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of Uses, Section 4. Grading and revegetation is allowed provided <br />that the health of the vegetation in Zone lis not compromise. Zone <br />2 shall begin at the outer edge of Zone 1 and extend landward a <br />minimum of 20 feet as measured horizontally on a line <br />perpendicular to the surface water. The minimum combined width <br />of Zone 1 and Zone 2 shall be 50 feet on all sides of the surface <br />water. <br />C. Diffuse Flow Requirement <br />Diffuse flow of runoff shall be maintained in the riparian buffer by dispersing <br />concentrated flow and reestablishing vegetation. <br />1. Concentrated runoff from new ditches or constructed conveyances <br />shall be converted to diffuse flow before the runoff enters the riparian <br />buffer. <br />2. Periodic corrective action to restore diffuse flow shall be taken if <br />necessary to impede the formation of erosion gullies. <br />Section 4 Table of Uses <br />The following chart sets out the uses and their designation under this Ordinance as <br />exempt, allowable, allowable with mitigation, or prohibited. The requirements for each <br />category are given in Section 4.A. <br />