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on Exhibits 7A, 10A and 11A. Table 13-1 lists all conveyors, including widths <br />and lengths. <br />~J <br />~~ <br />2.05.3(4) Ponds, Impoundments and Diversions <br />(a)(i) There are 9 sediment ponds, 3non-discharging sumps, 1 sewage lagoon <br />system and multiple collection ditches, diversions, stream channel <br />reconstructions and culverts within the permit area. A general description, <br />location, and cross-section references for each drainage control structure are <br />listed in Table 13-Ei. In accordance with Rule 4.05.2(3), Table 13-7 contains a <br />list of areas that are not within the runoff collection area of a sediment pond. <br />The list includes a description of the area and means of sediment control. <br />Runoff calculations are given in Appendix 13-3. <br />All ponds, sumps, diversion ditches and collection ditches are relatively small in <br />area and shallow in depth. Construction of each is confined to the upper <br />alluvium above the water table. Negligible hydrologic impact is anticipated as a <br />result of drainage structures temporarily containing water. The extent of coal <br />extraction below sediment ponds, drainage ditches, impoundments and diversion <br />ditches was minimal; therefore, negligible subsidence effects are predicted. <br />Each structure is located in competent geologic stratum requiring no <br />geotechnical investigation. <br />13-5 (Rev. 10/05) <br />