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2. Southwest Sediment Trap: Located on the eastern side of the <br />loadout, the trap has been fitted with a silt fence for sediment <br />drainage with the approval of TR 17. <br />3. Former truck-turn-around: Located on the eastern side of the <br />loadout, this area has also been fitted with a silt fence for sediment <br />control through TR 17 approval. <br />EFCI has submitted all hydrologic calculations and SEDCAD predictions for the <br />SAE's permitted both at the mine and loadout sites which can be found in Exhibit <br />19, Appendix C of the permit application. <br />All the remaining surface disturbed areas drain directly or are routed indirectly <br />through one of the two sediment ponds on the mine site, or two at the loadout. <br />Sediment ponds 4 and 5 are used for sediment settling at the mine site, while <br />sediment ponds L-1 and L-2 are used for sediment settling at the loadout. <br />Sediment ponds 2 and 3 were part of a water recycling system that was used <br />primarily for storage of water pumped from the Corley Well and was used in the <br />mine processing facility. These ponds, along with sediment pond 1, have been <br />reclaimed. <br />B. Stream Channel Diversions <br />1. The Division has approved the permanent diversion of Magpie Creek, an <br />ephemeral channel draining at least one square mile. This decision is <br />based on a finding that the proposed diversion meets the requirements of <br />Rule 4.05.18 and 4.05.4, applicable local, State, and Federal statutes and <br />regulations and that the diversion is designed to safeguard public safety <br />and to minimize adverse impacts to the hydrologic balance. (4.05.4(1) and <br />4.05.4(4)). <br />2. Therefore, the Division proposes to approve a permanent diversion. This <br />diversion is consistent with applicable state law, will not diminish <br />downstream water rights and meets the requirements of Rule 4.05.4. <br />(4.04.4(4)). <br />With the approval of Technical Revision No. 15, as part of the Mid-term <br />Review on 12/1/93, EFCI was granted approval for the permanent <br />diversion after the Division reviewed the submitted engineering plans and <br />hydrologic calculations. With the submittal of plans and their subsequent <br />approval, Stipulation No. 17 was satisfied. Stipulation 17 required the <br />designs to include plan views, a longitudinal profile, cross-sections and <br />channel protection details to meet the requirements of Rule 4.05.4(4). <br />The Division has subsequently approved Technical Revision 32 (approved <br />on 26 November 2001), which includes upgraded designs for the <br />permanent diversion. These design changes include decreasing the <br />Page 19 of 36