COLONIAL PIPELINE COMPANY

NPDES permit MD0057886 · Minor NON-POTW · effective, expires 2030-08-13 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

4values over a limit
0required values missing, on 0 form(s)
0of 16 forms filed late

Last period with anything received: 2026-06-30. Most often over: Benzene (2), Benzene, ethylbenzene, toluene, xylene combination (1), Solids, total suspended (1).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MD permits in EPA's filings — check your permit).

Limits in force (250)

OutfallParameterStatisticLimitMonths
003Temperature, water deg. fahrenheitMAXIMUM <= 75 deg F all year
003Temperature, water deg. fahrenheitMAXIMUM <= 75 deg F all year
003Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
003Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MX <= 8.5 SU all year
003pHDAILY MX <= 8.5 SU all year
003Benzene, ethylbenzene, toluene, xylene combinationANNL AVG report only all year
003Benzene, ethylbenzene, toluene, xylene combinationANNL AVG report only all year
003Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 100 ug/L all year
003Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 100 ug/L all year
003TolueneANNL AVG report only all year
003TolueneANNL AVG report only all year
003TolueneDAILY MX report only all year
003TolueneDAILY MX report only all year
003BenzeneANNL AVG report only all year
003BenzeneANNL AVG report only all year
003BenzeneDAILY MX <= 5 ug/L all year
003BenzeneDAILY MX <= 5 ug/L all year
003EthylbenzeneANNL AVG report only all year
003EthylbenzeneANNL AVG report only all year
003EthylbenzeneDAILY MX report only all year
003EthylbenzeneDAILY MX report only all year
003NaphthaleneANNL AVG report only all year
003NaphthaleneANNL AVG report only all year
003NaphthaleneDAILY MX report only all year
003NaphthaleneDAILY MX report only all year
003Flow, in conduit or thru treatment plantANNL AVG report only all year
003Flow, in conduit or thru treatment plantANNL AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Chlorine, total residualANNL AVG report only all year
003Chlorine, total residualANNL AVG report only all year
003Chlorine, total residualDAILY MX <= .1 mg/L all year
003Chlorine, total residualDAILY MX <= .1 mg/L all year
003Suspended Solids, TotalAX <= 30 mg/L all year
003Suspended Solids, TotalAX <= 30 mg/L all year
003Suspended Solids, TotalDAILY MX <= 60 mg/L all year
003Suspended Solids, TotalDAILY MX <= 60 mg/L all year
003Xylene [mix of m+o+p]ANNL AVG report only all year
003Xylene [mix of m+o+p]ANNL AVG report only all year
003Xylene [mix of m+o+p]DAILY MX report only all year
003Xylene [mix of m+o+p]DAILY MX report only all year
003Hydrocarbons, total petroleumANNL AVG report only all year
003Hydrocarbons, total petroleumANNL AVG report only all year
003Hydrocarbons, total petroleumANNL AVG report only all year
003Hydrocarbons, total petroleumANNL AVG report only all year
003Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
003Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
003Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
003Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
003Hydrocarbons, total petroleumANNL AVG report only all year
003Hydrocarbons, total petroleumANNL AVG report only all year
003Hydrocarbons, total petroleumANNL AVG report only all year
003Hydrocarbons, total petroleumANNL AVG report only all year
003Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
003Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
003Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
003Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
003Flow, totalANNL AVG report only all year
003Flow, totalANNL AVG report only all year
003Flow, totalDAILY MX report only all year
003Flow, totalDAILY MX report only all year
004Temperature, water deg. fahrenheitMAXIMUM <= 75 deg F all year
004Temperature, water deg. fahrenheitMAXIMUM <= 75 deg F all year
004Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
004Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
004pHDAILY MN >= 6.5 SU all year
004pHDAILY MN >= 6.5 SU all year
004pHDAILY MX <= 8.5 SU all year
004pHDAILY MX <= 8.5 SU all year
004Solids, total suspendedAX <= 30 mg/L all year
004Solids, total suspendedAX <= 30 mg/L all year
004Solids, total suspendedDAILY MX <= 60 mg/L all year
004Solids, total suspendedDAILY MX <= 60 mg/L all year
004Benzene, ethylbenzene, toluene, xylene combinationANNL AVG report only all year
004Benzene, ethylbenzene, toluene, xylene combinationANNL AVG report only all year
004Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 100 ug/L all year
004Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 100 ug/L all year
004TolueneANNL AVG report only all year
004TolueneANNL AVG report only all year
004TolueneDAILY MX report only all year
004TolueneDAILY MX report only all year
004BenzeneANNL AVG report only all year
004BenzeneANNL AVG report only all year
004BenzeneDAILY MX <= 5 ug/L all year
004BenzeneDAILY MX <= 5 ug/L all year
004EthylbenzeneANNL AVG report only all year
004EthylbenzeneANNL AVG report only all year
004EthylbenzeneDAILY MX report only all year
004EthylbenzeneDAILY MX report only all year
004NaphthaleneANNL AVG report only all year
004NaphthaleneANNL AVG report only all year
004NaphthaleneDAILY MX report only all year
004NaphthaleneDAILY MX report only all year
004Flow, in conduit or thru treatment plantANNL AVG report only all year
004Flow, in conduit or thru treatment plantANNL AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Chlorine, total residualDAILY MX <= .1 mg/L all year
004Chlorine, total residualDAILY MX <= .1 mg/L all year
004Xylene [mix of m+o+p]ANNL AVG report only all year
004Xylene [mix of m+o+p]ANNL AVG report only all year
004Xylene [mix of m+o+p]DAILY MX report only all year
004Xylene [mix of m+o+p]DAILY MX report only all year
004Hydrocarbons, total petroleumANNL AVG report only all year
004Hydrocarbons, total petroleumANNL AVG report only all year
004Hydrocarbons, total petroleumANNL AVG report only all year
004Hydrocarbons, total petroleumANNL AVG report only all year
004Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
004Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
004Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
004Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
004Hydrocarbons, total petroleumANNL AVG report only all year
004Hydrocarbons, total petroleumANNL AVG report only all year
004Hydrocarbons, total petroleumANNL AVG report only all year
004Hydrocarbons, total petroleumANNL AVG report only all year
004Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
004Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
004Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
004Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
004Flow, totalANNL AVG report only all year
004Flow, totalANNL AVG report only all year
004Flow, totalDAILY MX report only all year
004Flow, totalDAILY MX report only all year
005Temperature, water deg. fahrenheitMAXIMUM <= 75 deg F all year
005Temperature, water deg. fahrenheitMAXIMUM <= 75 deg F all year
005Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
005Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
005pHDAILY MN >= 6.5 SU all year
005pHDAILY MN >= 6.5 SU all year
005pHDAILY MX <= 8.5 SU all year
005pHDAILY MX <= 8.5 SU all year
005Solids, total suspendedAX <= 30 mg/L all year
005Solids, total suspendedAX <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 60 mg/L all year
005Solids, total suspendedDAILY MX <= 60 mg/L all year
005Benzene, ethylbenzene, toluene, xylene combinationANNL AVG report only all year
005Benzene, ethylbenzene, toluene, xylene combinationANNL AVG report only all year
005Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 100 ug/L all year
005Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 100 ug/L all year
005TolueneANNL AVG report only all year
005TolueneANNL AVG report only all year
005TolueneDAILY MX report only all year
005TolueneDAILY MX report only all year
005BenzeneANNL AVG report only all year
005BenzeneANNL AVG report only all year
005BenzeneDAILY MX <= 5 ug/L all year
005BenzeneDAILY MX <= 5 ug/L all year
005EthylbenzeneANNL AVG report only all year
005EthylbenzeneANNL AVG report only all year
005EthylbenzeneDAILY MX report only all year
005EthylbenzeneDAILY MX report only all year
005NaphthaleneANNL AVG report only all year
005NaphthaleneANNL AVG report only all year
005NaphthaleneDAILY MX report only all year
005NaphthaleneDAILY MX report only all year
005Flow, in conduit or thru treatment plantANNL AVG report only all year
005Flow, in conduit or thru treatment plantANNL AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Chlorine, total residualDAILY MX <= .1 mg/L all year
005Chlorine, total residualDAILY MX <= .1 mg/L all year
005Xylene [mix of m+o+p]ANNL AVG report only all year
005Xylene [mix of m+o+p]ANNL AVG report only all year
005Xylene [mix of m+o+p]DAILY MX report only all year
005Xylene [mix of m+o+p]DAILY MX report only all year
005Hydrocarbons, total petroleumANNL AVG report only all year
005Hydrocarbons, total petroleumANNL AVG report only all year
005Hydrocarbons, total petroleumANNL AVG report only all year
005Hydrocarbons, total petroleumANNL AVG report only all year
005Hydrocarbons, total petroleumDAILY MX <= 15 ug/L all year
005Hydrocarbons, total petroleumDAILY MX <= 15 ug/L all year
005Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
005Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
005Hydrocarbons, total petroleumANNL AVG report only all year
005Hydrocarbons, total petroleumANNL AVG report only all year
005Hydrocarbons, total petroleumANNL AVG report only all year
005Hydrocarbons, total petroleumANNL AVG report only all year
005Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
005Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
005Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
005Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
005Flow, totalANNL AVG report only all year
005Flow, totalANNL AVG report only all year
005Flow, totalDAILY MX report only all year
005Flow, totalDAILY MX report only all year
101Temperature, water deg. fahrenheitMAXIMUM <= 75 deg F all year
101Temperature, water deg. fahrenheitMAXIMUM <= 75 deg F all year
101Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
101Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
101pHDAILY MN >= 6.5 SU all year
101pHDAILY MN >= 6.5 SU all year
101pHDAILY MX <= 8.5 SU all year
101pHDAILY MX <= 8.5 SU all year
101Solids, total suspendedAX <= 30 mg/L all year
101Solids, total suspendedAX <= 30 mg/L all year
101Solids, total suspendedDAILY MX <= 60 mg/L all year
101Solids, total suspendedDAILY MX <= 60 mg/L all year
101Benzene, ethylbenzene, toluene, xylene combinationANNL AVG report only all year
101Benzene, ethylbenzene, toluene, xylene combinationANNL AVG report only all year
101Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 100 ug/L all year
101Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 100 ug/L all year
101TolueneANNL AVG report only all year
101TolueneANNL AVG report only all year
101TolueneDAILY MX report only all year
101TolueneDAILY MX report only all year
101BenzeneANNL AVG report only all year
101BenzeneANNL AVG report only all year
101BenzeneDAILY MX <= 5 ug/L all year
101BenzeneDAILY MX <= 5 ug/L all year
101EthylbenzeneANNL AVG report only all year
101EthylbenzeneANNL AVG report only all year
101EthylbenzeneDAILY MX report only all year
101EthylbenzeneDAILY MX report only all year
101NaphthaleneANNL AVG report only all year
101NaphthaleneANNL AVG report only all year
101NaphthaleneDAILY MX report only all year
101NaphthaleneDAILY MX report only all year
101Flow, in conduit or thru treatment plantANNL AVG report only all year
101Flow, in conduit or thru treatment plantANNL AVG report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
101Chlorine, total residualDAILY MX <= .1 mg/L all year
101Chlorine, total residualDAILY MX <= .1 mg/L all year
101Xylene [mix of m+o+p]ANNL AVG report only all year
101Xylene [mix of m+o+p]ANNL AVG report only all year
101Xylene [mix of m+o+p]DAILY MX report only all year
101Xylene [mix of m+o+p]DAILY MX report only all year
101Hydrocarbons, total petroleumANNL AVG report only all year
101Hydrocarbons, total petroleumANNL AVG report only all year
101Hydrocarbons, total petroleumANNL AVG report only all year
101Hydrocarbons, total petroleumANNL AVG report only all year
101Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
101Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
101Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
101Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
101Hydrocarbons, total petroleumANNL AVG report only all year
101Hydrocarbons, total petroleumANNL AVG report only all year
101Hydrocarbons, total petroleumANNL AVG report only all year
101Hydrocarbons, total petroleumANNL AVG report only all year
101Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
101Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
101Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
101Hydrocarbons, total petroleumDAILY MX <= 15 mg/L all year
101Flow, totalANNL AVG report only all year
101Flow, totalANNL AVG report only all year
101Flow, totalDAILY MX report only all year
101Flow, totalDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states