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2014-08-13_GENERAL DOCUMENTS - C1981018
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2014-08-13_GENERAL DOCUMENTS - C1981018
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Last modified
8/24/2016 5:46:41 PM
Creation date
8/14/2014 7:47:43 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981018
IBM Index Class Name
General Documents
Doc Date
8/13/2014
Doc Name
Proposed Decision & Findings (RN6)
From
DRMS
To
Blue Mountain Energy, Inc
Permit Index Doc Type
Findings
Email Name
ZTT
DIH
Media Type
D
Archive
No
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exempted are listed in Section IV.J.5 of the application. Sedimentation <br />demonstrations for the SAE's are provided in Illustration 44, of Volume 12, and <br />the locations are shown on Map 147 (4.05.2(3)(b)(i)). <br />B. Diversions and Conveyance of Overland Flow <br />The Division approved the diversion of an ephemeral stream draining at least one <br />square mile. Scullion Gulch has been diverted with a large diameter pipe culvert <br />such that it passes beneath the D Portal facilities area. The decision to approve <br />this diversion is based on a finding that the diversion meets the requirements of <br />4.05.18 and 4.05.4, applicable local, State, and Federal statutes and regulations <br />and is designed to safeguard public safety and to minimize adverse impacts to the <br />hydrologic balance (4.05.4(1) and (4)). <br />C. Sedimentation Ponds <br />Sediment ponds are discussed under Section IV.J. l Volume IV of the permit <br />application. <br />The applicant uses sedimentation ponds in all disturbed drainages to control the <br />increased sediment loads within the ephemeral drainages on the mine site. All <br />sediment ponds are designed to contain or treat the 10 -year, 24 -hour even and <br />safely pass the 25 -year, 24 -hour event, at a minimum. <br />An alluvial well field near the confluence of Scullion Gulch and the White River <br />was originally developed to supply water for mine operations. The 1984 <br />completion of Kenney Reservoir east of Rangely, Colorado inundated much of the <br />alluvial well field. Because the alluvial surface is almost completely submerged <br />by the reservoir, recharge to the alluvium is now instantaneous. Due to inundation <br />of the well field by the reservoir, and due to high salinity of the alluvial well <br />water, the operator pumps water directly from the White River into an adjacent <br />lagoon formed by the Kenney Reservoir. Approval to pump directly from the raw <br />water lagoon to the raw water system was affirmed in Permit Renewal No. 2 in <br />1994. Only one alluvial well, Qal -5, located at the mouth of Scullion Gulch, <br />Remains in use as monitoring well. <br />The raw water lagoon is a simi -in situ impoundment that collects water from the <br />White River. The Division approved (MR -55) the construction of a dike that <br />separates Scullion Gulch drainage from the lagoon area. The location of the dike <br />and its access road are shown on Map 90 of the PAP. <br />D. Surface and Ground Water Monitoring <br />1. The applicant will conduct monitoring of ground water in a manner approved by <br />the Division. The ground water monitoring plan can be found in Section II.C.3.h, <br />Vol. I of the permit application (4.05.12(1)). <br />27 <br />
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