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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 5 <br /> <br />11 <br /> <br />TABLE 6 <br /> <br />SUMMARY OF UNIT COST <br /> <br />Item <br /> <br />Excavation for Channel <br />Backfill along Channel <br />Buried Riprap <br />Topsoil (strip, stockpile and spread) <br />Seeding <br />Sodding <br />Concrete Channel Lining <br />Low Flow Channel Concrete <br />12" CMP <br />24" CMP <br />30" CMP <br />48" CMP <br />84" RCP Jacked Pipe <br />36" x 22" CMP <br />65" x 40" CMP <br />13'5" x 8'5" CMP <br />Asphalt Repair <br />Excavation for Structures <br />Backfill around Structures <br />Relocate Utilities <br /> <br />UNIT OPERATION AND MAINTENANCE COSTS <br /> <br />Unit Price <br /> <br />Type of Flood Conveyance <br /> <br />Annua 1 O&M Cost <br /> <br />$ 2.00 per cubic yard <br />1.00 per cubic yard <br />30.50 per cubic yard <br />1.25 per cubic yard <br />.035 per square foot <br />.14 per square foot <br />160.00 per linear foot <br />67.00 per linear foot <br />19.00 per linear foot <br />26.00 per linear foot <br />30.00 per linear foot <br />39.00 per linear foot <br />1,420.00 per linear foot <br />49.00 per linear foot <br />57.00 per linear foot <br />209.00 per linear foot <br />8.50 per square yard <br />2.75 per square yard <br />3.75 per cubic yard <br />50.00-70.00 per linear foot <br /> <br />Grass-lined Channel <br />Concrete-line Channel <br />Underground Conduit <br />Detention Pond <br /> <br />$0.50 per linear foot <br />$0.50 per linear foot <br />$0.60 per linear foot <br />$60 per ac re <br /> <br />NOTE: Unit operation and maintenance costs are based upon Reference <br />13 and 14. <br />