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Sediment Demonstration — Mine Site - revised 1/13/2016 w/ addendum Page 4 <br />Section 3.03.1 <br />Non -mined condition <br />A=RKLSCP <br />A = (24.7) (.32) (2.05) (.0218) (1.0) <br />A=.353 <br />Reclaimed condition <br />A=RKLSCP <br />A = (24.7) (.32) (2.05) (.017) (1.0) <br />A=.275 <br />The reclaimed condition produces less sediment than the non -mined condition. A summary of the <br />results is shown on Table 2. <br />Table 2 <br />Mine site and RDA Annual Sediment Yield <br />tons/acre/year <br />Non -mined Condition .353 <br />Reclaimed Condition .275 <br />Addendum (1/8/2016) <br />As a result of the DRMS adequacy review of SL -03 (1/8/2016) EFCI has provided additional <br />information and supporting analysis specific to the LS factor and the sediment demonstration for the <br />mine site. <br />DRMS concern: <br />Regarding EFCI's explanation as to why the LS factors for the reclaimed areas and the <br />non -mined areas are identical, the Division still believes that is best to assess the LS <br />parameter separately: the post -mining condition should be based on the current <br />topography of the areas where bond release is sought, whereas the pre -mining condition <br />should be based on the pre -mining topography of the actual location of the RDA and <br />facilities area or on the topography of adjacent unmined areas. Also, Map 13 and 29 are <br />referenced in the sediment demonstration for the mine site; however, these maps are <br />related to the loadout. Please correct this error. <br />EFCI response: <br />EFCI used Map 33 to determine the LS factors for the sediment demonstrations. The text has been <br />corrected in the previous section. <br />EFCI has re-evaluated the sediment demonstration specific to the RDA and the surrounding area. <br />Two additional demonstrations were conducted. Demonstration #1 uses LS factors calculated from <br />the gently sloping terrain of the RDA footprint for the pre -mine condition and uses actual length and <br />