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Aluminum Sheet, Plate, And Foil, Malvern, Arkansas. NPDES permit AR0050512, in force until Mar 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 86 deg F | all year |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 3.5 mg/L | May–Oct |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 40 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 60 mg/L | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 52.5 mg/L | all year |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year |
| Zinc, total recoverable | monthly average | report only (ug/L) | Jan, Feb, Mar, Apr, May, Dec |
| Zinc, total recoverable | monthly average | ≤ 95.2 ug/L | Jun–Nov |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Jan, Feb, Mar, Apr, May, Dec |
| Zinc, total recoverable | daily maximum | ≤ 191 ug/L | Jun–Nov |
| 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 |
Cited limits by parameter: Arkansas's rules and the federal ones.
Same industry: the 10 Primary Metal Industries permits in Arkansas.
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