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357' <br /> jv t "I .-tesol Table 2.9 <br /> Cripple Creek and Victor Gold Mining Co.(Newmont) <br /> C A N S 11 1. T I N G Cripple Creek and Victor Mine <br /> Stormwater Management Plan Evaluation <br /> Summary of Existing SWMP Evaluation Findings <br /> Impoundment Spillway Inflow Diversion Channel <br /> Required Weir Required Chute As-built <br /> Required Volume: As-built Weir As-built Chute As-built Riprap Required Riprap Required Peak As-built Riprap Required Riprap <br /> EMP As-built Volume Upgrades Spillway Peak Flow: Peak Flow: Upgrades Channel Flow Upgrades <br /> s 2x 10yr/24hr Runoff Flow Capacity Flow Capacity Stability Stability Flow: 100yr/24hr Stability Stability <br /> (ft ) s required? exists? 100yr/24hr 100yr/24hr required? Exists? Capacity required? <br /> (ft ) (cfs) (cfs) (cfs) (cfs) Factor of Safety Factor of Safety (cfs) (cfs) Factor of Safety Factor of Safety <br /> 6 r759 Yes 170 39 0 39 NA 2 Chute No NA NA NA NA NA <br /> 8a 0 No NA 170 NA 170 NA 1.2 Weir and chute No NA NA NA NA NA <br /> 8b 560.736 501.995 No Yes 34 124 90 124 1.3 1.2 Weir and chute 300 131 <br /> 8c 163,690 1,435,459 Yes Yes 42 287 153 287 1.4 1.2 Weir and chute No NA NA NA NA NA <br /> 9a-d combined 270,351 602,269 Yes Yes 9a only) 0 33-41 NA 33-41 NA 1.2 Weir and chute No NA NA NA NA NA <br /> 11 286,146 429,933 Yes No NA NA NA NA NA 1.2 Weir and chute No NA NA NA NA NA <br /> 13 74,817 478,383 Yes No NA 100 NA 100 NA 1.2 Weir and chute eNP i 250 57 es <br /> 16 167,265 21,930 No Yes 25 4 111 36 None 1.2 Chute Yes 0 10 2.7 1.2 Yes <br /> 17a-Yes 34 30 50 30 1.9 1.2 Chute Yes ill 36 None 1.2 Yes <br /> 17, 17a, 17b 0 NA 1.2 <br /> (combined) 526,446 193,518 No 17b-Yes 30 10 65 10 4.6 1.2 Chute Yes 39 9 4.1 1.2 No <br /> 17-No NA 28 NA 28 NA 1.2 Weir and chute No NA NA NA NA NA <br /> 18 199,631 157,385 No No NA 39 NA 39 NA 1.2 Weir and chute Yes-North 103 8 None 1.2 Yes <br /> Yes-West 0 23 NA 1.2 Yes <br /> 20 320,145 67,494 No Yes 2 15 12 15 1.0 1.2 Weir and chute Yes-North 31 7 None 1.2 Yes <br /> 21 89,235 66,551 No Yes NA 9 NA 9 NA 1.2 Weir and chute I No NA NA NA NA NA <br /> 22 1 4,698 37,313 Yes Yes 0 1 11 NA 11 NA 1.2 Weir and chute No NA NA NA NA NA <br /> ECOSA toe bermf3) 20.100 17,920(3) No(3' No NA NA NA NA NA NA No(3) No NA NA NA NA NA <br /> Notes: <br /> 1. Red shading denotes structures that require upgrades. <br /> 2. Green shading denotes structures that do not require upgrades. <br /> 3. ECOSA toe berm:Not classified as an EMP.The as-built volume is sufficient to store the runoff volume from a single 10-year/24-hour storm event,as shown in the'Required Volume'column for this structure. Upgrades(including spillway)and further analyses not required. <br />