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Phase I Update and Pre-Gas Station Phase 11 Report Proposed Safeway Store#1769 Gas Station Stockton, California December 12, 2000 2.0 PHASE I EA UPDATE The purpose of this Phase I EA Update was to evaluate existing site conditions regarding known or suspected releases of hazardous substances on or near the Property with those previously reported. The Phase I EA Update was completed in accordance with the scope of work and limitations presented in HSI GeoTrans' Proposal to Conduct Phase I/ Pre-Gas Station Screening Level Assessments and Phase / Updates at Four Proposed Gas Station Sites in California: Vallejo, Carmichael, Stockton and Fort Bragg, and with the ASTM Standard Practice El 527-00. 2.1 Site Reconnaissance Prior to performing the site reconnaissance, Mr. Keith Hoofard of HSI GeoTrans reviewed the January 2000 Phase I EA report that included the Property and obtained a current regulatory agency database report provided by EDR. Mr. Matt Holt of HSI GeoTrans performed a site reconnaissance of the Property on November 27, 2000. Figures 1 and 2 illustrate the location of the Property and vicinity, and present a plot plan developed from the reconnaissance notes. Photographs taken of the site on December 6, 2000 are included in Appendix A. Current conditions observed on the Property have changed significantly since the January 2000 Phase I EA report. The Property, previously occupied by a residence, was observed to be a a parking lot under construction associated with a new Safeway store under construction immediately south of the Property. A new retail building and associated parking area have also been constructed to the west of the Property. Surrounding land use to the north and east (commercial/retail) was similar to that reported in January 2000. As shown on Figure 2, 7-11 and Exxon gasoline stations are located north and east-northeast (cross- to downgradient) of the Property. Soil and groundwater has been impacted at both stations by gasoline releases. At the time of the site reconnaissance, the Property was predominantly undeveloped bare ground. Several chain link fence panels, construction barricades, a construction debris box, a portable toilet, a large construction tool storage container, and a pile of landscape bark were observed stored on the Property. No evidence of spills or releases was observed on the Property. 2.2 Interview HSI GeoTrans interviewed Mr. Doug Jacobsen, the Property owner, on December 5, 2000 to ascertain Property use since the completion of ATC's Phase I report in January 2000. According to Mr. Jacobsen, the residence located on the Property was relocated P.pRaECTS%saf my\264�Stoddon-1o3�17�EA_update.&x 3