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MOUNTAIN HOUSE <br /> MASTER PLAN CONSISTENCY FINDINGS <br /> Project Action or <br /> Consis ` Conditions o <br /> Section tency Approval <br /> 1 Heading# Title Text Y/N/NA Finding of Fact/Analysis and Evidence of Compliance " (COA) <br /> Raw Water Reservoir The treatment process shall <br /> include a raw water storage system designed and built <br /> in a manner so as to assure one day of stored raw water <br /> supply equivalent to the water treatment plant's daily <br /> capacity.The raw water reservoir's primary function is <br /> to serve as a presedimentation basin. This preliminary <br /> sedimentation reduces silt and settleable organic matter <br /> prior to chemical treatment. The secondary function <br /> of the raw water reservoir is to serve as emergency <br /> storage in case of temporary shutdowns of the raw <br /> water pump station due to maintenance or repairs. <br /> Additionally,the benefits of the raw water storage <br /> include the ability to provide adequate treatment using <br /> contact clarification in lieu of a conventional treatment <br /> Water plant and to minimize the possibility of an interruption <br /> 1240 12.3.6.1.b.(1) Treatment Plant in service. Y See# 1236 None. <br /> Disinfection(Ozone Contractors: The Disinfection <br /> (ozone)contractors serve as a pretreatment oxidation <br /> and Disinfection process. <br /> Water <br /> 1241 12.3.6.1.b.(2) Treatment Plant <br /> Clarifier: The clarifier provides flocculation and <br /> sedimentation. Flocculation is the mixing of the water <br /> with chemical additions to form a coagulated floc <br /> which is passed along to the next step,sedimentation. <br /> Sedimentation,or clarification is where the particulate <br /> matter,chemical floc,and precipitates from suspension <br /> are removed through gravity settling. <br /> Water <br /> 1242 12.3.6.1.b(3) Treatment Plant Y See line 1230 None. <br /> 10/03/2000 MHMP.CHECKLIST-928 Page268 <br />