_GENERAL DOCUMENTS - C1981017 (216)

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• Mr. James Herron, MLRD Page 2 5. Mid-Continent Resources Engineering Department is presently designing this alternate storage area and will sub- mit plans shortly. 6. Air quality permits enclosed. 7. The slurry pond will be used only very temporarily-- actually only as long as it takes to construct the new pond adjacent to it (see Geo-Hydro report April 184, 4/26/84) . The slurry pond would remain a slurry pond. The new pond requires 0. 59 ac. ft . of storage and the slurry pond has 1. 9 ac. ft . of storage. For a period of 30 days we would ensure that there is 0. 6 ac. ft . of storage in the slurry pond; this level would be marked on the side of the pond. The new pond has a NPDES discharge permit No . 396-020, and will discharge into Coal Creek. 8. Sheet 3 of 7 has been revised to ensure that all dis- turbed drainage on the north side of the hill will go into the new sediment pond 396-020. 9. This topsoil has been combined into the topsoil stock- pile adjacent to the No. 1 transfer point . 10. The conveyor belt through this area will have a full pan underneath that will be an extension of the bottom of the tube crossing Coal Creek. 11 . We will salvage 18 inches of topsoil along the belt line (see Question No . 2, 18, 333 cu. yds. ) and 24 inches across the face-up area (2 , 222 cu. yds. ) . 12. Geo-Hydro is presently working on revising the Sheet 3 of 7 and the computations pertaining to the topsoil pile area. 13. Geo-Hydro is presently working on the culvert locations, sizes and supporting calculations. 14 . Geo-Hydro is making the appropriate corrections . 15. Geo-Hydro is revising Sheet 3 of 7 to show the appropriate drainage for this area. 16 . The new Geo-Hydro calculations for pond -020 show this area controlled. All the Geo-Hydro revisions should be in your office by 5/14/84 . Contact me if you have questions or need more information . Sincerely yours, DWBowman:ms Environmental Coordinator Enclosures