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i 1 3 ENVIRONMENTAL SITE ASSESSMENT REPORT MULTI—MODAL STATION/SHOPPING CENTER "SIX—BLOCK" PROJECT STOCKTON, CALIFORNIA a EXECUTIVE SUMMARY 4 May 31,200I Condor Earth Technologies, Inc , performed a Phase I Environmental Site Assessment (ESA) for the Stockton Multi-Modal Station/Shopping Center located in the six blocks bounded by Miner Avenue (north), Stanislaus Street (west), Weber Avenue (south), and the Southern Pacific Railroad (east), in Stockton California The Phase I ESA was performed in accordance with the guidelines set forth in Practice E 1527-00, Standard Practice for Environmental Site Assessments Phase I Environmental Site Assessment Process, published in July 2000 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 I ESA is to assist the client with appropriate inquiry into the previous ownership and uses of the property to satisfy this element of the innocent landowner defense' to Comprehensive Environmental Response, Compensation and Liability Act(CERCLA) liability Based on the information provided by file reviews, owner/occupant questionnaires, interviews, site reconnaissance, historical research, and aerial photos, the following environmental conditions were revealed FINDINGS Condor identified three recognized environmental conditions on the site and adjoining properties(Figure A) r • • The property at 145 N Grant Street (730 E Channel Street), the former Stockton Metropolitan Transit District facility may contain USTs San Joaquin County PHS/EHD records indicate 10 USTs were present on the property in 1985 Two USTs were removed in 1987, but there are no records indicating the status of the remaining eight USTs The existence of USTs on site, both past and present, represents a potential risk to soil and groundwater The 1940 Polis City Directory for Stockton indicates a gas station was located at 802 E N finer Avenue No other records were found pertainuig to the gas station at this address There was no listing for this address in the 1945 city directory The type and number of fuel tanks installed at the gas station, and their disposition after the removal of the gas station, is not known If USTs are still on a site, then they represent a potential risk to soil and groundwater k • A groundwater investigation is currently in progress at 308 N Grant Street This property is located north of the site across Miner Avenue Records indicate high concentrations of contaminants are present in the groundwater at this property It is possible, though not known,that contaminants in the groundwater beneath this property have migrated to the southeast and are now present in groundwater beneath the site f � 1 Terms in:talus are defined by ASTM in Practice E 1527 See Glossary of Terms and Acronyms(Appendix F} i `� CONDOR