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Section 816.22(d) Continued. <br />From this data it is concluded that the best handling of this small <br />quantity of subsoil would be incorporating it into the topsoil <br />stockpile of Pit O1 and the subsequent reapreading of this mixture <br />which would result in: 1) a better quality cover-soil due to <br />reduced clay content, and 2) a slightly thicker (0.7 inches) depth <br />of respread cover-soil material. <br />~~ <br />U <br />Keii"T1¢ple"Area <br />The Fleer soil type encountered does not have a B horizon, and the <br />C horizon is generally gravelly loamy sand or sand texture (Exhibit <br />26, Soil Profile Descriptions). The fill material currently at the <br />site is sandy loam to loamy sand texture (Table 45, Soil Chemical <br />and Physical Properties Lab Analysis Kerr Tipple Area), and is <br />therefore as good as or better suited as subsoil than the Fleer <br />soil type C horizon, as interpreted from Table 46, Suitability <br />Ratings for Kerr Tipple Area Soils as Sources of Topsoiling Materi- <br />al. Therefore, only the topsoil (A horizon) will be salvaged at <br />the tipple site. <br />Marr"Mine Aiea <br />Wherever depth of topsoil was less than six inches, B horizon was <br />salvaged to a total salvaged depth of six inches. Otherwise, no B <br />horizons or C horizons were salvaged in the Marr Mine Area. <br />(e) Topsoil substitutes and supplements. <br />(1) Selected overburden materials may be substituted for or used as a <br />supplement to, topsoil, if the regulatory authority determines that the <br />resulting soil medium is equal to or more suitable for sustaining reve- <br />getation than is the available topsoil and the substitute material is <br />the best available to support revegetation. This determination shall be <br />based on: <br />816-15 <br />