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All the remaining surface disturbed areas drain directly or are routed indirectly through one of <br />the two sediment ponds on the mine site, Ponds 4 and 5. Ponds L1 and L2 were used for <br />sediment settling at the loadout until recently; they have been reclaimed as described below in <br />the Sediment Ponds section of this document. <br />Sediment Ponds 2 and 3 were part of a water recycling system that was used primarily for <br />storage of water pumped from the Corley Well and was used in the mine processing facility <br />These ponds along with sediment Pond 1 have been reclaimed. <br />Ponds 4 and 5 at the mine site and Ponds L1 and L2 at the loadout are NPDES discharge points. <br />Discharge Monitoring Reports (DMRs) submitted during the permit term associated with this <br />findings document (between third quarter 2009 and third quarter 2014) indicate that there have <br />been no discharges out of these ponds. <br />B. Diversions and Conveyance of Overland Flow <br />Drainage ditches are used at the Southfield Mine to divert runoff to sediment ponds and around <br />certain structures, including the haul road and the RDA. These are shown on Map 18 of the <br />PAP. <br />C. Stream Channel Diversions <br />The Division has approved the permanent diversion of Magpie Creek, an ephemeral channel <br />draining at least one square mile. This decision is based on a finding that the proposed diversion <br />meets the requirements of Rule 4.05.18 and 4.05.4; meets applicable local, State, and Federal <br />statutes and regulations; and that the diversion is designed to safeguard public safety and to <br />minimize adverse impacts to the hydrologic balance (4.05.4(1) and 4.05.4(4)). This diversion is <br />consistent with applicable state law, will not diminish downstream water rights, and meets the <br />requirements of Rule 4.05.4. <br />The Division reviewed the submitted engineering plans and hydrologic calculations for this <br />diversion (Exhibit 19 of the PAP), and, with the approval of Technical Revision Number 15, <br />EFCI was granted approval for the permanent diversion. The Division has subsequently <br />approved Technical Revision 32, which includes upgraded designs for the permanent diversion. <br />These design changes include decreasing the slopes, a new seed mix for the vegetated channel, <br />and check dams and riprap for the steep portion of the diversion. <br />D. Sedimentation Ponds <br />There are two remaining sediment ponds at the mine site, Ponds 4 and 5. TR -42 has been <br />proposed to convert Pond 4 to permanent status. TR -44 has been proposed to convert Pond 5 to <br />permanent status. <br />I: <br />