Mplx Terminals LLC - Mt Vernon LP Terminal
Total reported releases 3k lb rose meaningfully year over year (+16%). Total releases concentrations are up 22% since 2011.
129 BARTER ST, Mount Vernon, Indiana · 424710 · Petroleum Bulk Terminals · operated by Marathon Petroleum CORP
Notable Signals
No notable signals at this facility for the current reporting year. See chemicals and equity context below for the full picture.
What This Facility Releases
n-Hexane
n-Hexane concentrations are roughly unchanged from 2011.
Toluene
Toluene concentrations are roughly unchanged from 2011.
Benzene
Benzene concentrations are roughly unchanged from 2011.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations are up 37% since 2011.
Cyclohexane
Cyclohexane concentrations are up 77% since 2016.
Ethylbenzene
Ethylbenzene concentrations are up 26% since 2011.
Naphthalene
Naphthalene concentrations are up 88% since 2011.
Cumene
Cumene concentrations are up 33% since 2016.
Who Lives Next To This Facility
Within 3 miles of this facility (6 Census block groups, population-weighted demographics): a population of 5,879. Why we surface this →
Low-income
People of color
Under age 5
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.