PERMFILE67692

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 49 PHC Modification Support Tables
• Media Type: D
• Archive: No

• •
b
b
'A
O
lgJ
m
W
0
N
O
O
Mine discharges (max. loading)
iu5 max. comornea
115 max combined 8 individual
109 max. individual
115 value to use w/115 max.
Table E49-14
Impacts to Receiving Streams -Case 3
Flow TDS
cis ~ mglL
0.09; 3C
--~---
1.34; 61
0.58? 23
0.90; 2~
Conduct. ; Sulfate i Year
Mean Flow Dry Year Flow
Estimated Baseline (Exhibit 32) Flow ~ TDS ~ Conduct. ~ Sulfate Flow ~ TDS I Conduct. ~ Sulfate
cfs ? mg/L ?umhos/cmj mg/L cfs ? mg/L ! umhoslcm? mg/L
Trout Creek, above Fish Creek 46.4; 383; 511; 158 16.5; 412; 549; 174
Fish Creek above confl. W/ Trout 26.01 4411 588? 172 6.91 _
4561 6081 181
Trout Creek below Fish Creek 72.4;
; 395;
1 527;
1 158 23.41

1 4201
1 5601
1 172
Predicted Values 1
1
1
1
Combined 109 + 115 Load Maximum ? 1 1 ?
1 1
Trout Creek, above Fish Creek 46.5? 388? 518? 161 16.61 4271 569? 182
Fish Creek above confl. W/ Trout Creek 27.31 718; 9161 325 8.2T 1377; 1701 ? 690
Trout Creek below Fish Creek 73.8
1 5101
~ 6651
1 222 24.8j
1 741?
1 9431
1 350
109 at individual Load Maximum 1 1 I
1 ? 1
Trout Creek, above Fish Creek 47.11 636; 63? 193 17.11 654? 8731 277
Fish Creek above confl. W/ Trout Creek 27.3t 515T 655; 259 8.2; 7011 828; 471
Trout Creek below Fish Creek 74.41 592? 280? 218 25.31 669? 859 .340
Mine Discharge Data Flow & conductivity from estimated future water balance. TDS calculated from conductivity: TDS = 0.75 'cond.
except for conductivities greater than 5000 umhoslcm TDS = 0.84 'cond.
Sulfate for 109 from 3/30199 analysis of 6 Right inflow, lower values prorated from TDS value
Sulfate for 115 from 2/8/99 analysis, lower values prorated from TDS value
Baseline data taken from Exhibit 32
Predicted values calculated using mass balance equation shown in text
TR 99-32
Table E49-14
5/3199