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4) Bench Marks - Page 3-27a describes the planned construction of 19 holes, of which three (3) will <br />be fitted with inclinometers and four (4) with piezometers. In addition, page 3-27a states, "all the sites <br />will have surface benchmarks." The March 2008 GMR indicates that all 19 holes were drilled between <br />late February and late July of 2007. Inclinometers and piezometers were installed as planned; <br />however, the actual number of bench marks established is only nine (9), rather than the 19 described in <br />the permit. <br />The number of surface bench marks installed is less than half the number that was committed to (9, <br />versus 19) in TR-99. Please explain to the Division both the reasoning behind and proposed <br />justification for this variance. <br />With the exception of the points listed above, the March 2008 Semi-Annual Geotechnical Monitoring <br />Report provided by Trapper Mining, Inc. is in general compliance with the requirements of Permit C- <br />1981-010. Measurements have been made in accordance with the seasonal schedule described on <br />page 3-27a of the permit. Thank you for the timely submittal. <br />If you have any questions feel free to contact me. (303) 866-6424 <br />Sincerely, <br />2Jason M ick <br />Environmental Protection Specialist <br />Cc: Dan Hernandez, DRMS