El Segundo Refinery

El Segundo Refinery
Name	El Segundo Refinery
Location	El Segundo, California, United States
Coordinates	33.9153°N 118.4166°W
Owner	HF Sinclair Corporation (formerly part of HollyFrontier, Kinder Morgan, Tosco, Unocal, Chevron)
Capacity bpd	~270000
Founded	1920s (refining operations expanded in 1920–1940)
Employees	~900–1200 (site and contractors)
Website	HF Sinclair

El Segundo Refinery is a large petroleum refining complex on the Los Angeles County coastline near the Pacific Ocean, adjacent to the cities of El Segundo, California and Manhattan Beach, California. The refinery occupies a strategic site on the Los Angeles Harbor, with crude supply and product distribution linked to regional terminals, marine berths, and major pipelines such as the Kinder Morgan network. Historically integral to Southern California fuel supply chains, the complex has been associated with major energy companies including Chevron Corporation, Unocal Corporation, Tosco Corporation, Kinder Morgan, Inc., HollyFrontier Corporation, and HF Sinclair Corporation.

History

The facility traces to early 20th-century developments in Southern California petroleum after discoveries in the Los Angeles Basin and infrastructure growth during the Roaring Twenties. Ownership evolved through mergers and divestitures involving Standard Oil of California (Chevron), Union Oil Company of California (Unocal), and Tosco, reflecting consolidation cycles driven by antitrust rulings and corporate strategy. During World War II the refinery expanded to meet military demand associated with the United States Navy and Pacific Theatre logistics. Late-20th-century events included capacity upgrades aligned with Clean Air Act state implementation and fuel reformulation initiatives linked to California Air Resources Board. In the 2000s ownership transfers to Kinder Morgan and later HollyFrontier and HF Sinclair paralleled shifts in North American refining footprints and global crude flows from sources like Alberta oil sands and international seaborne cargoes.

Facilities and Operations

The site comprises crude distillation units, catalytic cracking, hydrotreating, sulfur recovery, alkylation, and product blending trains typical of complex refineries. Key installations include vacuum distillation, fluid catalytic cracking (FCC) units, hydrocrackers, and naphtha reformers that feed downstream petrochemical and transportation fuel streams used by regional distributors and airlines at Los Angeles International Airport (LAX). Marine terminals and pipeline connections link to the Kinder Morgan El Segundo Terminal and other coastal infrastructure; rail and truck racks support local delivery to ports, airports, and retail networks. Utilities and offsites include cogeneration plants, wastewater treatment, sulfur handling, and tank farms integrating safety systems modeled on guidance from Occupational Safety and Health Administration (OSHA), Pipeline and Hazardous Materials Safety Administration (PHMSA), and industry groups like the American Petroleum Institute.

Ownership and Corporate Structure

Over its life the complex has been owned or operated by a succession of integrated and independent refiners. Corporate lineage includes Chevron Corporation (historical), Unocal Corporation, Tosco Corporation, and later pipeline and midstream owner Kinder Morgan, Inc. Strategic divestitures and asset swaps brought operators such as HollyFrontier Corporation, which subsequently merged assets and branding under HF Sinclair Corporation. Ownership changes have implications for capital investment decisions, workforce agreements with labor unions such as the United Steelworkers and contractor relationships with engineering firms like Bechtel and Fluor Corporation.

Products and Capacity

Configured to produce transportation fuels and refinery intermediates, the plant yields gasoline, diesel, jet fuel, propane, petrochemical feedstocks (naphtha), and sulfur byproducts sold into regional markets and export channels. Nameplate crude throughput has been reported near 270,000 barrels per day, subject to turnarounds and market-driven adjustments tied to West Coast demand, seasonal fuel specifications mandated by California Air Resources Board regulations, and feedstock quality from sources such as West Texas Intermediate and international crudes. Blending facilities permit production of reformulated gasoline compliant with California Reformulated Gasoline (CARFG) standards and jet fuels meeting ASTM D1655.

Safety, Environmental Impact, and Compliance

Operations interface with stringent regulatory frameworks including California Environmental Protection Agency, South Coast Air Quality Management District, and federal environmental statutes. Emissions control technologies include sulfur recovery units, selective catalytic reduction for NOx abatement, and vapor recovery systems to limit volatile organic compounds affecting Santa Monica Bay air and water quality. Stormwater and wastewater handling follow Clean Water Act implementation and permits administered by regional water boards. Community right-to-know reporting aligns with Emergency Planning and Community Right-to-Know Act inventories; environmental impact assessments have accompanied major projects to address concerns raised by local governments and advocacy groups such as the Sierra Club and Natural Resources Defense Council.

Incidents and Accidents

The refinery has experienced incidents typical of large hydrocarbon facilities, including fires, flaring events, and unplanned releases that prompted responses by the Los Angeles County Fire Department and coordination with state agencies. Notable events led to temporary production curtailments and regulatory scrutiny, invoking investigations by Cal/OSHA and Environmental Protection Agency regional offices. Lessons from past accidents influenced updates to process safety management, emergency response drills with municipal agencies, and investments in leak detection and repair programs.

Economic and Community Impact

As a major industrial employer in Los Angeles County, the complex contributes to local tax bases, procurement contracts with regional suppliers, and indirect jobs in logistics and service sectors. Its proximity to communities like El Segundo, California and Manhattan Beach, California has driven town-and-gown interactions on land use, noise, and shoreline aesthetics, while municipal planning bodies have negotiated mitigation measures. The refinery’s role in supplying aviation fuels intersects with operations at Los Angeles International Airport, influencing regional transportation resilience and fuel security policies debated in state capitols such as Sacramento, California.

Category:Petroleum refineries in California