Laserfiche WebLink
RULE 4 PERFORMANCE STANDARDS <br />Collom – Rule 4, Page 18 Revision Date: 4/28/22 <br />Revision No.: TR-154 <br />4.14.2 General Grading Requirements <br />The final graded slopes at the mining operation will not exceed the approximate original pre-mining slope <br />grade as shown on Map 19C. Colowyo will retain all overburden and spoil material on solid portions of <br />existing or new benches. The final bench at the terminus of the operation will be eliminated by <br />backfilling overburden into the final pit area. <br />Final grading before topsoil placement will be conducted in a manner that minimizes erosion and <br />provides a surface for the topsoil that minimizes slippage. Final grading will be accomplished so that <br />overall grades will not exceed lv:3h. The plan for backfilling and grading is shown graphically on the <br />Map 29B. <br />4.14.3 Covering Coal and Acid and Toxic Forming Materials <br />Colowyo will not have any exposed coal seams remaining at the end of mining and reclamation. <br />Colowyo does not have any acid forming materials at the mine. For discussion on acid and toxic-forming <br />materials, refer to Section 2.04.6. For disposal of non-coal wastes or materials constituting a fire hazard, <br />refer to Section 4.11.4. <br />4.14.4 Thin Overburden <br />Colowyo does not have a thin overburden situation as defined in Section 4.14.4 of the regulations. <br />4.14.5 Thick Overburden <br />Colowyo does not have a thick overburden situation as defined in Section 4.14.5 of the regulations. <br />4.14.6 Re-grading or Stabilizing Rills and Gullies <br />Please see Section 4.14.6 in Volume 1. <br />4.15 REVEGETATION REQUIREMENTS <br />Please refer Volume 1, Section 4.15 for revegetation requirements for the Collom area. <br />4.16 POSTMINING LAND USE <br />4.16.1 General <br />Please refer to Volume 1, Section 4.16. <br />4.17 AIR RESOURCES PROTECTION <br />Please see Section 2.05.6 in Volume 1. <br />4.18 PROTECTION OF FISH, WILDLIFE, AND RELATED VALUES <br />Current and historical mitigation efforts, protection efforts, and habitat improvement plans are discussed <br />in Colowyo’s existing permit and Section 2.05.4. Most of these efforts have been targeted at Greater <br />Sage-Grouse, mule deer, elk, and raptors.