AG PROCESSING INC a COOPERATIVE — NPDES permit IA0064262: limits, due date and EPA's record

Soybean Oil Mills, Manning, Iowa. NPDES permit IA0064262, in force until Oct 31, 2027. Last 12 months: over a limit 2 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
May 2026	BOD, 5-day, 20 deg. C, 30-day average	20.75	≤ 20 mg/L	4%
September 2026	BOD, 5-day, 20 deg. C, daily maximum	14.44596	≤ 14 lb/d	3%

Limits in force (107)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	30-day average	≤ 92 deg F	Jun	001
Temperature, water deg. fahrenheit	30-day average	≤ 87.5 deg F	May	001
Temperature, water deg. fahrenheit	30-day average	≤ 89.8 deg F	Oct	001
Temperature, water deg. fahrenheit	30-day average	≤ 92.6 deg F	Aug	001
Temperature, water deg. fahrenheit	30-day average	≤ 68.8 deg F	Feb	001
Temperature, water deg. fahrenheit	30-day average	≤ 80.7 deg F	Mar	001
Temperature, water deg. fahrenheit	30-day average	≤ 86.9 deg F	Apr	001
Temperature, water deg. fahrenheit	30-day average	≤ 68.8 deg F	Jan	001
Temperature, water deg. fahrenheit	30-day average	≤ 92.9 deg F	Sep	001
Temperature, water deg. fahrenheit	30-day average	≤ 72.2 deg F	Dec	001
Temperature, water deg. fahrenheit	30-day average	≤ 93 deg F	Jul	001
Temperature, water deg. fahrenheit	30-day average	≤ 81.6 deg F	Nov	001
Temperature, water deg. fahrenheit	daily maximum	≤ 94.8 deg F	Jun	001
Temperature, water deg. fahrenheit	daily maximum	≤ 95 deg F	May	001
Temperature, water deg. fahrenheit	daily maximum	≤ 94.9 deg F	Oct	001
Temperature, water deg. fahrenheit	daily maximum	≤ 92.6 deg F	Aug	001
Temperature, water deg. fahrenheit	daily maximum	≤ 96.5 deg F	Feb	001
Temperature, water deg. fahrenheit	daily maximum	≤ 95.9 deg F	Mar	001
Temperature, water deg. fahrenheit	daily maximum	≤ 95 deg F	Apr	001
Temperature, water deg. fahrenheit	daily maximum	≤ 96.5 deg F	Jan	001
Temperature, water deg. fahrenheit	daily maximum	≤ 94.4 deg F	Sep	001
Temperature, water deg. fahrenheit	daily maximum	≤ 96.2 deg F	Dec	001
Temperature, water deg. fahrenheit	daily maximum	≤ 93 deg F	Jul	001
Temperature, water deg. fahrenheit	daily maximum	≤ 95.7 deg F	Nov	001
BOD, 5-day, 20 deg. C	30-day average	≤ 20 mg/L	all year	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 30 mg/L	all year	002
BOD, 5-day, 20 deg. C	30-day average	≤ 9 lb/d	all year	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 14 lb/d	all year	002
BOD, 5-day, 20 deg. C	30-day average	report only (mg/L)	all year	002
BOD, 5-day, 20 deg. C	daily maximum	report only (mg/L)	all year	002
BOD, 5-day, 20 deg. C	30-day average	report only (lb/d)	all year	002
BOD, 5-day, 20 deg. C	daily maximum	report only (lb/d)	all year	002
pH	daily minimum	≥ 6 SU	all year	002
pH	daily maximum	≤ 9 SU	all year	002
pH	30-day average	report only (SU)	all year	002
pH	daily maximum	report only (SU)	all year	002
Solids, total suspended	30-day average	≤ 20 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 30 mg/L	all year	002
Solids, total suspended	30-day average	≤ 9 lb/d	all year	002
Solids, total suspended	daily maximum	≤ 14 lb/d	all year	002
Solids, total suspended	30-day average	report only (mg/L)	all year	002
Solids, total suspended	daily maximum	report only (mg/L)	all year	002
Solids, total suspended	30-day average	report only (lb/d)	all year	002
Solids, total suspended	daily maximum	report only (lb/d)	all year	002
Nitrogen, total [as N]	30-day average	report only (mg/L)	all year	002
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	002
Nitrogen, total [as N]	30-day average	report only (lb/d)	all year	002
Nitrogen, total [as N]	daily maximum	report only (lb/d)	all year	002
Nitrogen, ammonia total [as N]	30-day average	≤ 4.5 mg/L	Oct	002
Nitrogen, ammonia total [as N]	30-day average	≤ 10 mg/L	Jan	002
Nitrogen, ammonia total [as N]	30-day average	≤ 9.8 mg/L	Mar	002
Nitrogen, ammonia total [as N]	30-day average	≤ 2.8 mg/L	Jul	002
Nitrogen, ammonia total [as N]	30-day average	≤ 2.5 mg/L	Aug	002
Nitrogen, ammonia total [as N]	30-day average	≤ 3.9 mg/L	May	002
Nitrogen, ammonia total [as N]	30-day average	≤ 4.4 mg/L	Apr	002
Nitrogen, ammonia total [as N]	30-day average	≤ 3 mg/L	Sep	002
Nitrogen, ammonia total [as N]	30-day average	≤ 2.7 mg/L	Jun	002
Nitrogen, ammonia total [as N]	30-day average	≤ 6.8 mg/L	Nov	002
Nitrogen, ammonia total [as N]	30-day average	≤ 7.2 mg/L	Dec	002
Nitrogen, ammonia total [as N]	30-day average	≤ 11.5 mg/L	Feb	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.7 mg/L	Oct	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.2 mg/L	Jan	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.7 mg/L	Mar	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 17.6 mg/L	Jul	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 16.2 mg/L	Aug	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.2 mg/L	May	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.7 mg/L	Apr	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 16.5 mg/L	Sep	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.4 mg/L	Jun	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.7 mg/L	Nov	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 16 mg/L	Dec	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.2 mg/L	Feb	002
Nitrogen, ammonia total [as N]	30-day average	≤ 1.39 lb/d	Oct	002
Nitrogen, ammonia total [as N]	30-day average	≤ 3.05 lb/d	Jan	002
Nitrogen, ammonia total [as N]	30-day average	≤ 2.99 lb/d	Mar	002
Nitrogen, ammonia total [as N]	30-day average	≤ .89 lb/d	Jul	002
Nitrogen, ammonia total [as N]	30-day average	≤ .85 lb/d	Aug	002
Nitrogen, ammonia total [as N]	30-day average	≤ 1.55 lb/d	May	002
Nitrogen, ammonia total [as N]	30-day average	≤ 1.35 lb/d	Apr	002
Nitrogen, ammonia total [as N]	30-day average	≤ .94 lb/d	Sep	002
Nitrogen, ammonia total [as N]	30-day average	≤ 1.17 lb/d	Jun	002
Nitrogen, ammonia total [as N]	30-day average	≤ 2.08 lb/d	Nov	002
Nitrogen, ammonia total [as N]	30-day average	≤ 2.21 lb/d	Dec	002
Nitrogen, ammonia total [as N]	30-day average	≤ 3.51 lb/d	Feb	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.13 lb/d	Oct	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.03 lb/d	Jan	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.86 lb/d	Mar	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.77 lb/d	Jul	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.33 lb/d	Aug	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.99 lb/d	May	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.12 lb/d	Apr	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.39 lb/d	Sep	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.75 lb/d	Jun	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.8 lb/d	Nov	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.21 lb/d	Dec	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.76 lb/d	Feb	002
Phosphorus, total [as P]	30-day average	report only (mg/L)	all year	002
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	002
Phosphorus, total [as P]	30-day average	report only (lb/d)	all year	002
Phosphorus, total [as P]	daily maximum	report only (lb/d)	all year	002
pH	daily minimum	≥ 6.5 SU	all year	003
pH	daily maximum	≤ 9 SU	all year	003
Chlorine, total residual	30-day average	≤ .9 mg/L	all year	003
Chlorine, total residual	daily maximum	≤ .9 mg/L	all year	003
Chlorine, total residual	30-day average	≤ 7.53 lb/d	all year	003
Chlorine, total residual	daily maximum	≤ 7.53 lb/d	all year	003
E. coli	geometric mean	≤ 630 #/100mL	Mar–Nov	003

New limits from Oct 1, 2027

Parameter	New limit	New or tighter	Median, last 12 months	× new limit
Chloride [as Cl], 30-day average	126 lb/d	new	—	—
Chloride [as Cl], 30-day average	487 mg/L	new	—	—
Chloride [as Cl], daily maximum	642 mg/L	new	—	—
Chloride [as Cl], daily maximum	194 lb/d	new	—	—

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/IA0064262 · MCP: https://passage-data.com/mcp