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Newmont Goldcor T,-'T` <br /> VLF/OSA Closure Stormwater Analysis ■ <br /> NewFields Project No.475.0106.035 <br /> November 8,2019 <br /> Table 2: Summary of Intermediate Bench Chanel Dimensions <br /> Peak Bench Channel Bottom Channel <br /> Closure Surface Channel Flow Width Depth <br /> (cfs) (ft) (ft) <br /> ECOSA 126 5 3 <br /> SGOSA 98 5 4 <br /> Schist Island 97 5 4 <br /> VLF2 99 3 4 <br /> VLF1 128 5 4 <br /> 4. CLOSURE COST ESTIMATES <br /> NewFields developed a capital cost estimate estimates in support of this stormwater analysis. A <br /> summary table of the capital cost estimate has been included below: <br /> Table 3: Cost Estimate Summary <br /> Owner Constructed <br /> Diversion Channels&Stilling Basins $ 16,274,652 <br /> The detailed cost estimate and basis of estimate can be found in Appendix D. <br /> S. REFERENCES <br /> Steffens and Associates, Inc. (2014). Design Report for Storm Water Management at the Chicago <br /> Tunnel Site. Golden, CO. <br /> Newmont (2015) Cresson Project, Permit M-1980-244 Amendment 11 Application <br /> Newmont (2017) Permit No. M-1980-244: Cripple Creek & Victor Gold Mining: Cresson Project, <br /> Amendment 11 Conditional Approval Item — TR94 — Arequa Gulch Valley Leach Facility <br /> Reclamation Plan <br /> Page 8 <br />