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v Clayton ENVIRONMENTAL CONSULTANTS Mr. Robert Wooton Page 10 Stockton Savings Bank Clayton Project No. 70448.00 August 30, 1996 (PCBs). Mr. Martin stated that the elevator basin was collecting water during this past winter and was overflowing. The flooding created a hazard to employees, so the area was roped off. Mr. Martin stated that the oil odor was caused by this flooding. • Fluorescent lighting is located in the basement. A few of the lighting ballasts was visible. The ballasts appeared to be relatively old ballasts, and the labels did not state that the ballasts were non-PCB containing. Ballasts with labels not stating PCB content are generally assumed to contain PCBs. • A shop is located in the basement, and hazardous materials were observed in the shop. The following approximate volumes were observed: 10 gallons of paint and stains 1 gallon of pesticides - 1 pint of metal polish - 2 gallons of thinner In closets on several floors of the building, Clayton observed approximately 10 gallons of various cleaning compounds such as detergents and disinfectants. CONCLUSIONS Clayton has performed an update to a Phase I Environmental Site Assessment in conformance with the scope and limitations of ASTM Practice E 1527-94 of the subject property. This assessment update has revealed no evidence of recognized environmental conditions in connection with the property except: • The VISTA report identified 97 sites with documented environmental conditions within specified search parameters of the subject property. There is potential that the subject property has been impacted by petroleum releases at four of these sites based on the locations of these sites, the groundwater flow direction, and/or the magnitude or nature of the conditions at these sites. These sites are: County Parking Garage/County Motor Pool, 130 North Hunter Street; Weber Enterprises, 141 North El Dorado Street; Canlis Building, 24 South Hunter Street; and the San Joaquin County OES, 222 East Weber Street. • The fuel tank and boiler once located onsite in the basement were removed. Based on the findings of the UST locator, a section of the remote fill pipe is still present underneath the sidewalk. There is potential that soil contamination is present in the shallow soils near the remote fill pipe. • An old freight elevator is located onsite and apparently is Ieaking or leaked hydraulic oil. The hydraulic oils used in the elevator may have contained PCBs. The odor of hydraulic oil is strong in the vicinity of the elevator. The elevator mechanism is located in a sump beneath the elevator, and water has collected in the sump. K AEM RT70448170448800.232