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3 <br /> M. Scott Mansholt -2 - 10 February 2005 <br /> ` ChevronTexaco <br /> Mountain House Stream Restoration <br /> Q3-2004 Monitoring Report <br /> startup. Based on SAIC's survey of Field G, approximately ten percent of the surface area has received <br /> treated groundwater without ponding or runoff from the field. <br /> Analysis of influent groundwater entering the system for treatment ranged from non-detect to 170 ug/L <br /> total petroleum hydrocarbons as diesel (TPH-d); the corresponding TPH-d analysis reported non-detect <br /> for all effluent samples. With the exception of naphthalene concentrations reported equal to the method <br /> detection limit in two weekly influent samples, all polynuclear aromatic hydrocarbons (PAHs) were non- <br /> detect. <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 /> The Q4-2004 project compliance monitoring report, dated 26 January 2005 was submitted and is <br /> currently being reviewed by Regional Board staff. <br /> If you have any comments, please contact Dean Hubbard at (559) 445-5179. <br /> SHELTON R. GRAY 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 />