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• 5627. 50 12.88788 20792.5 561396.2 2.895 <br />5628. 00 14.33427 23126.0 624400.8 2.944 <br />5628. 50 15.81912 25521.5 689081.1 3.022 <br />5629. 00 17.33121 27961.0 754947.7 3.027 Top of Dam <br />The pond design does not meet MSHA Impoundment criteria, as shown below, since it does not have <br />a storage volume of 20 acre feet and does not have an elevation of 20 feet. <br />30CFR77.216 Water, sediment, or slurry impoundment and impounding structures; general. <br />(a) Plans for the design, construction, and maintenance of structures which impound water, sediment, <br />or slurry shall be required if such an existing or proposed impounding structure can: <br />1. Impound water, sediment, or slurry to an elevation of five feet or more above the upstream toe <br />of the structure and can have a storage volume of 20 acre-feet or more; or <br />2. Impound water, sediment, or slurry to an elevation of 20 feet or more above the upstream toe <br />of the structure; or <br />• 3. As determined by the District Manager, present a hazard to coal miners. <br />• <br />xsv~sEn Mnxcx zoov Attachment 2.05.3(3)-14-9 <br />