Carbonyl sulfide
Carbonyl sulfide releases at Addis Carbon Black Plant fell from 23k lb to 9k lb (62% lower) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Addis Carbon Black Plant
Total reported releases 73k lb fell sharply year over year (-54%). Total releases concentrations have fallen 13% since 2010.
5221 SID RICHARDSON RD, Addis, Louisiana · 325180 · Chemicals · operated by Tokai Carbon Cb
Anomaly engine
Notable Signals
Carbon disulfide
Carbon disulfide releases at Addis Carbon Black Plant fell from 68k lb to 27k lb (61% lower) between 2023 and 2024.
Hydrogen sulfide
Hydrogen sulfide releases at Addis Carbon Black Plant fell from 68k lb to 27k lb (61% lower) between 2023 and 2024.
Hydrogen sulfide
Hydrogen sulfide at Addis Carbon Black Plant have more than halved since 2012 (through 2024).
Showing the 4 most editorially weighted signals out of 5. Lower-severity signals fold into the chemical breakdown and history charts below.
Chemicals reported · most recent year
What This Facility Releases
Carbon disulfide
Carbon disulfide concentrations have more than halved since 2010.
Hydrogen sulfide
Hydrogen sulfide concentrations have more than halved since 2012.
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Carbonyl sulfide
Carbonyl sulfide concentrations have more than halved since 2010.
Ammonia
Ammonia volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Polycyclic aromatic compounds
Polycyclic aromatic compounds concentrations are up 31% since 2010.
Hydrogen cyanide
Hydrogen cyanide concentrations have fallen 14% since 2010.
Benzo[g,h,i]perylene
Benzo[g,h,i]perylene concentrations are roughly unchanged from 2022.
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 9,630. Why we surface this →
20.8%
Low-income
42.1%
People of color
7.7%
Under age 5
10.9%
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.