Southern First Aqueduct Structures Rehabilitation Project


SCH Number
Public Agency
San Diego County Water Authority
Document Title
Southern First Aqueduct Structures Rehabilitation Project
Document Type
NOE - Notice of Exemption
Document Description
The project would entail rehabilitation, maintenance, replacement, and abandonment of existing pipeline facilities along an approximately 21-mile stretch of the First Aqueduct. The Water Authority performed a condition assessment of the existing concrete pipeline structures and mechanical equipment in 2015. Based on this assessment, 110 facilities in this southern reach of the First Aqueduct (from south of the Hubbard Hill overflow to the San Vicente Reservoir Tunnel) were identified for rehabilitation or abandonment, consisting of 54 structures on Pipeline 1 (P1) and 56 structures on Pipeline 2 (P2). Rehabilitation or replacement would include geotechnical investigation and work on concrete vaults, structure tops and entry hatches, floors, valves, pipeline nozzles, ventilation features, piping, and ladders. Where needed, existing maintenance aprons around existing structures would be improved by minor regrading; addition of gravel base and rip-rap.

Contact Information

Sean Paver
Agency Name
San Diego County Water Authority
Contact Types
Lead/Public Agency


Escondido, Poway, San Diego
San Diego
Countywide, Southern California
Cross Streets
East of I-15
Other Location Info
Multiple sites along the Water Authority’s First Aqueduct located east of Interstate 15, from the City of Escondido in the north to Slaughterhouse Canyon west of the San Vicente Reservoir in the south.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301 and 15302
Reasons for Exemption
The work activities consist of rehabilitation, maintenance, replacement, abandonment, and minor alterations of existing public facilities, involving negligible or no expansion of use beyond that existing at the time this notice was executed. Maintenance and replacement of existing facilities is specifically categorically exempted from CEQA per the Water Authority's Administrative Code implementing CEQA [§8.00.060(a)1(i); §8.00.060(a)2(i)].
County Clerk
San Diego


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