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Facility profile

Shell Chemical Lp - Martinez Catayst Plant

Violation across 5 of the last 12 quarters in the imported ECHO record.

Violation Chemicals TRI + RCRA 110000483254 Contra Costa County
Noncompliance quarters
5

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

Penalties
$0

Recorded enforcement amount carried into the facility page.

Last inspection
2025-10-03

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 22,123 lbs 10 lbs 0 lbs 22,133 lbs
2023 21,352 lbs 24 lbs 0 lbs 21,376 lbs
2024 13,585 lbs 9 lbs 0 lbs 13,594 lbs
Chemical breakdown

What this facility is reporting

  • air 6,698 lbs

    Silver compounds

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

  • air 3,648 lbs

    Toluene

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

  • air 3,248 lbs

    Ammonia

    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 across 5 of the last 12 quarters in the imported ECHO record.

Violation Last recorded inspection: 2025-10-03.