United States            National Air and Radiation
             Environmental Protection        Environmental Laboratory
             Agency              1504 Avenue A         EPA 520/5-91-025
             Office of Radiation Programs       Montgomery, AL 36115-2601     March 1991


             Radiation
&EPA
              Environmental Radiation
              Data
              Report 63

              July-September 1990

-------
ENVIRONMENTAL




RADIATION




DATA
                    REPORT 63



                July - September 1990
      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' National Air and Radiation Environmental Laboratory (NAREL) 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 NAREL to analyze the ERAMS samples are contained  in
Eastern Environmental Radiation Facility Radiochemistry Procedures Manual (EPA 620/5-84-006). Station
operation and sample collection are in accordance  with procedures contained in the ERAMS Manual (EPA
520/5-84-007, 008, 009).
                                                 m

-------
                    Environmental Radiation Data









                                     Contents




                                                                                 Page




Data - Reporting Rationale and Procedures                                             ix




Data - ERAMS                                                                      1




      Section I.    Air Program                                                       1




                   1. Airborne Particulates and Precipitation                             1




                   2. Plutonium and Uranium in Airborne Particulates                    16




                   3. Krypton-85                                                   17




      Section II.   Water Program                                                   18




                   1. Surface Water                                                 18




                   2. Drinking Water                                                21




      Section III.  External Gamma Ambient Monitoring Program                         26




      Section IV.  Milk Program                                                    27




                   1. Pasteurized Milk                                               27




                   2. Carbon-14 in Milk                                             34

-------
                        Environmental Radiation Data









                                       List  of Tables




Table                                                                                   Page




  1      ERAMS Reporting Increments and Minimum Detectable Levels                         xi




  2      Gross Beta in Airborne Participates: July 1990                                       2




  3      Gross Beta in Airborne Particulates: August 1990                                     4





  4      Gross Beta in Airborne Particulates: September 1990                                  6




  5      Gross Beta in Precipitation: July 1990                                               8




  6      Gross Beta in Precipitation: August 1990                                            10




  7      Gross Beta in Precipitation: September 1990                                         12




  8      Tritium in Precipitation: July - September 1990                                       14




  9      Tritium in Surface  Water: July - September 1990                                      19




  10    Tritium in Drinking Water: July - September 1990                                    22




  11    Iodine-131 in Drinking Water: January - December 1990                               24




  12    Radionuclides in Pasteurized  Milk: July  1990                                         28




  13    Radionuclides in Pasteurized  Milk: August 1990                                       30




  14    Radionuclides in Pasteurized  Milk: September 1990                                    32
                                               Vll

-------
                             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  radioactivity measurements will be reported, unless
    the value is below the minimum detectable  level  (MDL) at the  2er confidence level,  then  < minimum
    detectable level will be reported.
         MDL is defined as the 3
-------
                                       Table  1
ERAMS  Reporting Increments and Minimum  Detectable Levels
                           for Radionuclide Analyses
Radionuclide
Gross Alpha
t Gross Beta
Tritium
Carbon-14
Krypton-85
tf Plutonium-238,239,240
t Uranium-234, 235,238
Radium-226
Strontium-90
ft Strontium-89
tt Iodine-131
Iodine-129
Cesium-137
ft Barium- 140
Potassium
Potassium-40
Media
Water
Air
Water
Precipitation
Reporting
Units
pCi/1
pCi/m3
PCi/l
nCi/m2
Reporting
Increments
1 pCi/1
0.01 pCi/m3
1 pCi/1
0.01 nCi/m3
Minimum
Detectable
Levels
2 pCi/1
0.01 pCi/m3
1 pCi/1
0.01 nCi/m2
(specific radiochemical analyses)
Water
Milk
Milk
Ambient Air
Air
Milk
Water
Air
Milk
Water
Water
Milk
Water
Milk
Milk
Water
Water
Milk
Milk
Water
Milk
Water
Milk
Water
Water
nCi/1 ' 0.1 nCi/1
nCi/1 0,1 nCi/1
pCi/1 1 pCi/1
pCi/m8
aCi/m8
pCi/1
pCi/1
aCi/m3
pCi/1
pCi/1
pCi/1
pCi/1
0.1 pCi/m8
0.1 aCi/m8
0.001 pCi/1
0.001 pCi/1
0.1 aCi/m3
0.001 pCi/1
0.001 pCi/1
0.1 pCi/1
0.1 pCi/1
pCi/1 0.1 pCi/1
pCi/1 1 pCi/1
pCi/1
PCi/l
PCi/l
fCi/1
pCi/1
pCi/1
pCi/1
pCi/1
g/1
g/1
pCi/1
1 pCi/1
1 pCi/1
0.1 pCi/1
0.1 fCi/1
1 pCi/1
1 pCi/1
1 pCi/1
1 pCi/1
0.1 g/1
0.1 g/1
1 pCi/1
0.2 nCi/1
0.2 nCi/1
16 pCi/1
2 pCi/m8
0.015 pCi
0.015 pCi
0.015 pCi
0.015 pCi
0.015 pCi
0.015 pCi
0.1 pCi/1
1 pCi/1
1 pCi/1
5 pCi/1
10pCi/l
10 pCi/1
0.4 pCi/1
0.4 fCi/1
10 pCi/1
10 pCi/1
10 pCi/1
10 pCi/1
0.12 g/1
0.12 g/1
100 pCi/1
   f The value of MDL for precipitation in terms of nCi/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| Activity as of the day of counting.
                                            XI

-------
                                                                                       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 particulates
and precipitation samples as indicator measurements in assessing the general (national) impact of all con-
tributing sources  on environmental levels of  radiation.
    Airborne particulates 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.
    Filters (10-cm 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 NAREL 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/m8. 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 NAREL  where  they are composited monthly for gamma scans, tritium, and  gross beta activity
measurements. 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 National Air and  Radiation Environ-
mental Laboratory, 1504 Avenue A, Montgomery, AL  36115-2601.

    Tables  2-4 contain the data in airborne particulate samples for July - September 1990.   Tables 5-7
contain the  data in precipitation samples for July - September 1990. Table 8 contains the data for tritium
in precipitation samples for  July - September 1990 at the selected sites.
    The counts at five hours for the Montgomery, Alabama, station are performed on a low background beta counter.

                                                  1

-------
              Table 2
Gross Beta in Airborne Participates
              July 1990
Location
AL: MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CA: BERKELEY
CArLOS ANGELES
CO: DENVER
CT: HARTFORD
DE: WILMINGTON
FL: JACKSONVILLE
FL: MIAMI
HI: HONOLULU
IA:IOWA CITY
ID:BOISE
ID: IDAHO FALLS
IL: CHICAGO
IN: INDIANAPOLIS
KS:TOPEKA
KY: FRANKFORT
LA: NEW ORLEANS
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
NY:YAPHANK
Number
of
Samples
9
9
9
8
9
8
10
9
9
9
9
9
7
9
9
9
9
3
5
9
9
9
8
9
8
8
8
9
9
9
5
9
1
9
9
4
8
5-Hour Field
Estimate
Max Min Avg
(pCi/m3)
1.4 0.0 0.4
1.8 0.1 0.9
3.0 0.3 1.6
0.0 0.0 0.0
0.5 0.1 0.3
3.2 0.2 1.6
0.2 0.0 0.1
0.7 0.0 0.3
0.2 0.0 0.1
0.1 0.0 0.0
0.2 0.1 0.2
0.4 0.1 0.2
2.2 0.2 0.9
0.0 0.0 0.0
0.9 0.2 0.4
* * *
4.7 2.1 3.2
1.4 0.4 1.0
0.2 0.1 0.1
0.8 0.1 0.3
1.3 0.2 0.6
1.1 0.1 0.5
1.0 0.6 0.8
1.9 0.4 0.8
1.6 0.3 0.6
0.0 0.0 0.0
0.8 0.3 0.6
4.7 0.0 2.4
0.7 0.1 0.4
2.8 0.2 1.0
0.9 0.4 0.7
1.2 0.2 0.6
0.1 0.1 0.1
1.3 0.3 0.7
0.9 0.4 0.5
0.3 0.0 0.1
0.4 0.1 0.3
NAREL Lab
Measurment
Max Min Avg
(pCi/m8)
0.08 0.01 0.02
0.04 0.02 0.03
0.04 0.01 0.02
0.01 0.00 0.00
0.01 0.01 0.01
0.03 0.01 0.02
0.01 0.00 0.00
0.02 0.00 0.01
0.02 0.00 0.01
0.01 0.00 0.00
0.00 0.00 0.00
0.02 0.01 0.02
0.04 O.Q2 0.02
0.03 0.02 0.02
0.03 0.01 0.01
0.04 0.02 0.02
0.03 0.02 0.02
0.05 0.01 0.03
0.02 0.01 0.02
0.02 0.00 0.01
0.02 0.01 0.01
0.03 0.01 0.02
0.06 0.02 0.03
0.05 0.01 0.03
0.05 0.01 0.03
0.01 0.01 0.01
0.02 0.01 0.01
0.03 0.02 0.02
0.02 0.00 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.05 0.02 0.03
0.01 0.01 0.01
0.01 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.01 0.01 0.01

-------
                   Table 2 (continued)
         Gross  Beta in Airborne Participates
                          July 1990
Location
OH: COLUMBUS
OH:PAINESVILLE
OH: ROSS
OH: TOLEDO
OK: OKLAHOMA CITY
OR: PORTLAND
PA:HARRISBURG
PA: PITTSBURGH
RI: PROVIDENCE
SC:BARNWELL
SC: COLUMBIA
SD: PIERRE
TN:KNOXVILLE
TN: NASHVILLE
TX: AUSTIN
TX:EL PASO
UT:SALT LAKE CITY
VA : LYNCHBURG
WA:OLYMPIA
UA: SPOKANE
WIrMADISON
WV: CHARLESTON
Number
of
Samples
6
9
3
9
9
9
9
9
9
2
9
7
8
9
9
9
8
9
9
9
7
8
5-Hour Field
Estimate
Max Min Avg
(pCi/ms)
0.4 0.3 0.4
0.6 0.2 0.4
0.0 0.0 0.0
0.6 0.1 0.3
2.0 0.5 1.1
0.0 0.0 0.0
0.6 0.1 0.3
0.3 0.1 0.2
0.4 0.1 0.3
0.1 0.0 0.1
0.8 0.2 0.4
1.1 0.3 0.8
2.T 0.3 1.1
1.2 0.1 0.6
0.4 0.2 0.3
9.6 0.2 1.6
0.9 0.3 0.5
0.9 0.0 0.4
0.7 0.1 0.3
0.9 0.3 0.6
1.5 0.3 0.8
0.8 0.1 0.3
NAREL Lab
Measurment
Max Min Avg
(pCi/m3)
0.03 0.02 0.03
0.03 0.01 0.02
0.03 0.01 0.02
0.02 0.01 0.01
0.03 0.02 0.02
0.02 0.00 0.01
0.01 0.00 0.01
0.02 0.00 0.01
0.01 0.00 0.01
0.01 0.01 0.01
0.05 0.01 0.02
0.04 0.01 0.03
0.04 0.01 0.02
0.08 0.01 0.03
0.02 0.01 0.01
0.04 0.02 0.03
0.05 0.03 0.04
0.01 0.00 0.01
0.01 0.00 0.01
0.02 0.01 0.01
0.02 0.01 0.02
0.02 0.01 0.01
* Instrumentation defective,
 Minimum Detectable Limit
 Minimum Detectable Limit
no reading repoited.
for field estimates - 0.1 pCi/m8.
for laboratory measurement - 0.01 pCi/m8.

-------
              Table 3
Gross Beta in Airborne Particulates
            August 1990
Location
AL : MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CA: BERKELEY
CA:LOS ANGELES
CO: DENVER
CT: HARTFORD
DE: WILMINGTON
FL: JACKSONVILLE
FL: MIAMI
HI: HONOLULU
lAilOWA CITY
ID: BOISE
ID: IDAHO FALLS
IL: CHICAGO
IN: INDIANAPOLIS
KS:TOPEKA
KY : FRANKFORT
LA: NEW ORLEANS
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
NY:YAPHANK
Number
of
Sample*
9
9
9
6
9
9
9
9
9
9
9
9
9
9
9
9
8
5
5
8
9
8
9
9
9
8
8
7
9
9
8
9
4
9
9
3
7
5-Hour Field
Estimate
Max Min Avg
(pCi/m8)
0.1 0.0 0.1
2.0 0.4 1.3
3.4 0.9 1.9
0.0 0.0 0.0
0.6 0.0 0.2
4.4 0.5 1.9
0.3 0.1 0.2
0.5 0.1 0.3
0.2 0.1 0.1
0.1 0.0 0.1
0.3 0.1 0.2
0.7 0.2 0.4
1.4 0.3 0.8
0.0 0.0 0.0
0.9 0.1 0.4
* * *
3.7 2.2 2.9
1.1 0.2 0.8
0.4 0.2 0.3
0.9 0.0 0.4
1.1 0.1 0.5
1.1 0.1 0.5
3.3 0.4 1.5
1.9 0.2 1.1
0.9 0.1 0.5
0.0 0.0 0.0
1.3 0.5 1.0
2.0 0.0 1.0
0.7 0.2 0.4
2.0 0.2 0.9
1.1 0.1 0.6
0.9 0.4 0.6
0.2 0.0 0.1
1.0 0.1 0.5
1.0 0.3 0.6
0.4 0.2 0.3
0.6 0.1 0.4
NAREL Lab
Measurment
Max Min Avg
(pCi/m8)
0.03 0.01 0.01
0.05 0.02 0.03
0.02 0.01 0.02
0.02 0.00 0.01
0.01 0.01 0.01
0.03 0.02 0.02
0.02 0.00 0.01
0.02 0.01 0.01
0.02 0.01 0.01
0.02 0.00 0.01
0.01 0.00 0.00
0.02 0.01 0.02
0.05 0.02 0.03
0.04 0.02 0.03
0.03 0.01 0.02
0.03 0.01 0.02
0.03 0.02 0.02
0.04 0.01 0.03
0.03 0.02 0.02
0.02 0.00 0.01
0.03 0.00 0.02
0.03 0.01 0.02
0.05 0.01 0.03
0.14 0.02 0.06
0.08 0.02 0.03
0.02 0.01 0.01
0.02 0.01 0.01
0.02 0.01 0.02
0.01 0.01 0.01
0.02 0.00 0.01
0.02 0.01 0.02
0.06 0.02 0.03
0.01 0.01 0.01
0.02 0.00 0.01
0.04 0.01 0.02
0.02 0.01 0.02
0.01 0.00 0.01

-------
                   Table 3 (continued)

         Gross Beta in Airborne Particulates
                         August 1990
Location
OH: COLUMBUS
OHrPAINESVILLE
OH: ROSS
OH: TOLEDO
OK: OKLAHOMA CITT
OR: PORTLAND
PA:HARRISBUR6
PA: PITTSBURGH
RI: PROVIDENCE
SCrBARNWELL
SC: COLUMBIA
SD: PIERRE
TN:KNOXVILLE
TN: NASHVILLE
TX: AUSTIN
TX:EL PASO
UT:SALT LAKE CITY
VA:LTNCHBUR6
WA:OLTMPIA
WA: SPOKANE
WI: MADISON
WV: CHARLESTON
Number
of
Samples
8
9
8
9
8
9
9
9
9
2
9
6
9
9
9
9
9
8
9
9
9
9
5-Hour Field
Estimate
Max Min Avg
(pCi/m8)
1.2 0.2 0.5
0.8 0.1 0.4
0.0 0.0 0.0
0.8 0.1 0.3
1.7 0.4 0.9
0.0 0.0 0.0
1.0 0.1 0.4
0.6 0.4 0.6
0.7 0.1 0.4
0.1 0.0 0.1
0.9 0.0 0.4
1.1 0.2 0.8
1.6 0.2 1.1
2.1 0.3 1.2
0.6 0.1 0.4
1.5 0.1 0.5
1.7 0.6 0.8
1.2 0.2 0.7
0.6 0.1 0.3
1.1 0.3 0.7
1.6 0.1 0.7
1.0 0.0 0.4
NAREL Lab
Measurment
Max Min Avg
(pCi/m8)
0.05 0.02 0.04
0.03 0.00 0.02
0.03 0.01 0.02
0.03 0.00 0.01
0.03 0.01 0.02
0.02 0.01 0.01
0.02 0.00 0.01
0.03 0.00 0.02
0.02 0.01 0.01
0.02 0.02 0.02
0.06 0.02 0.03
0.04 0.02 0.03
0.06 0.01 0.03
0.04 0.02 0.03
0.02 0.01 0.02
0.05 0.01 0.03
0.06 0.03 0.03
0.02 0.00 0.01
0.02 0.00 0.01
0.03 0.01 0.02
0.03 0.01 0.02
0.02 0.01 0.02
* Instrumentation defective,
 Minimum Detectable Limit
 Minimum Detectable Limit
no leading reported.
for field estimates - 0.1 pCi/m8.
for laboratory measurement - 0.01
pCi/m3

-------
             Table 4
Gross Beta in Airborne Participates
           September 1990
Location
AL: MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CA: BERKELEY
CA:LOS ANGELES
CO: DENVER
CT : HARTFORD
DE: WILMINGTON
FL: JACKSONVILLE
FLt MIAMI
HI: HONOLULU
IA:IOWA CITY
ID:BOISE
ID: IDAHO FALLS
IL: CHICAGO
IN: INDIANAPOLIS
KS:TOPEKA
KY: FRANKFORT
LA: NEW ORLEANS
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
NY:YAPHANK
Number
of
Samples
8
8
8
8
8
8
8
7
r
8
6
8
7
8
8
8
8
4
5
8
7
8
7
8
8
8
8
7
8
8
6
8
4
8
8
2
8
5-Hour Field
Estimate
Max Hin Avg
(pCi/m8)
0.2 0.0 0.1
2.4 0.6 1.3
4.2 0.9 2.4
0.3 0.0 0.1
0.6 0.1 0.3
2.9 1.8 2.3
0.4 0.1 0.2
0.7 0.0 0.3
0.4 0.1 0.2
0.2 0.1 0.1
0.4 0.2 0.3
0.9 0.2 0.4
1.2 0.2 0.7
0.0 0.0 0.0
1.1 0.1 0.5
* * +
6.2 2.4 3.5
1.0 0.5 0.7
0.4 0.1 0.3
0.4 0.1 0.3
1.5 0.0 0.7
1.7 0.3 0.9
1.8 0.8 1.3
3.3 0.6 1.3
1.4 0.1 0.6
0.0 0.0 0.0
2.5 0.3 1.1
4.2 0.3 2.1
0.6 0.2 0.4
0.5 0.5 0.5
1.2 0.1 0.7
1.3 0.2 0.7
0.1 0.0 0.1
0.7 0.1 0.3
0.8 0.3 0.5
0.1 0.1 0.1
0.9 0.2 0.5
NAREL Lab
Measurment
Max Min Avg
(pCi/m8)
0.02 0.01 0.02
0.06 0.02 0.04
0.05 0.02 0.03
0.02 0.01 0.01
0.02 0.01 0.02
0.03 0.02 0.03
0.02 0.01 0.01
0.03 0.01 0.02
0.03 0.02 0.02
0.04 0.01 0.02
0.01 0.01 0.01
0.04 0.01 0.02
0.04 0.03 0.03
0.04 0.02 0.03
0.04 0.01 0.02
0.04 0.01 0.03
0.04 0.02 0.03
0.03 0.02 0.03
0.03 0.01 0.02
0.01 0.01 0.01
0.03 0.01 0.02
0.04 0.01 0.03
0.10 0.02 0.04
0.05 0.03 0.04
0.06 0.02 0.04
0.03 0.01 0.02
0.02 0.01 0.01
0.03 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.02
0.02 0.01 0.02
0.06 0.03 0.04
0.01 0.01 0.01
0.02 0.01 0.01
0.04 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.01

-------
                   Table 4 (continued)

         Gross Beta in Airborne Participates
                       September 1990
Location
OH: COLUMBUS
OH:PAINESVILLE
OH: ROSS
OH: TOLEDO
OK: OKLAHOMA CITT
OR PORTLAND
PA:HARRISBUR6
PA PITTSBURGH
RI: PROVIDENCE
SC:BARNWELL
SC: COLUMBIA
SD: PIERRE
TN:KNOXVILLE
TN: NASHVILLE
TX: AUSTIN
TX:EL PASO
UTiSALT LAKE CITT
VAiLYNCHBURG
WA:OLTMPIA
WA: SPOKANE
WI: MADISON
VV: CHARLESTON
Number
of
Samples
6
8
8
8
6
8
8
8
7
2
8
6
7
8
8
8
8
8
8
8
8
7
6-Hour Fi«ld
Estimate
Max Min Avg
(pCi/m8)
0.7 0.2 O.S
0.7 0.2 0.4
0.0 0.0 0.0
1.3 0.1 0.4
1.9 0.3 1.1
0.0 0.0 0.0
1.1 0.2 O.B
0.3 0.3 0.3
0.4 0.1 0.2
0.1 0.1 0.1
0.9 0.3 0.6
1.6 0.3 1.2
2.1 O.S 1.2
2.9 O.S 1.1
0.8 0.1 0.4
1.6 0.0 0.6
1.7 0.1 0.9
2.7 0.1 1.1
0.9 0.4 0.7
1.7 0.4 1.2
2.2 0.4 1.1
2.0 0.1 0.6
NAREL Lab
Measurment
Max Min Avg
(pCi/m3)
0.06 0.02 0.04
0.03 0.01 0.02
0.04 0.02 0.03
0.02 0.01 0.01
0.04 0.01 0.02
0.02 0.01 0.01
0.02 0.01 0.01
0.03 0.01 0.02
0.01 0.01 0.01
0.06 0.03 0.04
0.06 0.02 0.04
0.04 0.02 0.03
0.03 0.02 0.03
0.04 0.02 0.03
0.03 0.00 0.01
0.04 0.01 0.03
0.06 0.02 0.04
0.02 0.01 0.01
0.04 0.01 0.02
0.06 0.01 0.03
0.04 0.01 0.02
0.03 0.02 0.02
* Instrumentation defective,
 Minimum Detectable Limit
 Minimum Detectable Limit
no reading reported.
for field estimates - 0.1 pCi/m8.
for laboratory measurement - 0.01 pCi/m8.

-------
          Table 5
Gross Beta in Precipitation
          July 1990
Location
AL: MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CO '.DENVER
CT: HARTFORD
DE: WILMINGTON
FL: JACKSONVILLE
FL: MIAMI
HI: HONOLULU
IL: CHICAGO
LA: NEW ORLEANS
ME : AUGUSTA
MI: LANSING
MN: MINNEAPOLIS
MO: JEFFERSON CITT
MS: JACKSON
NC: CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
NH: CONCORD
NJ:TRENTON
NM: SANTA FE
NV:LAS VEGAS
NT : ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY : SYRACUSE
NY:YAPHANK
OH:PAINESVILLE
OH: TOLEDO
Depth
(nun)
72.4
42.0
16.0
2.2
76.0
96.0
115.6
107.2
5.0
85.4
43.0
105.6
95.4
115.0
32.0
101.0
34.0
76.2
44.6
54.0
64.4
80.2
11.4
11.0
37.2
56.0
32.0
99.0
64.6
81.0
Act . ±1a
(nCi/m2)
0.16 0.03
0.04 0.01
0.03 0.01
0.02 0.00
0.07 0.03
0.31 0.05
0.17 0.04
0 . 04 0 . 04
0.01 0.00
0.06 0.03
0.09 0.02
0.52 0.06
0.16 0.04
0.11 0.04
0.03 0.01
0.05 0.04
0.06 0.01
0.08 0.03
0.04 0.02
0.27 0.03
0.15 0.03
0.12 0.03
0.01 0.00
0.01 0.00
0.09 0.02
0.05 0.02
0.01 0.01
0.24 0.05
0.10 0.02
0.15 0.03
Specific
Gamma
Activity
(pCi/1)
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 5 (continued)

      Gross Beta in Precipitation
                 July 1990
Location
OK: OKLAHOMA CITY
OR: PORTLAND
PA:HARRISBURG
SC:BARNWELL
SC: COLUMBIA
TN:KNOXVILLE
TN: NASHVILLE
TX : AUSTIN
TX:EL PASO
,,|UT:SALT LAKE CITY
!IVA:LYNCHBURG
WA:OLYMPIA
WI: MADISON
WI: MADISON
WV : CHARLESTON
Depth
(mm)
23.0
24.8
66.0
126.8
75.2
61.0
29.2
40.0
78.2
21.6
78.8
5.6
38.8
38.8
46.0
Act . ±2
-------
          Table 6
Gross Beta in Precipitation
        August 1990
Location
AL : MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CO: DENVER
CT: HARTFORD
DE: WILMINGTON
FL: JACKSONVILLE
FL: MIAMI
ID:BOISE
ID: IDAHO FALLS
IL: CHICAGO
ME: AUGUSTA
MI:LANSING
MN: MINNEAPOLIS
MO: JEFFERSON CITY
MS: JACKSON
NC : CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
NH: CONCORD
NJ: TRENTON
NM: SANTA FE
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY: SYRACUSE
NY:YAPHANK
OH:PAINESVILLE
OH: TOLEDO
OK: OKLAHOMA CITY
Depth
(mm)
42.0
78.6
8.0
7.2
120.0
146.0
152.0
178.2
11.0
28.0
87.6
60.0
32.2
45.8
16.0
32.0
59.0
145.0
28.0
183.0
141.2
70.0
108.0
59.2
83.0
24 0
116.0
81.8
85.0
30.0
Act . ±2
-------
           Table 6 (continued)

      Gross Beta in Precipitation
                August 1990
Location
OR: PORTLAND
PA:HARRISBURG
SC: BARN WELL
SC: COLUMBIA
SO: PIERRE
TN:KNOXVILLE
TN: NASHVILLE
TX:EL PASO
UT:SALT LAKE CITY
VA:LTNCHBURG
WA:OLTMPIA
WI: MADISON
WV: CHARLESTON
Depth
(mm)
10.0
135.2
93.4
75.2
1.0
75.0
24.0
42.0
10.6
40.6
50.2
115.4
77.0
Act . ±2
-------
          Table 7
Gross Beta in Precipitation
       September 1990
Location
AL : MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CA: BERKELEY
CO: DENVER
CT: HARTFORD
DE: WILMINGTON
FL: JACKSONVILLE
FL: MIAMI
HI: HONOLULU
ID:BOISE
ID: IDAHO FALLS
IL: CHICAGO
LA: NEW ORLEANS
ME: AUGUSTA
MI:LANSING
MN: MINNEAPOLIS
MO: JEFFERSON CITY
MS: JACKSON
NC : CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
NH: CONCORD
NJ:TRENTON
NM: SANTA FE
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY : SYRACUSE
Depth
(mm)
27.0
102.6
22.0
3.0
44.0
53.0
68.0
41.4
60.8
21.2
18.0
6.2
64.4
43.0
88.0
100.0
34.0
16.0
42.0
53.0
42.0
47.0
56.2
32.6
26.0
3.0
23.0
28.6
41.0
8.0
Act. ±2
-------
         Table 7 (continued)

    Gross Beta in Precipitation
            September 1990
Location
NY:YAPHANK
OH:PAINESVILLE
OH: TOLEDO
OR: PORTLAND
PA:HARRISBURG
RI: PROVIDENCE
SC: COLOMBIA
SD: PIERRE
TNtKNOXVILLE
TN : NASHVILLE
TX: AUSTIN
TX:EL PASO
OT:SALT LAKE CITY
VA:LYNCHBURG
WI: MADISON
WV: CHARLESTON
Depth
(mm)
33.0
99.0
61.0
12.6
40.4
8.0
42.0
2.0
66. 0
56.0
40.0
49.0
13.8
46.4
46.0
41.0
Act . ±2tr
(nCi/mJ)
0.11 0.02
0.14 0.03
0.06 0.02
0.02 0.01
0.16 0.02
0.02 0.00
0.08 0.02
0.00 0.00
0.07 0.02
0.06 0.02
0.03 0.01
0.06 0.02
0.03 0.01
0.33 0.03
0.06 0.02
0.16 0.02
Specific
Gamma
Activity
(pCi/1)
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
a  = Counting Error.
NA = Not Analyzed.
ND = No Gamma Activity Detectable.
                   13

-------
        Table 8
Tritium in Precipitation
   July - September 1990
Location
AL : MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CA: BERKELEY
CO: DENVER
CT: HARTFORD
DE: WILMINGTON
FL: JACKSONVILLE
FL: MIAMI
HI: HONOLULU
ID:BOISE
ID: IDAHO FALLS
IL: CHICAGO
LA: NEW ORLEANS
ME: AUGUSTA
MI:LANSING
MN: MINNEAPOLIS
MO: JEFFERSON CITY
MS: JACKSON
NC : CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
NH: CONCORD
NJ: TRENTON
NM: SANTA FE
NV:LAS VEGAS
NY: ALBANY
NY: NEW YORK CITY
NY: NIAGARA FALLS
NY: SYRACUSE
NY:YAPHANK
OH:PAINESVILLE
OH: TOLEDO
OK: OKLAHOMA CITY
OR: PORTLAND
PA:HARRISBURG
RI: PROVIDENCE
July 1990
nCi/1 ±2
-------
              Table 8 (continued)

           Tritium in Precipitation
              July - September 1990
Location
SC:BARNWELL
SC: COLUMBIA
SD: PIERRE
TN:KNOXVILLE
TN: NASHVILLE
TX: AUSTIN
TX:EL PASO
UTrSALT LAKE CITY
VA:LYNCHBUR6
WA:OLYMPIA
WI: MADISON
WV: CHARLESTON
July 1990
nCi/1 ±2
-------
                   Plutonium and Uranium in Airborne Particulates and Precipitation

    Environmental radiation levels  of plutonium and  uranium are determined  by the analysis of semi-
annually composited samples  (air filters) collected from the  continuously operating  airborne particulate
samplers.
    Concentration of the specific isotopes of plutonium-238, -239, and -240 and uranium-234, -235, and
-238 are determined by alpha spectroscopy following chemical separation.  The volume of air represented by
the semiannual composite ranges from 25,000 to 40,000  cubic meters.
    Plutonium and uranium results  are published when they become available.
                                                 16

-------
                                             Krypton-85

    Krypton-86 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 NAREL 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.
                                                  17

-------
                                                                                        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 68 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.  Gamma
scans are performed annually to  determine levels of gamma emitting radionuclides.
    Table 9 contains the data for tritium concentrations for July   September 1990.
                                                 18

-------
         Table 9
Tritium in Surface Water
   July - September 1990
Location
AL:DECATUR
AL: DOTH AN
AL:SCOTTSBORO
AR: LITTLE ROCK
CA: DIABLO CANTON
CA: EUREKA
CA:SAN ONOFRE
COrPLATTEVILLE
CT:EAST HADDAM
CT:WATERFORO
PL: CRYSTAL RIVER
FL:FT. PIERCE
FL: HOMESTEAD
GArBAXLEY
IA: CEDAR RAPIDS
ID: BUHL
IL:E. NOLINE
IL: MORRIS
IL:ZION
KS:LEROT
LA: NEW ORLEANS
MA: PLYMOUTH
HD:CONOWINGO
MD:LUSBT
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
HJ.-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
ALTAMAHA RIVER
CEDAR RIVER
SNAKE RIVER
MISSISSIPPI RIVER
ILLINOIS RIVER
LAKE MICHIGAN
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
07/04/90
07/12/90
07/05/90
07/19/90
09/26/90
07/19/90
08/23/90
07/09/90
07/16/90
07/16/90
07/09/90
07/11/90
07/11/90
07/16/90
07/12/90
07/11/90
07/05/90
08/06/90
08/15/90
05/15/90
07/30/90
07/05/90
07/10/90
07/09/90
07/10/90
07/17/90
07/13/90
07/23/90
07/17/90
07/18/90
07/24/90
07/03/90
07/16/90
07/05/90
07/17/90
07/17/90
07/19/90
nCi/1 ±2
-------
               Table 9 (continued)
            Tritium in Surface Water
               July - September 1990
Location
NV: BOULDER CITY
NT : CHELSEA
NY:OSSINING
NY : OSWEGO
OH : TOLEDO
OR:BRADWOOD
PA: DANVILLE
PA: PHILADELPHIA
PA: PHILADELPHIA
PA: PHILADELPHIA
SC:ALLENDALE
SC: BROAD RIVER
SC:HARTSVILLE
TN: DAISY
TN: KINGSTON
TX:MATAGORDA
VA:DOSWELL
VA: NEWPORT NEWS
VT : VERNON
WA : NORTHPORT
WA:RICHLAND
VI: TWO CREEKS
WI: VICTORY
WV: WHEELING
Source
COLORADO RIVER
HUDSON RIVER
HUDSON RIVER
LAKE ONTARIO
LAKE ERIE
COLUMBIA RIVER
SUSQUEHANNA RIVER
DELAWARE RIVER-BAXTER
SCHUYLKILL RIVER-QUEEN
SCHUYLKILL RIVER-BELMONT
SAVANNAH RIVER
BROAD RIVER
LAKE ROBINSON
TENNESSEE RIVER
CLINCH RIVER
COLORADO RIVER
NORTH ANNA RIVER
JAMES RIVER
CONNECTICUT RIVER
COLUMBIA RIVER
COLUMBIA RIVER
LAKE MICHIGAN
MISSISSIPPI RIVER
OHIO RIVER
Data
Collected
08/03/90
07/05/90
08/02/90
08/01/90
07/01/90
07/23/90
07/03/90
07/12/90
07/12/90
07/12/90
07/30/90
07/05/90
07/16/90
07/10/90
08/15/90
08/08/90
07/27/90
07/23/90
07/26/90
07/19/90
09/11/90
07/16/90
07/06/90
07/11/90
nCi/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 radium-226 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  (e) an annual composite for plutonium-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 10 contains the data in drinking water for July -  September 1990.  Table 11 contains the 1-131
in drinking water results for January - December 1990.
                                                  21

-------
         Table 10
Tritium in Drinking Water
    July -  September 1990
Location
AK:FAIRBAHKS
AL:DOTHAN
AL: MONTGOMERY
AL: MUSCLE SHOALS
ALtSCOTTSBORO
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
MD: BALTIMORE
MD:CONOWINGO
ME: AUGUSTA
MI: DETROIT
MI: GRAND RAPIDS
MN: MINNEAPOLIS
MN:RED WING
MO: JEFFERSON CITY
MS: JACKSON
MS: PORT GIBSON
MT: HELEN A
NC: CHARLOTTE
NC:WILMINGTON
ND: BISMARCK
NE: LINCOLN
Date
Collected
07/06/90
07/12/90
07/10/90
07/04/90
07/05/90
07/19/90
07/03/90
07/05/90
07/09/90
07/09/90
07/05/90
07/06/90
07/02/90
07/06/90
07/13/90
07/16/90
09/11/90
07/OE/90
07/12/00
07/05/90
07/15/90
07/09/90
07/02/90
07/05/90
07/11/90
07/10/90
07/03/90
07/10/90
07/11/90
08/24/90
07/17/90
07/19/90
07/11/90
07/02/90
07/03/90
07/05/90
07/12/90
07/16/90
07/05/90
07/03/90
07/02/90
nCi/1 ±2ff
0.1 0.2
0.1 0.2
0.1 0.2
0.4 0.2
0.1 0.2
0.3 0.2
0.1 0.2
0.1 0.2
0.2 0.2
0.2 0.2
0.1 0,2
0.1 0.2
0.3 0.2
0.1 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.1 0.2
0.1 0.2
0.1 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.1 0.2
0.2 0.2
0.3 0.2
0.2 0.2
0.1 0.2
0.2 0.2
0.2 0.2
0.1 0.2
0.2 0.2
0.3 0.2
0.1 0.2
0.2 0.2
0.2 0.2
0.4 0.2
0.1 0.2
0.3 0.2
0.2 0.2
             22

-------
       Table 10 (continued)
   Tritium in Drinking Water
       July - September 1990
Location
NH: CONCORD
NJ: TRENTON
NJrWARETOWN
NN: SANTA FE
NViLAS VEGAS
NT: 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:P'DELPHIA-BAXTER
PA:P'DELPHIA-QUEEN
PA: PHILADELPHIA
PA: PITTSBURGH
PC : COROZAL
RI: PROVIDENCE
SC:BARNUELL
SC: COLUMBIA
SC:HARTSVILLE
SC : JENKINSVILLE
SC: SENECA
TN : CHATTANOOGA
TN:KNOXVILLE
TX: AUSTIN
VA:DOSWELL
VA:LYNCHBURG
VA: VIRGINIA BEACH
WA:RICHLAND
WA : SEATTLE
HI: GENOA CITY
WI: MADISON
Date
Collected
07/06/90
07/19/90
07/OB/90
07/03/90
07/05/90
07/02/90
07/12/90
07/06/90
08/17/90
09/28/90
07/17/90
08/08/90
07/26/90
07/03/90
07/06/90
07/03/90
07/05/90
07/06/90
07/12/90
07/12/90
07/12/90
08/08/90
07/03/90
07/23/90
07/05/90
07/03/90
07/16/90
08/10/90
07/18/90
08/06/90
07/03/90
07/23/90
07/10/90
07/03/90
07/10/90
09/11/90
07/02/90
07/02/90
07/03/90
nCi/1 ±2
-------
          Table 11
Iodine-131 in Drinking Water
    January - December 1990
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:BAXLEY
GA: SAVANNAH
HI: HONOLULU
IA: CEDAR RAPIDS
ID:BOISE
ID: IDAHO FALLS
IL:W. CHICAGO
KS:TOPEKA
LA: NEW ORLEANS
MA: LAWRENCE
MD: BALTIMORE
MD:CONOWINGO
MD:CONOWINGO
ME: AUGUSTA
MI: DETROIT
MI: GRAND RAPIDS
MN: MINNEAPOLIS
MN:RED WING
MO: JEFFERSON CITY
MS: JACKSON
MS: PORT GIBSON
MT: HELEN A
NC : CHARLOTTE
NC: WILMINGTON
ND: BISMARCK
Date
Collected
01/11/90
10/09/90
11/02/90
10/03/90
10/03/90
10/03/90
10/03/90
10/04/90
10/01/90
10/09/90
10/02/90
11/02/90
10/03/90
01/03/90
07/13/90
07/16/90
09/11/90
10/26/90
07/12/90
10/15/90
07/15/90
10/02/90
10/01/90
01/11/90
07/10/90
10/02/90
01/02/90
07/10/90
10/09/90
10/03/90
01/11/90
07/19/90
07/11/90
10/09/90
01/02/90
01/02/90
07/12/90
07/16/90
10/04/90
01/02/90
pCi/1 ±2
-------
      Table 11 (continued)
 Iodine-131 in Drinking Water
     January - December81990
Location
HE: LINCOLN
NH: CONCORD
NJ:TRENTON
NJ:WARETOWN
NH: SANTA FE
NV:LAS VEGAS
NT: 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: PHILADELPHIA
PA PHILADELPHIA
PA PHILADELPHIA
PA PITTSBURGH
RI: PROVIDENCE
SC-.BARNVELL
SC: COLUMBIA
SCtHARTSVILLE
SC:JENKINSVILLE
SC: SENECA
TN: CHATTANOOGA
TN:KNOXVILLE
TX: AUSTIN
VA:DOSWELL
VA:LYNCHBURG
VA: VIRGINIA BEACH
WA:RICHLAND
WA: SEATTLE
VI -.GENOA CITY
WI: MADISON
Date
Collected
10/01/90
10/11/90
07/19/90
10/04/90
10/04/90
10/05/90 •
10/09/90
07/12/90
01/09/90
10/16/90
01/03/90
11/1S/90
11/02/90
10/05/90
10/03/90
10/26/90
01/03/90
10/11/90
01/04/90
10/15/90
10/15/90
10/15/90
11/02/90
07/23/90
10/08/90
01/02/90
07/16/90
10/12/90
07/18/90
11/01/90
01/02/90
07/23/90
07/10/90
01/02/90
01/03/90
09/11/90
10/05/90
10/09/90
10/05/90
pCi/1 ±2 0.1
-0.1 0.3
0.3' 0.1
0.0 0.1
-0.2 0.2
-0.3 0.1
'-0.5 0.5
0.2 0.1
0.0 0.2
-0.1 0.1
-0.1 0.3
0.0 0.2
0.3 0.1
0.0 0.0
-0.1 0.1
0.2 0.1
0.2 0.1
0.0 0.1
0.2 0.1
0.4 0.2
0.1 0.1
0.1 0.1
0.0 0.1
0.1 0.1
-0.1 0.1
0.1 0.1
0.5 0.1
0.1 0.1
0.0 0.0
-0.2 0.1
-0.3 0.1
0.1 0.4
0.0 0.2
0.0 0.1

-------
                                                                                       DATA - EPA
                                 ENVIRONMENTAL RADIATION
                           AMBIENT MONITORING SYSTEM (ERAMS)


    Section III. 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 NAREL 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.
    Publication of EGAMP data has been temporarily suspended until problems with the data are resolved.
    Some of these sites may not return dosimeters each period and consequently the number of sites listed may vary slightly.

                                                26

-------
                                                                                       DATA - EPA


                                 ENVIRONMENTAL RADIATION
                           AMBIENT MONITORING SYSTEM (ERAMS)


    Section IV. Milk Program

                                          Pasteurized Milk

    This is a cooperative program with the Dairy and Lipid Products Branch, Milk Sanitation Section, Food
and Drug Administration.  Milk is a reliable indicator of the general population's intake of radionuclides
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 strontium-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 strontium-90 are determined by  beta counting a total strontium  precipitate that has been
chemically separated by ion exchange.
    Tables 12-14 contain the concentrations of radionuclides in pasteurized milk for July - September  1990.
The last Strontium-90  and Strontium-89 in Milk results were published in Environmental Radiation Data:
Report 60.
                                                 27

-------
            Table 12
Radionuclides in Pasteurized Milk
             July 1990
Location
AL: MONTGOMERY
AR: LITTLE ROCK
AZ: PHOENIX
CA:LOS ANGELES
CA: SACRAMENTO
CO: DENVER
CT: HARTFORD
DE: WILMINGTON
FL: TAMPA
GA: ATLANTA
HI: HONOLULU
IA:DES MOINES
ID: IDAHO FALLS
IL: CHICAGO
IN: INDIANAPOLIS
KS: WICHITA
KY: LOUISVILLE
LA: NEW ORLEANS
MA: BOSTON
MD: BALTIMORE
ME: PORTLAND
MI: DETROIT
MI: GRAND RAPIDS
MO: KANSAS CITY
MO: ST. LOUIS
MS: JACKSON
MT: HELENA
NC : CHARLOTTE
ND:MINOT
NE: OMAHA
NJ:TRENTON
NM : ALBUQUERQUE
NV:LAS VEGAS
NY: BUFFALO
NY: NEW YORK CITY
NY: SYRACUSE
OH: CINCINNATI
Dat«
Collected
07/05/90
07/03/90
07/05/90
07/18/90
07/03/90
07/31/90
07/02/90
07/11/90
07/11/90
07/16/90
07/02/90
07/09/90
07/31/90
07/05/90
07/03/90
07/15/90
07/03/90
07/13/90
07/07/90
07/06/90
07/03/90
07/05/90
07/03/90
07/12/90
07/11/90
07/10/90
07/09/90
07/09/90
07/30/90
07/03/90
07/03/90
07/03/90
07/13/90
07/30/90
07/02/90
07/03/90
07/31/90
K
g/1 ±2
-------
                     Table 12 (continued)

             Radionuclides in Pasteurized Milk
                            July 1990
Location
OH -.CLEVELAND
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
WA : SEATTLE
WA: SPOKANE
WV : CHARLESTON
Date
Collected
07/17/90
07/02/90
07/03/90
07/02/90
07/09/90
07/19/90
07/09/90
07/31/90
07/02/90
07/09/90
07/10/90
07/17/90
07/23/90
07/02/90
07/31/90
07/03/90
07/10/90
07/10/90
K
g/1 ±2
-------
            Table 13
Radionuclides in Pasteurized Milk
            August 1990
Location
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
IA:DES MOINES
IL: CHICAGO
IN: INDIANAPOLIS
KS:WICHITA
KY: LOUISVILLE
LA: NEW ORLEANS
MA: BOSTON
MD: BALTIMORE
ME: PORTLAND
MI: DETROIT
MI: GRAND RAPIDS
MO:KANSAS CITY
MO: ST. LOUIS
MS: JACKSON
MT: HELENA
NC: CHARLOTTE
ND:MINOT
NE: OMAHA
NJ:TRENTON
NM: ALBUQUERQUE
NV:LAS VEGAS
NY: BUFFALO
NY: NEW YORK CITY
NY: SYRACUSE
OH: CINCINNATI
Date
Collected
08/08/90
08/21/90
08/09/90
08/09/90
08/01/90
08/02/90
08/20/90
08/07/90
08/1B/90
08/14/90
08/13/90
08/07/90
08/06/90
08/09/90
08/03/90
08/29/90
08/07/90
08/14/90
08/13/90
08/10/90
08/01/90
08/08/90
08/13/90
08/16/90
08/08/90
08/08/90
08/07/90
08/13/90
08/28/90
08/09/90
08/08/90
08/28/90
08/08/90
08/21/90
08/06/90
08/06/90
08/29/90
K
g/1 ±2(7
1.64 0.12
1.56 0.22
1.64 0.12
1.64 0.16
1.66 0.12
1.64 0.22
1.57 0.12
1.56 0.12
1.68 0.12
1.77 0.13
1.56 0.08
1.40 0.22
1.63 0.08
1.62 0.12
1.72 0.12
1.79 0.13
1.59 0.12
1.63 0.07
1.55 0.16
1.69 0.08
1.60 0.12
1.67 0.09
1.63 0.12
1.80 0.13
1.66 0.09
1.60 0.12
1.61 0.12
1.58 0.12
1.65 0.12
1.55 0.12
1.64 0.08
1.58 0.12
1.35 0.22
1.74 0.13
1.65 0.12
1.66 0.22
1.73 0.13
187CB
pCi/1 ±2(7
3 6
4 14
6 7
6 10
7 7
2 14
2 6
9 7
1 6
6 7
7 5
-8 13
4 5
4 7
6 7
5 7
7 7
6 4
-2 10
3 5
6 7
4 5
2 6
7 7
3 5
5 7
2 6
7 7
3 7
6 7
7 5
6 7
-7 13
2 7
1 6
7 14
-4 6
140Ba
pCi/1 ±2cr
-7 8
-7 19
5 8
3 13
1 8
-17 19
3 8
4 8
-3 8
-6 8
2 6
0 19
-1 6
-1 8
3 8
-4 8
1 8
0 5
-7 13
-2 6
2 8
-3 6
-3 8
0 8
3 6
3 8
0 8
3 8
2 8
1 8
4 6
-6 8
-9 19
4 8
0 8
-12 19
2 8
131 j
pCi/1 ±2(7
0 7
-4 14
7 7
8 10
4 7
3 14
4 7
B 7
5 7
3 7
2 5
-4 14
2 5
2 7
8 7
0 7
6 7
4 4
6 10
-1 5
-6 7
1 5
-1 7
9 7
-2 5
4 7
-1 7
4 7
0 7
5 7
2 5
2 7
0 14
2 7
1 7
1 14
2 7
                30

-------
                     Table 13 (continued)

             Radionuclides in Pasteurized Milk
                           August 1990
Location
OH: CLEVELAND
OK: OKLAHOMA CITT
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:MONTPELIER
WA: SEATTLE
WA: SPOKANE
WV: CHARLESTON
Date
Collected
08/28/90
08/27/90
08/09/90
08/06/90
08/08/90
08/30/90
08/09/90
08/20/90
08/08/90
08/06/90
08/06/90
08/22/90
08/14/90
08/01/90
08/29/90
08/09/90
08/08/90
08/06/90
08/13/90
K
g/1 ±2(7
1.43 0.22
1.62 0.08
1.64 0.22
1.77 0.09
1.59 0.12
1.42 0.22
1.64 0.12
1.72 0.10
1.B8 0.08
1.52 0.22
1.68 0.12
1.67 0.12
1.62 0.12
1.35 0.07
1.69 0.22
1.35 0.22
1.14 0.06
1.52 0.12
1.50 0.22
187Cs
pCi/1 ±2
-------
            Table 14
Radionuclides in Pasteurized Milk
          September 1990
Location
AR: LITTLE ROCK
AZ: PHOENIX
CA:LOS ANGELES
CA: SACRAMENTO
CA:SAN FRANCISCO
CO: DENVER
DE: WILMINGTON
FL: TAMPA
GA: ATLANTA
HI: HONOLULU
IA:DES MOINES
ID: IDAHO FALLS
IL:CHICAGO
IN: INDIANAPOLIS
KS:WICHITA
K7: LOUISVILLE
MD: BALTIMORE
ME: PORTLAND
MI: DETROIT
MI: GRAND RAPIDS
MN:ST. PAUL
MO: ST. LOUIS
MS: JACKSON
MT : HELENA
NC : CHARLOTTE
ND:MINOT
NJ:TRENTON
NV:LAS VEGAS
NY: BUFFALO
NY: NEW YORK CITY
NY: SYRACUSE
OH: CINCINNATI
OH: CLEVELAND
OR: PORTLAND
PA PHILADELPHIA
PA : PITTSBURGH
PC: CRISTOBAL
Date
Collected
09/03/90
09/06/90
09/14/90
09/05/90
09/10/90
09/24/90
09/19/90
09/11/90
09/17/90
09/09/90
09/05/90
09/05/90
09/06/90
09/04/90
09/18/90
09/04/90
09/13/90
09/05/90
09/13/90
09/04/90
09/06/90
09/04/90
09/11/90
09/07/90
09/13/90
09/25/90
09/04/90
09/28/90
09/24/90
09/10/90
09/11/90
09/27/90
09/18/90
09/06/90
09/04/90
09/04/90
09/27/90
K
g/1 ±2
-------
                    Table 14 (continued)

            Radionuclides in Pasteurized Milk
                        September 1990
Location
PR: SAN JUAN
SD: RAPID CITY
TN : CHATTANOOGA
TN:KNOXVILLE
TX: AUSTIN
TX:FT. WORTH
VA: NORFOLK
VT: BURLINGTON
WA : SEATTLE
WA: SPOKANE
WV: CHARLESTON
Date
Collected
09/07/90
09/04/90
09/04/90
09/10/90
09/13/90
09/04/90
09/27/90
09/14/90
09/05/90
09/11/90
09/18/90
K
g/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. The pasteurized milk is freeze-dried and the resulting powder is pelletized for ease of combustion.
Analysis consists of combusting the samples and converting the released carbon dioxide through a series of
chemical conversions to benzene and finally measured by liquid scintillation.
    The samples undergo three main steps in the chemical conversions to benzene prior to liquid scintillation
counting. They include (1) combustion of the sample to carbon dioxide, (2) conversion of the carbon dioxide
to acetylene, and (3) trimerizations of the acetlyene to benzene. The last carbon-14 results were for samples
collected during 1983-1986. 1982 and March-May 1987. They were published in Environmental Radiation
Data: Report 59.
                                                 34

-------
    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:

                                         Charles M. Petko
                                        Office of the Director
                        National Air and Radiation Environmental Laboratory
                                          1504 Avenue A
                                 Montgomery, Alabama 36115-2601

    Requests for information concerning the operation of ERAMS should be directed to:

                                     Albert  Smith, Acting Chief
                              Monitoring and Analytical Services Branch
                        National Air and Radiation Environmental Laboratory
                                          1504 Avenue A
                                 Montgomery, Alabama 36115-2601
                                               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
                                                *+*

-------