My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
INSPEC05780
DRMS
>
Back File Migration
>
Inspection
>
INSPEC05780
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 9:01:27 PM
Creation date
11/18/2007 8:23:32 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1978116
IBM Index Class Name
Inspection
Doc Date
6/20/2005
Doc Name
inspection report
From
cotter
To
dmg
Inspection Date
5/4/2005
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.
/
6
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
5) The plan in the permit amendment application stated that soil or other material <br />suitable for coverage during reclamation would be stripped from the area prior to <br />waste rock placement. It was not intended that the entire area would necessarily <br />be stripped before any waste rock was placed, rather, that where waste was being <br />placed, the soil would be removed prior. This was done. There may be a place or <br />two where there has been some waste excursion outside the stripped area, but <br />such a case is very minor. <br />6) The soil/cover material has been removed from the remainder of the area where <br />waste rock will be piled. This cover material is now piled in the north end of the <br />permitted area. See Photo 5. <br />7) Stripping of the surface area for the waste rock pile began in February, 2005. The <br />soil was wet due to snowmelt. That is the reason only a portion of the area was <br />stripped, as mentioned above in item 5. Cotter disagrees with DMG that stripping <br />material while it is wet constitutes anon-compliance issue. <br />8) The catchment structures were not as lazge as the design fora 10 year-24 hour <br />event (as calculated in Appendix B of the amendment application) on the date of <br />the DMG second inspection, May 4, 2005. This is due to the fact that the entire <br />area expected to be used for waste rock disposal was not yet cleazed (i.e. still <br />under construction as explained in items 5, 6, and 7 above). However, they were <br />adequate for the size of area that had been stripped, as noted in the DMG <br />inspection report of March 24, 2005, page 2, OBSERVATIONS, which states, <br />"Due to weather it was easy to observe stormwater movement. No erosion or <br />sedimentation issues were noted. Stormwater is being channeled to prevent off <br />site impacts." The catchment at the south end of the waste/ore stockpile area <br />was excavated in red mudstone, not topsoil, until it encountered hard sandstone <br />bedrock, limiting its final depth. The shape of the stockpile area, as it is now <br />being built, will have a drainage divide that will cause about 213 of the runoff to <br />flow to the northern catchment and approximatelyl/3 to the southern catchment, <br />not''/Z each way as was anticipated in the calculations of Appendix B. The <br />southern catchment has been enlazged to be sufficient to hold at least I/3 of the <br />10-year event runoff. It is shown in Photo 6. The northern catchment structure <br />has also been enlarged sufficient to hold at least 2/3 of the calculated runoff. This <br />is shown in Photo 7. <br />9) The safety berms azound the pad area, on the haulage ramp to the county road, <br />and on the ramp to the portal elevation are mostly made of waste rock. Almost all <br />runoff from this area will be contained in the catchment that was built north of the <br />office trailer (below the outcrop behind the inspector in DMG Photo #30) or will <br />run down the ramp into the portal. Portions of the berms where runoff may <br />bypass the catchment (such as the north end of the haulage ramp at the county <br />road elevation) have been covered with native material, excavated from the <br />stockpile area's southern catchment, to prevent off site impacts. <br />10) Dips will be maintained at both driveways on the east side of the county road in <br />order to channel runoff into the catchments. Such a dip did not exist near the <br />southern catchment at the time of the inspection, but it has been re-established. <br />See Photo 6. No runoff has ever bypassed the northern catchment. <br />
The URL can be used to link to this page
Your browser does not support the video tag.