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Blast Furnaces And Steel Mills, major discharger, East Chicago, Indiana. NPDES permit IN0000205, in force until Jan 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Flow rate | daily maximum | report only (MGD) | all year | 000 |
| Flow rate | daily maximum | report only (MGD) | all year | 000 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 002 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 002 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 002 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ .016 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | < .06 mg/L | all year | 002 |
| Chlorine, total residual | monthly average | ≤ 1.7 lb/d | all year | 002 |
| Chlorine, total residual | daily maximum | < 6.3 lb/d | all year | 002 |
| Mercury, total recoverable | monthly average | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 002 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 002 |
| Mercury, total recoverable | monthly average | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec | 002 |
| Mercury, total recoverable | daily maximum | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec | 002 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 009 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 009 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 009 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 009 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 009 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 009 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 009 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 009 |
| pH | daily minimum | ≥ 6 SU | all year | 009 |
| pH | daily minimum | ≥ 6 SU | all year | 009 |
| pH | daily maximum | ≤ 9 SU | all year | 009 |
| pH | daily maximum | ≤ 9 SU | all year | 009 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 009 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 009 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 009 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 009 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 009 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 009 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 009 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 009 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 009 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 009 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 009 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 009 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | 009 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | 009 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | 009 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | 009 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 009 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 009 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.4 mg/L | all year | 009 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.8 mg/L | all year | 009 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 009 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 009 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 009 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 009 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 425 lb/d | all year | 009 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1000 lb/d | all year | 009 |
| Zinc, total recoverable | monthly average | ≤ 170 ug/L | all year | 009 |
| Zinc, total recoverable | daily maximum | ≤ 330 ug/L | all year | 009 |
| Zinc, total recoverable | monthly average | ≤ 51 lb/d | all year | 009 |
| Zinc, total recoverable | daily maximum | ≤ 99 lb/d | all year | 009 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 009 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 009 |
| Lead, total recoverable | monthly average | report only (lb/d) | all year | 009 |
| Lead, total recoverable | daily maximum | report only (lb/d) | all year | 009 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 009 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 009 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 009 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 009 |
| Phenolics, total recoverable | monthly average | report only (lb/d) | all year | 009 |
| Phenolics, total recoverable | daily maximum | report only (lb/d) | all year | 009 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 009 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 009 |
| Phenolics, total recoverable | monthly average | report only (lb/d) | all year | 009 |
| Phenolics, total recoverable | daily maximum | ≤ 11 lb/d | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Chlorine, total residual | monthly average | ≤ .014 mg/L | all year | 009 |
| Chlorine, total residual | monthly average | ≤ .014 mg/L | all year | 009 |
| Chlorine, total residual | daily maximum | < .06 mg/L | all year | 009 |
| Chlorine, total residual | daily maximum | < .06 mg/L | all year | 009 |
| Chlorine, total residual | monthly average | ≤ 4.2 lb/d | all year | 009 |
| Chlorine, total residual | monthly average | ≤ 4.2 lb/d | all year | 009 |
| Chlorine, total residual | daily maximum | < 18 lb/d | all year | 009 |
| Chlorine, total residual | daily maximum | < 18 lb/d | all year | 009 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Feb, Aug | 009 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jan, Jul | 009 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 2.8 tox chronic | Feb, Aug | 009 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 2.8 tox chronic | Jan, Jul | 009 |
| Mercury, total recoverable | annual average | ≤ 1.8 ng/L | Feb, Apr, Jun, Aug, Oct, Dec | 009 |
| Mercury, total recoverable | annual average | ≤ 1.8 ng/L | Feb, Apr, Jun, Aug, Oct, Dec | 009 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 009 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 009 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 009 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 009 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 010 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 010 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 010 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 010 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 010 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 010 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 010 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 010 |
| pH | daily minimum | ≥ 6 SU | all year | 010 |
| pH | daily minimum | ≥ 6 SU | all year | 010 |
| pH | daily maximum | ≤ 9 SU | all year | 010 |
| pH | daily maximum | ≤ 9 SU | all year | 010 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 010 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 010 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 010 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 010 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 010 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 010 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 010 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 010 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 010 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 010 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 010 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 010 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | 010 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | 010 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | 010 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | 010 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 010 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 010 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 010 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 010 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 010 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 010 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 010 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 010 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 100 lb/d | all year | 010 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 300 lb/d | all year | 010 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 010 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 010 |
| Zinc, total recoverable | monthly average | report only (lb/d) | all year | 010 |
| Zinc, total recoverable | daily maximum | report only (lb/d) | all year | 010 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 010 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 010 |
| Lead, total recoverable | monthly average | report only (lb/d) | all year | 010 |
| Lead, total recoverable | daily maximum | report only (lb/d) | all year | 010 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 010 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 010 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 010 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 010 |
| Phenolics, total recoverable | monthly average | report only (lb/d) | all year | 010 |
| Phenolics, total recoverable | daily maximum | report only (lb/d) | all year | 010 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 010 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 010 |
| Phenolics, total recoverable | monthly average | report only (lb/d) | all year | 010 |
| Phenolics, total recoverable | daily maximum | ≤ 5 lb/d | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| Chlorine, total residual | monthly average | < .014 mg/L | all year | 010 |
| Chlorine, total residual | monthly average | ≤ .014 mg/L | all year | 010 |
| Chlorine, total residual | daily maximum | < .06 mg/L | all year | 010 |
| Chlorine, total residual | daily maximum | < .06 mg/L | all year | 010 |
| Chlorine, total residual | monthly average | ≤ 4.1 lb/d | all year | 010 |
| Chlorine, total residual | monthly average | ≤ 4.1 lb/d | all year | 010 |
| Chlorine, total residual | daily maximum | < 18 lb/d | all year | 010 |
| Chlorine, total residual | daily maximum | < 18 lb/d | all year | 010 |
| Mercury, total recoverable | annual average | ≤ 1.5 ng/L | Feb, Apr, Jun, Aug, Oct, Dec | 010 |
| Mercury, total recoverable | annual average | ≤ 1.5 ng/L | Feb, Apr, Jun, Aug, Oct, Dec | 010 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 010 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 010 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 010 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 010 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 011 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 011 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 011 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 011 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 011 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 011 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 011 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 011 |
| pH | daily minimum | ≥ 6 SU | all year | 011 |
| pH | daily minimum | ≥ 6 SU | all year | 011 |
| pH | daily maximum | ≤ 9 SU | all year | 011 |
| pH | daily maximum | ≤ 9 SU | all year | 011 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 011 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 011 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 011 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 011 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 011 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 011 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 011 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 011 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 011 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 011 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 011 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 011 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | 011 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | 011 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | 011 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | 011 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 011 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 011 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 011 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 011 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 011 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 75 lb/d | all year | 011 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 150 lb/d | all year | 011 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 011 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 011 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 011 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 011 |
| Zinc, total recoverable | monthly average | report only (lb/d) | all year | 011 |
| Zinc, total recoverable | monthly average | report only (lb/d) | all year | 011 |
| Zinc, total recoverable | daily maximum | report only (lb/d) | all year | 011 |
| Zinc, total recoverable | daily maximum | report only (lb/d) | all year | 011 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 011 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 011 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 011 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 011 |
| Lead, total recoverable | monthly average | report only (lb/d) | all year | 011 |
| Lead, total recoverable | monthly average | report only (lb/d) | all year | 011 |
| Lead, total recoverable | daily maximum | report only (lb/d) | all year | 011 |
| Lead, total recoverable | daily maximum | report only (lb/d) | all year | 011 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 011 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 011 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 011 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 011 |
| Phenolics, total recoverable | monthly average | report only (lb/d) | all year | 011 |
| Phenolics, total recoverable | daily maximum | report only (lb/d) | all year | 011 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 011 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 011 |
| Phenolics, total recoverable | monthly average | report only (lb/d) | all year | 011 |
| Phenolics, total recoverable | daily maximum | ≤ 5 lb/d | all year | 011 |
| Oxidants, total residual | monthly average | ≤ .74 ug/L | all year | 011 |
| Oxidants, total residual | monthly average | ≤ .74 ug/L | all year | 011 |
| Oxidants, total residual | daily maximum | ≤ 60 ug/L | all year | 011 |
| Oxidants, total residual | daily maximum | ≤ 60 ug/L | all year | 011 |
| Oxidants, total residual | monthly average | ≤ .19 lb/d | all year | 011 |
| Oxidants, total residual | monthly average | ≤ .19 lb/d | all year | 011 |
| Oxidants, total residual | daily maximum | ≤ 15.4 lb/d | all year | 011 |
| Oxidants, total residual | daily maximum | ≤ 15 lb/d | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Feb, Aug | 011 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jan, Jul | 011 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 4.1 tox chronic | Feb, Aug | 011 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 4.1 tox chronic | Jan, Jul | 011 |
| Mercury, total recoverable | monthly average | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 011 |
| Mercury, total recoverable | monthly average | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 011 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 011 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 011 |
| Mercury, total recoverable | monthly average | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec | 011 |
| Mercury, total recoverable | monthly average | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec | 011 |
| Mercury, total recoverable | daily maximum | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec | 011 |
| Mercury, total recoverable | daily maximum | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec | 011 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 011 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 011 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 509 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 509 |
| Solids, total suspended | monthly average | ≤ 364 lb/d | all year | 509 |
| Solids, total suspended | daily maximum | ≤ 1100 lb/d | all year | 509 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 509 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 509 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 509 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 509 |
| Cyanide, total [as CN] | monthly average | report only (mg/L) | all year | 509 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 509 |
| Cyanide, total [as CN] | monthly average | ≤ 12.3 lb/d | all year | 509 |
| Cyanide, total [as CN] | daily maximum | ≤ 24.5 lb/d | all year | 509 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 509 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 509 |
| Zinc, total recoverable | monthly average | ≤ 1.83 lb/d | all year | 509 |
| Zinc, total recoverable | daily maximum | ≤ 5.52 lb/d | all year | 509 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 509 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 509 |
| Lead, total recoverable | monthly average | ≤ 1.23 lb/d | all year | 509 |
| Lead, total recoverable | daily maximum | ≤ 3.68 lb/d | all year | 509 |
| Phenolics, total recoverable | monthly average | report only (mg/L) | all year | 509 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 509 |
| Phenolics, total recoverable | monthly average | report only (lb/d) | all year | 509 |
| Phenolics, total recoverable | daily maximum | report only (lb/d) | all year | 509 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 509 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 509 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 701 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 701 |
| Solids, total suspended | monthly average | ≤ 31.6 lb/d | all year | 701 |
| Solids, total suspended | daily maximum | ≤ 88.3 lb/d | all year | 701 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 701 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 701 |
| Zinc, total recoverable | monthly average | ≤ .568 lb/d | all year | 701 |
| Zinc, total recoverable | daily maximum | ≤ 1.71 lb/d | all year | 701 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 701 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 701 |
| Lead, total recoverable | monthly average | ≤ .379 lb/d | all year | 701 |
| Lead, total recoverable | daily maximum | ≤ 1.14 lb/d | all year | 701 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 701 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 701 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 702 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 702 |
| Solids, total suspended | monthly average | ≤ 51.4 lb/d | all year | 702 |
| Solids, total suspended | daily maximum | ≤ 144 lb/d | all year | 702 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 702 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 702 |
| Oil and grease, hexane extr method | monthly average | ≤ 20.5 lb/d | all year | 702 |
| Oil and grease, hexane extr method | daily maximum | ≤ 61.7 lb/d | all year | 702 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 702 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 702 |
| Zinc, total recoverable | monthly average | ≤ .924 lb/d | all year | 702 |
| Zinc, total recoverable | daily maximum | ≤ 2.78 lb/d | all year | 702 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 702 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 702 |
| Lead, total recoverable | monthly average | ≤ .617 lb/d | all year | 702 |
| Lead, total recoverable | daily maximum | ≤ 1.85 lb/d | all year | 702 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 702 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 702 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Velocity of intake, maximum hourly average | 0.5 ft/sec | new | — | — |
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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