Union Sanitary District Primary Clarifier Nos. 1-4 Rehabilitation Project

2 Documents in Project


SCH Number
Public Agency
Union Sanitary District
Document Title
Union Sanitary District Primary Clarifier Nos. 1-4 Rehabilitation Project
Document Type
NOE - Notice of Exemption
Document Description
The Union Sanitary District's (USD's) Alvarado Wastewater Treatment Plant provides wastewater treatment for the residents and businesses of southern Alameda County, California. The plant's treatment train has two sets of primary clarifier nos. 1 to 4 in one building, and primary clarifer nos. 5 and 6 in a second building. Primary clarifier nos 1 to 4 were constructed in 1978 and include the original mechanisms and appurtenances, which have served well over the past 30 years. However, the structure and mechanisms inside the claifier building have worn and corroded over time, and USD is now concerned about the condition of the clarifiers, which must remain in service to meet treatment needs.

Contact Information

Raymond Chau
Agency Name
Union Sanitary District
Contact Types
Lead/Public Agency


Union City

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301, Class 1
Reasons for Exemption
Repair and rehabilitation of existing sewarage facilities.

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 state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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