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and KA compressor area The following summarizes the discussion <br /> ' presented in the workplan The workplan is included in Appendix A <br /> Ere-Excavation _Sampling <br /> ' Two previous field sampling events have occurred at the former K-3 and K-4 <br /> compressor area The first sampling was performed during the removal of <br /> ' the gas compressors TES collected 13 shallow soil samples at 13 locations <br /> ' around the former compressor pads and in the vicinity of the former <br /> hazardous materials storage area (TES, December 1996) In addition, two <br /> deeper soil samples (8 and 115 feet below surface grade (bsg)) were collected <br /> from the eastern edge of the former K-3 pad The samples collected were <br /> ' analyzed for purgeable and extractable Total Petroleum Hydrocarbons (TPH), <br /> Benzene, Toluene, Ethylbenzene, and Total Xylenes (BTEX), Volatile Organic <br /> ' Compounds (VOCs), and glycols The analytical results indicated chemical <br /> impact to shallow soil in the areas around the former compressor pads and <br /> the former hazardous materials storage area <br /> ' Soil Excavation and Veribcation Sampling <br /> Based on the results of the first investigation, POI conducted a second soil <br /> ' sampling and a soil removal event in November 1996 Shallow soil <br /> ' sampling was conducted around the perimeter of the two former compressor <br /> pads and analyzed for extractable TPH and VOCs by a mobile lab Based on <br /> ' the results of these analyses, POI excavated soil from the eastern edge of the <br /> former K-3 compressor pad and along the perimeter of the former K-4 <br /> ' compressor pad Soil was excavated to a depth of approximately 2 5 feet at the <br /> ' eastern edge of the former K-3 compressor pad Soil was excavated from the <br /> perimeter of the former K-4 compressor pad to a depth of approximately one <br /> foot The extent of both excavations was based on the results of soil samples <br /> collected during soil removal and analyzed by the mobile laboratory. A low <br />