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moderately impacted by petroleum hydrocarbons. A report of investigative activities including <br />a site plan showing the soil boring locations and the tabula ted contaminant concentration data <br />from that investigation is included in Appendix B. <br />Approximately 1,530 cubic yards of soil were excavated under the supervision of Uriah <br />Environmental in 1990 to remediate contaminated soils beneath the site. No soil was excavated <br />from the saturated zone. The soil was aerated under permit from the San Joaquin County Air <br />Pollution Control District (APCD) and, subsequent to verification of successful remediation <br />through sampling of the stockpiled soil, was used to backfill the excavation. The work was <br />performed under the direction of the APCD and local fire '`district after the PHS/EHD and the <br />California Regional Water Quality Control Board indicated that their oversight would not be <br />provided. The Soil Remediation Report prepared by Uriah Environmental is also included in <br />Appendix B. f <br />On September 7, 1995 Ground Zero performed additional <br />of Mr. Ranuio in anticipation of commercial developr <br />supervised the drilling of three soil borings (SBI, SB2, <br />vicinity of the former tanks and dispenser island. SB2 <br />further from SBI. in the assumed downgradient direction, <br />location of the borings are shown on Figure 2. Drilling <br />710678) underPe rmit from PHS/EHD. Ms. Linda <br />�observe field activities. <br />Field observations and analytical results of soil samples <br />in each soil boring indicated that the soil excavation p <br />impacted soil in the unsaturated zone. Hydropunch groundv <br />SBI and SB3 suggested that groundwater contamination was <br />groundzeVanuioklosure <br />I <br />4 <br />urface investigation at the request <br />of the property. Ground Zero <br />SB3). SB1 was advanced in the <br />SB3 were located progressively <br />of the former tanks. The <br />performed by V&W Drilling (C57- <br />atte of PHS/EHD was present to <br />from the capillary fringe zone <br />in 1990 successfully removed <br />samples collected from borings <br />to a relatively localized area <br />