2013 Water System Plan, Volume II - Seattle City Clerk's Office - City ...

5 working days. If an SPU plan reviewer is unable to meet this goal, the reviewer should contact
the plan review supervisor. The SPU plan reviewer follows these steps to prepare a WAI:
1. Checks project type and WAC policy to determine overall requirements.
2. Reviews the City’s GIS to identify the size of the main. If the water system is
substandard, City staff will indicate the process for required mitigation.
3. The WAI informs developer that fire flows are determined by the Fire Department and
may require additional upgrades to water system.
D. Water Availability Approval (WAA)
The Water Availability Approval (WAA) allows a developer to obtain a Building Permit for new
development without obtaining a WAC from SPU. SPU has a MOA with DPD that allows DPD to
issue the WAA in lieu of a WAC for certain smaller projects that will not require increased water
services.
18.4.5.2 Water Plan Review Procedure
SPU PMED may need to perform detailed plan reviews for new development projects that may
impact SPU water infrastructure, examples are water main extensions and large water meter
installations. See DSG Chapter #17 for Water Services.
The Water Plan Review procedure can be required for both private developments within City
limits and within jurisdictions that SPU-owned systems are located.
The following resources may be useful in performing a detailed water plan review:
For new and existing water mains, water project review is covered in the 2007 Water
System Plan.
For non-standard or complex issues or if the code is unclear, get additional
assistance in the bi-weekly water appeal meeting.
Meetings with outside jurisdictions in SPU’s water service area such as Shoreline, Tukwila,
Bellevue, Kirkland, Mercer Island, Burien, Normandy Park, King County, and WSDOT may be
scheduled as needed.
The SPU Primary Reviewer should follow the Drainage, Wastewater and Water Plan Review
procedure in Appendix A.
18.4.6 Drainage and Wastewater Plan Review
This section describes general guidance for reviewing private development wastewater and
drainage plans.
18.4.6.1 Stormwater Code Compliance
The SPU plan reviewer uses a number of established thresholds to determine Stormwater Code
requirements for public and private development or redevelopment projects. There are 13
minimum requirements for all projects.(V.III, Chapter 2, page 2-30) Of these the requirements
to maintain natural drainage patterns, amend soils, implement GSI, protect wetlands, ensure
capacity, and comply with the Side Sewer Code are most often encountered by the reviewer.
18-12
SPU Design Standards and Guidelines