NPDES permit AR0036668 · Minor NON-POTW · effective, expires 2026-10-31 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31. Most often over: Whole Effluent Toxicity [WET] - C. dubia (2).
Reports are due about 25 days after each monitoring period ends (the most common figure among AR permits in EPA's filings — check your permit).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Streamflow | MO AVG | report only | Jul, Aug, Sep |
| 001 | Streamflow | DAILY MX | report only | Jul, Aug, Sep |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 31 mg/L | Jan, Feb, Mar, Apr, May, Jul, Aug, Sep, Dec |
| 001 | Solids, total suspended | MO AVG | <= 31 mg/L | Jun, Oct, Nov |
| 001 | Solids, total suspended | DAILY MX | <= 60 mg/L | Jan, Feb, Mar, Apr, May, Jul, Aug, Sep, Dec |
| 001 | Solids, total suspended | DAILY MX | <= 60 mg/L | Jun, Oct, Nov |
| 001 | Solids, total suspended | MO AVG | <= 46.5 lb/d | Jun, Oct, Nov |
| 001 | Solids, total suspended | DAILY MX | <= 69.8 lb/d | Jun, Oct, Nov |
| 001 | Chloride [as Cl] | MO AVG | report only | all year |
| 001 | Chloride [as Cl] | DAILY MX | report only | all year |
| 001 | Sulfate, total [as SO4] | MO AVG | report only | all year |
| 001 | Sulfate, total [as SO4] | DAILY MX | report only | all year |
| 001 | Cadmium, total [as Cd] | MO AVG | <= 4 ug/L | Jun, Oct, Nov |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= 8 ug/L | Jun, Oct, Nov |
| 001 | Cadmium, total [as Cd] | MO AVG | <= .006 lb/d | Jun, Oct, Nov |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= .009 lb/d | Jun, Oct, Nov |
| 001 | Copper, total [as Cu] | MO AVG | <= 29.5 ug/L | Jun, Oct, Nov |
| 001 | Copper, total [as Cu] | DAILY MX | <= 59.1 ug/L | Jun, Oct, Nov |
| 001 | Copper, total [as Cu] | MO AVG | <= .044 lb/d | Jun, Oct, Nov |
| 001 | Copper, total [as Cu] | DAILY MX | <= .066 lb/d | Jun, Oct, Nov |
| 001 | Zinc, total [as Zn] | MO AVG | <= 281.9 ug/L | Jun, Oct, Nov |
| 001 | Zinc, total [as Zn] | DAILY MX | <= 565.6 ug/L | Jun, Oct, Nov |
| 001 | Zinc, total [as Zn] | MO AVG | <= .423 lb/d | Jun, Oct, Nov |
| 001 | Zinc, total [as Zn] | DAILY MX | <= .635 lb/d | Jun, Oct, Nov |
| 001 | Discharge flow as % of stream flow | DAILY MX | <= 14.7 % | Jul, Aug, Sep |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | Jan, Feb, Mar, Apr, May, Dec |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | <= .06 MGD | Jan, Feb, Mar, Apr, May, Dec |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | Jun, Jul, Aug, Sep, Oct, Nov |
| TX1 | Whole effluent toxicity - retest #1 | 7 DA MIN | report only | all year |
| TX1 | Whole effluent toxicity - retest #2 | 7 DA MIN | report only | all year |
| TX1 | WET, sublethal retest #1 | 7 DA MIN | report only | all year |
| TX1 | WET, sublethal retest #2 | 7 DA MIN | report only | all year |
| TX1 | Whole Effluent Toxicity - Retest #3 | 7 DA MIN | report only | all year |
| TX1 | Whole Effluent Toxicity, Sub-Lethal Retest #3 | 7 DA MIN | report only | all year |
| TX1 | Whole Effluent Toxicity [WET] - C. dubia | 7 DA MIN | >= 100 % | Jun, Oct, Nov |
| TX1 | Whole Effluent Toxicity [WET] - C. dubia | 7 DA MIN | >= 80 % | Jun, Oct, Nov |
| TX1 | Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX1 | Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 7 DA MIN | 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