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zs <br />/~ ,~~\ United States Soil <br />`~ `' Department of Conservation <br />• \~ Agriculture Service <br />su0)etL• <br />9595 Nelson Road, Box D, Longmont, CO 80501 <br />776-4034 <br />Date: July 28, 1988 <br />ro: Mr, Barry Covey <br />479 (:ounty Road 83 <br />Boulder, CO 80302 <br />Dear Mr. Covey: <br />File Cotle: <br />This letter is in response to the site visit done on July 28, 1988. The <br />area where waste material from your mine operation will be placed has the <br />following species for vegetative cover: Needle and thread, bluegrass <br />species, cheatgrass, bluegrama, curleycup gumweed, sunflower, ponderosa <br />pine, currant bush and several other miscellaneous species. Basal <br />density is 20 to 30 percent. <br />As much waste material as possible should be left underground. The <br />• rest of the material when placed on the surface should be placed so <br />the slope does not exceed 3:1. When the revegetation effort begins, <br />the top soil that has been previously saved should be evenly spread <br />over the area. The top soil should be tested and fertilizer and other <br />additives should be added to develop a good medium for plant growth. <br />If you wish to gather seeds from various plants in the <br />the area, it is advisable to collect enough seed to ap <br />pounds per 1000 square feet. The area should be raked <br />be placed in the ground 1/4 to 1/2 inches. The seeded <br />mulched with two bales of weed free hay for every 1000 <br />This hay should be crimped into the soil to keep it in <br />area to revegetate <br />fly more than two <br />so the seed will <br />area should be <br />square feet. <br />place. <br />If you do not wish to gather seed but want to buy it, a recommended seed <br />mixture is: <br />ecies Percent Lbs/Acre* <br />Bluegrama 20 .6 <br />Western wheatgrass 50 8.0 <br />Needle and thread 30 4.5 <br />*(Lbs/Acre is for Pure Live Seed) <br />A berm should be placed on the road below the mine to stop any water that <br />might soak through the waste material. If water is running through the <br />material from above, a ditch should be developed to divert the water away <br />• from 'the waste material. <br />Sincerely, <br />~ .~,~ <br />v Richard J. Mullaney, " <br />District Conservationist <br />