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2010-06-04_PERMIT FILE - C1982056A (10)
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2010-06-04_PERMIT FILE - C1982056A (10)
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Last modified
8/24/2016 4:12:47 PM
Creation date
10/14/2010 10:11:32 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1982056A
IBM Index Class Name
Permit File
Doc Date
6/4/2010
Doc Name
Pages 2.05-123 to 2.05-197.3
Section_Exhibit Name
2.05.5 Postmining Land Uses
Media Type
D
Archive
Yes
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Effective drainage control for mine facilities, including haulroads, parking lots, tipple areas, buildings and other <br />structures is an important factor in minimizing contributions of sediment outside the Mine Permit Area. Controls <br />• for these facilities have been designed, and are built and maintained, to provide for proper handling of runoff as <br />reflected by Map 24, Surface Facilities. <br />Significant protection of surface water quality will be achieved through the identification, marking, and general <br />avoidance of stream buffer zones. No surface disturbance will occur within stream buffer zones, with the <br />exceptions of the existing road and railroad crossings of Foidel Creek, the temporary disturbance associated with <br />installation of the Thickener Underflow Line under Foidel Creek (within the existing road crossing disturbance <br />area) and the 6MN water transfer line under Fish Creek, access road crossings of Fish Creek to the Tow Creek <br />Shaft site and Northwest Mains /6 -Main North Shaft Sites, limited encroachment at the 6 -Main North site, and <br />subsidence - related disturbances discussed in 2.05.6(6). For all stream buffer zone disturbances, detailed plans and <br />designs have been submitted to and approved by the CDRMS, consistent with the applicable authorization <br />provisions of Rule 4.05.18. No streams within buffer zones or streams classified as intermittent or perennial will be <br />diverted. Stream buffer zones have been identified on Map 29, Reclamation. These zones will be marked in the <br />field near the areas of proposed surface disturbance immediately before construction activities. Highly visible <br />markers will be placed close enough together so that at least one marker is visible at any point along the boundary <br />of the buffer zone. <br />(ii) The rights of present users to surface and ground water, which may be adversely <br />affected by the surface coal mining and reclamation operations; <br />In the extremely remote event that retention of runoff by mining operations results in an adverse quantitative impact <br />within the Permit Area or downstream, any such impact can be mitigated with water from TCC's substantial <br />holdings of senior surface water rights within the general area. The total quantity of flow rights available for <br />mitigation is 115.18 cfs on a decreed absolute basis, and 638.34 cfs on a conditional basis, for a total of 753.52 cfs. <br />For a four -month irrigation season, this would translate to 27,414 acre -feet on an absolute basis, and 151,935 acre - <br />feet on a conditional basis, for a total of 179,349 acre -feet. The total quantity of storage rights is 15,515 acre -feet <br />on a decreed absolute basis, and 54,200 acre -feet on a conditional basis, for a total of 69,715 acre -feet. The total of <br />all storage and flow rights is 249,069 acre -feet. TCC has an adjudicated water rights Augmentation Plan that can <br />be used to implement mitigation of downstream surface water quantity impacts, should they occur. The adjudicated <br />Augmentation Plan documents that TCC holds sufficient water rights to mitigate any potential problem with respect <br />to water availability. The Augmentation Plan also allows for the replacement of tributary ground water with TCC's <br />senior surface water rights. Table 9, Summary of Ground Water Rights, provides the listing of these rights <br />controlled by TCC. Additional discussion is presented under Rule 2.04.7(3), Alternative Water Supply <br />Information, beginning on page 2.04 -34. <br />(iii) The quantity of surface and ground water both within the proposed permit and <br />adiacent area from adverse effects of the proposed mining activities or where the protection of quantity cannot be <br />ensured to provide alternative sources of water in accordance with 2 04 7(3) and 4.05.15; and <br />Surface Water Quantity Protection <br />The Foidel Creek Mine is not anticipated to cause any depletion in downstream water availability. Sedimentation <br />ponds have the potential to temporarily reduce downstream water availability due to impoundment of surface <br />runoff. As a result of mine inflow discharge to surface drainages, however, downstream water availability is likely <br />to be increased during the operation of the Foidel Creek Mine. <br />RN08 -05 2.05 -129 03/12/10 <br />
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