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Fabricated Plate Work (Boiler Shops), Cheswick, Pennsylvania. NPDES permit PA0217026, in force until Jun 30, 2030. Last 12 months: over a limit 2 times (last February 2026), 30 required values missing, 6 of 37 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | Solids, total suspended, instantaneous maximum | 70 mg/L | ≤ 60 mg/L | 17% |
| February 2026 | Solids, total suspended, monthly average | < 37.5 mg/L | ≤ 30 mg/L | 25% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | instantaneous maximum | ≤ 60 mg/L | all year | 001 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | instantaneous maximum | ≤ 30 mg/L | all year | 001 |
| Iron, dissolved [as Fe] | instantaneous maximum | ≤ 7 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/min) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/min) | all year | 001 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 001 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 001 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 001 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 001 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 002 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | instantaneous maximum | ≤ 60 mg/L | all year | 002 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 002 |
| Oil & Grease | instantaneous maximum | ≤ 30 mg/L | all year | 002 |
| Iron, dissolved [as Fe] | instantaneous maximum | ≤ 7 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/min) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/min) | all year | 002 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 002 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 002 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 002 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 002 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 003 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | instantaneous maximum | ≤ 60 mg/L | all year | 003 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 003 |
| Oil & Grease | instantaneous maximum | ≤ 30 mg/L | all year | 003 |
| Iron, dissolved [as Fe] | instantaneous maximum | ≤ 7 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/min) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/min) | all year | 003 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 003 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 003 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 003 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 57 Fabricated Metal Products permits in Pennsylvania.
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On EPA ECHO: Facility report · DMR history
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