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iiiiuiiiiiiiiuiii HARRISON WESTERN CORPORATION October 8, 1992 Mined Land Reclamation Division Department of Natural Resources Attn: Mr. Steve Renner 1313 Sherman St., Room 215 Denver, CO. 80203 Dear Mr. Renner, ~~~~i'vf_:; OCT 131992 Divisiuw ;-, MINERALS & iiEU! ~.'.•• The following letter is offered to document the ongoing efforts by HWC over the past four months to meet the requirements of the compliance agreement signed on April 22, 1992 and to address the N.O.V. issued on July 28, 1992. HWC started the required work during the week of June 1 and completed the outlined items by June 13, 1992. MLRD inspected the work on June 11 as documented in the coal inspection report of June 11. It was pointed out that some items needed more attention, although the majority of the required items were deemed to be adequate, including the installation and location of the Diversion Ditch and Culvert. The next inspection my MLRD took place on July 1, 1992, two weeks after the completion of the required work. The report was primarily directed at the revegetation aspect of the compliance agreement, although the report pointed out some items which needed additional work in order to complete the requirements. The most notable item being the lower Rock Check Dam and its relationship to the Diversion Ditch. In response to the concerns of the July 7, 1992 report HWC arranged for the areas where the seed and straw had blown away to be reseeded and additional mulch laid. There was also some hand work completed on tite lower Rock Check Dam as it was not possible to get any type of equipment into the side. This work took place during the period of July 6-9. The next inspection by MLRD took place on July 16, 1992 approximately 2 weeks after the last inspection. This report addresses the pond and the Diversion Ditch, and primarily discusses the pond volume requirements. For the first time, it was pointed out that the pond must be of a size to accommodate 1.14 acre feet of water, which has been determined by MLRD to be the appropriate size for a 10 year 24 hour event. The determination was made a full month after the work was completed by HWC and after the initial inspection was conducted during the time of the initial work. The report also points out that a primary spillway must be opened again. This is the first time this requirement has been addressed. The Diversion Ditch was 4860 Robb Street, Suite 101, Wheat Ridge, Colorado 80033 •1303) 467-1239 FAX (303) 467-3668