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^ <br />F <br />• <br />MOUNTAIN DIVISION <br />9065 QUINCE STREET <br />HENDERSON, COLORADO 80640 <br />(303) 287-9606 <br />FAX (303) 289-1348 <br />October 25, 1993 <br /> <br />III III III III IIII III <br />999 <br />t,vnrvnATE OFFICE <br />313 S. PHILLIPS AVENUE <br />P.O. BOX 5829 <br />SIOUX FALLS, SOUTH DAKOTA 57117 <br />(605} 334-5000 <br />FAX (605)334-3656 <br />RECENEL <br />OCT 281 <br />Mr. Nick Melliadis <br />Colorado Department of Health <br />APCD-SS-BI <br />9300 Cherry Creek Drive South <br />Denver, Colorado 80222-1530 <br />DIV19pn Uf MinEfal9 a (ie010gV <br />Re: Permit 89WE068F <br />Air Quality, Carr Sand and Gravel Plant <br />Weld County, Colorado <br />Dear Mr. Melliadis, <br />We would like to ammend the above permit as follows: <br />1. Include the use of trucks for material haul. We enclose <br />our agreement with the Weld County Road and Bridge <br />Department for your review. Our truck trips per day will <br />be quite variable, but in the event of a large C.D.O.T. <br />paving project, for example, we could experience up to 100 <br />loaded trips per day, albeit for a short duration. Under <br />normal circumstances, we expect up to 30 trucks per day. We <br />request that you revise condition #6 to include this activity. <br />2. Include the use of a sedan-grass or similar cover-crop for <br />the backfilled areas. Our experience with dry-land seed mix <br />this past season was a failure. The local soil conservation <br />office informs that if a cover crop is planted in June of <br />every year, a grass mix (regulated by the Colorado Department <br />of Natural resources, M.L.R.D.; copy attached) can then be <br />planted in November. We ask that you reconsider item #5 in <br />the permit conditions to include this concept. <br />