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-6- <br /> 2. Conveyor corridor station 34+00 to 40+50 <br /> The average haul distance here is 400 feet. A 637D scraper has the following <br /> cycle time: <br /> Fixed time - 1 . 1 minutes <br /> Haul time (6% total resistance) .45 min. <br /> Return Time (0% total resistance) 30 min. <br /> Cycle Time 1.975in. <br /> With this cycle time, 637D scraper can move 702 CY per 50 minute work hour. A <br /> total of 2,700 CY must be moved. Only one scraper could be assisted by one <br /> D9L dozer with this short cycle time. Therefore, the following is the cost <br /> for this portion of the operation. <br /> 1 - D9L dozer @ $144.29/hr. = $ 548.00 <br /> 1 - D8L dozer @ $110.10/hr. = 418.00 <br /> 1 - 637D scraper @ $208.79/hr. = 793.00 <br /> 3 - Operators @ $54.00/hr. = 205.00 <br /> Total Cost $ 1,964.00 <br /> 3. Bin bench and fill area <br /> The average haul distance to the bin bench and fill area is 1,000 feet. A <br /> 637D scraper would have the following cycle time. <br /> Fixed time 1 . 1 minutes <br /> Haul time (6% total resistance) .80 min. <br /> Return Time (0% total resistance) .50 min. <br /> Cycle Time ^_ 2..4 msn- - ,�� <br /> With this cycle-time two scrapers can be loaded by one D9L. A 637D ca <br /> complete-18.5 cycles in a 50 minute work hour for a total of 481 CY/hr� d <br /> total'of 14,500 CY of topsoil must be moved. With two scrapers, the job wou� <br /> be completed in �'_46 hours at the following cost- <br /> 1 - D9L doz r @ $144.29/hr. = G� �';(� $ 4,329.00 <br /> i 1 - D8L dozer @ 110.10/hr. = r :i� 3,303.00 / <br /> \ 2 - 637D scra ers @ 417.58/hr. 12,527.00 <br /> 4 - Operators @ 72.00/hr. = 1 ,� <br /> 22,319.00 <br /> 4. Portal Area and Sediment Ponds <br /> A total of 2,000 CY of topsoil will be required to be replaced on the portal <br /> area and pond. The haul distance to the portal area is 3,600 feet. A 637D <br /> scraper will be used to haul the topsoil . The scraper cycle time is as <br /> follows: <br />