FAIRFIELD MANUFACTURING CO. — NPDES permit IN0001481: limits, due date and EPA's record

NPDES permit IN0001481 · Minor NON-POTW · effective, expires 2026-09-30 · EPA's file as of 2026-09-19

EPA's record, 2025-09-01 to 2026-08-31

Last period with anything received: 2026-07-31. Most often over: Temperature, water deg. fahrenheit (2), Oil and grease, hexane extr method (1).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among IN permits in EPA's filings — check your permit).

Limits in force (23)

Outfall	Parameter	Statistic	Limit	Months
001	Temperature, water deg. fahrenheit	MO AVG	report only	Apr, Nov
001	Temperature, water deg. fahrenheit	MO AVG	report only	Mar
001	Temperature, water deg. fahrenheit	MO AVG	report only	Jan, Feb
001	Temperature, water deg. fahrenheit	MO AVG	report only	May
001	Temperature, water deg. fahrenheit	MO AVG	report only	Jun, Jul, Aug, Sep
001	Temperature, water deg. fahrenheit	MO AVG	report only	Oct
001	Temperature, water deg. fahrenheit	MO AVG	report only	Dec
001	Temperature, water deg. fahrenheit	DAILY MX	<= 75 deg F	Apr, Nov
001	Temperature, water deg. fahrenheit	DAILY MX	<= 65 deg F	Mar
001	Temperature, water deg. fahrenheit	DAILY MX	<= 55 deg F	Jan, Feb
001	Temperature, water deg. fahrenheit	DAILY MX	<= 85 deg F	May
001	Temperature, water deg. fahrenheit	DAILY MX	<= 95 deg F	Jun, Jul, Aug, Sep
001	Temperature, water deg. fahrenheit	DAILY MX	<= 83 deg F	Oct
001	Temperature, water deg. fahrenheit	DAILY MX	<= 62 deg F	Dec
001	pH	DAILY MN	>= 6 SU	all year
001	pH	DAILY MX	<= 9 SU	all year
001	Oil and grease, hexane extr method	MO AVG	report only	all year
001	Oil and grease, hexane extr method	DAILY MX	<= 5 mg/L	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Chlorine, total residual	MO AVG	< .06 mg/L	all year
001	Chlorine, total residual	DAILY MX	< .06 mg/L	all year
001	Flow, total	MO TOTAL	report only	all year