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<br />consistent with that expected of anon-engineered structure subject to the <br />ongoing physical forces of the South Platte River system. <br />(9) Representatives of the Brantner Ditch Company represented in <br />subsequent discussions with Applegate that that they have spent <br />approximately $100,000 from 1980 to present in attempts to stabilize the <br />Brantner diversion structure from continued degradation in the South <br />Platte River. This degradation is the result of downstream mining in the <br />river, rechannelization of the river, and sediment affinity caused by mining <br />upstream of the diversion structure. The continued degradaton of the river <br />would also impact the Bull Seep Slough where it discharges to the South <br />Platte River downstream of the Brantner diversion structure by increasing <br />the slope angle and water velocities throughout the Slough channel. <br />(10) Certain digital photographs of the area in question taken in January 2001 <br />and a February 2001 aerial photograph show a breach in the riverbank <br />between the South Platte River and the Bull Seep Slough. The breach <br />has an obvious gradient from the river into the Slough. The aerial <br />photograph shows the breach as being formed into the Bull Seep Slough <br />near the end of concrete rubble or riprap on the river side of the bank. <br />See Applegate Figure 1-7. <br />(11) The location of the January 2001 breach coincides almost exactly with the <br />point of attack from the river and the location where the UDFCD made <br />repairs after the May 5, 2001 event. The 2001 photographs confirm that <br />the present location of the Bull Seep was unrelated to the failure of the <br />South Platte River into the Bull Seep Slough on May 5, 2001. The breach <br />depicted in the 2001 photographs occurred at a time when there would be <br />low flows in the Bull Seep, thus supporting Applegate's conclusion that the <br />bank failed from the river into the Slough. <br />(12) The fact that a breach was evident some five (5) months prior to May 5, <br />2001 suggests that each flow during the intervening period that was higher <br />than the breach elevation at the time of such flow would continue to erode <br />the breach. As a result, progressively lower flows would succeed in <br />reaching the Bull Seep Slough from the river. <br />B. Natural and Progressive Bank Erosion Processes were the Principal <br />Mechanism of Failure, Evidence of Which was Plainly Evident in the <br />Area of the May 5, 2001 Event at Least Five 15) Months Prior to the <br />Event. <br />The DMG's reasoning in regard to the alleged violations appears to run as <br />follows: if the Bull Seep was not located as provided in the Reclamation Plan, it must <br />have been the reason there was a bank failure on the South Platte River on May 5, <br />2001. This reasoning is technically unsound and unsupported. It ignores the fact that <br />7 <br />