PGE GasLine 400-401 Freshwater Creek Grout Mattress


SCH Number
Public Agency
Fish & Game #2
Document Title
PGE GasLine 400-401 Freshwater Creek Grout Mattress
Document Type
NOE - Notice of Exemption
Document Description
This project will install a 60-foot wide by 72-foot long Ercoform grout mattress to cover two exposed gas pipelines (G/L 400 and 401) in Freshwater Creek. The mattress will be pre-fabricated to the site specific requirements and rolled out across the creek over G/L 400 and 401. The top edges of the mat will be keyed into the bank, which will require moderate cutting along the tops of both descending banks. Spoil material from the cut areas will either be used a backfill at the top of the banks or placed over exposed G/L 400 in the streambed as fill material prior to the mattress installation process. Once in place, the mattress will be injected with a high-tensile strength grout that flows throughout the mattress and 4 cubic yards of earthen fill.

Contact Information

Kelley Barker
Agency Name
California Department of Fish and Game
Contact Types
Lead/Public Agency



Notice of Exemption

Exempt Status
Statutory Exemption
Type, Section or Code
Reasons for Exemption
This project involves the maintenance, repair and protection of an existing gas pipeline and meets the criteria of the statutory exemption for Pipelines.

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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