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Stipulation No.22 <br />THE OPERATOR WILL SUBMIT TO THE DIVISION BY JANUARY 31, 1994, <br />UPDATES TO ALL POND AS-BUILTS THAT INCLUDE ALL RECENT <br />IMPROVEMENTS ON PONDS 1,2,3,4,5 AND LOADOUT PONDS L-1 AND L-2. <br />Updated maps were received by the due date and are now <br />included in the permit application on Maps 24, 26 and 27. <br />Ponds 2 and 3 are lined with a geo-textile mat while ponds 1, <br />4 and 5 are incised into the ground. Ponds 1, 4 and 5 all <br />have primary and emergency spillways while ponds 2 and 3 do <br />not as they are part of a water storage system. Pond 3 has an <br />underdrain that is gravity driven to supply water to Pond 2 <br />where it is then used in the preparation plant. Pond 2 has a <br />discharge outlet and is NPDES point 003. Ponds 1,4 and 5 are <br />also NPDES discharge points. The two ponds at the loadout are <br />also discharge points with both primary and emergency <br />spillways. For further NPDES reference see Exhibit 4, "Other <br />permits". <br />Technical Revision No.15, approved 12/1/93, included updates <br />of pond designs on the permit maps, including the emergency <br />spillway location and sizing. <br />1. There are no variances that apply to any of the sediment <br />ponds at either the mine site or loadout. EFCI has no <br />intention to construct additional sediment pond <br />structures. <br />2. All ponds meet the requirements of Rule 4.05.6 and are <br />inspected quarterly. <br />More information on the Sediment ponds can be found in Section <br />2.05.3, pages 44R-49R and Maps 21-24 and 26-27 of the permit <br />application. <br />D. Acid-forming and Toxic-forming Spoil <br />No acid or toxic-forming materials have been identified as <br />occurring within the mine or loadout areas as a result of <br />chemical analyses of soils, coal, roof and floor materials, or <br />coal refuse. For comprehensive information on the results of <br />these tests, refer to Sections 2.04.6, 2.04.9 and Exhibit 9 of <br />the permit application. <br />E. Impoundments <br />No impoundments currently exist at the Southfield Mine site or <br />loadout. All containment structures have been re-structured <br />and .fitted with silt fences per Technical Revisions No. 15 and <br />17, approved in 1993. <br />30 <br />