Centennial Creek Mitigation Project

23 Documents in Project

Summary

SCH Number
2000011033
Lead Agency
California Department of Transportation, District 5 (DOT)
Document Title
Centennial Creek Mitigation Project
Document Type
NOD - Notice of Determination
Received
Posted
10/20/2021
Document Description
Construction of the Route 46 Corridor Improvement Project has impacted wetlands and other waters in the Union, Whitley 2A, Whitley 2B, and future Cholame section. Onsite mitigation is maximized within the Caltrans right-of-way; however, additional acreage is required by jurisdictional agencies but cannot be accommodated onsite. The remaining acreage of offsite mitigation requirements for the Union segment consists of approximately 0.474 acre of wetlands creation and enhancement, while the Whitley 2A and Whitley 2B segments and Cholame section require approximately 3.292 acres of other waters creation, enhancement, and re-establishment. The Centennial Creek Mitigation Project intends to improve hydrology and function of the creek by removing and/or replacing undersized culverts, removing hardscaping and debris, and engineering roughened riffles (shallow portions of the creek with large rocks placed to form natural habitat) at intervals along the system to encourage aggradation and reestablishment of a riffle/pool system. The total area proposed for mitigation is approximately 4.14 acres, which includes 0.53 acres of wetlands creation and enhancement, as well as 3.61 acres of other waters creation, enhancement, and reestablishment. Restoration will occur along 6,300 linear feet of Centennial Creek. The improvements to the infrastructure will be followed by over two acres of planting a variety of native species to create vegetation structure and increase plant diversity and habitat quality. A plant establishment period will be for 3 years, followed by a monitoring period of 7 years, for a total of 10 years after planting to successfully meet agency success criteria.

Contact Information

Name
Jason Wilkinson
Agency Name
Caltrans
Contact Types
Lead/Public Agency

Location

Cities
Paso Robles
Counties
San Luis Obispo
Cross Streets
Lana Street, Nickerson Drive, Mohawk Court
Zip
93446
Total Acres
4.14
Parcel #
009-562-064 009-561-050 009-567-014 009-561-051 009-614-017 009-697-029 009-690-016 009-514-049

Notice of Determination

Approving Agency
California Department of Transportation
Approving Agency Role
Lead Agency
Approved On

Determinations

(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
No
(4) A mitigation reporting or monitoring plan was adopted for this project
No
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No

Attachments

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