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<br /> <br />Mr. Gordon Morgan - 2 - March 30, 1990 <br />4. On page 3, it is stated that material excavated from the ponds will be <br />transported to the quarry for suitable disposal. As the pond will be <br />excavated below existing grade, this material should be handled similar <br />to overburden, with topsoil being salvaged. What are the pl+cns for <br />topsoil handling, salvaging and seeding? Where will the tops>oil be <br />located? <br />5. No discussion was provided on reclamation of the Aond area. Are the two <br />ponds planned as temporary structures or permanent structures? If <br />temporary, what is the final grading, drainage, stabilization and <br />revegetation planl If permanent, what is the intended use and continuing <br />maintenance plan? <br />6. The runoff calculations were developed based on a drainage area of <br />6.8 acres from subbasins A and B. The sediment load calculations were <br />based on a total area of 5,03 acres (1.98 acres for the visual berm plus <br />3.05 acres of active mining area). Why do the two areas not correspond? <br />7, On page 5, it is stated that "the depth of silt will be measured by <br />painted depth marks at 1 foot intervals on the vertical risers in both <br />ponds," What might be more beneficial is to have a single florescent <br />orange marker on the risers that, once passed over by the accumulated <br />sediments, would indicate when pond clean-out should start. <br />8. The Division requests that the volume of sediment removed during <br />clean-out operations be reported in the oermit annual report. <br />Sincerely, <br />Daniel I. Hernandez <br />Reclamation Specialist <br />DIWyJb <br />cc: John Doerfer, MLRD <br />Steve Renner, MLRD <br />Bruce Humphries, MLRD <br />Fred Banta, MLRD <br />5618E <br />