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• 1 1 0 • ENVIRONMENTAL SITE ASSESSMENT REPORT EXECUTIVE SUMMARY This is a Phase I Environmental Site Assessment(ESA) report of the site (Site) located at the NW corner of Center Street and Sonora Street Stockton, San Joaquin County, California, Assessor's Parcel Number (APN) 137-31-10, 11, 12, 13, 14, 16, and 17. The assessment was performed by Condor Earth Technologies, Inc., (Condor) at the request of Mr. Kevin Dougherty CCIM of First Commercial Real Estate, Stockton, California. The Phase I ESA was performed in accordance with the guidelines set forth in Practice E 1527-97, Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process, published in May 1997 by the American Society for Testing and Materials (ASTM), and in accordance with the prevailing standard of care for completing such assessments in California at this time. The purpose of the ASTM Phase 1 ESA is to investigate the potential for recognized environmental conditions' and the potential for surface, subsurface, or groundwater contamination associated with past or present activities at the Site. 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. Tile Site, and the 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 Site history is long and complex, and therefore it is difficult to develop a complete chronology. The information developed concerning the Site places it in a high-risk environmental category with many known, and possibly many unknown, off-site contaminant release locations. In addition, the historical use of portions of the Site as an auto part wrecking yard and laundry (with the possibility that dry cleaning operations were conducted with solvents) increases the risk associated with on-Site sources of contaminants. This complicates the determination of whether any discovered contaminants are from on-Site or off-site sources. The critical question concerning the Site is if any contaminants exist at the Site, and whether any off-site sources of contaminants have migrated via groundwater to impact the site. Potential off- site sources of contaminants should be evaluated by testing up-gradient perimeter of groundwater sampling points. On-Site sources of contaminants should be evaluated by random systematic sampling of soils and groundwater. The potential contaminants range from the spectrum of hydrocarbons (grease, oil, diesel, and gasoline), to solvents and metals. Additionally, a Terns in italics are defined by ASTM in Practice E 1527. See Glossary ofTenns and Acronyms(Appendix E). h II Ll CONDOR