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t� <br /> GeoStrateg ies <br /> MUTED PHASE I ENVIRONMENTAL SITE ASSESSMENT <br /> at <br /> Former Unocal Station No 0187 <br /> 437 East Miner Avenue <br /> Stockton, California M <br /> AY � 5 <br /> 1995 <br /> Report No. 4827 04-1 ENPE �M�Nrq <br /> r;Ql Ait tc 47N <br /> INTRODUCTION <br /> At the request of Unocal Corporation, GeoStrategies (GSI) conducted a Limited Phase I <br /> Environmental Site Assessment for the above referenced site (Figure 1) The purpose of <br /> this investigation was to assess the potential for environmental impact at properties adjacent <br /> to the subject site and evaluate whether any of these properties could have contributed to <br /> the dissolved hydrocarbon plume beneath the subject site Upon review of the available <br /> data, one site of potential concern was identified immediately south of the subject site, and <br /> a title search was performed for this property <br /> GSI contracted with Vista Information Solutions, Inc (Vista) of San Diego, California to <br /> perform a computerized search of available public databases A copy of the Vista report <br /> is included in Appendix A In addition, GSI reviewed available database information from <br /> the San Joaquin County Public Health Department (SJCPHD), available aerial photographs <br /> at the San Joaquin County Surveyor's Office (SJCSO), and available fire insurance maps <br /> from the Sanborn Mapping and Geographic Information Service (Sanborn Company). <br /> Copies of the available Sanborn maps are included in Appendix B Vista also performed <br /> the title search A copy of the title search is included in Appendix C Data obtained from <br /> these sources are discussed below <br /> DATABASESEARCH <br /> Vista searched 16 databases and identified a total of 117 sites within a one-mile radius of <br /> the subject site Twenty four of these sites were within 118-mile of the subject site, 50 <br /> sites were between 118 and 114-mile of the subject site, 42 of these sites were between 114 <br /> and 112-mile of the subject site, and one site was between 112 and one-mile of the subject <br /> 482704-1 <br /> 3035 Prospect Park Drive, Suite 110 - Rancho Cordova, CA 95670 - (916) 631-1314 9 Fax (916) 631-1317 <br />