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2019-09-13_PERMIT FILE - M2018051 (11)
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2019-09-13_PERMIT FILE - M2018051 (11)
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Last modified
12/27/2024 1:00:47 PM
Creation date
9/13/2019 11:54:03 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2018051
IBM Index Class Name
Permit File
Doc Date
9/13/2019
Doc Name Note
Attachment 3 - Exhibit D
Doc Name
Adequacy Review Response
From
Black Mountain Sand Weld LLC
To
DRMS
Email Name
PSH
MAC
Media Type
D
Archive
No
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Table D2: Stormwater Pond Sizing Calculations <br /> Stormwater Pond Name Area of Runoff Pond Volume Depth Freeboard <br /> (Acres) (Acre-ft) (ft) (ft) <br /> Temporary Sediment Basin for Facility Construction 109.39 4.85 8 3 <br /> Settling Pond at Fueling Station 3.42 0.15 5 5 <br /> Settling Pond at Operations,Years 1-3 87.89 3.90 8 5 <br /> Settling Pond at Operations,Years 4-6 1 70.15 3.11 8 1 5 <br /> Settling Pond at Operations,Years 7-11 1 112.04 4.97 8 1 5 <br /> All stormwater ponds will be built and maintained to meet Colorado Department of Public Health and <br /> Environment's (CDPHE) regulations. Black Mountain will obtain a General Permit for Stormwater Discharges <br /> Associated with Sand and Gravel Mining and Processing, as needed, prior to any discharges. <br /> 4 <br />
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