Cotati No.1 and Kastania Water Storage Tank Recoating Project


SCH Number
Public Agency
Sonoma County Water Agency
Document Title
Cotati No.1 and Kastania Water Storage Tank Recoating Project
Document Type
NOE - Notice of Exemption
Document Description
The project consists of actions to meet current health and safety standards for ongoing operations and maintenance activities of existing water storage facilities. The purpose of the project is to maintain the service life of the existing potable water storage tanks and maintain existing water quality-related appurtenances designed to protect public drinking water sources from contamination. The actions generally consist of repairing corroded structural steel features within the water storage tanks, installing lateral bracing, applying a 100 percent solids coating to the storage tank interiors, painting the exteriors with epoxy/urethane, and installing a new cathodic protection system for long-term corrosion prevention. Water quality-related actions include the repair and replacement of screened vents and overflow pipes to protect against intrusion of animals and the back-flow of contaminated air. Health and safety improvements consist of replacing the roof fall restraint systems and guardrail extensions, repositioning of ladders to meet Occupational Safety and Health Administration (OSHA) requirements, and installing ladder climbing fall arrest systems for ongoing maintenance activities.

Contact Information

Jeff Church
Agency Name
Sonoma County Water Agency
Job Title
Senior Environmental Specialist
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project


Cotati, Petaluma
Cross Streets
West Sierra Avenue and Kastania Road
Total Acres
State Highways
Highway 101 and Highway 116
Thomas Page Academy, Technology High School, Technology Middle S
Laguna de Santa Rosa, Petaluma River
Other Location Info
The project sites are located at the Cotati potable water storage facility located at 1380 West Sierra Avenue in Cotati, and the Kastania potable water storage facility located at 4100 Kastania Road in Petaluma.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301(b): Existing Facilities, 15304(f): Minor Alterations to Land.
Reasons for Exemption
The maintenance project consists of minor alterations of existing water storage tanks and minor alterations to land that do not result in expansion of existing uses or removal of healthy, mature or scenic trees.
County Clerk


Notice of Exemption

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