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EXHIBIT L RECLAMATION COSTS Innay 20, 20041 <br />Platte Sand & Gravel LLC - S&H Mine - M-2000-158 <br />This reclamation cost estimate in based on the assumption <br />that there will be no more that 15.00 acres ± of Plant Site <br />disturbed at any one time. In addition, up to 85 acres of the <br />Bluff Lake area may need to be revegetated where the pit run <br />gravel is stored. It is also based on a worse case scenario <br />i.e., at a time when the greatest area will need some form of <br />reclamation. At that time we will have to respread 89,943 cubic <br />yards of topsoil, shape 15.00 acres of plant site area and <br />revegetate 100.00 ac. t. The table below outlines the various <br />areas of disturbance at that time. The amount of topsoil that <br />will be re-spread is based on an average of 6 inches. A 631-D <br />motor scraper will be used to resoil the area and a 140G motor <br />grader will be used to shape the seed bed. The cost to construct <br />the bentonite slurry wall is included using the per foot cost <br />suggested by the Division. These figures are then used in the <br />calculations for the bond amount. The revegetation cost figure <br />includes fertilizer, grass seed, mulch and drilling costs. <br />STAGE <br />NEEDS REBOILING <br />NEEDS SEEDING <br />GRADING PLANT SITE <br />Longhorn Slurry wall <br />REBOIL @ 6"(sf 1.12) <br />Secondary revegetation <br />TOTAL SOIL DEPTH <br />100.00 6" <br />100.00 <br />15.00 <br />9898 lft by 30 ft depth ave. <br />89,943 CUBIC YARDS <br />258 <br />EST/MATED UN/T COSTS FOR RECLAMAT/ON /TEMS: <br />Unit Cost <br />1. Revegetation includes grass seed mix, mulch <br />And fertilizer and labor to drill $350.97/AC. <br />2. Re-spreading soil and/or growth media with <br />631-D Motor Scraper, Haul distance less than 500 0.53/yD3 li <br />3. Grade and shape 15.0 acres, 140G motor grader 48.26 /ac ?i <br />4. Slurry wall installation cost per face foot $3.00 <br />RECLAMAT/ON COSTS <br />1. Revegetation, 100.00 ac @ $350.97/ac $ 35,097.00 <br />2. Resoiling, 89,943 yd3 @ 534/yd3 47,701.64 <br />3. Grading and shaping 15.00 ac. @ $48.26/ac 723.86 <br />4. Slurry wall installation $890,820.00 <br />5. Secondary revegetation loo.oo ac x 2s$ x $350.97 8,774.25 <br />Net Total $983,116.75 <br />6. Indirect costs <br />Mobilization 2,679.04 <br />insurance, Bond, & Profit 120,456.33 <br />7. Administration costs 49,155.84 <br />TOTAL ESTIMATE $1,158,087.01 <br />RECOMMEND BOND BE SET AT ~f,160,000.00 <br />1/ Figured using Cat Handbook and rental costa from local sources for 838 effi- <br />ciency, 631-D motor scraper, for eastern Colorado <br />2/ Figured using Cat Handbook and rental costa from local sources for 83~ effi- <br />ciency, D-9 dozer, for eastern Colorado <br />