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<br />Preliminary grading prior to topsoil placement, the actual spreading of <br />topsoil and the establishment of erosion control structures can be <br />accomplished in 132 hours with a D-7, and Iess if a larger machine were <br />used. A small amount of loader time is included in case the erosion <br />control work requires the placement of rip-rap or similar front-end <br />loader work. McDermid Engineering Associates, Inc., compiled the pro- <br />cedures required to reconstruct the stream channel to such a wey ,~a to <br />siynific:antly rsduca velocity. Approxlmatuly 4500 eons of rip-ra,p <br />material will be required to accomplish this task et a cost of 52.9 par <br />ton placed. (Please see Section 6.J, paya 39 of App~ndlx E-J.) <br />Purchase .,nd Houyh Placemm~t of 't'opsoil <br />A fuw basic qua1111catlony serum nrc~saary to pr~tacu tfilr dl~icusslon. <br /> <br />1'he Flgura of 24,200 cubic yards of topsoil will cover an aria of JO •cr~s <br />to a depth of 6 inches. (JO 43560 0.5) <br />27 <br />This figure is conservative since it assumes little or no topsoil is <br />available on site and a rather high acerage fiyurs for topsoil plnco- <br />ment. In reviewlny the affected land flgutea In Exhlblt A plaas~ notes <br />that the ore sorter and water treatment facilities will not be inc;luded <br />in this bond and the gravel and borrow pits, ore transfer pad, an~4 the <br />exploration drill roads west of the mine will be reclaimed prior ~:o the <br />end of the mine life. Additionally, the majority of "the access road <br />links" will be ripped and seeded with grasses. <br />With this thirty acre figure and 0.5 foot depth in mind, the next <br />