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Soil Gas Surveys

Site List

The soil gas surveys performed on multiple sites were carried out in two phases.  Initially, a reconnaissance soil gas survey was performed at the sites to identify the potential sources of contaminants present in groundwater from Well CS-16 and other CSSA wells.  A follow-up survey was performed to define the extent of contamination and provide more information on the source areas.  An additional follow-up survey was conducted at three AOCs north of Well CS-16 in December 1999.  Additional soil gas surveys were conducted on selected SWMUs and AOCs in January and February 2001.  Soil gas sampling grids were set up based on the results of the geophysical investigation performed at each site.  These grids were established on intervals of 25 to 100 feet, depending on the size of the area to be surveyed.

Soil gas surveys were conducted at all sites listed below.  Maps are provided in the Technical Memorandum on Soil Gas Surveys or via the site links below in instances where constituents were detected in the soil gas survey.

SWMU B-2

SWMU B-28

AOC 38

AOC 63

SWMU B-3

SWMU Bldg. 43

AOC 39

AOC 65

SWMU B-4

SWMU O-1

AOC 40

AOC 66

SWMU B-10

SWMU I-1

AOC 41

WWTP

SWMU B-15/16

AOC 35

AOC 42

 

SWMU B-23

AOC 36

AOC 55

 

SWMU B-23A

AOC 37

AOC 57