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Letter to Mr. Michael 2 July 25, 2013 <br />TR -04 Adequacy Review File No M- 1990 -057 <br />b) Demonstrate that the colluvium at the bottom of the TSF can handle infiltration of the <br />estimated maximum inflow rate (24 gpm). <br />c) Provide a brief analysis in regard to how the extent of the seeps may be impacted by <br />increased inflow and describe how the installation of the geonet will be altered to <br />accommodate seeps with an increased surface area. <br />d) Provide a drawing showing the approximate location of the seeps and the approximate <br />location of the geonet installation. <br />e) Provide a detailed description of how the geonet will be installed, including any <br />specifications for anchoring. <br />As previously mentioned, if you are unable to provide satisfactory responses to any inadequacies <br />prior to July 31, 2013, it will be your responsibility to request an extension of time to allow <br />for continued review of this Technical Revision. If there are still unresolved issues when the <br />decision date arrives and no extension has been requested, the Technical Revision will be denied. <br />If you have any questions, please contact me at (303) 866 -3567 x8116. <br />Sincerely, <br />4Mchael LA. C ningham <br />Environmental Protection Specialist <br />