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4 •.r <br /> California Regional Water Quality Control Board .' <br /> � _3 <br /> •S�Central Valley Region <br /> Winston H.Hickox n , ��` Steven T.Butler,Chair Gray Davis <br /> Secretaryfor Sacramento Main Office Governor <br /> Environmental <br /> Internet Address: http://www.swrcb.ca.gov/—rwgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 8 May 2000 <br /> Mr. Tom Guido <br /> Triple E Produce <br /> P.O. Box 239 <br /> Tracy, California 95378 <br /> SCHEDULE FOR EXTRA CTION AND TREATMENT OF GROUNDWATER, TRIPLE E <br /> PROD UCE, TRACY, SAN JOAQ UIN COUNTY <br /> I have reviewed the 20 April 2000 First Quarter 2000 Groundwater Monitoring Report(QMR) <br /> submitted by Condor Earth Technologies, Inc. (Condor) for Triple E Produce. Triple E currently <br /> extracts groundwater continuously from wells MW-4A and XW-1. The QMR recommends reducing or <br /> ending the groundwater extraction to observe the chloroform concentration response. Condor concludes <br /> that a lack of chemical rebound during the system shutdown would demonstrate that"...the technical <br /> limits of remediation technology have been reached." While I do not agree with Condor's conclusion, I <br /> do agree that a temporary shutdown of the system to observe the aquifer response may provide valuable <br /> information. <br /> Therefore, Triple E may shut down the groundwater extraction system. Triple E should shut down the <br /> system by 1 June 2000 and conduct the normally scheduled second quarter groundwater monitoring <br /> within two weeks of the system shutdown. During the system shutdown, Triple E needs to reduce the <br /> volume of water stored in the aeration pond, preferably drying the pond, if possible. Groundwater <br /> monitoring will continue as scheduled during the third and fourth quarters of 2000. No more than 30 <br /> days after the fourth quarter sampling (which shall be conducted no later than 180 days after the second <br /> quarter sampling), Triple E shall schedule a meeting with Board staff to discuss groundwater monitoring <br /> results during the system shutdown and future remediation needs. <br /> If you have any questions regarding the groundwater remediation, you may call me at(916) 255-3077. <br /> J LO,Q <br /> ssoc ate Engineering Colo i t <br /> cc: Mr. Mike Infurna, San Joaquin County Health Department, Stockton <br /> Mr. Michael Campos, Washburn, Briscoe &McCarthy, Sacramento <br /> Mr. John Kramer, Condor Earth Technologies, Sonora <br /> California Environmental Protection Agency <br /> Qa Recycled Paper <br />