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Brick And Structural Clay Tile, Oklahoma City, Oklahoma. NPDES permit OK0038253, in force until Feb 28, 2027. Last 12 months: over a limit once (last January 2026), 4 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| January 2026 | pH, minimum | 6.2 SU | ≥ 6.5 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 90 mg/L | 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 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 90 mg/L | 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 |
Cited limits by parameter: Oklahoma's rules and the federal ones.
Same industry: the 7 Stone, Clay, Glass and Concrete Products permits in Oklahoma.
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