1815 13TH ST SEATTLE CHILDRENS NORTH CLINIC 2019-07-08

MAGNUSSON KLEMENCIC ASSOCIATES ■ Permit Description Applicability R.1 Industrial Stormwater Permits Does not apply R.2 Construction Stormwater Permits Does not apply* R.3 Endangered Species Act Does not apply R.4 Section 401 Water Quality Certifications Does not apply R.5 Hydraulic Project Approvals Does not apply R.6 Aquatic Land Use Authorizations Does not apply R.7 Basin Planning/TMDLs Does not apply** R.8 Underground Injection Control Authorizations Does not apply R.9 Discharge of Process Wastewaters Directly to Surface Waters Does not apply R.10 Dangerous (hazardous) Waster Generators Does not apply R.11 Minimum Functional Standards for Containers Does not apply R.12 Underground and Above-ground Storage Tank Requirements Does not apply R.13 Emergency Spill Prevention Control and Cleanup Requirements Does not apply R.14 Pesticide Regulations Does not apply R.15 Air Quality Regulations Does not apply R.16 Uniform Fire Code Requirements Does not apply * See Section IV, Construction Stormwater Pollution Prevention Plan. ** Not applicable because the project discharges to the existing public combined sewer system. VIII. PERMANENT STORMWATER CONTROL PLAN As noted above in I, Project Description, this report will address the flow control and conveyance requirements for both the North Site development and the future clinic facility. Area take-offs, calculations, and results discussed below under subsections Developed Hydrology, Stormwater Flow Control Plan, and Conveyance Analysis reflect this approach. OFF-SITE ANALYSIS The North Site project proposes to discharge stormwater to the existing public combined sewer system near the site's existing discharge location to the same system in 12th Street. The existing public combined Storm Drainage Report 8 Providence Regional Medical Center Everett North Site, Everett, Washington