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Ship Building And Repairing, Sparrows Point, Maryland. NPDES permit MD0001180, in force until Jan 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year | 023 |
| pH | maximum | ≤ 8.5 SU | all year | 023 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 023 |
| Nitrogen, total [as N] | monthly average | report only (lb/mo) | all year | 023 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 023 |
| Nitrogen, organic total [as N] | monthly average | report only (mg/L) | all year | 023 |
| Nitrogen, organic total [as N] | daily maximum | report only (mg/L) | all year | 023 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 023 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 023 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 023 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 023 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 023 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 023 |
| Phosphorus, total [as P] | monthly average | report only (lb/mo) | all year | 023 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 023 |
| Cyanide, free [amenable to chlorination] | daily maximum | ≤ .001 mg/L | all year | 023 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 023 |
| Copper, dissolved [as Cu] | daily maximum | ≤ .0061 mg/L | all year | 023 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 023 |
| Benzene | monthly average | ≤ .51 mg/L | all year | 023 |
| Benzene | daily maximum | report only (mg/L) | all year | 023 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 023 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 023 |
| pH | minimum | ≥ 6.5 SU | all year | 026 |
| pH | maximum | ≤ 8.5 SU | all year | 026 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 026 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 026 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 026 |
| Zinc, total [as Zn] | daily maximum | ≤ .09 mg/L | all year | 026 |
| Aluminum, total recoverable | daily maximum | ≤ 1.1 mg/L | all year | 026 |
| Lead, total recoverable | daily maximum | ≤ .21 mg/L | all year | 026 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 026 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 026 |
| pH | minimum | ≥ 6.5 SU | all year | 027 |
| pH | maximum | ≤ 8.5 SU | all year | 027 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 027 |
| Hardness, total [as CaCO3] | daily maximum | ≤ 15 mg/L | all year | 027 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 027 |
| Zinc, total [as Zn] | daily maximum | ≤ .09 mg/L | all year | 027 |
| Aluminum, total recoverable | daily maximum | ≤ 1.1 mg/L | all year | 027 |
| Lead, total recoverable | daily maximum | ≤ .21 mg/L | all year | 027 |
| Flow, in conduit or thru treatment plant | quarterly average | report only (gal/d) | all year | 027 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 027 |
| pH | minimum | ≥ 6.5 SU | all year | 028 |
| pH | maximum | ≤ 8.5 SU | all year | 028 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 028 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 028 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 028 |
| Zinc, total [as Zn] | daily maximum | ≤ .9 mg/L | all year | 028 |
| Aluminum, total recoverable | daily maximum | ≤ 1.1 mg/L | all year | 028 |
| Lead, total recoverable | daily maximum | ≤ .21 mg/L | all year | 028 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | all year | 028 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 028 |
Cited limits by parameter: Maryland's rules and the federal ones.
Same industry: the 3 Transportation Equipment permits in Maryland.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MD0001180 · MCP: https://passage-data.com/mcp