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The irrigation water quality is not intended to be treated, but does contain a <br />significant silt load. The e�sting Tu often exceeds 200. No settling basin or <br />treatment is plannea to modify water quality. <br />No previous studies have been complete, since the system has developed over the <br />last 100 years.(regarding tb.e first 1.7 cfs) <br />N. Project Alternatives: <br />The Project consists of designing a collection system and pump station to draw <br />river water and pump 3.5 cfs into the irrigation system. The river water is often <br />dirty with lugh silt load and often sand and debris. The Town has tried perforated <br />pipe interceptors, catch basins with barriers and open pipes. Our goal is to <br />develop a design to lixnit sand and debris to reduce clogging and abrasion on the <br />pump system. We propose this variable adjustment desiga without other <br />aiternatives because we have tried many other options. This design allows the <br />operator to manually set the weir opening to the best quality water interception <br />area for a given river flow condition. The system is designed to allow for back <br />flushing from the storage tank reserve and also isolation if river quality is <br />unacceptable. <br />Cost Estimates: <br />Capital cost of construction is anticipated at approxixnately $ 370,000 <br />O & M costs are: <br />Maintenance/month = $ 200/mo @7 mo. $ 1,400/yr <br />Electrical costlmonth @ 6 cents/K gal. <br />At 100% use= $ 3,888 , 25%-7 months $ 6,800/yr <br />Repair, parts @$ 300/m�7 mo $ 2,100/yr <br />Program adxnin. @ $200/mo $ 1,400/yr <br />TOTAL 11700 <br />34 % DeBeque @$ 3,510 & 70% Blue Stone Irrigation <br />@ $8,190 - - <br />Future Debt payments $ 1,206/mo = S 14,474/yr <br />Total Town cost/yr= $17,980 _ - <br />Cost per service user@ 25t1 services =$ 72.00/yr <br />Proposed user fee = S 75.00 per year <br />'The cost estimate for this project is: INTERCEPTOR, PUMP & PHASE 3 PIPE <br />1. Rei.nforced Concrete ring with flow control $ 30,000 <br />(with usstallation in river) <br />2. 16" Pipeline, plus river placement-200' $ 30,000 <br />3. Riprap flow control and protection $ 45,000 <br />4. 50 hp motor and pump station (25' pit) $ 32,000 <br />5. Electric service. (200 amp@ 240v) $ 40,000 <br />6. 12" c1.200 high pressure Pipe tie to exist-200' $ 20,000 <br />7 Contingencies ---10% $ 19,700 <br />8. Engineering, design, biddi.ng, Constr. Admin. 15% $ 32,540 <br />PROJECT SUB-TOTAL $ 249,200 <br />Pg2of5 <br />