Shortcut Pipeline Phase 3 Improvement Project Amendment (Lake or Streambed Alteration Agreement No. EPIMS-CCA-44206-R3)
7 Documents in Project
Summary
SCH Number
2011092059
Lead Agency
Contra Costa Water District
Document Title
Shortcut Pipeline Phase 3 Improvement Project Amendment (Lake or Streambed Alteration Agreement No. EPIMS-CCA-44206-R3)
Document Type
NOD - Notice of Determination
Received
Posted
11/17/2025
Document Description
The California Department of Fish and Wildlife (CDFW) has executed an amendment to Lake and Streambed Alteration Agreement (EPIMS-CCA-44206-R3), pursuant to Fish and Game Code section 1602, to the project Applicant, Contra Costa Water District.
The project is limited to measures to minimize golden mussel introduction into Walnut Creek or Pacheco Creek from discharge of untreated water by one or a combination of the following methods: percolation/desiccation of discharged water, discharging water into the Contra Costa Water Sanitation Sewer system, chlorination of the discharged water, and/or having all discharged water be filtered to capture golden mussel. Additionally, the amendment includes a golden mussel monitoring plan to identify species presence at monitoring locations along Walnut Creek and Pacheco Creek.
Contact Information
Name
Mia Bianchi
Agency Name
CA Department of Fish and Wildlife
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Responsible Agency
Phone
Email
Name
Mark Seedall
Agency Name
Contra Costa Water District
Job Title
Lead Agency Contact
Contact Types
Lead/Public Agency
Address
Phone
Email
Location
Coordinates
Cities
Martinez
Counties
Contra Costa
Regions
San Francisco Bay Area
Parcel #
159-250-019-0
Other Location Info
The project is located at Walnut Creek between the western side of the Marathon refinery and the Conco Industrial site development, in the City of Martinez, in the County of Contra Costa, State of California; approximate center is Latitude 38.019922 N, Longitude -122.075150 W; Assessor’s Parcel Number 159-250-019-0.
Notice of Determination
Approving Agency
CA Department of Fish and Wildlife
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Contra Costa
Final Environmental Document Available at
The Final Mitigated Negative Declaration (Supplement) prepared for the project is available to the general public at the office location listed above for the Lead Agency. CDFW’s record of project approval as a Responsible Agency is available at CDFW’s regional office.
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
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
Notice of Determination
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