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American River Transportation Co., LLC

Marine Cargo Handling, St. Louis, Missouri. NPDES permit MO0138975, in force until Jun 30, 2027. Last 12 months: over a limit 2 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form M monthly (8 values)
Renewal application due: Jan 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file: August 2026
Oct 2024 – Sep 2025: 1 value over a limit, 0 required values missing, 0 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit
December 2025	pH, maximum	9.56	≤ 9 SU
August 2026	pH, minimum	6.41	≥ 6.5 SU

Limits in force (8)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 9 SU	all year
Oil and grease [soxhlet extr.] tot.	daily maximum	report only (mg/L)	all year
Oil and grease [soxhlet extr.] tot.	monthly average	report only (mg/L)	all year
Copper, total recoverable	daily maximum	report only (ug/L)	all year
Copper, total recoverable	monthly average	report only (ug/L)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year

How strict are these limits?

pH, minimum at least 6.5 SU — stricter than 16% of 973 other minor industrial and other permits in Missouri; 84% have the same limit

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

Same industry: the 3 Water Transportation permits in Missouri.

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/MO0138975 · MCP: https://passage-data.com/mcp