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III IIIIIIIIIIIIIIII <br />999 <br />ENERGY, INC. <br />A Subaidlmy of <br />au~ cenenene e <br />rimarmivmn cnupnmie <br />Dear Dan: <br />February 8, 2001 <br />Mr. Dan Mathews <br />Division of Mineral and Geology <br />2148 Broadway #CS <br />Grand Junction, CO 81503 <br />~~ 11 x 1001' <br />'a'~_ ...... :__~ <br />RE: Response to additional comments concerning TR-54 -East Portal Area <br />Reclamation. <br />Deserado Mine -Permit No. C-81-018 <br />The following is in response to additional comments from your November 22, 2000 letter <br />pertaining to the East Portal Area reclamation. The following response coincides with the <br />issues identified in your letter. Most issues were previously addressed in the materials <br />submitted on Januazy 29, 2001. However, specific responses aze as follows: <br />On the previous Map 89 (9/13/2000) the issue of berm locations was properly <br />addressed in Note #3. The exact locations of berms and silt fences are to be field fit to <br />properly control runoff as conditions dictate. We assume that a certain amount of field <br />fitting and design is allowed. Otherwise extensive delays would occur as Technical <br />Revisions are prepared, reviewed, public noticed, and approved just to slightly modify <br />the location of a silt fence, On the new Map 89 this same note is repeated. in <br />addition, locations of these proposed berms along with silt fences and filter fabric <br />berm breaks are further pointed out and noted. Berm height requirements would be <br />minimal. In all cases the flows are adequately treated with silt fences less than one <br />foot in height. Berms will be constructed and maintained to adequately carry such <br />flow. <br />An attempt was made to show the designed filter fabric berm breaks, silt fence length, <br />and logical locations given the topographic details available. Additional fencing and <br />berm breaks may be incorporated into the field construction as conditions warrant. <br />Please also note that attempting to show tie-backs only leads to further confusion. <br />5. Comment 3 already pertained to the East Porta] Area and has been addressed. <br />7a. The adjacent area undisturbed topography is provided on Map 86. This topo is not <br />available in electronic format and thus not incorporated into Map 89. Use the grid to <br />match up to the tic marks on Map 86 as an overlay. The annotation on the topo lines <br />of Map 89 was enlarged for your viewing. <br />7b. Cross sections have been added to Map 89 as you requested. <br />1607 Cowry ItD d65 <br />Rangely, CO 81618 <br />970-675700 <br />Fex 970fi75J399 <br />