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2000-09-13_REVISION - M1977493 (3)
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2000-09-13_REVISION - M1977493 (3)
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Entry Properties
Last modified
6/16/2021 5:41:57 PM
Creation date
1/31/2013 6:59:56 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1977493
IBM Index Class Name
REVISION
Doc Date
9/13/2000
Doc Name
Surety Reduction Request
From
Climax
To
DMG
Type & Sequence
SR3
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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Petition for Partial Relec Financial Warranty <br /> Climax Molybdenum Company <br /> Permit #M-77 493 September 1, 1999 <br /> depth of 6". Realistically, the depth of capping material on certain areas must be significantly <br /> greater to support haul trucks and heavy equipment used to spread the rock. In addition, haul <br /> roads to No. 1 Dam and to No. 2 Dam needed to be constructed to access those areas of the <br /> impoundment dry enough to cap. <br /> Reclamation work on the Robinson tailings impoundment was initiated in 1989-1990 when rock <br /> from the west side of E-dump was used to construct a 4' thick haul road across the south arm of <br /> the impoundment to No. 1 Dam. In 1991, construction began on a second haul road from the <br /> south end of the impoundment at E-dump north along the east side to No. 2 Dam and beyond to <br /> the Ten Mile tailings impoundment and No. 3 Dam. This road was constructed using bench <br /> waste rock material from the open pit and was designed to be both a haul road for future area <br /> reclamation and a cofferdam for the McNulty pump station at the mouth of McNulty Gulch. <br /> This Robinson eastside haul road was completed in 1993. <br /> The capping project began in July 1994 and was completed 20 weeks later in November. <br /> Approximately 1.4 million cu. yds. of rock material was removed from the west side of E-dump <br /> (Section 3.2) and spread in a single 18" lift on dried areas of the impoundment, well within the <br /> amended (1989) permit requirement of 6" to 3'. Application of this cap material was observed <br /> by DMG during its site inspection on September 15, 1994, and noted to be in compliance. <br /> Presently, capping is completed on 361 acres, and the two haul roads account for an additional <br /> 87 acres. A total of 448 acres or 67 percent of the capping work on the Robinson impoundment <br /> covered by the present financial warranty is completed, including 100 percent of the construction <br /> of the haul road as discussed in Section 4.11, page 69 of the warranty document. The remaining <br /> 219 acres is the present pool area that will be drained, geogridded, and capped in the future. This <br /> present acreage is a 41 acre reduction from the 260 acres presently bonded for geogrid as noted <br /> in Section 3.11, page 52 of the warranty document. <br /> Figure 1 shows those areas on the Robinson tailings impoundment that have been completed as <br /> well as the area of the remaining 219 acres. Figures 21 through 24 are photographs of the area <br /> prior to, during, and following reclamation work. Figures 25 through 27 document the area and <br /> the haul roads as of July 1999. As discussed, the haul road task is 100 percent complete, the <br /> capping task is 67 percent complete, and the area requiring geogrid should be reduced 16 percent <br /> from 260 acres to 219 acres. Therefore, Climax seeks a reduction in warranty for these elements <br /> Of.' $1,734,094• Grading and capping of No. 2 Dam, and geogrid installation and capping of the <br /> remaining 219 acres remains to be done. Thus, the warranty for those areas remains unchanged. <br /> 3.6 Eagle Valley Borrow Areas <br /> The 1989 permit amendment delineated and discussed 23 ancillary or interim areas requiring <br /> reclamation under the permit. Eight of those areas, C7 through C 14, are located in the upper <br /> Eagle Valley and have been used primarily as small sites for extraction of borrow material. All <br /> of the sites in the upper Eagle Valley were disturbed prior to enactment of the Colorado Mined <br /> Land Reclamation Act of 1977. <br /> 100419/Climax/Report.doc 9 <br />
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