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Custom Compound Purchased Resins, La Porte, Texas. NPDES permit TX0111350 expired May 14, 2025; its limits still apply. Last 12 months: over a limit 6 times (last February 2026), 4 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Zinc, total [as Zn], daily average | .0738 mg/L | ≤ .073 mg/L | 1% |
| December 2025 | Zinc, total [as Zn], daily maximum | .2975 lb/d | ≤ .218 lb/d | 36% |
| January 2026 | Zinc, total [as Zn], daily average | .1099 mg/L | ≤ .073 mg/L | 51% |
| January 2026 | Zinc, total [as Zn], daily maximum | .197 mg/L | ≤ .156 mg/L | 26% |
| February 2026 | Zinc, total [as Zn], daily average | .1078 mg/L | ≤ .073 mg/L | 48% |
| February 2026 | Zinc, total [as Zn], daily maximum | .217 mg/L | ≤ .156 mg/L | 39% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | daily average | ≤ 7.13 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 17.1 lb/d | all year |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 200 mg/L | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | daily average | ≤ 12 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 19 mg/L | all year |
| Solids, total suspended | daily average | ≤ 17.1 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 27.1 lb/d | all year |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year |
| Oil & Grease | daily average | ≤ 14.2 lb/d | all year |
| Oil & Grease | daily maximum | ≤ 21.4 lb/d | all year |
| Zinc, total [as Zn] | daily average | ≤ .073 mg/L | all year |
| Zinc, total [as Zn] | daily maximum | ≤ .156 mg/L | all year |
| Zinc, total [as Zn] | daily average | ≤ .104 lb/d | all year |
| Zinc, total [as Zn] | daily maximum | ≤ .218 lb/d | all year |
| Flow, in conduit or thru treatment plant | daily average | ≤ .171 MGD | all year |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 2.46 MGD | all year |
Cited limits by parameter: Texas's rules and the federal ones.
Same industry: the 10 Rubber and Miscellaneous Plastics Products permits in Texas.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/TX0111350 · MCP: https://passage-data.com/mcp