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studies had yet to be conducted due to permitting requirements from the USACE and <br />USFWS. Permitting for the geotechnical studies was required because of issues related to <br />the endangered Preble's Meadow Jumping Mouse (PMJM). <br />Cotter contacted Mr. Bird and Mr. Waldron to discuss this situation, and was advised to <br />submit an extension request. Cotter was also advised of the Division's preference for a <br />single submittal of complete technical responses to all Adequacy Review comments (versus a <br />partial submittal prior to finalization of engineering designs), and that if 30 -days was <br />insufficient to complete the necessary permitting, geotechnical studies, and final engineering <br />design work, subsequent 30 -day extension periods could be requested as needed in order to <br />complete responses to all Adequacy Review comments. The first extension request, <br />submitted by Cotter on August 5, 2011, was approved by DRMS on August 8, 2011. <br />Approvals from both USACE and USFWS to perform the necessary geotechnical studies at <br />the site were obtained by August 9, 2011. This work was initiated the same week. <br />Geotechnical field work associated with the Phase 1 upper cutoff wall has now been <br />completed, though a final report on that portion of the study is still pending. Final <br />engineering design work for Phase 1 of the project is expected to be completed by October 7, <br />2011. <br />Geotechnical field work associated with Phase 2 of the pipeline project is continuing. It will <br />likely be several months before Phase 2 portions of the geotechnical study are completed and <br />Wright Water Engineers Inc. (WWE) has finalized the engineering design work. It is <br />currently estimated that a complete set of responses to Adequacy Review comments, <br />including finalized engineering design information as requested, could be completed by <br />February 15, 2012. More detailed information on finalization of design work is provided <br />below. <br />2) Request: A detailed report on the following items: <br />a) The status of Cotter's response to the Division's adequacy concerns. <br />Response: Responses to all Adequacy Review comments have been developed, though a <br />number of responses related to final engineering designs are currently conceptual in <br />nature only, pending findings of the geotechnical studies. If the Division is willing to <br />accept some conceptual design information until amended responses based on final <br />engineering designs can be completed, Cotter will submit responses as currently written. <br />Such a submittal is requested if it would facilitate conditional approval of TR -18 and <br />avoid any associated delays with respect to implementation of Phase 1 construction work. <br />b) Provide the status of completion of the engineering designs and expected date of <br />finalization. <br />Response: As discussed in Comment No. 1 above, the design and construction of the <br />Ralston Creek Temporary Diversion Project has been divided into two <br />design/construction phases. <br />2 <br />