AES INDIANA - EAGLE VALLEY GENERATING STATION — NPDES permit IN0004693: limits, due date and EPA's record

NPDES permit IN0004693 · Major NON-POTW · effective, expires 2028-03-31 · 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 (4).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (139)

Outfall	Parameter	Statistic	Limit	Months
003	Temperature, water deg. fahrenheit	MO AVG	report only	all year
003	Temperature, water deg. fahrenheit	DAILY MX	report only	all year
003	Temperature, water deg. fahrenheit	MO AVG	report only	all year
003	Temperature, water deg. fahrenheit	DAILY MX	report only	all year
003	Temperature, water deg. fahrenheit	MO AVG	report only	Jan, Feb
003	Temperature, water deg. fahrenheit	MO AVG	report only	Mar
003	Temperature, water deg. fahrenheit	MO AVG	report only	Apr, Nov
003	Temperature, water deg. fahrenheit	MO AVG	report only	May
003	Temperature, water deg. fahrenheit	MO AVG	report only	Jun, Jul, Aug, Sep
003	Temperature, water deg. fahrenheit	MO AVG	report only	Oct
003	Temperature, water deg. fahrenheit	MO AVG	report only	Dec
003	Temperature, water deg. fahrenheit	DAILY MX	<= 53 deg F	Jan, Feb
003	Temperature, water deg. fahrenheit	DAILY MX	<= 63 deg F	Mar
003	Temperature, water deg. fahrenheit	DAILY MX	<= 73 deg F	Apr, Nov
003	Temperature, water deg. fahrenheit	DAILY MX	<= 83 deg F	May
003	Temperature, water deg. fahrenheit	DAILY MX	<= 93 deg F	Jun, Jul, Aug, Sep
003	Temperature, water deg. fahrenheit	DAILY MX	<= 81 deg F	Oct
003	Temperature, water deg. fahrenheit	DAILY MX	<= 60 deg F	Dec
003	Streamflow	MO AVG	report only	all year
003	Streamflow	DAILY MX	report only	all year
003	Chlorine, total residual [dsg. time]	DAILY MX	<= 120 min/d	all year
003	pH	DAILY MN	>= 6 SU	all year
003	pH	DAILY MX	<= 9 SU	all year
003	Solids, total suspended	MO AVG	<= 29.2 mg/L	all year
003	Solids, total suspended	DAILY MX	<= 97.4 mg/L	all year
003	Oil and grease, hexane extr method	MO AVG	<= 14.6 mg/L	all year
003	Oil and grease, hexane extr method	DAILY MX	<= 19.5 mg/L	all year
003	Chloride [as Cl]	MO AVG	report only	all year
003	Chloride [as Cl]	DAILY MX	report only	all year
003	Sulfate, total [as SO4]	MO AVG	report only	all year
003	Sulfate, total [as SO4]	DAILY MX	report only	all year
003	Fluoride, total [as F]	MO AVG	report only	all year
003	Fluoride, total [as F]	DAILY MX	report only	all year
003	Arsenic, total recoverable	MO AVG	report only	all year
003	Arsenic, total recoverable	DAILY MX	report only	all year
003	Cobalt, total recoverable	MO AVG	report only	all year
003	Cobalt, total recoverable	DAILY MX	report only	all year
003	Selenium, total recoverable	MO AVG	report only	all year
003	Selenium, total recoverable	DAILY MX	report only	all year
003	Thallium, total recoverable	MO AVG	report only	all year
003	Thallium, total recoverable	DAILY MX	report only	all year
003	Barium, total recoverable	MO AVG	report only	all year
003	Barium, total recoverable	DAILY MX	report only	all year
003	Boron, total [as B]	MO AVG	report only	all year
003	Boron, total [as B]	DAILY MX	report only	all year
003	Zinc, total recoverable	MO AVG	report only	all year
003	Zinc, total recoverable	DAILY MX	report only	all year
003	Cadmium, total recoverable	MO AVG	report only	all year
003	Cadmium, total recoverable	DAILY MX	report only	all year
003	Lead, total recoverable	MO AVG	report only	all year
003	Lead, total recoverable	DAILY MX	report only	all year
003	Chromium, total recoverable	MO AVG	report only	all year
003	Chromium, total recoverable	DAILY MX	report only	all year
003	Molybdenum, total recoverable	MO AVG	report only	all year
003	Molybdenum, total recoverable	DAILY MX	report only	all year
003	Lithium, total [as Li]	MO AVG	report only	all year
003	Lithium, total [as Li]	DAILY MX	report only	all year
003	Chromium, hexavalent dissolved [as Cr]	MO AVG	report only	all year
003	Chromium, hexavalent dissolved [as Cr]	DAILY MX	report only	all year
003	Antimony, total recoverable	MO AVG	report only	all year
003	Antimony, total recoverable	DAILY MX	report only	all year
003	Oxidants, total residual	DAILY MX	<= .2 mg/L	all year
003	Oxidants, total residual	DAILY MX	< .06 mg/L	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Chlorine, total residual	DAILY MX	<= .2 mg/L	all year
003	Chlorine, total residual	MO AVG	< .06 mg/L	all year
003	Chlorine, total residual	DAILY MX	< .06 mg/L	all year
003	Toxicity [acute], Ceriodaphnia dubia	MAXIMUM	<= 1 tox acute (alert)	Mar, Sep
003	Toxicity [chronic], Ceriodaphnia dubia	MAXIMUM	<= 35.1 tox chronic (alert)	Mar, Sep
003	Toxicity [chronic], Ceriodaphnia dubia	MAXIMUM	<= 35.1 tox chronic (alert)	Apr, Oct
003	Solids, total dissolved	MO AVG	report only	all year
003	Solids, total dissolved	DAILY MX	report only	all year
003	Mercury, total recoverable	MO AVG	<= 12 ng/L	Feb, Apr, Jun, Aug, Oct, Dec
003	Mercury, total recoverable	DAILY MX	<= 20 ng/L	Feb, Apr, Jun, Aug, Oct, Dec
003	Chlorination frequency	DAILY MX	<= 4 occur/d	all year
003	Chlorination duration	DAILY MX	<= 40 min	all year
003	Flow, total	MO TOTAL	report only	all year
103	pH	DAILY MN	>= 6 SU	all year
103	pH	DAILY MX	<= 9 SU	all year
103	Solids, total suspended	MO AVG	<= 24 mg/L	all year
103	Solids, total suspended	DAILY MX	<= 78 mg/L	all year
103	Oil and grease, hexane extr method	MO AVG	<= 12 mg/L	all year
103	Oil and grease, hexane extr method	DAILY MX	<= 16 mg/L	all year
103	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
103	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
103	Phosphorus, total [as P]	MO AVG	report only	all year
103	Phosphorus, total [as P]	DAILY MX	report only	all year
103	Calcium, total recoverable	MO AVG	report only	all year
103	Calcium, total recoverable	DAILY MX	report only	all year
103	Chloride [as Cl]	MO AVG	report only	all year
103	Chloride [as Cl]	DAILY MX	report only	all year
103	Sulfate, total [as SO4]	MO AVG	report only	all year
103	Sulfate, total [as SO4]	DAILY MX	report only	all year
103	Fluoride, total [as F]	MO AVG	report only	all year
103	Fluoride, total [as F]	DAILY MX	report only	all year
103	Arsenic, total recoverable	MO AVG	report only	all year
103	Arsenic, total recoverable	DAILY MX	report only	all year
103	Cobalt, total recoverable	MO AVG	report only	all year
103	Cobalt, total recoverable	DAILY MX	report only	all year
103	Selenium, total recoverable	MO AVG	report only	all year
103	Selenium, total recoverable	DAILY MX	report only	all year
103	Thallium, total recoverable	MO AVG	report only	all year
103	Thallium, total recoverable	DAILY MX	report only	all year
103	Beryllium, total recoverable [as Be]	MO AVG	report only	all year
103	Beryllium, total recoverable [as Be]	DAILY MX	report only	all year
103	Boron, total recoverable	MO AVG	report only	all year
103	Boron, total recoverable	DAILY MX	report only	all year
103	Barium, total recoverable	MO AVG	report only	all year
103	Barium, total recoverable	DAILY MX	report only	all year
103	Nickel, total recoverable	MO AVG	report only	all year
103	Nickel, total recoverable	DAILY MX	report only	all year
103	Zinc, total recoverable	MO AVG	report only	all year
103	Zinc, total recoverable	DAILY MX	report only	all year
103	Aluminum, total recoverable	MO AVG	report only	all year
103	Aluminum, total recoverable	DAILY MX	report only	all year
103	Cadmium, total recoverable	MO AVG	report only	all year
103	Cadmium, total recoverable	DAILY MX	report only	all year
103	Lead, total recoverable	MO AVG	report only	all year
103	Lead, total recoverable	DAILY MX	report only	all year
103	Chromium, total recoverable	MO AVG	report only	all year
103	Chromium, total recoverable	DAILY MX	report only	all year
103	Molybdenum, total recoverable	MO AVG	report only	all year
103	Molybdenum, total recoverable	DAILY MX	report only	all year
103	Lithium, total [as Li]	MO AVG	report only	all year
103	Lithium, total [as Li]	DAILY MX	report only	all year
103	Chromium, hexavalent dissolved [as Cr]	MO AVG	report only	all year
103	Chromium, hexavalent dissolved [as Cr]	DAILY MX	report only	all year
103	Antimony, total recoverable	MO AVG	report only	all year
103	Antimony, total recoverable	DAILY MX	report only	all year
103	Manganese, total recoverable	MO AVG	report only	all year
103	Manganese, total recoverable	DAILY MX	report only	all year
103	Radium 226 + radium 228, total	MO AVG	report only	all year
103	Radium 226 + radium 228, total	DAILY MX	report only	all year
103	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
103	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
103	Solids, total dissolved	MO AVG	report only	all year
103	Solids, total dissolved	DAILY MX	report only	all year
103	Mercury, total recoverable	DAILY MX	report only	Feb, Apr, Jun, Aug, Oct, Dec