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California Regional W • <br /> ater Quality Control Board . <br /> Central Valley Region <br /> Winston H.Hick., <br /> Secretary,fo, Robert Schneider, Chair <br /> Protection ` <br /> Environmental <br /> Sacramento '`' <br /> Internet Address: htt ;// Main Office <br /> 3443 ROutler Road,Suite P �v.swrcb.ca.gov/rwgcb5 Gray Davis <br /> A,Sacramento,Califomia 95827-3003 Governor <br /> Phone(916)255-3000•FAx(916)255-3015 <br /> 9 May 2003 <br /> MAY 12 2003 <br /> Steve Hill ENVIROAIMENT HEALTH <br /> Modesto Irrigation District Matt Machado PERMIT//SERVICES <br /> 1231 Eleventh Street City of Ripon <br /> Modesto, CA 95352 259 N. Wilma Avenue <br /> Ripon, CA 95366 <br /> REPORT REIJIEW, MID ELECTRIC CENERATIONSTATIONPROJECT, CITY <br /> OFRIPON <br /> WASTEWATER TREATMENT PLANT, SANJOAQUINCOUNTy <br /> Staff has reviewed the 25 March 2003 Modesto Irrigation District(MID) correspondence and <br /> Technical Memorandum prepared by CH2MHILL that describes the City Of Ripon wastewater system, <br /> the wastewater sources that will be generated by the proposed MID Electric Generation Station <br /> (MEGS)project, and the change in wastewater quality that is anticipated by the proposed discharge to <br /> the City wastewater treatment plant(WWTp). <br /> Proiec�ory <br /> On 30 December 2002 you informed the Regional Board of plans to significantly change the character <br /> Of the industrial wastewater discharged to the City of Ripon W WTp presently, the City accepts <br /> industrial wastewater from two industries, Nulaid and Nestles. Because the Nestles wastewater <br /> consists of groundwater extracted and treated prior to discharge, that wastewater is good quality and <br /> dilutes the concentration of the Nulaid wastewater. The Regional Board was informed that the City <br /> was considering discontinuing the Nestles discharge and replacing it with industrial wastewater from <br /> an electrical power generation facility. Because such a change would likely result in a considerable <br /> change in wastewater quality, on 13 January 2003 the Regional Board requested a Report of waste <br /> Discharge (R WD) to allow revision of the WDRs prior to initiation of the new discharge. <br /> On 27 February 2003 MID, City of Ripon, and Regional Board staff met to discuss the RWD submittal <br /> requirement. Based on the discussion in that meeting, you elected to submit a technical report that <br /> evalu.�red rhe impact of the MEGS project wastewater to the City W WTP to allow th <br /> to reconsider of the material change in wastewater quality determination. e Regional Board <br /> 27 March 2003 Correspondence and Technical Report <br /> On 27 March 2003 MID submitted a technical report that describes the estimated impact of discharging <br /> the MEGS project wastewater t0 the City of Ripon's domestic wastewater treatment system. The <br /> estimated impact is presented in the table below: <br /> California Environmental Protection Agency <br /> Q,Recycled Paper <br /> fhe 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.swrcb.ca.gov/mgeb5 <br />