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California Regional Water Quality Control Board <br /> vCentral Valley Region IAI Il; : <br /> Terry Tamminen Robert Schneider,Chair <br /> Arnold Schwarienegger <br /> Secretary for 11020 Sun Center Drive#200 Rancho Cordova,CA 95670-6114 2'26 Governor <br /> Environmental (916)464-3291•Fax(916)464-4704 <br /> Protection http://w .sw b.ca.gov/mgcb5 <br /> 25 May 2004 <br /> Mr. Cecil Dillon Mr.Richard Bokides Mr. Navtej Dhingsa <br /> Flag City Ltd. Partnership Bokides Family Ltd. Partnership First Investment Flag City, Inc. <br /> 1820 W. Kettleman Lane, Suite E 6421 Capitol Avenue 517 Coronawood Lane <br /> Lodi, CA 95242 Lodi, CA 95242 Carmichael, CA 95608 <br /> REPORT REVIEW, FLAG CITY CHEVRON, 6421 CAPITOL AVENUE, LODI, SAN JOAQUIN <br /> COUNTY, CLEANUP AND ABATEMENT ORDER (C&A)NO. 5-00-700 <br /> I reviewed the Quarterly Report—First Quarter 2004(Report), received 4 May 2004, submitted on <br /> Chevron's behalf by Advanced GeoEnvironmental, Inc (AGE). The Report includes the analytical results <br /> of the quarterly groundwater monitoring event conducted on 16 March 2004, and a summary of the <br /> groundwater pump and treat system(treatment system) operations during the First Quarter of 2004. The <br /> Report documents problems with equipment failures of the groundwater extraction and treatment systems. <br /> The Report states extraction wells EW-4, -5, -7, and-8 were operating until 12 December 2003, when <br /> failure of the holding tank water level sensors (sensors) resulted in shutdown of the entire treatment <br /> system. AGE replace the failed sensors and restarted the treatment system on 7 January 2004, utilizing <br /> extraction wells EW-2, 4, -5, -7, -8 and -10. The following week(14 January 2004)AGE discovered that <br /> the submersible pumps in extraction wells EW-4 and -7 had failed. Extraction well EW-6's submersible <br /> pump was removed and placed into extraction well EW-4, which was brought back online with extraction <br /> wells EW-5, -8, and-10. The Report recommends "Continued groundwater extraction (pump-treat)from <br /> wells EW-4, EW-5 and EW-8; wells EW-7 and EW-10 should be `added'to the on-line wells that <br /> continuously extract groundwater." However, extraction well EW-7 does not have a pump and is not <br /> operating. <br /> In a letter dated 22 August 2003, I concurred to your request to alternate groundwater extraction from <br /> extraction wells EW-7, -8, -9, and-10, while continuously operating the remainder of the extraction wells. <br /> It was my understanding that all ten of the extraction wells were in use. <br /> In a phone conversation on 17 May 2004 with Tim Cuellar, AGE Project Geologist(AGE), I questioned: <br /> • Why two of the extraction well pumps(pumps) fail during one week? AG responded that perhaps <br /> the pumps were wearing out due to age. I suggested that AGE consider replacing or conducting <br /> preventative maintenance on the remaining pumps. <br /> • Why only some of the extraction wells were operating? AGE stated that the extraction wells now <br /> operating were necessary for system operation. <br /> California Environmental Protection Agency <br /> ped Recycled Paper <br />