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-11- <br />Coors is proposing the use of sewage sludge as a soil amendment. The source <br />of the sludge will be from the C,olden Sewage Treatment Plant. This plant <br />is scheduled to be completed in the spring of 1982. Since the Division <br />cannot obtain an analysis of the sludge material at this time, the following <br />stipulation is necessary: <br />COORS ENERGY MUST CONTACT THE DIVISION TO DETERMINE WffAT ADDITIONAL <br />ZNFORAIATION WILL BE REQUIRED TO OBTAIN APPROVAL TO APPLY THE SLUDGE. <br />APPROVAL MUST BE OBTAINED FROM MLRD PRIOR TO ZTS USE ON THE MINE <br />SITE. <br />XIT. Vegetation (2.04.10, 2.05.4(2)(e), 9.I5) <br />The Division has reviewed the baseline vegetation information (pages 74-85, <br />Appendix Q-Z), the proposed revegetation plan (pages 116-117, Appendices <br />Q-3, Q-4, Q-5, Q-6, ~-7), and revegetation performance standards and success <br />criteria. The operation has been found to be in compliance with the fol- <br />lowing exceptions. <br />Sampling for baseline vegetation productivity on the Valent Sand and Osgood <br />Sand types was found to be inadequate (Valent Sand confidence Iess than <br />50%, Osgood Sand confidence, 59%). Zt is, therefore, stipulated that: <br />COORS ENERGY COMPANY h1UST COLLECT ADDITIONAL SAMPLES IN THE 1981 <br />GROWING SEASON FOR VEGETATIVE PRODUCTIVITY OF THE VALENT SAND AND <br />OSGOOD SAND CO1•fA1U~72TIES SO AS TO ACHIEVE A CONFIDENCE LEVEL OF AT LEAST <br />80% (WITH A SAMPLE MEAIl WITHIN 10% OF THE TRUE M.EA1J). THIS INFOR- <br />MATION MUST BE SUBMITTED TO THE DIVISION BEFORE DECEMBER 31, I9B1. <br />At such time as the Division receives the above-stipulated information, <br />the Division will determine the comparability of the reference and pre- <br />mine areas in terms of vegetative productivity. <br />Coors Energy Company has requested a variance from returning reclaimed Land <br />to pre-mining woody plant densities and has proposed a standard of 302 <br />stems/acre. This number was based on field observations of sites in good <br />range condition. The Colorado-Division of Wildlife has reconvnended densities <br />(based on topography) from 50-1000 stems/acre. At this time the Division finds <br />that Coors has performed adequate baseline woody plant density sampling, but has not <br />