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Ph(Hle: 14DCA04VATER <br /> 1226 Enterpriw F&X: I 2DO-466-Mos <br /> Stockton CA,%2M <br /> Wednesday September 17,2003 <br /> Birds Nest CDC <br /> Attn:Wayne Storrs <br /> 20700 River Rd <br /> Ripon,CA <br /> RE:20700 River Rd.,Ripon CA <br /> Reduction of Nitrates <br /> Dear Wayne, <br /> Per Your water analysis of ppm of Nitrates,I Propose that we install our HC150TC utilizing the <br /> Purolite A-520B Macroporous Strqng base Anion Exchange Resin. This resin is specifically <br /> designed for the reduction of nitrates and utilizes sodium chloride for the regeneration process. <br /> The HC150TC Is recommended due to the existing size of plumbing,2 inch, M maintain a flow <br /> rate up to 78 gallons per minute. Utilizing your test results of 71 on the nitrates we will set the <br /> unit to regenerate after 8600 gallons leaving a reserve of 2200 gallons prior to the resin being <br /> exhausted. <br /> I have attached the specifications sheet for both the HC150TC and the A-520E resin. <br /> If you have any questions please contact me at 1-800-20,AVATER. <br /> Sincerely, <br /> Stuart H.Dennis <br />