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GENERAL30918
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Last modified
8/24/2016 7:48:20 PM
Creation date
11/23/2007 6:49:57 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981033
IBM Index Class Name
General Documents
Doc Date
11/14/2003
Doc Name
Proposed Decision & Findings of Compliance For RN4
Permit Index Doc Type
Findings
Media Type
D
Archive
No
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2. Pursuant to Rule 2.06.8(5)(a)(I)(A)(II), the Division finds that the proposed surface <br />coal mining operations would not materially damage the quantity and quality of <br />water in surface and groundwater systems that supply this water to alluvial valley <br />floor. <br />The Division finds that surface coal mining and reclamation operations will be <br />conducted to preserve, throughout the mining reclamation process, the essential <br />hydrologic functions of the alluvial valley floor pursuant to Rule 2.06.8(5)(a)(iii). <br />No change in the quantity of water available to alluvial deposits adjacent to the North <br />Fork of the Gunnison River is expected to result from mining activities by Beaz Coal <br />Company. No diminution in surface water runoff from the permit area is expected to <br />occur; therefore, no decrease in the flow of the North Fork of the Gunnison is <br />expected. The undisturbed land overlying the Beaz mine workings should not be <br />significantly impacted by mining; therefore, no impacts to the surface water system aze <br />anticipated. Surface runoff from the eight-acre disturbed azea of the Bear No. 3 Mine <br />was expected to increase during active mining due to the low infiltration capacity of <br />the roads and pazking areas at the mine. The increase in surface runoff from this small <br />area is insignificant when compared to the much larger flow in the North Fork of the <br />Gunnison River. <br />No significant changes to water quality are expected to occur as a result of mining at <br />the Beaz No. 3 Mine. The water quality of surface runoff from the undisturbed permit <br />azea will not be affected by mining. No subsidence problems are anticipated which <br />could increase landslide frequency in the permit azea, and increase the aznounts of <br />dissolved and suspended solids in adjacent streams. Water quality of surface runoff <br />from the disturbed area is controlled by NPDES dischazge limitations. Infrequent <br />dischazges from the Bear sediment ponds must meet receiving stream standazds and, <br />therefore, not degrade surface water resources. <br />In June, 1995, personnel at the Beaz Coal Company discovered inflow to the 3rd West <br />Section of the Bear No. 3 Mine. The inflow was measured at approximately 18 gpm. <br />During 1996, water reportedly continued to flow from the 3rd West seals and also <br />began flowing from the bleeder seals in the 2nd west Section. In November, 1996, <br />Beaz Coal Company permanently ceased all mining operations at the Beaz No. 3 Mine <br />and sealed the three existing portals. Since that time, no additional information has <br />been obtained concerning the source or rate of mine inflow to the Bear No. 3 Mine. <br />There has been no recorded dischazge from the Bear No. 3 Mine. <br />Groundwater quantity and quality in the alluvial material underlying the Bear No. 3 <br />facilities are closely related to water quality and flow of the adjacent North Fork of the <br />Gunnison River. Groundwater flow in the alluvial material is controlled by the water <br />level and gradient of the North Fork of the Gunnison River. Water levels in the <br />alluvial material aze generally 5.0 to 8.0 feet below the land surface. <br />31 <br />
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