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that the health of the vegetation in Zone 1 is 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 manmade conveyances shale <br /> be converted to diffuse flow before the runoff enters the riparian 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 /> III <br /> 18 <br /> I <br />