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Southern Natural Gas Company LLC - White Castle Compressor Station

Natural Gas Transmission, White Castle, Louisiana. NPDES permit LA0127046, in force until Aug 31, 2031. Last 12 months: over a limit 2 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly, form Q quarterly
Last report on file
June 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 endingParameterReportedLimitOver by
January 2026Carbon, tot organic [TOC], daily maximum90 mg/L≤ 50 mg/L80%
March 2026Carbon, tot organic [TOC], daily maximum79.7 mg/L≤ 50 mg/L59%

Limits in force (16)

ParameterStatisticLimitMonths
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 8.5 SUall year
pHinstantaneous maximum≤ 8.5 SUall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year
Lead, total [as Pb]monthly averagereport only (ug/L)all year
Lead, total [as Pb]daily maximumreport only (ug/L)all year
Zinc, total [as Zn]monthly averagereport only (ug/L)all year
Zinc, total [as Zn]daily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)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
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year

How strict are these limits?

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

Same industry: the 10 Natural Gas Transmission 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/LA0127046 · MCP: https://passage-data.com/mcp