Site Cleanup Requirements for Phillips 66 Company Line 200 Release
4 Documents in Project
Summary
SCH Number
2016012055
Lead Agency
Regional Water Quality Control Board, Region 2 (San Francisco Bay), Oakland
Document Title
Site Cleanup Requirements for Phillips 66 Company Line 200 Release
Document Type
NOD - Notice of Determination
Received
Posted
4/4/2016
Present Land Use
Land Use: grazing land, former residential property; General Plan; Concord Reuse Project Open Space (CRP-OS), Rural Residential
Document Description
The project would consist of remediation of soil and groundwater contamination on and adjacent to the Concord Naval Weapons Station (CNWS) in Contra Costa County that resulted from a leak in the Phillips 66 Company's Line 200 oil pipeline where it crosses to CNWS. The leak was discovered and repaired in Nov. 2011 and an initial emergency response cleanup was performed between Nov. 2011 and Feb. 2012. The plume of light non-aqueous phase liquid (LNAPL) contamination spreads to an adjacent residential property located within the City of Concord, immediately south of the pipeline leak. The purpose of the proposed project is to remove via excavation the bulk of the LNAPL and soil contamination that could pose a threat to human and ecological receptors through direct contact, vapor intrusion, and leaching to groundwater.
Contact Information
Name
Ross Steenson
Agency Name
Regional Water Quality Control Board, Region 2 (San Francisco Ba
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Cities
Concord
Counties
Contra Costa
Cross Streets
Holly Drive at Holly Creek Place
Zip
94521
Total Acres
8.9
Parcel #
117-070-009, 111-010-014
Schools
Ayers ES
Waterways
Mt. Diablo Creek, Rattlesnake Creek
Notice of Determination
Approving Agency
SF Bay Regional Water Quality Control Board
Approving Agency Role
Lead Agency
Approved On
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
Yes
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.