My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
REP49509
DRMS
>
Back File Migration
>
Report
>
REP49509
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/25/2016 12:53:28 AM
Creation date
11/27/2007 12:36:19 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1977493
IBM Index Class Name
Report
Doc Date
3/1/2007
Doc Name
Revegetation Project Summary 2006
From
Climax
To
DRMS
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.
/
9
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
2006 Reclamation Project Summary <br />2006 Revegetation Project Summary <br />Robinson Tailings Pond and McNulty Gulch Reclamation <br />Climax Mine reclaimed 144.1 acres on Robinson Tailings Pond and the adjacent <br />McNulty Gulch during the 2006 season (Table 1 and Figure 1). The majority of these areas were <br />capped prior to 2006 with waste rock (or acid cover), cirque material from above the pit, E- <br />Dump, brown and dark grey waste rock materials from the pit, and Maroon formation materials <br />from the east side channel excavation. Additional Maroon formation materials were excavated <br />and placed in 2006 during the new pump statioa construction near 10-mile Tailings Pond. Aa <br />additiona18.75 acres were also capped with this Maroon formation mineral soil, and will be <br />reclaimed in 2007. <br />All cap materials were chemically analyzed for pH, fertility, and lime requirements to <br />determine amendments for successfui reclamation. Liming rates were determined by historical <br />and current chemical analysis of the cap materials using Sobek's EPA acid base accounting <br />methodology. Results from the historic analyses of the original waste rock cover and E-Dump <br />materials determined that amendment with 24 tons of agricultural time and 6 tons of quick lime <br />was required on a per acre basis. The cirque material required amendment with 10 tons of <br />agricultural lime and the Maroon, brown and grey materials required no lime amendments. <br />Fertility analysis results detem~ined that 100 pounds per acre of 11-52-0 was required. Both lime <br />and fertilizer were applied prior to seedbed preparation which inmost cases included two-pass <br />ripping to a depth of 6 inches at a 45 degree angle. Organic amendments and seedbed preparation <br />differed in areas with topsoil. The Climax seed mix was broadcast seeded onto the prepared <br />seedbed at 25 bulk pounds per acre in most areas. <br />Robinson Wetland <br />In the center of the Robinson Tailings Pond area, a small pond still stands that will not be <br />completely drained. The regularly wet area extending to the south from this pond was reclaimed <br />as a wetland (Robinson Wetland). The 11.3 acre wetland area was limed as appropriate, <br />aerospread with 45 yards/acre of Class A biosolids, and broadcast seeded with a native wetland <br />species mix developed For Climax Mine at a rate of 25 pure live seeds (PLS) per acre (Table 2). <br />Because most of the wetland area was saturated all season, only a harrow could be used for <br />seedbed preparation. Willow stakes were also used for reclamation in the Robinson Wetland area <br />at the edges of standing water. A total of 485 willow stakes were placed over 038 acres to aid in <br />establishment of wetland shrub species. <br />Along the east bank of the still standing Robinson Tailings pond, a 0.45 acre area was <br />covered with topsoil, root wads, and cut willow pieces removed during the new pump station <br />construction near 10-mile Tailings Pond. This soil was spread along the high water shoreline at a <br />rate of approximated 500 yards per acre over saturated tailings. Given sufficient growing season <br />water the willow pieces should begin to sprout and grow in spring of 2007. <br />2/26/07 <br />
The URL can be used to link to this page
Your browser does not support the video tag.