Ordinance 3168-10 - Laserfiche WebLink

To the extent permitted by law, performance bonding, or other appropriate financial instruments acceptable to the City, shall be required for all projects to ensure compliance with the approved erosion and sediment control plan. (5) MINIMUM REQUIREMENT#2: PRESERVATION OF NATURAL DRAINAGE SYSTEMS Natural drainage patterns shall be maintained, and discharges from the site shall occur at natural location. (6) MINIMUM REQUIREMENT#3: SOURCE CONTROL OF POLLUTION Source control BMPs shall be applied to all projects to the maximum extent feasible. Source control BMPs shall be selected, designed, and maintained according to the City of Everett Stormwater Management Manual. An adopted and implemented basin plan(Minimum Requirement#9) may be used to develop source control requirements that are tailored to a specific basin, however, in all circumstances, source control BMPs shall be required for all sites. (7) MINIMUM REQUIREMENT#4: RUNOFF TREATMENT BMPs All projects creating five thousand (5,000) square feet or more of net additional pavement shall provide treatment of stormwater. Treatment BMPs shall be sized to capture and treat the water quality design storm, defined as the 6-month, 24-hour return period storm. The first priority for treatment shall be to infiltrate as much as possible of the water quality design storm, only if site conditions are appropriate and ground water quality will not be impaired. Direct discharge of untreated stormwater to ground water is prohibited. All treatment BMPs shall be selected, designed, and maintained according to the City of Everett's Stormwater Management Manual. Stormwater treatment 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. 18