NPDES permit MD0020851 · Minor NON-POTW · expired, expires 2023-10-31 · EPA's file as of 2026-09-19
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This permit expired on 2023-10-31 and is expired: 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. Most often over: Phosphorus, total [as P] (1), Copper, total recoverable (1).
Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 002 | Oxygen, dissolved [DO] | MINIMUM | >= 5 mg/L | all year |
| 002 | BOD, 5-day, 20 deg. C | MX MO AV | <= 20 mg/L | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 002 | BOD, 5-day, 20 deg. C | MX MO AV | <= 30 mg/L | Jan, Feb, Mar, Nov, Dec |
| 002 | BOD, 5-day, 20 deg. C | MX WK AV | <= 30 mg/L | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 002 | BOD, 5-day, 20 deg. C | MX WK AV | <= 45 mg/L | Jan, Feb, Mar, Nov, Dec |
| 002 | BOD, 5-day, 20 deg. C | MX MO AV | <= 33 lb/d | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 002 | BOD, 5-day, 20 deg. C | MX MO AV | <= 50 lb/d | Jan, Feb, Mar, Nov, Dec |
| 002 | BOD, 5-day, 20 deg. C | MX WK AV | <= 50 lb/d | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 002 | BOD, 5-day, 20 deg. C | MX WK AV | <= 75 lb/d | Jan, Feb, Mar, Nov, Dec |
| 002 | BOD, 5-day, 20 deg. C | CUM TOTL | <= 14705 lb/yr | all year |
| 002 | BOD, 5-day, 20 deg. C | MO TOTAL | report only | all year |
| 002 | pH | MINIMUM | >= 6.5 SU | all year |
| 002 | pH | MAXIMUM | <= 8.5 SU | all year |
| 002 | Solids, total suspended | MX MO AV | <= 30 mg/L | Jan, Feb, Mar, Oct, Nov, Dec |
| 002 | Solids, total suspended | MX MO AV | <= 20 mg/L | Apr, May, Jun, Jul, Aug, Sep |
| 002 | Solids, total suspended | MX WK AV | <= 45 mg/L | Jan, Feb, Mar, Oct, Nov, Dec |
| 002 | Solids, total suspended | MX WK AV | <= 30 mg/L | Apr, May, Jun, Jul, Aug, Sep |
| 002 | Solids, total suspended | MX MO AV | <= 50 lb/d | Jan, Feb, Mar, Oct, Nov, Dec |
| 002 | Solids, total suspended | MX MO AV | <= 33 lb/d | Apr, May, Jun, Jul, Aug, Sep |
| 002 | Solids, total suspended | MX WK AV | <= 75 lb/d | Jan, Feb, Mar, Oct, Nov, Dec |
| 002 | Solids, total suspended | TC | <= 7120 lb/yr | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 002 | Solids, total suspended | MX WK AV | <= 50 lb/d | Apr, May, Jun, Jul, Aug, Sep |
| 002 | Solids, total suspended | CUM TOTL | <= 14680 lb/yr | all year |
| 002 | Solids, total suspended | MO TOTAL | report only | all year |
| 002 | Nitrogen, total [as N] | MX MO AV | <= 6.7 lb/d | all year |
| 002 | Nitrogen, total [as N] | MO TOTAL | report only | all year |
| 002 | Nitrogen, total [as N] | CUM TOTL | <= 2437 lb/yr | all year |
| 002 | Nitrogen, total [as N] | ANNL AVG | < 4 mg/L | Dec |
| 002 | Nitrogen, organic total [as N] | MO AVG | report only | all year |
| 002 | Nitrogen, ammonia total [as N] | MO AVG | report only | Jan, Feb, Mar, Nov, Dec |
| 002 | Nitrogen, ammonia total [as N] | MX MO AV | <= 3.6 mg/L | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 002 | Nitrogen, ammonia total [as N] | MO AVG | report only | Jan, Feb, Mar, Nov, Dec |
| 002 | Nitrogen, ammonia total [as N] | MX MO AV | <= 6 lb/d | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 002 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 002 | Phosphorus, total [as P] | ANNL AVG | < .3 mg/L | Dec |
| 002 | Phosphorus, total [as P] | MX MO AV | <= .5 lb/d | all year |
| 002 | Phosphorus, total [as P] | MO TOTAL | report only | all year |
| 002 | Phosphorus, total [as P] | CUM TOTL | <= 183 lb/yr | all year |
| 002 | Cyanide, total [as CN] | MO AVG | report only | all year |
| 002 | Hardness, total [as CaCO3] | MO AVG | report only | all year |
| 002 | Arsenic, total [as As] | MO AVG | report only | all year |
| 002 | Cadmium, total [as Cd] | MO AVG | report only | all year |
| 002 | Lead, total [as Pb] | MO AVG | report only | all year |
| 002 | Nickel, total [as Ni] | MO AVG | report only | all year |
| 002 | Silver, total [as Ag] | MO AVG | report only | all year |
| 002 | Zinc, total [as Zn] | MO AVG | report only | all year |
| 002 | Copper, total recoverable | MX MO AV | <= 19 ug/L | all year |
| 002 | Copper, total recoverable | MX MO AV | <= .03 lb/d | all year |
| 002 | Phosphate, ortho [as P] | MO AVG | report only | all year |
| 002 | Heptachlor epoxide | MO AVG | report only | 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 |
| 002 | Chlorine, total residual | MAXIMUM | < .1 mg/L | all year |
| 002 | E. coli | GX | <= 126 MPN/100mL | all year |
| 002 | Mercury, total [as Hg] | MO AVG | report only | all year |
| 002 | Organics, total toxic [TTO] | MO AVG | report only | all year |
| 002 | Polychlorinated biphenyls [PCB] pg/L | CUM TOTL | report only | Mar, Jun, Sep, Dec |
| 002 | Polychlorinated biphenyls [PCB] pg/L | QRTR AVG | report only | Mar, Jun, Sep, Dec |
| 002 | Polychlorinated biphenyls [PCB] pg/L | QT | report only | Mar, Jun, Sep, Dec |
| 002 | Flow, total | MO TOTAL | 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