Director's Rule

Title

Flow Control Requirements for Projects in Identified Public Combined Sewer Basins Number

DWW-430.1 Rev. no.

1

Responsibility

Drainage and Wastewater Line of Business Supersedes

N/A Pages

1

SPU General Manager/CEO's Approval

Mami Hara Effective Date

January 1, 2017

1. PURPOSE

To identify public combined sewer basins where the General Manager/CEO of Seattle Public Utilities has determined that the public combined sewers have sufficient capacity to carry existing and anticipated loads.

2. DEFINITIONS

See Seattle Municipal Code (SMC) Chapter 22.801.

3. RULE

Under SMC 22.805.050.C.5 and SMC 22.805.060.C.5, the General Manager/CEO of SPU has determined that in the public combined sewer basins identified in the attached Exhibit A as SODO/Waterfront Basin, the public combined sewer has sufficient capacity to carry existing and anticipated loads. Therefore, parcel-based or roadway projects discharging into that portion of the identified public combined sewer basins are not required to provide peak flow control as stated in SMC 22.805.050.C.5 and SMC 22.805.060.C.5. The projects shall meet the other minimum requirements for flow control contained in Section 22.805.050.C.5 and Section 22.805.060.C.5, as applicable.

4. AUTHORITY/REFERENCES

SMC 22.805.050.C.5, Discharges to Public Combined SewerParcel-based projects.

SMC 22.805.060.C.5, Discharges to Public Combined SewerRoadway projects.

SMC 22.805.080, Minimum Requirements for Flow Control