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• i <br /> • 2 .05.4 (2 ) (b) <br /> The following discussion forms the basis for the <br /> following reclamation estimate: <br /> Topsoil <br /> It will be assumed that an equipment spread of two <br /> 651E scrapers and one D-9 push cat will be used to haul the <br /> topsoil. Cycle times and productions are as follows. The CY/Hour <br /> production figure assumes two scrapers, a 50 minute work hour, a <br /> payload of 34 .6 cubic yards of topsoil. The cost per cubic yard is <br /> calculated using an hourly rate of $150 for the D-9 and $175 for <br /> the 651E scrapers. <br /> Load/Dump Haul Return Total CY/Hour <br /> Topsoil Pile 3 1.3 0.9 0.7 2 .9 597 <br /> Topsoil Pile 4 - - - - - - - - - - <br /> From topsoil pile 3 the production from the two <br /> scrapers is 1, 194 (597 X 2 scrapers ) cubic yards per hour. At a <br /> scraper spread cost of $500.00 per hour the unit cost to rehandle <br /> the topsoil from pile 3 is $0.42 (500/1194 ) . <br /> Spoil From Ridges <br /> . The method used to move spoil ridges into the <br /> adjacent pits is to push it with a tractor dozer. The maximum push <br /> distance is 90 feet, one pit. From edition 15 of the Caterpillar <br /> performance handbook, it is estimated that a D-9 can push 1100 <br /> cubic yards per hour with a 90 , push distance. Assuming a D-9 <br /> costs $150 per hour, the cost per cubic yard to move the spoil <br /> ridges is $0. 14. <br /> Reclaim Sediment Pond F <br /> Sediment Pond F was not constructed, therefore no <br /> allowance for reclamation is required. <br /> • <br /> 2.05-20iii September 1993 <br />