2022-10-20_HYDROLOGY - M2007044 (4)

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Table 1 Whirlwind Mine Water General Parameters Major Ions(mg/L) Metals(mg/L)(i) Flow ! i TSS TDS pH Hard Alk Cond j Sample Information (9Pm) (mg/L) (mg/L) (s.u.) i (mg/L) (mg/L) (NS/cm) Na i Ca i Mg K Cl F NO3 P HCO3 SO4 Al Sb As , ea Be Whirlwind Mine WW-1, EFRC, 9/11/06 NA 390 7.5 57 302 708 144 13 6 10.5 29 0.39 0.72 0.01 365 19 0.015 I 0.3 Whirlwind. EFRC, 10/24/06 NA 382 8.3 280 140 12.4 4.8 9.0 20 0.6 1.2 36 1.5 0.023 0.2 WW Pool, EFRC, 1/17/07 NA 21.3 340 8.60 43.8 266 595 123 9.2 5.0 9.3 17 0.3 0.5 <0.1 314 28 0.2 <0.05 0.027 0.1 <0.01 Whirlwind Pool, EFRC, 4/27/07 NA <1.0 358 8.72 48.5 268 106 10.2 5.6 9.9 14 0.5 0.5 <0.1 311 27 0.1 <0.0006 0.026 + 0.1 <0.01 WW Sump, EFRC, 3/10/08 2.4 1 3,540 661 8.21 296 143 116 22.9 21.9 53 0.4 4.3 2.85 361 38 0.062 i <0.01 WW Sump, EFRC, 6/19/08 2.8 132 536 10.0 252 592 150 4 1 6 17 0.7 1.9 0.25 90 88 0.046 0.1 <0.01 WW Sump, EFRC, 9/8/08' 2.2 26 460 9.11 I 260 649 138 10 7 8 16 0.5 1.8 0.08 318 62 0.044 i 0.1 <0.01 WW Sump, EFRC, 12/16/08 2.2 8.75 j 609 WW Decline, EFRC, 4/21/10 1.9 8.07 576 WW Decline, EFRC,2/7/11 1.7 8.49 590 WW Decline, EFRC, 11/9/11 1.0 356 8.33 631 0.3 42 Whirlwind Decline(Brushy Basin Formation Whirlwind Seep, EFRC, 5/3/07 2 to 4 360 8.64 278 119 10.7 5.8 21.8 33 0.5 1 0.2 <0.3 326 30 0.1 0.024 0.2 "Upper"Whirlwind Sump, EFRC 5/3/07 NA 574 8.69 362 188 9.8 4.7 12.0 14 1.6 3.1 <0.3 421 93 1.29 0.032 <0.1 Colorado Water Standards Ground Water, Domestic 6.5 to 8.5 250 4.0 10.0 250 0.006 0.01 2.0 0.004 Ground Water,Agriculture 6.5 to 8.5 2 100 5 0.1 0.1 Surface Water, Stream e,f 6.5 to 9.0. 250 0.100 0.100 Surface Water Domestic 5.0 to 9.0 250 2.0 10.0 250 0.1 1.0 0.004 Surface Water Agriculture 100 0.1 0.1 EPA Water Standards(h) Maximum 30 6.0 to 9.0 Average 20 6.0 to 9.0 Notes: 1. Water standards are provided for reference only.These standards do not apply to the mine water unless it is discharged or used for drinking water, irrigation, or other regulated uses. 2. Concentrations or activity levels above a state or federal standard are shaded for reference purposes. Shading indicates that the measured level is elevated compared to certain standards of water use. 3. Metal and radionuclide levels are reported as total recoverable. Nitrate sample recollected on 9/18/08 due to hold time exceedance on 9/8/08 sample Table 1 Water Quality Data Whirlwind Mine Water 1 of 2