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• • III IIIIIIIIIIIIIIII <br />999 <br />"~ STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />C0 <br />F <br />Department o(Natural Resources ~4 <br />~~O <br />, <br /> <br /> <br />1313 Sherman St., Room 215 ~ <br />~~ i <br />~ t~ <br />Denver,C080203 ~ i~ <br /> <br />Phone: (3031 866-3567 re~c• <br />FA%: (303) 832-8106 <br /> Roy Romer <br /> Governor <br />November 16, 1992 Mic narks. long <br /> D rviwon DIrrUUr <br />Mr. Paul Baker <br />Pennsylvania West Coal Corporation <br />777 Main Avenue, Suite 211 <br />Durango, CO 81301 <br />Re: Summary of Baseline Geochemistry and Groundwater Adequacy <br />Issues, Coal Gulch Mine, Permit No. C-92-079 <br />Dear Mr. Baker, <br />On October 30, 1992, during a conference call with Harry Ranney and <br />me, you requested that we itemize the information which would be <br />required on each new drill hole that would be installed. Unless <br />cores can be acquired from existing holes, I believe that you will <br />need to drill two holes, as per the October 20, 1992 letter. The <br />following information is derived from the correspondence the <br />Division wrote to Pennsylvania West on August 3, 1992, September <br />21, 1992, and October 20, 1992. <br />Please work with the Division in advance of collecting this <br />information to ensure that you are doing the correct testing. For <br />starters, please submit a monitoring map to the Division which <br />shows the proposed drilling locations and a generic completion <br />diagram, as well as the currently proposed monitoring wells. <br />Consider year-round accessibility as well as placement at points <br />around the mine to maximize the information which can be acquired. <br />A written monitoring plan that describes the frequency of sampling <br />to collect baseline information, as well as the long-term <br />operational plan, and a list of parameters to be sampled would <br />complete the picture. <br />Acquire geochemical information on the roof, coal seam, and <br />floor. Take composite samples from four feet of core for each <br />zone and have it analyzed for the following parameters: <br />pH Sulfur <br />Electrical Conductivity $ pyritic sulfur <br />Total Combustible Solids $ sulfate sulfur <br />Lithologic Classification $ organic sulfur <br />Textural Analysis Arsenic <br />$ Sand Boron <br />~ Silt Cadmium <br />~ Clay Copper <br />