Tesoro Refining and Marketing Co., LLC - Los Angeles Refinery, Wilmington, California Oil Infrastructure

Tesoro Refining and Marketing Co., LLC - Los Angeles Refinery is an operational oil refinery located in Wilmington, Los Angeles County, California. The facility processes crude oil into gasoline, diesel, jet fuel, and other petroleum products, serving the Southern California market. As part of the Los Angeles Basin refining complex, it plays a key role in meeting regional fuel demand. The refinery operates under the regulatory framework of the U.S. Environmental Protection Agency (EPA) and the California Air Resources Board (CARB), which impose stringent emissions standards and safety requirements. Refineries in this region typically employ complex processing units such as fluid catalytic crackers and reformers to maximize high-value product yields. The facility's Nelson complexity index is not publicly specified, but it is likely moderate to high given its location in a major refining hub. The Los Angeles Refinery is situated near the Port of Los Angeles, a major crude oil import terminal, and is connected to pipelines supplying crude from local and Alaskan sources. Its coastal location necessitates robust spill prevention and response measures under state and federal regulations. The facility contributes to the local economy through employment and tax revenue while operating under close environmental scrutiny.

The refinery's coastal location in Wilmington, near the Port of Los Angeles, presents inherent spill risks to marine and coastal ecosystems. The facility must comply with the EPA's Refinery MACT standards for air emissions and California's stringent air quality rules. The surrounding area is heavily industrialized, with potential cumulative impacts on air quality and water resources. The refinery's operations are subject to the Clean Water Act and Spill Prevention, Control, and Countermeasure (SPCC) regulations.