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Blast Furnaces And Steel Mills, East Chicago, Indiana. NPDES permit IN0063355, in force until Nov 30, 2026. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | maximum | report only (SU) | Jun, Dec | 001 |
| Solids, total suspended | maximum | report only (mg/L) | Jun, Dec | 001 |
| Oil and grease, hexane extr method | maximum | report only (mg/L) | Jun, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | Jun, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | Jun, Dec | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) | Jun, Dec | 001 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | Jun, Dec | 001 |
| Iron, total recoverable | maximum | report only (mg/L) | Jun, Dec | 001 |
| Zinc, total recoverable | maximum | report only (mg/L) | Jun, Dec | 001 |
| Lead, total recoverable | maximum | report only (mg/L) | Jun, Dec | 001 |
| Chromium, total recoverable | maximum | report only (mg/L) | Jun, Dec | 001 |
| Copper, total recoverable | maximum | report only (mg/L) | Jun, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | Jun, Dec | 001 |
| Chemical Oxygen Demand [COD] | maximum | report only (mg/L) | Jun, Dec | 001 |
| Storm water flow | maximum | report only (MGD) | Jun, Dec | 001 |
| Flow, total | semi-annual total | report only (Mgal/6mo) | Jun, Dec | 001 |
| pH | maximum | report only (SU) | Jun, Dec | 020 |
| Solids, total suspended | maximum | report only (mg/L) | Jun, Dec | 020 |
| Oil and grease, hexane extr method | maximum | report only (mg/L) | Jun, Dec | 020 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | Jun, Dec | 020 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | Jun, Dec | 020 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) | Jun, Dec | 020 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | Jun, Dec | 020 |
| Iron, total recoverable | maximum | report only (mg/L) | Jun, Dec | 020 |
| Zinc, total recoverable | maximum | report only (mg/L) | Jun, Dec | 020 |
| Lead, total recoverable | maximum | report only (mg/L) | Jun, Dec | 020 |
| Chromium, total recoverable | maximum | report only (mg/L) | Jun, Dec | 020 |
| Copper, total recoverable | maximum | report only (mg/L) | Jun, Dec | 020 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | Jun, Dec | 020 |
| Chemical Oxygen Demand [COD] | maximum | report only (mg/L) | Jun, Dec | 020 |
| Storm water flow | maximum | report only (MGD) | Jun, Dec | 020 |
| Flow, total | semi-annual total | report only (Mgal/6mo) | Jun, Dec | 020 |
| pH | maximum | report only (SU) | Jun, Dec | 021 |
| Solids, total suspended | maximum | report only (mg/L) | Jun, Dec | 021 |
| Oil and grease, hexane extr method | maximum | report only (mg/L) | Jun, Dec | 021 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | Jun, Dec | 021 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | Jun, Dec | 021 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) | Jun, Dec | 021 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | Jun, Dec | 021 |
| Iron, total recoverable | maximum | report only (mg/L) | Jun, Dec | 021 |
| Zinc, total recoverable | maximum | report only (mg/L) | Jun, Dec | 021 |
| Lead, total recoverable | maximum | report only (mg/L) | Jun, Dec | 021 |
| Chromium, total recoverable | maximum | report only (mg/L) | Jun, Dec | 021 |
| Copper, total recoverable | maximum | report only (mg/L) | Jun, Dec | 021 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | Jun, Dec | 021 |
| Chemical Oxygen Demand [COD] | maximum | report only (mg/L) | Jun, Dec | 021 |
| Storm water flow | maximum | report only (MGD) | Jun, Dec | 021 |
| Flow, total | semi-annual total | report only (Mgal/6mo) | Jun, Dec | 021 |
| pH | maximum | report only (SU) | Jun, Dec | 022 |
| Solids, total suspended | maximum | report only (mg/L) | Jun, Dec | 022 |
| Oil and grease, hexane extr method | maximum | report only (mg/L) | Jun, Dec | 022 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | Jun, Dec | 022 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | Jun, Dec | 022 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) | Jun, Dec | 022 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | Jun, Dec | 022 |
| Iron, total recoverable | maximum | report only (mg/L) | Jun, Dec | 022 |
| Zinc, total recoverable | maximum | report only (mg/L) | Jun, Dec | 022 |
| Lead, total recoverable | maximum | report only (mg/L) | Jun, Dec | 022 |
| Chromium, total recoverable | maximum | report only (mg/L) | Jun, Dec | 022 |
| Copper, total recoverable | maximum | report only (mg/L) | Jun, Dec | 022 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | Jun, Dec | 022 |
| Chemical Oxygen Demand [COD] | maximum | report only (mg/L) | Jun, Dec | 022 |
| Storm water flow | maximum | report only (MGD) | Jun, Dec | 022 |
| Flow, total | semi-annual total | report only (Mgal/6mo) | Jun, Dec | 022 |
Cited limits by parameter: Indiana's rules and the federal ones.
Same industry: the 54 Primary Metal Industries permits in Indiana.
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