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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Table 7. Storage Pond Characteristics <br /> 3-lIay ActIve <br /> Daily Storage Storage Estimated Surface Volume of Water Volume of Total Area of <br /> ReselVoir Peak season Requirement Requirement Area of Reservoir Stoarge (acre- Excavation Uning Material <br />Phase 10# demand (GPM) (Gals)' (ft; (acres)2 feet)2 (acre-feet)3 (tt2)' <br />Phase 1 9006 1.511 725,280 290,849 1.17 8.42 9.26 57,074 <br />Phase 2 9004 7,714 3.702,720 1,484,850 4.98 42.62 46.88 230.731 <br />Phase 4 9008 3,548 1,703,040 682,946 2.46 19.62 21.59 116.305 <br />Phase 6 - west 9010 1.234 592,320 237,530 1.00 6.99 7.69 49.088 <br />Phase 6 - Middle 9012 710 340,800 136,666 0.64 4.09 4.50 32,208 <br />Phase 6 - East 9014 1.774 851,520 341.473 1.35 9.98 10.97 65,619 <br /> <br />(1) Assuming an B-hr water v.ind<>N <br />(2) Assuming 8 feet active water depth and 4: 1 side slopes <br />(3) Includes 1 foot freeboard allowance and 10 feel of latal water depth (active & inactive storage) <br />(4) Includes 1 foot of freebooar1l allowance and malerial for anchor trench <br /> <br />Intake System <br /> <br />An intake screen constructed of expanded metal will be located in the storage reservoirs <br />and help prevent large debris from entering the pump system. A pipe will connect the <br />intake screen to a concrete wet well located below the pump system and building. An <br />isolation gate valve on the intake pipe will provide isolation during maintenance and <br />cleaning of the wet well. <br /> <br />Pump Stations <br /> <br />All of the pump stations are connected by the distribution piping network and they <br />contribute to the total flow rate for the City of Lamar pressurized secondary supply <br />irrigation system. It is assumed that all of the proposed pump stations will operate <br />simultaneously. Each station will include some redundancy to allow for maintenance of <br />the pumps and motors without disrupting the service flow rate. However, if an entire <br />station is taken out of service, the remaining stations will not be able to provide the total <br />peak day demand and modifications to the system operation may be required. <br /> <br />The hydraulic model has been developed to account for the actual flow rate required <br />from each pump station and is based on a discharge pressure of 90 PSI at each pump <br />station location. <br /> <br />Each pump station will include multiple pumps to provide a range of required flow rates <br />from incidental watering needs to the peak day demand. The stations will be designed <br />as prefabricated, skid-mounted pump stations including all pumps, motors, valves, filters, <br />and controls. <br /> <br />The pump systems will consist of multiple vertical turbine pumps capable of supplying <br />the required peak season flow rate at the set pressure. Each skid will be equipped with a <br />smaller "pressure maintenance pump" to keep the distribution system pressurized and to <br /> <br />Aqua Engineering, Inc. <br />and Colorado State University <br />May 19, 2004 <br /> <br />Secondary Supply Feasibility Study <br />-26- <br />