NPDES permit VA0083135 · Major POTW · effective, expires 2030-05-31 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31. Most often over: Copper, total recoverable (2), Nitrogen, ammonia total [as N] (1).
Reports are due about 10 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Oxygen, dissolved [DO] | MINIMUM | >= 6.5 mg/L | Jan, Feb, Mar, Apr, Dec |
| 001 | Oxygen, dissolved [DO] | MINIMUM | >= 5 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 11 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 25 mg/L | Jan, Feb, Mar, Apr, Dec |
| 001 | BOD, 5-day, 20 deg. C | WKLY AVG | <= 16 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | BOD, 5-day, 20 deg. C | WKLY AVG | <= 38 mg/L | Jan, Feb, Mar, Apr, Dec |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 100 kg/d | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 100 kg/d | Jan, Feb, Mar, Apr, Dec |
| 001 | BOD, 5-day, 20 deg. C | WKLY AVG | <= 150 kg/d | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | BOD, 5-day, 20 deg. C | WKLY AVG | <= 150 kg/d | Jan, Feb, Mar, Apr, Dec |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | report only | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 11 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Solids, total suspended | MO AVG | <= 25 mg/L | Jan, Feb, Mar, Apr, Dec |
| 001 | Solids, total suspended | WKLY AVG | <= 16 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Solids, total suspended | WKLY AVG | <= 38 mg/L | Jan, Feb, Mar, Apr, Dec |
| 001 | Solids, total suspended | MO AVG | <= 100 kg/d | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Solids, total suspended | MO AVG | <= 230 kg/d | Jan, Feb, Mar, Apr, Dec |
| 001 | Solids, total suspended | WKLY AVG | <= 150 kg/d | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Solids, total suspended | WKLY AVG | <= 340 kg/d | Jan, Feb, Mar, Apr, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 16 mg/L | Jan, Feb, Mar, Apr, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 5.9 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 24 mg/L | Jan, Feb, Mar, Apr, Dec |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 8.9 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Hardness, total [as CaCO3] | MO AVG | report only | all year |
| 001 | Copper, total recoverable | MO AVG | <= 23 ug/L | all year |
| 001 | Copper, total recoverable | WKLY AVG | <= 23 ug/L | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= 2.4 MGD (alert) | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only (alert) | all year |
| 001 | Chlorine, total residual | MO AVG | <= 31 ug/L | all year |
| 001 | Chlorine, total residual | WKLY AVG | <= 33 ug/L | all year |
| 001 | Chlorine, total residual | INST MIN | >= .6 mg/L | all year |
| 001 | E. coli | GEO MEAN | <= 126 #/100mL | all year |
| 001 | Nitrogen, Total As N | ANNL AVG | <= 5 mg/L | all year |
| 001 | Phosphorus, Total As P | ANNL AVG | <= .3 mg/L | all year |
| 001 | TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | MAXIMUM | <= 7.14 tox chronic | all year |
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