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<br />COLORADO DISCHARGE PERMIT SYSTEM (CDPS) <br />AMENDMENT NO. 2 -RATIONALE <br />SENECA COAL COMPANY <br />SENECA II, SENECA II WEST AND YOAST MINES <br />PERMIT NUMBER CO-0000221, ROUTT COUNTY <br />I. TYPE OF PERM/T <br />II. FACILITY /NFORMAT/ON: <br />A. Facility 7ypc <br />Fee Category: <br />Annual Fee: <br />B. SIC No. <br />• <br />C. Legal Contact <br />D. Facility Contacts <br />G. Brad Brown, General Manager <br />36600 Routt County Road 27 <br />Drawer D <br />Hayden, CO 81639 <br />(970)+276-5103 <br />• <br />E. Facility Location <br />F NEW Discharge Points <br />Table II-I -New Discharge Points <br />Amendment <br />Coal mining, Mine Water and/or Prep Plant Water <br />Category 02, Subcategory 2 <br />$612 <br />1221 <br />W Howard Carson, President <br />Seneca Coal Company <br />1300 So. Yale Street <br />FlagstaJj; AZ 86001 <br />(602)+T74-5253 <br />Dennis !ones, Hydrologist 1 <br />36600 Roult County Road 27 <br />Drawer D <br />Hayden, CO 81639 <br />(970)+276-5109 <br />In the SW 1/4 of Sec. 27, T6N, R87W, at 36600 Rout1 County Road, south- <br />southeast ojHayden, CO <br />,. <br />OutjaB :.. . <br />Wastewater Souiee(s):".. : '; <br />Avg Flow, : <br />M D'"::".:" <br />.Daily Mar <br />FYow:.MGD:: <br />70-yr/24-hr <br />Event Vol <br />Design : <br />CaaaeW: .. <br />Receiving.. : . <br />Winer . <br />010 SR, SS, MW, WP 0.181 3.432 2.444 MG 5.116 MC unnamed Crib <br /> to Grassy <br /> Creek <br />011 SR, SS, MW 0.032 0.963 0.479 MG 0.891 MC unnamed trib <br /> to Grassy <br /> Creek <br />'SR' memuruyan rwoff 'SS' meant rpd4 tprine dirrharge, 'MR" memo mine pU pumpage, 'WP' mrans production weU pumpage (a potable weU ro suppty <br />xmrr Jot dart rupprrrrian, ec.). <br />II/. RECE/V/NG STREAM <br />A. Identification, Classification and Standards <br />1. Identification: Outjalls 010 and 011 discharge to unnamed tributaries to Grassy Creek, Segment 12 of the Yampa River <br />Sub-basin ojthe Upper Colorado River Basin. <br />