PERMFILE134266

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 70 REFUSE PILE EXPANSION
• Media Type: D
• Archive: No

TABLE 11. SUMMARY OF ESTIMATED TOTAL RUNOFF FOR EACH PHASE'
RPE Diverted Sediment Sediment Sediment Sediment
Constru Clear Water Water Water Water Water
coon 100-yr 24-hr 100-yr 24-hr 25-yr 24-hr 25-yr 24-hr 10-yr, 24-hr Event
Phase Event Peak Event Peak Event Peak Event Cumulative Cumulative Runoff
Runoff (cfs) Runoff (cfs) Runoff (cfs) Runoff (acre-fr) (acre-fr)
1 46 7.2 5.0 0.36 0.26
2 -Fill 46 6.0 3.5 O.I9 0.09
3 -Fill 46 38.8 26.2 1.4 0.98
4 -Fill 46 53.5 36.0 2.0 1.41
1. Calculations shown in Appendix L.
TABLE 12. SEDIMENT YIELDS FOR RPE PHASES'
RPE Phase Exposed Reclaimed Annual Average Sediment Yield for
Refuse RPE Surface Sediment Type II
(acres) (acres) Yield for Phase ]0-yr,24-hr Storm Event
(acre-ft) (acre-fr)
2-Fill 3.8 0 0.15 0.08
3 -Fill 6.1 11.3 0.44 0.23
4 -Fill 4.4 17.1 0.86 0.46
1. See Appendix L (or calculations.
TABLE 13. 2H:1V SIDE-SLOPE V-NOTCH SEDIMENT DITCH DESIGN PARAMETERS"
Ditch
Segment Flow
Capacity
(cfs) Segment
Length (ft) Segment
Slope (%} Ditch
Depth (ft) RipRap
Diameter
(in) Geotextile (or
equiv.)
Liner
SED-A 8.5 180 I3.8 1.9 6 YES
SED-B 49 625 1.6 3.0 6 NO
SED-C 20 485 6.2 2.0 6 YES
SED-D 8.9 483 12.4 1.9 6 YES
1. Refer to Figures B-6, B-10, B-14, and B-I8 for location of ditches for Phases 1 through I V.
2. See Appendix L for calculations.
TABLE 14. 2H:1V SIDE-SLOPE V-NOTCH CLEAR WATER DIVERSION DTfCH/BERM
DESIGN PARAMETERS
Ditch Construction Flow Segment Ditch RipRap Geotextile
Segment Phase Capacity Length Slope Depth (ft) Diameter (or equiv.)
(cfs (ft) (%) (in) Liner
CW I - 4 Fill 94.6 1.341 0.5 2?9 6 None
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