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T <br /> GCC <br /> Ric Grande 'WeVIE0 <br /> Pueblo Plant MAY i <br /> May 8, 2017 ��4%�tmv <br /> Colorado Division of Reclamation, Mining and Safety. <br /> Department of Natural Resources <br /> 1313 Sherman Street, Room 215 <br /> Denver,Colorado 80203 <br /> RE: Technical Revision (TR-06)Adequacy Review <br /> Pueblo Cement Plant and Limestone Quarry, File No. M-2002-004 <br /> Please see below for answers t TR-06 dequacy Review response from the Agency, received on <br /> April 14, 2017. <br /> 1. Within Section B- Well Completion and Development, GCC proposes to drill a groundwater <br /> monitoring well through the Fort Hays Limestone, terminating at the contact with the Codell <br /> Sandstone of the Carlile Shale formation.If saturation is not observed at the Fort Hayes/Codell <br /> contact, the well will be screened from five feet above the Fort Hayes contact to the top of Codell <br /> Sandstone. This proposal is contrary to GCC's April 22,2016 letter and Close Consulting Group's <br /> March 17, 2016 technical evaluation, which state the primary target screen interval would <br /> include,the Codell and continue up approximately five feet into the Fort Hayes/Codell contact. <br /> Please commit to screening the well for the entirety of the Codell Sandstone and extending five <br /> feet above,into the Fort Hayes Limestone,as previously indicated. <br /> MW-006 primary target interval includes the Codell Sandstone formation and will continue <br /> approximately five (05) feet into the Fort Hayes Limestone formation. <br /> 2. Please describe well completion and development if saturation is observed. Close Consulting <br /> Group's March 17, 2016 technical evaluation included a recommendation to install nested <br /> wells to monitor the Fort Hayes and Codell separately if saturation is observed, please include <br /> this as a part of TR-06 Section B. <br /> If saturation at the Fort Hayes - Codell contact is observed during drilling, a well cluster will be <br /> installed to monitor both intervals separately(see response to #3 below for additional details). <br /> 3. Please provide the Division a cross section, similar to the Cross Section A A'figure included <br /> in the Close Consulting Group's March 17, 2016 technical evaluation, depicting the proposed <br /> MW-006. Please also provide an additional cross section which depicts the potential nested <br /> wells if saturation is observed,as discussed in Item #2 above. In addition,please submit a map, <br /> similar to the map included within the Close Consulting Group's March 17, 2016 technical <br />