Facility profile
Entegris Chester Plant
Significant noncompliance across 6 of the last 12 quarters, with $202,818 in recorded penalties.
Noncompliance quarters
6
Counted from the imported ECHO record over the last 12 quarters.
Penalties
$202,818
Recorded enforcement amount carried into the facility page.
Last inspection
2025-12-09
Displayed as plain language instead of hidden in agency exports.
Trend
Watch
Reported on-site releases are higher in 2024 than in 2022.
| Year | Air | Water | Land | Total |
|---|---|---|---|---|
| 2022 | 557 lbs | 0 lbs | 0 lbs | 557 lbs |
| 2023 | 996 lbs | 0 lbs | 0 lbs | 996 lbs |
| 2024 | 3,198 lbs | 0 lbs | 0 lbs | 3,198 lbs |
Chemical breakdown
What this facility is reporting
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Toluene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Methanol
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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n-Hexane
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Xylene (mixed isomers)
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Ethylbenzene
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 noncompliance across 6 of the last 12 quarters, with $202,818 in recorded penalties.