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v Clayton - ENVIRONMENTf AL. CONSULTANTS Mr. Robert Wooton Page 9 Stockton Savings Bank Clayton Project No. 70448.00 August 30, 1996 northwest of the subject property) and the expected southeast groundwater flow direction. The other listed facilities in the VISTA report are not expected to present an environmental concern to the subject property because of their distance from the subject property, their downgradient or crossgradient position with respect to the subject property, and/or the nature of the environmental condition. Site Walkthrough Mr, D. Edward MacDaniel, a Project Geologist with Clayton's San Francisco Regional Office, visited the subject property on July 30, 1996, to conduct an inspection of the property. Mr. MacDaniel made the following observations: • In the basement, Clayton observed that the pipe insulation identified in the previous Clayton Phase I Environmental Site Assessment to contain asbestos has been abated. Several areas on walls were covered with tape and plastic sheeting, presumably as part of the ACM abatement. In several areas, the tape was coming off. No changes in the suspect ACM observed during the previous Clayton Phase I Environmental Site Assessment in the rest of the building were noted during this update. • A new dry chemical type transformer was present in the basement near the former boiler location. • Some minor staining of the floor was observed near the water heater located adjacent to the former boiler area; the staining did not feel oily. • Three steel drums from various manufacturers of refrigerant 113 were present in the basement; three drums originally would have contained a total of 400 pounds of refrigerant. An oily residue was present on the top of all the drums. No secondary containment was present around these drums. No staining was observed around these drums. According to Mr. Peter Martin of Property Management Experts, these drums contain the oil/water mixture removed from the elevator compressor during servicing by Otis Elevators personnel. • A sump/catch basin was located in the basement in the same room where the boiler and associated fuel tank were located. WAter was present in the sump/catch basin, and a sump pump was located in the sump. • A freight elevator is present in basement; the elevator was used to move freight between the basement and an access area in the sidewalk above. The area around the elevator was roped off. A strong hydraulic fluid odor was present in the area. Water was present in the sump containing the elevator equipment. PVC piping was present leading to the sump. Given the age of the elevator, there is a potential that the hydraulic fluids used in the elevator could contain polychlorinated biphenyls K AEM R 1 P 7044 8170448 800.23 2