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REV89573
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REV89573
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Entry Properties
Last modified
8/25/2016 3:11:27 AM
Creation date
11/21/2007 10:52:21 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1983033
IBM Index Class Name
Revision
Doc Date
5/16/1985
Doc Name
REVIEW LETTER RESPONSE FOR ALBERT R FREI WALSTRUM MINE CLEAR CREEK CNTY MLR PN 83-33
From
ENVIRONMENT INC
To
MLRD
Type & Sequence
AM6
Media Type
D
Archive
No
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~ o <br />to the 7380 elevation the same as the planned sight berm the <br />operator will better isolate the mine site. <br />2. This material will be compacted as it is placed. <br />3. The transportation corridor is 0.40 acres +/-. The secondary <br />access corridor has been removed from the plan at the request <br />of the Clear Creek Commissioners. <br />4. Not applicable for this amendment. <br />5. Not applicable for this amendment. <br />6, Mining should remove this corridor within 10 years after it <br />is first used. <br />C. Stage A was approved in a Technical Revision by the Board in <br />June, 1984. Its use will be to store growth medium needed to <br />reclaim Stage Z. <br />Exhibit E - Reclamation Plan <br />Questions a. thru e. are from the December 24, 1984 letter. Questions <br />A, thru F. are from the March 27, 1985 letter. <br />a, Not applicable for this amendment. <br />b. Yes. From the Affected Lands (Map Exhibit C) the slopes facing <br />U.S. 6 vary from 1.16v-lh to 1.06v-lh. The 2h-lv planned is <br /> less steep and meet MLR standards for non-water area slopes. <br />(~.` The requested cross-section is attached. Please refer to the <br />~7 D-1 and F maps for the locations of the cross-sections. Note <br /> that A-A' and B-B' are current conditions from the D-1 map <br /> and A-A'1 and B-B'1 are proposed final grade fro m the F map. <br /> The approximate location of the 6" drainage pipe is shown on <br /> both the F Map and the cross-sections.. <br />d. Drainage will be towards the creek but the slope will be very <br />gentle, less than 18. <br />It seems impractical to try to revegetate rip rap. Rip rap <br />is placed to protect a slope from erosion by the creek. <br />Placing growth medium on the rip rap would be inviting <br />erosion problems and the final condition of the slope would <br />not be adequate to meet the performance requirements to <br />get the bond released. No revegetation is planned for the <br />rip rap faces. <br />A. Not applicable for this amendment. <br />B. Not applicable for this amendment. <br />2 <br />
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