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REV10527
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REV10527
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Entry Properties
Last modified
8/25/2016 1:16:53 AM
Creation date
11/21/2007 10:13:19 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1996083
IBM Index Class Name
Revision
Doc Date
2/15/2007
Doc Name
Second Adequacy Review Letter
From
DRMS
To
Bowie Resources LLC
Type & Sequence
TR45
Media Type
D
Archive
No
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2" on revised page Exh-8-167. <br />The Division has no further concems. Page Exh-8-167 was revised in the January 3, 2007 <br />submittal. <br />14. On revised page Exh-8-166 and in Appendix B of I~olume XI, no riprap is planned for ditch D-J3, <br />although the design velocity is 14.76 ft/sec. It would appear that riprap would be needed for that <br />high of a velocity. Ifyou agree, please provide riprap designs for ditch D-J3. <br />The Division has no further concerns. Page Exh-8-166 was revised in the January 3, 2007 <br />submittal to show that the correct velocity is 4.08 feet/sec. and that riprap is not needed. <br />l5. On Map No. 18, Postmining Topography, there are design ditch details for ditches Q, R and S, <br />which correspond to ditches D-J8-2, D-J9-2 and D-J3 respectively. Not all of the Map No. 18 <br />ditch details correspond with the hydrology design details found on pages Exh-8-166 and Exh-B- <br />167. Please revise accordingly. <br />Revised Map 18 and revised pages Exh-8-166 and (67 were provided in the January 3, 2007 <br />submittal. However, the design depth values on Map 18 include freeboard. Ditches W-W' and X- <br />X' show depths of 1.1 feet, as shown on page Exh-8-29iii, but they should have depths of 1.4 feet <br />(l.l feet plus 0.3 feet of freeboard), Please revise Map 18 accordingly. <br />The Division has one additional comment concerning Map l8. The post-reclamation ditch <br />designations listed on Map 18 do not correspond to any similarly named operational ditch designs <br />in the permit exhibits. For example, there is no clear way for one to know that the ditch design for <br />ditch Q-Q' on Map 18 is the same as the ditch design for ditch D-J8-2. The Division requests that <br />BRL address this issue. <br />l6. On revised Map No. 22-J, please add a designation for the primary discharge pump on the plan <br />view and remove, if appropriate, the reference to a "valved" dewateringpipe that appears on the <br />embankment cross .section. <br />The Division has no further concerns. Map 22-J was revised in the January 3, 2007 submittal. <br />17. On revised Map No. 22-J, the flow depth in the concrete ditch is shown to be 0.2 feet. However, <br />on revised page Exh-8-171, the flow depth is stated as being 0.3 feet. Please revise accordingly. <br />Map No. 22-J was revised in the January 3, 2007 submittal with the correct flow depth. However, <br />the Division did not notice during the first adequacy review that the concrete ditch cross section on <br />Map 22-J shows a bottom width of one foot while the design on revised page Exh 8-171 uses a <br />bottom width of two feet. Please revise accordingly. <br />Section 2.05.3(5), Topsoi] <br />18. Please describe how the proposed topsoil stockpile will be protected from livestock tragic. <br />BRL responded that there are no livestock in the azea of the proposed topsoil stockpile, There are, <br />
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