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Mr. Wallace H. Erickson <br />Response to September 28, 2011 Cazier Memorandum <br />October 11, 2011 <br />Page 11 <br />o Selected samples will be transported for laboratory testing <br />including moisture content, dry density, strength, classification, <br />grain -size distribution, hydraulic conductivity, and compaction <br />tests; <br />o Perform engineering and geologic evaluations to develop <br />conclusions and recommendations regarding the following: <br />• Grading, including fill placement and compaction, <br />embankment configuration, keyway depths, subsurface <br />drainage, and allowable cut and fill slopes; <br />• Impoundment liner evaluations, including the suitability of <br />onsite materials for construction of augmentation pond <br />liner, compaction and moisture conditioning requirements, <br />and soil improvement considerations, as necessary; <br />• Stability of cut and fill slopes and pond slopes, including <br />slope stability analyses addressing a) empty /dry <br />conditions, b) full capacity conditions, and c) rapid draw <br />down conditions for any embankment design to impound <br />water with slopes greater than 3H: 1V; and, <br />• Design for methods to stabilize cut and fill slopes and <br />pond slopes, as necessary. <br />o Prepare a technical memorandum summarizing the results of the <br />work described above. <br />o Submit specification or design for pond liner materials or methods <br />to stabilize embankments, cut and fill slopes, and pond slopes to <br />DRMS, as necessary, pursuant to the Technical Revision or <br />Amendment process. <br />o After obtaining DRMS approval through the Technical Revision <br />or Amendment process, proceed with remainder of work plan. <br />As always, please do not hesitate to call me or George Robinson of R Squared, <br />Inc., at (720) 641 -2534, with any questions or concerns. <br />DEN 97,629,168v1 10 -11 -11 <br />GREENBERG TRAURIG, LLP m ATTORNEYS AT LAW I WWW.GTLAW.COM <br />