SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

i ~ INFORMATION SHEET ORDER NO. R5-2003-0165 SUPPORT TERMINALS OPERATING PARTNERSHIP LP STOCKTON TERMINAL ENHANCED BIOREMEDIATION PILOT STUDY SAN JOAQUIN COUNTY Support Terminals Operating Partnership LP owns the bulk fuel terminal at 2941 Navy Drive in Stockton. Two separate gasoline releases occurred in March and April 2002. In June 2002, about 1,000 gallons of diesel were released. Investigations in August 2002 and March 2003 delineated the extent of the petroleum pollution. Petroleum pollution is limited to the A water bearing zone which is about 5 feet below ground surface. The proposed system will extract groundwater from two extraction wells screened in the A water bearing zone downgradient of the treatment area. The extracted groundwater will be piped to a 300-gallon storage tank at the upgradient end of the treatment zone and then mixed with PetroZyme,which is a proprietary product that contains microbes that produce enzymes capable of catalyzing the breakdown of petroleum hydrocarbons and NutriMax,which is a nutrient mix that contains nitrogen,phosphorus, and potassium to promote microbial growth. The treated groundwater is then injected via three injection wells at the upgradient end of the treatment zone by the Super OxTM unit. The Super OxTM oxygenation system takes the amended stream of water, oxygenates it to about 45 parts per million of dissolved oxygen, and injects it into the subsurface. The downgradient extraction and natural groundwater will pull the treated groundwater through the treatment area. There is plume capture to ensure that water quality objectives will not be exceeded beyond the project area. This remedial process allows microorganisms to degrade petroleum pollution to carbon dioxide and water. When the pilot study is completed, the amendments and byproducts shall not exceed baseline levels. DLL 9/24/03