My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2022-05-27_PERMIT FILE - M2022025 (7)
DRMS
>
Day Forward
>
Permit File
>
Minerals
>
M2022025
>
2022-05-27_PERMIT FILE - M2022025 (7)
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
12/20/2024 7:18:31 AM
Creation date
5/31/2022 12:13:54 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2022025
IBM Index Class Name
Permit File
Doc Date
5/27/2022
Doc Name Note
Exhibit G - Water Information
Doc Name
Application
From
BDF, LLC
To
DRMS
Email Name
DMC
AWA
THM
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
4
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
A CDPHE discharge permit is in place for the operation. <br /> 1 .1 . Sump Capacity <br /> The runoff from a 100 year 24-hour storm event is calculated in Table G-1. It is not anticipated <br /> that any stormwater will escape the site as the pit has more than enough capacity to contain the <br /> entire storm event. <br /> Table G-1 —Runoff Calculations <br /> Base Products 2 <br /> Exhibit G Mining Conditions <br /> Hydrograph Type = SCS Peak Discharge (cfs) = 67.50 <br /> Storm Frequency(yrs) = 100 Time Interval (min) = 9 <br /> Drainage Area(ac) = 80.44 Curve Number(CN) = 85 <br /> Basin Slope(%) = 3.29% Hydraulic Length (ft) = 2858.3 <br /> Tc method = TR55 Time of conc.(min) = 16.30 <br /> Total Precip. (in) = 7.95 Storm Distribution = Type II <br /> Storm Duration (hrs) = 24.0 IShape Factor = 484 <br /> Hydrograph Volume=1,687,654(cuft)=38.74(acft) <br /> The area of the pit that drains to the west sump is 52.0 acres. With a two-foot stormwater berm, <br /> there is a minimum of 103.9 acre-ft of storage. This more than sufficient to contain the entire <br /> 38.7 acre-ft of runoff that drains to this area. <br /> Base Products Gravel Pit 2 <br /> April 2022 G-2 Lewicki&Associates <br />
The URL can be used to link to this page
Your browser does not support the video tag.