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`Ncter Treo+men! Plant Produrfion Sh,dy <br />Freese and Nichols, Inc. is very pleased to respond to the: <br />REQUEST FOR PROPOSALS FOR A PRODUCTION STUDY OF THE <br />WATER TREATMENT PLANT OF THE CITY OF PARIS, PARIS, TEXAS. <br />The Federaf Safe Drinking Water Act (SDWA), the first national regulation to <br />establish uniform standards for all water systems, was enacted in 1974. The SDWA <br />has been highly effective in protecting public health and has evolved tarespond to <br />new and emerging threats to safe drinking water. In 1993, a Crytosporidium <br />outbreak in Milwaukee caused: <br />➢ 400,000 people to experience intestinal iliness <br />➢ More than 4,000 to be hospitalized <br />➢ At least 50 deaths <br />There have also been crytosporidosis outbreaks in Nevada, Oregon, and Georgia <br />over the past several years. Amendments to SDWA in 1996 required EPA to develop <br />rules to balance the risks behueen microbial pathogens (Interim Enhanced Surface <br />Water Treatrnent Rule-IESWTR) and disinfection byproducts (Disinfection Byproduct <br />Rule-DBPR). These rules strengthen the protection against microbial contaminants, <br />especially Crytosporidium, and reduce potential health risks of disinfection <br />byproducts. <br />SIMULTANEOUS AND COMPETING REGULATIONS... <br />The SDWA has promulgated various drinking water regulaflons which require <br />simultaneous compliance. Some of these competing regulations direcHy conflict with <br />each other. The EPA has attempted to balance the competing regulations through its <br />microbial-disinfectants/disinfection byproduct (M-DBP) approach. The more <br />significant rules are: <br />➢ Interim Enhanced Surface Water Treatment Rule: Filter performance, <br />reduce allowable filter turbidity from 0.5 to 0.3 NTU's, disinfection profiling <br />PI:[ 13C • NiC HOLS <br />