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l~ <br />~- <br />Mr. Gilbert Nindahl -2- September 30, 1983 <br />D. ExFiibit__~___..Minirtg,-Plan <br />1. How many cubic yards of topsoil is currently stockpiled? Flow many ~ <br />additional cubic yards of topsoil will be stripped and stockpiled for `y ..~ <br />later replacement? <br />2. How many cubic yards of overburden is currently stockpiled? liow <br />many additional cubic yards of overburden will be stripped and <br />stockpiled for later replacement? <br />3. lopsoil and overburden stockpiles should be definite stockpiles, ~ ~ <br />properly sloped such that the stockpiles are capable of supporting a <br />perennial yrass cover until used for reclamation. <br />4. Topsoil and overburden stockpiles to remain for greater than 1 ~;~ <br />yrowing season should have a perennial grass cover planted to aid in <br />protecting this material from wind and water erosion. <br />E. Exhibit E -Reclamation Plan <br />1. the operator has conmitted, in the oriyinal 2'1-acre permit, to <br />replace topsoil to a minimum depth of 12 incFres over the affected area. ;~~ <br />The operator should have salvaged this quantity from the Niwot series. ~I"" <br />TFierefore, the staff does not understand or agree to the statement that " <br />the operator M111 replace 6-12 inches of plant growth medium per acre. <br />7.. There are conflicting statements in the reclamation plan and soils <br />information with respect to 'the salvage and replacement of topsoil ;and <br />overburden from colluvial lands. In the Soils section, the operator <br />states, °Topsoil will be separately stored from the overburden, but in <br />the reclamation please, the overburden will be dry screened and used <br />along with the topsoil as the plant growth medium." In another <br />paragraph within the Soils section, the operator states, 'The use of <br />colluvial land as the plant growth medium for reclamation will require <br />that dry screening of topsoil and overburden be dune before seeding, and <br />to insure successful revegetation, proper management. through controlled <br />or reduced grazing and irrigation will be required." <br />Tn the reclamation plan, the operator states, "As 'the operation <br />progresses from area to area, loaders and scrapers will remove the 12-24 <br />inches of colluvial topsoil and subsoil. This material will be stored <br />above the quarry along with the overburden (f.xhibit C - Mining Plan <br />Map). Due to the overall high rock content of the overburden and <br />topsoil, this material MiII be screened prior to reclamation." <br />