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Environmental Site Assessment APN 137-31-10, 11. 12, 13. 14, 16,and 17 Page 8 • 4.3 STORAGE TANKS (INCLUDING CONTENTS AND ASSESSMENT OF LEAKAGE OR POTENTIAL FOR LEAKAGE) No aboveground storage tanks or underground storage tanks, vent pipes, fill pipes, or access ways indicating underground storage tanks were observed during the Site visit. The building and basement were unsafe to inspect. Due to historical construction and demolition activities on the Site, tanks may be present but not readily identifiable. Thus a magnetic survey to identify possible tanks is recommended. 4.4 INDICATIONS OF PCBs (INCLUDING HOW CONTAINED AND ASSESSMENT OF LEAKAGE OR POTENTIAL FOR LEAKAGE) Polychlorinated biphenvl's (PCBs) are a group of manufactured organic chemicals that have been widely used as a coolant and lubricant in transformers, capacitors, and hydraulic fluid. The manufacture of PCBs was stopped in 1977 because of evidence that PCBs build up in the environment and cause harmful effects. There were no electrical transformers or other potential sources of PCBs observed at the Site. PG&E operated a Transformer Yard two blocks south of the Site and therefore the Site has a potential for PCB contamination from this off-site source. 4.5 INDICATIONS OF SOLID WASTE DISPOSAL This ASTM Phase I ESA includes an assessment of the Site for areas that may have been filled or graded by non-natural causes (or filled with a material of unknown origin) that would suggest that trash or other solid waste Iiad been disposed on site. No evidence of the Site being used as a landfill or solid waste disposal site was found during the site reconnaissance. 4.6 ASBESTOS SURVEY An Asbestos Demolition Survey was conducted on July 25, 2000. A total of 57 asbestos bulk samples were taken from the building materials. A certain number of Asbestos containing building materials (ACBM) were found positive for asbestos. The findings for ACBM are summarized in table 2. The full report and table 2 are included in (Appendix D). Table 2 of Asbestos Findings Sprayed on Decorative 3% ! Chrysotile Roofing Material Felts 18 to 40% Chrysotile Transite Heater Line 22% Chrysotile Sheet Vinyl Flooring Red 13% Chrysotile Drywall/Joint Compound 2% j Chrysotile Skim Coat 5.0 CONCLUSIONS Condor performed this Phase I ESA in conformance with the standards set forth in ASTM Standard E 1527- 97 for a Phase I ESA. The Phase I ESA completed by Condor in July 2000, revealed the following recognized environmental conditions associated with the Site: Sampling of the one building existing on Site has documented the presence of asbestos containing building materials. The materials would need to be properly removed by an asbestos abatement contractor prior to demolition of the building. The Site, and the area surrounding the Site, has been developed for over a hundred and ten years. The area has been used for residential, commercial, retail and industrial purposes. The area and Ntim" r �i1v CONDOR