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-38- <br /> A TIMELY FASHION TO COMPLETION BY DECEMBER 31 , 1982. THE DIVISION <br /> SHALL BE KEPT INFORMED BY MONTHLY LETTER OF THE PROGRESS OF THIS TASK <br /> BY THE OPERATOR. UPON COMPLETION OF PHASE III, THE RECLAMATION PLAN <br /> SECTION OF THE ORCHARD VALLEY MINE PLAN SHALL BE APPROPRIATELY AMENDED. <br /> XVIII. COAL PROCESSING WASTE AND NON-COAL PROCESSING WASTE (2.05.3(8) , <br /> 2.05.4(2) (f) , 4.10, 4.11) <br /> Colorado Westmoreland, Inc. (CWI) is currently disposing of non-coal processing <br /> waste at the Delta County Landfill. CWI proposes to continue this practice. <br /> CWI's plan for non-coal processing waste disposal is in compliance with the <br /> regulations. <br /> CWI currently disposes of coal processing waste at a small (6 acre) site <br /> below the large fill which comprises the crushing and screening level at <br /> the downgrade boundary of the Orchard Valley mine's surface facilities area. <br /> Historically, waste has been generated at very low rates resulting in an <br /> accumulation of only several thousands yards 3 to date. The Division did <br /> not consider the presentation supporting continued use of the existing fill <br /> adequate to satisfy the requirements of the regulations. CWI was instructed <br /> in the preliminary adequacy review to complete an appropriate geogechnical <br /> investigation and stability analysis for the proposed disposal site and <br /> structure. <br /> CWI has retained the services of Merrick & Company and Geohydro Consultants <br /> to study the slope stability of the entire surface facilities area at the <br /> r Orchard Valley mine. One portion of this project involves the investigation <br /> of alternate sites for the proposed coal processing waste pile and the design <br /> of an acceptable waste pile. Phase I of this study was completed and a summary <br /> report by Geohydro Consultants submitted- to the Division for review on July <br /> 21, 1981 (see Volume 10, Stability Analysis) . The analysis has been performed <br /> in accordance with the prudent state-of-the-art of stability analysis and is <br /> acceptable. Phase I determined that the proposed site for the waste pile was <br /> not a desirable location and the consultants have recommended the investi- <br /> gation, to occur during Phase II of this study, of several alternate sites. <br /> Phase III of this investigation includes the design of an acceptable coal <br /> processing waste disposal structure which will conform with the regulatory <br /> requirements of Rule 4.10. <br /> In order to assure compliance with the pertinent regulations, the Division <br /> finds that the following stipulations need to be placed upon approval of <br /> the permit: <br /> COLORADO WESTMORELAND, INC. IS DIRECTED TO COMPLETE PHASE II OF THE GEO- <br /> TECHNICAL AND STABILITY ANALYSES OF ITS SURFACE FACILITIES AREA AT THE <br /> ORCHARD VALLEY MINE, AS OUTLINED IN THE VARIOUS LETTERS OF PROPOSAL <br /> FROM MERRICK & COMPANY AND GEOHYDRO CONSULTANTS INCLUDED IN VOLUME 10 <br /> OF THE AMENDED APPLICATION. PHASE II OF THIS STUDY INCLUDES AN ANALYSIS, <br /> OF ALTERNATE PROPOSED SITES FOR A COAL PROCESSING WASTE PILE AT THE <br /> ORCHARD VALLEY MINE. THE SCOPE OF PHASE II SHALL INCLUDE TEST DRILLING <br /> AND ESCAVATION OF TEST PITS, THE INSTALLATION OF APPROPRIATE WATER <br /> QUANTITY AND QUALITY MONITORING WELLS, THE PERFORMANCE OF VARIOUS ROCK <br /> AND SOIL TESTS, AND THE PERFORMANCE OF A SERIES OF STABILITY ANALYSES <br />