9931 19TH AVE SE 2018-01-02 MF Import

be those requirements in affect at time of application for Public Works Permits. (SEPA Earth and Water Policies) 4. Treatment of stormwater runoff from paved areas must occur, per City standards, prior to discharge of the stormwater from the site or to a stream or wetland. Stormwater treatment is currently required when 10,000 square feet of pavement is created by a project and three (3) options for stormwater treatment are presented in the current City Standards. The least preferred option is allowed only if the first two options are infeasible in the opinion of the Public Works Department. The options for stormwater treatment are, in order of preference: (SEPA Earth and water Policies) a) an infiltration basin designed and constructed according to City standards, if suitable soils exist on the site; b) a wetpond designed and constructed to City standards; d) a baffle -type oil/water separator followed by a vegetated swale, both designed and constructed according to City standards. 5. Roof top runoff should be discharged to roof downspout infiltration systems, designed and constructed in accordance with City Standards, if suitable soil conditions exist on the site. (SEPA Earth and Water Policies) 6. The presence of wetlands on or adjacent to this site indicate that the soils are not suitable for an infiltration basin; therefore, a wetpond will be required. The preliminary plan indicates that a biofiltration swale will be provided to treat stormwater runoff from paved areas, which is not in accordance with City Standards. The area provided for the swale may or may not be large enough to construct a wetpond which meets City Standards. (SEPA Earth and Water Policies) ?. This site may contain portions of more than one drainage basin. The amount of area in each basin after development should not be greater than the area in each basin before development. (SEPA Earth and Water Policies) The lead agency for this proposal has determined that it does not have a probable significant adverse impact on the environment. An Environmental Impact Statement is not required under RCW 43.21C.030(2)(c). This determination assumes compliance with State law and City ordinances related to general environmental protection including but not limited to right-of-way improvement requirements, drainage, etc. This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. This (�9 2930 Wetmore, Suite 100, Everett, WA 98201 2 (206) 269-8731, Fax (206) 269-8742