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Identified Contamination Source Evaluation & Recommendations <br /> 11, The Raspo Property, 26457 S. Banta This facility is co-located with the <br /> Rd., is listed on the EHD's UST Site Chevron, Lyoth--Offsite case discussed <br /> Mitigation database with a status of above. According to a Preliminary Site <br /> "environmental assessment." It is Assessment Phase 11 Report, soil borings <br /> located approximately 450 feet north of were collected in the vicinity of former <br /> the Site. (Past off-site) underground and above�ound storage <br /> tanks at this facility No petroleum <br /> hydrocarbons or vglatl aromatic <br /> compounds were detecte-T As a result. <br /> no impact to the Site is anticipated. <br /> 12 The Defense Distribution San Joaqui No evidence was identified suggesting <br /> CA—Tracy, 25600 S. Chrisman Rd., i thepresence of contamination from the <br /> located to the west of the Site. -E&C on the subject Site. According to <br /> GeoTracker lists 27 separate cases for URS, It appears that the "hot spots" of <br /> this facility, abbreviated as DDJC-Tracy. groundwater contamination are located to <br /> Envirostor lists three cases, including a the north of the Site and are migrating <br /> Federal Superfund listing. The northeast (away from the Site). <br /> contaminants of concern include <br /> pesticides, herbicides, chlorinated <br /> hydrocarbons, heating oil/fuel oil, PCE, <br /> and TCE. Soil, soil vapor, and <br /> groundwater have been impacted. <br /> "Environmental studies began at DDJC- <br /> Tracy in 1980. Based on the results, the <br /> installation was added to the National <br /> Priorities List in 1990. DDJC-Tracy <br /> currently pumps and treats groundwater <br /> contaminated with volatile organic <br /> compounds, metals, and pesticides. The <br /> treated water is then discharged back to <br /> groundwater by injection and <br /> percolation" (GeoTracker, 2012). The <br /> Second Five-Year Review Report (URS, <br /> 2012) presents evidence of a <br /> preferential hydrogeologic pathway to <br /> the northeast from the DDJC-Tracy <br /> facility (away from the Site of the current <br /> investigation). Based on maps provided <br /> with this report, it appears that the "hot <br /> spots" of the groundwater contaminant <br /> plumes from the DDJC-Tracy facility are <br /> located north of the Site of the current <br /> investigation. (Current and past off-site) <br /> LOGE 1303 Page 12 <br />