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matting and seeded, or rocked. The method used will, of course, depend on site <br />conditions. Continued observations will be made of this area for problems or necessary <br />maintenance. <br />On slopes where no swale or defined channel exists, regrading, or disking, or chisel <br />plowing will be performed, depending on the extent of the erosion. Reseeding will then <br />take place. <br />In addition to the above, contour furrows in and above the erosion area may be <br />constructed to trap and slow down the runoff. Straw dikes can also be used where <br />appropriate to control runoff and promote revegetation. <br />If corrective measures described above fail, WFC proposes to observe and reevaluate the <br />situation. A combination of the first two methods described or some variation therein will be <br />applied. These activities can include, but are not limited to, rock channels, contour furrows or <br />laterals with rock or matting bottoms, V ditches made with the dozer or motor grader, and <br />subsequent revegetation. <br />Head cutting in channels will be controlled by a number of methods. If the area is at a point that <br />concentrates runoff, the area will be improved to accept this runoff. This would include <br />reshaping the channel and channel bottom, covering with erosion matting, seeding, or rocking. <br />Inlet channel erosion will be controlled down to the average water level of the ponds. Remedial <br />action on pond slopes will extend as far down the slopes as equipment access allows, which at <br />a minimum will be below the level of the principal spillway of each pond. <br />In other areas, depending on the extent of erosion and time of year, the area will be regraded, <br />disked, and seeded as needed. Straw bales, erosion matting, or rock fill may also be used to <br />stabilize the area. Pond 007 will remain for stock use by the landowner. <br />Design Methodology <br />The precipitation runoff (peak flow and volume) is estimated using the Soil Conservation Service <br />(SCS) triangular hydrograph techniques. <br />Design of Small Dams (U.S. Dept. of Interior, 1977). <br />(Revised June 2010) 2.05.3(3) -8 <br />