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~& <br />BENSON BROTHERS Truck f~ Equipment '' '~l°O" tO`'"~ ~" ~ u,yg <br />2134 J - 50 Rd. • Austin, CO 81410 <br />v1~JO2 <br />State of Colorado <br />Division of Minerals and Geology <br />1313 Sherman St. Room 215 <br />Denver, Colorado 80203 <br />~-2_ L~ <br />RECEIVED <br />JAN 2 7 2003 <br />Division of Minerals and Geology <br />- - --Re:-Request-for-technical revision;!--- - - __ _ -../_ _ - _ _.._. __ _.. <br />Hallenbeck Pit No. 1 / 'ifNo. M-7'1=062- ~ <br />Deaz Gentlemen, <br />After six Years of unprecedented drought, our best efforts to revegetate the south facing <br />slopes, we have failed. After a concentrated effort of seeding the recommended seed rate <br />in 1996 and again in 1998, along with bare root shrub planting in 1998, we have had no <br />success. <br />This spring'we aze,going [o try again. We have sent the soil to be sampled and are going <br />to fertilize with 11-56-0 as recommended at the rate of 80.85# per acre.. We are also <br />adding Zinc sulfate and Magnesium sulfate at the rate of 10# per acre (each) to lower the <br />ph and make the iron more available to the plants. <br />We aze currently pocking the slopes on a 6'x 6' diamond with an excavator, prior to <br />fertilizing and seeding with different grasses and shrubs that will hopefully be more <br />successful. <br />The new revisions to grasses and shrubs are as follows: <br />Russian wild rye grass 7# per acre <br />Crested wheat grass 7# per acre <br />Four wing saltbush 2# per acre <br />Indian rice grass 2# per acre <br />Rubber rabbit brush 1# per acre <br />We also plan to plant Siberian Pea Shrubs (Cazagana) on 15'spacings along the top of the <br />slopes also at similaz spacing on the bottom of the slopes in lieu of the honey locust, <br />mainly because of availability, and upon recommendation that they should be more <br />adaptable to our conditions. <br />2134 J-50 Road <br />Austin, CO 81410 <br />PHONE 970-835-3128 FAX 970 835-8567 <br />