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United States Gypsum Company

Reconstituted Wood Products, Fort Dodge, Iowa. NPDES permit IA0062359 expired Dec 31, 2015; its limits still apply. Last 12 months: over a limit once (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (18 values), outfall 002 form A monthly (3 values), outfall 003 form A monthly (3 values), outfall 004 form A monthly (3 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 48 reports late

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

Period endingParameterReportedLimitOver by
April 2026Solids, total suspended, daily maximum34≤ 30 mg/L13%

Limits in force (49)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 30 mg/Lall year001
Solids, total suspended30-day average≤ 30 mg/Lall year001
Solids, total suspended7-day average≤ 45 mg/Lall year001
Solids, total suspended30-day average≤ 2.3 lb/dall year001
Solids, total suspended7-day average≤ 3.4 lb/dall year001
Nitrogen, ammonia total [as N]30-day average≤ 1.8 mg/LMay001
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LJul001
Nitrogen, ammonia total [as N]30-day average≤ 5.8 mg/LFeb001
Nitrogen, ammonia total [as N]30-day average≤ 1.3 mg/LJun001
Nitrogen, ammonia total [as N]30-day average≤ 2.7 mg/LOct001
Nitrogen, ammonia total [as N]30-day average≤ 3.9 mg/LDec001
Nitrogen, ammonia total [as N]30-day average≤ 1.5 mg/LSep001
Nitrogen, ammonia total [as N]30-day average≤ 2.7 mg/LNov001
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LAug001
Nitrogen, ammonia total [as N]30-day average≤ 3.9 mg/LMar001
Nitrogen, ammonia total [as N]30-day average≤ 2.1 mg/LApr001
Nitrogen, ammonia total [as N]30-day average≤ 5.2 mg/LJan001
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LDec001
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 19.9 mg/LJan001
Nitrogen, nitrate total [as N]30-day average≤ 2.4 lb/dall year001
Nitrogen, nitrate total [as N]daily maximum≤ 7.46 lb/dall year001
E. coli30-day average≤ 630 #/100mLMar–Nov001
BOD, carbonaceous [5 day, 20 C]30-day average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]30-day average≤ 1.9 lb/dall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 3 lb/dall year001
pHdaily minimum≥ 6.5 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspendeddaily maximum≤ 30 mg/Lall year002
pHdaily minimum≥ 6.5 SUall year003
pHdaily maximum≤ 9 SUall year003
Solids, total suspendeddaily maximum≤ 30 mg/Lall year003
pHdaily minimum≥ 6.5 SUall year004
pHdaily maximum≤ 9 SUall year004
Solids, total suspendeddaily maximum≤ 30 mg/Lall year004

How strict are these limits?

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

Same industry: the 3 Lumber and Wood Products permits in Iowa.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0062359 · MCP: https://passage-data.com/mcp