NPDES permit VA0022390 · 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: Chlorine, total residual (2).
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] | INST MIN | >= 4 mg/L | all year |
| 001 | Oxygen, dissolved [DO] | DAILY MN | >= 5 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 7 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MX WK AV | <= 10.5 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 53 kg/d | all year |
| 001 | BOD, 5-day, 20 deg. C | MX WK AV | <= 79 kg/d | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | report only | all year |
| 001 | pH | DAILY MN | >= 6 SU | all year |
| 001 | pH | DAILY MX | <= 9 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 30 mg/L | all year |
| 001 | Solids, total suspended | MX WK AV | <= 45 mg/L | all year |
| 001 | Solids, total suspended | MO AVG | <= 230 kg/d | all year |
| 001 | Solids, total suspended | MX WK AV | <= 340 kg/d | all year |
| 001 | Solids, total suspended | MO AVG | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 3.3 mg/L | Jan, Feb, Mar, Apr, May |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 1.4 mg/L | Jun, Jul, Aug, Sep, Oct, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | MX WK AV | <= 4.4 mg/L | Jan, Feb, Mar, Apr, May |
| 001 | Nitrogen, ammonia total [as N] | MX WK AV | <= 1.9 mg/L | Jun, Jul, Aug, Sep, Oct, Nov, Dec |
| 001 | Phosphorus, total [as P] | MO AVG | report only | all year |
| 001 | Phosphorus, total [as P] | MO AVG | report only | all year |
| 001 | Phosphorus, total [as P] | MO TOTAL | report only | all year |
| 001 | Phosphorus, total [as P] | ANNL TOT | <= 2132 lb/yr | all year |
| 001 | Cyanide, free [amenable to chlorination] | MO AVG | <= 16.4 ug/L | all year |
| 001 | Cyanide, free [amenable to chlorination] | MX WK AV | <= 16.4 ug/L | all year |
| 001 | Hardness, total [as CaCO3] | MO AVG | report only | all year |
| 001 | Zinc, total recoverable | MO AVG | <= 59 ug/L | all year |
| 001 | Zinc, total recoverable | MX WK AV | <= 59 ug/L | all year |
| 001 | Lead, total recoverable | MO AVG | <= 6.8 ug/L | all year |
| 001 | Lead, total recoverable | MX WK AV | <= 6.8 ug/L | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= 2 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 | <= .0043 mg/L | all year |
| 001 | Chlorine, total residual | MX WK AV | <= .0051 mg/L | all year |
| 001 | Chlorine, total residual | INST MIN | >= .6 mg/L | all year |
| 001 | BOD, percent removal [total] | MO AV MN | >= 85 % | all year |
| 001 | E. coli | GEO MEAN | <= 126 #/100mL | all year |
| 001 | Phosphorus, Total As P | ANNL TOT | <= 2132.2 lb/yr | all year |
| 001 | Solids, suspended percent removal | MO AV MN | >= 85 % | all year |
| 001 | TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | MAXIMUM | <= 3.03 tox chronic | all year |
| 001 | TU Static Renewal 7-Day Chronic Pimphales promelas | MAXIMUM | <= 3.03 tox chronic | all year |
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