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hour), and cation exchange capacity low to moderately low (5 to 10 milli -equivalents per 100 grams). <br />The chemical properties of the overburden/interburden are also quite favorable. Sodicity and salinity levels <br />are low to moderate in the New Horizon 2 permit area and should pose no severe problem to successful <br />reclamation. Salinity levels in the upper four feet of regraded Bench 1 material will likely be comparable <br />to premining values. <br />The uppermost overburden transitions into the subsoil gradually on the majority of the permit area. Much <br />of this upper overburden (also called Bench 1 material) is subsoil. For the area west of 2700 Road, it is <br />standard practice that Bench 1 material will be used to supplement the subsoil to provide the best chance <br />for reclamation success. The topsoil replacement calculations discussed later in this Section accounts for <br />the use of some of this material. In all areas, Bench 1 is the first spoil below topsoil and subsoil. This is the <br />same as the pre mine conditions. <br />August 2013 (PR -08) 2.05.4(2)(d)-9 <br />