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Knight H sold
<br /> CONSULTING
<br /> Environmental Department, Meg Burt, Senior Manager October 8, 2018
<br /> Cripple Creek and Victor Gold Mining Co. (Newmont)
<br /> Table 2.9: Summary of Existing SWMP Evaluation Findings
<br /> Table 2.10: EMP Jurisdictional Dam Status
<br /> Table 3.1: Summary of Modified SWMP Evaluation Findings
<br /> Table 4.1: Modified EMP 22 Spillways 100-year/24-hour Storm Event Peak Flows
<br /> Table 4.2: Modified EMP 22 Spillways Inlet Weirs Detailed Hydraulic Sizing Calculation Results
<br /> Table 4.3: Modified EMP 22 Spillways Outlet Channels (Chutes) Detailed Hydraulic Sizing Calculation
<br /> Results
<br /> Figures
<br /> Figure 2.1: Existing SWMP General Arrangement and EMP Contributing Basin Delineation Map
<br /> Figure 2.2: Existing ECOSA Area Diversion Channels Contributing Basin Delineation Map
<br /> Figure 2.3: Existing EMP 8b Diversion Channel Contributing Basin Delineation Map
<br /> Figure 2.4: Existing SWMP General Arrangement Curve Number Delineation Map
<br /> Figure 2.5: Existing Diversion Channels and Spillways HEC-HMS Flow Routing Diagram
<br /> Figure 3.1: Modified SWMP General Arrangement and EMP Contributing Basin Delineation Map
<br /> Figure 3.2: Modified EMP 8a and 8b Diversion Channel Contributing Basin Delineation Map
<br /> Figure 4.1: Modified EMP 22 Spillways HEC-HMS Flow Routing Diagram
<br /> Drawings
<br /> Drawing 000: Cover Sheet
<br /> Drawing 002: General Location Map and Legend
<br /> Drawing 050: SWMP General Arrangement
<br /> Drawing 200: EMP-22 and 22b Upgrades Plan and Profile
<br /> Drawing 210: EMP-22 Spillway Plan and Profile
<br /> Drawing 215: EMP-22b Spillway Plan and Profile
<br /> Drawing 220: ECOSA Facility Toe Berm Design Upgrade
<br /> Attachments
<br /> Attachment 1: DRMS Comments Received July 26, 2018
<br /> Attachment 2: NOAA Atlas 14, Volume 8, Version 2 PFDS Output for Cripple Creek Station
<br /> Attachment 3: NRCS Web Soil Survey Output
<br /> References
<br /> AMEC, 2011, Squaw Gulch Valley Leach Facility Design, Appendix A, Field Investigation, September 1.
<br /> Chow, V.T., Ph.D., 1959, Open-Channel Hydraulics.
<br /> Colorado Office of the State Engineer (OSE), 2007, Rules and Regulations for Dam Safety and Dam
<br /> Construction, Department of Natural Resources, Division of Water Resources, Dam Safety Branch,
<br /> 2-CCR 402-1, January 1.
<br /> Cripple Creek and Victor Gold Mining Company (CC&V), 2017, Stormwater Management Plan, Newmont
<br /> North America, December 29.
<br /> National Oceanic and Atmospheric Administration (NOAA), 2013, NOAA Atlas 14 Precipitation-Frequency
<br /> Atlas of the United States, Volume 8 Version 2.0: Midwestern States (Colorado, Iowa, Kansas,
<br /> Michigan, Minnesota, Missouri, Nebraska, North Dakota, Oklahoma, South Dakota, Wisconsin),
<br /> Precipitation Frequency Data Server (PFDS), United States Department of Commerce, Cripple
<br /> Creek Climatological Station, Latitude: 38.7497°, Longitude: -105.17970, Access date March 5,
<br /> 2018.
<br /> Natural Resource Conservation Service (NRCS), 2004, National Engineering Handbook, Part 630
<br /> Hydrology, Chapter 9: Hydrologic Soil-Cover Complexes, Chapter 10: Estimation of Direct Runoff
<br /> from Storm Rainfall, United States Department of Agriculture(USDA), July.
<br /> Natural Resource Conservation Service (NRCS), 1986, TR-55 Urban Hydrology for Small Watersheds, U.S.
<br /> Department of Agriculture, Washington, D.C., June.
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