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' M KLEINFELDER As a result of the analyses performed, an Underground Storage Tank Unauthorized Release (Leak)/Contamination Site Report was filed by Mr William R Snavely of the SJCEHD on February 3, 1989, stating that gasoline constituents were discharged to the soil beneath the site from two removed 550-gallon tanks ' On June $ 1994 a letter was issued b Ms Diane M Hinson of the SJCEHD requiring Y q g further investigation of the extent of soil contamination and the potential impact of said contaminants to soil and groundwater RROPOSED SERVICES rTask A01 - Permitting and Pre-Field Activities It has been Kleinfelder's experience that this proposal contains sufficient detail and information to be submitted to the SJCEHD to review and approve a boring/well permit Kleinfelder can prepare a boring permit application, a proposed boring location map, and ' a health and safety plan for submittal along with this proposal to SJCEHD, the permit must be approved prior to drilling the borings Following obtaining approval from the SJCEHD, Kleinfelder will commence the actual field assessment Task A02 - Drilling of Eight Soil Borings Four (4) soil borings will be advanced to a depth of approximately 35 feet below surface grade (bsg) in and surrounding each former underground storage tank (UST) to get an indication of the possible presence and/or extent of hydrocarbons in the soil at each location During the advancement of the borings, soil samples will be collected at 5-foot intervals for lithologic classification and quantitative field screening Lithologic classification will ' be based on the Unified Soil Classification System (USCS) Additionally, soil samples will be obtained for field screening with an organic vapor analyzer(OVA) The OVA measures ionizable compounds in air in parts per million by volume (ppmv) Soil samples will also be obtained for potential chemical analysis in the vadose zone Currently, based on our experience, we anticipate groundwater in the vicinity of the project site to be present at a depth of 60 to 70 feet After collection, the soil samples will be labeled, logged on a chain-of-custody, and immediately stored in an iced cooler The samples will be submitted to a State certified laboratory and analyzed on a normal laboratory schedule requiring approximately two weeks (ten working days) for completion Selected soil samples obtained from the borings would be submitted for the following ' analyses • TPH Purgeable by EPA Method 8015M/5030(gasoline range) ' • BTEX by EPA Method 8020 • Total Lead(ICAP/AA) DH and 7FJ94 Page.2 of b Copyrtght 1994, Kleinfelder, Inc