Laserfiche WebLink
volume of flow for the appropriate storm event. All ponds have been designed to treat effluent as documented in <br />Exhibit 8, Sediment Control Plan and Exhibit 30, NPDES Permits (CO-0027154, CO-0036684, and CO-0042161). <br />• Drainage control for such facilities as haulroads, pazking lots, tipple azeas, buildings and other strctwes is an <br />important factor in minimizing contributions of sediment outside the proposed pemmit azea. All such facilities have <br />been designed, built and maintained to provide for proper handling of runoff as reflected by Map 24, Surface <br />Facilities. <br />Significant protection of surface water quality will be achieved through the identification, mazking, and general <br />avoidance of stream buffer zones. No swface distwbance will occw within stream buffer zones, with the <br />exceptions of the existing road and raihoad crossings of Foidel Creek, the temporary distwbance associated with <br />installation of the Thickener Underflow Line across Foidel Creek, access road crossings of Fish Creek to the Tow <br />Creek Shaft site and Northwest Mains/6-Main North Shaft Sites, limited encroachment at the 6-Main North site, <br />and subsidence-related distwbances discussed in 2.05.6(6). For all stream buffer zone distwbances, detailed plans <br />and designs have been submitted to the DMG for approval. No streams within buffer zones or streams classified as <br />intermittent or perennial will be diverted. Stream buffer zones have been identified on Map 29, Reclamation. <br />These zones will be marked in the field near the azeas of proposed surface distwbance immediately before <br />construction activities. Highly visible markers will be placed close enough together so that at least one mazker is <br />visible at any point along the boundary of the buffer zone. <br />(iil The rights of oresent 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 creates an adverse quantitative impact <br />within the permit area or downstream, any injury can be mitigated with water from substantial holdings of senior <br />surface water rights within the general area held by TCC. The total quantity of flow rights is 115.18 cfs on a <br />decreed absolute basis, and 638.34 cfs on a conditional basis, for a total of 753.52 cfs. For a fow-month irrigation <br />• season, this would translate to 27,414 acre-feet on an absolute basis, and 151,935 acre-feet on a conditional basis <br />for a total of 179,349 acre-feet. The total quantity of storage rights is 15,515 acre-feet on a decreed absolute basis, <br />and 54,200 acre-feet on a conditional basis, for a total of 69,715 acre-feet. The grand total of these amounts is <br />249,069 acre-feet. TCC has an adjudicated water rights augmentation plan that can be used to implement <br />mitigation of downstream surface water quantity impacts, should they occw. The presentation of these quantities <br />and augmentation plan demonstrates that TCC holds sufficient water rights to mitigate any potential problem with <br />respect to water availability. Water rights owned by TCC can be used to mitigate impacts caused by the TCC <br />operations. Also, the augmentation plan allows for the replacement of tributary ground water with TCC's senior <br />surface water rights. Table 9, Summary of Ground Water Rights, provides the listing of these rights wntrolled by <br />TCC. Additional discussion is presented under Rule 2.04.7(3), Alternative Water Supply Information, beginning <br />on page 2.04-34. <br />(iiil The quantity of surface and eround water both within the proposed permit and <br />adiacent area from adverse effects of the nronosed minine activities, or where the protection of ouantity 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 Ouantitv 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 /> <br />MR07-223 2.05-129 10/03/07 <br />