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Industrial Inorganic Chemicals, Longview, Washington. NPDES permit WA0991024 expired Oct 31, 2024; its limits still apply. Last 12 months: no values over a limit, 2 required values missing, 3 of 36 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH, maximum | daily maximum | ≤ 9 SU | all year | 001A |
| pH, maximum | daily maximum | ≤ 9 SU | all year | 001A |
| pH, minimum | daily minimum | ≥ 6 SU | all year | 001A |
| pH, minimum | daily minimum | ≥ 6 SU | all year | 001A |
| Flow | daily maximum | ≤ 353190 gal/d | all year | 001A |
| Flow | daily maximum | ≤ 353190 gal/d | all year | 001A |
| pH, maximum | daily maximum | ≤ 12.2 SU | all year | 001B |
| pH, maximum | daily maximum | ≤ 12.2 SU | all year | 001B |
| pH, minimum | daily minimum | ≥ 4 SU | all year | 001B |
| pH, minimum | daily minimum | ≥ 4 SU | all year | 001B |
| Flow | daily maximum | report only (gal/d) (alert, not enforceable) | all year | 001B |
| Flow | daily maximum | report only (gal/d) (alert, not enforceable) | all year | 001B |
| Flow | monthly average | report only (gal/d) (alert, not enforceable) | all year | 001B |
| Flow | monthly average | report only (gal/d) (alert, not enforceable) | all year | 001B |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) (alert, not enforceable) | all year | 002 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) (alert, not enforceable) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) (alert, not enforceable) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) (alert, not enforceable) | all year | 002 |
| Turbidity | single reading | report only (NTU) (alert, not enforceable) | all year | 002 |
| Turbidity | single reading | report only (NTU) (alert, not enforceable) | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.3 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.3 mg/L | all year | 002 |
| Chloride [as Cl] | monthly average | ≤ 259 mg/L | all year | 002 |
| Chloride [as Cl] | monthly average | ≤ 259 mg/L | all year | 002 |
| Iron, total [as Fe] | single reading | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Iron, total [as Fe] | single reading | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ 12.4 ug/L | all year | 002 |
| Chlorine, total residual | monthly average | ≤ 12.4 ug/L | all year | 002 |
| pH, maximum | daily maximum | ≤ 9 SU | all year | 002 |
| pH, maximum | daily maximum | ≤ 9 SU | all year | 002 |
| pH, minimum | daily minimum | ≥ 6 SU | all year | 002 |
| pH, minimum | daily minimum | ≥ 6 SU | all year | 002 |
| Flow | daily maximum | report only (gal/d) (alert, not enforceable) | all year | 002 |
| Flow | daily maximum | report only (gal/d) (alert, not enforceable) | all year | 002 |
| Flow | monthly average | report only (gal/d) (alert, not enforceable) | all year | 002 |
| Flow | monthly average | report only (gal/d) (alert, not enforceable) | all year | 002 |
Cited limits by parameter: Washington's rules and the federal ones.
Same industry: the 7 Chemicals and Allied Products permits in Washington.
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