CLEVELAND-CLIFFS RIVERDALE LLC — NPDES permit IL0002119: limits, due date and EPA's record

NPDES permit IL0002119 · Major NON-POTW · effective, expires 2028-09-30 · EPA's file as of 2026-09-19

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

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among IL permits in EPA's filings — check your permit).

Limits in force (262)

Outfall	Parameter	Statistic	Limit	Months
001	Cyanide, total [as CN]	DAILY MX	report only	all year
001	Cyanide, total [as CN]	DAILY MX	report only	all year
001	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
001	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
001	Chloride [as Cl]	DAILY MX	report only	all year
001	Chloride [as Cl]	DAILY MX	report only	all year
001	Sulfate, total [as SO4]	DAILY MX	report only	all year
001	Sulfate, total [as SO4]	DAILY MX	report only	all year
001	Fluoride, total [as F]	DAILY MX	report only	all year
001	Fluoride, total [as F]	DAILY MX	report only	all year
001	Arsenic, total [as As]	DAILY MX	report only	all year
001	Arsenic, total [as As]	DAILY MX	report only	all year
001	Barium, total [as Ba]	DAILY MX	report only	all year
001	Barium, total [as Ba]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
001	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
001	Chromium, total [as Cr]	DAILY MX	report only	all year
001	Chromium, total [as Cr]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY MX	<= .036 mg/L	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Iron, total [as Fe]	DAILY MX	report only	all year
001	Iron, total [as Fe]	DAILY MX	report only	all year
001	Iron, dissolved [as Fe]	DAILY MX	report only	all year
001	Iron, dissolved [as Fe]	DAILY MX	report only	all year
001	Lead, total [as Pb]	DAILY MX	report only	all year
001	Lead, total [as Pb]	DAILY MX	report only	all year
001	Manganese, total [as Mn]	DAILY MX	report only	all year
001	Manganese, total [as Mn]	DAILY MX	report only	all year
001	Nickel, total [as Ni]	DAILY MX	report only	all year
001	Nickel, total [as Ni]	DAILY MX	report only	all year
001	Silver, total [as Ag]	DAILY MX	report only	all year
001	Silver, total [as Ag]	DAILY MX	report only	all year
001	Zinc, total [as Zn]	DAILY MX	<= .229 mg/L	all year
001	Zinc, total [as Zn]	DAILY MX	report only	all year
001	Zinc, total [as Zn]	DAILY MX	report only	all year
001	Selenium, total [as Se]	DAILY MX	report only	all year
001	Selenium, total [as Se]	DAILY MX	report only	all year
001	Oil and grease	DAILY MX	report only	all year
001	Oil and grease	DAILY MX	report only	all year
001	Phenolics, total recoverable	DAILY MX	report only	all year
001	Phenolics, total recoverable	DAILY MX	report only	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	Mercury, total [as Hg]	DAILY MX	report only	all year
001	Mercury, total [as Hg]	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Chlorine, total residual	DAILY MX	<= .05 mg/L	all year
003	Temperature, water deg. fahrenheit	MO MAX	<= 63 deg F	Jan, Feb, Mar, Dec
003	Temperature, water deg. fahrenheit	MO MAX	<= 93 deg F	Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
003	pH	MO MIN	>= 6 SU	all year
003	pH	MO MAX	<= 9 SU	all year
003	Temperature, length of excursion	ANNL TOT	<= 97 hr/12mo	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	<= .05 mg/L	all year
003	Temperature Increase Deg. F	MO MAX	<= 5 deg F	all year
004	Cyanide, total [as CN]	DAILY MX	report only	all year
004	Cyanide, total [as CN]	DAILY MX	report only	all year
004	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
004	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
004	Chloride [as Cl]	DAILY MX	report only	all year
004	Chloride [as Cl]	DAILY MX	report only	all year
004	Sulfate, total [as SO4]	DAILY MX	report only	all year
004	Sulfate, total [as SO4]	DAILY MX	report only	all year
004	Fluoride, total [as F]	DAILY MX	report only	all year
004	Fluoride, total [as F]	DAILY MX	report only	all year
004	Arsenic, total [as As]	DAILY MX	report only	all year
004	Arsenic, total [as As]	DAILY MX	report only	all year
004	Barium, total [as Ba]	DAILY MX	report only	all year
004	Barium, total [as Ba]	DAILY MX	report only	all year
004	Cadmium, total [as Cd]	DAILY MX	report only	all year
004	Cadmium, total [as Cd]	DAILY MX	report only	all year
004	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
004	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
004	Chromium, total [as Cr]	DAILY MX	report only	all year
004	Chromium, total [as Cr]	DAILY MX	report only	all year
004	Copper, total [as Cu]	DAILY MX	<= .036 mg/L	all year
004	Copper, total [as Cu]	DAILY MX	report only	all year
004	Copper, total [as Cu]	DAILY MX	report only	all year
004	Iron, total [as Fe]	DAILY MX	report only	all year
004	Iron, total [as Fe]	DAILY MX	report only	all year
004	Iron, dissolved [as Fe]	DAILY MX	report only	all year
004	Iron, dissolved [as Fe]	DAILY MX	report only	all year
004	Lead, total [as Pb]	DAILY MX	report only	all year
004	Lead, total [as Pb]	DAILY MX	report only	all year
004	Manganese, total [as Mn]	DAILY MX	report only	all year
004	Manganese, total [as Mn]	DAILY MX	report only	all year
004	Nickel, total [as Ni]	DAILY MX	report only	all year
004	Nickel, total [as Ni]	DAILY MX	report only	all year
004	Silver, total [as Ag]	DAILY MX	report only	all year
004	Silver, total [as Ag]	DAILY MX	report only	all year
004	Zinc, total [as Zn]	DAILY MX	<= .229 mg/L	all year
004	Zinc, total [as Zn]	DAILY MX	report only	all year
004	Zinc, total [as Zn]	DAILY MX	report only	all year
004	Selenium, total [as Se]	DAILY MX	report only	all year
004	Selenium, total [as Se]	DAILY MX	report only	all year
004	Oil and grease	DAILY MX	report only	all year
004	Oil and grease	DAILY MX	report only	all year
004	Phenolics, total recoverable	DAILY MX	report only	all year
004	Phenolics, total recoverable	DAILY MX	report only	all year
004	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
004	Mercury, total [as Hg]	DAILY MX	report only	all year
004	Mercury, total [as Hg]	DAILY MX	report only	all year
014	Temperature, water deg. fahrenheit	MO MAX	<= 63 deg F	Jan, Feb, Mar, Dec
014	Temperature, water deg. fahrenheit	MO MAX	<= 93 deg F	Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
014	pH	MO MIN	>= 6 SU	all year
014	pH	MO MAX	<= 9 SU	all year
014	Cyanide, total [as CN]	DAILY MX	report only	all year
014	Cyanide, total [as CN]	DAILY MX	report only	all year
014	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
014	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
014	Chloride [as Cl]	DAILY MX	report only	all year
014	Chloride [as Cl]	DAILY MX	report only	all year
014	Sulfate, total [as SO4]	DAILY MX	report only	all year
014	Sulfate, total [as SO4]	DAILY MX	report only	all year
014	Fluoride, total [as F]	DAILY MX	report only	all year
014	Fluoride, total [as F]	DAILY MX	report only	all year
014	Arsenic, total [as As]	DAILY MX	report only	all year
014	Arsenic, total [as As]	DAILY MX	report only	all year
014	Barium, total [as Ba]	DAILY MX	report only	all year
014	Barium, total [as Ba]	DAILY MX	report only	all year
014	Cadmium, total [as Cd]	DAILY MX	report only	all year
014	Cadmium, total [as Cd]	DAILY MX	report only	all year
014	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
014	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
014	Chromium, total [as Cr]	DAILY MX	report only	all year
014	Chromium, total [as Cr]	DAILY MX	report only	all year
014	Copper, total [as Cu]	DAILY MX	<= .036 mg/L	all year
014	Copper, total [as Cu]	DAILY MX	report only	all year
014	Copper, total [as Cu]	DAILY MX	report only	all year
014	Iron, total [as Fe]	DAILY MX	report only	all year
014	Iron, total [as Fe]	DAILY MX	report only	all year
014	Iron, dissolved [as Fe]	DAILY MX	report only	all year
014	Iron, dissolved [as Fe]	DAILY MX	report only	all year
014	Lead, total [as Pb]	DAILY MX	report only	all year
014	Lead, total [as Pb]	DAILY MX	report only	all year
014	Manganese, total [as Mn]	DAILY MX	report only	all year
014	Manganese, total [as Mn]	DAILY MX	report only	all year
014	Nickel, total [as Ni]	DAILY MX	report only	all year
014	Nickel, total [as Ni]	DAILY MX	report only	all year
014	Silver, total [as Ag]	DAILY MX	report only	all year
014	Silver, total [as Ag]	DAILY MX	report only	all year
014	Zinc, total [as Zn]	DAILY MX	<= .229 mg/L	all year
014	Zinc, total [as Zn]	DAILY MX	report only	all year
014	Zinc, total [as Zn]	DAILY MX	report only	all year
014	Selenium, total [as Se]	DAILY MX	report only	all year
014	Selenium, total [as Se]	DAILY MX	report only	all year
014	Oil and grease	DAILY MX	report only	all year
014	Oil and grease	DAILY MX	report only	all year
014	Phenolics, total recoverable	DAILY MX	report only	all year
014	Phenolics, total recoverable	DAILY MX	report only	all year
014	Temperature, length of excursion	ANNL TOT	<= 87 hr/12mo	all year
014	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
014	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
014	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
014	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
014	Chlorine, total residual	DAILY MX	<= .05 mg/L	all year
014	Mercury, total [as Hg]	DAILY MX	report only	all year
014	Mercury, total [as Hg]	DAILY MX	report only	all year
015	Cyanide, total [as CN]	DAILY MX	report only	all year
015	Cyanide, total [as CN]	DAILY MX	report only	all year
015	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
015	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
015	Chloride [as Cl]	DAILY MX	report only	all year
015	Chloride [as Cl]	DAILY MX	report only	all year
015	Sulfate, total [as SO4]	DAILY MX	report only	all year
015	Sulfate, total [as SO4]	DAILY MX	report only	all year
015	Fluoride, total [as F]	DAILY MX	report only	all year
015	Fluoride, total [as F]	DAILY MX	report only	all year
015	Arsenic, total [as As]	DAILY MX	report only	all year
015	Arsenic, total [as As]	DAILY MX	report only	all year
015	Barium, total [as Ba]	DAILY MX	report only	all year
015	Barium, total [as Ba]	DAILY MX	report only	all year
015	Cadmium, total [as Cd]	DAILY MX	report only	all year
015	Cadmium, total [as Cd]	DAILY MX	report only	all year
015	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
015	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
015	Chromium, total [as Cr]	DAILY MX	report only	all year
015	Chromium, total [as Cr]	DAILY MX	report only	all year
015	Copper, total [as Cu]	DAILY MX	<= .036 mg/L	all year
015	Copper, total [as Cu]	DAILY MX	report only	all year
015	Copper, total [as Cu]	DAILY MX	report only	all year
015	Iron, total [as Fe]	DAILY MX	report only	all year
015	Iron, total [as Fe]	DAILY MX	report only	all year
015	Iron, dissolved [as Fe]	DAILY MX	report only	all year
015	Iron, dissolved [as Fe]	DAILY MX	report only	all year
015	Lead, total [as Pb]	DAILY MX	report only	all year
015	Lead, total [as Pb]	DAILY MX	report only	all year
015	Manganese, total [as Mn]	DAILY MX	report only	all year
015	Manganese, total [as Mn]	DAILY MX	report only	all year
015	Nickel, total [as Ni]	DAILY MX	report only	all year
015	Nickel, total [as Ni]	DAILY MX	report only	all year
015	Silver, total [as Ag]	DAILY MX	report only	all year
015	Silver, total [as Ag]	DAILY MX	report only	all year
015	Zinc, total [as Zn]	DAILY MX	<= .229 mg/L	all year
015	Zinc, total [as Zn]	DAILY MX	report only	all year
015	Zinc, total [as Zn]	DAILY MX	report only	all year
015	Selenium, total [as Se]	DAILY MX	report only	all year
015	Selenium, total [as Se]	DAILY MX	report only	all year
015	Oil and grease	DAILY MX	report only	all year
015	Oil and grease	DAILY MX	report only	all year
015	Phenolics, total recoverable	DAILY MX	report only	all year
015	Phenolics, total recoverable	DAILY MX	report only	all year
015	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
015	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
015	Mercury, total [as Hg]	DAILY MX	report only	all year
015	Mercury, total [as Hg]	DAILY MX	report only	all year
016	Cyanide, total [as CN]	DAILY MX	report only	all year
016	Cyanide, total [as CN]	DAILY MX	report only	all year
016	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
016	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
016	Chloride [as Cl]	DAILY MX	report only	all year
016	Chloride [as Cl]	DAILY MX	report only	all year
016	Sulfate, total [as SO4]	DAILY MX	report only	all year
016	Sulfate, total [as SO4]	DAILY MX	report only	all year
016	Fluoride, total [as F]	DAILY MX	report only	all year
016	Fluoride, total [as F]	DAILY MX	report only	all year
016	Arsenic, total [as As]	DAILY MX	report only	all year
016	Arsenic, total [as As]	DAILY MX	report only	all year
016	Barium, total [as Ba]	DAILY MX	report only	all year
016	Barium, total [as Ba]	DAILY MX	report only	all year
016	Cadmium, total [as Cd]	DAILY MX	report only	all year
016	Cadmium, total [as Cd]	DAILY MX	report only	all year
016	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
016	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
016	Chromium, total [as Cr]	DAILY MX	report only	all year
016	Chromium, total [as Cr]	DAILY MX	report only	all year
016	Copper, total [as Cu]	DAILY MX	<= .036 mg/L	all year
016	Copper, total [as Cu]	DAILY MX	report only	all year
016	Copper, total [as Cu]	DAILY MX	report only	all year
016	Iron, total [as Fe]	DAILY MX	report only	all year
016	Iron, total [as Fe]	DAILY MX	report only	all year
016	Iron, dissolved [as Fe]	DAILY MX	report only	all year
016	Iron, dissolved [as Fe]	DAILY MX	report only	all year
016	Lead, total [as Pb]	DAILY MX	report only	all year
016	Lead, total [as Pb]	DAILY MX	report only	all year
016	Manganese, total [as Mn]	DAILY MX	report only	all year
016	Manganese, total [as Mn]	DAILY MX	report only	all year
016	Nickel, total [as Ni]	DAILY MX	report only	all year
016	Nickel, total [as Ni]	DAILY MX	report only	all year
016	Silver, total [as Ag]	DAILY MX	report only	all year
016	Silver, total [as Ag]	DAILY MX	report only	all year
016	Zinc, total [as Zn]	DAILY MX	<= .229 mg/L	all year
016	Zinc, total [as Zn]	DAILY MX	report only	all year
016	Zinc, total [as Zn]	DAILY MX	report only	all year
016	Selenium, total [as Se]	DAILY MX	report only	all year
016	Selenium, total [as Se]	DAILY MX	report only	all year
016	Oil and grease	DAILY MX	report only	all year
016	Oil and grease	DAILY MX	report only	all year
016	Phenolics, total recoverable	DAILY MX	report only	all year
016	Phenolics, total recoverable	DAILY MX	report only	all year
016	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
016	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
016	Mercury, total [as Hg]	DAILY MX	report only	all year
016	Mercury, total [as Hg]	DAILY MX	report only	all year