Laserfiche WebLink
volume of flow for the appropriate storm event. Al] 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, parking lots, tipple areas, buildings and other structures is an <br />Important factor in minimizing contributions of sediment outside the proposed pemtit area. 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 and marking of stream <br />buffer zones. No surface dis ce will occur within the stream buffer zones, rti~th the exception of an access road <br />crossing of Fish Creek to th T~'reek Shaft site and subsidence related disturbances discussed in2.05.6(3)(b)(v). <br />The access road crossing of Fish Creek is not planned until the early 2000's, at which time detailed designs rti~ll be <br />submitted to DMG for approval. No streams within buffer zones or streams classified as intermittent or perennial <br />will be diverted. Stream buffer zones have been identified on Map 29, Reclamation. These zones will be marked in <br />the 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 of <br />the buffer zone. <br />(ii) The ri h[g_s of present users to surface and [[round water, which may be adversely <br />affected by the surface coal mining and reclamation operations; <br />In the extremely remote event that retention of mnoff by mining operations creates an adverse quantitative impact <br />within the permit area or downstream, any injur}• 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 cubic feet per <br />second on a decreed absolute basis and 638.34 cubic feet per second on a conditional basis for a total of 753.52 <br />cubic feet per second. For afour-month irrigation season, this would translate to 27,414 acre-feet on an absolute <br />is and 151,935.49 acre-feet on a conditional basis for a total of 179,349.49 acre-feet. The total quantity of <br />orage rights is ]5,515.32 acre-feet on a decreed absolute basis and 54,200 acre-feet on a conditional basis, for a <br />total of 69,715.32 acre-feet. The grand total of these amounts is 249,069.8 acre-feet. TCC has an adjudicated water <br />rights augmentation plan that can be used to implement mitigation of downstream surface water quantity impacts. <br />The presentation of these quantities and augmentation plan demonstrates that TCC holds sufficient water rights to <br />mitigate any potential problem with respect to water availability. Water rights owned by TCC can be used to <br />mitigate impacts caused by the TCC operations. Also, The augmentation plan allows for the replacement of tributary <br />ground water with TCC's senior surface water rights. Table 9, Summan~ of Ground Water Rights, provides the <br />listing of these rights controlled by TCC. Additional discussion is presented under Rule 2.04.7(3), Alternative Water <br />Supply Information, beginning on page 2.04-34. <br />~iiL The quantit~•_of surface and round, water both within the ro osP,d permit and <br />adjacent area from adverse effects of the proposed minine activities, or where the protection of quantity cannot be <br />ensured to provide alternative sources of water in accordance with 2.04.7{31 and 4.05.15; and <br />Surface Water Ouantitv Protection <br />The Foidel Creck Mine is not anticipated to cause any depletion in downstream water availability. Sedimentation <br />ponds have the potential to reduce downstream water availability due to impoundment of surface runoff. However, <br />as a result of mine inflow discharge to surface drainages, downstream water availability is likely to be increased <br />during the operation of the Foidel Creek Mine. <br />Ground Water Ouantiri Protection <br />APPR®VED 1-~,, 0 8 2000 <br />TR 99-32 2.05-129 1/3/00 <br />