Velarion Records
The Pay Desk is the free weekly executive pay briefing — one company at a time, every number traceable to a public filing.
You’ll confirm on The Pay Desk’s sign-up page.

Clean Air Act stationary source · ICIS-AIR CASCA0000603700081

TESORO REFINING AND MARKETING CO, LLC, Carson, CA: Clean Air Act compliance record, inspections, violations, penalties

TESORO REFINING AND MARKETING CO, LLC, at 23208 S ALAMEDA, Carson in Los Angeles County, California, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “No Violation Identified”. Los Angeles County is on EPA’s Green Book list of areas that do not meet a national air quality standard. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.

Identity

Facility as filedTESORO REFINING AND MARKETING CO, LLC
ICIS-AIR IDCASCA0000603700081
EPA facility registry ID110000746667
Operating statusOperating
Emissions classificationMajor source
Current violation status (ICIS-AIR high-priority violation field)No Violation Identified
Address23208 S ALAMEDA, Carson, CA 90810
CountyLos Angeles County
In a nonattainment countyYes (EPA Green Book)
Industry (NAICS)Chemical manufacturing (NAICS 3251)
SIC code2819
EPA region09
Local air agencySouth Coast Air Quality Management District (Grantee)

Cited to the EPA ICIS-AIR facility file (ECHO download).

Programs and pollutants

Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs TESORO REFINING AND MARKETING CO, LLC is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.

Compliance evaluations

DateWhat EPA recordedAgencyPrograms
June 25, 2026PCE Off-Site - Review of 114 ResponseLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
April 22, 2026FCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
May 16, 2025FCE Off-SiteLocalTitle V Permits
May 6, 2025PCE Off-SiteLocalTitle V Permits
May 1, 2025PCE On-SiteLocalTitle V Permits
April 29, 2025PCE Off-SiteLocalTitle V Permits
February 11, 2025PCE Off-SiteLocalTitle V Permits
October 14, 2024PCE Off-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
September 3, 2024PCE Off-SiteLocalTitle V Permits
June 5, 2024PCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
March 27, 2024FCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
June 21, 2023PCE Off-SiteLocalTitle V Permits
May 24, 2023FCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
January 18, 2023PCE Off-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
August 10, 2022PCE Off-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
March 31, 2022PCE Off-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
March 2, 2022FCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
January 7, 2022PCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
January 7, 2022PCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
January 12, 2021PCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
September 4, 2020FCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
July 23, 2020PCE Off-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
September 13, 2019PCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
September 13, 2019FCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
August 2, 2019PCE Off-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
June 15, 2019PCE Off-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
July 21, 2018FCE Off-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
February 22, 2018PCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
December 3, 2017FCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
December 3, 2017PCE On-SiteLocalState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits

Violations

A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.

EPA’s violation history file holds no violation for ICIS-AIR CASCA0000603700081 since January 1, 2017.

Enforcement and penalties

0 formal enforcement actions since January 1, 2017, 0 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.

Informal enforcement

EPA’s informal action file holds no notice or warning for ICIS-AIR CASCA0000603700081 since January 1, 2017.

Stack tests

DateWhat EPA recordedAgency
March 20, 2026PassLocal
March 16, 2026PassLocal
September 12, 2024PassLocal
July 30, 2024PassLocal
July 30, 2024PassLocal
June 1, 2023PassLocal
January 28, 2021PassLocal
January 26, 2021PassLocal
September 2, 2020PassLocal
February 22, 2019PassLocal
February 19, 2019PassLocal
February 11, 2019PassLocal
July 10, 2017PassLocal

Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.

Watch this source

One source, $99/month. A source: the register entry for a plant, refinery, kiln, generating station, or other fixed installation the agency tracks under the Clean Air Act. Choose “One source” and enter this source’s ICIS-AIR ID, CASCA0000603700081.

Start the watch

How often?
  • One source — $99/month
  • One county — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110000746667 there.

Nearby on the register

Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.