My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2005-10-24_REVISION - M1987028
DRMS
>
Day Forward
>
Revision
>
Minerals
>
M1987028
>
2005-10-24_REVISION - M1987028
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
6/15/2021 6:08:04 PM
Creation date
11/21/2007 6:11:37 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1987028
IBM Index Class Name
Revision
Doc Date
10/24/2005
Doc Name
Conv. Appl.
From
Colorado Marble L.L.C.
To
DMG
Type & Sequence
CN1
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.
/
79
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
reaches of the mine site to the lower staging azea where Taylor Gulch drops away from <br />the disturbed land of the mining area. The berm will be app. 4 feet high, 4-6 feet across <br />the flattened top, and side slopes of no greater than 2:1, H:V. The berm will be capped <br />with no less than 6 inches of topsoil and planted according to site seed mix and rate <br />established in the reclamation plan portion of this document. The berm will help to <br />insure separation of Taylor Gulch drainage from mine site drainage and will remain as a <br />permanent feature after final mine reclamation activities are completed. <br />Road ditches within the active mining azea will be constructed as needed to divert surface <br />flows from within the active mining azea, including ramps, roadways, and stockpile azeas <br />into the lower pit azea. These road temporary ditches will likely be constructed as "v" <br />shaped ditches along roadway shoulders and broad swaies across flatter stockpile azeas <br />just deep enough to insure proper drainage of the azea while allowing for equipment <br />crossing. <br />2005 Environmental Correction Work Plan <br />By the end of the 2005 field season, the isolation of Taylor Gulch drainage from the mine <br />site will have been completed. Mine operations during the past several yeazs had <br />intercepted drainage patterns from Taylor Gulch, resulting in sedimentation deposition in <br />Taylor Gulch from the lower staging azea road crossing of CR 288 approximately 500 <br />feet down gradient to the grated (Colorado Abandoned Mine Program) underground adit <br />located on the east side of Taylor Gulch just below the lower waste dump (see map Ca). <br />These carbonate sediments were excavated from the channel bottom and hauled back to <br />the mine site for grading of the lower staging floor azea. Excavation was performed <br />down to original soil layer exposure, although a minor amount of cazbonate fines remains <br />in the drainage. The azea will be seeded and mulched in late 2005 or eazly 2006 field <br />season. Taylor Gulch drainage was reinforced in two locations where mine operations <br />had intersected the drainage channel via excavation and rip-rap placement to facilitate un- <br />restricted flow of Taylor Gulch watershed. The trapezoid channel configuration and rip- <br />rap placement is shown on the attached drawing. The construction of a waste rock berm <br />directly east and parallel to Taylor Gulch will help to insure that future watershed flow <br />will move un-impeded in Taylor Gulch and will not mix with mine site drainage. <br />Drainage systems within the mining azea will all flow wwazds the lower pit azea, without <br />exception. Topsoil materials incurred during mining and development will be placed in <br />designated topsoil stockpile azeas as located on map Cc and seeded for stabilization until <br />food placement. A sediment fence was installed during the 2005 field season located <br />along the base of the lower waste rock dump. This sediment control structure failed <br />during a storm event in late September, 2005, due to improper grading of the lower <br />staging area directly above the waste rock dump. The sediment fence system and grading <br />deficiencies will be corrected before the end of the 2005 field season. <br />10 <br />
The URL can be used to link to this page
Your browser does not support the video tag.