2102 ROSS AVE 2018-01-02 MF Import

13. Temporary erosion control measures for construction activity must be operational prior to commencement of any clearing or earth work. 14. Lack of comment on the attached drainage report does not indicate approval of the report. The City of Everett reviews drainage reports as a part of the construction plan approvals, after the SEPA decision has been issued anc the comment period has expired. However; it has been noted that run off from paved areas is proposed to be collected and discharged to underground infiltration systems, which is not allowed by City standards. 15, A Construction Stormwater General Permit, administered by the Department of Ecology, will be required for this project, if it will disturb an acre or more of land. Additional information as well as an application form can be found on the DOE website at v :jw.ecv.wa.gov/programs/wqlstormwater/construction/. 16. An Industrial Stormwater General Permit to discharge storm water associated with industrial activity may also be required for this project. Again, this permit is administered by the Department of Ecology. Additional information, as well as an application form can be found at www.ecy.wa gov/programslwq/stormwaler/industrial/. 1; an Industrial Stormwater General Permit is not required for this project, or if there will be paved areas on the site that aren't covered by the industrial permit, then the runoff from those areas shall be treated in accordance with City standards. 17. City standards require treatment of storm water runoff from hydraulically -connected pavement prior to discharge of the storm water from the site, or to a stream, wetland, or underground infiltration system. 18. Storm water treatment is required when 5,000 square feet or more of hydraulically -connected pavement is created and/or redeveloped by a project. If suitable soils exist on the site, surface storm water infiltration systems (e.g., pervious pavers or surface ponding areas and/or swales) may be used to avoid creating hydraulically -connected pavement from a storm water treatment standard. From a storm water treatment standpoint, for a paved area to be considered hydraulically -disconnected, storm water runoff from at least the 6-month, 24-hour storm must be fully retained and/or infiltrated. 19. The options for treatment of run off from hydraulically -connected pavement are: a. An infiltration basin with pretreatment', if suitable soils exist on the site b. A wetpond c. A constructed wetland d. A storm water technology that has received a GULD (General Use Level Designation) from the Washington State Department of Ecology for either basic or enhanced treatment, with pretreatment' 'acceptable pretreatment systems are either a wet vault or tank designed in accordance with City standards and containing 30% of the 6-onth, 24-hour storm as dead storage, or a pretreatment system that has obtained a GULD for pretreatment from the Washington State Department of Ecology. All storm water facilities shall be designed in accordance with applicable City standards and/or designed policies.