Streambed Alteration Agreement Concerning Unnamed Tributary to Soledad Valley Creek


SCH Number
Public Agency
Fish & Game #5
Document Title
Streambed Alteration Agreement Concerning Unnamed Tributary to Soledad Valley Creek
Document Type
NOE - Notice of Exemption
Document Description
The Operator proposes to alter the stream to clean and maintain approximately 25,373 linear feet (4.8 miles) of existing 30-inch, 27-inch, 24-inch, 21-inch, 18-inch, and 15-inch vitrified clay pipe from 74 existing manholes within Carroll Canyon. Work will be accomplished using an all-surface vehicle (ASV) and trailer-mounted bucketing equipment in areas where native habitat has the potential to be impacted. In areas without the potential native habitat impacts, traditional bucketing equipment will be used. Work is to be accomplished only at existing manholes. Equipment access will be obtained from various locations along the sewer alignment. Route alignments will be chosen along existing trails and access roads to the maximum extent possibleand will be selected to minimize damage to biological resources. Minor grading will be required to smooth out uneven areas and widen the temporary access routes to an average 8-foot width to facilitate equipment access. Manholes located within the channel will be permanently armored with rip-rap. Temporary fill material will be required in some locations to facilitate equipment access to manholes, and will be removed when sewer cleaning activities are complete. All work that occurs adjacent to, or in proximity with, native vegetation and wildlife habitat will be monitored by a qualified biological monitor. Following project completion, the biologist will measure all project impacts using a global positioning system and will report final project impacts in a letter biological resources report and impact analysis. Native riparian habitats found on site include: sycamore willow woodland, mulefat scrub, southern willow scrub, and open water.

Contact Information

Kelly Fisher
Agency Name
Department of Fish and Game, Region 5
Contact Types
Lead/Public Agency


San Diego
San Diego

Notice of Exemption

Exempt Status
Emergency Project
Type, Section or Code
Reasons for Exemption
This 33-year old, 18 to 30 inch diameter sewer pipeline shows severe dteriorated conditions including but not limited to heavy root intrusion, corrosion and infiltration, debris and rock in the line, and a break. Several sewer overflows have been noted in 1995, 1998, 1999. The average daily flow through this sewer line is approximately 6.07 million gallons per day (mgd) and the peak flow is 8.59 mgd. In the event of a spill, a significant amount of sewage could reach public waters at Penasquitos Lagoon and the Pacific Ocean, threatening wild life habitat and 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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