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0 <br /> �, <br /> STATE OF COLORADO <br /> MINED LAND RECLAMATION DIVISION <br /> f CU <br /> Department of Natural Resources <br /> 1313 Sherman St., Room 215 <br /> Denver,CO 80203 <br /> 303 866-3567 87'.� , <br /> FAX: 303 832-8106 876 <br /> Roy Romer, <br /> Governor <br /> Fred R.Banta, <br /> Division Director <br /> DATE: June 15, 1990 <br /> TO: John Doerfer <br /> FROM: Gregg Squire <br /> RE: Vegetative Monitoring Proposal , Climax Mine, File No. M-77-493 <br /> I have reviewed the proposed vegetation test plot monitoring plan received <br /> from AMAX on April 14, 1990. The plan is well though out and comprehensive. <br /> The following comments are really more a matter of clarification than any <br /> major modifications. <br /> 1 . The Division recommended yarrow be added to the Climax seed mixture <br /> during review of the 1988 amendment. Will yarrow be added to the <br /> Climax seed mix? If so, one pound per acre is recommended. <br /> 2. The plan calls for measuring productivity of the grass/legume <br /> plots. I assume that this will be done by clipping the annual <br /> growth. When will the clipping be done? Also, what size plots <br /> will be clipped and how many plots will be clipped per year? It <br /> has been my experience that repeated clipping at the same location <br /> for several years may reduce the production measurements. You may <br /> wish to rotate the clipped areas each year within each larger test <br /> plot. <br /> GRS/yjb <br /> cc: Steve Renner <br /> 8072F <br />