R-1355 L-021B MP 8.7 Lower Pipe Gas Line (Notification of Lake or Streambed Alteration, No. EPIMS EPIMS-SON-34667-R3)


SCH Number
Public Agency
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
Document Title
R-1355 L-021B MP 8.7 Lower Pipe Gas Line (Notification of Lake or Streambed Alteration, No. EPIMS EPIMS-SON-34667-R3)
Document Type
NOE - Notice of Exemption
Document Description
The project is limited to the replacement of an existing gas transmission pipeline that spans an unnamed intermittent tributary to Sonoma Creek. The existing pipeline will be removed, and a new pipeline will be installed at a depth of at least six feet underneath the unnamed tributary. Existing support structures on the banks of the channel will be removed by excavating two 8-foot-wide by 8-foot-long by 13-foot-deep holes, one on each side of the unnamed tributary. An excavator will then trench a 72-foot-long by 3-foot-wide by 13-foot-deep trench across the unnamed tributary for the new pipeline. Additionally, a hole on each side of the unnamed tributary will be excavated to tie in the new section of pipeline to the existing pipeline, with one hole measuring 8 feet wide by 12 feet long by 7 feet deep and the other measuring 8 feet wide by 14 feet long by 7 feet deep. Once construction is completed, all the excavated areas will be covered with native material and returned to pre-construction contours. No trees or shrubs will be removed as part of this project. Staging will occur in upland and developed agricultural areas and access will occur along existing roads.

Contact Information

James Hansen
Agency Name
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency


unincorporated area
Northern California, San Francisco Bay Area
Other Location Info
The project is located at an unnamed tributary to Sonoma Creek, approximately 0.25 miles southeast of the intersection of Ramal Road and Masnara Road, in an unincorporated area of the County of Sonoma, State of California; Latitude 38.236914°, Longitude -122.402353°; Assessor’s Parcel Number 135-081-019.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption
Project consists of replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity.
County Clerk


Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

Download CSV New Search Print