PERMFILE126208

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 6/24/2004
• Section_Exhibit Name: Exhibit 07 NPDES Permit
• Media Type: D
• Archive: No

Mountain Coal and Beaz Coal Water Quality Assessment CO-0038776 and CO-0044377
Table A-11
Ammonia Assimilative Capacities for the North Fork of the Gunnison River
at the Mountain Coal Outfall 004
Parameter ~' . Q1 ~c.)`s~ Qz ~cfs~ Q3 ~~fs~ ~ M3` ' Ms `?_ ~ %Mz ~,°
. __~
NH3, Tot (mg/1) Jan 43 0.28 43.28 0.065 0.70 98
NH3, Tot {mg/]) Feb 44 0.28 44.28 0.065 0,60 85
NH3, Tot (mp~l) Mar 47 0.28 47.28 0.065 0,40 57
NH3, Tot (mg/1) Apr 70 0.28 70.28 0.065 0.40 84
NH3, Tot (mg/1) May 234 0.28 234.28 0.065 0.30 197
NH3, Tot (mg/1) Jun 223 0.28 223.28 0.065 0.30 187
NH3, Tot (mg/1) Jul 57 0.28 57.28 0.065 0.30 48
NH3, Tot (mgll) Aug 43 0.28 43.28 0.065 0.30 36
NH3, Tot (mg/1) Sep 43 0.28 43.28 0.065 0.30 36
NH3, Tot (mg/1) Oct 52 0.28 52.28 0.065 0.30 44
NH3, Tot (mg/1) Nov 45 0.28 45.28 0.065 0.30 38
NH3, Tot (mg/1) Dec 43 0.28 43.28 0.065 0.50 67
Table A-12
Ammonia Assimilative Capacities for the North Fork of the Gunnison River
at the Mountain Coal Internal Outfal1007
Parameter.° ." Q~ ~c.1s) ''. ~z (c.~), Q3'(~.fs~ =Mr ~s = _ 1Yfz
,Tot (mg/1) Jan 43 0.016 43.016 0.065 0.70 1,707
NH3, Tot (mg/I) Feb 44 0.016 44.016 0.065 0.60 1,472
NH3, Tot (mg/1) Maz 47 0.016 47.016 0.065 0.40 984
NrI3, Tot (mg/]) Apr 70 0.016 70.016 0.065 0.40 1,466
NH3, Tot (mg/I) May 234 0.016 234.016 0.065 0.30 3,437
NH3, Tot (mg/1) Jun 223 0.016 223.016 0.065 0.30 3,276
NII3, Tot (mg/1} Jul 57 0.016 57.016 0.065 0.30 837
NH3, Tot (mg/1) Aug 43 0.016 43.016 0.065 0.30 632
NH3, Tot (mg/1) Sep 43 0.016 43.016 0.065 0.30 632
NH3, Tot (mg/1) Oct 52 0.016 52.016 0.065 0.30 764
NH3, Tot (mg/1) Nov 45 0.016 45.016 0.065 0.30 661
NH3, Tot (mg/1) Dec 43 0.016 43.016 0.065 0.50 1,170
Appendix A Page 19 of 20 Last Revised 3/9/2004