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1 <br /> were slightly elevated in boring SB-2 (7 ppm) and elevated in boring SB-3 (200 ppm) at 6 feet <br /> ' below ground surface (bgs) Groundwater was encountered in the borings, generally between 4 7 <br /> and 6 feet bgs FID readings and depth to water measurements are included on the boring logs <br /> 1 presented in Appendix II <br /> ' <br /> One to two soil samples were collected from each boring and submitted for laboratory analysis to <br /> ' Argon Mobile Labs in Ceres, California (Certification No 1873) using chain of custody <br /> documentation All of the samples were analyzed for total petroleum hydrocarbons as gasoline <br /> ' (TPHg) and benzene, toluene, ethylbenzene and xylenes (BTEX) by EPA methods 8015 <br /> t (modified) and 8020, respectively, and for total lead In addition, the soil samples collected from <br /> boring MW-3 were also analyzed for total petroleum hydrocarbons as motor oil (TPHmo) by <br /> ' EPA method 8015 Analytical results for soil are contained in Table 1 <br /> Monitoring Well Construction <br /> On January 5, 1996, the soil borings MW-1, MW-2 and MW-3 were completed as groundwater <br /> monitoring wells (Figure 2) by Spectrum Exploration, Inc Well construction materials consisted <br /> ' of 2-inch inside diameter PVC well screen and casing A 0 010-inch well screen slot and #2112 <br /> mesh sand pack were used Well MW 1 was screened from 4 to 15 feet bgs Wells MW2 and <br /> ' MW3 were screened from 4 to 14 feet bgs A bentonite clay plug and neat cement were used to <br /> seal the wells in accordance with California Well Standards (December 1981) To protect the <br /> ' integrity of the wells, a water-tight locking well plug was installed in each well, and a water-tight <br /> ' wellbox was concreted over each well Construction details are shown on the well logs provided <br /> in Appendix 11 <br /> 1 <br /> w-W51 I"SA a« 3 <br /> • <br /> 1 <br /> SMTH <br />