My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
1997-04-18_ENFORCEMENT - M1977378
DRMS
>
Day Forward
>
Enforcement
>
Minerals
>
M1977378
>
1997-04-18_ENFORCEMENT - M1977378
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
2/25/2021 6:32:24 PM
Creation date
7/3/2012 7:19:23 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1977378
IBM Index Class Name
ENFORCEMENT
Doc Date
4/18/1997
Doc Name
Notice of Legal Right to Enter.
From
Sunnyside Gold Corp
To
CDPHE-WQCD
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.
/
20
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
4. Work Plan <br /> Remedial Goals and Objectives <br /> Cleanup of historic tailings, removal from contact with flowing water, severing existing <br /> direct connections to the river in order to reduce the impacts to the Animas River from dissolved <br /> metals. <br /> Site Loading Estimate <br /> For all of the remediation projects, and based on limited information, the site loading <br /> estimate for each project site was based on the following methodology <br /> Adits- <br /> Using available data, zinc loading was calculated based on the average <br /> flow and average zinc values. <br /> Mine Waste Dumps and Tailings Piles- <br /> Site composite soil samples were tested using a water bath extraction. <br /> This test consists of exposing a 1:1 ratio by weight of material to <br /> deionized water. The mixture is briefly mixed then allowed to set for 30 <br /> minutes. The sample was then filtered ( 0.45 micron) and analyzed for <br /> metals. Annualized loading was calculated using rainfall data <br /> (proportionally adjusted for site elevation between the Silverton and Red <br /> Mountain weather stations), exposed area of waste dump or tailings site <br /> and loading based on 1:1 water bath test results. For comparison to adit <br /> flow loadings projects, the annualized loading was converted to an average <br /> daily loading. <br /> Based on these assumptions and procedures, Sunnyside estimates that the average daily <br /> loading for this site may be as much as 43.0 pounds of dissolved zinc per day. Sunnyside is <br /> under no obligation to defend these estimates and they should only be used as an estimate. <br /> Sunnyside does not represent that its mitigation project at this site will remove any specific <br /> percentage of metals loading from this site: the loading estimate contained herein does not form <br /> the basis of an enforceable permit obligation. <br /> Description of Project <br /> Sunnyside will provide sediment catchments below the tailings to minimize sediment <br /> transport to the river during excavation. The tailings would be removed from contact with <br /> 46094_2,9//2,V6 B-7 <br /> "1� <br />
The URL can be used to link to this page
Your browser does not support the video tag.