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• s <br /> California Regional Water Quality Control Board <br /> Central Vallev Region <br /> Robert Schneider.Chair <br /> Winston iv .tion Gras Davis <br /> Secrerarp'or Sacramento Main Office Governor <br /> Environmenr.a i._—et Addrnas: cxtJhvwwsvrha.¢ov/-ncgcSS <br /> Protection 3453 R,-•c_=Road,Suite A,Sacrmnrnto,California 95827-3003 <br /> ?hone(916)25 5-3000•FAX(916)255-3015 <br /> ATTACHMENT E <br /> 10 September 3001 <br /> REQT- EMENT TO SUBMIT MON?TORL,iG DATA <br /> The Regional Water Quality Conzol Board (Board) is required to protect and enhance the beneficial uses <br /> of s,L:face and ground-.eaters in the Region. As part of that effort,National Pollutant Discharge <br /> Elimination System (N?DES) Pe--�_ are adopted which prescribe effluent limits for the types and <br /> concentrations of chemical and pc_.seal constituents which can be safely discharged. In order to prepare <br /> appropriate NPDES P==its, it is necessary to have adequate characterization of the. discharged effluent <br /> and the receiving Ovate <br /> The following is a requirement that you collect effluent and receiving water samples and have them <br /> analyzed for variety ofpotential were constituents. In most cases this monitoring will be in addition <br /> to monitoring required i*: your NIDDHS Permit. To the extent that there is overlap between this request <br /> and moaitorinz already.-eina done Wider your Permit, the monitoring need not be duplicated. This <br /> requirement is brought on by a n�y.ber of factors: <br /> 1. On 2 March 2000, - e State Water Resources Control Board adopted the Policy for Implementation <br /> of Toxics Standards for Inland Sw-ace Waters, Enclosed Bays, and Estuaries of California, also <br /> known as the State Implementation Policy(SIP). The SIP established methods of evaluating <br /> receiving water criteria and developing effluent limitation in NPDES Permits for the priority <br /> pollutants contained in the US Environmental Protection Agency's (USEP A) California Toxics Rule <br /> and portions of USEPA's Natior-al Toxics Rule. Section 1.2 of the SIP directs the Board to issue <br /> water Code Section 13267 le:ze- -o all NPDES dischargers requiring submittal of data sufficient to <br /> (1) determine if priority pollutant: require effluent limitations (Reasonable Potential Analysis) and <br /> (2) calculate water quality-based eluent limitations. Further, Section 2.4 of the SIP requires that <br /> each discharger submit to the Regional Boards reports necessary to determine compliance with <br /> effluent limitations for priority pollutants in permits. Sections 2.4.1 through 2.4.4 of the SIP provide <br /> minimum standards for analyses and reporting. (Copies of the SIP may be obtained from the State <br /> Water Resources Control Board., or downloaded from httD://www.swrcb.ca.2ov/iswn/final.Ddf.) To <br /> implement the SIP, eluent and-°reiving water data a-e needed for all priority pollutants. Effluent <br /> and receiving water pH and hardness are required to evaluate the toxicity of certain priority <br /> pollutants (such a heavy metals) where the toxicity of:he constituents varies with pH and/or <br /> hardness. Section 3 of the SIP prescribes mandatory monitoring of dioxin congeners. <br /> California Environmental Protection Agency <br /> ,!% Recvcled Paner <br />