Ammonia
Ammonia releases at Tesoro Refining & Marketing Company LLC - Slc fell from 30k lb to 13k lb (57% lower) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Tesoro Refining & Marketing Company LLC - Slc
Total reported releases 120k lb fell modestly year over year (-6%). Total releases concentrations have fallen 16% since 2010.
474 W 900 N, Salt Lake City, Utah · 324110 · Petroleum · operated by Marathon Petroleum CORP
Anomaly engine
Notable Signals
Chemicals reported · most recent year
What This Facility Releases
Hydrogen sulfide
Hydrogen sulfide concentrations are up 99% since 2012.
Ammonia
Ammonia concentrations have more than doubled since 2010.
n-Hexane
n-Hexane concentrations have more than halved since 2010.
Lead compounds
Lead compounds concentrations are up 16% since 2012.
Benzene
Benzene concentrations have more than doubled since 2010.
Toluene
Toluene concentrations have fallen 21% since 2010.
Hydrogen cyanide
Hydrogen cyanide concentrations have more than doubled since 2014.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations have fallen 37% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (75 Census block groups, population-weighted demographics): a population of 98,220. Why we surface this →
36.0%
Low-income
44.2%
People of color
5.3%
Under age 5
10.8%
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.