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TPC Group LLC

Industrial Organic Chemicals, Port Neches, Texas. NPDES permit TX0129887 expired Sep 15, 2026; its limits still apply. Last 12 months: no values over a limit, 3 of 36 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 005 form A monthly (6 values), outfall 011 form A monthly (6 values), outfall 201 form A monthly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 36 reports late

Limits in force (18)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year005
pHmaximum≤ 9 SUall year005
Oil & Greasedaily maximum≤ 15 mg/Lall year005
Carbon, tot organic [TOC]daily maximum≤ 55 mg/Lall year005
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
pHminimum≥ 6 SUall year011
pHmaximum≤ 9 SUall year011
Oil & Greasedaily maximum≤ 15 mg/Lall year011
Carbon, tot organic [TOC]daily maximum≤ 55 mg/Lall year011
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year011
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year011
pHminimum≥ 6 SUall year201
pHmaximum≤ 9 SUall year201
Oil & Greasedaily maximum≤ 15 mg/Lall year201
Carbon, tot organic [TOC]daily maximum≤ 55 mg/Lall year201
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year201
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year201

How strict are these limits?

Cited limits by parameter: Texas's rules and the federal ones.

Same industry: the 165 Chemicals and Allied Products permits in Texas.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0129887 · MCP: https://passage-data.com/mcp