2011-09-09_REVISION - M1981185 ‎(43)‎

• Permit No: M1981185
• IBM Index Class Name: REVISION
• Doc Date: 9/9/2011
• Doc Name: Response to Fifth Adequacy Letter
• From: R Squared, Inc.
• To: DRMS
• Type & Sequence: CN1
• Media Type: D
• Archive: No

Mr. Wallace H. Erickson
Response to August 22, 2011 Hays Memorandum
September 9, 2011
Page 8
Response to Adequacy Issue No. 11.
Response to Adequacy Issue No. 11.a.
Wildcat will clarify that it will develop and provide to DRMS the proposed out
slope fill material removal and retaining structure construction method by adding the
following sub - bullets under the fourth bullet on Page 5:
• Proposed out slope fill material removal and retaining structure construction
method, including cross - sections and conceptual drawings for such methods;
Response to Adequacy Issue No. 11.b.
Wildcat will clarify that it will develop and provide to DRMS conclusions and
recommendations regarding the removal and excavation of previously placed fill
material by adding the following sub - bullets under the fourth bullet on Page 5:
• Stability of previously placed fill material and native material at the
previously constructed out slope, including whether previously placed fill
material will be removed, whether previously placed fill material and native
material is stable for purposes of fill placement, and whether excavation will
continue until bedrock is exposed to provide a subgrade for fill placement;
Adequacy Issue No. 12.
The Construction Summary and Scheduling work plan does not include the removal of
the existing timber cribbing retaining wall, construction of the new retaining (Gabion)
structures, or the placement and compaction of the new out slope fill. Please include
these items in the work plan.
Response to Adequacy Issue No. 12.
Wildcat will clarify that it will address these matters through its proposed
engineering and geologic evaluations, by modifying the Pre - Construction Activities
section of its New Access Road Construction Work Plan by adding the following sub -
bullets under the fourth bullet on Page 5:
• Appropriate method for removal of the existing timber cribbing retaining
wall, construction of the new retaining (Gabion) structures, and placement
and compaction of the new out slope fill.
Wildcat will also clarify these matters by modifying the following bullets on
Page 7 of the Construction Summary and Scheduling section of its New Access Road
Construction Work Plan:
DEN 97, 591, 784v1 9 -9 -11
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