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BRENT PIT CONVERSION <br />M-1978-072 <br />The following additional information is provided as per your letter of September 29, <br />2008: <br />6.4.3 EXHIBIT C - Pre-mining and Mining Plan Map(s) of Affected Lands <br />1. The barbed wire fence is owned by Lincoln County. See revised Pre-mining and <br />Mining Plan Maps and revised Exhibit S. <br />6.4.4 EXHIBIT D - Mining Plan <br />1. The topsoil or overburden stockpiles will be stabilized by seeding the piles with <br />annual or perennial grasses. See the attached memo from Brian Johnson of the <br />N. R. C. S. The memo spells out the variety of grass and a recommended seeding <br />rate per acre. Stabilization will take place as soon after the stockpiles are <br />completed as possible. <br />i. The attached revised Mining Plan map replaces the map originally <br />Submitted 9included is one copy.) A revised Pre-mining Map and one <br />copy are also included. <br />Road and Bridge personnel have been cautioned to re-handle the topsoil <br />as little as possible. <br />2. A "Stormwater Containment Dike" or berm will be constructed by motor <br />Grader. This berm will prevent storm water run-off from entering Hell Creek. <br />This berm has been added to the Mining Plan Map. <br />3. Any overburden encountered will be stockpiled in the approximate location <br />Shown. <br />4. Lincoln County has discontinued any mixing of material on this site; nor will <br />any mixing ever be done in the future in any Lincoln County permitted site. <br />All traces of the roto-milled material will be removed from the pit site. Any of <br />the remaining "mixed" material will also be removed. <br />5. Since the mixing operation has ceased and clean up will be done there should be <br />no affects to water quality or quantity.