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Pi Dock Facilities LLC

Marine Cargo Handling, Port Arthur, Texas. NPDES permit TX0133833, in force until Dec 21, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 20 days after each period: form A monthly (8 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (8)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Benzene, ethylbenzene, toluene, xylene combination	daily average	≤ .5 mg/L	all year
Benzene, ethylbenzene, toluene, xylene combination	daily maximum	≤ .5 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	report only (MGD)	all year
Chlorine, total residual	daily maximum	≤ 4 mg/L	all year
Hydrocarbons, petroleum	daily maximum	≤ 15 mg/L	all year

How strict are these limits?

Benzene, ethylbenzene, toluene, xylene combination, daily maximum .5 mg/L — stricter than 38% of 52 other minor industrial and other permits nationwide; 17% have the same limit

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

Same industry: the 19 Water Transportation 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/TX0133833 · MCP: https://passage-data.com/mcp