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CIT F STOCKTON -AD DEPARTMENT OF MUNICIPAL UTILITIES 2500 NAVY DRIVE STOCKTON,CA 95206-1191 (209)937-8750 FAX(209)S37-8708 August 1, 2001 Patricia H. Leary, P.E., Chief,NPDES Unit Regional Water Quality Control Board Central Valley Region P. O. Box 944213 Sacramento, CA 94244-2130 FUEL OIL SPILL AT 1130 S. PILGRIM STREET STOCKTON CA At approximately 1150 hours on July 25, 2001 a complaint, (filed anonymously via the City Corporation yard dispatcher), was received by Environmental Control Officer assigned to the Stormwater Division. The site was investigated and it was found (original estimate) that about 500 gallons of fuel oil was released from a fill tube to an (assumed) underground fuel storage tank located at 1130 S. Pilgrim Street, Stockton, an Islamic Center. The cause of the release is believed to be due to a vehicle breaking a fire hydrant at Jackson and Pilgrim Streets, with resulting flooding water entering the tank and "floating" the oil out of the fill tube and into the City's storm catch basins. Notifications were made to Stockton Fire Department, Stockton Police Department, San Joaquin County IDES, San Joaquin County Health Department, Department of Fish and Game, Regional Water Quality Control Board, State Water Resources Control Board and the State Warning Center IDES (#01-1266). All of the notifications were completed by 1440 hours. The Stockton City Attorney's Office was notified on July 27, 2001. At about 1800 hours, Ramos Environmental Services arrived and began the clean up of the gutter and catch basins. Oil adsorbent booms were placed within the 7'x10' box culvert, which services the catch basins draining from this location and at the outlet of the box culvert. The 7'x10' box culvert is 7,391 feet in length with very limited access. Most of July 26, 2001 was devoted to locating and digging up manhole access points. Confined space entry was made at San Joaquin Street into the culvert and another adsorbent boom was placed. There was no evidence of fuel oil contamination at this location. Contamination was evident at the east entrance to the culvert. There is no flow occurring in Mormon Slough and even though the 7 x 10 box culvert is influenced by the tide, no fuel oil contamination entered the waterway. The only contamination is confined to the "marsh area" approximately 20 feet by 20 feet at the www.stocktongov.com "STOCKTON...CALIFORNIA'S SUNRISE SEAPORT"