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WESTLAKE COMPOUNDS LLC, dba WESTLAKE GLOBAL COMPOUNDS, GALLMAN

Custom Compound Purchased Resins, Hazlehurst, Mississippi. NPDES permit MS0036986, in force until Apr 30, 2027. Last 12 months: over a limit once (last October 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (21 values), form Q quarterly (8 values)
Renewal application due
Nov 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

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

Period endingParameterReportedLimitOver by
October 2025Zinc, total recoverable, daily maximum.082 mg/L≤ .065 mg/L26%

Limits in force (29)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg Fall year
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cdaily maximum≤ 29.68 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendeddaily maximum≤ 21.69 lb/dall year
Oil & Greasemonthly averagereport only (lb/d)all year
Oil & Greasedaily maximum≤ 22.8 lb/dall year
Nitrogen, total [as N]quarterly averagereport only (lb/d)all year
Nitrogen, total [as N]daily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/Lall year
Phosphate, total [as PO4]quarterly averagereport only (lb/d)all year
Phosphate, total [as PO4]daily maximumreport only (lb/d)all year
Zinc, total recoverablemonthly averagereport only (mg/L)all year
Zinc, total recoverabledaily maximum≤ .065 mg/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualquarterly averagereport only (mg/L)all year
Chlorine, total residualdaily maximumreport only (mg/L)all year
E. coliquarterly averagereport only (#/100mL)all year
E. colidaily maximumreport only (#/100mL)all year

How strict are these limits?

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

Same industry: the 3 Rubber and Miscellaneous Plastics Products permits in Mississippi.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0036986 · MCP: https://passage-data.com/mcp