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will not be dependent upon existing Cle Blum water rights, but rather will provide their own <br />water rights as development occurs. <br />Water System Requirements and Level of Service <br />Water systems must be able to reliably and economically supply water that meets state standards <br />for drinking water quality in sufficient quantities and at adequate pressures to meet existing and <br />projected demands within the planning period. Perfonnance and design criteria upon which the <br />system analysis are derived from the following sources: <br />• State board of Health Drinking Water Regulations (WAC 246-290); <br />• Water System Coordination Act Fire Flow Regulations (WAC 248-57); <br />• Sizing Guidelines for Public Water Supplies; <br />• P]anning Handbook: A Guide for preparing Water System Plans; <br />• Recommended Standards for Water Works, Policies for the Review and Approval of <br />Plans and Specifications for Public Water Supplies, A Report of the committee of the <br />Oreat Lakes -Upper Mississippi River Board of State Public Health and Environmental <br />Managers; <br />• Insurance Services Office Guide for Determination of Required Fire Flow; <br />• Public Law 93-523, Safe Drinking Water Act; and <br />• Public Law 99-339, Safe Drinking Water Act Amendments of 1986. <br />Sanitary Sewer System <br />The city has completed its revised plan for the Sanitary Sewer System 8lld operates a new sewer <br />treatment facility located on Owens Road. This Sewer Comprehensive Plan serves as a complete <br />inventory of existing facilities and services. These projections were prepared by URS as <br />consulting engineers for the City of ele Elum. Included are estimates on service areas, <br />populations, and flows. At current projections, the City of ele Elum, has in place capacity to <br />treat sewerage demands through the year 2020. <br />Avg. daily flow <br />Max. Monthly Flow <br />Peak Instantaneous flow <br />BOn* <br />TSS** <br />TableCF-S <br />Existing and 2010 Projected <br />Discharge and Loading <br />Existing <br />80,700 gpd <br />150,000 gpd <br />140ppd <br />174ppd <br />*5-day biochemical oxygen demand <br />··total suspended solids loading <br />Projected <br />96,000 gpd <br />129,000 gpd <br />400gpd <br />161 ppd <br />201 ppd <br />These projections as based on a one third reduction of infiltration and inflow (see draft Facility <br />Plan for the city of Cle Elum Sanitary Sewer). <br />13