Closure Plan Approval and Closure Certification Acceptance of the Bulk Container Storage Unit at the CononcoPhillips Company, San Francisco Refinery
Summary
SCH Number
2007018074
Public Agency
California Department of Toxic Substances Control
(DTSC)
Document Title
Closure Plan Approval and Closure Certification Acceptance of the Bulk Container Storage Unit at the CononcoPhillips Company, San Francisco Refinery
Document Type
NOE - Notice of Exemption
Received
Posted
1/11/2007
Document Description
The Department of Toxic Substances Control has accepted a closure certification report and approved a closure plan that documents closure activities at the Bulk Container Storage Unit (BCSU) of the ConocoPhillips Refinery Facility. The Human Health Risk Assessment for the soils impacted by the BCSU activities indicated a risk below 1 in 1,000,000 for human exposure to chemicals present in the soil. The Regional Water Quality Control Board is lead agency for site-wide cleanup requirements unrelated to the BCSU unit at ConocoPhillips, in accordance with Senate Bill 1082.
Contact Information
Name
Alejandro Galdamez
Agency Name
Department of Toxic Substances Control
Contact Types
Lead/Public Agency
Address
Phone
Location
Counties
Contra Costa
Other Location Info
City/Community: Rodeo
Notice of Exemption
Exempt Status
Other
Type, Section or Code
Section 15061(b)(3)
Reasons for Exemption
The Closure of the BCSU will not result in a significant environmental effect because:
- The closure of the BCSU will not violate any water quality standards or water discharge requirements and groundwater monitoring will continue under the RWQCB jurisdiction. The BCSU report for closure concluded that the activities of the BCSU did not have any impact to the groundwater under the unit. The groundwater gradient allows ConocoPhillips to capture and process all ground water impacted by IWS-6C through their water treatment unit. ConocoPhillips does not make use of groundwater.
- The closure of the BCSU as a permitted RCRA unit and continued operations under generator status will not increase the hazards due to the transportation of hazardous waste since all safety precautions to protect human health and the environment will continue to be practiced. The BCSU is equipped with a secondary containment system that consists of 6 inch curbs, catch basins, and drain trenches. The BSCU is also sloped engineered to prevent accidental spill from exiting the BCSU.
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