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fY <br /> WESTERN ss,�E QST BEA!�'P ST-R-ET <br /> . A-�,� Com� A CTO 45113e3-57 .1 <br /> ` P ZGISTERED G1 OLOG.STs FAX(3,30),652-fd273 <br /> li egenc2i net <br /> Mr Richard Stiffler <br /> Environmental Control Section October 31, 2005 <br /> Department of Municipal Utilities <br /> City of Stockton <br /> 2500 Navy Drive <br /> Stockton, CA 95206-1191 <br /> (209) 937-8740 Fax (209) 937-8708 <br /> RE October 2005 sewer discharge report for 1876 Country Club BIvd , Stockton, CA <br /> Dear Mr Stiffler <br /> The following is the required monthly report documenting sewer discharge activities <br /> from 1876 County Club Blvd , Stockton, California On May 23, 2005 a revision to <br /> treatment system was submitted to your office discussing modifications to the treatment <br /> system for removal of TBA Western Geo-Engineers completed the modifications to the <br /> treatment system and restarted the system on August 25, 2005 Discharge from the 5th <br /> water carbon was diverted into a 22,000 gallon capacity Baker tank, with no discharge to <br /> sewer A sample of the discharge treated water was obtained after 16,623 gallons had <br /> been processed to determine if the treatment system modifications are successful in <br /> removing TBA This sample dated October 3, 2005 was analyzed for pH (EPA 150 1), <br /> Total Petroleum Hydrocarbons (EPA 418 1), BTEX, MTBE, TBA, DIPE, ETBE and <br /> TAME (EPA 8260) All sewer discharge parameters were met From October 12 thru <br /> October 17, 2005 15,633 gallons of the I6,623 gallons stored in the Baker Tank were <br /> discharged to the sanitary sewer Once the Baker Tank discharge had been completed, <br /> Pumping from excavation well MW10 through the treatment system into the Baker Tank <br /> occurred (October 17, 2005 thru October 19, 2005), pumping 17,292 gallons thio the <br /> treatment System into the Baker Tank On October 20, 2005 water samples of this stored <br /> treated water were obtained These samples were analyzed for pH (EPA 150 1), Total <br /> Petroleum Hydrocarbons (EPA 418 1), BTEX, MTBE, TBA, DIPE, ETBE and TAME <br /> (EPA 8260) All sewer discharge parameters were met From October 25, thru October <br /> 27, 2005 this water was discharged to the sanitary sewer Currently the 22000 gallon <br /> Baker Tank contains approximately 1041 gallons of treated groundwater This water has <br />