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~~ Improved Channel. If it 1s determined that topography of the regraded area is such [ha[ drainage is concentrated into a particular area, drainage control will be improved. The drainage bottom or channel will be reshaped, if needed. This will be done with either a motor grader or dozer, making [he channel in the shape of a V that is approximately 16 feet to 20 feet wide. The channel bottom will either be seeded, covered with erosion matting and seeded, or rocked. The method used will depend on site conditions. Continued observations will be made of this area for additional problems or necessary maintenance. No Defined Channel. On a slope where there is no Swale or defined channel, a number of operations will be performed, depending on the extent of the erosion. The area will he dis M.ed on the contou[ or erosion matting will be placed on the area, depending again on site characteristics. Reseeding wi1L then take place. In addition to the above, contour furrows in and above the erosion area may be roost tutted to Sntercepi and slow down the runoff or Co channel flows. Straw dikes will also be used where appropriate to control runoff and promote vegetation. Other Methods. If tort ective meas utes described under "No Defined Channel" fail, further observation will be necessary to develop additional measures. A combination of the first two described methods • or some variation will then be applied. Methods may include rock channels, contour furrows, or laterals with rock or matting lined bottoms, V dittoes made with a dozer or motor grader, and met nods described above to reestablish vegetation. Head Cutting Stabilization. Head cutting will be controlled using several varying methods. If the area is at a point that concentrates runoff, the area will be improved to accept the runoff. This would include reshaping the channel and channel bottom, seeding, and covering the channel with erosion matting or rock. In other areas, depending on the extent of erosion and time of year, dlski ng and seeding will be conducted as req ulred. Straw bales, erosion mat[1 ng and rock fill may also be used to stabilize the area. Straw mulching and crimping wi 11 be considered as a further optton. Peabody will submit to the Division by June 1 of each yea[, a copy of the map identifying the rill antl gully areas along with a rill and gully stabilization plan that briefly describes the problem at each rden[Sfied area antl the proposed mitigative measures. The rill and gully stabilization plan will be implemented Dy July 1 oC each year and completed by November 1 or until weather conditions restrict operations. .3-31 Revised CIl15/33