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downstream side the bench is about 15 feet higher than the channel. Most of that difference is due to <br />the drop in the stream gradient with only a couple feet added due to the slope of the bench. The <br />bench is composed of a veneer of remaining scree mixed with soil derived from the quarry area. That <br />scree may rest on top of solid rock that previously formed a more elevated stream channel, however <br />that is not certain. There was no need to excavate all the way to the stream channel elevation as that <br />would induce a change in the stream channel configuration that could have negative effects upstream <br />and downstream Changing the course of Turkey Creek was not a part of the corrective action; only <br />creating a more rock free channel with sufficient protection on the west side to at least hold the <br />stream in its original channel for the foreseeable future. The edge of the bench leading down to the <br />stream channel was covered with large rock (rip -rap) to limit erosion into the bench. Eventually that <br />will probably occur as that appears to be what Turkey Creek was doing anyway. The bench will be <br />vegetated with grasses, but is expected to be quickly invaded by trees and shrubs. <br />A couple of other narrower benches were left higher than the wall at the back of the bench. In <br />time the land above the wall at the back of the bench will be graded, topsoiled, and vegetated, but <br />first there is still a good deal of rock that remains after the final shot that needs to be removed. <br />Before and After Photos: Following are a series of "before and after" photos. When the <br />first examination occurred on June 10, 2011, a series of photos were taken of the spill area. Some of <br />these were representative of different locations along the stream. Those were then re- photographed <br />on July 29. Unfortunately, the exact same view could not be taken in most of these images because <br />rock had been removed and topography altered since the June 10 photos. But the "after" photos are <br />close enough to being from the same location that a good idea of the changes can be obtained. <br />Other Photos: Next are a series of individual photos from various angles with different <br />views of the corrective action. These primarily show the shape of the new channel and its <br />relationship to surrounding features. The captions by each photo explain what is needed. Taken <br />together, with the other photos in this report, a complete picture of the entire extent of the work can <br />be seen. <br />Actual Area of Disturbance: On June 10, 2011, a boundary was established that <br />surrounded the disturbances plus some additional area for disturbance as needed for corrective <br />actions. That was determined to be 8,800 square feet. <br />Now that the corrective action has been completed, a more accurate number for the <br />amount of true disturbance can be estimated. Actual measurements have not been taken for every <br />small turn and jog in the disturbance area, but by comparison to the original 8,800 square feet it has <br />been estimated that between 5,000 and 6,000 square feet was actually disturbed beyond the affected <br />Corrective Action Completion Report Menzer Quarry M- 1976- 009 -HR 08/08/2011 Page 4 of 6 <br />