Adobe Falls Canyon Emergency Sewer Cleaning & Repairs


SCH Number
Public Agency
City of San Diego
Document Title
Adobe Falls Canyon Emergency Sewer Cleaning & Repairs
Document Type
NOE - Notice of Exemption

Document Description
Emergency cleaning of approximately 1,030 feet of 10-inch diameter vitrified clay pipe. This pipeline flows into the 24-inch diameter Alvarado Trunk Sewer at MH No. 83. Debris, rocks, and root mass deposits in the 10-inch diameter have been found which could be forced into the larger Trunk Sewer line creating a blockage, and causing a sewage overflow. In addition, broken joints, cracks, and pipe sags have been noted in several locations throughout the entire length of the pipe. Construction work will be needed to access approximately 8 manholes along this 50 year old sewer main. Access to more manholes and side canyons may be needed depending upon the results of further cleaning. All access, cleaning and minor maintenance work will be done by City staff and will be monitored by a biologist. This project is outside the Multi-Habitat Planning Area.

Contact Information
Cathy Cibit
City of San Diego
Lead/Public Agency
1222 First Avenue, MS-501
San Diego, CA 92101

Phone : (619) 446-5343


San Diego
San Diego

Notice of Exemption

Exempt Status
Emergency Project
Type, Section or Code
Sec. 15269 (b) and (c)
Reasons for Exemption
This 10-inch diameter, 50 year-old sewer pipeline flows into the 24-inch diameter alvarado Trunk Sewer line at MH No. 83, where debris, rocks and root mass deposits could be deposited from the 10-inch diameter line. This could create a blockage in the 24-inch line causing a sewage overflow. In the event of a spill, a significant amount of flow could reach public waters at Alvarado Creek, which could be spread along several miles of the San Diego River, through highly public-used areas of Mission Valley, before reaching open waters posing a threat to public health and safety.

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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