Ordinance 3168-10 - Laserfiche WebLink

locations shall be evaluated, and natural water storage and infiltration opportunities outside the wetlands shall be maximized. b. Created wetlands that are intended to mitigate for loss of wetland acreage, functions, and values shall not be designed to also treat or store stormwater. c. In order for constructed wetlands to be considered treatment systems, they must be constructed on sites that are not wetlands and they must be managed for stormwater treatment. If these systems are not managed and maintained in accordance with the City of Everett Stormwater Manual for a period exceeding three years, these systems may no longer be considered constructed wetlands. Discharges from constructed wetlands to waters of the State (including discharges to natural wetlands) are regulated under Chapter 90.48 RCW, Chapter 173-201 WAC, and Chapter 173-200 WAC. d. Stormwater control BMPs shall not be built within Environmentally Sensitive Areas or their required buffers (except as allowed in the City's Zoning Code), except for necessary conveyance systems as approved by the City. e. Stormwater discharges to wetlands must be controlled and treated to the extent necessary to meet State Water Quality Standards, Chapter 173-201 WAC or Groundwater Quality Standards, Chapter 173-200 WAC, as appropriate. An adopted and implemented basin plan(Minimum Requirement#9) may be used to develop requirements for wetlands that are tailored to a specific basin. (10) MINIMUM REQUIREMENT#7: WATER QUALITY SENSITVIE AREAS Where the City determines that the Minimum Technical Requirements in Section 3 do not provide adequate protection of water quality sensitive areas, either on- site or within the basin, more stringent controls shall be required to protect water quality. Stormwater control BMPs shall not be built within Environmentally Sensitive Areas or their required buffers (except as allowed in the City's Zoning Code), except for necessary conveyance systems as approved by the City. 20