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• CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION MONITORING AND REPORTING ORDER NO. R5-2011-0813 CALIFORNIA WATER CODE SECTION 13267 FOR STOCKTON TERMINALS TECHNICAL COMMITTEE BRITISH PETROLEUM COMPANY, BUCKEYE PARTNERS, L.P., TESORO PETROLEUM COMPANY AND FORMER TIME OIL COMPANY BULK FUEL TERMINALS STOCKTON, SAN JOAQUIN COUNTY This Order is issued to British Petroleum Company (BP, formerly ARCO), Buckeye Partners, L.P. (Buckeye), Tesoro Petroleum Company (Tesoro), and Former Time Oil Company (FTOC), which comprise the Stockton Terminals Technical Committee (STTC); the three companies are hereafter jointly referred to as Discharger. The Order is issued pursuant to California Water Code section 13267, which authorizes the Executive Officer of the California Regional Water Quality Control Board, Central Valley Region (hereafter Central Valley Water Board or Board) to issue a Monitoring and Reporting Order (Order). The Executive Officer finds: INTRODUCTION 1. BP, Buckeye, Tesoro, and FTOC are located at the intersection of Navy Drive and West Washington Boulevard in Stockton, San Joaquin County and are collectively referred to as the Site. In the fall of 2004, the Discharger began operating two ozone sparge (OS) systems to clean up groundwater pollution migrating downgradient from the Site and locally on the Tesoro terminal. The west system is downgradient of Tesoro, and the east system is downgradient of BP. The Discharger is responsible for the discharge because the companies that comprise the STTC owned and/or operated the facilities at the times of the discharges. 2. Investigations have shown that elevated levels of total petroleum hydrocarbons as gasoline (TPHg), TPH as diesel (TPHd), benzene, toluene, ethylbenzene, and xylenes (collectively BTEX), tertiary amyl methyl ether (TAME), methyl tertiary butyl ether (MTBE), and tertiary butyl alcohol (TBA) are present in groundwater at the Site, which flows generally to the southeast and varies from about two to 11 feet below ground surface. This pollution has impaired the beneficial use of groundwater resources at the Site. 3. To address the groundwater contamination, Tesoro is conducting two pilot studies of remedial technologies, including pressurized oxygen injection and hydrogen peroxide injection. BP had conducted quarterly groundwater extraction from select monitoring wells to mitigate methylene blue active substances (MBAS) discharged to groundwater during a November 2008 fire suppressant foam discharge.