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California P—aional Water Quality Contr-1 Board <br /> Central Valley Region <br /> Qa; Karl E. Longley.ScD, P.E.,Chair <br /> Linda S.Adams 11020 Sun Center Drive H200,Rancho Cordova,California 95670-6114 Arnold <br /> Secrerart,for Phone(916)464-3291 -FAX(916)464-4645 Schwarzenegger <br /> l;nv ironmen lal Governor <br /> Prorecnon http:/hvxsw.ti atcrboards.ca.gov/ccntrah allcv' <br /> 13 March 2009 C VELO <br /> Mr. Tim Van Domelen MAR 1 6 2009 <br /> Manager, Environmental Health, Safety, and Security ENVIRONMEW HEALTH <br /> J.R. Simplot Company PFRA41T/SERVjcr:S <br /> 16777 Howland Road <br /> Lathrop CA 95333-0198 <br /> MONITORING AND REPORTING PROGRAM NO. R5-2008-0388 — J.R. SIMPLOT <br /> COMPANY, 1677 HOWLAND ROAD, LATHROP, SAN JOAQUIN COUNTY <br /> At the request of J.R. Simplot and AMEC/Geomatrix, California Regional Water Quality <br /> Control Board, Central Valley Region (Regional Water Board) staff has created this letter to <br /> clarify the requirements of Monitoring and Reporting Program (MRP) No. R5-2008-0388, <br /> issued 5 November 2008. <br /> Table 1 of the MRP presents the list of chemical constituents and monitoring parameters that <br /> are required to be included in sampling and monitoring activities. Although Table 1 is explicit <br /> about the required frequency of monitoring for the listed parameters in groundwater, the <br /> frequencies of monitoring for the leachate collection and recovery system, the Class II surface <br /> impoundments, the storm water surface impoundment, and the unsaturated zone need to be <br /> specified individually. In order to clarify the requirements, the following list specifies <br /> frequencies of monitoring and which parameters from Table 1 of the MRP should be included <br /> in each sampling and monitoring event. <br /> Leachate Monitoring <br /> Monitoring Parameters (sulfate, nitrate, chloride, ammonia, and total dissolved solids) - <br /> quarterly <br /> General Minerals (carbonate, bicarbonate, potassium, phosphate, calcium, sodium, total <br /> alkalinity, and pH) - annually <br /> Results reported semiannually <br /> California Environmental Protection Agency, <br /> Rc�r,led MI/Icr <br />