Alamo Check Drainage Project


SCH Number
Lead Agency
Solano County Water Agency
Document Title
Alamo Check Drainage Project
Document Type
NOE - Notice of Exemption

Document Description
The project proposes a rehabilitation to eliminate the ponding and reinstate positive drainage flow away from the properties. A key component of this project is to install an 8-12 inch outfall with a flap gate to a drainage ditch, which empties to Alamo Creek, immediately to the North of the Putah South Canal. The proposed project is only intended to improve drainage issues from routine storm events and will have no adverse impact during larger storm events. The drainage flows from the property are estimated to be 0.3 and 0.4 cubic feet per second for a 10 year and 25 year event, respectively. The velocity through an 8" pipe for the higher flow is approximately 1 ft/sec. The pipe will discharge onto existing rock slope protection. The flap gate will only allow the pipe to discharge when there is capacity in the channel.

Contact Information
Chris Lee
Solano County Water Agency
P.O. Box 349
Elmira, CA 95625

Phone : (707) 455-1105



Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Section 15304
Reasons for Exemption
The activity is exempt from CEQA because it proposes only minor alterations to land.

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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