PERMFILE134224

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: Exhibit 66 TOC and Mine Water Control Plan
• Media Type: D
• Archive: Yes

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TABLE 44E
Ditch and Culvert Summary
10-Year 24-Hour Storm
Pond/
Diversion Ditch Number Discharge
(cfs) Slope
(°/a) Depth
(feet) Shape Culvert Discharge
(cfs) Size
(inches)
MB-1 Dl-1 0.35 L8 0.61 V Cl-I 14.15 24 HDPE
D1-lA O.OS 26.6 0.39 V" CI-lA 0.57 12
DI-1B 0.02 26.6 0.37 V" CI-2 12.17 24 HDPE
Dl-2 1.57 5.0 0.64 V" C1-2A 2.68 24 HDPE
1.57 12.5 0.59 V°
Dl-3 6.63 2.0 0.64 3' Trap* C1-3 1.98 18 ADS
Dl-3D 0.11 15.0 0.40 V* C1-4 8.09 30 half
D1-4 2.06 <5.0 0.71 V* CI-S 35.54 42
2.06 >S.0 0.63 V*
DI-5 2.68 4.0 0.77 V* C1-6 2.07 12
D1-SA 1.24 12.0 0.65 V C1-6A 0.76 12
Dl-SAA 0.36 30.0 0.45 V* CI-6B 2.7 18
Dl-SB South <0.1 12.5 0.40 V* Cl-7 0.02 12
D1-SBNarth 0.34 7.0 0.49 V* CI-8 0.74 18 ADS
Dl-SC 0.74 2.0 0.63 V* Cl-9 0.76 12
D 1-6 East 3.84 1.6 0.71 2' Trap
D1-6 West 4.25 1.6 0.73 2' Trap
Dl-7 1.10 3.0 0.65 V*
D1-7A 0.30 3.0 0.52 V*
D1-7B 0.76 ].0 0.77 V
MB-3 D3-1 LS4 2.0 0.80 V C3-1 5.12 78
D3-lA 3.58 3.0 0.93 V* C3-lA 3.58 15
D3-2 2.09 6.0 0.69 V* C3-3 0.23 12
D3-2A 0.91 6.0 O.S9 V C3-4 OSO 12
D3-2B 1.80 2.0 0.83 V
D3-3 0.80 2.0 0.69 V
D3-4 0.23 10.0 0.48 V
D3-4A O.SO 6.0 O.S7 V
D3-4B 0.50 2.0 0.45 1'Trap*
MB-5 DS-1 5.36 1.5 1.20 V CS-1 negligible 12
DS-2 3.98 1.5 1.10 V
SG-1 DSG-1*** 13.8 4.0 0.78 2'Trap CSG-1 10.61 30
DSG-2*** S.S2 13.0 O.S2 2' Trap^
DSLY-13*** O.S3 7.26 0.56 V
RPE DRPE-1* 10.83 3.5 1.2] V
DRPE-2* 22.21 2.0 ].62 V
NSSA DNSSA-1 3.00 2.5 0.93 V
DNSSA-2 2.65 2.5 0.93 V
DNSSA-3 5.65 2.S 1.10 V
Clean DCW-IA 9.01 2.0 0.78 4'Trap
DCW-IB 1.50 9.0 0.41 4'Trap
DCW-3 1.07 1.S 0.79 V
DCW-6A' 8 li.0 O.S1 3'Trap CCW-1A` 19.2 30
DCW-6B' 20 4.0 0.80 3' Trap CCW-1B' 158.5 48 (54)
DCW-6C' 13 5.0 0.98 W
Exhibit 66 1 Revised Nov. 1996 PR07; Revised Aug. 7997 MR220;
Revised Sept. 1997 MR?25; Revised Nov. 1997 h!R?31; Revised Dec 1997 d4R235,
Revised ,Liar. 1998 h/R?~JO; Revised Mar. 1999 hIR258 & ,LIR?59; Revised May ?000 TR86