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<br />of suitable topsoil while Class 4 lends have no suitably material. The topsoil <br />suitability classification is described in thy ensuing discussion. <br />S=leeted charactyristics affecting the suitability of the soils for topsoil <br />material are in Table I-2. These data provide a guide for evaluating soils prior <br />to and during mining. Phase data have been incorporated in the .nap unit <br />descriptions to provide the basic information necessary for stripping, <br />stockpiling, and replacing suitable topsoil ,materials. <br />Tne depths listed in Tablas I-1 and I-3 for suitable topsoil materials are <br />averages for the soil series phase, soils series variant, or soil series complex. <br />fhay ware derived from field inspection and nay not match exactly the depths <br />• provided in the soil profile descriptions (Illustration B) or laboratory data <br />(Illustration C) for the typifying pedon. The computation of astimatyd averagy <br />depth of topsoil is shown in 'fable I-3 <br />Illustrations A and B provide details of snapping units and series descriptions. <br />g. FILL OR SUBSOIL CHARACTERIZATION <br />Thy non-toxic fill or subsoil material was evaluated through sampling and analysis <br />than characterized as suitable or unsuitable. The suitabilily criteria for major <br />parameters are shown in Table I-4. Table I-5 lists each waste aria and its <br />representative holy; li;niting factor(s), if any; and range of valuys for the <br />• <br />II.I-17 <br />