Sunol Valley Water Treatment Plant Expansion and Treated Water Reservoir Project
9 Documents in Project
Summary
SCH Number
2007082014
Lead Agency
City and County of San Francisco
Document Title
Sunol Valley Water Treatment Plant Expansion and Treated Water Reservoir Project
Document Type
NOD - Notice of Determination
Received
Posted
11/13/2024
Document Description
The State Water Resources Control Board (State Water Board) is a Responsible Agency for the Project. The Applicant has applied for financial assistance from the State Water Board’s Drinking Water State Revolving Fund (SRF) Program for the Project referred to internally as Sunol Valley Water Treatment Plant Ozonation Facility and Other Site Improvements Project. The Project includes the construction of a new ozonation facility on a 2.7-acre site at the Sunol Valley Water Treatment Plant (SVWTP) to reduce the concentration of taste-and-odor causing compounds in the plant’s raw water; provide additional primary disinfection with ozone; provide additional control of chlorinated disinfection byproducts; improve treatment reliability and provide oxidation of emerging contaminants, and color removal. The new ozonation facilities include: 1) a liquid oxygen and nitrogen facility including three vaporizers, three 15,000-gallon horizontal storage tanks, and one 1,500-gallon storage tank on an approximately 4,000-square-foot concrete foundation, 2) an approximately 9,000-square-foot ozone generation building, 3) an approximately 18,000-square-foot ozone contractor structure, 4) a raw water manifold on an approximately 10,000-sqaure-foot concrete slab, and 5) an approximately 1,500-sqaure-foot calcium thiosulfate facility including a 5,400-gallon storage tank.
Site improvements associated with the ozonation facilities include a new paved access road; five new parking spaces; new yard piping; new sodium hypochlorite and aqua ammonia metering pumps; replacement of three existing washwater recovery pumps with larger-horsepower pumps; replacement and relocation of an 80-foot-high radio tower with a 120-foot radio tower; one 21-kilovolt transformer; replacement of sanitary holding tank, manholes, and piping; installation of stormwater catch basins, manholes, and piping; utility relocations and installation of landscaping and sidewalks; installation of a new emergency backup generator; and a bioswale. The Project also includes electrical equipment upgrades at facilities that deliver power to the SVWTP to ensure that the operation of the ozonation facility does not cause overloads on the Calaveras Substation main transformer.
Contact Information
Name
Sarah Adler
Agency Name
State Water Resources Control Board
Job Title
Environmental Scientist
Contact Types
Responsible Agency
Phone
Location
Cities
Sunol Valley
Counties
Alameda
Regions
San Francisco Bay Area
Cross Streets
Calaveras Road and Interstate 680
Notice of Determination
Approving Agency
State Water Board, Division of Financial Assistance
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Alameda
Final Environmental Document Available at
Project records and an analysis of environmental alternatives for the Project are available to the general public upon request at the State Water Board, Division of Financial Assistance at 1001 I Street, 16th Floor, Sacramento, CA 95814. The Environmental Impact Report is available from the Lead Agency.
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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