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(3) Topsoil will be spread over the graded surEac Too- <br />• soil depth will vary from 9 to 12 inches, dependi g on the <br />site. A Eront end loader will spread and grade the topsoil. <br />(4) The final surface will be compacted before seeding. <br />The surface will have rolling slopes of 1$ to 48 to conform <br />to the post-mining land form planned. Exhibit E. <br />i <br />Diversions and Impoundments <br />The mining plan has been designed to avoid direct impacts on <br />Columbia Ditch and the South Platte River. ~ <br />(1) An intermittent irrigation ditch, the Columbi Ditch, <br />runs northeast of the permit area and crosses th permit <br />area at several locations as shown in Exhibit C, late 2. <br />The lease includes use of the adjudicated water r'ghts in <br />this ditch. An existing diversion from Columbia Ditch and <br />buried pipe are indicated in Plate 2. It is proba Le that <br />an alternate diversion will be constructed close to the <br />plant site as indicated in Plate 7_. It is not ant'cipated <br />that Columbia Ditch will need to be diverted at a y time. <br />Columbia Reservoir, two miles north of the Alma Plac r, will <br />be cleaned prior to mining operations to avoid Eish in <br />Columbia Ditch. <br />(2) 7'he South Platte River runs through the s uthwest <br />portions of the claim. The South Platte River's ba ks have <br />been impacted by historical mining on the proper y. New <br />mining operations during the term of this permit ill not <br />impact the South Platte River in any way. A buffer zone of <br />at least 50 feet width from the stream banks will e main- <br />tained at all times, except for Access Road A, which already <br />exists. <br />(3) A buried water conduit runs along the eastern ortions <br />of the claim. A buffer of 200 Eeet will be maintained at <br />all times from this conduit. <br />(4) Any surface runoff encountered will be diver ed away <br />from the mining and processing areas with the use of ditches <br />and berms. Runoff will not be allowed to reach ny dis- <br />turbed sites. The Columbia Ditch intercepts surface run-on <br />upgradient for the entire mine site. <br />(5) Water from processing and encountered excess ground- <br />waters will be stored in the impoundment located at Plant A <br />and subsequently at the impoundment in the South entral <br />Phase. The impoundments will settle any suspended solids. <br />If necessary, water may be recycled from the impound ent by <br />pipe to the processing plant for reuse. <br /> <br />12 <br />