NPDES permit MD0000060 · Major NON-POTW · administratively continued, expires 2022-02-28 · EPA's file as of 2026-09-19
Check this month's numbers before you fileThis permit expired on 2022-02-28 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.
Last period with anything received: 2026-07-31.
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).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Oxygen, dissolved [DO] | INST MIN | >= 5 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MX MO AV | <= 10 mg/L | Apr, May, Jun, Jul, Aug, Sep |
| 001 | BOD, 5-day, 20 deg. C | MX MO AV | <= 30 mg/L | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | MX DA AV | <= 20 mg/L | Apr, May, Jun, Jul, Aug, Sep |
| 001 | BOD, 5-day, 20 deg. C | MX DA AV | <= 60 mg/L | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | MX MO AV | <= 14.2 lb/d | Apr, May, Jun, Jul, Aug, Sep |
| 001 | BOD, 5-day, 20 deg. C | MX MO AV | <= 42.5 lb/d | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | MX DA AV | <= 28.4 lb/d | Apr, May, Jun, Jul, Aug, Sep |
| 001 | BOD, 5-day, 20 deg. C | MX DA AV | <= 85 lb/d | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | pH | MINIMUM | >= 6.5 SU | all year |
| 001 | pH | MAXIMUM | <= 8.5 SU | all year |
| 001 | Solids, total suspended | MX MO AV | <= 10 mg/L | all year |
| 001 | Solids, total suspended | MX DA AV | <= 20 mg/L | all year |
| 001 | Oil & Grease | MX MO AV | <= 10 mg/L | all year |
| 001 | Oil & Grease | MX DA AV | <= 15 mg/L | all year |
| 001 | Nitrogen, total [as N] | MO AVG | report only | all year |
| 001 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, total [as N] | MO TOTAL | report only | all year |
| 001 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, total [as N] | CUM TOTL | <= 3570 lb/yr | all year |
| 001 | Nitrogen, Kjeldahl, total [as N] | MX MO AV | <= 11 mg/L | Apr, May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, Kjeldahl, total [as N] | MX MO AV | <= 33 mg/L | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | Nitrogen, Kjeldahl, total [as N] | MX DA AV | <= 22 mg/L | Apr, May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, Kjeldahl, total [as N] | MX DA AV | <= 66 mg/L | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | Nitrogen, Kjeldahl, total [as N] | MX MO AV | <= 15.6 lb/d | Apr, May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, Kjeldahl, total [as N] | MX MO AV | <= 46.8 lb/d | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | Nitrogen, Kjeldahl, total [as N] | MX DA AV | <= 31.2 lb/d | Apr, May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, Kjeldahl, total [as N] | MX DA AV | <= 93.6 lb/d | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| 001 | Phosphorus, total [as P] | MO AVG | <= .28 mg/L | all year |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 001 | Phosphorus, total [as P] | CUM TOTL | <= 146 lb/yr | all year |
| 001 | Phosphorus, total [as P] | MO TOTAL | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | ANNL TOT | report only | Dec |
| 001 | Chlorine, total residual | MO AVG | <= 11 ug/L | all year |
| 001 | Chlorine, total residual | DAILY MX | <= 19 ug/L | all year |
| 001 | E. coli | GEO MEAN | <= 126 MPN/100mL | all year |
| 002 | pH | MINIMUM | >= 6.5 SU | all year |
| 002 | pH | MAXIMUM | <= 8.5 SU | all year |
| 002 | Temp. diff. between up/down stream deg. F | DAILY MX | <= 0 deg F | all year |
| 002 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 005 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 005 | Nitrogen, total [as N] | MO AVG | report only | all year |
| 005 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| 005 | Nitrogen, total [as N] | MO TOTAL | report only | all year |
| 005 | Nitrogen, Kjeldahl, total [as N] | MO AVG | report only | all year |
| 005 | Nitrogen, Kjeldahl, total [as N] | DAILY MX | report only | all year |
| 005 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 005 | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| 005 | Coliform, fecal general | GEO MEAN | <= 200 MPN/100mL | all year |
| 006 | Oil & Grease | MO AVG | report only | all year |
| 006 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 006 | Nitrogen, total [as N] | MO AVG | report only | all year |
| 006 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| 006 | Nitrogen, total [as N] | MO TOTAL | report only | all year |
| 006 | Nitrogen, Kjeldahl, total [as N] | MO AVG | report only | all year |
| 006 | Nitrogen, Kjeldahl, total [as N] | DAILY MX | report only | all year |
| 006 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 006 | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| 006 | Coliform, fecal general | GEO MEAN | <= 200 MPN/100mL | all year |
| MW1 | pH | MINIMUM | report only | all year |
| MW1 | pH | MINIMUM | report only | all year |
| MW1 | pH | MAXIMUM | report only | all year |
| MW1 | pH | MAXIMUM | report only | all year |
| MW1 | Nitrogen, nitrate total [as N] | MAXIMUM | report only | all year |
| MW1 | Nitrogen, nitrate total [as N] | MAXIMUM | report only | all year |
| MW1 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW1 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW1 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW1 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW1 | Solids, total dissolved | MAXIMUM | report only | all year |
| MW1 | Solids, total dissolved | MAXIMUM | report only | all year |
| MW1 | Coliform, fecal general | MAXIMUM | report only | all year |
| MW1 | Coliform, fecal general | MAXIMUM | report only | all year |
| MW2 | pH | MINIMUM | report only | all year |
| MW2 | pH | MINIMUM | report only | all year |
| MW2 | pH | MAXIMUM | report only | all year |
| MW2 | pH | MAXIMUM | report only | all year |
| MW2 | Nitrogen, nitrate total [as N] | MAXIMUM | report only | all year |
| MW2 | Nitrogen, nitrate total [as N] | MAXIMUM | report only | all year |
| MW2 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW2 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW2 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW2 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW2 | Solids, total dissolved | MAXIMUM | report only | all year |
| MW2 | Solids, total dissolved | MAXIMUM | report only | all year |
| MW2 | Coliform, fecal general | MAXIMUM | report only | all year |
| MW2 | Coliform, fecal general | MAXIMUM | report only | all year |
| MW3 | pH | MINIMUM | report only | all year |
| MW3 | pH | MINIMUM | report only | all year |
| MW3 | pH | MAXIMUM | report only | all year |
| MW3 | pH | MAXIMUM | report only | all year |
| MW3 | Nitrogen, nitrate total [as N] | MAXIMUM | <= 10 mg/L | all year |
| MW3 | Nitrogen, nitrate total [as N] | MAXIMUM | <= 10 mg/L | all year |
| MW3 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW3 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW3 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW3 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW3 | Solids, total dissolved | MAXIMUM | <= 500 mg/L | all year |
| MW3 | Solids, total dissolved | MAXIMUM | <= 500 mg/L | all year |
| MW3 | Coliform, fecal general | MAXIMUM | <= 2 MPN/100mL | all year |
| MW3 | Coliform, fecal general | MAXIMUM | <= 2 MPN/100mL | all year |
| MW4 | pH | MINIMUM | report only | all year |
| MW4 | pH | MINIMUM | report only | all year |
| MW4 | pH | MAXIMUM | report only | all year |
| MW4 | pH | MAXIMUM | report only | all year |
| MW4 | Nitrogen, nitrate total [as N] | MAXIMUM | <= 10 mg/L | all year |
| MW4 | Nitrogen, nitrate total [as N] | MAXIMUM | <= 10 mg/L | all year |
| MW4 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW4 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW4 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW4 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW4 | Solids, total dissolved | MAXIMUM | <= 500 mg/L | all year |
| MW4 | Solids, total dissolved | MAXIMUM | <= 500 mg/L | all year |
| MW4 | Coliform, fecal general | MAXIMUM | <= 2 MPN/100mL | all year |
| MW4 | Coliform, fecal general | MAXIMUM | <= 2 MPN/100mL | all year |
| MW5 | pH | MINIMUM | report only | all year |
| MW5 | pH | MINIMUM | report only | all year |
| MW5 | pH | MAXIMUM | report only | all year |
| MW5 | pH | MAXIMUM | report only | all year |
| MW5 | Nitrogen, nitrate total [as N] | MAXIMUM | <= 10 mg/L | all year |
| MW5 | Nitrogen, nitrate total [as N] | MAXIMUM | <= 10 mg/L | all year |
| MW5 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW5 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW5 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW5 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW5 | Solids, total dissolved | MAXIMUM | <= 500 mg/L | all year |
| MW5 | Solids, total dissolved | MAXIMUM | <= 500 mg/L | all year |
| MW5 | Coliform, fecal general | MAXIMUM | <= 2 MPN/100mL | all year |
| MW5 | Coliform, fecal general | MAXIMUM | <= 2 MPN/100mL | all year |
| MW6 | pH | MINIMUM | report only | all year |
| MW6 | pH | MINIMUM | report only | all year |
| MW6 | pH | MAXIMUM | report only | all year |
| MW6 | pH | MAXIMUM | report only | all year |
| MW6 | Nitrogen, nitrate total [as N] | MAXIMUM | report only | all year |
| MW6 | Nitrogen, nitrate total [as N] | MAXIMUM | report only | all year |
| MW6 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW6 | Nitrogen, Kjeldahl, total [as N] | MAXIMUM | report only | all year |
| MW6 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW6 | Phosphate, total [as PO4] | MAXIMUM | report only | all year |
| MW6 | Solids, total dissolved | MAXIMUM | report only | all year |
| MW6 | Solids, total dissolved | MAXIMUM | report only | all year |
| MW6 | Coliform, fecal general | MAXIMUM | report only | all year |
| MW6 | Coliform, fecal general | MAXIMUM | 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