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The report includes 14 color photographs of the underdrain system and related <br />construction activities. The photographs provide substantial detail of the underdrain <br />system during construction. A height measurement is provided in the photographs to <br />provide a scale for the size of the material being placed in the underdrain system and to <br />indicate that the depth of the drain matches the depth in the approved design. <br />No problems or maintenance items were noted during the inspection of the Horse Gulch Excess Spoil <br />Fill. <br />Please note that according to Section 4.09.1(11)(a), certified reports are required during the following <br />construction periods: (1) removal of all organic material and topsoil, (2) placement of underdrain <br />systems, (3) installation of surface drainage systems, (4) placement and compaction of fill materials, <br />and (5) revegetation. If any of the above mentioned critical construction periods do occur please not <br />that additional reports are required. <br />If you have any questions feel free to contact me. (303) 866-3567, extension 8113 <br />Sincerely, <br />71 <br />Robert Zuber, P.E. <br />Environmental Protection Specialist