NPDES permit VA0063690 · Major POTW · effective, expires 2028-04-30 · 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 (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] | DAILY MN | >= 5.6 mg/L | all year |
| 001 | pH | DAILY MN | >= 6 SU | all year |
| 001 | pH | DAILY MX | <= 9 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 8 mg/L | all year |
| 001 | Solids, total suspended | WKLY AVG | <= 12 mg/L | all year |
| 001 | Solids, total suspended | MO AVG | <= 2300 kg/d | all year |
| 001 | Solids, total suspended | WKLY AVG | <= 3400 kg/d | all year |
| 001 | Solids, total suspended | WKLY AVG | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 5.6 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 3.84 mg/L | Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 8.4 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 5.76 mg/L | Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 1589 kg/d | Jan, Feb, Mar, Apr, May, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 1090 kg/d | Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 2385 kg/d | Jan, Feb, Mar, Apr, May, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 1635 kg/d | Jun, Jul, Aug, Sep, Oct |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= 75 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 | <= 24.8 ug/L | all year |
| 001 | Chlorine, total residual | WKLY AVG | <= 26.3 ug/L | all year |
| 001 | Chlorine, total residual | DAILY MN | >= .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 | <= .5 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 8 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 5 mg/L | Jun, Jul, Aug, Sep, Oct |
| 001 | BOD, carbonaceous [5 day, 20 C] | WKLY AVG | <= 11 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | WKLY AVG | <= 7 mg/L | Jun, Jul, Aug, Sep, Oct |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 2157 kg/d | Jan, Feb, Mar, Apr, May, Nov, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 1361 kg/d | Jun, Jul, Aug, Sep, Oct |
| 001 | BOD, carbonaceous [5 day, 20 C] | WKLY AVG | <= 3236 kg/d | Jan, Feb, Mar, Apr, May, Nov, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | WKLY AVG | <= 2044 kg/d | Jun, Jul, Aug, Sep, Oct |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | report only | all year |
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