Pipeline 5 Rejection Tower Rehabilitation (Q0332)


SCH Number
Lead Agency
San Diego County Water Authority
Document Title
Pipeline 5 Rejection Tower Rehabilitation (Q0332)
Document Type
NOE - Notice of Exemption

Document Description
The project consists of the rehabilitation of an existing aqueduct appurtenant structure. The tower is a 61-foot-tall 74-inch diameter vent surrounded by a 67-foot-tall 122-inch diameter containment pipe; both constructed of cement mortar lined and coated welded steel. A condition assessment revealed delaminated and spalled cement mortar coating on the steel vent and coating debris at the bottom of the containment pipe. This project is to remove the remaining delaminated cement mortar coating from the vent during an aqueduct shutdown to prevent the coating debris from damaging downstream aqueduct facilities.

Contact Information
Mark Tegio
San Diego County Water Authority
4677 Overland Ave.
San Diego, CA 92123

Phone : (858) 522-6753


San Diego
Cross Streets
3566 North Twin Oaks Valley Road
Other Location Info
located in the unincorporated area near the Twin Oaks Valley Water Treatment Plant

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 1-S: 15301
Reasons for Exemption
The project is the maintenance of existing public water facilities, within the existing structure, with no expansion of use.


Notice of Exemption
2019060192   PDF 1379 K

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