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._ . _ . • • iii iiuiiiiiiiii iii <br />,..~..n, TRAPPER ~INI1V6 I1~C. R~,,~~„~~ <br />oEC $ ~ ~eea <br />December 18, 1984 <br />MINED UIND RECUMATION pIV1910N <br />COIo. Dept Of N~tupl Rpaurces <br />Ms. Susan Mowry <br />Colorado Mined Land Reclamation Division <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Ref: Proposed Stockpile Seed Mixes; Deletion of Smooth Brome and Alfalfa <br />Dear Susan: <br />I've reviewed your letter dated 8-23-84 concerning the deletion of alfalfa <br />and smooth brome from our seed mix Eor topsoil stockpiles (Table 6). We will sub- <br />stitute mountain brome Eor smooth brome as requested. However, we disagree with <br />your request [o delete alfalfa. Since alfalfa is a deep-rooted species, up to 30 <br />feet, it enhances the quality of topsoil at depths by hosting mycorrhizal fungi. <br />This in turn creates a more favorable habitat for future plant species reestab- <br />lishment when the topsoil is redistributed. In addition, the number of acres of <br />topsoil stockpiles is approximately 50. This is a very small area in relation to <br />the total number of acres that can be retopsoiled from our stockpiles, i.e., <br />approximately 1,115 acres at 10 inches. Thus the amount of volunteering which <br />might occur Erom species established at the stockpile surface would be insignifi- <br />cant. Therefore, we encourage the Division [o approve alfalfa for this seed mix. <br />Also, iE this change to our approved seed mix is accepted, existing perennial <br />seeded topsoil stockpiles would not be changed. In other words, we would not <br />spray out smooth brome and replace it with mountain brome. <br />If you have any questions, please call. <br />Best regards, <br />G,. w- <br />H. Bruce Humphries <br />Sr. Environmental Engineer <br />HBH/mg <br />Enclosure <br />P.O. Box 187 Craig, Colorado 81626 <br />(303) 824-4401 <br />