SCH Number 2000011033


Project Info

Title
Centennial Creek Mitigation Project
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.
Download CSV New Search

 

23 documents in project

Type Lead/Public Agency Received Title
California Department of Transportation, District 5 (DOT) Centennial Creek Mitigation Project
California Department of Transportation, District 5 (DOT) Centennial Creek Mitigation Project
California Department of Transportation, District 5 (DOT) Centennial Creek Mitigation Project
California Department of Transportation, District 5 (DOT) State Route 46 Corridor Improvement Project (California Endangered Species Act Incidental Take Permit No. 2081 2007 020 04 (ITP)), Major Amendment No. 1
California Department of Transportation, District 5 (DOT) State Route 46 Corridor Improvement Project – Cholame Section (Streambed Alteration Agreement No. 1600 2020-0139-R4)
California Department of Transportation, District 5 (DOT) Route 46 Corridor Improvement Project
California Department of Transportation, District 5 (DOT) Route 46 Corridor Improvement Project - Cholame Section
California Department of Transportation, District 5 (DOT) Cholame Section of the Route 46 Corridor Improvement Project
California Department of Transportation, District 5 SLO-46--Corridor Improvement Project -- Whitley 2B EA 05-33078 (Lake or Streambed Alteration Agreement No. 1600-2015-0045-R4)
California Department of Transportation, District 5 SLO-46--Corridor Improvement Project -- Whitley 2B EA 05-33078 (Lake or Streambed Alteration Agreement No. 1600-2015-0045-R4)
California Department of Transportation, District 5 SLO-46--Corridor Improvement -- Utility Relocation Project EA 05-33078; Streambed Alteration Agreement No. 1600-2014-0218-R4
California Department of Transportation, District 5 State Route 46 -- Corridor Improvement Project Phase 3; Amendment to Streambed Alteration Agreement No. 1600-2011-0206-R4
California Department of Transportation, District 5 State Route 46 - Corridor Improvement Project Phase 3 - Agreement 2011-0206-R4
California Department of Transportation, District 5 State Route 46 - Corridor Improvement Project Phase 3 - Agreement 2011-0206-R4
California Department of Transportation, District 5 State Route 46 - Corridor Improvement Project Phase II - Agreement No. 2009-0149-R4
California Department of Transportation, District 5 Route 46 Corridor Improvement Project (Issuance of California Endangered Species Act Incidental Take Permit 2081-2007-020-04)
California Department of Transportation, District 5 State Route 46 Estrella River Test Boring Project - Agreement 2008-0017-R4
California Department of Transportation, District 5 SR 46 Corridor Improvement Project - Agreement 2007-0029-R4
California Department of Transportation, District 5 Route 46 - Corridor Improvement Project
California Department of Transportation, District 5 05-SLO-46 KP 51.8/90.6 (PM 32.2/56.3) Route 46 Corridor Improvement Project
California Department of Transportation, District 5 Highway 46 Four Lane Project
California Department of Transportation, District 5 05-SLO-46 KP 51.8/90.6 (PM 32.2/56.3) Route 46 Corridor Improvement Project
California Department of Transportation, District 5 Highway 46 Four Lane Project