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<br />. - :, <br /> <br />~R;A'YE & ASSOCIATES <br />• <br />Progress Wethin ~viror:mental 7bler~nces <br />June 22, 1979 <br />Mr. Hamlett J. Barry <br />Director, Mined Land Reclamation Division <br />Colorado Department of Natural Resources <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Re <br />Dear Mr. Barry: <br />The Rockcastle Company <br />Grassy Creek Coal Mine N1 <br />Your file X78-45 <br />The purpose of this letter is to request approval of a technical revision <br />to permit N78-45. This request encompasses the following: <br />(1) minor relocation of haul roads, <br />(2) changes in various pit sizes resulting in a decrease in acres to be <br />disturbed by mining, <br />(3) additional stockpile areas, <br />(4) relocation of the office area, <br />(5) adjustment to the mining sequence, and <br />(6) change in the reclamation plan. <br />Haul Roads <br />The pre-mining and mining plan map of Exhibit C of the original permit appli- <br />cation has been revised to show adjustments to the road locations made in the <br />field. A revised map showing these adjustments is enclosed for your review. <br />Four minor changes were made. First, the final 1000 feet of the haul road <br />leading into pit A has been relocated generally parallel to the original plan, <br />but slightly below the planned road to provide a more gradual incline into the <br />pit. Secondly, the 'haul road leading to pits B and D has been straightened <br />at its juncture with the main haul road near Grassy Creek for approximately <br />600 feet. Thirdly, the southern most portion of the haul road leading to pits <br />B and D (a 180o curve) has been extended about 400 feet to provide a wider and <br />safer turn. Finally, the last 800 feet of road leading to pits B and D has <br />been relocated to provide a more gentle approach to the mine pits. A compari- <br />son of the permitted map with the revised map will reveal these changes. The <br />Rockcastle Company requests these changes to provide safer grades and turns. <br />The increase in the haul road length caused by these changes is approximately <br />1000 feet. The total length of haul roads within the permit boundary is about <br />5 miles. Therefore, this represents an increase in road length of about 4 per- <br />cent. <br />878 WeLGN COUi1T • Oo~OlN, COLORIDO 80401 • 8091 234,-8835 <br />