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Subdividers And Developers, Benton, Arkansas. NPDES permit AR0050563, in force until Oct 31, 2028. Last 12 months: over a limit 31 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Coliform, fecal general, 30-day geometric mean | 3046 #/100mL | ≤ 1000 #/100mL | 205% |
| October 2025 | Coliform, fecal general, 7-day geometric mean | 3046 #/100mL | ≤ 2000 #/100mL | 52% |
| November 2025 | Nitrogen, ammonia total [as N], daily maximum | 8.07 lb/d | ≤ 6.1 lb/d | 32% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 14.6 mg/L | ≤ 10 mg/L | 46% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 4.77 lb/d | ≤ 4.2 lb/d | 14% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 9.8 lb/d | ≤ 6.1 lb/d | 61% |
| February 2026 | Solids, total suspended, daily maximum | 17.5 lb/d | ≤ 12.5 lb/d | 40% |
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 19 mg/L | ≤ 14.7 mg/L | 29% |
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 9.7 lb/d | ≤ 6.1 lb/d | 59% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 11.75 mg/L | ≤ 10 mg/L | 18% |
| April 2026 | Nitrogen, ammonia total [as N], daily maximum | 3.5 lb/d | ≤ 2.5 lb/d | 40% |
| April 2026 | Nitrogen, ammonia total [as N], daily maximum | 7.8 mg/L | ≤ 6.1 mg/L | 28% |
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 6.15 mg/L | ≤ 6.1 mg/L | 1% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 4.8 lb/d | ≤ 3.1 lb/d | 55% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 9 mg/L | ≤ 7.5 mg/L | 20% |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | 3.2 lb/d | ≤ 2.1 lb/d | 52% |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | 8.4 mg/L | ≤ 5 mg/L | 68% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 4.4 lb/d | ≤ 3.1 lb/d | 42% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 9 mg/L | ≤ 7.5 mg/L | 20% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 2.8 lb/d | ≤ 2.1 lb/d | 33% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 7.9 mg/L | ≤ 5 mg/L | 58% |
| July 2026 | Coliform, fecal general, 30-day geometric mean | 1201 #/100mL | ≤ 1000 #/100mL | 20% |
| July 2026 | Coliform, fecal general, 7-day geometric mean | > 2400 #/100mL | ≤ 2000 #/100mL | — |
| July 2026 | Nitrogen, ammonia total [as N], daily maximum | 13 mg/L | ≤ 7.5 mg/L | 73% |
| July 2026 | Nitrogen, ammonia total [as N], daily maximum | 6.2 lb/d | ≤ 3.1 lb/d | 100% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 10.9 mg/L | ≤ 5 mg/L | 118% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 3.7 lb/d | ≤ 2.1 lb/d | 76% |
| August 2026 | Nitrogen, ammonia total [as N], daily maximum | 10.3 lb/d | ≤ 3.1 lb/d | 232% |
| August 2026 | Nitrogen, ammonia total [as N], daily maximum | 22 mg/L | ≤ 7.5 mg/L | 193% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | 22 mg/L | ≤ 5 mg/L | 340% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | 6.2 lb/d | ≤ 2.1 lb/d | 195% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Flow rate | monthly average | report only (%) | all year |
| Flow rate | daily maximum | report only (%) | all year |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 4 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 3 mg/L | May–Oct |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 8.3 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 12.5 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.1 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.2 lb/d | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.5 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.1 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 lb/d | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.5 lb/d | Apr |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Chlorine, total residual | instantaneous maximum | report only (mg/L) | all year |
| Coliform, fecal general | 30-day geometric mean | ≤ 1000 #/100mL | all year |
| Coliform, fecal general | 7-day geometric mean | ≤ 2000 #/100mL | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 15 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 23 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6.3 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 9.4 lb/d | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Chlorine, total residual, instantaneous maximum | 0.011 mg/L | new | 1 mg/L (11 values) | 90.9× |
Cited limits by parameter: Arkansas's rules and the federal ones.
Same industry: the 50 Real Estate permits in Arkansas.
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