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to determine the locations of additional boreholes to be packer tested and grouted <br />Although the packer testing provides numerical measurement of permeability, there is not <br />a numerical cut off to determine the effectiveness of a grouting Phase. <br />3. The Operator has stated that adverse impacts to Monitor Well 18 are not expected as <br />a result of installing the grout curtain. Please identify Monitor Well 18 on Figure 1: <br />Proposed Grouting Area. <br />A revision of Figure I is enclosed showing the location of Monitoring Well 18. <br />4. Please commit to providing the Division with a copy of the grouting as -built report <br />within 30 days after completion of the program. <br />Cotter will provide the Division with a copy of the grouting as -built report within 30 days <br />after completion of the program <br />I trust you will find these responses adequate to facilitate DRMS's approval of Cotter's <br />TR -22 request; however if you have any further comments or questions please let me know <br />as soon as possible. Cotter is aware of the April 24, 2015 deadline for approval and, by <br />separate correspondence, has requested an extension of the deadline for approval to May 1, <br />2015. <br />Sincerely, <br />Ken Mushinski <br />President, Cotter Corporation (N.S.L.) <br />Enclosure <br />Cc: Tony Waldron, <br />DRMS <br />Tom Kaldenbach <br />DRMS <br />John Hamrick <br />Cotter <br />Cotter Corporation (N.S.L.) Telephone (720) 554-6200 <br />7800 E. Dorado Place, Ste. 210 Fax (720) 554-6201 <br />Greenwood Village, CO 80111 <br />