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GENERAL43393
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GENERAL43393
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Last modified
8/24/2016 8:12:11 PM
Creation date
11/23/2007 12:22:07 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
General Documents
Doc Date
9/8/1983
Doc Name
PROPOSED DECISION AND FINDINGS OF COMPLIANCE
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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-13- <br />Quantity Effects: <br />The Somerset Mine may affect the quantity of water available to the North <br />Fork AVF through depletion of streamflow by underground workings and <br />percolation and evaporation losses from sediment ponds. <br />The interception of surface water or shallow ground water by underground <br />workings presents a potential impact to water availaoility to the North <br />Fork AVF through diversions of Hubbard Creek water. The Mine is <br />presently incurring water sources in the general vicinity of mining <br />activities beneath Hubbard Creek which may in part be tributary to <br />surface water. These inflows are very small in comparison with the <br />average flow of Hubbard Creek. Water rights for the inflows have been <br />obtained by U. S. Steel Company and this stream is not subject to frequent <br />calls. <br />The persistence of these inflows is not known at present since these <br />workings are relatively new. U.S. Steel has planned 'development only' <br />mining within 400 feet of the Hubbard Creek channel to minimize the <br />hazard of subsidence effects causing a serious depletion of Hubbard Creek <br />flows. Future monitoring will serve to quantify effects to Hubbard Creek <br />if any. At present, because of the established buffer zone no <br />significant additional impacts are predicted. <br />`The majority of water which becomes entrained in the sediment pond system <br />will be lost from surface runoff due to evaporation or percolation. If <br />one assumes that each pond will fill and that this entire volwne of water <br />will be lost to flows in the North Fork, the resulting depletion would be <br />a fraction of a percent of total flow. <br />Through a system of sediment control, subsidence control, and minimal <br />surface disturbance the Somerset Mine has been designed to prevent <br />material damage to water available to downstream users. <br />Based on the information provided by the applicant, the Division makes <br />the following findings: <br />I. Pursuant to Rule 2.06.8(5)(a)(i), the Uivision finds that the <br />proposed mining operations would not interrupt, discontinue, or <br />preclude farming on the North Fork alluvial valley floor (Rule <br />2.06.8(5)). The North Fork AVF is not within the permit area, <br />and will not be physically disturbed by the mining activities. <br />II. Pursuant :o Rule 2.U6.8(5)(a)(ii), the Uivision finds that the <br />proposed surf ace coal mining operations would not materially <br />damage the quantity and quality of water in surface and ground <br />water systems that supply those alluvial valley floors or <br />portions of alluvial valley floors.. <br />III. Pursuant to Rule 4.24.2(1), the Uivision finds that the proposed <br />surface coal mining operations has been designed to preserve the <br />essential hydrologic functions of the North Fork alluvial valley <br />f loot. <br />
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