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Soil types encountered during boring activities consisted of clay with sand and silts No <br /> • hydrocarbon odors or stainingwere observed in the samples collected Groundwater was <br /> P <br /> encountered in the bonngs ranging in depths from 101/a to 111/z feet bsg Soil boring logs are <br /> included in Appendix B <br /> The soil cuttings generated during boring advancement were placed in labeled 55-gallon drums <br />' pending disposal at an appropriate disposal facility <br /> 3.4 Soil Sample Analysis <br /> Soil samples were collected from each of the soil borings at five-foot intervals After the <br /> 1 samples were collected,the ends of each sample tube were covered with teflon tape and capped <br /> The samples were appropriately labeled, placed in a cooler with ice, and transported under chain- <br /> of-custody protocol to McCampbell Analytical Inc , an ELAP-certified laboratory in Pacheco, <br /> rCalifornia Samples collected from 10 and 15 feet bsg were analyzed as these depths represent <br /> approximately the capillary fringe and the next-sampled depth beneath the water table The <br />' samples were analyzed for TPH-D utilizing EPA method 8015 (modified), and for BTEX and <br /> MTBE using EPA method 8020 A copy of the chain of custody is included in Appendix C <br /> 3.5 Soil Sample Analytical Results <br />' TPH-D, BTEX constituents, and MTBE were not detected in the analysis of any of the soil <br /> samples submitted to the laboratory Soil sample analytical results are summarized in Table 1 <br /> and depicted in Figure 4 A copy of the laboratory analytical report is included in Appendix C <br /> 3.6 Well Installation <br />' Groundwater monitoring wells MW-1, MW-2, and MW-3 were constructed in bonngs PB-1, PB- <br /> G, and PB-3,respectively, using two-inch diameter, schedule 40 PVC well casing The <br /> monitoring wells were screened from 8 feet bsg to the bottom of the boring (23 feet bsg)using <br /> 0 020-inch slotted casing A sand filter pack(#3) was placed from the bottom of each boring to <br /> approximately seven feet bsg A two-foot thick seal of bentonite pellets (hydrated in place) was <br /> placed above the sand filter pack of each boring The overlying annular void of each boring was <br />' filled with a cement grout The wells were completed at grade with water-tight locking caps and <br /> 8-inch diameter vault sets in concrete Copies of the well construction logs are included in <br /> Appendix B <br /> CNCD/08-11-0310 SHARFIUST/03-0096 doc 4 <br />