Ord 2000-022 - Laserfiche WebLink

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(d) The engineering director will monitor stormwater discharges from these activities to evaluate the adequacy of the temporary erosion and sedimentation control measures. The engineering director may require the person performing the activity to use additional controls if the director determines that the controls used by the person are inadequate to protect water quality. Sec. 94.529. Critical water quality zones. (a) A critical water quality zone is established along each minor waterway, intermediate waterway and major waterway in the recharge zone. The area of the zones is as follows: (1) Along a minor waterway, the zone is 100 feet wide, extending 50 feet on each side of the centerline of the waterway. (2) Along an intermediate waterway, the zone is 200 feet wide, extending 100 feet on each side of the centerline of the waterway. (3) Along a major waterway, the zone is 400 feet wide, extending 200 feet on each side ofthe centerline of the waterway. (b) No regulated activity, development, or impervious cover is allowed within a critical water quality zone, except for the following: (1) Arterial, residential and collector street crossings in accordance with the following: (A) Major waterways may be crossed by arterial streets that are a distance of at least 2,000 feet from the nearest adjacent crossing of the waterway by an arterial or collector street. (B) Intermediate waterways may be crossed by arterial and collector streets that are a distance of at least 2,000 feet from the nearest adjacent crossing of the waterway by an arterial or collector street. (C) Minor waterways may be crossed by arterial, collector and residential streets that are a distance of at least 1,000 feet from the nearest adjacent crossing of the waterway by an arterial, collector or residential street. (2) Utility line crossings that are in compliance with all city and TNRCC requirements. (3) Fences that do not obstruct surface water flows. (4) Trails and related facilities, other than buildings, for walking, running, and non- motorized biking. Sec. 94.530. Water quality transition zones. (a) A water quality transition zone is established along eaph minor waterway, intermediate waterway and major waterway in the recharge zone. The area ofthe zones is as follows: (1) Along a minor waterway, the zone is 100 feet wide on each side of the critical water quality zone ofthe waterway. (2) Along an intermediate waterway, the zone is 200 feet wide on each side of the critical water quality zone of the waterway. (3) Along a major waterway, the zone is 300 feet wide on each side of the critical water quality zone of the waterway. (b) Impervious cover is limited to 20% of the area of a site within a water quality transition zone. 16