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Section 816.22 (a) Continued. <br />• <br />Keri'Tipple-Ai@a <br />The area at the tipple which contains topsoil to be encountered <br />during regrading does not have any vegetative cover that would <br />interfere with the use of the topsoil, as detailed in Section <br />779.19 and on Map 19, Kerr Tipple Area Vegetation. This material <br />will be removed during regrading prior to respreading of the top- <br />soil. <br />Marr"Mine Area <br />All topsoil at the Marr Mine Area has been removed prior to sub- <br />mittal of this permit. <br />(b) Materials to be removed. All topsoil shall be removed in a aepa- <br />• rate layer from the areas to be disturbed, unless use of substitute or <br />supplemental materials is approved by the regulatory authority in ac- <br />cordance with paragraph (e) of this Section. If use of substitute or <br />supplemental materials is approved, all materials to be redistributed <br />shall be removed. <br />Rert"Notth"Area <br />All topsoil (A Horizon) will be removed in a separate layer from <br />the area to be disturbed. In the case of Cryorthents (X60) there <br />is little or no horizon development, and therefore topsoil defined <br />as A horizon is generally not present. Areas of Cryorthents are <br />found in several locations in the Kerr North Area, and will be <br />treated individually as follows. <br />The Cryorthents area in Pit 111 will be handled according to the <br />requirements of Section 816.22 (c), namely six inches of material <br />will be salvaged. The Cryorthents area in Pit 112 will not be sal- <br />vaged, nor will the Cryorthents area in Pit 113. According to <br />816-9 <br />