Mangles Bypass Pipeline


SCH Number
Public Agency
Solano County Water Agency
Document Title
Mangles Bypass Pipeline
Document Type
NOE - Notice of Exemption
Document Description
Protect the water supply along a high risk portion of the PSC, where risk of a rockslide or toppling failure is high. The project consists of a 359-ft. long 66 in. diameter rubber gasket reinforced concrete pipe that will be installed parallel to the PSC. The project will also entail the construction of two check structures in the PSC, as well as inlet and outlet structures connecting the pipe to the PSC. If a rockslide were to occur along the high risk zone of the PSC, water would be able to gravity flow through the bypass pipeline, protecting the water supply for downstream communities such as Vallejo, Benicia, and Green valley.

Contact Information

Mark Snyder
Agency Name
Solano County Water Agency
Contact Types
Lead/Public Agency



Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption
Minor alteration of an existing facility to protect water supply.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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