SFPUC Southeast Outfall Diffuser Repair Project
Summary
SCH Number
2026070396
Public Agency
California Regional Water Quality Control Board, San Francisco Bay Region 2
(RWQCB)
Document Title
SFPUC Southeast Outfall Diffuser Repair Project
Document Type
NOE - Notice of Exemption
Received
Posted
7/10/2026
Document Description
The Project is located along an outfall diffuser under Pier 80 at the Port of San Francisco and extends into San Francisco Bay (Bay), City and County of San Francisco (Lat. 37.749618; Long. -122.373471). The Permittee will perform maintenance repairs for the associated outfall diffuser pipes at the Southeast Bay Outfall (SEO), which is the primary discharge outfall for treated effluent from the Southeast Water Pollution Control Plant (Southeast Plant). The Permittee operates and maintains San Francisco's combined sewer system, which collects and treats both sewage and stormwater. The Southeast Plant is one of San Francisco’s three treatment facilities, in addition to the Oceanside Water Pollution Control Plant and the Northpoint Wet-Weather Facility. The Southeast Plant has a wet-weather treatment capacity of 100 million gallons per day for primary treated effluent and 150 million gallons per day for secondary treated effluent. During dry weather, all effluent receives secondary treatment, and the effluent is discharged to the Bay via the SEO system. To fully restore the SEO system functions, the Permittee will remove overlying sediment and rip rap covering portions of the outfall and diffuser pipes at the end of the SEO and repair damage to diffusers or replace missing diffusers. The SEO operates under a National Pollutant Discharge Elimination System (NPDES) permit, adopted by the San Francisco Bay Regional Water Quality Control Board (RWQCB) in August 2013 (Order No. R2-2013-0029).
Contact Information
Name
Nathaniel Goetz
Agency Name
California Regional Water Quality Control Board, San Francisco Bay Region 2
Job Title
Water Resource Control Engineer
Contact Types
Lead/Public Agency
Address
Phone
Location
Coordinates
Cities
San Francisco
Counties
San Francisco
Regions
San Francisco Bay Area
Other Information
offshore Pier 80
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 1; Section 15301(d) - Existing Facilities; restoration or rehabilitation of deteriorated or damaged structures
Reasons for Exemption
This project involves mostly temporary impacts (permanent impacts are less than 0.01 acres) that will be mitigated with best management practices and in conformance with a Water Quality Monitoring Plan regulated by the San Francisco Bay Regional Water Quality Control Board.