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Interfor US, Inc.

Sawmills And Planing Mills, General, Dequincy, Louisiana. NPDES permit LA0079740, in force until Nov 30, 2027. Last 12 months: over a limit 5 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 004 form A quarterly (2 values), outfall 004 form Q quarterly (6 values), outfall 005 form A quarterly (2 values), outfall 005 form Q quarterly (6 values), outfall 007 form A quarterly (14 values), outfall 007 form S twice a year, and 1 more form
Renewal application due
Jun 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 0 of 48 reports late

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

Period endingOutfallParameterReportedLimitOver by
January 2026007Oxygen demand, chem. [high level] [COD], daily maximum901 mg/L≤ 300 mg/L200%
March 2026007Oxygen demand, chem. [high level] [COD], daily maximum444 mg/L≤ 300 mg/L48%
June 2026007Oxygen demand, chem. [high level] [COD], daily maximum411 mg/L≤ 300 mg/L37%
June 2026107Solids, total suspended, daily maximum52 mg/L≤ 45 mg/L16%
June 2026107Solids, total suspended, monthly average52 mg/L≤ 30 mg/L73%

Limits in force (46)

ParameterStatisticLimitMonthsOutfall
pHinstantaneous minimum≥ 6 SUall year004
pHinstantaneous minimumreport only (SU)all year004
pHinstantaneous minimumreport only (SU)all year004
pHinstantaneous maximum≤ 9 SUall year004
Oil & Greasedaily maximum≤ 15 mg/Lall year004
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year004
Chemical Oxygen Demand [COD]daily maximum≤ 200 mg/Lall year004
pHinstantaneous minimum≥ 6 SUall year005
pHinstantaneous minimumreport only (SU)all year005
pHinstantaneous minimumreport only (SU)all year005
pHinstantaneous maximum≤ 9 SUall year005
Oil & Greasedaily maximum≤ 15 mg/Lall year005
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year005
Chemical Oxygen Demand [COD]daily maximum≤ 250 mg/Lall year005
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year007
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year007
Oxygen demand, chem. [high level] [COD]daily maximum≤ 300 mg/Lall year007
Oxygen demand, chem. [high level] [COD]daily maximum≤ 300 mg/Lall year007
pHinstantaneous minimum≥ 6 SUall year007
pHinstantaneous minimum≥ 6 SUall year007
pHinstantaneous maximum≤ 9 SUall year007
pHinstantaneous maximum≤ 9 SUall year007
Oil & Greasedaily maximum≤ 15 mg/Lall year007
Oil & Greasedaily maximum≤ 15 mg/Lall year007
Nitrogen, total [as N]monthly averagereport only (mg/L)all year007
Nitrogen, total [as N]monthly averagereport only (mg/L)all year007
Nitrogen, total [as N]daily maximumreport only (mg/L)all year007
Nitrogen, total [as N]daily maximumreport only (mg/L)all year007
Phosphorus, total [as P]monthly averagereport only (mg/L)all year007
Phosphorus, total [as P]monthly averagereport only (mg/L)all year007
Phosphorus, total [as P]daily maximumreport only (mg/L)all year007
Phosphorus, total [as P]daily maximumreport only (mg/L)all year007
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year007
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year007
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year107
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year107
Solids, total suspendedmonthly average≤ 30 mg/Lall year107
Solids, total suspendeddaily maximum≤ 45 mg/Lall year107
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year107
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year107
Coliform, fecal generalmonthly average≤ 200 #/100mLall year107
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year107

How strict are these limits?

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

Same industry: the 18 Lumber and Wood Products permits in Louisiana.

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On EPA ECHO: Facility report · DMR history

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