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• The proposed settling pond's design is adequate to hold precipitation <br />from a ]0 year - 24 hour storm. <br />Only .57 acre feet of water will be diverted into the sediment pond. <br />Care has been taken to minimize disturbance of the, normal Hydrologic balance in <br />both the mine plan area and the adjacent areas, therefore, preventing any <br />adverse long term changes in the Hydrologic balance. Post-mine land use will <br />be limited to cattle grazing. The land the mine plan occupies is entirely on <br />the up-slope and sees little actual grazing. However, the location of the <br />diversion channels have been designed to minimize any adverse impact that might <br />occur during post-mining land use of the permit area. <br />Changes in water quality will be monitored on a schedule to be set in <br />accordance with regulations and as required by the Department of Health's Water <br />Quality permit. <br />Disturbed areas will be stabilized by land shaping where it is neces- <br />• sary. <br />The temporary diversions will be constructed to safely pass peak <br />run-off, as specified. Diversion ditches will be constructed of earth and will <br />be lined with country rock. <br />ANNE BALDRIGE of the MLRD has provided help in the design of the <br />emergency spillway, sediment pond, and diversion channels. These recommenda- <br />tions will be followed. See attached letter. <br />When no longer needed, (during reclamations), these temporary diver- <br />sions will be refilled with original material to meet the requirement of 4.06, <br />4.14 and 9.75. <br />As previously stated, ANNE BALDRIGE'S recommendations on sediment pond <br />design will be incorporated to meet all criteria of rule 4.05.6, and con- <br />structed under the supervision of registered professional engineers. Certifi- <br />• cation of the constructed pond will be forwarded to the Division immediately <br />following construction. <br />