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thick to protect the river profile from degrading and shall <br />consist of Type L or larger riprap as defined in the USDCM, or <br />a gradation of cobble equivalent to Type L riprap. <br />The minimum maintenance alignment channel is designed to con- <br />trol the 10-year flood. However, all berms will be designed to <br />withstand the 100-year flood without failure during overtop- <br />ping. If a 100-year berm is requested by the Adams County <br />Engineer, then the higher standard shall supersede the recom- <br />mended standard, and all design shall conform accordingly. If <br />the operator chooses to elevate the unprotected riverside berm <br />above the 10-year level, the berm shall be protected in a <br />manner consistent with the protection requirements for a mini- <br />mum maintenance channel alignment for the entire height of the <br />berm. <br />2.2 REVEGETATICN OF BERMS <br />All berms shall be revegetated With native type grasses and vegetation <br />to control soil erosion, to improve aesthetics and to provide habitats <br />for birds and small animals. Revegetation shall be required on all <br />surfaces of the berms that are not protected using the techniques des- <br />cribed in Sections 2.3.1 - Riprap, 2.3.2 - Riprap with Vegetation, <br />2.4.1 - Riprap, 2.4.2 - Riprap with Vegetation and 2.4.3 - Soil <br />Cement. <br />Revegetation shall occur as soon after the construction of the berms <br />as possible. The revegetation shall take place in accordance with the <br />requirements of the District as specified in the Guidelines for Vege- <br />tation. <br />UD6FCD CP.?.VEL GUIDELINES 12/17/87 <br />2-5 <br />