Supply Explorer
Fuels refinery

Marathon Los Angeles Refinery (Carson Operations; formerly Tesoro Los Angeles Refinery)

Tesoro Refining & Marketing Company, LLC (dba Marathon Los Angeles Refinery) · Marathon Petroleum Corporation · Carson, CA

Operating PADD5 IRS refinery no. R-33-CA-0015 petroleum coke sulfur lpg petrochemical feedstocks
The Carson, CA refinery under its prior BP ownership (BP sold it to Tesoro in June 2013; now Marathon's Los Angeles Refinery - Carson Operations)
The Carson, CA refinery under its prior BP ownership (BP sold it to Tesoro in June 2013; now Marathon's Los Angeles Refinery - Carson Operations) Photo: Antandrus (English Wikipedia) · CC BY-SA 3.0 · source
bpd crude capacity · EIA 2026
365,000
pipelines it injects into
1
delivery points reachable
14
terminals on those points
21
events on record
3

Capability

Crude distillation 365,000 bpd operable, 365,000 operating (EIA-820, as of 2026-01-01). Downstream units below, barrels per calendar day.

Conversion — makes gasoline and diesel from heavier oil

Catalytic cracking (FCC) 104,500
Hydrocracking — distillate 95,500
Delayed coking 103,700

Upgrading

Catalytic reforming — high pressure 79,000
Vacuum distillation 205,500 sd

Treating — meets sulfur specs

Hydrotreating — diesel 24,000 sd
Hydrotreating — kerosene & jet 28,500 sd
Hydrotreating — gasoline 17,000 sd
Hydrotreating — naphtha / reformer feed 79,000 sd
Hydrotreating — heavy gas oil 147,000 sd

Production capacity

Alkylates · 30,000 Hydrogen mmcfd · 122 Isomerization isobutane · 16,500 Isomerization isopentane isohexane · 25,500 Petcoke market · 22,640 Sulfur short tons day · 749

Crude slate

California crude by pipeline, including heavy crude from the San Joaquin Valley and the Los Angeles Basin, plus Alaska North Slope, South American, West African and other international crude by ship through the Port of Long Beach.

Crude in & products out

From refinery research; each row links its source.
Sign in to download connections
DirectionModeRoutePoint / originProductsSource
crude in pipeline Onshore crude pipelines (not named)
The 2025 Initial Study says crude oil, including California crude, can be delivered by pipeline from onshore locations such as oil production facilities and nearby third-party terminals. The pipelines are not named.		 California crude, including heavy crude from the San Joaquin Valley and the Los Angeles Basin crude source
crude in marine Berth 121 (Marine Terminal 1), Port of Long Beach
Crude only. The berth has no storage, so crude is piped to the Carson Crude Terminal south of the plant, operated by Tesoro Logistics Operations LLC, and then to the Carson site's nine crude tanks. The 2017 Final EIR says the berth takes very large crude carriers of up to two million barrels.		 Waterborne crude. Marathon lists Alaska North Slope, South America, West Africa and other international sources for the refinery as a whole. crude source
crude in marine Marine Terminal 2 (Berths 76-78), Port of Long Beach
The 2025 Initial Study says crude for the Carson Operations is unloaded at Berth 121 or the T-2 terminal and moved by pipeline to Port of Long Beach terminals or the Carson Crude Terminal. The 2017 Final EIR gives the terminal a tank farm of 34 tanks holding 1,800,000 barrels.		 Waterborne crude crude source
crude in marine Long Beach Terminal (Berths 84A and 86), Port of Long Beach
Serves the Wilmington site of the same refinery. The 2025 Initial Study says crude for the Wilmington Operations is delivered by ship and moves by pipeline from the Tesoro Logistics Operations marine terminal at Berths 84A and 86. The 2017 Final EIR describes a 24-inch line into the Wilmington tanks.		 Waterborne crude crude source
products out pipeline Kinder Morgan SFPP
Kinder Morgan's March 2025 Pacific Operations brochure draws Marathon Carson as a facility with a line into Watson Station and says Watson is entered by gathering lines into the breakout facility. Watson is the origin of the SFPP West Line and San Diego Line. The SFPP tariff names Watson as the origin, not the refinery.		 SFPP Watson Station, Carson, reached by a gathering line from the plant gasoline distillate jet fuel source
products out pipeline Calnev Pipeline
There is no separate Calnev connection at the plant. The Calnev and SFPP joint tariff takes product from SFPP at Watson, routes it over SFPP to Colton and then over Calnev to Clark County, Nevada. The Kinder Morgan brochure lists Watson as a Calnev origin.		 Colton, reached over SFPP from Watson Station gasoline distillate jet fuel inferred
products out pipeline Marathon and third-party pipelines to distribution terminals and the Wilmington Operations
The 2025 Initial Study says gasoline, diesel and jet fuel are routed to distribution terminals by pipeline, and that Marathon and third-party pipelines move intermediate and finished products between the Carson and Wilmington sites. The 2017 Final EIR says pipelines export the majority of the refinery's gasoline, jet fuel and diesel. The lines and the terminals they reach are not named.		 At the plant gasoline distillate jet fuel source
products out truck rack Marathon Los Angeles Refinery truck racks, Carson (Tesoro Logistics Operations LLC Carson Products Terminal)
The 2017 Final EIR says the refinery uses permitted truck racks to send out gasoline, diesel, petroleum coke, sulfur and LPG. The 2025 Initial Study names a Tesoro Logistics Operations Carson Products Terminal next to the Carson Operations. An asphalt binder truck rack for up to four trucks at a time is proposed and not built.		 Carson gasoline distillate petroleum coke sulfur lpg source
products out marine Marine Terminal 2 (Berths 76-78), Port of Long Beach
The 2017 Final EIR says the terminal's loading arms load petroleum products and crude oils and that three vessels can be loaded or discharged at once. The 2025 Initial Study says the Carson Operations move petroleum products by marine vessel. The grades loaded out are not listed.		 Port of Long Beach, by pipeline from the plant source
products out rail LPG rail rack, Carson Operations
The 2017 Final EIR says the refinery ships and receives LPG by rail over a permitted LPG loading and unloading rack. Up to seven railcars a day of LPG were received in 2017. The 2025 Initial Study says no crude oil moves to the Carson Operations by rail.		 Carson lpg source

Docks

The docks at this facility and, where a ship agent or port publishes it, the largest vessel each berth takes. Channel conditions change; these figures are a guide, not clearance to sail.

Berth 121 (Marine Terminal 1), Pier T · crude in

  • Only crude oil is unloaded here.
  • There is no storage at the berth. Crude is piped directly to the Carson Crude Terminal near the Carson Operations.
  • The terminal also connects to other storage in the area, including Terminal 2.
  • Takes very large crude carriers of up to two million barrels.

Source: South Coast AQMD Final EIR, Tesoro Los Angeles Refinery Integration and Compliance Project (May 2017), read 2026-10-11.

Marine Terminal 2 (Berths 76-78), Pier B · crude in, products out

  • Crude for the Carson Operations is unloaded here or at Berth 121.
  • Tank farm of 34 above ground tanks with 1,800,000 barrels of storage.
  • Loading arms handle petroleum products and crude oils at 10,000 to 15,000 barrels per hour.
  • Three vessels can be loaded or discharged at once.

Source: South Coast AQMD Final EIR, Tesoro Los Angeles Refinery Integration and Compliance Project (May 2017) ; South Coast AQMD Initial Study, Marathon Los Angeles Refinery Modernization Projects (November 2025), read 2026-10-11.

Long Beach Terminal (Berths 84A and 86) · crude in

  • Crude oil, petroleum products and bunker fuel are unloaded here.
  • A 24-inch pipeline runs to storage tanks at the Wilmington site, with a discharge capacity of 32,000 barrels per hour.
  • Supplies crude to the Wilmington Operations of the refinery, not the Carson plant.
  • Two vessels can be loaded or discharged at once.

Source: South Coast AQMD Final EIR, Tesoro Los Angeles Refinery Integration and Compliance Project (May 2017) ; South Coast AQMD Initial Study, Marathon Los Angeles Refinery Modernization Projects (November 2025), read 2026-10-11.

Pipeline reach

Where this refinery’s product can go by published tariff route from the points it injects at — what an outage here would touch.
Sign in to download reach
PipelineInjects atDelivery pointsTerminalsLowest ¢/bblMedian ¢/bbl
Kinder Morgan SFPP
Watson per research
14 21 14.58 107.43

Substitutes

Other refineries injecting into the same pipelines — the supply that could backfill an outage here.

Events

Outages, fires, turnarounds, sales and closures — newest first.
Sign in to download events
  1. 2025-11 expansion

    The South Coast AQMD issued a Notice of Preparation and Initial Study for the Marathon Los Angeles Refinery Modernization Projects. The projects include a new asphalt sales rack at the Carson site to load up to four trucks at a time with asphalt binder. source

  2. 2022 other

    The coke calciner was shuttered. All petroleum coke now goes directly to the Port of Long Beach. source

  3. 2018 other

    The fluid catalytic cracking unit at the Wilmington Operations was shut down. The refinery's remaining cracker is at the Carson Operations. source

Rates are pipeline line-haul transcribed from published FERC tariffs; every figure cites its tariff and item. Cost to serve (netback) adds origin spot price and destination fees. "Confirmed" links match a tariff delivery point to the facility; "same city" means the point is in the facility's city — plausible, not proof; "per research" means the facility's research profile names the pipeline as an outlet.