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PERMFILE59827
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PERMFILE59827
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Entry Properties
Last modified
8/24/2016 11:06:54 PM
Creation date
11/20/2007 6:27:22 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
Exhibit 66 Small Area Exemption Lone Pine Gulch Development Waste Pile
Media Type
D
Archive
Yes
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Doc Date:12/11/2001 III'll'll'IIIIII III <br />_ R~~EIVED <br />OCT 1 3 1995 <br />West Elk <br />Small Area Exemption°i~~nd~tais+sl;eology <br />Lone Pine Gulch Development Waste Pile <br />:1C~9.~R"Yb>'.:6'w.T.`V:~.K."f`u3:9XC.'.n,~~w':S:Lb~:':L"m:~:.W.Ga:~:m~~::~~nb.~:':'N`L'RJR:R:'n:`D`.~~'hcT:&L"rF::v:.:R::C:xivo:'!.(.Y':S:.k'::5.".R:RASXh:Cti:YaY.v.`.S'~.SfV.. ~`CR`~.'.'aTR3' ftlxYLL ~M~~.... <br />1. INTRODUCTION <br />The Mountain Coal Company, West Elk Mine, proposes a Small Area Exemption (SAE) to Permit No. C-90-007 <br />for the storage of development waste of an isolated entry in Lone Pine Gulch. This demonsvation is revised from <br />a version previously submitted to the Division of Minerals and Geology, Department of Natural Resources, <br />Colorado. This revision recognized the protection provided to the Development Waste Pile by an existing road <br />ditch, a smaller pile due to less waste than originally anticipated, and (as a result of a smaller pile) the elimination <br />of a mid-slope silt fence. Changes in the demonstration, highlighted by italics, have been made in Sections 1.2.2, <br />1.2.2 1), 1.2.2 3), 2.2, 4.1, 4.3, 7, and 9. Enclosures 2 through 6 have also been modified. <br />1.1 Methods of Analysis <br />This review and analysis is made using the Sediment, Erosion, Dischazge by Computer Aided Design (SEDCAD+ <br />Version 3) developed by Ms. Pamela 1. Schwab of Civil Sofrware Design and Dr. Richazd C. Warner, Agricultural <br />. Engineering Department, University of Kentucky. The analyses are based on field information provided by Kattileen <br />Welt (Environmental Supervisor) and Henry Barbe (Environmental Assistant), West Elk Mine, Mountain Coal <br />Company; a site visit by the undersigned; and other sources as referenced herein. <br />1.2 Project Description <br />The project is a proposed development waste pile associated with slopes being developed for the Lone Pine Fan <br />installation. <br />1.2.1 Location <br />The location of the proposed development waste pile is shown on Drawing LPG-103F, 7/29/94, Lone Pine Gulch <br />Fan/Portal Bench Design (Enclosure 1). it would be constructed as fill on an existing slope. <br />1.2.2 Configuration <br />Enclosure 2 is a sketch of the fully constructed development waste pile. The pile would rise approximately 5 feet <br />above the upper toe-of-slope and 35 feet above the lower toe-of-slope. It would cover approzitnately 0.70 acre. <br />Slopes of the pile would be at approximately 2.5 (horizontal) to 1 (vertical). <br />The development waste pile will be protected from erosion, and water resources will be protected from pollution, <br />by a number of best management practices. The construction of the proposed development waste pile would occur <br />aver a period of time as slopes (adits) are developed for the Lone Pine Fan installation. Thus implementation of <br />the practices will be phased over a period of time. These practices include: <br />(West Elk Lane Pme Gulch Development Waste Pile $AE, 12 October 1995, Page I of 7) <br />
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