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Foothill Sanitary Landfill Preliminary Closure Plan <br /> Revision #1 May 6, 1994 <br /> 20 ACRE LINED MODULE <br /> 20 Acre Module Entire Site <br /> Foundation layer = 32 , 267 c.y. 2 , 132 , 827 <br /> Clay cover = 64 , 533 c.y. 2 , 003 , 759 <br /> Vegetative Cover = 32 , 267 c.y. 1, 066 , 413 <br /> Totals 129 , 067 c.y. 5 , 202 , 999 <br /> * Unit Costs for Placement <br /> Foundation and Vegetative laver cover. Assuming excavation <br /> and placement at 120 c.y. /hr. , and using labor costs at <br /> $23 . 58 plus scraper operation cost of $60 . 10, the following <br /> unit cost calculation applies: . <br /> Unit cost ($83 . 68/hr) /120 c.y. /hr. _ $0 . 70/c.y. <br /> Clav cover -- 1 - 2 ft. thick. The excavation and placement <br /> unit cost will be the same as for the Foundation and <br /> Vegetative Layers. However, the clay will require <br /> additional compaction to 95% of maximum density and will <br /> require an additional unit expense as shown below. <br /> Table for additional compaction cost for clay cover <br /> EQUIPMENT EQUIP. OPER LABOR PRODUCTION COST/C.Y. <br /> $ $ C.Y. /HR $ <br /> Compactor I 14 . 68 I 23 . 58 49 I 0 . 78 <br /> Water Truck 5 . 38 23 . 58 108 0 . 27 <br /> Grader 14 . 38 23 . 58 866 0 . 04 <br /> Supervision 30. 00 650 0 . 05 <br /> COMPACTION UNIT COST $1. 14/C.Y. <br /> 20 <br />