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Ship Building And Repairing, North Charleston, South Carolina. NPDES permit SC0047562 expired Jan 31, 2021; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 20 mg/L | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 001 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year | 001 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | monthly average | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | 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 |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 001 |
| 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 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 003 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 003 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 8.5 SU | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year | 003 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | 003 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 003 |
| Lead, total [as Pb] | monthly average | report only (mg/L) | all year | 003 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 003 |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | 003 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 003 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 20 mg/L | all year | 01A |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 01A |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 01A |
| pH | instantaneous maximum | ≤ 8.5 SU | all year | 01A |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year | 01A |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | 01A |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 01A |
| Lead, total [as Pb] | monthly average | report only (mg/L) | all year | 01A |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 01A |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | 01A |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 01A |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 01A |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 01A |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 20 mg/L | all year | 01B |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 01B |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 01B |
| pH | instantaneous maximum | ≤ 8.5 SU | all year | 01B |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year | 01B |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | 01B |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 01B |
| Lead, total [as Pb] | monthly average | report only (mg/L) | all year | 01B |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 01B |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | 01B |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 01B |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 01B |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 01B |
Cited limits by parameter: South Carolina's rules and the federal ones.
Same industry: the 3 Transportation Equipment permits in South Carolina.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/SC0047562 · MCP: https://passage-data.com/mcp