Streambed Alteration Agreement Concerning Unnamed Tributary to Sweetwater River


SCH Number
Public Agency
Fish & Game #5
Document Title
Streambed Alteration Agreement Concerning Unnamed Tributary to Sweetwater River
Document Type
NOE - Notice of Exemption
Document Description
The Operator did alter the stream as an emergency action to install three gabion drop structures designed to control the velocity and erosion within the ephemeral drainage. In addition, a 12-foot-wide access road approximately 585 feet long was constructed along the easterly side of the waterway to facilitate periodic maintenance of the pre-existing downstream detention basin (SAA 5-202-94). The access road included a concrete drainage crossing. Permanent impacts to jurisdictional habitat consists of 0.06 acres of unvegetated stream. In addition, the construction resulted in permanent impacts to 0.15 acres of coastal sage scrub and temporary impacts to less than 0.01 acres of coastal sage scrub. The Operator now proposes to install mitigation for the impacts associated with the emergency action. The Operator shall mitigate for the permanent impacts to 0.06 acres of unvegetated stream at a 2:1 mitigation to impact ratio by restoring 0.12 acres of riparian habitat upstream of the installed gabion structures. Black willow, narrow-leaved willow, and mule fat are the main riparian species to be planted, and an appropriate understory seed mixture applied.

Contact Information

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


Chula Vista
San Diego

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
class 4; sec. 15304
Reasons for Exemption
This project is a minor alteration to land because it involves the installation of 0.12 acres of mitigation consisting of the planting of Black willow, narrow-leaved willow, and mule fat and the application of an appropriate understory seed mixture. This project is a beneficial alteration to land and vegetation.

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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