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i exist at the Site: • Surface stains of unknown origin in southeastern portion of the Site. • Former waste oil and fuel USTs. • Former septic tank and leach field west of the equipment building. • Emulsion,asphalt, waste oil and kerosene ASTs. • Hydraulic lift in the equipment building. • Wash rack and mud rinse area west of the equipment building. The abandoned leach field system associated with the fbimer wash rack should be properly closed in accordance with EPA and San Joaquin County E ivironmental Health Division (SJCDEH) requirements. A determination of the extent of potential soil impacts arid an assessment of groundwater occurrence and quality associated with the recognized environmental conditions will be necessary prior to evaluating remedial response actions for specific future land use options. Targeted site investigations should be designed to evaluate potential soil and groundwater impacts with respect to specific project requirements prior to design and construction of any proposed onsite improvements. Soil and groundwater generated from excavations at the Site may re juire treatment and/or disposal. Open cases regarding unauthorized releases from fuel USTs are not referenced within the site vicinity. An active Chevron service station, Map ID No. 1 is located adjacent and east of the Site. Due to the lack of documented releases and soil and ground ater impacts at the Chevron facility and the downgradient location from the Site,the Chevron facility has a low potential of impacting the Site. A review of previous surveys and the results of the building surveys performed at the Site by Geocon, indicate the presence of asbestos-containing building materials (ACBMs) in the office, equipment building, warehouse and gas house. Lead-containing paints (LCPs) were further identified in the office, equipment building, warehouse, gas house and sealand storage containers. Based on our findings,Geocon recommends the following: • Retain a registered asbestos abatement contractor to remove and dispose of ACBM identified during this survey that will be impacted by renovatioii or demolition activities. • Notify contractor(s) that will be conducting renovation work and related activities of the presence of ACBM and LCP in their work areas and instruct the contractor(s) not to disturb ACBM or LCP during their work (i.e., provide the contractor[s] with a copy of this report and a list of ACBM removed by the asbestos abatement contractor during any abatement activities). • Treat all paints at the Site as lead-containing for purposes of determining the applicability of the California Occupational Safety and Health Admi istration (Cal/OSHA) lead standard during Project No.58225-06-146 -11- May 25,2001