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2018-04-05_REVISION - C1981020
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2018-04-05_REVISION - C1981020
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Entry Properties
Last modified
4/9/2018 12:07:44 PM
Creation date
4/9/2018 9:50:02 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981020
IBM Index Class Name
Revision
Doc Date
4/5/2018
Doc Name Note
Proposed Decision Findings & Cost Estimate
Doc Name
Proposed Decision and Findings of Compliance
From
DRMS
To
CAM Mining, LLC
Type & Sequence
RN7
Email Name
JHB
Media Type
D
Archive
No
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runs approximately 793 animal units. Based upon assumption that the 9.9 acres of juniper <br />woodland does not lie within the AVF, the applicant calculated that disturbance of this <br />area would result in a loss in production of 4.57 animal units. This amounts to a 0.6% <br />loss of production during mining. Data and calculations are contained in Volume VI, <br />page 4-8. <br />Therefore, pursuant to Rule 2.06.8(5)(1), the Division finds that the surface facilities <br />affect a small area of the alluvial valley floor which provides negligible support for <br />production of the farming unit. <br />With respect to Stove and Buniger Canyons, the unnamed tributary to East Salt Creek <br />and Big Salt Wash, there is no potential for the interruption, discontinuance, or <br />preclusion of farming on an alluvial valley floor. No underground development will <br />pass beneath an alluvial valley floor, nor will any surface disturbance occur in any of <br />these areas. <br />Therefore, pursuant to Rule 2.06.8(5)(1), the Division finds that the proposed surface <br />coal mining operations will not interrupt, discontinue or preclude farming on an alluvial <br />valley floor. <br />Alluvial Valley Floor Findings with Regard to Material Damage to Water Quality and <br />Quantity. <br />The Munger Mine previously had been planned for development into portions of four <br />drainage basins. The surface disturbance only occurred within Munger Canyon and East <br />Salt Creek. The greatest potential for diminution of water quality and quantity would be <br />attributable to the area of surface disturbance. <br />The surface disturbance in Munger Canyon was limited to construction of the mine <br />bench, the waste disposal pile, haul roads leading to the portal area, water monitoring <br />wells, and the transfer of an emergency drill hole and associated access road in Monger <br />Canyon from the McClane Canyon Mine. These disturbances affected 21.2 acres <br />With respect to surface water quality, a portion of the operation is required to be <br />contained within a sedimentation system. Runoff from the mine bench and the waste <br />rock pile was routed through a sediment pond. The sediment pond was reclaimed in <br />2014 after the Division found that the reclaimed area was not contributing additional <br />sediment into the drainage basin, TR25. <br />Of the 35 acres previously approved to be disturbed by the portion of the operation <br />situated in Munger Canyon, approximately 8.4 acres is required to be controlled by a <br />sedimentation pond or small area exemption sedimentation controls. The rest of the <br />disturbance will consist of the haul road. The amount of area essentially removed from <br />the drainage of Munger Canyon due to containment within the operation's sedimentation <br />system is approximately 8.4 acres. This accounts for less than two-tenths of a percent <br />of drainage area of Munger Canyon and less than two -hundredths of a percent of the <br />34 <br />
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