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2.05.3 <br />(ii)(C) Operations and maintenance requirements for ponds B, C, J, K, F and the gob <br />pile pond are the same. The sediment ponds must be dewatered if they contain <br />water above the maximum sediment level. Pond C must be dewatered between <br />each mine discharge event to assure the pond maintains the capacity to contain <br />the 10 -year, 24 -hour precipitation event. Dewatering events should occur within <br />48 hours after the storm event or mine discharge which caused the water <br />accumulation. Sediment must be removed from the sediment ponds. Ponds B <br />and C are designed to contain a one year sediment load which is less than the <br />more typical three year sediment design load. Pond J is designed to contain a <br />two year sediment load. Therefore, the sediment from the ponds may have to be <br />removed more frequently. Sediment will be removed from ponds B, C, J, K and <br />F and the gob pile sediment pond no later than when the ponds are 75% full of <br />sediment. Markers will be installed in Pond F clearly indicating the required <br />sediment cleanout level and maximum water level that could occur while still <br />allowing ample storage for the design event. <br />(ii)(D) Sediment ponds B, C, J, K, F and the gob pile sediment pond will be removed <br />after the site has been reclaimed and the vegetation on the reclaimed site is <br />adequate to control erosion. Pond removal must be authorized by the Division <br />• and the untreated drainage from the disturbed area ceases to contribute <br />additional suspended solids above natural conditions. <br />(iii) None of the sediment ponds meet the size requirements of this section, therefore <br />this section is not applicable. <br />(b) The sediment ponds are considered temporary ponds and are designed to meet <br />the requirements of Rules 4.05.6 and 4.05.9. <br />(c) Not applicable. <br />(d) Collection ditches and diversion ditches have been designed to comply with the <br />requirements of rules 4.05.3 and 4.05.4. <br />Small Area Exemptions (SAE) <br />The locations of the small area exemptions are presented on Maps 20, 21 -1, 35, <br />36, 36a and 39. The Applicant will monitor the flow from the small area <br />exemptions to assure compliance with 4.05.2(3). The Applicant will use its best <br />efforts to obtain samples. The samples will be analyzed for pH, conductivity and <br />total settleable solids. Samples will be in compliance if they contain settleable <br />• solid levels of 0.5 ml /I or less and the pH is greater than 6.5 and less than 9.0. <br />2.05-32- 07/07 <br />7k— X17 <br />Q PPRovED <br />