I-680/SR 4 Interchange Project - Phase 3 - Walnut Creek Birdge (Streambed Alteration Agreement No. 1600-2017-0558-R3)

8 Documents in Project

Summary

SCH Number
2006082017
Lead Agency
Caltrans 4 (Oakland) (California Department of Transportation, District 4)
Document Title
I-680/SR 4 Interchange Project - Phase 3 - Walnut Creek Birdge (Streambed Alteration Agreement No. 1600-2017-0558-R3)
Document Type
NOD - Notice of Determination
Received
Posted
6/14/2018

Document Description
CDFW has executed Lake and Streambed Alteration Agreement No. 1600-2017-0558-R3, pursuant to section 1602 of the Fish and Game Code to the project Applicant, Contra Costa Transportation Authority, as represented by Timothy Haile. Project activities authorized through this Agreement are limited to installation of a temporary cofferdam and associated dewatering, widening the two sections of Walnut Creek Bridge approx. 58 feet, and bridge drainage system modification to accommodate the bridge widening. Modification of the existing east-bound southern section of the bridge will occur in the median and will increase the width of the bridge approx. 28.7 feet. Modification of the existing west-bound northern section of the bridge will occur similarly, in the median and with an increase in width of approx. 28.7 feet. The widened structure will consist of two cast-in-place reinforced concrete box girder decks anchored by four abutments, and supported by sixteen concrete piers mounted on a total of 96 piles.

Contact Information
Jeanette Griffin
CDFW
7329 Silverado Trail
Napa, CA 94559

Phone : (209) 234-3447

Location

Counties
Contra Costa
Cross Streets
at I-680/SR-4 interchange
State Highways
I-680/SR-4
Airports
Buchanan Field
Waterways
Pacheco Slough and Grayson Creek
Other Location Info
City/Nearest Community: Pacheco

Notice of Determination

Approving Agency
CDFW
Approving Agency Role
Responsible Agency
Approved On
Final Environmental Document Available at
7329 Silverado Trail, Napa, CA 94559

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
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
N/A
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No

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 state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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