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1 <br /> excavation contained higher concentrations of diesel constituents None of the samples contained <br /> detectable concentrations ofBTEX constituents (Table 1) <br /> I <br /> 3.4.2 Soil Stockpile <br /> 1 Sixteen composite samples were collected from the excavated material (WaterWork figure, <br /> Appendix V) The samples were analyzed under Title 22 requirements for total and soluble <br /> 1 metals and for 96 hour static fish bioassay Based on these analyses, the soils were self-certified <br /> as non-hazardous and transported to the BJJ Company facility at 2431 East Mariposa Road, <br /> 1 Stockton, California The sods were stockpiled on 6 mil plastic and subsequently remediated and <br /> disposed of by Lawrence E Swain of Valley Springs, California in an appropriate manner under <br /> approval of San Joaquin County Public Health Services The results of confirmation soil sampling <br /> 1 of the soil stockpile are presented in Table 4 <br /> ' The pit was subsequently backfilled with clean sandy soil and which was compacted to 94% <br /> maximum compaction at optimum moisture A new asphalt road was constructed over the top of <br /> the former excavation <br /> 3.4.3 Groundwater Remediation <br /> 1 No groundwater remediation was warranted <br /> 1 4.0 EXISTING CONDITIONS <br /> 4.1 Soil Conditions <br /> 1 The site is currently a parking lot Soils beneath the site are fine grained, consisting mostly of silty <br /> clay <br /> 1 In order to characterize the condition of the soil at the site and determine a mass volume of <br /> residual hydrocarbons remaining in the soil at the site, Smith Environmental completed drilling of <br /> five confirmation soil borings on May 7, 1996 (Figure 2) in accordance with Smith Environmental <br /> field procedures presented in Appendix II The borings were located around the light pole and at <br /> 1 locations in the vicinity of former confirmation sidewall samples where low concentrations of <br /> TPHd were detected The borings (CB-1 to CB-5) were advanced by Vironex, Inc <br /> Environmental Field Services of Foster City, California (a State-licensed (C57) drilling company) <br /> using direct push methodology Samples were collected using the Geoprobe 5400 Soil Probe <br /> w 1967311reporU\C1osure doe 5 <br /> a <br /> 1 <br /> SKTH <br />