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999 <br />~`AGRA <br />Earth & Environmental <br />October 21, 1996 <br />Mr. Gary Curtiss <br />COLORADO DIVISION OF MINERALS & GEOLOGY <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />SUBJECT: CMLRB Regular 112 Permit <br />File No. M96-052 <br />Owens Brothers Concrete Company <br />Response to NRCS Comments <br />Dear Mr. Curtiss: <br />AGRA Earth & <br />Environmental, Inc. <br />17301 W. Colfax Avenue <br />Suite 170 <br />R ~ I ado 80401 <br />9988 <br />Fax (303)277-9955 <br />oL'I 2 2 1996 <br />~IVISIOn of Minprald ~, uge,~0y, <br />AEE Project No.:6317-0015 <br />This letter is being sent to you in response to a letter received from Norman Wells, Jr. of the <br />Natural Resources Conservation Service, on October 17, 1996, which commented on the Del <br />Camino Sand and Gravel Mine Reclamation Plan. The Service agrees with the majority of the <br />reclamation plan, but they do have a few areas of concern. The first area of concern deals <br />with topsoil replacement. It is suggested that all graded slopes be ripped or disced prior to <br />topsoil placement. The applicant commits to this procedure. <br />The neM section of comments addressed the seeding method and mulching. Seeding with <br />a drill was recommended over broadcast seeding. Determination of whether drill seeding is <br />feasible will depend on slope. It is suggested that mulching will be crimped into the soil after <br />it is applied. When the slope allows, seeding will be done with drill seeding equipment. <br />Native hay mulch will be crimped into the soil. <br />The last section deals with weed management. There is a current plan to control noxious <br />weeds. It has been suggested that a plan to control annual and biennial weeds also be <br />implemented. If annual and biennial weeds become a problem they will be cut and or sprayed <br />with an appropriate herbicide. <br />The basic seeding mixtures of the plan were approved and the seeding rates were within the <br />recommended range. If you have any questions or commments on this letter please feel free <br />to contact us. <br />Engineering 8 Environmental Services <br />