San Diego Region - Tank Site Mitigation and Cleanup (TSMC) Unit
Methyl Tertiary-Butyl Ether (MTBE) | SWRCB Orphan Site Cleanup Grant Program
Notification of Corrective Action Plan for Leaking Underground Fuel Tank Site:
In accordance with Title 23, California Code of Regulations §2728, this is notification that the following activities are proposed in a Corrective Action Plan (CAP) dated September 2007 and submitted by Conoco Phillips to reduce petroleum hydrocarbon concentrations in soil and ground water at the Conoco Phillips Former Aztec Station #05680 located at 1540 East 8th Street, National City, California:
- Dual phase extraction of fluid and vapor phase petroleum hydrocarbons in a network of at least 19 SVE wells and six to eight groundwater wells for approximately 3 years.
- Monitored natural attenuation for approximately 5 additional years.
The CAP and supporting case files are available for public review at the RWQCB office or online through the GeoTracker Database at https://geotracker.waterboards.ca.gov.
Mission
The mission of the Tanks Site Mitigation and Cleanup Unit (TSMC) is to ensure timely and effective regional compliance with requirements for investigation, cleanup and abatement of pollution caused by unauthorized releases of petroleum and other hazardous substances from leaking Underground Storage Tank (UST); thereby supporting the mission of the San Diego Regional Water Quality Control Board.
Geographic/Watershed Jurisdiction
The jurisdiction of the Tanks Site Mitigation and Cleanup Unit extends over the entire footprint of the San Diego Region.
Unit Activities
California has been regulating underground storage tanks (USTs) containing hazardous substances since 1983, applying federal and state laws, regulations and policies. The State Water Resources Control Board (SWRCB) is the designated lead regulatory agency for the development of UST regulations and policy.
The three primary elements of the UST Cleanup Oversight Program are prevention, cleanup oversight under authority of Water Code section 13304 and pursuant to State regulations [CCR Title 23 Chapter 16], and cleanup reimbursement by the SWRCB UST Cleanup Fund. The Regional Board Tanks Site Mitigation & Cleanup (TSMC) Unit provides technical and regulatory oversight for the investigation and cleanup of sites impacted by leaking USTs, and develops regional guidance on implementing the policies and procedures of the SWRCB. This information is maintained in the on-line GeoTracker database. For more information on the statewide Underground Storage Tank Program, please visit the State Water Resources Control Board (SWRCB) Leaking Underground Storage Tank Website .
The San Diego Region includes three county local oversight program (LOP) agencies under contract with the SWRCB (San Diego County, Orange County, Riverside County), which oversee investigation and cleanup at many leaking UST cases in the San Diego Region. Pursuant to their contracts with the SWRCB, the LOP agencies are required to coordinate their oversight with the Regional Boards.
Although the Regional Board no longer receives resources to oversee compliance with State and Federal above-ground storage tank requirements, additional information on this program may be found on the SWRCB Above-ground Tank webpage.
