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Blast Furnaces And Steel Mills, major discharger, Gary, Indiana. NPDES permit IN0061077, in force until Jun 30, 2027. Last 12 months: no values over a limit, 5 required values missing, 1 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 5 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 10 mg/L | all year |
| Solids, total suspended | monthly average | report only (lb/d) | all year |
| Solids, total suspended | daily maximum | report only (lb/d) | all year |
| Oil and grease, hexane extr method | monthly average | ≤ 10 mg/L | all year |
| Oil and grease, hexane extr method | daily maximum | ≤ 15 mg/L | all year |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.6 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.6 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.2 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.3 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.8 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.8 lb/d | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.5 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.7 lb/d | Jan, Feb, Mar, Apr, Dec |
| Cyanide, free [as free] | monthly average | report only (mg/L) | all year |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | all year |
| Cyanide, free [as free] | monthly average | report only (lb/d) | all year |
| Cyanide, free [as free] | daily maximum | report only (lb/d) | all year |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year |
| Chloride [as Cl] | monthly average | report only (lb/d) | all year |
| Chloride [as Cl] | daily maximum | report only (lb/d) | all year |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year |
| Selenium, total recoverable | monthly average | report only (lb/d) | all year |
| Selenium, total recoverable | daily maximum | report only (lb/d) | all year |
| Thallium, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec |
| Thallium, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec |
| Thallium, total recoverable | monthly average | report only (lb/d) | Mar, Jun, Sep, Dec |
| Thallium, total recoverable | daily maximum | report only (lb/d) | Mar, Jun, Sep, Dec |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year |
| Nickel, total recoverable | monthly average | report only (lb/d) | all year |
| Nickel, total recoverable | daily maximum | report only (lb/d) | all year |
| Zinc, total recoverable | monthly average | ≤ 180 ug/L | all year |
| Zinc, total recoverable | daily maximum | ≤ 350 ug/L | all year |
| Zinc, total recoverable | monthly average | ≤ .33 lb/d | all year |
| Zinc, total recoverable | daily maximum | ≤ .64 lb/d | all year |
| Lead, total recoverable | monthly average | ≤ 59 ug/L | all year |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year |
| Lead, total recoverable | monthly average | report only (lb/d) | all year |
| Lead, total recoverable | daily maximum | report only (lb/d) | all year |
| Chromium, total recoverable | monthly average | report only (mg/L) | all year |
| Chromium, total recoverable | daily maximum | report only (mg/L) | all year |
| Chromium, total recoverable | monthly average | report only (lb/d) | all year |
| Chromium, total recoverable | daily maximum | report only (lb/d) | all year |
| Copper, total recoverable | monthly average | ≤ 21 ug/L | all year |
| Copper, total recoverable | daily maximum | ≤ 41 ug/L | all year |
| Copper, total recoverable | monthly average | ≤ .039 lb/d | all year |
| Copper, total recoverable | daily maximum | ≤ .075 lb/d | all year |
| Vanadium, total recoverable | monthly average | report only (ug/L) | all year |
| Vanadium, total recoverable | daily maximum | report only (ug/L) | all year |
| Vanadium, total recoverable | monthly average | report only (lb/d) | all year |
| Vanadium, total recoverable | daily maximum | report only (lb/d) | all year |
| Manganese, total recoverable | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec |
| Manganese, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Manganese, total recoverable | monthly average | report only (lb/d) | Mar, Jun, Sep, Dec |
| Manganese, total recoverable | daily maximum | report only (lb/d) | Mar, Jun, Sep, Dec |
| Benzene | monthly average | ≤ 5 ug/L | all year |
| Benzene | daily maximum | report only (ug/L) | all year |
| Benzene | monthly average | report only (lb/d) | all year |
| Benzene | daily maximum | report only (lb/d) | all year |
| Acenaphthylene | monthly average | report only (ug/L) | all year |
| Acenaphthylene | daily maximum | report only (ug/L) | all year |
| Acenaphthylene | monthly average | report only (lb/d) | all year |
| Acenaphthylene | daily maximum | report only (lb/d) | all year |
| Acenaphthene | monthly average | ≤ 6 ug/L | all year |
| Acenaphthene | daily maximum | report only (ug/L) | all year |
| Acenaphthene | monthly average | report only (lb/d) | all year |
| Acenaphthene | daily maximum | report only (lb/d) | all year |
| Anthracene | monthly average | report only (ug/L) | all year |
| Anthracene | daily maximum | report only (ug/L) | all year |
| Anthracene | monthly average | report only (lb/d) | all year |
| Anthracene | daily maximum | report only (lb/d) | all year |
| Chrysene | monthly average | report only (ug/L) | all year |
| Chrysene | daily maximum | report only (ug/L) | all year |
| Chrysene | monthly average | report only (lb/d) | all year |
| Chrysene | daily maximum | report only (lb/d) | all year |
| Fluorene | monthly average | ≤ 3 ug/L | all year |
| Fluorene | daily maximum | report only (ug/L) | all year |
| Fluorene | monthly average | report only (lb/d) | all year |
| Fluorene | daily maximum | report only (lb/d) | all year |
| Phenanthrene | monthly average | report only (ug/L) | all year |
| Phenanthrene | daily maximum | report only (ug/L) | all year |
| Phenanthrene | monthly average | report only (lb/d) | all year |
| Phenanthrene | daily maximum | report only (lb/d) | all year |
| 2,4-Dimethylphenol | monthly average | ≤ 8.6 ug/L | all year |
| 2,4-Dimethylphenol | daily maximum | report only (ug/L) | all year |
| 2,4-Dimethylphenol | monthly average | report only (lb/d) | all year |
| 2,4-Dimethylphenol | daily maximum | report only (lb/d) | all year |
| Naphthalene | monthly average | ≤ 5.1 ug/L | all year |
| Naphthalene | daily maximum | report only (ug/L) | all year |
| Naphthalene | monthly average | report only (lb/d) | all year |
| Naphthalene | daily maximum | report only (lb/d) | all year |
| Polychlorinated biphenyls [PCBs] | monthly average | ≤ .1 ug/L | all year |
| Polychlorinated biphenyls [PCBs] | daily maximum | ≤ .3 ug/L | all year |
| Polychlorinated biphenyls [PCBs] | monthly average | ≤ .00055 lb/d | all year |
| Polychlorinated biphenyls [PCBs] | daily maximum | ≤ .00055 lb/d | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| .alpha.-Terpineol | monthly average | report only (ug/L) | all year |
| .alpha.-Terpineol | daily maximum | report only (ug/L) | all year |
| .alpha.-Terpineol | monthly average | report only (lb/d) | all year |
| .alpha.-Terpineol | daily maximum | report only (lb/d) | all year |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jul |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jun |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jul |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jun |
| Mercury, total recoverable | monthly average | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec |
| Mercury, total recoverable | monthly average | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec |
| Mercury, total recoverable | daily maximum | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec |
| Pyridine | monthly average | report only (ug/L) | all year |
| Pyridine | daily maximum | report only (ug/L) | all year |
| Pyridine | monthly average | report only (lb/d) | all year |
| Pyridine | daily maximum | report only (lb/d) | all year |
| Aniline | monthly average | report only (ug/L) | all year |
| Aniline | daily maximum | report only (ug/L) | all year |
| Aniline | monthly average | report only (lb/d) | all year |
| Aniline | daily maximum | report only (lb/d) | all year |
| Benzoic acids, total | monthly average | report only (ug/L) | all year |
| Benzoic acids, total | daily maximum | report only (ug/L) | all year |
| Benzoic acids, total | monthly average | report only (lb/d) | all year |
| Benzoic acids, total | daily maximum | report only (lb/d) | all year |
| Naphthenic acid | monthly average | report only (ug/L) | all year |
| Naphthenic acid | daily maximum | report only (ug/L) | all year |
| Naphthenic acid | monthly average | report only (lb/d) | all year |
| Naphthenic acid | daily maximum | report only (lb/d) | all year |
| 4-Methylphenol | monthly average | report only (ug/L) | all year |
| 4-Methylphenol | daily maximum | report only (ug/L) | all year |
| 4-Methylphenol | monthly average | report only (lb/d) | all year |
| 4-Methylphenol | daily maximum | report only (lb/d) | all year |
| Dibenzofuran | monthly average | report only (ug/L) | all year |
| Dibenzofuran | daily maximum | report only (ug/L) | all year |
| Dibenzofuran | monthly average | report only (lb/d) | all year |
| Dibenzofuran | daily maximum | report only (lb/d) | all year |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
| TU Static 48Hr Acute Daphnia pulex | maximum | ≤ 1 tox acute | Jul |
| TU Static 48Hr Acute Daphnia pulex | maximum | ≤ 1 tox acute | Jun |
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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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/IN0061077 · MCP: https://passage-data.com/mcp