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a Slopes<3:1 2.0 Acre $1,097.78 $2,196 <br /> TASK DESCRIPTION QTY. UNIT UNIT PRICE AMOUNT <br /> b Slopes>3:1 0.5 Acre $1,600 $800 <br /> TOTAL $49,206 <br /> Rock Tunnel Vicinity Notes <br /> ' Job requirement between big and small, average large and small job mob/demob costs <br /> Volumes from 1-27-87 MCR submittal <br /> 3 Assume concrete at$20.20 per yard for demolition <br /> 4 Due to size of CMP at North Fork and Dutch Creek locations, and depth of burial, assumed <br /> three times the CMP removal costs from road bid <br /> 5 Construct lined V channels across top; north to south <br /> 6 Construct large trapezoid channel with rip rap due to (1) volume of flow, (2) duration of flow, <br /> (3) salinity of flow, (4) durability and low maintenance costs. <br /> In order to bury demolished concrete, and to complete highwall elimination, need to fill 25 <br /> lineal feet of highwall to 25 feet height at 21-1:1 V slope. <br /> s Costs for demolition of steel and miscellaneous materials from cost estimating program. <br /> Costs to be subtracted if tasks performed by demolition contractor. <br /> 9 Road grading unit price reduced by 20% due to decreased road width <br />