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If it is determined that the topography ofthe regraded area is such that drainage is concentrated <br />in a particular area, then this area will be improved to accept the runoff. In areas where no <br />natural armoring is present, the drainage bottom or channel will be reshaped, if needed. The <br />channel bottom will either be seeded, covered with erosion matting and seeded, or rocked. The <br />method used will, of course, depend on site conditions. Continued observations will be made <br />of this area for problems or necessary maintenance. <br />On slopes where no Swale or defined channel exists, regrading, or disking, or chisel plowing <br />will be performed, depending on the extent of the erosion. Reseeding will then take place. <br />In addition to the above, contour furrows in and above the erosion area may be constructed to <br />trap and slow down the runoff. Straw dikes can also be used where appropriate to control <br />runoff and promote revegetation. <br />If corrective measures described above fail, WFC proposes to observe and reevaluate the situation. <br />A combination of the first two methods described or some variation therein will be applied. These <br />activities can include, but are not limited to, rock channels, contour furrows or laterals with rock or <br />matting bottoms, V ditches made with the dozer or motor grader, and 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 reshaping the <br />channel and channel bottom, covering with erosion matting, seeding, or rocking. Inlet channel erosion <br />will be controlled down to the average water level of the ponds. Remedial action on pond slopes will <br />extend as far down the slopes as equipment access allows, which at a minimum will be below the level <br />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, disked, <br />and seeded as needed. Straw bales, erosion matting, or rock fill may also be used to stabilize the area. <br />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 (SCS) <br />triangular hydrograph techniques. <br />2.05.3(3) - 8 <br /><~ J <br />