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Blast Furnaces And Steel Mills, Trinity, Alabama. NPDES permit AL0070068, in force until Oct 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | report only (SU) | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 001 |
| Toluene | daily maximum | report only (mg/L) | all year | 001 |
| Benzene | daily maximum | report only (mg/L) | all year | 001 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 001 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Solids, total dissolved | maximum | report only (mg/L) | all year | 001 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 001 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 001 |
| pH | daily minimum | report only (SU) | all year | 002 |
| pH | daily maximum | report only (SU) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 002 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 002 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 002 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 002 |
| Toluene | daily maximum | report only (mg/L) | all year | 002 |
| Benzene | daily maximum | report only (mg/L) | all year | 002 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 002 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Solids, total dissolved | maximum | report only (mg/L) | all year | 002 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 002 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 002 |
| pH | daily minimum | report only (SU) | all year | 003 |
| pH | daily maximum | report only (SU) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 003 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 003 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 003 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 003 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 003 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 003 |
| Toluene | daily maximum | report only (mg/L) | all year | 003 |
| Benzene | daily maximum | report only (mg/L) | all year | 003 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 003 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Solids, total dissolved | maximum | report only (mg/L) | all year | 003 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 003 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 003 |
| pH | daily minimum | report only (SU) | all year | 004 |
| pH | daily maximum | report only (SU) | all year | 004 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 004 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 004 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 004 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 004 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 004 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 004 |
| Toluene | daily maximum | report only (mg/L) | all year | 004 |
| Benzene | daily maximum | report only (mg/L) | all year | 004 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 004 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Solids, total dissolved | maximum | report only (mg/L) | all year | 004 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 004 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 004 |
| pH | daily minimum | report only (SU) | all year | 007 |
| pH | daily maximum | report only (SU) | all year | 007 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 007 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 007 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 007 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 007 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 007 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 007 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 007 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 007 |
| Toluene | daily maximum | report only (mg/L) | all year | 007 |
| Benzene | daily maximum | report only (mg/L) | all year | 007 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 007 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Solids, total dissolved | maximum | report only (mg/L) | all year | 007 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 007 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 007 |
| pH | daily minimum | report only (SU) | all year | 011 |
| pH | daily maximum | report only (SU) | all year | 011 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 011 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 011 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 011 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 011 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 011 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 011 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 011 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 011 |
| Toluene | daily maximum | report only (mg/L) | all year | 011 |
| Benzene | daily maximum | report only (mg/L) | all year | 011 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 011 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| Solids, total dissolved | maximum | report only (mg/L) | all year | 011 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 011 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 011 |
| pH | daily minimum | ≥ 6 SU | all year | 07A |
| pH | daily maximum | ≤ 8.5 SU | all year | 07A |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Apr–Sep | 07A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 07A |
| pH | daily minimum | ≥ 6 SU | all year | 07B |
| pH | daily maximum | ≤ 8.5 SU | all year | 07B |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Apr–Sep | 07B |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 07B |
| pH | daily minimum | ≥ 6 SU | all year | 07C |
| pH | daily maximum | ≤ 8.5 SU | all year | 07C |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Apr–Sep | 07C |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 07C |
Cited limits by parameter: Alabama's rules and the federal ones.
Same industry: the 23 Primary Metal Industries permits in Alabama.
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On EPA ECHO: Facility report · DMR history
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