Primary Sedimentation Tanks Rehabilitation & Equipment Room Electrical Upgrade Project

2 Documents in Project


SCH Number
Public Agency
City of Palo Alto
Document Title
Primary Sedimentation Tanks Rehabilitation & Equipment Room Electrical Upgrade Project
Document Type
NOE - Notice of Exemption
Document Description
The State Water Resources Control Board (State Water Board) is a Responsible Agency for the Project. The State Water Board’s Clean Water State Revolving Fund (SRF) Program is financing the Project. The Project includes rehabilitation of an existing wastewater treatment process unit, primary sedimentation tanks (PSTs) and ancillary systems at the Palo Alto Regional Water Quality Control Plant. The PSTs include four, 46-year old concrete tanks (each measuring 220 feet long by 41 feet wide by 14 feet deep) equipped with mechanical and electrical equipment for wastewater flow control and sludge and scum removal. The Project also includes structural repair of the tank interior walls and ceilings, application of a corrosion resistance coating onto the tank interior surfaces, sludge collection and conveyance system upgrades, and process control instruments and electrical distribution equipment upgrades. To comply with current building and electrical codes and meet federal flood protection elevation requirements, the aging electrical cabinets will be replaced and relocated to an enclosed and elevated pre-engineered structure. An improved area adjacent/southwest of the PST sludge pump room measuring up to 15 feet by 50 feet will be repurposed to house the aforementioned new pre-engineered electrical enclosure.

Contact Information

Kristen Way
Agency Name
State Water Resources Control Board
Contact Types
Responsible Agency


Palo Alto
Santa Clara
Other Location Info
2501 Embarcadero Way, Palo Alto, CA 94303

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption
The Project has been determined to meet the requirements of the exemption selected above and will not have a significant impact on water quality. The Project involves rehabilitation of deteriorated and damaged structures within the existing primary sedimentation tanks and sludge pump room. The Project will involve negligible expansion by installing a 15 by 50 feet pre-engineered electrical enclosure, which will not result in an increase of more than 50 percent of the floor area or 2,500 square feet.
County Clerk
Santa Clara


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