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Facility profile

Cornerstone Chemical Co Llc

Significant Violation across 10 of the last 12 quarters, with $122,114 in recorded penalties.

Significant Violation Chemicals TRI + Clean Air Act + Clean Water Act + RCRA 110049249075 Jefferson County
Noncompliance quarters
10

Counted from the imported ECHO record over the last 12 quarters.

Penalties
$122,114

Recorded enforcement amount carried into the facility page.

Last inspection
2025-04-09

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 353,896 lbs 136,317 lbs 12,698,271 lbs 13,188,484 lbs
2023 262,217 lbs 381,266 lbs 12,109,516 lbs 12,752,999 lbs
2024 202,634 lbs 200,148 lbs 10,921,140 lbs 11,323,922 lbs
Chemical breakdown

What this facility is reporting

  • land 5,504,517 lbs

    Acetonitrile

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 3,083,317 lbs

    Ammonia

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 1,009,971 lbs

    Cyanide compounds

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 408,639 lbs

    Methanol

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 384,589 lbs

    Acrylamide

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • water 173,758 lbs

    Nitrate compounds (water dissociable; reportable only when in aqueous solution)

    Latest 2024 TRI data shows water as the largest reported pathway for this chemical at the facility.

  • land 143,707 lbs

    Acetamide

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 128,942 lbs

    Pyridine

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 73,560 lbs

    Acetaldehyde

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 73,196 lbs

    Ethylene glycol

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • air 69,741 lbs

    Propylene

    Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.

  • land 62,841 lbs

    Methyl methacrylate

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 56,453 lbs

    Certain glycol ethers

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 48,510 lbs

    Acrylonitrile

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 45,024 lbs

    Molybdenum trioxide

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • land 39,758 lbs

    Hydroquinone

    Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.

  • air 15,329 lbs

    Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

    Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.

  • air 1,771 lbs

    Hydrogen cyanide

    Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.

  • air 298 lbs

    2-Methyllactonitrile

    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

Significant Violation across 10 of the last 12 quarters, with $122,114 in recorded penalties.

Significant Violation Last recorded inspection: 2025-04-09. Total penalties on record: $122,114.