68 @ The Containment of Underground Nuclear Explosions
Table 4-2—Summary of Onsite Environmental Monitoring Program
Sampie type
Collection
frequency
Description
Number
of locations
Analysis
Ain eee Continuous sampling through
gasfilter & charcoal cartridge
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
Nobile gases
GammaSpectroscopygross beta.tritium Pu-
Supply wells ............. 1-liter grab sample
Monthly
16
Gamma “oectroscopy gross beta,tritium Pu-
Open reservoirs ..........
1-liter grab sample
Monthly
17°
Natural springs ........... 1-liter grab sample
Monthly
9°
Ponds (contaminated) .....
1-liter grab sample
Monthly
8"
Ponds (effluent) ..........
1-liter grab sample
Monthly
5
External gamma radiation
levelS ..............00. Thermoluminescent
Dosimeters
Semi-
annually
153
239 (quarterly)
239 (quarterly)
GammaSpectroscopy gross beta, trittum Pu239 (quarterly)
GammaSpectroscopygross beta.triturn Pu-
239 (quarterly)
Gamma Spectroscopy gross beta, tritium Pu239 (quarterly)
Gamma Spectroscopy gross beta, tntium Pu239 (quarterly)
Total integrated exposure over field cycle
“Notail of these locations were sampied due to inaccessibility or lack of water.
Photo credit David Graham, 1988
Community Monitoring Station, Las Vegas, NV.