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File No. 20-3941-OLE01 kn KLEINFELDER January 22, 1997 PROPOSED SERVICES Task E01 - Permitting and Pre-Field Activities It has been Kleinfelder's experience that this proposal contains sufficient detail and information to be submitted to the PHS/EHD to review and approve a boring/well permit. Kleinfelder can prepare a boring /well permit application, a proposed boring/well location map, and a health and safety plan for submittal along with this proposal to PHS/EHD. Additionally, the permits must be approved prior to drilling the borings. Following obtaining approval from the PHSIEHD, Kleinfelder will commence the actual field assessment. Task E02 - Drilling of One Soil Boring One (1) soil boring will be advanced at an angle to a depth of approximately 35 feet below surface grade (bsg) immediately beneath the tank cluster. It is Kleinfelder's understanding based on the station's December 30, 1988 PHS/EHD permit, that the tank cluster contains 3 underground fuel storage tanks (one 10,000-gallon unleaded fuel tank, one 6,000-gallon diesel fuel tank and one 5,000-gallon unleaded fuel tank). Therefore, a typical cross-section of the 10,000-gallon tank installation is attached. The typical includes a view of the angle boring also. Based on the arrangement, we would not retain any samples for chemical analysis from above 15 feet in depth. The tank locations would be further confirmed in the field using a utility locator, and based on field evidence and interviews with the existing operator. During the advancement of the boring, drilling returns will be examined for lithologic classification and qualitative field screening, with an organic vapor analyzer (OVA). The OVA measures ionizable compounds in air in parts per million by volume (ppmv). Lithologic classification will be based on the Unified Soil Classification System (USCS). Since it is common practice to bed underground fuel storage tanks of this size at a depth of 12 to 15 feet below ground surface (bgs), only soil samples from the 15, 20, 25, 30 and 35 foot depths for quantitative chemical analysis. Currently, based on your correspondence and our experience, we anticipate groundwater in the vicinity of the project site to be present at a depth of 65 feet bsg. Therefore, at this time, we propose to analyze only 5 soil sample from the boring. 20-3941-01.EO11207PE026 Page 2 of 9 0 1997, Kleinfelder, Inc.