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Ohmstede Ltd - Ohmstede Ltd St Gabriel Plant

Repair Services, St. Gabriel, Louisiana. NPDES permit LA0059544, in force until Feb 28, 2031. Last 12 months: over a limit 3 times (last June 2026), 1 of 2 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form S twice a year
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 2 reports late

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

Period endingParameterReportedLimitOver by
December 2025Oxygen, dissolved [DO], monthly average minimum1.95 mg/L≥ 5 mg/L61%
June 2026Nitrogen, ammonia total [as N], monthly average3.3 mg/L≤ 2 mg/L65%
June 2026Oxygen, dissolved [DO], monthly average minimum3.3 mg/L≥ 5 mg/L34%

Limits in force (17)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year
Chlorine, total residualdaily maximum≤ .2 mg/Lall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year

How strict are these limits?

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

Same industry: the 4 Miscellaneous Repair Services permits in Louisiana.

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/LA0059544 · MCP: https://passage-data.com/mcp