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Fish Hatcheries And Preserves, Mammoth Spring, Arkansas. NPDES permit AR0002879, in force until Dec 31, 2027. Last 12 months: over a limit 2 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Solids, total suspended, monthly average | 13 mg/L | ≤ 10 mg/L | 30% |
| August 2026 | Solids, total suspended, monthly average | 13 mg/L | ≤ 10 mg/L | 30% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 15 mg/L | all year | 001 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 001 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ .012 mg/L | all year | 001 |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | 7-day geometric mean | ≤ 200 #/100mL | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6.6 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 9.9 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (lb/d) | all year | 001 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 15 mg/L | all year | 002 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 002 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | all year | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (lb/d) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | instantaneous maximum | ≤ .012 mg/L | all year | 002 |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | all year | 002 |
| Coliform, fecal general | 7-day geometric mean | ≤ 200 #/100mL | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6.6 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 9.9 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (lb/d) | all year | 002 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 15 mg/L | all year | 003 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 003 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (lb/d) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Chlorine, total residual | instantaneous maximum | ≤ .012 mg/L | all year | 003 |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | all year | 003 |
| Coliform, fecal general | 7-day geometric mean | ≤ 200 #/100mL | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6.6 mg/L | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 9.9 mg/L | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (lb/d) | all year | 003 |
| Solids, total suspended | monthly average | ≤ 9007.2 lb/d | all year | SUM |
| Solids, total suspended | daily maximum | ≤ 13510.8 lb/d | all year | SUM |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1170.9 lb/d | all year | SUM |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1801.4 lb/d | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | all year | SUM |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | all year | SUM |
| Nitrite + Nitrate total [as N] | daily maximum | report only (lb/d) | all year | SUM |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | SUM |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | SUM |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 5944.7 lb/d | all year | SUM |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 8917.1 lb/d | all year | SUM |
| Whole effluent toxicity - retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| Whole effluent toxicity - retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| WET, sublethal retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| WET, sublethal retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| Whole Effluent Toxicity - Retest #3 | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| Whole Effluent Toxicity, Sub-Lethal Retest #3 | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TXSM |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TXSM |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TXSM |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TXSM |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TXSM |
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TXSM |
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TXSM |
Cited limits by parameter: Arkansas's rules and the federal ones.
Same industry: the 3 Fishing, Hunting and Trapping permits in Arkansas.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/AR0002879 · MCP: https://passage-data.com/mcp