Ordinance 2213-97 - Laserfiche WebLink

9. Sites that use firefighting foam (AFFF) must construct containment systems for an acceptable ratio of potentially released foam and solution. The acceptable ratio shall be determined by the Responsible Official in consultation with the Department of Ecology and Public Works Department. The solution can then be metered out at a rate that would not impact wastewater treatment plants or aquatic insects. (SEPA Water, Plant and Animal, and Land and Shoreline Use Policies) 10. On sites with a previous history of water quality violations, an analysis of water quality impacts will be required at time of application for any expansions. The City may require additional measures more stringent than contained in the City's Stormwater Management Manual and Design and Construction Standards and Specifications or measures specifically tailored to address the particular site's impacts. (SEPA Water, Plant and Animal, and Land and Shoreline Use Policies) 4.4 Additional Recommended Actions that Would Improve Environmental Conditions in the Subarea The following measures are actions that can be taken by the City or other agencies to improve environmental conditions in the Subarea. These measures would not be required for development of specific project sites. General 1. Retrofit stormwater runoff treatment facilities for road runoff when feasible. Many of the roads constructed in the Subarea in the past, as well as past developments, have not included water quality treatment of stormwater runoff such as wetponds or vegetated swales. All pollutants emitted in these areas wash directly into the stormwater system and streams. The City has standards for retrofitting stormwater treatment facilities on sites where expansion or renovation is occurring. As widening or other reconstruction of roads is proposed in the Subarea, the City and County should evaluate the possibility of adding stormwater treatment facilities to treat road runoff, and retrofit the systems when feasible. (This is often difficult since stormwater treatment was not considered in the design of existing facilities, and stormwater often discharges at many points along a roadway.) The City and County should also continue to monitor the feasibility of new technologies for underground water quality treatment. This design issue must be addressed in future SEPA reviews for transportation improvement projects. Japanese Gulch Basin Mitigation 1. Evaluate the feasibility of improving anadromous fish access. Measures could include retrofitting the Burlington Northern culvert in the lower reach, removing the concrete flume, and restoring the stream channel. 2. The City should complete the update of the City's Drainage Basin Plan for Japanese Gulch. 31