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• TABLE E-1, COMPARISON OF MAXIMUM AND MINIMUM BASELINE AND <br />WATER YEAR 1993 VALUES <br />FOR SEASONAL SURFACE WATER MONITORING PARAMETERS <br /> Ave.30 Coad. <br /> Flow TSS TDS Fe Mn (µmhos <br />Location (CFS) pH (mg/L) (mg/L) (mg/L) (mg/L) Q25°C) <br />Sylvester Gulch <br />Minimum' Drys 6.06 23.2' 286.° 0.50° 0.001° 350.' <br />Maximum' 1.96' 8.7' 4600.10 584.° 12.3010 0.37010 920." <br />04/26/93' -' 8.5 1410 382 49.6 0.64 531 <br />06/07/93= 3.71 8.4 Il6 370 2 ~0 0.05 690 <br />09/07/93= ' 8.0 12300 382 11.3 0.11 708 <br />North Fork Gunnison, Above the Mine <br />Minimum' 1730 7.4" Q.013 32.' 0.03" 0.000' S6.s <br />Maximums 708031 9.0° 162.0' 150." 2.90' 0.075° 250.° <br />04/26/933 1140 7.8 110 5.82 O.ll 608. <br />06/07/933 2950 7.2 54 3.40 0.07 716. <br />09/07/93'- 238 7.2 64 0.50 <0.02 694. <br />North Fork Gunnison, Below the Mine <br />Minimum' 7.0° Q.013 4.0's O.OlO" 0.0002' 40.16 <br />Maximum' 8.813 137.0" 178.0" 3.800` O.OSOOs ~~919 <br />04/26/933 7.9 118 6.25 O.II 585. <br />• <br />06/07/933 7.6 74 4.47 0.07 758. <br />09/07/93= 6.9 90 1.02 <0.02 675. <br />' Baseline minimum and maximum monthly average parameters established from July 1975 through October <br />1981 inclusive, as reported in the Annual Hydrology Report, Mt. Gunnison No. I Mine, Water Year 1989. <br />3 Date of sample for measurements reported. <br />3 Baseline minimum and maximum monthly average parameters established from October 1975 through <br />October 1981 inclusive, as reported in the Annual Hydrology Report, Mt. Gunnison No. I Mine, Water Year <br />1989. <br />' Submerged gage (debris). <br />s Jun 77 6 Jun 81 'tun 79 ° Jun 80 <br />° Jun 78 10 Apr 78 " Dec 77 '3 Oct 75 <br />'3 Oct 78 "Oct 80 's Sep 77 '6 Oct 81 <br />" Apr 76 "Jul 75 19 Jan 76 3° Nov 50, Daily Mean <br />3' May 84. Daily Mean <br />r1 <br />LJ <br />