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t <br />>~~ <br />81226 <br />`REGEN,ED <br /> <br />!~~ t•6891 <br />Mr. Robert Schukle ~+ •. <br />Colorado Department of Health 1 6 }9$}~ <br />Water Quality Control Division 5EP <br />Den~erasColoradov80220 ~~D v,riD ~~ uA~ ~ ouacEs <br />'COLA, ~~ <br />Dear Mr. Schukle: ' <br /> <br />In compliance with the provisions of the Federal Water Pollution Control <br />Act, as amended (33 U.S.C. 1251 et. seq.; the "Act"), and the Colorado <br />Water Quality Control Act (25-8-101 et. seq., CRS, 1973 as amended), GEC <br />Minerals, Inc., is herewlthin requesting additional ponds to be included <br />in GEC's current NPDES Waste Discharge Permit (Permit Number: CO-0036692, <br />Fremont County). <br />According to GEC Minerals. Inc., mine plan, a number of sediment control <br />ponds will have to be installed from time to time. As up-to-date sediment <br />ponds B,C,D, and temporary ponds are constructed as planned, sediment ponds <br />F and G will be constructed in the summer of 1982 and sediment pond E will <br />be deleted owing to changes in mine planning. <br />e <br />This is an active surface coal mine. All run-off is collected and contained <br />by a system of collection (diversion ditches) and holding ponds designed to <br />contain a 10-year, 24-hour precipitation event. If necessary, GEC Minerals <br />will submit data which verifies that containment or treatment structures <br />have been designed and constructed for the 10-year, 24-hour precipitation <br />event. The 10-year, 24-hour precipitation event for these facilities shall <br />be 3.0 inches. The rain gauges of record shall be Canon City Station, Index <br />No. 1294. ~~ <br />Attached please find the map to specify each individual sediment control <br />pond, its location, size and the related collection/diversion ditch for your <br />review. <br />GEC Minerals, Inc., appreciates the opportunity to submit the additional <br />ponds information for existing NPDES Waste Discharge Permit Expansion in a <br />productive manner. Should you have any questions regarding this sub- <br />mission, please do not hesitate to call us. <br />Sincerely urs, <br />.~ <br />L. K. CHEN <br />VP - Engineering 8 Planning <br />cc: F. E. Snider, w/o Enc. <br />Enclosure <br />III III'111111111111 <br />GEC MINERALS, INC. <br />FLORENCE, COLORADO <br />P.O. BOX 225_ <br />~, <br />r <br />~c~n <br />~i.~ !.~. <br />,.. <br />,._~ '11 L~;~.~~~~I ,,,,x.~„ ,. ,., <br />~i~.' ,.. '.Y .. il).'YIK~Ii.;~r.,,osiR~t~if°~`'1~'+~pv, ~x M w <br />