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Gray And Ductile Iron Foundries, Bessemer, Alabama. NPDES permit AL0003271 expired Aug 31, 2025; its limits still apply. Last 12 months: over a limit 2 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| May 2026 | Oil & Grease, daily maximum | 37.4 | ≤ 12 mg/L | 212% |
| May 2026 | Oil & Grease, monthly average | 4.68 | ≤ 4 mg/L | 17% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 001 |
| pH | daily minimum | ≥ 7 SU | all year | 001 |
| pH | daily maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 5.99 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 15.2 mg/L | all year | 001 |
| Solids, total suspended | annual average | ≤ 2503 lb/yr | all year | 001 |
| Oil & Grease | monthly average | ≤ 4 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 12 mg/L | all year | 001 |
| Oil & Grease | annual average | ≤ 1250 lb/yr | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9 mg/L | all year | 001 |
| Copper, total [as Cu] | monthly average | ≤ .064 mg/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ .116 mg/L | all year | 001 |
| Copper, total [as Cu] | annual average | ≤ 16.26 lb/yr | all year | 001 |
| Lead, total [as Pb] | monthly average | ≤ .12 mg/L | all year | 001 |
| Lead, total [as Pb] | daily maximum | ≤ .245 mg/L | all year | 001 |
| Lead, total [as Pb] | annual average | ≤ 43.04 lb/yr | all year | 001 |
| Zinc, total [as Zn] | monthly average | ≤ .172 mg/L | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ .453 mg/L | all year | 001 |
| Zinc, total [as Zn] | annual average | ≤ 76.08 lb/yr | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 0 pass=0;fail=1 | all year | 001 |
| Phenolic compounds, total | monthly average | ≤ .038 mg/L | all year | 001 |
| Phenolic compounds, total | daily maximum | ≤ .108 mg/L | all year | 001 |
| Phenolic compounds, total | annual average | ≤ 15.76 lb/d | all year | 001 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 37.5 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 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 002 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 002 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Silver total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Organics, total toxic [TTO] | 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 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 003 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 003 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Silver total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Organics, total toxic [TTO] | 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 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 004 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 004 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Silver total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Organics, total toxic [TTO] | daily maximum | report only (mg/L) | all year | 004 |
| pH | daily minimum | report only (SU) | all year | 005 |
| pH | daily maximum | report only (SU) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 005 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 005 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Silver total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Organics, total toxic [TTO] | daily maximum | report only (mg/L) | all year | 005 |
| pH | daily minimum | report only (SU) | all year | 006 |
| pH | daily maximum | report only (SU) | all year | 006 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 006 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 006 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 006 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 006 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Silver total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Organics, total toxic [TTO] | daily maximum | report only (mg/L) | all year | 006 |
| 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 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 007 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 007 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 007 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Silver total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Organics, total toxic [TTO] | daily maximum | report only (mg/L) | all year | 007 |
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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