Laserfiche WebLink
• Mr. Jeff Deckler <br />Spetember 12, 1985 <br />Page Three <br />AJc eguacY Issue (S) <br />The "automatic" discharge orifice for Pond 007 will be at an elevation of 7371.3, the <br />100% sediment level. The emergency spillway invert elevation will be 7379.5. <br />Adequacv Issue (6) <br />Wyoming Fuel Company has chosen not to install a sewage treatment plant at this <br />time and is evaluating leach field septic systems that will not discharge into Pond <br />OOb. <br />Adequacv Issue (8) <br />The attached letter from Nalco Chemical Company describes the chemical make-up <br />of the flocculants used in the thickener and belt press processes. These chemicals <br />will be highly diluted in any potential discharge and are well below any recognized <br />regulatory standards for toxicity. <br />• Also attached are typical analyses of the refuse material which is made up of coal, <br />shales and other rocks naturally associated with coal that have been separated from <br />the marketable product. This material is nominally less than 60 mesh and is <br />normally dewatered by the thickener and belt press for permanent disposal in the <br />refuse disposal area. We are unaware that this material has any properties that <br />would be of environmental concern. >n addition, at no time would the accumulation <br />of this material in the pond exceed approximately .5 acre-ft. Such accumulation <br />should be considered temporary since the material will all eventually be transported <br />to a permanent disposal site; i.e., Pond 006 should not be considered a permanent <br />refuse disposal site. For the above reasons Wyoming Fuel does not believe any <br />seepage from 006 will cause deterioration of the Purgatoire water quality. <br />Hopefully, the above responses will be sufficient for the Division to approve this <br />revision. Should you have additional questions or need additional information, please do <br />not hesitate to contact me. <br />Very truly yours, <br />~Lti~s~ <br />David M. Stout <br />Environmental Coordinator <br />DMS/tl <br />u <br />