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0 6 <br /> .` California Regional Water Quality Control Board <br /> Central Valley Region l <br /> Robert Schneider,Chair <br /> Winston H.Rickox Gray Davis <br /> Secretaryfor Sacramento Main Office Governor <br /> Environmental Internet Address: http://w .sw b,ca.gov/mgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3052 ff�llUlllll^ECO VE D <br /> 16 July 2002 <br /> JUL 1 7 2002 <br /> Ms. Julie Raming ENVIRONMENT HEALTH <br /> Environmental Affairs PERMIT/SERVICES <br /> Georgia-Pacific Corporation <br /> P.O. Box 105605 <br /> Atlanta, GA. 30348 <br /> WORKPLANFOR PURGE WATER TREATMENTAND DISCHARGE, FORMER GEORGL4- <br /> PACIFIC CORPORATON TRACY CHEMICAL PACKAGING PLANT, 75 WEST VALPICO <br /> ROAD, TRACY, SANJOAQUIN COUNTY <br /> We have reviewed the 3 May 2002 Workplan for Purge Water Treatment and Discharge, Former <br /> Georgia-Pacific Corporation Tracy Chemical Packaging Plant, 75 West Valpico Road, Tracy, San <br /> Joaquin County(Workplan). The Workplan proposes use of a 165-pound(lb) granular activated carbon <br /> (GAC) groundwater treatment system to treat approximately 300 gallons of purge water generated <br /> during each groundwater sampling event. Groundwater sampling events are conducted twice annually. <br /> Following treatment by the GAC, effluent will be contained in a temporary holding tank and sampled <br /> prior to discharge to the stormwater runoff basin. Groundwater will be discharged when laboratory <br /> analytical results confirm that the chloroform concentration in GAC effluent is 1.0 µg/1 or less. <br /> In addition to the provisions discussed in the Workplan, the discharge of treated purge water to the basin <br /> must comply with the following: <br /> 1. Treated water must not be released from the holding tank to the stormwater basin until laboratory <br /> analytical results confirm that the concentration of all volatile organic compounds (VOCs) including; <br /> chloroform(cl)trichlorofluoromethane (TCFM), 1,1,1-trichloroethane (1,1,1-TCA), and 1,1- <br /> dichloroethene (1,1-DCE)in GAC effluent are non-detect(ND) at a reporting limit of 0.5 <br /> micrograms per liter(µg/1). <br /> 2. Use of the treatment system is restricted to the treatment of groundwater generated from the Georgia <br /> Pacific site during groundwater sampling events. This may include wastewater generated during <br /> decontamination of sampling equipment. The treatment system may not be used to treat investigation <br /> derived wastes generated during borehole drilling, well installation,well development and well <br /> abandonment activities. Wastewater and fluids generated during these activities will be drummed <br /> and disposed offsite in accordance with current procedures. <br /> 3. Laboratory analytical results of GAC influent and effluent sampling will be reported in the <br /> groundwater monitoring reports during which sampling was performed. <br /> California Environmental Protection Agency <br /> Qd Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swreb.ca.gov/mgcb5 <br />