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• <br />Quaternc>~ry _, <br />Lm~ironme~ic:il Consltlting,w,4__,_,~ _ <br />November 11, 1992 <br />Mr. Larry Oehler <br />Reclamation Specialist <br />Division of Minerals and Geology <br />1313 Sherman St., Rm. 215 <br />Denver, CO 80203 <br />Re: Western Gravel, Inc. -- South D-20 Pit <br />(110(2) Limited Impact Permit Application <br />Dear Larry: <br />• iii-iuiiiii <br />- - - ri, ~.. <br />NOV 131992 <br />r7lvls~„~~ ~.. <br />This letter is in response to your request for certain additional <br />commitments required by the Division staff pertaining to the above-cited <br />permit application. The following items have been discussed with and <br />approved by Western Gravel, Inc. <br />1. Gravel Cover on Pit Floor A gravel cover ranging from about 6 to <br />8 inches will remain on the pit floor. <br />2. Side Slope Grading The side slopes will be graded to 4:1. <br />3. Slope Imprinting -- Orientation of Dozer Tracks In order to help <br />create moisture traps, a dozer will traverse the slope in a up-and-down <br />manner so that the long axis of the track imprints are made parallel to the <br />slope contour. <br />_ _- _- 4, Revege_tation Plan The proposed seed mixture for seeding disturbed <br />areas consists of a diverse mixture of grasses, shrubs and half-shrubs. <br />The shrubs and half-shrubs will compose 25 percent of the mixture. The <br />species were selected on the basis of current vegetation present on the <br />site, review of data for range seeding trials; review of vegetation present <br />on similar undisturbed sites; discussions with SCS and NPS personnel <br />(Leonard Jurgens, State Conservationist, SCS; Wendell Hassell, Plant <br />Materials Specialist, Nat. Park Service (formerly with the state office of <br />the SCS)). The current availability of various plant materials was then <br />considered. <br />The proposed mixture appears below. Seeding rates are based on a <br />critical area planting density of 40 pure live seeds (PLS) per square foot <br />(drilled rate). <br />L~1y~0 South-Park.Drive, Monument, Colorado 80732. (719) 488-27-<,9... - .., -- <br />... ~'! Mt4~MS~~. ,y~n4~ .. - mr' 1 n P ~NY•e. -ni.ppLY1Y,IT.RM~` ~.~IS.~iIMR11. <br />