Mplx Terminals LLC - Indianapolis In Terminal
Total reported releases 5k lb held roughly steady year over year (+1%). Total releases concentrations are roughly unchanged from 2010.
4955 ROBISON RD, Indianapolis, 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 have fallen 18% since 2010.
Toluene
Toluene concentrations have fallen 15% since 2010.
Benzene
Benzene concentrations have fallen 18% since 2010.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations are roughly unchanged from 2010.
Cyclohexane
Cyclohexane concentrations are roughly unchanged from 2016.
Ethylbenzene
Ethylbenzene concentrations are roughly unchanged from 2010.
Polycyclic aromatic compounds
Polycyclic aromatic compounds volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
1,2,4-Trimethylbenzene
1,2,4-Trimethylbenzene concentrations have more than doubled since 2010.
Who Lives Next To This Facility
Within 3 miles of this facility (25 Census block groups, population-weighted demographics): a population of 35,545. 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.