2007-11-14 CC Packet - Laserfiche WebLink

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.'i,DWSMAs.. Public Drainaae Public drainage systems are maintained and monitored by the City and Rice Creek Watershed District (RCWD) in accordance with Metropolitan Surface Water Management Act. The City has constructed a network or storm sewers in developed areas that discharge to ditches and surface water bodies. RCWD manages and maintains the ditches,'creeksand lakes.for proper use and to protect'water quality. The City and Watershed' . District coordinate surface water management through their comprehensive plans. A map of the City's storm sewer system is provided in Figure 7. A map of the protected surface water, wetlands and ditches is provided in Figure 8. Sanitary Sewers Sanitary sewers serve all of the developed portions of the City. A few on- site septic systems are currently in use at large area properties that were associated with the remaining agricultural lands. The City is committed to expanding its sanitary sewer system with future development. A map of the City's sanitary sewer system is provided in Figure 9. Transportation Roads provide the principal mode of transportation within the City. The roads serving Centerville include: State Trunk Highways (8TH) and County State Aid Highways (CSAH) providing transportation across the metro region and State; County Roads (CR) providing transportation across the County, and City streets providing access to individual prqperties within a subdivision. The significant transportation arteries in the City are 20TH Avenue (CR51/CSAH21), Main Street (CSAH14) and Centerville Road (CSAH21). The City's DW8MA crosses the City limits and includes a portion of Interstate Trunk Highway 35E in the vicinity of the intersection with Main Street. A map of major transportation routes within the DWSMA is provided in Figure 10. Municipal Water Supply Since 1988, the City has operated a public water supply (PW8ID 1020036) that currently serves 3,600. The two City wells provide all the water to the system. The Minnesota Department of Natural Resources manages the City's water use through its Water Appropriations Permit Program to ensure an adequate supply that meets long-range requirements. In 2002, the total volume of water pumped from the City's wells was 66% (71 million gallons) of the permitted amount. A representation of Centerville's water-main map is provided in Figure 11. The Minnesota Department of Health (MDH) oversees the safety of the City's water supply. The MDH Community Water Supply Unit is responsible for assuring compliance with the federal Safe Drinking Water Act (SDWA) program. Preparation of this Wellhead Protection Plan is required under the SDWA. Appendix 2 presents the MDH Source Water Assessment for Centerville's municipal wells. Currently the City is permitted to withdraw 108 million gallons of water from its wells each year. In 2002, the total volume of water pumped fromthe City's wells was 71 million gallons. Water main extension to 800 properties is planned for the next ten years. The water main extension project will include all the remaining properties within the DWSMAs. Interconnectwith Lino lakes. In 2001 an interconnect was constructed to permit Lino lakes and Centerville to draw water from each other's systems. The interconnect is metered and monitored. It is anticipated that the interconnect will provide additional reliability. Water Quantity Data Elements July 3, 2007 DRAFT~. Centerville Wellhead Protection Plan (Part 2) Page 7