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XIII. Rule 4.13 Contemporaneous Reclamation <br />Variances to contemporaneous reclamation, for the backfilling and grading of Pit A and Pit B <br />and for the current backfilling of the pits with fly ash, were granted during mining operations. <br />See Backfilling and Grading following. <br />XIV. Rule 4.14 Backfilling and Grading <br />CEC requested additional time for backfilling and grading following coal removal in a contour <br />strip mine. A detailed written analysis provided by CEC in accordance with Sec 2.05.4(2)(c) <br />has demonstrated that additional time was necessary. Therefore, the Division approved the <br />additional time [Rule 4.14.1(1)]. A variance was granted in February 28, I989 to allow for <br />use of the A and B pits as fly ash disposal sites (Technical Revision 20). Fyyash disposal is <br />anticipated to last to 2010 (Application, Sec 2.05.3, page 103). <br />The Division approved a minor modification of the general requirements of Rule 4.14.2 for <br />reclamation of Pits A and B to approximate original contour to accommodate the disposal of <br />flyash (see Application, Sec 2.05.4, page 113). Slopes are slightly steeper to reduce <br />infiltration to the buried flyash. <br />XV. Rule 4.15 Revegetation <br />A. The approved revegetation plan emphasizes native species, `°• _~_.. _~~_._._ .t_ ..__ <br />T.~ _ .L,- 1..-J . <br />, , <br />B.A sorghum mulch was approved as a means to meet soil stabilization requirements <br />until vegetation is re-established (Application, Sec 2.05.4, page 115a). (Rule 4.15.4) <br />C. Approved methods to measure herbaceous cover and production, species diversity, <br />and woody plant density are discussed in the Permit, Sec 2.04.10{4) Plant Community <br />Measurements (see also Application, Sec 2.04.10). For this permit, there is no <br />minimum density (stems/acre) standard for woody plant reestablishment (Application, <br />Sec 2.05.4, page 116a). These techniques include selection of sample locations using <br />randomly-generated grid coordinates, random determination of transect directions, and <br />use of a stationary optical sighting device to determine hits. [Rule 4.15.7(1)] <br />D. Comparisons between reclaimed °-J .°J'_..°t_J -°`--°-°- areas and the <br />undisturbed reference area (Osgood, fenced and unfenced), in order to demonstrate that <br />29 18 February 1998 <br />