Emergency Repair to the San Diego County Water Authority's Second Aqueduct Pipeline 4

1 Documents in Project


SCH Number
Lead Agency
10th District Agricultural Association (10th District Agricultural Association, Siskiyou Golden Fair)
Document Title
Emergency Repair to the San Diego County Water Authority's Second Aqueduct Pipeline 4
Document Type
NOE - Notice of Exemption
Project Applicant
San Diego County Water Authority

Document Description
Water Authority staff discovered Pipeline 4 to be leaking within Moosa Creek. The Water Authority's second aqueduct, which contains Pipelines 3, 4 and 5, runs through this area. In addition, Rainbow Municipal Water District has a pipeline in the immediate area. Catastrophic failure of Pipeline 4 could result in considerable environmental damage and potentially risks damage to Pipelines 3 and 5, and Rainbow's pipeline. Pipeline 4 is a vital component of the Water Authority's treated water system and delivers treated water from the MWD delivery point down to Lower Otay Reservoir. Pipeline 4 is supplied by MWD's Skinner Water Treatment Plant, Twin Oaks Valley Water Treatment Plant, and the Carlsbad Desalination Plant. Failure of Pipeline 4 would significantly impact the Water Authority's ability to provide treated water service to all its member agencies and could result in mandatory water restrictions. Because of the very high operating pressure of the pipeline in this area and consequences of failure, an emergency has been declared in accordance with SDCW A Administrative Code, to immediately begin the work planning, shutdown and repair of Pipeline 4 to mitigate the present risks and prevent further loss.

Contact Information
Mark Tegio, Sr, Water
San Diego County Water Authority
4677 Overland Avenue
San Diego, CA 92123-1233

Phone : (858) 522-6753


San Diego
Other Location Info
Within the Water Authority's Second Aqueduct within Moosa Creek adjacent north of Camino del Rey approximately 2,000 feet west of Interstate 15

Notice of Exemption

Exempt Status
Emergency Project
Type, Section or Code
Sec. 21080(b)(4); 15269(b)(c)
Reasons for Exemption
The subject actions consist of emergency repairs and modifications to public water facilities which are necessary to maintain service essential to the public health safety and welfare.


Notice of Exemption
2019080352   PDF 97 K

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