n-Hexane
n-Hexane releases at Dcp Midstream LP Cimarron Plant fell from 28k lb to 9k lb (69% lower) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Dcp Midstream LP Cimarron Plant
Total reported releases 20k lb fell sharply year over year (-56%). Total releases concentrations have fallen 17% since 2022.
HWY. 270 APPROX 4 1/2 MI NW, Seiling, Oklahoma · 211130 · Natural Gas Processing · operated by Phillips 66 Co
Anomaly engine
Notable Signals
Chemicals reported · most recent year
What This Facility Releases
Cyclohexane
Cyclohexane concentrations are roughly unchanged from 2022.
n-Hexane
n-Hexane concentrations are up 18% since 2022.
Benzene
Benzene concentrations have fallen 39% since 2022.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 935. Why we surface this →
33.3%
Low-income
25.9%
People of color
3.4%
Under age 5
20.5%
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.