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Leigh Simmons <br />C 1981012 — TR -69 <br />Page 4 of 4 <br />Please provide surveyed elevations that are sufficient in number and consistent in the distance <br />between stations to correspond to the areas of concern with the October 8, 2013 survey that <br />were previously identified by the Division so that we can determine whether the ditch has been <br />regraded to achieve positive flow. <br />6. The Division also noted, in our review of the October 8, 2013 as -built survey provided for Ditch D- <br />55, that the ditch has not been constructed to meet the minimum depth requirement, and had not <br />been lined with rip rap as required by the approved design. These issues remain outstanding. New <br />Elk Coal Company, LLC will need to either reconstruct the ditch so that it is consistent with the <br />approved design, or propose a revised design that demonstrates that the constructed ditch will <br />meet the requirements of Rules 4.10.3, 4.09.2(7), and 4.05.4. <br />7. The drawings provided by NECC were not certified by a qualified registered professional engineer <br />or professional geologist, as required by Rule 2.10.3(2). Please ensure that the drawings to be <br />submitted in response to the concerns outlined above are certified as required by Rule 2.10.3(2). <br />Should you or the operator have any questions or need additional information, please let me know. <br />