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Clayton_ E til IHU`1?f\t i.. Executive Summary American Savings Bank retained Clayton Environmental Consultants, Inc. to conduct a Phase I environmental assessment of its building located at 222 North El Dorado Street in Stockton, California. The assessment was authorized by Mr. Allerton F. Blake, American Savings Bank project manager, on January 16, 1991, with purchase Order No. 38308. The assessment and survey were performed to provide an independent, professional opinion of the environmental conditions and potential environmental liabilities, if any, associated with the site. Mr. Sami Malaeb, Clayton environmental engineer, inspected the site on January 18, 1991, The assessment also included a review of available documents pertaining to the site and its local area. A sample of potable water was collected and analyzed for lead. Our findings and recommendations, based on the results of this investigation, follow. • The site has been used as a banking facility since 1961. Prior to this date, two smaller buildings existed onsite. • No visible evidence of underground storage tanks was observed onsite. • No visible evidence of stained soil, chemical contamination, hazardous materials was observed onsite. • The electrical transformer serving the subject site is located offsite in an underground concrete vault. No leak was observed from this transformer. It is not known whether this transformer contains regulated concentrations of polychlorinated biphenyls (PCBs). • Suspect asbestos-containing building materials observed throughout the building included ceiling panels, wall coverings, pipe insulation, and floor tile. Proper sampling and laboratory analysis is the best way to confirm or deny the presence of asbestos. An asbestos survey can be deferred until renovation or demolition threatens to disturb the suspect materials. • There are no National Priority List or State of California Superfund sites within 1 mile of the subject site. • There are several listed leaking underground tanks within 1/2 mile of the subject site. One facility with documented groundwater contamination was located upgradient to crossgradient and within 200 feet of the subject site. This facility is the car repair shop and former Shell Gasoline station, located at 141 North El Dorado Street. Our record review revealed that a gasoline leak at this facility caused petroleum hydrocarbon contamination of the groundwater. This contamination may be migrating laterally to the east and under the subject site, • The drinking water in the building was sampled and analyzed for total lead. Lead was not detected in the sample (the detection limit was 0.002 mg/L).