOLDT BAY
SOUTH PLATTE RIVER
CONNECTICUT RIVER
LONG ISLAND SOUND
GULF OF MEXICO
ATLANTIC OCEAN
BISCAYNE BAY
CEDAR RIVER
SNAKE RIVER
MISSISSIPPI RIVER
ILLINOIS RIVER
LAKE MICHIGAN
MISSISSIPPI RIVER
CAPE COD BAY
SUSQUEHANNA RIVER
CHESAPEAKE BAY
MONTSEWAY BAY
LAKE MICHIGAN
LAKE ERIE
MISSISSIPPI RIVER
MISSISSIPPI RIVER
MISSISSIPPI RIVER
CATAWBA RIVER
ATLANTIC OCEAN
MISSOURI RIVER
DELAWARE RIVER
OYSTER CREEK
COLORADO RIVER
HUDSON RIVER
LAKE ONTARIO
LAKE ERIE
COLUMBIA RIVER
Date
Collected
12/29/87
01/22/88
12/30/87
01/19/88
12/23/87
01/07/88
01/04/88
01/21/88
01/22/88
01/04/88
01/05/88
03/07/88
01/12/88
02/17/88
02/15/88
03/07/88
02/15/88
01/05/88
01/06/88
01/12/88
01/05/88
01/05/88
01/16/88
01/17/88
02/22/88
01/13/88
01/14/88
01/06/88
01/15/88
01/05/88
02/02/88
01/21/88
02/03/88
01/05/88
02/18/88
01/01/88
01/26/88
nCi/1 ±'2ff
0.3 0.2
0.2 0.2
0.1 0.2
0.1 0.2
0.2 0.2
0.1 0.2
0.3 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.3 0.2
0.2 0.2
0.3 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.3 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.1 0.2
0.4 0.2
0.1 0.2
0.2 0.2
0.4 0.2
0.3 0.2
0.5 0.2
0.2 0.2
0.2 0.2
0.3 0.2
0.1 0.2
0.1 0.2
0.3 0.2
0.5 0.2
0.2 0.2
0.1 0.2
15
-------
Table 9 (continued)
Surface Water
Tritium Concentrations
January March 1988
Location
PA:DANVILLE
SC:ALLENDALE
SC: BROAD RIVER
SC:HARTSVILLE
TN:DAISY
TN:KINGSTON
TN:OAK RIDGE
TX:EL PASO
TX:MATAGORDA
VA:DOSWELL
VA: NEWPORT NEWS
WArNORTHPORT
WA:RICHLAND
WI:TWO CREEKS
WI: VICTORY
WV: WHEELING
Source
SUSQUEHAHNA RIVER
SAVANNAH RIVER
BROAD RIVER
LAKE ROBINSON
TENNESSEE RIVER
CLINCH RIVER
CLINCH RIVER
RIO GRANDE
COLORADO RIVER
NORTH AMNA RIVER
JAMES RIVER
COLUMBIA RIVER
COLUMBIA RIVER
LAKE MICHIGAN
MISSISSIPPI RIVER
OHIO RIVER
Date
Collected
02/03/88
01/29/88
01/21/88
01/05/88
01/19/88
01/18/88
02/15/88
01/04/88
01/12/88
01/07/88
01/26/88
01/13/88
01/05/88
01/11/88
02/02/88
02/29/88
nCi/1 ±'2
-------
Table 10
Surface Water
Annual Gamma Analysis
January - December 1987
Location
AL:DECATUR
AL:GORDAN
ALrSCOTTSBORO
AR: LITTLE ROCK
CA: DIABLO CANYON
CA: EUREKA
CA:SAN ONOFRE
CO:PLATTEVILLE
CT:EAST HADDAM
CT : WATERFORD
FL: CRYSTAL RIVER
FL:FT. PIERCE
FL : HOMESTEAD
FL : HOMESTEAD
IA: CEDAR RAPIDS
ID: BUHL
IL: MORRIS
IL:ZION
KS:LE ROY
KS:LE ROY
LA: NEW ORLEANS
MA : PLYMOUTH
MD:CONOWIMGO
MD:LUSBY
ME:WISCASSET
MI:BRIDGMAN
MI:CHARLEVOIX
MI: MONROE
MI: SOUTH HAVEN
MN:MONTICELLO
MN:RED WING
MS: PORT GIBSON
NC : CHARLOTTE
NC : SOUTHPORT
NE : RULO
NJ:BAYSIDE
NJ: OYSTER CREEK
Source
TENNESSEE RIVER
CHATTAHOOCHEE RIVER
TENNESSEE RIVER
ARKANSAS RIVER
PACIFIC OCEAN
HUMBOLDT BAY
PACIFIC OCEAN
SOUTH PLATTE RIVER
CONNECTICUT RIVER
LONG ISLAND SOUND
GULF OF MEXICO
ATLANTIC OCEAN
BISCAYNE BAY
BISCAYNE BAY
CEDAR RIVER
SNAKE RIVER
ILLINOIS RIVER
LAKE MICHIGAN
NEOSHO RIVER
NEOSHO RIVER
MISSISSIPPI RIVER
CAPE COD BAY
SUSQUEHANNA RIVER
CHESAPEAKE BAY
MONTSEWAY BAY
LAKE MICHIGAN
LAKE MICHIGAN
LAKE ERIE
LAKE MICHIGAN
MISSISSIPPI RIVER
MISSISSIPPI RIVER
MISSISSIPPI RIVER
CATAWBA RIVER
ATLANTIC OCEAN
MISSOURI RIVER
DELAWARE RIVER
OYSTER CREEK
Date
Collected
04/01/87
04/09/87
04/03/87
04/01/87
04/15/87
04/09/87
06/08/87
04/13/87
05/15/87
05/15/87
04/06/87
04/07/87
05/18/87
04/07/87
05/05/87
05/06/87
04/25/87
05/15/87
06/30/87
03/31/87
04/08/87
04/06/87
04/14/87
04/15/87
04/07/87
04/07/87
04/03/87
04/06/87
04/06/87
04/06/87
04/07/87
04/09/87
04/01/87
04/09/87
04/17/87
04/13/87
04/23/87
Gamma
pCi/1 ±2ff
ND
ND
ND
ND
ND
40K : 253 ±33 %
40K : 260 ±72 %
ND
ND
40K : 300 ±28 %
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
,ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
40 K: 85 ±93%
ND
40K: 160 ±51%
40 K: 90 ±88%
17
-------
Table 10 (continued)
Surface Water
Annual Gamma Analysis
January - December 1987
Location
NV: BOULDER CITY
NY: CHELSEA
NYrOSSINIHG
OH: TOLEDO
OR:BRADWOOD
PA: DANVILLE
SC:ALLEHDALE
SC: BROAD RIVER
SC:HARTSVILLE
TN:DAISY
TN: KINGSTON
TX:EL PASO
TX:MATAGORDA
VA:DOSWELL
VA: NEWPORT NEWS
WA : NORTHPORT
WA:RICHLAND
WI:TWO CREEKS
WI: VICTORY
WV: WHEELING
Source
COLORADO RIVER
HUDSON RIVER
HUDSON RIVER
LAKE ERIE
COLUMBIA RIVER
SUSQUEHANNA RIVER
SAVANNAH RIVER
BROAD RIVER
LAKE ROBINSON
TENNESSEE RIVER
CLINCH RIVER
RIO GRANDE
COLORADO RIVER
NORTH ANNA RIVER
JAMES RIVER
COLUMBIA RIVER
COLUMBIA RIVER
LAKE MICHIGAN
MISSISSIPPI RIVER
OHIO RIVER
Date
Collected
04/30/87
04/01/87
06/15/87
04/01/87
04/29/87
04/22/87
04/30/87
04/09/87
04/06/87
04/16/87
04/14/87
04/29/87
04/22/87
04/09/87
04/09/87
05/20/87
04/21/87
04/27/87
04/13/87
06/05/87
Gamma
pCi/1 ±2
-------
Drinking Water
This program monitors ambient radiation levels in drinking water at 78 sites. These data serve to assess
trends and anomalies in concentrations, and to compare with standards set forth in the EPA "National
Interim Primary Drinking Water Regulations." These regulations provide for approval of supplies when
the combined tacit um-22(> and radium-228 levels do not exceed 5 pCi/1, when the gross alpha (excluding
radon and uranium) levels do not exceed 15 pCi/1, when tritium levels do not exceed 20,000 pCi/1, when the
strontium-90 levels do not exceed 8 pCi/1, and when the gross beta levels do not exceed 50 pCi/1.
Grab samples are taken at the 78 sites which are either major population centers or selected nuclear
facility environs.
The analyses include (a) tritium on a quarterly basis; (b) gross alpha, gross beta, strontium-90, and
gamma on annual composites; (c) radium-226 if the gross alpha exceeds 2 pCi/1 and radium-228 if the
radium-226 falls between 3 and 5 pCi/1; (d) specific iodine-131 on one quarterly sample per year for each
station; and (c) an annual composite for plntonium-238, -239, and -240 and uranium-234, -235, and -238
for stations that demonstrate gross alpha levels greater than 2 pCi/1.
Tritium analyses are performed by scintillation counting of the distilled samples. Gross beta and al-
pha are determined by evaporating an aliquot on a stainless steel planchet for counting. Radium-226 is
determined by the standard emanation technique. Strontium-90 is determined by beta counting a strontium
carbonate precipitate isolated by ion exchange.
Table 1] contains the data in drinking water for January - March 1988.
Table 12 contains the 1-131 in drinking water results for January - December 1987.
19
-------
Table 11
Drinking Water
Tritium Concentrations
January - March 1988
Location
AK: FAIRBANKS
AL:DOTHAN
AL: MONTGOMERY
AL: MUSCLE SHOALS
AL:SCOTTSBORO
AR: LITTLE ROCK
CA: BERKELEY
CA:LOS ANGELES
CO: DENVER
CO : PLATTEVILLE
CT: HARTFORD
DC: WASHINGTON
DE: DOVER
FL: MIAMI
FL: TAMPA
GA: SAVANNAH
HI: HONOLULU
IA: CEDAR RAPIDS
ID: BOISE
ID: IDAHO FALLS
IL: MORRIS
IL:W. CHICAGO
KS:TOPEKA
LA: NEW ORLEANS
MA: LAWRENCE
MD: BALTIMORE
MD:CONOWINGO
ME: AUGUSTA
MI: DETROIT
MI: GRAND RAPIDS
MN: MINNEAPOLIS
MN:RED WING
MS: JACKSON
MS: PORT GIBSON
MT: HELEN A
NC:CHARLOiTE
NC: WILMINGTON
ND: BISMARCK
Date
Collected
01/05/88
01/22/88
01/06/88
12/28/87
12/30/87
01/19/88
01/04/88
01/04/88
01/04/88
01/04/88
01/05/88
01/05/88
01/04/88
01/04/88
01/04/88
03/15/88
01/05/88
01/04/88
01/13/88
02/16/88
01/14/88
01/04/88
01/04/88
01/06/88
01/04/88
02/03/88
01/12/88
01/05/88
01/18/88
01/15/88
01/19/88
03/09/88
01/14/88
01/14/88
01/04/88
01/06/88
01/15/88
01/04/88
nCi/1 ±1ff
0.2 0.2
0.1 0.2
0.3 0.2
0.3 0.2
0.3 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.3 0.2
0.2 0.2
0.3 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.3 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.3 0.2
0.4 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.2 0.2
0.2 0.2
0.3 0.2
0.5 0.2
0.2 0.2
0.2 0.2
20
-------
Table 11 (continued)
Drinking Water
Tritium Concentrations
January - March 1988
Location
HE: LINCOLN
NH : CONCORD
NJ:TRENTON
NJ:WARETOWN
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY : SYRACUSE
OH: CINCINNATI
OH : COLUMBUS
OH: EAST LIVERPOOL
OH:PAINESVILLE
OH: TOLEDO
OK: OKLAHOMA CITY
OR: PORTLAND
PA COLUMBIA
PA:HARRISBURG
PA: PITTSBURGH
PC:ANCON
RI: PROVIDENCE
SC:BARNWELL
SC: COLUMBIA
SC:HARTSVILLE
SC:JENKINSVILLE
SC: SENECA
TN: CHATTANOOGA
TN:KNOXVILLE
TX: AUSTIN
VA:DOSWELL
VA:LYNCHBURG
VA: VIRGINIA BEACH
VI: ST. THOMAS
WA: HIGHLAND
WA: SEATTLE
WI: GENOA CITY
WI: MADISON
Date
Collected
01/07/88
01/01/88
01/21/88
01/21/88
01/07/88
01/04/88
01/04/88
01/04/88
03/21/88
01/07/88
02/02/88
02/18/88
01/04/88
01/01/88
01/05/88
01/05/88
01/14/88
01/11/88
02/18/88
01/11/88
01/13/88
01/13/88
01/04/88
01/05/88
01/22/88
01/26/88
02/29/88
01/04/88
02/11/88
01/06/88
01/04/88
02/06/88
02/12/88
01/05/88
01/01/88
01/11/88
01/06/88
nCi/1 ±2cr
0.3 0.2
0.1 0.2
0.1 0.2
0.1 0.2
0.2 0.2
0.1 0.2
0.3 0.2
0.3 0.2
0.1 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.3 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.3 0.2
0.1 0.2
0.1 0.2
0.1 0.2
0.1 0.2
0.5 0.2
0.1 0.2
0.2 0.2
0.3 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.3 0.2
0.2 0.2
0.1 0.2
0.2 0.2
a = Sigma Counting Error.
21
-------
Table 12
Iodine-131 in Drinking Water Concentrations
January - December 1987
Location
AK: FAIRBANKS
AL: DOTH AN
AL: MONTGOMERY
AL: MUSCLE SHOALS
AL:SCOTTSBORO
AR: LITTLE ROCK
CA: BERKELEY
CA:LOS ANGELES
CO: DENVER
CO : PLATTEVILLE
CT: HARTFORD
DC: WASHINGTON
DE : DOVER
FL: MIAMI
FL:TAMPA
GA:BAXLEY
GA: SAVANNAH
HI: HONOLULU
IA: CEDAR RAPIDS
ID:BOISE
ID: IDAHO FALLS
IL: MORRIS
IL:W. CHICAGO
KS:TOPEKA
LA: NEW ORLEANS
MA: LAWRENCE
MA:ROWE
MD: BALTIMORE
MD:CONOWINGO
ME: AUGUSTA
MI: DETROIT
MI: GRAND RAPIDS
MN: MINNEAPOLIS
MM: RED WING
MO: JEFFERSON CITY
MS: JACKSON
MS: PORT GIBSON
Date
Collected
01/16/87
01/08/87
08/13/87
07/07/87
10/08/87
04/01/87
04/13/87
01/06/87
01/06/87
04/13/87
01/05/87
10/15/87
04/01/87
01/06/87
01/06/87
09/22/87
09/29/87
04/23/87
01/06/87
06/30/87
08/11/87
01/15/87
03/30/87
01/05/87
01/07/87
01/08/87
01/21/87
09/04/87
01/13/87
04/08/87
01/07/87
01/09/87
01/15/87
01/08/87
09/02/87
04/10/87
04/09/87
pCi/1 ±2
-------
Table 12 (continued)
Iodine-131 in Drinking Water Concentrations
January - December 1987
Location
MT: HELENA
NC : CHARLOTTE
HC: WILMINGTON
ND: BISMARCK
ME: LINCOLN
NH : CONCORD
NJ:WARETOWN
MM: SANTA FE
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY: SYRACUSE
OH: CINCINNATI
OH : COLUMBUS
OH: EAST LIVERPOOL
OH:PAIHESVILLE
OH: TOLEDO
OK: OKLAHOMA CITY
OR: PORTLAND
PA: COLUMBIA
PA:HARRISBURG
PA: PITTSBURGH
PC:ANCON
RI: PROVIDENCE
SC:BARNWELL
SC: COLUMBIA
SC:HARTSVILLE
SC:JENKINSVILLE
SC: SENECA
TN: CHATTANOOGA
TN:KNOXVILLE
TX: AUSTIN
VA:DOSWELL
VA : LYNCHBURG
VA: VIRGINIA BEACH
VI: ST. THOMAS
Date
Collected
01/05/87
01/07/87
04/09/87
01/05/87
04/14/87
01/06/87
04/23/87
01/08/87
01/07/87
04/01/87
01/07/87
01/07/87
03/30/87
09/30/87
03/31/87
01/14/87
01/06/87
01/13/87
01/07/87
01/09/87
04/09/87
04/07/87
01/14/87
07/09/87
01/06/87
10/30/87
01/07/87
04/06/87
04/24/87
04/21/87
04/02/87
03/30/87
01/09/87
04/14/87
04/01/87
08/13/87
08/03/87
pCi/1 ±2ff
0.1 0.1
0.1 0.1
0.0 0.3
0.2 0.1
0.2 0.1
-0.1 0.1
0.0 0.1
-0.2 0.1
0.0 0.1
0.2 0.1
0.2 0.1
0.2 0.1
0.1 0.1
0.4 0.3
0.1 0.1
0.2 0.1
-0.6 0.1
0.1 0.1
-0.3 0.1
0.0 0.1
0.3 0.3
0.1 0.1
0.1 0.1
0.3 0.2
-0.1 0.1
0.1 0.1
-0.2 0.1
-0.2 0.1
-0.1 0.1
-0.2 0.1
0.0 0.1
0.1 0.1
0.1 0.1
-0.1 0.1
0.1 0.1
0.4 0.2
-0.1 0.5
23
-------
Table 12 (continued)
Iodine-131 in Drinking Water Concentrations
January - December 1987
Location
WA: HIGHLAND
WA: SEATTLE
WI: MADISON
Date
Collected
01/13/87
04/03/87
04/07/87
pCi/1 ±2
-------
DATA EPA
ENVIRONMENTAL RADIATION
AMBIENT MONITORING SYSTEM (ERAMS)
Section HI. External Gamma Ambient Monitoring Program
The external gamma monitoring program, which began in October 1978, provides a continuous measure-
ment of ambient gamma exposure rates, including cosmic, at selected sites throughout the continental United
States. Data from this program are used to evaluate fluctuations in natural background due to variations in
environmental conditions and to provide a means of monitoring any significant increases in ambient gamma
levels. The program consists of approximately 22 sites representing wide geographic coverage throughout the
country.' Although exposure measurements at these few sites are not totally representative of nationwide
exposures, they do indicate national trends.
The monitoring program utilizes CaF2:Mn thermoluminescent dosimeters (TLD's). These dosimeters
are commercially available glass-bulb type dosimeters with energy compensating shields. A group of three
TLD's is located at each station or site. Dosimeters are annealed by the station operator prior to positioning
in the field. The dosimeters are returned to EERF for readout approximately every three months. Several
dosimeters are annealed by the station operator as controls and returned with the exposed field dosimeters
to correct for any exposures accumulated during shipment.
Table 13 contains the data for environmental gamma ambient monitoring program January March
1988.
Some of these sites may not return dosimeters each period and consequently the number of sites listed may vary slightly.
25
-------
Table 13
Environmental Gamma Ambient Monitoring Program
January - March 1988
Location
CA: BERKELEY
CO: DENVER
FL : ORLANDO
ID:BOISE
IL: CHICAGO
ND: BISMARCK
NJ:TRENTON
NM: SANTA FE
NV:LAS VEGAS
NY: NEW YORK
OH : COLUMBUS
OK: OKLAHOMA CITY
OR: PORTLAND
PA : HARRISBURG
PA PITTSBURGH
RI: PROVIDENCE
SC:BARNWELL
SC: COLUMBIA
VA: RICHMOND
VT:MONTPELIER
Date Range
01/19/88-04/05/88
01/26/88-04/06/88
01/19/88-03/31/88
01/19/88-03/31/88
01/19/88-04/11/88
01/15/88-04/04/88
01/15/88-04/08/88
01/22/88-04/07/88
01/14/88-04/01/88
01/21/88-04/19/88
02/16/88-04/19/88
01/22/88-04/05/88
01/29/88-04/01/88
01/15/88-04/05/88
01/15/88-04/04/88
01/15/88-04/01/88
01/28/88-04/14/88
01/15/88-03/31/88
01/15/88-04/12/88
02/02/88-04/12/88
Integrated
Exposure
mR
14.7
27.1
11.9
22.5
21.8
23.1
26.1
30.5
15.2
19.2
12.9
17.5
12.7
15.9
24.2
18.5
26.2
21.1
17.6
14.5
Exposure
Rate
j/R/hr ±2ff
7.9 3.5
15.9 4.7
6.9 15.7
13.0 4.3
11.0 6.9
12.0 6.7
12.9 4.2
16.7 4.1
8.1 5.3
9.0 5.5
8.5 5.3
9.8 15.9
8.4 5.6
8.2 5.6
12.5 9.1
10.0 7.0
14.2 4.7
11.6 7.6
8.3 4.1
8.6 6.3
-------
DATA EPA
ENVIRONMENTAL RADIATION
AMBIENT MONITORING SYSTEM (ERAMS)
Section IV. Milk Program
Pasteurized Milk
This is a cooperative program with the Dairy and Lipicl Products Branch, Milk Sanitation Section, Food
and Drug Administration. Milk is a reliable indicator of the general population's intake of nuliomiclides
since it is consumed fresh by a large segment of the population and can contain several of the biologically
important radionuclides that result from environmental releases from nuclear activities. A primary function
of this program is to obtain reliable monitoring data relative to current radionuclide concentrations and
determine any long-term trends.
Monthly samples are collected at 65 sampling sites with one or more located in each state, Puerto Rico,
and the Panama Canal Zone. The samples are composited, according to production, from the major milk
suppliers representing more than 80 percent of the milk consumed in a given population center.
The samples are analyzed for gamma emitting nuclides, which include iodine-131, barium—140, cesium—
137, and potassium. All samples collected in July are analyzed for strontium-89 and strontinm-90. Also,
for the first month of the three quarters beginning January, April and October, 10 regional composite
samples of milk made up from the states within each of EPA's 10 regions are analyzed for strontium-89 and
strontium—90.
Iodine-131, barium-140, cesium-137, and potassium are determined by gamma spectral analysis. Stron-
tium-89 and strontinm-90 are determined by beta counting a total strontium precipitate that has been
chemically separated by ion exchange.
Tables 14-16 contain the concentrations of radionuclides in pasteurized milk for January - March 1988.
Table .17 contains the concentrations of stronlium-90 and strontium-89 in pasteurized milk EPA Regional
Composites for January March 1988.
27
-------
Table 14
Concentrations of Radionuclides
in Pasteurized Milk
January 1988
Location
AL: MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CA:LOS ANGELES
CA: SACRAMENTO
CA:SAN FRANCISCO
CO: DENVER
CT: HARTFORD
DE: WILMINGTON
GA: ATLANTA
HI: HONOLULU
IA:DES MOINES
IL: CHICAGO
IN: INDIANAPOLIS
KS: WICHITA
KY: LOUISVILLE
LA: NEW ORLEANS
MD: BALTIMORE
MI: DETROIT
MI: GRAND RAPIDS
MN: MINNEAPOLIS
MN:ST. PAUL
MO: KANSAS CITY
MO: ST. LOUIS
MS: JACKSON
MT : HELENA
NC : CHARLOTTE
ND:MINOT
NE: OMAHA
NH: MANCHESTER
NJ:TRENTON
NM: ALBUQUERQUE
NV:LAS VEGAS
NY: BUFFALO
NY: NEW YORK CITY
NY: SYRACUSE
OH CINCINNATI
Date
Collected
01/08/88
01/05/88
01/06/88
01/05/88
01/05/88
01/19/88
01/04/88
01/04/88
01/06/88
01/11/88
01/04/88
01/05/88
01/04/88
01/04/88
01/04/88
01/05/88
01/15/88
01/01/88
01/07/88
01/04/88
01/11/88
01/04/88
01/08/88
01/06/88
01/04/88
01/06/88
01/12/88
01/26/88
01/08/88
01/11/88
01/07/88
01/04/88
01/25/88
01/12/88
01/04/88
01/04/88
01/22/88
K
g/1 ±2(7
1.57 0.12
1.33 0.12
1.51 0.13
1.35 0.09
1.49 0.13
1.31 0.12
1.24 0.08
1.44 0.09
1.49 0.13
1.46 0.13
1.39 0.12
1.64 0.13
1.51 0.13
1.48 0.08
1.45 0.08
1.43 0.13
1.49 0.13
1.33 0.12
1.49 0.12
1.47 0.12
1.59 0.13
1.40 0.13
1.48 0.24
1.60 0.12
1.38 0.12
1.58 0.12
1.60 0.24
1.49 0.12
1.59 0.12
1.25 0.12
1.55 0.12
1.42 0.08
1.45 0.12
1.42 0.13
1.54 0.08
1.21 0.12
1.53 0.13
137Cs
pCi/1 ±2
-------
Table 14 (continued)
Concentrations of Radionuclicles
in Pasteurized Milk
January 1988
Location
OK: OKLAHOMA CITY
OR: PORTLAND
PA PHILADELPHIA
PA: PITTSBURGH
PC: CRISTOBAL
PR: SAN JUAN
SC : CHARLESTON
SD:RAPID CITY
TN: CHATTANOOGA
TN:KNOXVILLE
TN: MEMPHIS
TX: AUSTIN
TX:FT. WORTH
VA : NORFOLK
VT: BURLINGTON
WA: SEATTLE
WA: SPOKANE
WV: CHARLESTON
WY:LARAMIE
Date
Collected
01/04/88
01/04/88
01/04/88
01/04/88
01/25/88
01/26/88
01/22/88
01/06/88
01/04/88
01/04/88
01/20/88
01/08/88
01/12/88
01/05/88
01/04/88
01/05/88
01/24/88
01/19/88
01/12/88
K
g/1 ±2
-------
Table 15
Concentrations of Radionuclides
in Pasteurized Milk
February 1988
Location
AL: MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CA:LOS ANGELES
CA: SACRAMENTO
CA:SAN FRANCISCO
CO: DENVER
CT: HARTFORD
DE: WILMINGTON
FLtTAMPA
GA : ATLANTA
HI: HONOLULU
IA:DES MOINES
ID: IDAHO FALLS
IL: CHICAGO
IN: INDIANAPOLIS
KS: WICHITA
KY: LOUISVILLE
LA: NEW ORLEANS
MD: BALTIMORE
ME : PORTLAND
MI: DETROIT
MI: GRAND RAPIDS
MN: MINNEAPOLIS
MN:ST. PAUL
MO: KANSAS CITY
MO: ST. LOUIS
MS: JACKSON
MT: HELEN A
NC: CHARLOTTE
ND:MINOT
NE: OMAHA
NH: MANCHESTER
NJ: TRENTON
NM : ALBUQUERQUE
NY: BUFFALO
NY: NEW YORK CITY
Date
Collected
02/04/88
02/01/88
02/09/88
02/02/88
02/02/88
02/04/88
02/01/88
02/01/88
02/03/88
02/23/88
02/08/88
02/02/88
0*2/01/88
02/24/88
02/01/88
02/08/88
02/02/88
02/02/88
02/19/88
02/05/88
02/02/88
02/11/88
02/08/88
02/01/88
02/01/88
02/12/88
02/03/88
02/03/88
02/08/88
02/09/88
02/24/88
02/08/88
02/01/88
02/03/88
02/01/88
02/16/88
02/01/88
K
g/1 ±2
-------
Table 15 (continued)
Concentrations of Radionuclides
in Pasteurized Milk
February 1988
Location
MY: SYRACUSE
OH: CINCINNATI
OK: OKLAHOMA CITY
OR : PORTLAND
PA: PHILADELPHIA
PA: PITTSBURGH
PC: CRISTOBAL
PR: SAN JUAN
SC : CHARLESTON
SD: RAPID CITY
TN: CHATTANOOGA
TN:KNOXVILLE
TN: MEMPHIS
TX: AUSTIN
TX:FT. WORTH
VA: NORFOLK
VT: BURLINGTON
WA: SEATTLE
WA: SPOKANE
WV: CHARLESTON
WY:LARAMIE
Date
Collected
02/01/88
02/29/88
02/01/88
02/02/88
02/08/88
02/10/88
02/25/88
02/18/88
02/17/88
02/01/88
02/07/88
02/08/88
02/09/88
02/09/88
02/03/88
02/24/88
02/01/88
02/10/88
02/24/88
02/23/88
02/04/88
K
g/1 ±2
-------
Table 16
Concentrations of Raclionuclides
in Pasteurized Milk
March 1988
Location
AK: ANCHORAGE
AL: MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CA:LOS ANGELES
CA: SACRAMENTO
CA:SAN FRANCISCO
CO: DENVER
CT : HARTFORD
DE: WILMINGTON
FL: TAMPA
GA: ATLANTA
HI: HONOLULU
IL: CHICAGO
IN: INDIANAPOLIS
KS: WICHITA
KY: LOUISVILLE
LA: NEW ORLEANS
MD: BALTIMORE
ME: PORTLAND
MI: DETROIT
MI: GRAND RAPIDS
MN: MINNEAPOLIS
MN:ST. PAUL
MO: KANSAS CITY
MO: ST. LOUIS
MS: JACKSON
MT: HELENA
NC : CHARLOTTE
ND:MINOT
NE: OMAHA
NH: MANCHESTER
NJ:TRENTON
NM: ALBUQUERQUE
NV:LAS VEGAS
NY: BUFFALO
NY: NEW YORK CITY
Date
Collected
03/10/88
03/11/88
03/01/88
03/09/88
03/03/88
03/01/88
03/04/88
03/01/88
03/05/88
03/01/88
03/01/88
03/14/88
03/01/88
03/01/88
03/07/88
03/23/88
03/08/88
03/18/88
03/04/88
03/02/88
03/10/88
03/07/88
03/07/88
03/01/88
03/11/88
03/02/88
03/04/88
03/23/88
03/14/88
03/28/88
03/11/88
03/07/88
03/09/88
03/07/88
03/14/88
03/11/88
03/07/88
K
g/1 ±2(7
1.46 0.09
1.42 0.12
1.38 0.12
1.49 0.13
1.51 0.13
1.51 0.09
1.35 0.12
1.50 0.09
1.36 0.12
1.50 0.13
1.59 0.13
1.17 0.12
1.47 0.13
1.50 0.13
1.46 0.13
1.48 0.12
1.49 0.12
1.45 0.09
1.50 0.09
1.47 0.09
1.47 0.13
1.40 0.09
1.55 0.13
1.57 0.09
1.51 0.13
1.56 0.09
1.56 0.13
1.54 0.13
1.57 0.24
1.42 0.13
1.40 0.12
1.28 0.12
1.47 0.13
1.37 0.12
1.46 0.13
1.41 0.13
1.51 0.13
137Cs
pCi/1 ±2<7
5 5
3 7
5 9
2 7
0 7
4 5
9 9
0 5
9 9
9 9
8 9
3 9
5 9
3 7
5 9
2 7
6 7
8 6
4 5
7 6
-1 9
11 6
-1 7
3 5
5 7
1 5
8 7
3 7
21 18
-2 9
3 7
4 7
6 9
7 7
-1 9
9 9
8 9
140Ba
pCi/1 ±2
-------
Table 16 (continued)
Concentrations of Ratlionuclicles
in Pasteurized Milk
March 1988
Location
NY: SYRACUSE
OH:CIHCINHATI
OK: OKLAHOMA CITY
OR: PORTLAND
PA PHILADELPHIA
PA: PITTSBURGH
PC: CRISTOBAL
PR: SAN JUAN
SC: CHARLESTON
SD: RAPID CITY
TN: CHATTANOOGA
TN:KNOXVILLE
TN: MEMPHIS
TX: AUSTIN
TX:FT. WORTH
VA : NORFOLK
VT: BURLINGTON
WA: SEATTLE
WV : CHARLESTON
WY:LARAMIE
Date
Collected
03/07/88
03/31/88
03/14/88
03/07/88
03/07/88
03/07/88
03/31/88
03/14/88
03/15/88
03/08/88
03/07/88
03/07/88
03/15/88
03/10/88
03/09/88
03/31/88
03/31/88
03/01/88
03/29/88
03/02/88
K
g/1 ±2cr
1.62 0.13
1.59 0.13
1.52 0.13
1.60 0.13
1.50 0.13
1.40 0.13
1.48 0.12
1.33 0.08
1.42 0.13
1.51 0.13
1.54 0.13
1.50 0.09
1.52 0.13
1.33 0.12
1.40 0.07
1.54 0.13
1.49 0.09
1.42 0.13
1.70 0.24
1 . 40 0 . 09
137Cs
pCi/1 ±2
-------
Table 17
Stroiitium-90 and Strontium-89 in Pasteurized Milk
EPA Regional Composites
January - March 1988
EPA
Region
I
II
III
IV
V
VI
VII
VIII
IX
X
Date
01/06/88
01/11/88
01/06/88
01/11/88
01/08/88
01/08/88
01/06/88
01/11/88
01/11/88
01/11/88
90Sr
pCi/1 ±2a
2.0 0.6
2.1 0.3
2.0 0.4
2.3 0.6
2.3 0.8
0.8 0.4
1.4 0.8
1.8 0.6
0.9 0.4
1.1 0.4
89Sr
pCi/1 ±2
-------
Carbon-14 in Milk
Nine stations, chosen for wide geographical distribution, contribute milk samples for annual analysis
of carbon-14. These samples are monitored for carbon--14 levels in the food chain resulting from nuclear
testing. Analysis consists of combusting the samples and measuring released carbon dioxide through liquid
scintillation. The last c.arbon-14 results were for samples collected during May 1975 and May 1979. They
were published in Environmental Radiation Data: Report 29.
AUGAFB, AL (891121) 500
*U.S. GOVERNMENT PRINTING OFFICE: 1989/631-002/86235
35
-------
Environmental Radiation Data (ERD) is published quarterly (January, April, July, October) by the
U.S. Environmental Protection Agency's Office of Radiation Programs.
Requests for information concerning publication and distribution of ERD should be directed to:
CJharles M. Petko
Technical Support Branch
Eastern Environmental Radiation Facility
1890 Federal Drive
Montgomery, Alabama 36109
Requests for information concerning the operation of ERAMS should be directed to:
Jon A. Broadway, Chief
Monitoring and Analytical Services Branch
Eastern Environmental Radiation Facility
1890 Federal Drive
Montgomery, Alabama 36109
or to:
Robert S. Dyer, Chief
Environmental Studies and Statistics Branch
Analysis and Support Division (ANR-461)
U. S. Environmental Protection Agency
Waterside Mall East
401 M Street, SW
Washington, DC 20460
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