Threemile Slough Pipeline Crossings Remediation and Decommissioning Project

The Commission, as the lead agency under the California Environmental Quality Act, released a draft Mitigated Negative Declaration for public comment on June 19, 2026. The project includes remediation of two active gas pipelines in the bed of Threemile Slough, and removal of two inactive gas pipelines within the bed and banks of Threemile Slough. Public comments are due by Thursday, July 23, 2026, at 5:00 p.m. Public comments can be sent electronically to CEQA.comments@slc.ca.gov. More information about how to comment is in the Notice of Intent

Abbreviations

CEQA = California Environmental Quality Act
EA = Environmental Assessment
EIR = Environmental Impact Report
EIS = Environmental Impact Statement
FONSI = Finding of No Significant Impact
IS = Initial Study
MND = Mitigated Negative Declaration
ND = Negative Declaration
NEPA = National Environmental Policy Act
NOI = Notice of Intent
NOP = Notice of Preparation
SEIR = Supplemental Environmental Impact Report

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Contact

Electronic copies of CEQA documents before 2010 may be requested from:

Nicole Dobroski, Chief
Environmental Science, Planning, and Management Division
916.574.0742
DESPMChief.Public@slc.ca.gov