NPDES permit AR0020010 · Major POTW · effective, expires 2029-04-30 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31.
Reports are due about 25 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] | MO AV MN | >= 7.7 mg/L | Apr, May |
| 001 | Oxygen, dissolved [DO] | MO AV MN | >= 11 mg/L | Jun, Jul, Aug, Sep |
| 001 | Oxygen, dissolved [DO] | MO AV MN | >= 7.5 mg/L | Oct, Nov |
| 001 | Oxygen, dissolved [DO] | MO AV MN | >= 8.7 mg/L | Jan, Feb, Mar, Dec |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 5 mg/L | Apr, May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Solids, total suspended | MO AVG | <= 15 mg/L | Jan, Feb, Mar, Dec |
| 001 | Solids, total suspended | 7 DA AVG | <= 7 mg/L | Apr, May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Solids, total suspended | 7 DA AVG | <= 22 mg/L | Jan, Feb, Mar, Dec |
| 001 | Solids, total suspended | MO AVG | <= 525.4 lb/d | Apr, May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Solids, total suspended | MO AVG | <= 1576.3 lb/d | Jan, Feb, Mar, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 2.1 mg/L | Apr, May |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= .5 mg/L | Jun, Jul, Aug, Sep |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 2.4 mg/L | Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 4 mg/L | Jan, Feb, Mar, Dec |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 3.2 mg/L | Apr, May |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= .8 mg/L | Jun, Jul, Aug, Sep |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 3.6 mg/L | Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 6 mg/L | Jan, Feb, Mar, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 220.7 lb/d | Apr, May |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 52.5 lb/d | Jun, Jul, Aug, Sep |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 252.2 lb/d | Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 420.3 lb/d | Jan, Feb, Mar, Dec |
| 001 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | 7 DA AVG | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 001 | Phosphorus, total [as P] | MO AVG | <= 1 mg/L | all year |
| 001 | Phosphorus, total [as P] | 7 DA AVG | <= 2 mg/L | all year |
| 001 | Phosphorus, total [as P] | MO AVG | <= 105.1 lb/d | all year |
| 001 | Chloride, dissolved in water | MO AVG | report only | all year |
| 001 | Chloride, dissolved in water | 7 DA AVG | report only | all year |
| 001 | Chloride, dissolved in water | MO AVG | report only | all year |
| 001 | Sulfate, total [as SO4] | MO AVG | <= 119 mg/L | all year |
| 001 | Sulfate, total [as SO4] | 7 DA AVG | <= 179 mg/L | all year |
| 001 | Sulfate, total [as SO4] | MO AVG | <= 12505 lb/d | 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 | Solids, total dissolved | MO AVG | <= 500 mg/L | all year |
| 001 | Solids, total dissolved | 7 DA AVG | <= 750 mg/L | all year |
| 001 | Solids, total dissolved | MO AVG | <= 52542 lb/d | all year |
| 001 | Coliform, fecal general | 30DA GEO | <= 200 #/100mL | Apr, May, Jun, Jul, Aug, Sep |
| 001 | Coliform, fecal general | 30DA GEO | <= 1000 #/100mL | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | Coliform, fecal general | 7 DA GEO | <= 400 #/100mL | Apr, May, Jun, Jul, Aug, Sep |
| 001 | Coliform, fecal general | 7 DA GEO | <= 2000 #/100mL | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | Overflows | MO TOTAL | report only | all year |
| 001 | Overflow volume [SS0 volume, CSO volume] | MO TOTAL | report only | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 7.5 mg/L | Apr, May |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 5.7 mg/L | Jun, Jul, Aug, Sep |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 5.5 mg/L | Oct, Nov |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 20 mg/L | Jan, Feb, Mar, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 11.3 mg/L | Apr, May |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 8.6 mg/L | Jun, Jul, Aug, Sep |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 8.3 mg/L | Oct, Nov |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 30 mg/L | Jan, Feb, Mar, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 788.1 lb/d | Apr, May |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 599 lb/d | Jun, Jul, Aug, Sep |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 578 lb/d | Oct, Nov |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 2101.7 lb/d | Jan, Feb, Mar, Dec |
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