My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2000-07-14_HYDROLOGY - M1977378
DRMS
>
Day Forward
>
Hydrology
>
Minerals
>
M1977378
>
2000-07-14_HYDROLOGY - M1977378
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
3/30/2021 6:20:46 AM
Creation date
5/31/2012 8:52:43 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1977378
IBM Index Class Name
HYDROLOGY
Doc Date
7/14/2000
Doc Name
Seepage Control Plan for Tailings Pond No. 4
From
Standards Metal Corp
To
CDPHE-WQCD
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
15
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
Mr. Don Simpson, Permits and Enforcement <br />Tailings Pond No. 4 Seepage Control Plans <br />Page 2 <br />Seepage control activities described at items 2 and 3 have been implemented <br />during the past six months and have been successful in reducing the amount <br />of seepage occurring at the tailings embankment toe. Specifically, seepage <br />flows occurring at the toe averaged 100 gpm in July 1982, and during the <br />same period in 1983, seepage flows have been reduced to 10 to 20 gpm (see <br />figure 1). Though seepage volumes at the embankment toe have been signif- <br />icantly reduced by implementation of proposed seepage control procedures, some <br />visible seepage is still occurring and installation of a drain and sump system <br />to collect and return seepage waters is now being investigated. Final de- <br />termination on the design and installation specifics for the seepage collec- <br />tion system as discussed is not possible at this time because modification of <br />the mill grind circuit to enhance recovery of targeted minerals is currently <br />being evaluated. Grind circuit modification may result in alteration of mill <br />tailings depositional methods which will ultimately impact seepage pathways <br />occurring in the present tailings embankment. In response to the possibility <br />of mill grind circuit modifications, determination on final seepage control <br />plans for Tailings Pond No. 4 will not be made until October 1, at which time <br />modified tailings embankment design criteria, if required, are completed. <br />If you have any questions or comments on the enclosed information, please <br />contact me. <br />WD : m b <br />Very truly yours, <br />STANDARD METALS C <br />William Dotterrer <br />Environmental Engineer <br />
The URL can be used to link to this page
Your browser does not support the video tag.