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C A M B R I A <br /> December 12 2005 <br /> Mr Richard Stifller ^; <br /> OMI-ThamEti Water Stockton Inc <br /> 2516 Navy Drive 1 ti <br /> P O Box 6249 1r fL7 <br /> Stockton, California 95206 Fl��/,r G� <br /> Re November 2005 Self-Monitoring Report <br /> Former Shell Service Station <br /> 2575 Country Club Boulevard <br /> Stockton, California <br /> Incident 98996184 <br /> SAP 136144 <br /> Dear Mr Stiffler <br /> On behalf of Equilon Entcrpnses LLC dba Shell Oil Products US, Cambna Environmental <br /> Technology, Inc (Cambria) presents this self-monitoring report for the referenced trite <br /> • GROUNDWATER EXTRACTION (GWE) SYSTEM DESCRIPTION <br /> Groundwater is extracted from well RW-IA using a pneumatic submersible pump, and then treated <br /> by four granular activated-carbon vessels in series prior to discharge into the sanitary sewer The <br /> discharge is authorized under a City of Stockton wastewater discharge permit originally issued on <br /> October 23, 2000 and revised on June 28, 2002 The City of Stockton issued a revised self- <br /> monitoring sample program in a letter dated October 10, 2003 The permit has been renewed,with <br /> some revised terms and conditions, as of November 1, 2005 A detailed description of the site and <br /> GWE system is included in Cambna's Groundwater Extraction System Installation Report dated <br /> July 27, 2001 <br /> MONTHLY COMPLIANCE ACTIVITIES <br /> Self-Monitoring Sample Date November 14, 2005 <br /> Cambria <br /> Environmental <br /> Technology,Inc Laboratory Analyses Samples were analyzed for total petroleum hydrocarbons as gasoline, <br /> benzene,toluene,ethylbenzene,xylenes,methyl tertiary butyl ether,di-isopropyl ether,ethyl tertiary <br /> *S11t, <br /> ollis Street A butyl ether, tertiary-amyl methyl ether, and tertiary-butyl alcohol by EPA 8260B, for pH by <br /> Emeryville CA 94608 <br /> Tel(510)420-0700 <br /> Fax(510)420-9170 <br />