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Marine Cargo Handling, Baltimore, Maryland. NPDES permit MD0066818, in force until Jan 31, 2030. Last 12 months: no values over a limit, 18 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 26 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 52 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Cyanide, total [as CN] | monthly average | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | monthly average | ≤ .05 mg/L | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .1 mg/L | all year | 001 |
| Chromium, total [as Cr] | monthly average | ≤ 1.71 mg/L | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ 2.77 mg/L | all year | 001 |
| Copper, dissolved [as Cu] | monthly average | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | 001 |
| Nickel, dissolved [as Ni] | monthly average | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | monthly average | 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 |
| Cyanide, free available | monthly average | ≤ .049 mg/L | all year | 001 |
| Cyanide, free available | daily maximum | ≤ .049 mg/L | all year | 001 |
| Chromium, hexavalent [as Cr] | value | ≤ .55 mg/L (alert, not enforceable) | all year | 006 |
| Chromium, hexavalent [as Cr] | value | ≤ .55 mg/L (alert, not enforceable) | all year | 006 |
| Chromium, hexavalent [as Cr] | value | ≤ .55 mg/L (alert, not enforceable) | all year | 006 |
| Chromium, hexavalent [as Cr] | value | ≤ .55 mg/L (alert, not enforceable) | all year | 006 |
| Chromium, total [as Cr] | value | report only (mg/L) | all year | 006 |
| Chromium, total [as Cr] | value | report only (mg/L) | all year | 006 |
| Chromium, total [as Cr] | value | report only (mg/L) | all year | 006 |
| Chromium, total [as Cr] | value | report only (mg/L) | all year | 006 |
| Flow, in conduit or thru treatment plant | value | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | value | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | value | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | value | report only (MGD) | all year | 006 |
| Chromium, hexavalent [as Cr] | value | ≤ .55 mg/L (alert, not enforceable) | all year | 013 |
| Chromium, hexavalent [as Cr] | value | ≤ .55 mg/L (alert, not enforceable) | all year | 013 |
| Chromium, hexavalent [as Cr] | value | ≤ .55 mg/L (alert, not enforceable) | all year | 013 |
| Chromium, hexavalent [as Cr] | value | ≤ .55 mg/L (alert, not enforceable) | all year | 013 |
| Chromium, total [as Cr] | value | report only (mg/L) | all year | 013 |
| Chromium, total [as Cr] | value | report only (mg/L) | all year | 013 |
| Chromium, total [as Cr] | value | report only (mg/L) | all year | 013 |
| Chromium, total [as Cr] | value | report only (mg/L) | all year | 013 |
| Flow, in conduit or thru treatment plant | value | report only (MGD) | all year | 013 |
| Flow, in conduit or thru treatment plant | value | report only (MGD) | all year | 013 |
| Flow, in conduit or thru treatment plant | value | report only (MGD) | all year | 013 |
| Flow, in conduit or thru treatment plant | value | report only (MGD) | all year | 013 |
Cited limits by parameter: Maryland's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/MD0066818 · MCP: https://passage-data.com/mcp