7
Field Loc ID
Client ID
Parameter
(1)
Result Wyoming
Domestic
(4)
Primary
MCL
(5)
Secondary
MCL
(5)
Units
Gross Beta
(6)
142
50
pCi/L
Radium 226
(2)
7.2
5
5
pCi/L
Radium 228
(2)
11
5
5
pCi/L
Radium (226
+ 228)
(2)
18.2
5
5
pCi/L
Radon 222
(3)
13800
4000
pCi/L
USAF-02-GW-
05222012
Aluminum
0.98
0.2
mg/L
Iron
0.41
0.3
0.3
mg/L
Radium 228
(2)
5.9
5
5
pCi/L
Radon 222
(3)
9570
4000
pCi/L
VWMW 1
VWMW-01-GW-
08022011
Radon 222
(3)
1330
300
pCi/L
VWMW 2
VWMW-02-GW-
08022011
Radon 222
(3)
2020
300
pCi/L
Notes:
(1) Units are in mg/L, unless otherwise indicated.
(2) Requirements and procedures for the measurement and analysis of gross alpha particles activity, Radium 226 and Radium
228 shall be the same as requirements and procedures of the U.S. Environmental Protection Agency, National Interim
Primary Drinking Water Regulations, EPA-570/9-76-003, effective June 24, 1977.
(3) Proposed EPA MCL for public water systems is 300 pCi/L; the EPA proposed Alternate Maximum Contaminant Level for
individual water wells is 4000 pCi/L. Neither of these limits are currently in effect.
(4) WDEQ - Water Quality Rules and Regulations, Chapter 8 - Groundwater Standards - Class I Domestic, page 9
)
(5) EPA Primary and Secondary MCLs for Drinking Water - (
)
(6) California Water Resources Control Board, Division of Water Quality, Groundwater Ambient Monitoring and Assessment
(GAMA) Program, Rev.
