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if this is the proposed mining method. <br />5) The mine plan map shows the stockpile for the Phase III overburden located over two drainages in Phase II. <br />What measures will be implemented to protect the overburden stockpiles from a major storm event? <br />- Response Adequate <br />6) Once mining moves from Phase I into Phase II, what portion of Phase I and Phase II will be disturbed? <br />Also, please specify the maximum proposed disturbance in acres. This information is required to accurately <br />calculate a reclamation cost estimate. <br />- The response submitted states that 10 acres is the proposed maximum disturbance. Will the existing 9.9 <br />acres of disturbance be completely reclaimed and revegetated prior to moving into Phase II? <br />7) The power line drawn on the mine plan map does not appear to reflect what was observed during the <br />January 6, 2010 inspection. The power line observed appeared to run along the majority of the southern <br />permit boundary. Please confirm that the mine plan map submitted is accurate. <br />- Response Adequate <br />8) In Exhibit E on page 1, in the Backfilling and Grading section, it is stated that "efforts will be undertaken to <br />minimize compaction of the soil structure degradation." Please specify what depth of soil will be <br />backfilled. According to the mine plan map, slopes will be mined to 3H:1V. Please clarify if the backfill <br />methods described in the reclamation plan are consistent the quantities described in the table located on <br />page three of the mine plan. <br />- Response Adequate <br />9) Per Rule 3.1.5(3), please state what method of compaction will be used to insure stable slopes. <br />- Please see Geotechnical Exhibit Review. <br />10) Per Rule 6.4.5(2)(c), please provide a description of how the reclamation plan will be implemented to meet <br />each applicable requirement of Section 3.1. <br />- Response Adequate <br />11) Please clarify what growth medium will be used if topsoil cannot be salvaged and what depth will it be <br />replaced on the re-graded slopes. <br />- Response Adequate <br />12) Please provide all inputs and calculations used to determine the flows that are on the "Off Site Drainage <br />Map" in Exhibit G. <br />- Please read the enclosed memo from Berhan Keffelw that reviews Exhibit G. <br />13) The proposed additional acreage is above and adjacent to Highway 141. What measures will be <br />implemented to protect highway 141? <br />- Please read the enclosed memo from Allen Sorenson Geotechnical Exhibit Review. <br />14) Per Rule 6.4.19 provide one of the following: