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Valero Renewable Fuels Company, D/B/A Valero Lakota Plant

Industrial Organic Chemicals, Lakota, Iowa. NPDES permit IA0077194, in force until Jul 31, 2030. Last 12 months: over a limit once (last July 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (20 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
July 2026Nitrogen, ammonia total [as N], 30-day average1.47≤ 1.1 mg/L34%

Limits in force (86)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheit30-day average≤ 82.9 deg FApr
Temperature, water deg. fahrenheit30-day average≤ 90.3 deg FSep
Temperature, water deg. fahrenheit30-day average≤ 94.3 deg FOct
Temperature, water deg. fahrenheit30-day average≤ 71.1 deg FJan
Temperature, water deg. fahrenheit30-day average≤ 80.9 deg FNov
Temperature, water deg. fahrenheit30-day average≤ 90.2 deg FAug
Temperature, water deg. fahrenheit30-day average≤ 80.7 deg FFeb
Temperature, water deg. fahrenheit30-day average≤ 87.8 deg FMar
Temperature, water deg. fahrenheit30-day average≤ 90.4 deg FJun
Temperature, water deg. fahrenheit30-day average≤ 71.8 deg FDec
Temperature, water deg. fahrenheit30-day average≤ 85.4 deg FMay
Temperature, water deg. fahrenheit30-day average≤ 90.2 deg FJul
Temperature, water deg. fahrenheitdaily maximum≤ 90.7 deg FApr
Temperature, water deg. fahrenheitdaily maximum≤ 90.3 deg FSep
Temperature, water deg. fahrenheitdaily maximum≤ 94.3 deg FOct
Temperature, water deg. fahrenheitdaily maximum≤ 91.2 deg FJan
Temperature, water deg. fahrenheitdaily maximum≤ 90.8 deg FNov
Temperature, water deg. fahrenheitdaily maximum≤ 90.2 deg FAug
Temperature, water deg. fahrenheitdaily maximum≤ 91.2 deg FFeb
Temperature, water deg. fahrenheitdaily maximum≤ 91.1 deg FMar
Temperature, water deg. fahrenheitdaily maximum≤ 90.4 deg FJun
Temperature, water deg. fahrenheitdaily maximum≤ 91.1 deg FDec
Temperature, water deg. fahrenheitdaily maximum≤ 94.3 deg FMay
Temperature, water deg. fahrenheitdaily maximum≤ 90.2 deg FJul
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Nitrogen, ammonia total [as N]30-day average≤ 1.7 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 2.7 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 4.4 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 2.6 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 1.5 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 1.7 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 1.9 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 1.2 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 3.8 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 3.8 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 5.8 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 5.8 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 7 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 7 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 5.8 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 5.8 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 5.8 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 4.8 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 4.8 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 5.8 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 10.2 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 8.5 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 12.5 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 8 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 19.9 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 31.6 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 18.8 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 10.9 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 12.7 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 14.4 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 8.7 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 8.5 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 27.2 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 27.5 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 44 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 45 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 52.3 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 52 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 43.5 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 44.8 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 43.8 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 36.5 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 36.3 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 45.2 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 75.7 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 63.7 lb/dMar
Sulfate, total [as SO4]30-day average≤ 1518 mg/Lall year
Sulfate, total [as SO4]daily maximum≤ 1518 mg/Lall year
Sulfate, total [as SO4]30-day average≤ 11192 lb/dall year
Sulfate, total [as SO4]daily maximum≤ 11192 lb/dall year
Iron, total [as Fe]30-day average≤ 1 mg/Lall year
Iron, total [as Fe]daily maximum≤ 1 mg/Lall year
Iron, total [as Fe]30-day average≤ 7.39 lb/dall year
Iron, total [as Fe]daily maximum≤ 7.39 lb/dall year
Chlorine, total residual30-day average≤ .012 mg/Lall year
Chlorine, total residualdaily maximum≤ .021 mg/Lall year
Chlorine, total residual30-day average≤ .128 lb/dall year
Chlorine, total residualdaily maximum≤ .229 lb/dall year

How strict are these limits?

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

Same industry: the 57 Chemicals and Allied Products permits in Iowa.

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Your permit document is the final word. As JSON: /api/v1/permits/IA0077194 · MCP: https://passage-data.com/mcp