68 © The Containment of Underground Nuclear Explosions
Table 4-2—-Summary of Onsite Environmental Monitoring Program
Sample type
Collection
fraquency
Description
Number
of Jocations
Analysis
Air ow. ee Continuous sampling through
gasfilter & charcoal cartndge
Low-volume sampling through
silica gel
Continuous low volume
Potable water........ ... 1-liter grab sample
Weekly
44
GammaSpectroscopy gross beta, Pu-239
Biweekly
16
Tritium (HTO)
Weekly
Weekly
7
7
Supply wells ..........0., 1-liter grab sample
Monthly
16
Noble gases
Gamma Spectroscopy gross beta tritium Pu239 (quarterly)
Gamma Spectroscopygross beta.tritium Pu-
Open reservoirs .......... 1-liter grab sample
Monthly
17°
GammaSpectroscopy gross beta.tritium Pu-
Natural springs ...........
1-liter grab sample
Monthly
9°
Ponds (contaminated) .....
-liter grab sample
Monthly
8°
Ponds (effluent) ..........
1-liter grab sample
Monthly
5
External gamma radiation
levelS ..............0.. Thermoluminescent
Dosimeters
Semi-
annually
153
239 (quarterly)
239 (quarteny)
Gamma Spectroscopy gross beta.tritium Pu239 (quarterty}
Gamma Spectroscopy gross beta. trittum Pu239 (quarterly)
Gamma Spectroscopy gross beta, tntium Pu239 (quarterly)
Total integrated exposure over field cycle
“Not ail of these locanons were sampied due to inaccessibility or lack of water.
Phota creat David Graham 1988
Community Monitoring Station, Las Vegas, NV.