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2015-02-06_GENERAL DOCUMENTS - C1981020
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2015-02-06_GENERAL DOCUMENTS - C1981020
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Last modified
8/24/2016 5:57:17 PM
Creation date
2/9/2015 8:12:31 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981020
IBM Index Class Name
General Documents
Doc Date
2/6/2015
Doc Name
Proposed Decision & Findings (SL-2)
From
DRMS
To
CAM Mining, LLC
Permit Index Doc Type
Findings
Email Name
ZTT
MPB
Media Type
D
Archive
No
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Associates, Inc. (Cedar Creek), on behalf of the permitee, in 2013 to provide cover comparison <br />values of evaluation for success of the reclaimed area. The vegetation evaluation report can be <br />found in the PAP as Table 4.8 -34. Cedar Creek's vegetation evaluation report concluded that the <br />Phase H bond release area at the Munger Mine site is significantly greater than the success <br />criteria, passes the Division's ground cover requirement and appears more than capable of <br />supporting post- mining land use for Phase II bond release. After review and on- the - ground <br />inspection by the Division's vegetation specialist, Janet Binns, it was agreed that Cedar Creek's <br />conclusion is accurate and vegetation at the Munger Canyon Mine passes the revegetation cover <br />requirement for Phase H bond release. Vegetation cover at Munger Canyon Mine is shown in <br />Photograph No. 1 and Photographs No. 6 through No. 10. <br />Vegetation establishment at the Loma loadout is not required to be compared to a reference <br />area. The Loma loadout property is owned by Union Pacific Railroad (Figure 1.1 -3A) and is <br />approved for industrial post- mining land use. The loadout site was initially seeded in 2001 <br />but due to poor initial stand establishment, the site was reseeded in November 2004 using a <br />salt tolerant mix. With the SL -2 application, CAM submitted an individual revegetation <br />evaluation report for the Loma loadout which was conducted during June of 2013. The <br />evaluation report was conducted by Cedar Creek on behalf of CAM. Review of the evaluation <br />report confirmed the sampling protocol for revegetation evaluations followed the Division's <br />approved procedures. Results of the sampling consisted of 35.4% live vegetation, 43.4% litter, <br />18.5% bare soil and 2.7% rock. Majority of vegetation was identified to be forage kochia, <br />fourwing saltbush and greasewood with approximate coverage of 17.2 %, 11.6% and 3.6% <br />respectively. During the Division's inspection, Janet Binns of DRMS, identified the majority of <br />the vegetation at the Loma loadout which concurred with Cedar Creeks report. Cedar Creek's <br />evaluation concluded that given the soils found in the area and the proximity to multiple <br />disturbance corridors, the loadout facility exhibits a stable vegetation community that appears <br />capable of supporting the industrial post mining land use. After review and on- the - ground <br />inspection by the Division, it was agreed that Cedar Creek's conclusion is accurate and <br />vegetation at the Loma loadout passes the requirements for Phase II bond release. <br />In the month of September 2014, the Munger Canyon Mine site experienced a 50 -year <br />precipitation event. Considerable runoff flows came down the Monger Canyon, Munger <br />Canyon and side walls of the canyons. From the precipitation event, sediment deposition and <br />scour was observed in limited sections of the light use access road. The OSM representative <br />expressed his opinion that this is a natural event and was unavoidable. The damage to the <br />reclaimed light use road was minimal and consistent with damage in the undisturbed <br />landscape. Since this is a Phase II bond release and not a termination of jurisdiction, the <br />Division and OSM considered that this event does not constitute a failure to establish <br />vegetation. Natural sediment deposition on light use access road is shown in Photograph No. <br />11. <br />During the bond release inspection conducted on November 25, 2014, it was observed that <br />additional disturbance occurred at the northwest end of the waste pile during the removal of a <br />culvert. The area disturbed on the waste pile is being requested for Phase H bond release as part <br />of the SL -2 application. The disturbance area was measured by the Division with GPS and <br />totaled to 0.09 acres. The disturbed area has been regarded and reseeded but no longer meets the <br />
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