On corner lots, no opaque fence over thirty inches (30") in height above the elevation of the curb shall be placed in the intersection of a triangular area formed by three (3) points as established by (A) the intersection of the flowline at the corner; (B) measuring thirty feet (30') back from this intersection on each flowline; and (C) connecting the two (2) ends of the legs to form a triangle. This triangle area is noted as required to remain clear due to line of sight and pedestrian or vehicular safety concerns. This section shall not require the removal or modification of any fence existing before August 1, 2017; unless substantial changes are made to an area greater than five (5) linear feet, in which case the fence shall become compliant with this chapter. (Ord. 733 §2 (Exh. A), 2017; Amended Ord. 794 §5, 2021)