PERMFILE103025

• Permit No: M2002004
• IBM Index Class Name: Permit File
• Doc Date: 7/8/2002
• Doc Name: Response to Preliminary Adequacy Review APPENDIX B E F
• From: GCC Rio Grande Inc
• To: DMG
• Media Type: D
• Archive: No

STORM SEWER SYSTEM DESIGN
(RATIONAL METHOD PROCEDURE)
PROJECT: OCC Red Rock Plant and Mine
CALCULATED BY: WPR DATE: /15/02
Rainfall Intensity epuetlpns: I = (28,5'Pt)/ry O+TC)01°°
Menning'e n-value = 0.013
Whera P1 = 1-hour preclpttetfon = 2.23
SHEET NO:
JOB NO: 02-147
DESIGN STORM 2~

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' 1 pthite 15.0 0.50 4.71 11.10 11.10 26.1 5.55 26.1 26.1 30 1-2 24 27.8 26.1 1.5 8.8 380 0.7 Ty a "D" inlet
' 2 P-2 15.7 0.75 4.60 14,10 25.20 48.7 16.13 74.2 48.7 30 2-3 30 50.3 26.1 1.5 10.3 250 0.4 50 R of Type R inlet
3ws P-4 16.1 0.75 4.55 6.10 31.30 20.8 20.70 94.1 20.8 30 3 42 123.5 94.1 1.5 12.8 0 0.0 20 n of Type R Inlet
3 P-3 16.1 0.2 4.55 7.90 39.20 7.2 22.28 101 7.2 30 3-4 4Z i 23.5 101.3 1.5 12.8 255 0.3 10 R d Type R inlet
° 4 a-e 16.5 0.75 4.50 7.90 47,10 26.7 28.21 127 26.7 30 4-5 42 123.5 127.0 1.5 12.8 190 0.2 25 R of Typo R inlet
° ws P-9 16.7 0.75 4.47 5.00 52.10 16.8 31.96 143 16.8 30 5, uls 20 R d Type R inlet
CALCULATE STORM SEWER SEGM ENT #2
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e B P-7 10.0 0.65 5.61 7.20 7.20 26.3 4.680 26.3 26.3 30 6-7 24 27.8 26.3 1.5 8.8 320 0.6 25 R d Type R Inlet
10 7 P-8 10.6 0.75 5.48 5.00 12.20 20.6 8.430 46.2 20.6 30 7-5 30 50.3 46.2 1.5 10.3 300 0.5 20 R d Type R Inlet
t+ 7
UI9 P-11 11.1 0.75 5.38 1.60 .13.80 6.5 9.630 51,8 6.5 30 5, u/s tonarypeRlnlet
12
+a COMBINE TWO STORM SEWER SEGMENTS
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to 5 16.7 4.47 65.90 41.59 186 5-8 54 241.4 185.9 1.5 i5.2 300 0.3
1e 8 P 10 17.0 0.50 4.43 12.80 78.70 28.3 48.0 212 28.3 30 8-9 54 0.0 212.4 30 R of Type R inlet
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