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M. Scott Mansholt -2 - 10 February 2005 <br /> ChevronTexaco <br /> Mountain House Stream Restoration <br /> Q4-2004 and Annual Summary Monitoring Report <br /> hydrocarbons as diesel (TPH-d). All corresponding TPH-d analysis was non-detect for all effluent <br /> samples and the polynuclear aromatic hydrocarbons (PAHs) were also non-detect for all samples. <br /> Based on the Annual Summary, approximately 43 million gallons of treated groundwater has been <br /> discharged to Field G through the end of the quarter/year; this translates to approximately 258,000 <br /> gallons of extracted groundwater treated per day. The treatment system has been successful removing <br /> petroleum hydrocarbon compounds from the extracted groundwater; treated groundwater discharged to <br /> Field G has been non-detect for petroleum hydrocarbons. According to SAIC staff, the project is <br /> approaching completion and removal of the dewatering wells and treatment system shut down is <br /> anticipated in the next few weeks. <br /> General mineral analysis was conducted as required; however, electrical conductivity was omitted from <br /> the table. SAIC representatives have been notified of this omission and a revised table will be provided. <br /> If you have any comments, please contact Dean Hubbard at(559) 445-5179. <br /> SHELTON R. GRA C. DEAN HUBBARD <br /> Senior Engineering Geologist Engineering Geologist <br /> RG No. 6357 <br /> cc: Michael Infurna, San Joaquin County EHD, Stockton <br /> Luis Mercado, SAIC, Sacramento <br />