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Section 2.05.3 Page 3 December 2021 (RN-02)  <br />was performed based on chemical and physical core data contained in Section 2.04.6, and <br />discussions presented in Section 2.05.4(2)(d). <br /> <br />After the upper coal seam was removed, the parting material composed of alternating layers of <br />sandstone, shale or clay was be removed. Partings and interburden material ranged in thickness <br />from a few tenths of a foot to approximately 12 feet. The thinner partings were removed by loader <br />or dozer and hauled or pushed into an adjacent mined out pit. The thicker partings and interburden <br />were dozed into a mined out pit or excavated by the shovel and trucks and hauled to a mined out <br />pit. After the overburden or parting was removed above each individual coal seam, a dozer, loader <br />or motor grader cleaned off any overburden or parting material remaining on top of the coal. <br />Dozers were used to rip or break up the coal as necessary prior to loading. Once a truck was loaded, <br />the coal was transported off permit approximately eight miles to the power station. <br /> <br />The Colorado Cooperative Company’s Ditch (Second Park Lateral) was temporarily diverted into <br />a large HPDE pipeline to facilitate mining the area of the permit where the current ditch cross the <br />permit area. Once mining and reclamation activities were complete the Second Park Lateral was <br />reconstructed in an HDPE pipeline in the same location as the pre-mine ditch. <br /> <br />2.05.3(3) Mine Facilities <br />Please see a separate section devoted for 2.05.3(3) Mine Facilities. <br /> <br />2.05.3(4) Ponds, Impoundments, Other Treatment Facilities and Diversions <br />Please see a separate section devoted for 2.05.3(4) Ponds, Impoundments, Other Treatment <br />Facilities and Diversions. <br /> <br />2.05.3(5) Topsoil <br />Please see Section 2.05.4(2)(d) Overburden and Topsoil Handling for a discussion of Topsoil as <br />required by 2.05.3(5). <br /> <br />2.05.3(6) Overburden <br />Please see Section 2.05.4(2)(c) Backfilling and Grading for a discussion of overburden as required <br />by 2.05.3(6). <br /> <br />2.05.3(7) Coal Handling Structures <br />No coal crushing or processing occurred at NHN. <br /> <br />2.05.3(8) Coal Mine Waste and Non-Coal Processing Wastes <br />There were not any coal processing facilities at the NHN permit area. <br />