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Refined Petroleum Pipelines, Woodbine, Maryland. NPDES permit MD0057886, in force until Aug 13, 2030. Last 12 months: over a limit 4 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Benzene, daily maximum | 17 ug/L | ≤ 5 ug/L | 240% |
| December 2025 | Benzene, ethylbenzene, toluene, xylene combination, daily maximum | 180 ug/L | ≤ 100 ug/L | 80% |
| December 2025 | Solids, total suspended, maximum annual average | 32 mg/L | ≤ 30 mg/L | 7% |
| March 2026 | Benzene, daily maximum | 7 ug/L | ≤ 5 ug/L | 40% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | maximum | ≤ 75 deg F | all year | 003 |
| Temperature, water deg. fahrenheit | maximum | ≤ 75 deg F | all year | 003 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 003 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 003 |
| pH | daily minimum | ≥ 6.5 SU | all year | 003 |
| pH | daily minimum | ≥ 6.5 SU | all year | 003 |
| pH | daily maximum | ≤ 8.5 SU | all year | 003 |
| pH | daily maximum | ≤ 8.5 SU | all year | 003 |
| Benzene, ethylbenzene, toluene, xylene combination | annual average | report only (ug/L) | all year | 003 |
| Benzene, ethylbenzene, toluene, xylene combination | annual average | report only (ug/L) | all year | 003 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ 100 ug/L | all year | 003 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ 100 ug/L | all year | 003 |
| Toluene | annual average | report only (ug/L) | all year | 003 |
| Toluene | annual average | report only (ug/L) | all year | 003 |
| Toluene | daily maximum | report only (ug/L) | all year | 003 |
| Toluene | daily maximum | report only (ug/L) | all year | 003 |
| Benzene | annual average | report only (ug/L) | all year | 003 |
| Benzene | annual average | report only (ug/L) | all year | 003 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 003 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 003 |
| Ethylbenzene | annual average | report only (ug/L) | all year | 003 |
| Ethylbenzene | annual average | report only (ug/L) | all year | 003 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 003 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 003 |
| Naphthalene | annual average | report only (ug/L) | all year | 003 |
| Naphthalene | annual average | report only (ug/L) | all year | 003 |
| Naphthalene | daily maximum | report only (ug/L) | all year | 003 |
| Naphthalene | daily maximum | report only (ug/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | annual average | report only (gal/d) | all year | 003 |
| Flow, in conduit or thru treatment plant | annual average | report only (gal/d) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 003 |
| Chlorine, total residual | annual average | report only (mg/L) | all year | 003 |
| Chlorine, total residual | annual average | report only (mg/L) | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 003 |
| Suspended Solids, Total | maximum annual average | ≤ 30 mg/L | all year | 003 |
| Suspended Solids, Total | maximum annual average | ≤ 30 mg/L | all year | 003 |
| Suspended Solids, Total | daily maximum | ≤ 60 mg/L | all year | 003 |
| Suspended Solids, Total | daily maximum | ≤ 60 mg/L | all year | 003 |
| Xylene [mix of m+o+p] | annual average | report only (ug/L) | all year | 003 |
| Xylene [mix of m+o+p] | annual average | report only (ug/L) | all year | 003 |
| Xylene [mix of m+o+p] | daily maximum | report only (ug/L) | all year | 003 |
| Xylene [mix of m+o+p] | daily maximum | report only (ug/L) | all year | 003 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 003 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 003 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 003 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 003 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 003 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 003 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 003 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 003 |
| Flow, total | annual average | report only (gal/d) | all year | 003 |
| Flow, total | annual average | report only (gal/d) | all year | 003 |
| Flow, total | daily maximum | report only (gal/d) | all year | 003 |
| Flow, total | daily maximum | report only (gal/d) | all year | 003 |
| Temperature, water deg. fahrenheit | maximum | ≤ 75 deg F | all year | 004 |
| Temperature, water deg. fahrenheit | maximum | ≤ 75 deg F | all year | 004 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 004 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 004 |
| pH | daily minimum | ≥ 6.5 SU | all year | 004 |
| pH | daily minimum | ≥ 6.5 SU | all year | 004 |
| pH | daily maximum | ≤ 8.5 SU | all year | 004 |
| pH | daily maximum | ≤ 8.5 SU | all year | 004 |
| Solids, total suspended | maximum annual average | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | maximum annual average | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 004 |
| Benzene, ethylbenzene, toluene, xylene combination | annual average | report only (ug/L) | all year | 004 |
| Benzene, ethylbenzene, toluene, xylene combination | annual average | report only (ug/L) | all year | 004 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ 100 ug/L | all year | 004 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ 100 ug/L | all year | 004 |
| Toluene | annual average | report only (ug/L) | all year | 004 |
| Toluene | annual average | report only (ug/L) | all year | 004 |
| Toluene | daily maximum | report only (ug/L) | all year | 004 |
| Toluene | daily maximum | report only (ug/L) | all year | 004 |
| Benzene | annual average | report only (ug/L) | all year | 004 |
| Benzene | annual average | report only (ug/L) | all year | 004 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 004 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 004 |
| Ethylbenzene | annual average | report only (ug/L) | all year | 004 |
| Ethylbenzene | annual average | report only (ug/L) | all year | 004 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 004 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 004 |
| Naphthalene | annual average | report only (ug/L) | all year | 004 |
| Naphthalene | annual average | report only (ug/L) | all year | 004 |
| Naphthalene | daily maximum | report only (ug/L) | all year | 004 |
| Naphthalene | daily maximum | report only (ug/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | annual average | report only (gal/d) | all year | 004 |
| Flow, in conduit or thru treatment plant | annual average | report only (gal/d) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 004 |
| Xylene [mix of m+o+p] | annual average | report only (ug/L) | all year | 004 |
| Xylene [mix of m+o+p] | annual average | report only (ug/L) | all year | 004 |
| Xylene [mix of m+o+p] | daily maximum | report only (ug/L) | all year | 004 |
| Xylene [mix of m+o+p] | daily maximum | report only (ug/L) | all year | 004 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 004 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 004 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 004 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 004 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 004 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 004 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 004 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 004 |
| Flow, total | annual average | report only (gal/d) | all year | 004 |
| Flow, total | annual average | report only (gal/d) | all year | 004 |
| Flow, total | daily maximum | report only (gal/d) | all year | 004 |
| Flow, total | daily maximum | report only (gal/d) | all year | 004 |
| Temperature, water deg. fahrenheit | maximum | ≤ 75 deg F | all year | 005 |
| Temperature, water deg. fahrenheit | maximum | ≤ 75 deg F | all year | 005 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 005 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 005 |
| pH | daily minimum | ≥ 6.5 SU | all year | 005 |
| pH | daily minimum | ≥ 6.5 SU | all year | 005 |
| pH | daily maximum | ≤ 8.5 SU | all year | 005 |
| pH | daily maximum | ≤ 8.5 SU | all year | 005 |
| Solids, total suspended | maximum annual average | ≤ 30 mg/L | all year | 005 |
| Solids, total suspended | maximum annual average | ≤ 30 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 005 |
| Benzene, ethylbenzene, toluene, xylene combination | annual average | report only (ug/L) | all year | 005 |
| Benzene, ethylbenzene, toluene, xylene combination | annual average | report only (ug/L) | all year | 005 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ 100 ug/L | all year | 005 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ 100 ug/L | all year | 005 |
| Toluene | annual average | report only (ug/L) | all year | 005 |
| Toluene | annual average | report only (ug/L) | all year | 005 |
| Toluene | daily maximum | report only (ug/L) | all year | 005 |
| Toluene | daily maximum | report only (ug/L) | all year | 005 |
| Benzene | annual average | report only (ug/L) | all year | 005 |
| Benzene | annual average | report only (ug/L) | all year | 005 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 005 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 005 |
| Ethylbenzene | annual average | report only (ug/L) | all year | 005 |
| Ethylbenzene | annual average | report only (ug/L) | all year | 005 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 005 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 005 |
| Naphthalene | annual average | report only (ug/L) | all year | 005 |
| Naphthalene | annual average | report only (ug/L) | all year | 005 |
| Naphthalene | daily maximum | report only (ug/L) | all year | 005 |
| Naphthalene | daily maximum | report only (ug/L) | all year | 005 |
| Flow, in conduit or thru treatment plant | annual average | report only (gal/d) | all year | 005 |
| Flow, in conduit or thru treatment plant | annual average | report only (gal/d) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 005 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 005 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 005 |
| Xylene [mix of m+o+p] | annual average | report only (ug/L) | all year | 005 |
| Xylene [mix of m+o+p] | annual average | report only (ug/L) | all year | 005 |
| Xylene [mix of m+o+p] | daily maximum | report only (ug/L) | all year | 005 |
| Xylene [mix of m+o+p] | daily maximum | report only (ug/L) | all year | 005 |
| Hydrocarbons, total petroleum | annual average | report only (ug/L) | all year | 005 |
| Hydrocarbons, total petroleum | annual average | report only (ug/L) | all year | 005 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 005 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 005 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 ug/L | all year | 005 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 ug/L | all year | 005 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 005 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 005 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 005 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 005 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 005 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 005 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 005 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 005 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 005 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 005 |
| Flow, total | annual average | report only (gal/d) | all year | 005 |
| Flow, total | annual average | report only (gal/d) | all year | 005 |
| Flow, total | daily maximum | report only (gal/d) | all year | 005 |
| Flow, total | daily maximum | report only (gal/d) | all year | 005 |
| Temperature, water deg. fahrenheit | maximum | ≤ 75 deg F | all year | 101 |
| Temperature, water deg. fahrenheit | maximum | ≤ 75 deg F | all year | 101 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 101 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 101 |
| pH | daily minimum | ≥ 6.5 SU | all year | 101 |
| pH | daily minimum | ≥ 6.5 SU | all year | 101 |
| pH | daily maximum | ≤ 8.5 SU | all year | 101 |
| pH | daily maximum | ≤ 8.5 SU | all year | 101 |
| Solids, total suspended | maximum annual average | ≤ 30 mg/L | all year | 101 |
| Solids, total suspended | maximum annual average | ≤ 30 mg/L | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 101 |
| Benzene, ethylbenzene, toluene, xylene combination | annual average | report only (ug/L) | all year | 101 |
| Benzene, ethylbenzene, toluene, xylene combination | annual average | report only (ug/L) | all year | 101 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ 100 ug/L | all year | 101 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ 100 ug/L | all year | 101 |
| Toluene | annual average | report only (mg/L) | all year | 101 |
| Toluene | annual average | report only (mg/L) | all year | 101 |
| Toluene | daily maximum | report only (mg/L) | all year | 101 |
| Toluene | daily maximum | report only (mg/L) | all year | 101 |
| Benzene | annual average | report only (ug/L) | all year | 101 |
| Benzene | annual average | report only (ug/L) | all year | 101 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 101 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 101 |
| Ethylbenzene | annual average | report only (mg/L) | all year | 101 |
| Ethylbenzene | annual average | report only (mg/L) | all year | 101 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 101 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 101 |
| Naphthalene | annual average | report only (mg/L) | all year | 101 |
| Naphthalene | annual average | report only (mg/L) | all year | 101 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 101 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 101 |
| Flow, in conduit or thru treatment plant | annual average | report only (gal/d) | all year | 101 |
| Flow, in conduit or thru treatment plant | annual average | report only (gal/d) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 101 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 101 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 101 |
| Xylene [mix of m+o+p] | annual average | report only (mg/L) | all year | 101 |
| Xylene [mix of m+o+p] | annual average | report only (mg/L) | all year | 101 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 101 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 101 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 101 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 101 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 101 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 101 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 101 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 101 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 101 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 101 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 101 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 101 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 101 |
| Hydrocarbons, total petroleum | annual average | report only (mg/L) | all year | 101 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 101 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 101 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 101 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 15 mg/L | all year | 101 |
| Flow, total | annual average | report only (gal/d) | all year | 101 |
| Flow, total | annual average | report only (gal/d) | all year | 101 |
| Flow, total | daily maximum | report only (gal/d) | all year | 101 |
| Flow, total | daily maximum | report only (gal/d) | all year | 101 |
Cited limits by parameter: Maryland's rules and the federal ones.
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