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Natural Gas Liquids, Mont Belvieu, Texas. NPDES permit TX0140082, in force until Jun 19, 2028. Last 12 months: over a limit 4 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| January 2026 | 002 | Zinc, total [as Zn], daily average | .1525 mg/L | ≤ .124 mg/L | 23% |
| February 2026 | 002 | Zinc, total [as Zn], daily average | .1667 mg/L | ≤ .124 mg/L | 34% |
| July 2026 | 001 | Carbon, tot organic [TOC], daily maximum | 77.54 mg/L | ≤ 75 mg/L | 3% |
| July 2026 | 002 | Carbon, tot organic [TOC], daily maximum | 81.96 mg/L | ≤ 75 mg/L | 9% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | daily average | ≤ 20 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 159 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 238 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily average | report only (lb/d) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 75 mg/L | all year | 001 |
| Zinc, total [as Zn] | daily average | ≤ .124 mg/L | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ .264 mg/L | all year | 001 |
| Zinc, total [as Zn] | daily average | ≤ .983 lb/d | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 2.09 lb/d | all year | 001 |
| Zinc, total [as Zn] | daily average | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily average | report only (lb/d) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (lb/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | ≤ .95 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 1.6 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Mercury, total [as Hg] | daily average | report only (mg/L) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 001 |
| Mercury, total [as Hg] | daily average | report only (lb/d) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (lb/d) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 20 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 125 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 188 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | daily average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily average | report only (lb/d) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 75 mg/L | all year | 002 |
| Zinc, total [as Zn] | daily average | ≤ .124 mg/L | all year | 002 |
| Zinc, total [as Zn] | daily maximum | ≤ .264 mg/L | all year | 002 |
| Zinc, total [as Zn] | daily average | ≤ .776 lb/d | all year | 002 |
| Zinc, total [as Zn] | daily maximum | ≤ 1.65 lb/d | all year | 002 |
| Zinc, total [as Zn] | daily average | report only (mg/L) | all year | 002 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 002 |
| Zinc, total [as Zn] | daily average | report only (lb/d) | all year | 002 |
| Zinc, total [as Zn] | daily maximum | report only (lb/d) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily average | ≤ .75 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 1.4 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Mercury, total [as Hg] | daily average | report only (mg/L) | all year | 002 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 002 |
| Mercury, total [as Hg] | daily average | report only (lb/d) | all year | 002 |
| Mercury, total [as Hg] | daily maximum | report only (lb/d) | all year | 002 |
Cited limits by parameter: Texas's rules and the federal ones.
Same industry: the 30 Oil and Gas Extraction permits in Texas.
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Your permit document is the final word. As JSON: /api/v1/permits/TX0140082 · MCP: https://passage-data.com/mcp