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GENERAL55593
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Last modified
8/24/2016 8:40:35 PM
Creation date
11/23/2007 10:36:50 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980004
IBM Index Class Name
General Documents
Doc Date
12/31/1996
Doc Name
PROPOSED DECISION & FINDINGS OF COMPLIANCE FOR RN4
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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Issues were raised during the renewal review regarding landowner request for retention <br />of lower segments of the access/haul road, clarification of topsoil salvage for the <br />McGlone to Munger haul road, and provision of operational and reclamation cross <br />sections for the McClane to Munger haul road. These issues were adequately resolved. <br />The operator has committed to reclaim all roads to approximate original contour (AOC), <br />with no road segments to be retained for the post mining land use. <br />The current haul road certification in Appendix O of the PAP is dated June 7, 1988. <br />Since that time, a number of haul road rules have been revised. New Rule <br />4.03.1(1)(d)(ii), which became effective in the past year, allows for a relevant showing <br />of compliance with performance standards in lieu of certification. Because the haul road <br />certification may be outdated, given subsequent rule changes, the following stipulation <br />is necessary. <br />STIPULATION NO. 23 <br />WITHIN 30 DAYS OF PERMIT ISSUANCE, THE OPERATOR WILL SUBMIT <br />A RELEVANT SHOWING STATEMENT IN LIEU OF CERTIFICATION FOR <br />THE MCCLANE ACCESS/HAUL ROAD, PURSUANT TO RULE <br />4.03.1(1)(d)(ii). <br />The Division proposes to approve the following specific variances. <br />A. Haul Roads <br />1. The Division proposes to approve cut slopes steeper than 1v:0.25h in rock. Figure <br />2.2-5 of the application indicates a section of the road which had to be cut into the <br />canyon wall where the cut slopes are approximately 1v:0.13 horizontal (cross <br />section C-C'). A safety hazard posed by the steep upper portion of the cliff in this <br />location was mitigated by the operator by grading the crest of the slope to a lesser <br />grade, m the spring of 1988. <br />Possible slides from this cut slope do not present a potential for serious <br />environmental harm. Any small debris from the cut slope or cliff above are <br />contained by the roadside ditch system which is regularly maintained and duects <br />drainage to the sedimentation pond. [n the event of a slope failure at this location, <br />slide material would likely block the drainage ditch and accumulate on the road. <br />Any such blockage of the drainage system would be temporary and would not <br />result in significant environmental damage. Neither the road cut slope nor the <br />upper cliff slope above the cut have demonstrated instability since the crest slope <br />reduction was performed. For these reasons, the Division finds that the cut slope <br />steeper than 1v:0.25 in rock will not result in significant environmental harm or <br />harm to the public health and safety (4.03.1(3)(d)(i)). <br />13 <br />
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