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Sawmills And Planing Mills, General, El Dorado, Arkansas. NPDES permit AR0052507 expired Oct 31, 2026. Last 12 months: over a limit 15 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Solids, total suspended, monthly average | 45 mg/L | ≤ 35 mg/L | 29% |
| January 2026 | Solids, total suspended, daily maximum | 98 mg/L | ≤ 52.5 mg/L | 87% |
| January 2026 | Solids, total suspended, monthly average | 98 mg/L | ≤ 35 mg/L | 180% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 15 mg/L | ≤ 7.5 mg/L | 100% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 15 mg/L | ≤ 5 mg/L | 200% |
| February 2026 | Solids, total suspended, daily maximum | 98 mg/L | ≤ 52.5 mg/L | 87% |
| February 2026 | Solids, total suspended, monthly average | 98 mg/L | ≤ 35 mg/L | 180% |
| March 2026 | Oxygen, dissolved [DO], instantaneous minimum | 2.8 mg/L | ≥ 5 mg/L | 44% |
| March 2026 | pH, minimum | 5.02 SU | ≥ 6 SU | — |
| April 2026 | Oxygen, dissolved [DO], instantaneous minimum | 3.4 mg/L | ≥ 5 mg/L | 32% |
| April 2026 | Solids, total suspended, daily maximum | 110 mg/L | ≤ 52.5 mg/L | 110% |
| April 2026 | Solids, total suspended, monthly average | 110 mg/L | ≤ 35 mg/L | 214% |
| June 2026 | BOD, carbonaceous [5 day, 20 C], daily maximum | 98 mg/L | ≤ 30 mg/L | 227% |
| June 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 98 mg/L | ≤ 20 mg/L | 390% |
| June 2026 | Solids, total suspended, monthly average | 49 mg/L | ≤ 35 mg/L | 40% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 3 mg/L | May–Oct | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 52.5 mg/L | all year | 001 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.5 mg/L | Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 mg/L | Apr | 001 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | monthly average | report only (lb/d) | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (lb/d) | all year | 001 |
| Debris, floating [severity] | daily maximum | ≤ 0 N=0;Y=1 | 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 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved | monthly average | report only (lb/d) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (lb/d) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, Nov | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 20 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 38 mg/L | Jan, Feb, Mar, Apr, Nov | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 30 mg/L | May–Oct | 001 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 3 mg/L | May–Oct | 002 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 52.5 mg/L | all year | 002 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | Apr | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.5 mg/L | Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 mg/L | Apr | 002 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 002 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 002 |
| Chloride [as Cl] | monthly average | report only (lb/d) | all year | 002 |
| Chloride [as Cl] | daily maximum | report only (lb/d) | all year | 002 |
| Debris, floating [severity] | daily maximum | ≤ 0 N=0;Y=1 | 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 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total dissolved | monthly average | report only (lb/d) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (lb/d) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 20 mg/L | May–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, Nov | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 30 mg/L | May–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 38 mg/L | Jan, Feb, Mar, Apr, Nov | 002 |
Cited limits by parameter: Arkansas's rules and the federal ones.
Same industry: the 44 Lumber and Wood Products permits in Arkansas.
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