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k'9 KLEINFELDER File No. 20-1147-56.E01 September 19, 1994 PROPOSED SERVICES Task E01 - Permitting and Pre-Field Ac tivities 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 Two Soil Borings Two (2) soil borings will be advanced to a depth of approximately 171/2 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 first 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. The location of the second borings is to be at the north end of the former tank location, approximately 10 feet away from the original excavation. This places the boring in the sidewalk area along Market Street. It is possible that the existing sidewalk will need to be cored through to allow for access. During the advancement of the borings, soil samples will be collected at 15-feet and 171/2 feet below grade for lithologic classification and qualitative field screening for the first boring, and at 12'/2 feet, 15 feet and 171/2 feet for the second boring. 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). At this time we propose to analyze five soil samples from the borings. $TH.,md 14194 Copyright 1994 Kleinfelder, Inc. Page 3 of 6