Environmental Review 

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The Conservancy is often times the Lead Agency for Participating Special Entity projects. Being the Lead Agency means overseeing the environmental review process for all projects requiring a decision to be made at the discretion of the Conservancy's Governing Board. The California Environmental Quality Act (CEQA) is the environmental review process and provides a means to inform decision-makers about potential environmental impacts that would result from a project.

Date of Board Action  Project Summary of Project CEQA Notice
December 20, 2021 P66 Line 200 Anomaly Investigation and Repair - Winter 2022 Project Phillips 66 Pipeline, LLC (Phillips 66) is proposing to conduct anomaly investigation and repairs at three dig locations to address a total of four anomalies along the existing Line 200 Mainline trunk pipeline in eastern Contra Costa County.  NOE - P66 Winter 2022 Project (PDF)
July 13, 2021 PG&E T-1527 and T-1528 Hydrostatic Strength Test Project PG&E is planning to conduct pipeline hydrostatic testing and pipeline improvements on Gas Line 131 for test segments T-1527 and T-1528 between Mile Posts 17.55 and 20.98 in Contra Costa County. The northern end of the project lies just within the southern limit of the City of Brentwood and is in Marsh Creek State Historic Park, and the remainder of the project is in unincorporated Contra Costa County.  NOE - PG&E T-1527 and T-1528 Hydrostatic Strength Test Project (PDF)
June 28, 2021 Marsh Creek Restoration and Instream Dam Improvement Project Improvements include cutting and removing four large sections of the concrete dam, filling and reshaping the eroded plunge pool and adjacent northern upstream (west of the dam) and northern downstream (east of the dam) banks to focus streamflow back towards the centerline of the stream channel and through the newly cut dam sections. The southern bank on the downstream side of the dam would be filled with soil and reinforced to protect archaeological/cultural resources. The rebuilt and reshaped banks would be lined with rock and riparian plantings to armor the newly restored banks. NOD - Marsh Creek Restoration and Instream Dam Improvement Project (PDF)
April 26, 2021 P66 Line 200 Anomaly Investigation and Repair - Summer 2021 Project Phillips 66 Pipeline, LLC (Phillips 66) is proposing to conduct anomaly investigation and repairs at six dig locations (Digs) to address a total of nine anomalies along the existing Line 200 Mainline trunk pipeline in eastern Contra Costa County.  NOE - P66 Summer 2021 Project (PDF)
February 22, 2021 P66 Line 200 Anomaly Investigation and Repair - Spring 2021 Project Phillips 66 Pipeline, LLC (P66) is proposing to conduct anomaly investigation and repairs at one distinct dig locations to address one anomaly along the existing Line 200 Mainline trunk pipeline in eastern Contra Costa County.  NOE - P66 Spring 2021 Project (PDF)
January 8, 2021 PG&E Transmission Pipeline L-114 Replacement Project Involves the installation of a new 2,000-foot-long, 24-inch-diameter natural gas  transmission pipeline to replace an existing 22-inch natural gas pipeline. The existing natural gas pipeline replacement is required under PG&E's Integrity Management’s Vintage Pipe Replacement Program. The existing pipeline that was constructed in 1942 would be retired in place. NOD - PG&E L-114 Replacement Project (PDF)