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I <br /> I <br /> i <br /> this excavation are presented in Table 4, laboratory reports are presented in <br /> Appendix A Low concentrations of acetone were detected in three samples <br /> ranging from 0 075 to 0 086 mg/kg In addition, one sample (Corner 8) <br /> contained low concentrations of TPH in the diesel range <br /> POI also conducted surface soil sampling around the perimeter of the <br /> compressor pads in November 1996 Sixteen samples were collected during <br /> this event The locations of the soil samples are presented in Figure 6 <br /> Analytical results are presented in Table 5 and laboratory reports are presented <br /> in Appendix A As indicated by Table 5, low concentrations of TPH as diesel <br /> were detected in 9 of the 16 samples, ranging from 1 0 to 13 mg/kg <br /> Proposed Scope of Work <br /> To address the vertical extent of chemicals in soil and the potential for impact to <br /> ground water at the site, POI proposes the installation of 4 geoprobe borings to <br /> ground water The location of the proposed borings are presented on Figure 7 <br /> Ground water is expected to be encountered at approximately 11 feet bsg All <br /> ' field activities will be performed under the direction of a California Registered <br /> Geologist <br /> Location P-1 will be installed at the east end of K-3 Theur ose of this boring <br /> p p g <br /> is to address chemical distribution in the sal, with depth, in a previously <br /> identified area containing chemically impacted soil and to determine if ground <br /> water in this area has been chemically impacted Location P-2, located at the <br /> eastern edge of pad K-4, will address similar issues as P-1 Location P-3 and <br /> P-4 will address the vertical extent of chemically impacted soil to the north and <br /> south of the hazardous material storage area and to determine if ground water <br /> has been impacted by site activities <br /> Soil samples to <br /> I s will be collected from each location at five foot intervals Soil <br /> samples for analysis will be collected in sample sleeves supplied by the driller <br /> The ends of the sleeves will be covered with Teflon tape and capped The <br /> Page 3 <br />