402-R-10-005
ENVIRONMENTAL
RADIATION
DATA
REPORT 141
January - March 2010
United States Environmental Protection Agency
Office of Radiation and Indoor Air
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11
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Contents
Page
List of Tables v
Preface vii
Acknowledgments ix
Data Reporting Conventions xi
1. Air Program 1
Airborne Particulates and Precipitation 1
Plutonium and Uranium in Airborne Particulates 15
2. Water Program 17
3. Milk Program 21
Pasteurized Milk 21
in
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IV
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List of Tables
Table Page
1 Reporting Units and Minimum Detectable Concentrations xiii
2 Gross Beta in Airborne Particulates: January 2010 2
3 Gross Beta in Airborne Particulates: February 2010 5
4 Gross Beta in Airborne Particulates: March 2010 8
5 Specific Gamma in Precipitation: January 2010 11
6 Specific Gamma in Precipitation: February 2010 12
7 Specific Gamma in Precipitation: March 2010 13
8 Tritium in Precipitation: January - March 2010 14
9 Tritium in Drinking Water: January - March 2010 18
10 Radionuclides in Pasteurized Milk: January-March 2010 22
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VI
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Preface
Environmental Radiation Data(EKD) is compiled and published quarterly by the Office of
Radiation and Indoor Air's National Air and Radiation Environmental Laboratory (NAREL) in
Montgomery, Alabama, and contains data from the RadNet monitoring system (formerly
ERAMS). ERD is published in both hard-copy and electronic formats. Electronic reports are
available online atwww.epa.gov/narel.
The United States Environmental Protection Agency established RadNet in 1973 with an
emphasis on identifying trends in the accumulation of long-lived radionuclides in the environ-
ment. RadNet is comprised of a nationwide network of sampling stations that provide air
particulate, precipitation, drinking water, and milk samples.
Sampling locations are selected to provide population and geographic coverage for the United
States. The radiation analyses performed on these samples include gross alpha and gross beta
analysis, gamma analyses, and radionuclide-specific analyses for uranium, plutonium, strontium,
iodine, radium, 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 NAREL to analyze the RadNet samples are contained in
the NAREL Radiochemistry Procedures Manual. Station operation and sample collection are in
accordance with procedures contained in the ERAMSManital(EPA 520/5-84-007, 008, 009).
vn
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Vlll
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Acknowledgments
All sampling for the RadNet monitoring system (formerly ERAMS) is performed by volunteer
collectors who are frequently members of health departments or related environmental agencies
of their respective states. The National Air and Radiation Environmental Laboratory (NAREL),
on behalf of the U.S. Environmental Protection Agency, would like to acknowledge the time and
effort of these volunteer collectors, who are so essential to the successful operation of RadNet.
The efforts of the sample collectors are especially appreciated during times of emergency
operation when sampling frequencies are increased and schedules are sometimes demanding.
IX
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Data Reporting Conventions
Every laboratory measurement involves uncertainty. When there is little or no radioactivity in a
sample, one consequence of measurement uncertainty is the possibility of obtaining a measured
value that is less than zero. Such a negative result occurs when random effects in the measure-
ment process cause the measured value for the sample to be less than that of the blank or back-
ground, which is subtracted from it. From April 1991 to December 1995, negative results were
reported as "not detected" or "ND," and gamma analysis results that were less than their
estimated measurement uncertainties were also reported as "ND." In January 1996, both of these
practices were discontinued. Although negative activities are physically impossible, the inclusion
of negative results in the report allows better statistical analysis of the data.
Results of gamma analyses are still reported as "ND" when gamma-emitting radionuclides are
not detected.
Measurement Uncertainty
Each measured valuers reported with an expanded uncertainty U=k uc(y), which is determined
from the combined standard uncertainty uc(y) and the coverage factor k=2. The interval from
y - Utoy + Uis estimated to have a level of confidence of approximately 95 %.
Significant Figures
Expanded uncertainties are reported to two significant figures. Measurement results are rounded
to the corresponding number of decimal places.
Detection Capability
The minimum detectable concentrations (MDCs) for each radionuclide are shown in Table 1.
The MDC is defined as the minimum concentration that gives a 95 % probability of detection
when the detection criteria are chosen to give only a 5 % probability of false detection in a
sample that is analyte-free.
XI
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xn
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Table 1
Reporting Units and Minimum Detectable Concentrations
for Radionuclide Analyses
Radionuclide
Gross Alpha
Gross Beta
Tritium
* Plutonium-23 8,23 9/240
f Uranium-234,235,238
Radium-226
Strontium-90
{ Iodine-131
Cesium- 137
{ Barium-140
Potassium
Potassium-40
Media
Water
Air
Water
Precipitation
Water
Milk
Air
Water
Air
Water
Water
Milk
Water
Milk (gamma)
Water (gamma)
Water
Milk
Water
Milk
Water
Milk
Water
Water
Reporting Unit
pCi/L
pCi/m3
pCi/L
pCi/L
pCi/L
pCi/L
aCi/m3
pCi/L
aCi/m3
pCi/L
pCi/L
pCi/L
pCi/L
pCi/L
pCi/L
pCi/L
pCi/L
pCi/L
pCi/L
pCi/L
g/L
g/L
pCi/L
Minimum
Detectable
Concentration
2
0.0015
2
2
150
150
0.75
0.1
0.75
0.1
0.02
2
1
4
4
0.3
5
5
15
15
0.06
0.06
50
* The MDC for air is based on an assumed total sample volume of 120,000 m3. Measurement by alpha
spectrometry includes combined activities of 239Pu and 240Pu, since the relative contributions of these two
isotopes cannot be determined.
f The MDC for air is based on an assumed total sample volume of 120,000 m3.
J Activity as of the day of counting.
Xlll
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xiv
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1. Air Program
Airborne Particulates and Precipitation
Gross beta radioactivity measurements and certain specific analyses are performed on air
particulates as indicator measurements in assessing the general (national) impact of all
contributing sources on environmental levels of radiation. Airborne particulates are collected
continuously at field stations representing wide geographic coverage throughout the United
States.
Filters (10-cm diameter synthetic fiber) from air samplers are changed twice weekly and field
measurements are made with a dual-phosphor scintillation counter 5 hours after collection to
allow natural radon isotopes and their progeny to 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 analysis in a low background proportional
counter. Gamma scans are performed on all filters showing gross beta activity greater than
1 pCi/m3. The laboratory obtained values are usually lower than the field estimates because of
the decay of naturally occurring radionuclides during the time between the two measurements.
All stations routinely submit precipitation samples as rainfall, snow, or sleet occurs. The
precipitation samples are composited at NAREL into single monthly samples for each station.
Each month that precipitation occurs, an aliquant of the composited sample is analyzed for
tritium and gamma-emitting radionuclides. NAREL has discontinued gross beta analysis of
precipitation.
A compilation of individual measurements is available from the National Air and Radiation
Environmental Laboratory, 540 South Morris Avenue, Montgomery, AL 36115-2601.
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Table 2
Gross Beta in Airborne Particulates
January 2010
Location
AK: Fairbanks
AL: Birmingham
AL: Montgomery/408
AR: Little Rock
AZ: Phoenix
AZ: Phoenix/956
AZ: Tucson
CA: Anaheim
CA: Bakersfield
CA: Eureka
CA: Los Angeles
CA: Richmond
CA: Riverside
CA: Sacramento
CA: San Bernardino Cty.
CA: San Diego
CA: San Francisco
CA: San Jose
CO: Colorado Springs
CO: Denver
CT: Hartford
DC: Washington
DE: Dover
FL: Jacksonville
FL: Orlando
FL: Tallahassee
GA: Augusta
HI: Hilo
HI: Honolulu
IA: Des Moines
IA: Mason City
ID: Idaho Falls
IL: Aurora
IL: Chicago
IN: Indianapolis
KS: Kansas City
KS: Topeka
KY: Lexington
Number
of
Samples
8
7
8
6
7
8
8
3
7
4
7
4
8
8
8
2
4
4
3
8
8
8
4
3
8
3
4
8
8
7
6
4
8
1
8
3
4
8
5-hour Field
Estimate
Max Min Avg
(pCi/m3)
0.0 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
0.1 -0.0 0.0
1.3 0.1 0.5
1.0 0.0 0.5
0.1 0.0 0.0
0.0 0.0 0.0
0.5 0.0 0.1
0.0 -0.0 0.0
0.4 0.0 0.1
0.4 0.0 0.2
0.1 0.0 0.0
0.3 0.0 0.1
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.3 0.0 0.1
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.1
0.0 0.0 0.0
0.1 0.0 0.0
0.0 -0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.1
0.1 0.0 0.0
NAREL Lab
Measurement
Max Min Avg
(pCi/m3)
0.022 0.010 0.016
0.024 0.007 0.017
0.049 0.010 0.021
0.035 0.007 0.018
0.040 0.004 0.022
0.044 0.004 0.027
0.018 0.002 0.009
0.007 0.002 0.005
0.044 0.002 0.019
0.000 0.000 0.000
0.018 0.001 0.010
0.028 0.002 0.011
0.016 0.001 0.007
0.033 0.002 0.015
0.020 0.002 0.010
0.010 0.008 0.009
0.016 0.003 0.009
0.022 0.003 0.011
0.013 0.008 0.011
0.011 0.006 0.008
0.016 0.002 0.009
0.008 0.002 0.006
0.013 0.005 0.007
0.011 0.008 0.009
0.017 0.007 0.011
0.010 0.007 0.009
0.013 0.007 0.011
0.006 0.003 0.005
0.005 0.003 0.004
0.024 0.009 0.014
0.187 0.013 0.045
0.015 0.009 0.012
0.037 0.013 0.022
0.014 0.014 0.014
0.017 0.009 0.013
0.028 0.012 0.018
0.049 0.013 0.023
0.018 0.006 0.012
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Table 2 (continued)
Gross Beta in Airborne Particulates
January 2010
Location
LA: Baton Rouge
LA: Shreveport
MA: Worcester
MD: Baltimore
ME: Orono
ME: Portland
MI: Bay City 48708
MI: Detroit
MN: Duluth
MN: St. Paul
MN: Welch/510
MO: Jefferson City
MO: Springfield
MO: St. Louis
MS: Jackson
MS: Jackson/Deq
MT: Billings
NC: Charlotte
NC: Wilmington
ND: Bismarck
NE: Kearney
NE: Lincoln
NE: Omaha
NJ: Edison
NJ: Trenton
NM: Carlsbad
NM: Santa Fe
NV: Las Vegas/9 13
NY: Albany
NY: Hauppauge
NY: Lockport
NY: Rochester
NY: Yaphank
OH: Cincinnati
OH: Cleveland
OH: Painesville
OK: Oklahoma City
OR: Portland
Number
of
Samples
8
7
6
8
3
8
6
8
5
4
7
6
8
1
4
8
3
8
4
4
8
6
4
7
8
4
7
8
8
7
8
8
5
8
8
5
5
8
5-hour Field
Estimate
Max Min Avg
(pCi/m3)
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 -0.0 0.0
0.0 -0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
-0.1 -0.1 -0.1
0.1 0.0 0.1
0.1 0.0 0.1
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.1 0.1 0.1
0.2 0.0 0.1
0.0 0.0 0.0
0.0 -0.0 0.0
0.3 0.0 0.1
4.5 0.0 1.2
0.3 0.0 0.1
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.2 0.0 0.1
0.1 0.0 0.0
NAREL Lab
Measurement
Max Min Avg
(pCi/m3)
0.011 0.006 0.008
0.017 0.007 0.011
0.010 0.002 0.007
0.014 0.005 0.009
0.012 0.007 0.010
0.010 0.001 0.006
0.017 0.004 0.011
0.018 0.005 0.012
0.019 0.007 0.013
0.016 0.008 0.013
0.038 0.013 0.025
0.017 0.007 0.012
0.025 0.011 0.017
0.013 0.013 0.013
0.026 0.010 0.021
0.019 0.007 0.013
0.055 0.025 0.037
0.029 0.006 0.012
0.010 0.006 0.008
0.018 0.011 0.014
0.036 0.010 0.016
0.025 0.008 0.017
0.032 0.011 0.022
0.014 0.003 0.007
0.016 0.005 0.010
0.027 0.004 0.017
0.031 0.005 0.016
0.015 0.002 0.008
0.034 0.004 0.015
0.017 0.005 0.011
0.020 0.004 0.010
0.011 0.003 0.007
0.007 0.002 0.004
0.016 0.007 0.011
0.019 0.007 0.012
0.019 0.008 0.014
0.016 0.009 0.013
0.031 0.003 0.011
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Table 2 (continued)
Gross Beta in Airborne Particulates
January 2010
Location
PA: Harrisburg
PA: Pittsburgh
SC: Barnwell
SC: Columbia
SD: Pierre
SD: Rapid City
TN: Knoxville
TN: Memphis
TN: Nashville
TN: Oak Ridge/Bethel
TN: Oak Ridge/K25
TN: Oak Ridge/Melton
TN: Oak Ridge/Y12 E
TN: Oak Ridge/Y12 W
TX: Amarillo
TX: Corpus Christi
TX: Dallas
TX: El Paso
TX: Harlingen
TX: Houston
TX: Laredo
TX: SanAngelo
TX: San Antonio
UT: Salt Lake City
VA: Lynchburg
VA: Richmond
VA: Virginia Beach
WA: Olympia
WA: Richland
WA: Seattle
WA: Spokane
WI: Milwaukee
WV: Charleston
Number
of
Samples
8
6
2
4
8
1
8
6
5
7
7
7
7
7
4
1
7
7
7
1
6
7
8
8
7
5
6
8
8
8
7
9
6
5-hour Field
Estimate
Max Min Avg
(pCi/m3)
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.1
0.2 0.0 0.1
0.2 0.2 0.2
0.1 0.0 0.1
0.0 0.0 0.0
0.0 0.0 0.0
0.4 0.0 0.2
0.7 0.1 0.2
0.2 0.1 0.1
0.3 0.0 0.1
0.2 0.0 0.1
0.9 0.4 0.6
0.2 0.0 0.2
1.5 0.3 0.6
0.7 0.2 0.3
0.8 0.0 0.3
0.0 0.0 0.0
0.5 0.0 0.3
0.1 0.0 0.0
0.5 0.0 0.3
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
-0.0 -0.1 -0.1
0.0 0.0 0.0
NAREL Lab
Measurement
Max Min Avg
(pCi/m3)
0.020 0.004 0.012
0.015 0.006 0.011
0.013 0.011 0.012
0.014 0.008 0.011
0.031 0.009 0.014
0.059 0.059 0.059
0.014 0.002 0.008
0.021 0.008 0.016
0.015 0.005 0.010
0.026 0.004 0.015
0.031 0.004 0.018
0.026 0.004 0.017
0.025 0.004 0.016
0.030 0.004 0.018
0.028 0.005 0.014
0.011 0.011 0.011
0.018 0.007 0.012
0.043 0.002 0.023
0.019 0.007 0.013
0.008 0.008 0.008
0.043 0.004 0.013
0.023 0.004 0.011
0.017 0.005 0.011
0.061 0.002 0.021
0.017 0.008 0.012
0.011 0.005 0.007
0.012 0.004 0.009
0.019 0.001 0.005
0.060 0.004 0.015
0.006 0.001 0.003
0.023 0.003 0.011
0.026 0.009 0.016
0.018 0.009 0.013
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Table 3
Gross Beta in Airborne Particulates
February 2010
Location
AK: Anchorage
AK: Fairbanks
AL: Birmingham
AL: Montgomery/408
AR: Little Rock
AZ: Phoenix
AZ: Phoenix/956
AZ: Tucson
CA: Anaheim
CA: Bakersfield
CA: Eureka
CA: Los Angeles
CA: Richmond
CA: Riverside
CA: Sacramento
CA: San Bernardino Cty.
CA: San Diego
CA: San Francisco
CA: San Jose
CO: Colorado Springs
CO: Denver
CT: Hartford
DC: Washington
DE: Dover
FL: Miami
FL: Orlando
FL: Tallahassee
GA: Atlanta
GA: Augusta
HI: Hilo
HI: Honolulu
IA: Des Moines
IA: Mason City
ID: Idaho Falls
IL: Aurora
IN: Fort Wayne
IN: Indianapolis
KS: Kansas City
Number
of
Samples
4
6
8
8
6
7
8
8
4
8
1
7
3
7
7
8
5
4
3
3
8
8
7
4
3
8
4
2
4
8
8
7
3
2
8
1
8
8
5-hour Field
Estimate
Max Min Avg
(pCi/m3)
0.5 -0.0 0.1
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
1.4 0.0 0.7
0.4 0.4 0.4
0.0 0.0 0.0
0.0 0.0 0.0
1.4 0.0 0.3
0.0 0.0 0.0
0.1 0.0 0.1
0.1 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.1
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.4 0.1 0.2
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.1
0.1 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
NAREL Lab
Measurement
Max Min Avg
(pCi/m3)
0.008 0.001 0.004
0.016 0.002 0.009
0.019 0.011 0.013
0.022 0.010 0.016
0.020 0.008 0.013
0.026 0.008 0.018
0.028 0.010 0.018
0.028 0.004 0.009
0.020 0.005 0.011
0.030 0.003 0.015
0.001 0.001 0.001
0.017 0.004 0.010
0.005 0.003 0.004
0.021 0.004 0.010
0.012 0.003 0.007
0.024 0.004 0.015
0.012 0.003 0.008
0.005 0.002 0.004
0.006 0.003 0.005
0.016 0.011 0.013
0.016 0.005 0.010
0.008 0.000 0.004
0.008 0.003 0.005
0.011 0.006 0.008
0.008 0.006 0.007
0.011 0.005 0.008
0.009 0.005 0.007
0.009 0.006 0.008
0.012 0.007 0.010
0.006 0.002 0.004
0.005 0.002 0.003
0.018 0.005 0.012
0.020 0.016 0.018
0.024 0.012 0.018
0.024 0.007 0.014
0.021 0.021 0.021
0.016 0.008 0.012
0.036 0.009 0.020
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Table 3 (continued)
Gross Beta in Airborne Particulates
February 2010
Location
KS: Topeka
KY: Lexington
LA: Baton Rouge
LA: Shreveport
MA: Worcester
MD: Baltimore
ME: Orono
ME: Portland
MI: Bay City 48708
MI: Detroit
MN: Duluth
MN: St. Paul
MN: Welch/510
MO: Jefferson City
MO: Springfield
MS: Jackson
MS: Jackson/Deq
MT: Billings
NC: Charlotte
NC: Wilmington
ND: Bismarck
NE: Kearney
NE: Lincoln
NE: Omaha
NJ: Edison
NJ: Trenton
NM: Carlsbad
NM: Santa Fe
NV: Las Vegas/9 13
NY: Albany
NY: Hauppauge
NY: Lockport
NY: Rochester
NY: Yaphank
OH: Cincinnati
OH: Cleveland
OK: Oklahoma City
OR: Portland
Number
of
Samples
8
7
8
6
6
6
6
6
7
8
4
4
8
7
8
6
8
3
8
4
4
8
8
3
7
6
4
3
9
8
5
7
7
5
7
8
3
8
5-hour Field
Estimate
Max Min Avg
(pCi/m3)
0.3 0.0 0.1
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 -0.0 0.0
0.0 -0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
0.2 0.0 0.1
0.2 0.0 0.1
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.4 0.0 0.1
0.1 0.0 0.0
0.0 0.0 0.0
0.0 -0.0 0.0
0.2 0.0 0.1
0.5 0.0 0.2
0.6 0.0 0.2
0.1 0.0 0.0
0.1 0.0 0.0
0.0 -0.0 -0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.1
NAREL Lab
Measurement
Max Min Avg
(pCi/m3)
0.040 0.015 0.024
0.019 0.006 0.011
0.011 0.006 0.008
0.011 0.006 0.009
0.009 0.001 0.005
0.013 0.004 0.009
0.008 0.001 0.004
0.012 0.001 0.006
0.019 0.004 0.010
0.015 0.002 0.008
0.010 0.007 0.008
0.013 0.006 0.010
0.028 0.010 0.021
0.018 0.006 0.012
0.025 0.011 0.018
0.020 0.011 0.015
0.019 0.007 0.011
0.030 0.015 0.023
0.015 0.005 0.008
0.007 0.005 0.006
0.025 0.013 0.019
0.041 0.005 0.017
0.020 0.007 0.014
0.028 0.013 0.018
0.009 0.003 0.006
0.015 0.007 0.010
0.015 0.007 0.011
0.018 0.015 0.016
0.019 0.011 0.014
0.013 0.001 0.007
0.016 0.005 0.011
0.010 0.003 0.007
0.008 0.004 0.005
0.006 0.002 0.005
0.013 0.006 0.011
0.015 0.004 0.010
0.009 0.008 0.008
0.018 0.008 0.012
-------
Table 3 (continued)
Gross Beta in Airborne Particulates
February 2010
Location
PA: Harrisburg
PA: Pittsburgh
SC: Barnwell
SC: Columbia
SD: Pierre
TN: Knoxville
TN: Memphis
TN: Nashville
TN: Oak Ridge/Bethel
TN: Oak Ridge/K25
TN: Oak Ridge/Melton
TN: Oak Ridge/Y12 E
TN: Oak Ridge/Y12 W
TX: Amarillo
TX: Corpus Christi
TX: Dallas
TX: El Paso
TX: Ft. Worth
TX: Houston
TX: Laredo
TX: SanAngelo
TX: San Antonio
UT: Salt Lake City
VA: Lynchburg
VA: Richmond
VA: Virginia Beach
WA: Olympia
WA: Richland
WA: Seattle
WA: Spokane
WI: Milwaukee
WV: Charleston
Number
of
Samples
8
5
1
4
8
4
5
3
7
7
7
7
7
7
2
7
8
6
7
7
7
8
8
8
7
6
8
8
7
7
7
5
5-hour Field
Estimate
Max Min Avg
(pCi/m3)
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.1
0.1 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.
0.2 0.0 0.
0.1 0.0 0.
0.1 0.0 0.
0.1 0.0 0.
0.4 0.1 0.2
0.1 0.0 0.1
1.8 0.5 0.9
0.1 0.0 0.1
0.6 0.0 0.3
0.0 0.0 0.0
0.3 0.0 0.2
0.2 0.0 0.1
0.3 0.0 0.1
0.0 0.0 0.0
0.0 -0.0 0.0
0.0 0.0 0.0
0.2 0.0 0.1
0.0 0.0 0.0
0.1 0.0 0.1
0.0 0.0 0.0
0.0 0.0 0.0
NAREL Lab
Measurement
Max Min Avg
(pCi/m3)
0.018 0.009 0.014
0.016 0.009 0.011
0.013 0.013 0.013
0.016 0.009 0.012
0.023 0.010 0.017
0.011 0.005 0.008
0.018 0.010 0.013
0.013 0.008 0.011
0.022 0.011 0.015
0.024 0.011 0.016
0.023 0.012 0.015
0.021 0.012 0.014
0.021 0.012 0.015
0.020 0.007 0.012
0.012 0.009 0.011
0.014 0.008 0.011
0.023 0.011 0.016
0.018 0.008 0.013
0.014 0.006 0.009
0.015 0.003 0.007
0.019 0.008 0.012
0.010 0.004 0.008
0.021 0.011 0.017
0.019 0.008 0.012
0.007 0.003 0.006
0.010 0.006 0.008
0.005 0.002 0.004
0.019 0.005 0.010
0.006 0.002 0.004
0.017 0.005 0.010
0.022 0.006 0.011
0.012 0.009 0.010
-------
Table 4
Gross Beta in Airborne Particulates
March 2010
Location
AK: Anchorage
AK: Fairbanks
AL: Birmingham
AL: Montgomery/408
AR: Little Rock
AZ: Phoenix
AZ: Phoenix/956
AZ: Tucson
CA: Anaheim
CA: Bakersfield
CA: Eureka
CA: Fresno
CA: Los Angeles
CA: Richmond
CA: Riverside
CA: Sacramento
CA: San Bernardino Cty.
CA: San Diego
CA: San Francisco
CA: San Jose
CO: Colorado Springs
CO: Denver
CO: Grand Junction
CT: Hartford
DC: Washington
DE: Dover
FL: Jacksonville
FL: Miami
FL: Orlando
FL: Tallahassee
GA: Augusta
HI: Hilo
HI: Honolulu
IA: Des Moines
IA: Mason City
ID: Idaho Falls
IL: Aurora
IN: Fort Wayne
Number
of
Samples
9
5
8
9
8
7
9
9
5
9
4
4
9
4
9
9
8
5
4
4
5
9
3
9
9
6
3
6
9
1
5
9
9
8
6
2
9
5
5-hour Field
Estimate
Max Min Avg
(pCi/m3)
0.0 -0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
1.2 0.2 0.6
1.4 0.1 0.5
0.0 -0.0 0.0
0.0 0.0 0.0
1.1 0.0 0.3
0.0 0.0 0.0
0.1 0.1 0.1
0.1 0.0 0.1
0.1 0.0 0.0
0.0 0.0 0.0
0.2 0.0 0.1
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.4 0.1 0.2
0.4 0.4 0.4
0.1 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.1
0.0 0.0 0.0
0.1 0.0 0.0
0.2 0.0 0.1
0.3 0.0 0.1
0.1 0.0 0.1
0.2 -0.0 0.1
0.1 0.0 0.0
NAREL Lab
Measurement
Max Min Avg
(pCi/m3)
0.006 0.002 0.004
0.014 0.008 0.010
0.017 0.005 0.010
0.017 0.007 0.011
0.016 0.005 0.009
0.016 0.007 0.012
0.024 0.006 0.014
0.008 0.003 0.005
0.011 0.004 0.006
0.011 0.003 0.006
0.001 0.000 0.000
0.016 0.004 0.009
0.012 0.002 0.006
0.005 0.003 0.004
0.012 0.004 0.006
0.008 0.002 0.004
0.014 0.003 0.007
0.009 0.003 0.006
0.005 0.002 0.003
0.006 0.002 0.004
0.016 0.009 0.011
0.012 0.006 0.010
0.009 0.007 0.008
0.012 0.002 0.006
0.008 0.001 0.005
0.010 0.003 0.007
0.007 0.004 0.006
0.011 0.006 0.007
0.018 0.004 0.009
0.014 0.014 0.014
0.009 0.007 0.008
0.007 0.002 0.004
0.004 0.002 0.003
0.012 0.004 0.008
0.019 0.008 0.012
0.005 0.004 0.005
0.022 0.005 0.012
0.014 0.001 0.009
-------
Table 4 (continued)
Gross Beta in Airborne Particulates
March 2010
Location
IN: Indianapolis
KS: Kansas City
KS: Topeka
KY: Lexington
LA: Baton Rouge
LA: Shreveport
MA: Worcester
MD: Baltimore
ME: Orono
ME: Portland
MI: Bay City 48708
MI: Detroit
MN: Duluth
MN: St. Paul
MN: Welch/510
MO: Jefferson City
MO: Springfield
MS: Jackson
MS: Jackson/Deq
MT: Billings
NC: Charlotte
NC: Wilmington
ND: Bismarck
NE: Kearney
NE: Lincoln
NE: Omaha
NJ: Edison
NJ: Trenton
NM: Carlsbad
NM: Santa Fe
NV: Las Vegas/9 13
NV: Washoe County
NY: Albany
NY: Hauppauge
NY: Rochester
NY: Yaphank
OH: Cincinnati
OH: Cleveland
Number
of
Samples
9
8
9
8
9
7
7
9
7
8
8
9
8
5
8
8
8
5
9
2
7
5
9
9
8
5
9
8
5
6
7
8
9
9
8
9
9
9
5-hour Field
Estimate
Max Min Avg
(pCi/m3)
0.1 0.0 0.0
0.1 0.0 0.1
0.2 0.1 0.1
0.0 0.0 0.0
0.1 0.0 0.1
0.0 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.0 0.0 0.0
0.0 -0.0 -0.0
0.1 0.0 0.0
0.1 0.0 0.0
0.1 -0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.1
0.3 0.0 0.1
0.1 0.0 0.0
0.4 0.0 0.1
0.4 0.0 0.1
0.0 0.0 0.0
0.1 -0.0 0.0
0.1 0.0 0.0
0.4 0.0 0.2
0.2 0.0 0.1
0.0 0.0 0.0
0.0 -0.0 0.0
0.2 0.0 0.1
0.5 0.0 0.1
0.1 0.0 0.0
0.5 -0.0 0.1
0.1 0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
0.0 -0.0 0.0
0.1 0.0 0.0
0.1 0.0 0.0
NAREL Lab
Measurement
Max Min Avg
(pCi/m3)
0.011 0.004 0.008
0.021 0.008 0.012
0.022 0.007 0.013
0.008 0.003 0.006
0.009 0.004 0.006
0.011 0.005 0.008
0.011 0.002 0.007
0.017 0.004 0.010
0.008 0.002 0.006
0.023 0.003 0.008
0.015 0.008 0.010
0.016 0.006 0.009
0.016 0.005 0.010
0.013 0.007 0.009
0.022 0.009 0.014
0.012 0.006 0.008
0.012 0.005 0.009
0.018 0.009 0.012
0.013 0.004 0.008
0.026 0.009 0.017
0.012 0.003 0.008
0.007 0.004 0.005
0.018 0.004 0.011
0.016 0.004 0.009
0.013 0.004 0.009
0.019 0.007 0.013
0.010 0.002 0.006
0.017 0.003 0.009
0.010 0.008 0.009
0.017 0.007 0.010
0.011 0.005 0.007
0.008 0.003 0.005
0.012 0.002 0.008
0.019 0.003 0.011
0.013 0.004 0.007
0.008 0.001 0.005
0.016 0.005 0.009
0.017 0.005 0.009
-------
Table 4 (continued)
Gross Beta in Airborne Particulates
March 2010
Location
OK: Oklahoma City
OR: Portland
PA: Harrisburg
PA: Pittsburgh
SC: Barnwell
SC: Columbia
SD: Pierre
TN: Knoxville
TN: Memphis
TN: Nashville
TN: Oak Ridge/Bethel
TN: Oak Ridge/K25
TN: Oak Ridge/Melton
TN: Oak Ridge/Y12 E
TN: Oak Ridge/Y12 W
TX: Amarillo
TX: Dallas
TX: El Paso
TX: Ft. Worth
TX: Houston
TX: Laredo
TX: SanAngelo
TX: San Antonio
UT: Salt Lake City
VA: Lynchburg
VA: Richmond
VA: Virginia Beach
WA: Olympia
WA: Richland
WA: Seattle
WA: Spokane
WI: Milwaukee
WV: Charleston
Number
of
Samples
3
7
8
5
3
4
9
3
7
2
9
9
9
9
9
7
8
9
7
8
8
8
9
8
9
8
9
8
6
9
8
3
6
5-hour Field
Estimate
Max Min Avg
(pCi/m3)
0.0 0.0 0.0
0.1 0.0 0.0
0.3 0.0 0.1
0.1 0.0 0.0
0.0 0.0 0.0
0.1 0.0 0.0
0.5 0.0 0.2
0.1 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.3 0.1 0.2
0.4 0.1 0.3
0.3 0.0 0.2
0.4 0.0 0.2
0.2 0.1 0.1
0.7 0.0 0.3
0.4 0.0 0.2
1.7 0.1 0.8
0.2 0.0 0.1
0.6 0.0 0.2
0.0 0.0 0.0
0.4 0.0 0.2
0.2 0.0 0.1
0.5 0.0 0.2
0.0 0.0 0.0
0.3 0.0 0.1
0.0 0.0 0.0
0.3 0.0 0.1
0.0 0.0 0.0
0.2 0.0 0.1
0.0 0.0 0.0
0.0 0.0 0.0
NAREL Lab
Measurement
Max Min Avg
(pCi/m3)
0.010 0.007 0.009
0.012 0.005 0.007
0.029 0.004 0.016
0.012 0.004 0.008
0.010 0.007 0.008
0.019 0.006 0.011
0.022 0.005 0.011
0.007 0.004 0.005
0.015 0.006 0.011
0.008 0.008 0.008
0.016 0.006 0.010
0.017 0.005 0.011
0.017 0.005 0.010
0.019 0.005 0.011
0.016 0.004 0.010
0.013 0.005 0.009
0.013 0.004 0.009
0.015 0.008 0.012
0.015 0.007 0.011
0.012 0.006 0.009
0.010 0.005 0.008
0.011 0.005 0.008
0.011 0.004 0.008
0.014 0.004 0.009
0.016 0.004 0.009
0.010 0.001 0.005
0.012 0.003 0.006
0.004 0.002 0.003
0.004 0.002 0.003
0.004 0.002 0.002
0.010 0.004 0.006
0.010 0.008 0.009
0.010 0.006 0.008
10
-------
Table 5
Specific Gamma in Precipitation
January 2010
Location
AL: Montgomery/408
AR: Little Rock
AZ: Phoenix
CA: Richmond
CO: Denver
CT: Hartford
FL: Jacksonville
ID: Idaho Falls
KS: Kansas City
MN: St. Paul
MN: Welch/510
NC: Charlotte
NC: Wilmington
NY: Albany
NY: Yaphank
OR: Portland
PA: Harrisburg
TN: Knoxville
TN: Nashville
TN: Oak Ridge/K25
TN: Oak Ridge/Melton
TN: Oak Ridge/Y12 E
TX: El Paso
UT: Salt Lake City
VA: Lynchburg
WA: Olympia
Nuclide
Be?
Be?
K40
Be?
Be?
Be?
Be?
Pb212
Be?
Pb212
Be?
Bi212
T1208
Be?
Bi212
T1208
Pb212
T1208
Be?
Be?
Be?
Pb212
Be?
K40
Pb212
T1208
pCi/L±
31
51
ND
10
ND
63
53
ND
39
16
1.0
18
1.4
21
13.3
0.9
50
ND
27
3.1
3.8
3.9
72
25
33
1.4
38
ND
12
5.7
2.8
ND
2u
20
18
10
17
17
40
12
1.1
11
1.0
12
9.5
1.2
13
38
3.7
6.0
3.5
38
17
13
1.2
17
13
7.0
3.3
11
-------
Table 6
Specific Gamma in Precipitation
February 2010
Location
AL: Montgomery/408
AR: Little Rock
AZ: Phoenix
CA: Richmond
CT: Hartford
FL: Jacksonville
ID: Idaho Falls
MN: St. Paul
MN: Welch/510
NC: Charlotte
NC: Wilmington
NM: Santa Fe
NY: Albany
OR: Portland
PA: Harrisburg
TN: Nashville
TN:OakRidge/K25
TN: Oak Ridge/Melton
TN: Oak Ridge/Y12 E
TX: El Paso
UT: Salt Lake City
VA: Lynchburg
WA: Olympia
Nuclide
Be?
Pb212
Be?
Be?
Be?
Pb212
Be?
Be?
Pb212
T1208
K40
Be?
Be?
Be?
Be?
Pb212
K40
pCi/L±
52
2.5
ND
30
43
80
4.7
ND
ND
33
49
1.2
1.9
ND
26
ND
73
88
93
106
ND
ND
3.5
38
2u
40
2.5
24
32
43
5.6
33
24
1.8
3.8
42
67
43
37
42
5.5
34
12
-------
Table 7
Specific Gamma in Precipitation
March 2010
Location
AL: Montgomery/408
AR: Little Rock
AZ: Phoenix
CA: Richmond
CO: Denver
CT: Hartford
FL: Jacksonville
KS: Kansas City
MN: St. Paul
MN: Welch/510
NC: Charlotte
NC: Wilmington
NM: Santa Fe
NY: Albany
NY: Yaphank
OR: Portland
PA: Harrisburg
TN: Knoxville
TN: Nashville
TN:OakRidge/K25
TN: Oak Ridge/Melton
TN:OakRidge/Y12E
UT: Salt Lake City
VA: Lynchburg
WA: Olympia
Nuclide
Be?
Pb212
Be?
K40
Bi212
Be?
Be?
K40
Be?
Bi212
T1208
Pb212
K40
Be?
K40
K40
Pb212
K40
T1208
K40
Be?
Be?
Be?
pCi/L±
65
2.0
43
8
35
46
ND
35
10
70
ND
43
2.1
ND
2.0
8
71
9
20
1.9
ND
ND
19
4.1
55
57
77
40
ND
ND
ND
2u
35
2.4
33
12
36
34
34
12
35
43
3.9
2.5
11
70
12
11
2.4
34
3.8
36
37
37
31
13
-------
Table 8
Tritium in Precipitation
January - March 2010
Location
AL: Montgomery/408
AR: Little Rock
AZ: Phoenix
CA: Richmond
CO: Denver
CT: Hartford
FL: Jacksonville
ID: Idaho Falls
KS: Kansas City
MN: St. Paul
MN: Welch/510
NC: Charlotte
NC: Wilmington
NM: Santa Fe
NY: Albany
NY: Yaphank
OR: Portland
PA: Harrisburg
TN: Knoxville
TN: Nashville
TN: Oak Ridge/K25
TN: Oak Ridge/Melton
TN:OakRidge/Y12E
TX: El Paso
UT: Salt Lake City
VA: Lynchburg
WA: Olympia
January 2010
pCi/L ±2w
28 89
53 91
-100 100
-20 110
15 88
120 94
6 88
0 110
-17 87
26 90
47 90
55 91
-4 88
NS
68 91
19 89
-60 100
26 89
45 90
34 90
139 95
340 100
116 94
24 90
0 100
74 91
-30 100
February 2010
pCi/L ±2«
32 92
55 92
23 92
-20 79
NS
101 95
74 94
-13 79
NS
80 94
89 95
53 93
57 93
17 91
69 93
NS
36 92
124 96
NS
-11 90
270 100
310 100
230 100
102 94
25 92
45 93
-65 77
March 2010
pCi/L ±2w
-31 96
-71 94
34 81
116 85
-84 94
-75 94
-31 96
NS
-82 94
-64 95
-11 97
-77 94
-64 94
-53 95
-62 95
-110 92
24 81
-104 93
-66 94
-117 92
220 110
29 98
-18 96
NS
-9 79
-68 94
-2 79
Note: NS = No Sample
14
-------
Plutonium and Uranium in Airborne Particulates
Environmental radiation levels of plutonium and uranium are determined by the analysis
of annually composited samples (air filters) collected from the continuously operating
airborne particulate samplers.
Concentrations of plutonium-238, combined plutonium-239 and 240, and uranium-234,
235, and 238 are determined by alpha-particle spectrometry following chemical
separation. The volume of air represented by the annual composite typically ranges from
120,000 to 500,000 cubic meters.
Plutonium and uranium results are published when they become available.
15
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16
-------
2. Drinking Water Program
The RadNet drinking water program provides data on radionuclide concentrations in the nation's
drinking water supplies. Samples are taken at 78 sites which are either major population centers
or selected nuclear facility environs.
Drinking water data are used 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/L, when the gross alpha (excluding radon and uranium)
levels do not exceed 15 pCi/L, when tritium levels do not exceed 20,000 pCi/L, when the
strontium-90 levels do not exceed 8 pCi/L, and when the gross beta levels do not
exceedSO pCi/L.
The analyses include (a) tritium on a quarterly basis; (b) gross alpha, gross beta, and gamma on
annual composites; (c) radium-226 if the gross alpha exceeds 2 pCi/L and radium-228 if the
radium-226 falls between 3 and 5 pCi/Lon annual composites; (d) iodine-131 on one quarterly
sample per year for each station; and (e) plutonium-238, combined plutonium-239 and 240, and
uranium-234, 235, and 238 for stations that demonstrate gross alpha levels greater than
2 pCi/Lon annual composites; and (f) strontium-90 on one-fourth of the annual composites on a
four year rotating schedule.
17
-------
Table 9
Tritium in Drinking Water
January - March 2010
Location
AK: Fairbanks
AL: Dothan
AL: Montgomery
AL: Muscle Shoals
AL: Scottsboro
AL: Scottsboro
AR: Little Rock
CA: Los Angeles
CA: Richmond
CO: Denver
CT: Hartford
DE: Dover
FL: Tampa
GA: Baxley
GA: Savannah
HI: Honolulu
IA: Cedar Rapids
ID: Boise
ID: Idaho Falls
IL: Morris
IL: W. Chicago
LA: New Orleans
MD: Baltimore
MD: Conowingo
MI: Detroit
MI: Grand Rapids
MN: St. Paul
MN: Welch
MO: Jefferson City
MS: Jackson
MS: Port Gibson
MT: Helena
NC: Raleigh
ND: Bismarck
NE: Lincoln
NJ: Trenton
NJ: Waretown
NY: Albany
NY: New York City
NY: Niagara Falls
Date
Collected
01/18/10
01/13/10
01/11/10
01/07/10
01/06/10
03/31/10
01/12/10
01/12/10
01/07/10
01/07/10
01/11/10
01/11/10
01/21/10
02/02/10
03/09/10
02/04/10
01/22/10
03/02/10
01/14/10
02/17/10
02/08/10
03/25/10
01/07/10
01/12/10
03/04/10
03/29/10
01/11/10
01/12/10
01/08/10
02/19/10
02/17/10
01/25/10
02/26/10
01/11/10
01/11/10
01/11/10
01/13/10
01/26/10
01/19/10
01/12/10
3H
pCi/L ±2«
30 91
-18 88
11 98
-14 88
-29 88
13 87
-8 88
-84 85
30 100
-43 87
-35 87
-41 87
-14 83
-5 84
13 88
-9 83
0 83
-110 98
18 90
63 92
24 80
9 87
2 90
78 89
-20 100
-26 85
-45 87
-53 87
51 91
-110 100
-50 100
-22 88
-40 100
-21 88
-115 84
-21 88
51 87
47 86
-48 87
11 96
18
-------
Table 9 (continued)
Tritium in Drinking Water
January - March 2010
Location
NY: Syracuse
OH: Cincinnati
OH: Columbus
OH: E. Liverpool
OH: Painesville
OH: Toledo
OK: Oklahoma City
OR: Portland
PA: Columbia
PA: Harrisburg
PA: Philadelphia/Baxter
PA: Philadelphia/Belmont
PA: Philadelphia/Queen
PA: Pittsburgh
RI: Providence
SC: Barnwell
SC: Columbia
SC: Jenkinsville
SC: Seneca
TN: Chattanooga
TN: Knoxville
TN:OakRidge/#360
TN:OakRidge/#371
TN:OakRidge/#4442
TN:OakRidge/#768
TN:OakRidge/#772
TX: Austin
VA: Ashland
VA: Lynchburg
WA: Richland
WA: Seattle
Date
Collected
02/24/10
01/22/10
03/30/10
01/27/10
02/09/10
01/11/10
01/11/10
03/31/10
01/13/10
01/12/10
02/02/10
02/02/10
02/02/10
01/26/10
03/18/10
01/12/10
01/15/10
01/13/10
01/11/10
01/11/10
01/08/10
01/12/10
01/12/10
01/12/10
01/12/10
01/12/10
01/08/10
02/22/10
01/11/10
03/01/10
03/26/10
3H
pCi/L ±2«
-60 100
18 90
220 100
73 89
27 90
39 91
-12 88
41 88
49 87
66 88
2 84
39 85
-14 83
16 85
-9 86
16 85
82 88
57 88
63 87
18 90
-8 89
-40 94
-47 94
-46 96
6 97
11 97
-4 89
3820 210
96 89
-30 100
-21 84
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3. Milk Program
Pasteurized Milk
Milk is a reliable indicator of the general population's intake of certain radionuclides since it is
consumed fresh by a large segment of the population and can contain several of the biologically
significant radionuclides that result from environmental releases from nuclear activities. A
primary function of this program is to obtain reliable monitoring data relative to current radio-
nuclide concentrations and determine any long-term trends.
Quarterly samples are collected at approximately 55 sampling sites. 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, including iodine-131, barium-140,
cesium-137, and potassium-40. Total potassium concentrations in g/L are determined from
potassium-40 activities assuming natural isotopic abundances. During the third quarter collec-
tion, one-fourth of the samples are also analyzed for strontium-90 on a four year rotating
schedule.
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Table 10
Radionuclides in Pasteurized Milk
January - March 2010
Location
AR: Little Rock
AZ: Phoenix
CA: Los Angeles
CA: San Francisco
CT: Hartford
DE: Wilmington
FL: Plant City
HI: Hilo
IA: Des Moines
KS: Wichita
KY: Louisville
MD: Baltimore
MO: Jefferson City
NJ: Trenton
NV: Las Vegas
NY: Buffalo
NY: Syracuse
OH: Cincinnati
OH: Cleveland
OR: Portland
PA: Pittsburgh
TN: Chattanooga
TN: Knoxville
TN: Memphis
TX: Austin
TX: Dallas
VA: Norfolk
VT: Montpelier
WA: Spokane
WA: Tacoma
WV: Charleston
Date
Collected
01/11/10
03/03/10
02/11/10
01/13/10
02/19/10
02/08/10
02/17/10
01/25/10
02/16/10
01/20/10
01/20/10
01/05/10
01/13/10
01/11/10
03/25/10
02/22/10
02/09/10
01/19/10
03/05/10
01/11/10
02/01/10
01/28/10
03/03/10
01/11/10
01/19/10
03/30/10
01/25/10
03/31/10
02/23/10
03/27/10
01/11/10
K
g/L ±2w
.68 0.20
.56 0.20
.62 0.20
.88 0.23
.63 0.20
.55 0.19
.63 0.20
.63 0.20
.41 0.19
.66 0.21
.63 0.20
.55 0.19
.68 0.21
.44 0.19
.62 0.20
.58 0.20
.60 0.20
.50 0.19
.56 0.20
.58 0.20
.45 0.19
.54 0.20
.50 0.19
.41 0.19
.53 0.20
.56 0.19
.62 0.21
.61 0.21
.62 0.20
.68 0.20
.49 0.19
137Cs
pCi/L ±2«
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
140Ba
pCi/L ±2«
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
131j
pCi/L ±2u
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
Note: ND = Not Detected
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For More Information
Environmental Radiation Data(ERD) is published quarterly by the U.S. Environmental
Protection Agency's Office of Radiation and Indoor Air.
Requests for information concerning the operation of RadNet, the data that are generated or
publication and distribution of ERD should be directed to:
Charles M. Petko
Office of the Director
National Air and Radiation Environmental Laboratory
540 South Morris Avenue
Montgomery, Alabama 36115-2601
e-mail: petko.charles@epa.gov
Requests for information concerning policies of the Office of Radiation and Indoor Air should be
directed to:
Jonathan Edwards
USEPA - ORIA
Radiation Protection Division (MC6608J)
1200 Pennsylvania Ave. N.W.
Washington, DC 20460
e-mail: edwards.jonathan@epa.gov
***
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