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Identified Contamination Source Evaluation <br /> 10. Mr. Chiu indicated that three empty It appears that equipment fueling <br /> above-ground fuel storage tanks took place on the Site in the past. <br /> were located on the Site at the time The typical standard of care for <br /> of his purchase. The tanks have SSCRs does not require any further <br /> since been removed from the Site. investigation of former above- <br /> (Past on-site) ground storage tanks. <br /> 11. Seven pole-mounted transformers The utility provider may have <br /> are present on the Site. Most were additional information about the <br /> labeled with stickers indicating they PCB content of the transformers. <br /> are free of PCBs. (Current on-site) <br /> 12. Underground gas pipeline marker The utility provider may have <br /> signs were observed along the additional information about <br /> western property line. (Current on- pipelines in the area. <br /> site) <br /> 13. One gas well was identified on the Gas well development can generate <br /> Site, a plugged well identified as brine and hazardous materials. The <br /> the Chevron USA Inc.'s well on the Site and those on the <br /> "Saunders" 1 (API 0407700034). surrounding properties were drilled <br /> The well was drilled and and abandoned under the oversight <br /> abandoned in 1963. Three of DOGGR. Environmental risks are <br /> additional gas wells, including two present with any well drilling or <br /> plugged, dry wells and an idle well, drilling fluid disposal. Idle wells are <br /> were identified within approximately considered a particular problem <br /> one-quarter mile of the Site. The because they can provide a conduit <br /> southern portion of the Site is for contaminants to migrate to <br /> located within the Lathrop gas field. drinking water or the surface. <br /> (Past on-site, current and past off- However, no evidence was <br /> site) encountered to indicate specific <br /> contamination affecting the Site as a <br /> result of past gas well operations. <br /> 14. Three adjacent properties were No evidence was encountered to <br /> identified on San Joaquin County indicate contamination affecting the <br /> lists of hazardous materials Site as a result of operations at <br /> handlers, hazardous waste these adjacent properties. <br /> generators, and/or above-ground <br /> storage tank facilities. (Current and <br /> past off-site) <br /> LOGE 20-16 12 <br />