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Industrial Organic Chemicals, Mont Belvieu, Texas. NPDES permit TX0118427, in force until Jun 12, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 250 mg/L | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily average | ≤ 22 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year |
| Chromium, hexavalent [as Cr] | daily average | ≤ .013 mg/L | all year |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .028 mg/L | all year |
| Copper, total [as Cu] | daily average | ≤ .0121 mg/L | all year |
| Copper, total [as Cu] | daily maximum | ≤ .0255 mg/L | all year |
| Silver, total [as Ag] | daily average | ≤ .0156 mg/L | all year |
| Silver, total [as Ag] | daily maximum | ≤ .033 mg/L | all year |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year |
| Selenium, total [as Se] | daily average | ≤ .016 mg/L | all year |
| Selenium, total [as Se] | daily maximum | ≤ .035 mg/L | all year |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .39 MGD | all year |
| E. coli | daily average | report only (CFU/100mL) | all year |
| E. coli | daily maximum | report only (CFU/100mL) | all year |
| Mercury, total [as Hg] | daily average | ≤ .000138 mg/L | all year |
| Mercury, total [as Hg] | daily maximum | ≤ .000293 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | daily average | ≤ 18 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Nitrogen, ammonia total [as N], daily average | 11.5 mg/L | tighter | 18.5 mg/L (9 values) | 1.61× |
| BOD, carbonaceous [5 day, 20 C], daily average | 9 mg/L | tighter | 2.7 mg/L (9 values, 2 below detection) | 0.3× |
Cited limits by parameter: Texas's rules and the federal ones.
Same industry: the 165 Chemicals and Allied 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/TX0118427 · MCP: https://passage-data.com/mcp