My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2025-05-02_REVISION - C1981010 (2)
DRMS
>
Day Forward
>
Revision
>
Coal
>
C1981010
>
2025-05-02_REVISION - C1981010 (2)
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
5/6/2025 11:15:36 AM
Creation date
5/6/2025 10:46:18 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
Revision
Doc Date
5/2/2025
Doc Name
Proposed Decision and Findings of Compliance
From
DRMS
To
Trapper Mining, Inc.
Type & Sequence
PR12
Email Name
RAR
JLE
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.
/
22
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
sediment control facilities(4. 03.1 (2)(c)). <br /> B. Access Roads <br /> Access roads, discussed in permit Section 3.7.3,Vol III,meet requirements of Rule <br /> 4.03.2(2)(c). <br /> II. Support Facilities - Rule 4.04 <br /> Support facilities discussed in permit Section 3.8, Vol. III, meet requirements of Rule <br /> 4.04(6). <br /> III. Hydrologic Balance - Rule 4.05 <br /> Volume 4 of the Trapper Mine permit application includes an assessment of the probable <br /> hydrologic consequences of the proposed mining operation. Each year, Trapper assesses <br /> the ongoing impacts to the hydrologic system in its annual hydrologic report submitted as <br /> Appendix W of the permit application. The probable hydrologic consequences as set forth <br /> in Volume 4 and Appendix W are summarized below. <br /> A. Water Quality Standards and Effluent Limitations <br /> Surface discharge at the Trapper Mine is monitored under CDPS permit#CO-0032115 <br /> issued by the Colorado Department of Public Health and Environment. In addition, <br /> the applicant has quarterly and monthly reporting requirements as part of its surface <br /> water monitoring program. WET testing through bio-monitoring sampling is required <br /> in the following drainages if mine-contaminated water is discharged. <br /> 1. East Flume System 2. Middle Pyeatt System <br /> B. Stream Channel Diversions <br /> Drainage way reconstruction is discussed under Section 4.8. 1.3,Vol. IV of the permit <br /> application. Channel lining structures,retention basins, and artificial channel <br /> roughness structures are proposed for use to control erosion. The applicant uses rock <br /> check structures,various geotextiles, and rapid growing vegetation within <br /> reconstructed drainages to control erosion. (4.05.4(2)(a)). <br /> C. Sedimentation Ponds <br /> Sediment ponds are discussed under Section 4.8.1.4,Vol. IV of the permit application. <br /> The applicant uses sedimentation ponds in all disturbed drainages to control increased <br /> sediment loads resulting from disturbance within the ephemeral drainages on the mine <br /> site. All sediment ponds are designed to contain or treat, at a minimum,the 10-year, <br /> 24-hour event and to safely pass the 25-year, 24-hour event. One MSHA size pond <br /> exists on the site in the Coyote drainage. <br /> D. Surface and Ground Water Monitoring <br /> 1. The applicant will conduct monitoring of ground water in a manner approved by <br /> the Division. The ground water monitoring plan can be found in Section 4.8.5.2a, <br /> Vol. IV of the permit application (4.05.13(1)). Baseline groundwater quality <br /> 13 <br />
The URL can be used to link to this page
Your browser does not support the video tag.