Facility profile
Union Carbide Corp - St Charles Plant
Violation Identified across 2 of the last 12 quarters, with $3,384,800 in recorded penalties.
Noncompliance quarters
2
Counted from the imported ECHO record over the last 12 quarters.
Penalties
$3,384,800
Recorded enforcement amount carried into the facility page.
Last inspection
2025-10-28
Displayed as plain language instead of hidden in agency exports.
Trend
Watch
Reported on-site releases are lower in 2024 than in 2022.
| Year | Air | Water | Land | Total |
|---|---|---|---|---|
| 2022 | 253,834 lbs | 168,798 lbs | 0 lbs | 422,632 lbs |
| 2023 | 262,765 lbs | 98,204 lbs | 0 lbs | 360,969 lbs |
| 2024 | 328,682 lbs | 77,553 lbs | 0 lbs | 406,235 lbs |
Chemical breakdown
What this facility is reporting
-
Ethylene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
1, 4-Dioxane
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Ammonia
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Propylene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Formaldehyde
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Acrylic acid
Latest 2024 TRI data shows water as the largest reported pathway for this chemical at the facility.
-
Methanol
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
n-Hexane
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Allyl alcohol
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Ethylene oxide
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Acetaldehyde
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Diethanolamine
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Nonylphenol
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Acrolein
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Ethylene glycol
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Methyl acrylate
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Hydroquinone
Latest 2024 TRI data shows water as the largest reported pathway for this chemical at the facility.
-
n-Butyl alcohol
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Butyraldehyde
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Hydrogen sulfide
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Ethylbenzene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
1, 2, 4-Trimethylbenzene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Toluene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Benzene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
1, 3-Butadiene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
N-Hydroxyethylethylenediamine
Latest 2024 TRI data shows water as the largest reported pathway for this chemical at the facility.
-
Naphthalene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Formic acid
Latest 2024 TRI data shows water as the largest reported pathway for this chemical at the facility.
-
Zinc compounds
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Xylene (mixed isomers)
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Propionaldehyde
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Certain glycol ethers
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Biphenyl
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Isobutyraldehyde
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Styrene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
1, 2-Dichloroethane
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Nonylphenol Ethoxylates
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Anthracene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Nickel compounds
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Chromium compounds (except for chromite ore mined in the Transvaal Region)
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Cyclohexane
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Polycyclic aromatic compounds
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Pyridine
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Copper compounds
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Cumene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Dicyclopentadiene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Dimethyl phthalate
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Isoprene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Molybdenum trioxide
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Phthalic anhydride
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Silver compounds
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
-
Vanadium compounds
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
Enforcement layer
Why the ECHO-style detail matters
Violation Identified across 2 of the last 12 quarters, with $3,384,800 in recorded penalties.