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`~ Mr, Deart Massey . <br />Colorado Mined Land lamation Division <br />June 3, 1980 <br />Page 2 <br />Area 3 <br />Area 3 consists of the remnants of an old scoria stockpile that is no <br />longer used. The total disturbance a[ [his site [h a[ drains south into an <br />unprotected drainage is 0.8 acres, or 0.1% of the 733 acre drainage it sits at <br />[he head of. During 1980, this area will be smoothed, re[opsoiled and seeded, <br />Area 4 <br />This area consists of the main access road to the mine from highway 13. A <br />total of 19.1 acres of disturbance are involved in the road surface, shouders, <br />ditch, and cuts and Eills. This amounts to I.0% of the 1,858 acre drainage it <br />is in. Drainage from 1,236 acres of the total 1,858 acres is treated before <br />leaving [he permit area by passing through a series of sediment dams. The road <br />surface is asphalt and therefore does not contribute sediment to runoff, The <br />ditches, cuts and fills were seeded to perennial grasses in 1978 and have estab- <br />lished vegetation on them. <br />Area 5 <br />The fifth area is a 1.0 acre disturbance that consists of two electrical <br />substations and a short access road to the substation. This disturbance amounts <br />[0 0,05% of the 2,120 acre drainage it is in and is surrounded by natural vege- <br />Cation. RunuEf from about one-half of the total drainage (1,062 acres) ie <br />treated by passing through a series of sediment dams before leaving the pro- <br />perty. The road is normally used about l2 times/month by a light duty vehicle. <br />Occasionally a larger piece of equipment may use the road if the substation <br />needs maintenance. <br />Sincerely,yy~~ {{'' <br />~cZ~iX~ li,/OZL~r2~ <br />Wayne E. Sowards <br />Assistant [o Mine Manager <br />WES;jsb <br />Enclosure <br />cc: R,C. Diederich <br />File <br />k <br />