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<br /> Table 10. Cost Estimate: Diversion Alternative.
<br /> 10-Year System 100-Year System
<br /> Unit Un,t
<br /> Cost Quanti ty Cost Quant i ty
<br /> Item ( LF) (LF) Total Item (LFl ( LFl Total
<br /> CHANNEL S CHANNELS
<br /> Overflow Channels $ 15 14,510 $ 217,650
<br /> Section B 21 2,500 52,500 Section A $ 17 1,600 $ 27,200
<br /> Section 0 15 1,600 24,000 Section C 25 2,500 62,500
<br /> Di tch Regradi ng 12 4,200 50,400 Ditch Regrading 12 4,200 50,400
<br /> CULVERTS CULVERTS
<br /> Twi n 10' x 8' 350 220 77,000 Twin 10' x 8' 350 220 77 ,000
<br /> PIPE (RCP) PIPE (RCP) w
<br /> 0)
<br /> 18-inch 32 400 12,800 36-inch 75 1,950 146,250
<br /> 36-inch 75 1,550 116,250 54-inch 115 1,960 225,400
<br /> 42-inch 85 3,200 272,000 60-inch 145 4,400 638,000
<br /> 48-inch 100 6,250 625,000 66-inch 175 2,450 428,750
<br /> 54-inch 115 1,860 213,900 72-i nch 200 2,700 540,000
<br /> 66-inch 175 1,650 288,750 78-inch 225 200 45,000
<br /> 72-inch 200 100 20,000
<br /> 78-inch 225 60 13,500
<br /> I NLETS AND MANHOLES 2,500 28 70,000 INLETS AND MANHOLES 3,500 28 98,000
<br /> Subtotal $2,053,750 $2,338,500
<br /> 20 Percent Engineering and Contingencies 410,750 467,700
<br /> TOTAL $2,464,500 $2,806,200
<br /> Annual Cost $ 240,000 $ 275,000
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