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. � File No. 20-1147-56.hwf KLEINFELDfR August 25, 1994 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 SJCEHD to review and approve a boring 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 boring. Following obtaining approval from the SJCEHD, Kleinfelder will commence the actual field assessment. Task E02 - Drilling of One Soil Boring One (1) soil boring will be advanced to a depth of approximately 15 feet below surface grade (bsg) to get an indication of the possible presence and/or extent of hydrocarbons in the soil. The location of the soil boring is to be in the location of the former UST pulled on February 23, 1989 (Tank#4). The tank was removed prior to construction of the parking structure and subsequently was built over. The location of the former tank was approximately 182 feet west of the center line of California Street and approximately 24 feet south of the center line of Market Street. This places the boring in approximately the office section of the parking garage at the north end. An existing slab is in place and will need to be cored through to allow for access. During the advancement of the boring, soil samples will be collected at 10-feet and 15 feet below grade for lithologic classification and qualitative 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). Therefore, at this time we propose to analyze only two soil samples from the boring, After collection, the soil samples will be labeled, logged on a chain-of-custody, and immediately stored in an iced cooler. The two (2) samples will be submitted to a State certified laboratory for the following analyses: • TPH Extractable by EPA Method 8015M/LUFT (diesel range) • BTEX by EPA Method 8020/602 The samples will be analyzed on a normal laboratory schedule requiring approximately two weeks (ten working days) for completion. E7 Y:md 14/94 Copyright 1994 Kleinfelder, Inc. Page 3 of 6