Isoprene
Isoprene releases at Tsrc Specialty Materials LLC fell from 15k lb to 4k lb (72% lower) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Tsrc Specialty Materials LLC
Total reported releases 375k lb rose sharply year over year (+40%). Total releases concentrations are up 17% since 2011.
21255 LA HWY 1, Plaquemine, Louisiana · 325211 · Chemicals
Anomaly engine
Notable Signals
Chemicals reported · most recent year
What This Facility Releases
Cyclohexane
Cyclohexane concentrations are up 19% since 2011.
Styrene
Styrene concentrations have fallen 10% since 2011.
Isoprene
Isoprene concentrations are roughly unchanged from 2011.
1,3-Butadiene
1,3-Butadiene concentrations have more than halved since 2011.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (3 Census block groups, population-weighted demographics): a population of 7,637. Why we surface this →
17.8%
Low-income
46.7%
People of color
7.9%
Under age 5
11.4%
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.