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<br />D-8N dozer <br />Topsoil Placement: <br />Topsoil will be replaced using a 627 scraper <br />Production Rate: <br />Topsoil volume <br />43,560 frz/acre (1.5 foot depth) (22 acres)(] yd3/27 fr3) = 53,240 yd3 <br />Fill to be placed using a Caterpillar 627 scraper at a cost of $140/hour <br />Average haul distances of 1,000 feet <br />Total resistance (grade and rolling) is 2% <br />Cycle time: Loaded 1.5 minutes Empty 1.25 minutes <br />Total cycle time = 3.75 minutes (grade adjusted) <br />Haulage volume 20 yd3/load <br />Unadjusted production rate <br />60 minutes/hour / 3.75 minutes/load (20 yd3/load) = 320 yd3/load <br />Production rate adjustments for 0.83 job efficiency and 0.92 operating altitude <br />320 yd3/hour (0.83) (0.92) = 244 yd3/hottr <br />Scraper tune required = (53.240 yd3 / 244 yd3/hour) = 218 hours <br />Total estimated cost = 218 hours ($140/hour)=$30,520 <br />Topsoil Grading: <br />Using topsoil grading calculations and costs from A.3, costs would be: <br />(52,240 yd3 / 1,255 yd3/hour) = 42 hours = 42 hours ($135/hour) _ $S,E.7 j <br />TOTAL ROM AREA TOPSOIL COSTS <br />REMAINING RECLAMATION COST OBLIGATION <br />TOTAL REMAING MILL RECLAMATION <br />COST OBLIGATION <br />F.1 Roadways and Parking Area <br />Roadway area = 30 acres (haul and access roadways) <br />Parking Area = 5 acres <br />F.1.1 Ripping <br />Equipment: D-8N dozer <br />Production Rate Assumptions: <br />Assume top foot will be ripped <br />Production Rate: <br />1.5 acres/hour <br /> <br />(35 acres/ 1.5 acres hour) = 23 hours = 23 hours ($135/hour) %"$3,105 , <br />\` <br />6 <br />$36,190 <br />$596,075 v <br />~~ <br />PRELIMINARY DRAFT <br />FOR DISCUSSION PURPOSES ONLY <br />