Knife River Casper
Total reported releases 14 lb fell meaningfully year over year (-35%). Total releases concentrations have more than halved since 2010.
1461 BRYAN STOCK TRL, Casper, Wyoming · 324121 · Petroleum · operated by Knife River 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
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have more than doubled since 2018.
Polycyclic aromatic compounds
Polycyclic aromatic compounds volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Lead And Lead Compounds
Lead And Lead Compounds volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Who Lives Next To This Facility
Within 3 miles of this facility (26 Census block groups, population-weighted demographics): a population of 30,258. 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.