CLARK COUNTY DEPARTMENT OF AVIATION — NPDES permit NV0023761: limits, due date and EPA's record

NPDES permit NV0023761 · Minor NON-POTW · effective, expires 2029-07-31 · EPA's file as of 2026-09-19

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

Last period with anything received: 2026-06-30. Most often over: Solids, total dissolved (2), pH, minimum (1).

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 (310)

Outfall	Parameter	Statistic	Limit	Months
001	Flow rate	30DA AVG	report only	all year
001	Flow rate	30DA AVG	report only	all year
001	Flow rate	30DA AVG	report only	all year
001	Flow rate	30DA AVG	report only	all year
001	Flow rate	DAILY MX	report only	all year
001	Flow rate	DAILY MX	report only	all year
001	Flow rate	DAILY MX	report only	all year
001	Flow rate	DAILY MX	report only	all year
001	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
001	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
001	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
001	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
001	Nitrogen, inorganic total	DAILY MX	report only	all year
001	Nitrogen, inorganic total	DAILY MX	report only	all year
001	Phosphorus, total [as P]	DAILY MX	report only	all year
001	Phosphorus, total [as P]	DAILY MX	report only	all year
001	Phosphorus, total [as P]	DAILY MX	report only	all year
001	Phosphorus, total [as P]	DAILY MX	report only	all year
001	Cyanide, total [as CN]	DAILY MX	<= 22 ug/L	all year
001	Sulfide, total [as S]	DAILY MX	<= 2 ug/L	all year
001	Fluoride, total [as F]	DAILY MX	<= 1000 ug/L	all year
001	Arsenic, total recoverable	DAILY MX	<= 100 ug/L	all year
001	Iron, total recoverable	DAILY MX	<= 1000 ug/L	all year
001	Beryllium, total recoverable [as Be]	DAILY MX	<= 100 ug/L	all year
001	Boron, total recoverable	DAILY MX	report only	all year
001	Cadmium, dissolved [as Cd]	DAILY MX	<= 7.6 ug/L	all year
001	Chromium, hexavalent [as Cr]	DAILY MX	<= 16 ug/L	all year
001	Chromium, trivalent [as Cr]	DAILY MX	<= 2024 ug/L	all year
001	Copper, dissolved [as Cu]	DAILY MX	<= 58 ug/L	all year
001	Lead, dissolved [as Pb]	DAILY MX	<= 100 ug/L	all year
001	Nickel, total recoverable	DAILY MX	<= 200 ug/L	all year
001	Silver total recoverable	DAILY MX	<= 46 ug/L	all year
001	Zinc, dissolved [as Zn]	DAILY MX	<= 435 ug/L	all year
001	Chromium, total recoverable	DAILY MX	<= 100 ug/L	all year
001	Molybdenum, total recoverable	DAILY MX	<= 6160 ug/L	all year
001	Selenium, dissolved [as Se]	DAILY MX	report only	all year
001	Tributyltin	DAILY MX	<= .46 ug/L	all year
001	Manganese, total recoverable	DAILY MX	<= 200 ug/L	all year
001	Dichlorobromomethane	DAILY MX	report only	all year
001	Carbon tetrachloride	DAILY MX	report only	all year
001	1,2-Dichloroethane	DAILY MX	report only	all year
001	Bromoform	DAILY MX	report only	all year
001	Dibromochloromethane	DAILY MX	report only	all year
001	Chloroform	DAILY MX	report only	all year
001	Chloroform	DAILY MX	report only	all year
001	Toluene	DAILY MX	report only	all year
001	Benzene	DAILY MX	report only	all year
001	Acrolein	DAILY MX	<= 3 ug/L	all year
001	Chlorobenzene	DAILY MX	report only	all year
001	.beta.-Endosulfan	DAILY MX	<= .22 ug/L	all year
001	.alpha.-Endosulfan	DAILY MX	<= .22 ug/L	all year
001	Ethylbenzene	DAILY MX	report only	all year
001	Methyl bromide [Bromomethane]	DAILY MX	report only	all year
001	Methyl chloride [Chloromethane]	DAILY MX	report only	all year
001	Methylene chloride	DAILY MX	report only	all year
001	Tetrachloroethylene	DAILY MX	report only	all year
001	Trichlorofluoromethane	DAILY MX	report only	all year
001	1,1-Dichloroethane	DAILY MX	report only	all year
001	1,1-Dichloroethylene	DAILY MX	report only	all year
001	1,1,1-Trichloroethane	DAILY MX	report only	all year
001	1,1,2-Trichloroethane	DAILY MX	report only	all year
001	1,1,2,2-Tetrachloroethane	DAILY MX	report only	all year
001	1,2-Dichlorobenzene	DAILY MX	report only	all year
001	1,2-Dichloropropane	DAILY MX	report only	all year
001	trans-1,2-Dichloroethylene	DAILY MX	report only	all year
001	1,3-Dichlorobenzene	DAILY MX	report only	all year
001	1,4-Dichlorobenzene	DAILY MX	report only	all year
001	2-Chloroethyl vinyl ether, [mixed]	DAILY MX	report only	all year
001	trans-1,3-Dichloropropene	DAILY MX	report only	all year
001	cis-1,3-Dichloropropene	DAILY MX	report only	all year
001	Chlorpyrifos	DAILY MX	<= .08 ug/L	all year
001	Pentachlorophenol	DAILY MX	report only	all year
001	Vinyl chloride	DAILY MX	report only	all year
001	Trichloroethylene	DAILY MX	report only	all year
001	4,4'-DDT	DAILY MX	<= 1.1 ug/L	all year
001	Aldrin	DAILY MX	<= 3 ug/L	all year
001	Chlordane [tech mix. and metabolites]	DAILY MX	<= 2.4 ug/L	all year
001	Dieldrin	DAILY MX	<= .24 ug/L	all year
001	Endrin	DAILY MX	<= .09 ug/L	all year
001	Toxaphene	DAILY MX	<= .73 ug/L	all year
001	Heptachlor	DAILY MX	<= .52 ug/L	all year
001	Heptachlor epoxide	DAILY MX	<= .52 ug/L	all year
001	Methoxychlor	DAILY MX	<= .03 ug/L	all year
001	Polychlorinated biphenyls [PCBs]	DAILY MX	<= .01 ug/L	all year
001	Malathion	DAILY MX	<= .1 ug/L	all year
001	Parathion	DAILY MX	<= .07 ug/L	all year
001	Demeton	DAILY MX	<= .1 ug/L	all year
001	Diazinon	DAILY MX	<= .17 ug/L	all year
001	Mirex	DAILY MX	<= .001 ug/L	all year
001	Lindane	DAILY MX	<= .95 ug/L	all year
001	Nonylphenol	DAILY MX	<= 28 ug/L	all year
001	pH, maximum	DAILY MX	<= 9 SU	all year
001	pH, maximum	DAILY MX	<= 9 SU	all year
001	pH, minimum	DAILY MN	>= 6.5 SU	all year
001	pH, minimum	DAILY MN	>= 6.5 SU	all year
001	Solids, total dissolved	DAILY MX	<= 1900 mg/L	all year
001	Solids, total dissolved	DAILY MX	<= 1900 mg/L	all year
001	Mercury, dissolved [as Hg]	DAILY MX	<= 1.4 ug/L	all year
001	Hydrocarbons, total petroleum	DAILY MX	<= 1 mg/L	all year
001	Hydrocarbons, total petroleum	DAILY MX	<= 1 mg/L	all year
001	Azinphos-methyl	DAILY MX	<= .01 ug/L	all year
001	Chloroethane	DAILY MX	report only	all year
002	Flow rate	30DA AVG	report only	all year
002	Flow rate	30DA AVG	report only	all year
002	Flow rate	30DA AVG	report only	all year
002	Flow rate	30DA AVG	report only	all year
002	Flow rate	DAILY MX	report only	all year
002	Flow rate	DAILY MX	report only	all year
002	Flow rate	DAILY MX	report only	all year
002	Flow rate	DAILY MX	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
002	Nitrogen, inorganic total	DAILY MX	<= 20 mg/L	all year
002	Nitrogen, inorganic total	DAILY MX	<= 20 mg/L	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Cyanide, total [as CN]	DAILY MX	<= 22 ug/L	all year
002	Sulfide, total [as S]	DAILY MX	<= 2 ug/L	all year
002	Fluoride, total [as F]	DAILY MX	<= 1000 ug/L	all year
002	Arsenic, total recoverable	DAILY MX	<= 100 ug/L	all year
002	Iron, total recoverable	DAILY MX	<= 1000 ug/L	all year
002	Beryllium, total recoverable [as Be]	DAILY MX	<= 100 ug/L	all year
002	Boron, total recoverable	DAILY MX	<= 750 ug/L	all year
002	Boron, total recoverable	DAILY MX	<= 750 ug/L	all year
002	Boron, total recoverable	DAILY MX	report only	all year
002	Cadmium, dissolved [as Cd]	DAILY MX	<= 7.6 ug/L	all year
002	Chromium, hexavalent [as Cr]	DAILY MX	<= 16 ug/L	all year
002	Chromium, trivalent [as Cr]	DAILY MX	<= 2023 ug/L	all year
002	Copper, dissolved [as Cu]	DAILY MX	<= 58 ug/L	all year
002	Lead, dissolved [as Pb]	DAILY MX	<= 321 ug/L	all year
002	Nickel, total recoverable	DAILY MX	<= 200 ug/L	all year
002	Silver total recoverable	DAILY MX	<= 46 ug/L	all year
002	Zinc, dissolved [as Zn]	DAILY MX	<= 435 ug/L	all year
002	Chromium, total recoverable	DAILY MX	<= 100 ug/L	all year
002	Molybdenum, total recoverable	DAILY MX	<= 6160 ug/L	all year
002	Selenium, dissolved [as Se]	DAILY MX	<= 6.3 ug/L	all year
002	Selenium, dissolved [as Se]	DAILY MX	<= 6.3 ug/L	all year
002	Selenium, dissolved [as Se]	DAILY MX	report only	all year
002	Tributyltin	DAILY MX	<= .46 ug/L	all year
002	Manganese, total recoverable	DAILY MX	<= 200 ug/L	all year
002	Dichlorobromomethane	DAILY MX	report only	all year
002	Carbon tetrachloride	DAILY MX	report only	all year
002	1,2-Dichloroethane	DAILY MX	report only	all year
002	Bromoform	DAILY MX	report only	all year
002	Dibromochloromethane	DAILY MX	report only	all year
002	Chloroform	DAILY MX	report only	all year
002	Chloroform	DAILY MX	report only	all year
002	Toluene	DAILY MX	report only	all year
002	Benzene	DAILY MX	report only	all year
002	Acrolein	DAILY MX	<= 3 ug/L	all year
002	Chlorobenzene	DAILY MX	report only	all year
002	.beta.-Endosulfan	DAILY MX	<= .22 ug/L	all year
002	.alpha.-Endosulfan	DAILY MX	<= .22 ug/L	all year
002	Ethylbenzene	DAILY MX	report only	all year
002	Methyl bromide [Bromomethane]	DAILY MX	report only	all year
002	Methyl chloride [Chloromethane]	DAILY MX	report only	all year
002	Methylene chloride	DAILY MX	report only	all year
002	Tetrachloroethylene	DAILY MX	report only	all year
002	Trichlorofluoromethane	DAILY MX	report only	all year
002	1,1-Dichloroethane	DAILY MX	report only	all year
002	1,1-Dichloroethylene	DAILY MX	report only	all year
002	1,1,1-Trichloroethane	DAILY MX	report only	all year
002	1,1,2-Trichloroethane	DAILY MX	report only	all year
002	1,1,2,2-Tetrachloroethane	DAILY MX	report only	all year
002	1,2-Dichlorobenzene	DAILY MX	report only	all year
002	1,2-Dichloropropane	DAILY MX	report only	all year
002	trans-1,2-Dichloroethylene	DAILY MX	report only	all year
002	1,3-Dichlorobenzene	DAILY MX	report only	all year
002	1,4-Dichlorobenzene	DAILY MX	report only	all year
002	2-Chloroethyl vinyl ether, [mixed]	DAILY MX	report only	all year
002	trans-1,3-Dichloropropene	DAILY MX	report only	all year
002	cis-1,3-Dichloropropene	DAILY MX	report only	all year
002	Chlorpyrifos	DAILY MX	<= .08 ug/L	all year
002	Pentachlorophenol	DAILY MX	report only	all year
002	Vinyl chloride	DAILY MX	report only	all year
002	Trichloroethylene	DAILY MX	report only	all year
002	4,4'-DDT	DAILY MX	<= 1.1 ug/L	all year
002	Aldrin	DAILY MX	<= 3 ug/L	all year
002	Chlordane [tech mix. and metabolites]	DAILY MX	<= 2.4 ug/L	all year
002	Dieldrin	DAILY MX	<= .24 ug/L	all year
002	Endrin	DAILY MX	<= .09 ug/L	all year
002	Toxaphene	DAILY MX	<= .73 ug/L	all year
002	Heptachlor	DAILY MX	<= .52 ug/L	all year
002	Heptachlor epoxide	DAILY MX	<= .52 ug/L	all year
002	Methoxychlor	DAILY MX	<= .03 ug/L	all year
002	Polychlorinated biphenyls [PCBs]	DAILY MX	<= .01 ug/L	all year
002	Malathion	DAILY MX	<= .1 ug/L	all year
002	Parathion	DAILY MX	<= .07 ug/L	all year
002	Demeton	DAILY MX	<= .1 ug/L	all year
002	Diazinon	DAILY MX	<= .17 ug/L	all year
002	Mirex	DAILY MX	<= .001 ug/L	all year
002	Lindane	DAILY MX	<= .95 ug/L	all year
002	Nonylphenol	DAILY MX	<= 28 ug/L	all year
002	pH, maximum	DAILY MX	<= 9 SU	all year
002	pH, minimum	DAILY MN	>= 6.5 SU	all year
002	pH, minimum	DAILY MN	>= 6.5 SU	all year
002	Solids, total dissolved	DAILY MX	report only	all year
002	Solids, total dissolved	DAILY MX	report only	all year
002	Mercury, dissolved [as Hg]	DAILY MX	<= 1.4 ug/L	all year
002	Hydrocarbons, total petroleum	DAILY MX	<= 1 mg/L	all year
002	Hydrocarbons, total petroleum	DAILY MX	<= 1 mg/L	all year
002	Azinphos-methyl	DAILY MX	<= .01 ug/L	all year
002	Chloroethane	DAILY MX	report only	all year
003	Flow rate	30DA AVG	report only	all year
003	Flow rate	30DA AVG	report only	all year
003	Flow rate	30DA AVG	report only	all year
003	Flow rate	30DA AVG	report only	all year
003	Flow rate	30DA AVG	report only	all year
003	Flow rate	30DA AVG	report only	all year
003	Flow rate	DAILY MX	report only	all year
003	Flow rate	DAILY MX	report only	all year
003	Flow rate	DAILY MX	<= .5 MGD	all year
003	Flow rate	DAILY MX	<= .5 MGD	all year
003	Flow rate	DAILY MX	<= .5 MGD	all year
003	Flow rate	DAILY MX	<= .5 MGD	all year
003	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
003	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
003	Nitrogen, inorganic total	DAILY MX	report only	all year
003	Phosphorous, total organic [as P]	DAILY MX	report only	all year
003	Phosphorous, total organic [as P]	DAILY MX	report only	all year
003	Cyanide, total [as CN]	DAILY MX	<= 22 ug/L	all year
003	Sulfide, total [as S]	DAILY MX	<= 2 ug/L	all year
003	Fluoride, total [as F]	DAILY MX	<= 1000 ug/L	all year
003	Arsenic, total recoverable	DAILY MX	<= 100 ug/L	all year
003	Iron, total recoverable	DAILY MX	<= 1000 ug/L	all year
003	Beryllium, total recoverable [as Be]	DAILY MX	<= 100 ug/L	all year
003	Boron, total recoverable	DAILY MX	report only	all year
003	Boron, total recoverable	DAILY MX	<= 750 ug/L	all year
003	Cadmium, dissolved [as Cd]	DAILY MX	<= 7.6 ug/L	all year
003	Chromium, hexavalent [as Cr]	DAILY MX	<= 16 ug/L	all year
003	Chromium, trivalent [as Cr]	DAILY MX	<= 2023 ug/L	all year
003	Copper, dissolved [as Cu]	DAILY MX	<= 58 ug/L	all year
003	Lead, dissolved [as Pb]	DAILY MX	<= 321 ug/L	all year
003	Nickel, total recoverable	DAILY MX	<= 200 ug/L	all year
003	Silver total recoverable	DAILY MX	<= 46 ug/L	all year
003	Zinc, dissolved [as Zn]	DAILY MX	<= 435 ug/L	all year
003	Chromium, total recoverable	DAILY MX	<= 100 ug/L	all year
003	Molybdenum, total recoverable	DAILY MX	<= 6160 ug/L	all year
003	Selenium, dissolved [as Se]	DAILY MX	report only	all year
003	Selenium, dissolved [as Se]	DAILY MX	<= 6.3 ug/L	all year
003	Tributyltin	DAILY MX	<= .46 ug/L	all year
003	Manganese, total recoverable	DAILY MX	<= 200 ug/L	all year
003	Dichlorobromomethane	DAILY MX	report only	all year
003	Carbon tetrachloride	DAILY MX	report only	all year
003	1,2-Dichloroethane	DAILY MX	report only	all year
003	Bromoform	DAILY MX	report only	all year
003	Dibromochloromethane	DAILY MX	report only	all year
003	Chloroform	DAILY MX	report only	all year
003	Chloroform	DAILY MX	report only	all year
003	Toluene	DAILY MX	report only	all year
003	Benzene	DAILY MX	report only	all year
003	Acrolein	DAILY MX	<= 3 ug/L	all year
003	Chlorobenzene	DAILY MX	report only	all year
003	.beta.-Endosulfan	DAILY MX	<= .22 ug/L	all year
003	.alpha.-Endosulfan	DAILY MX	<= .22 ug/L	all year
003	Ethylbenzene	DAILY MX	report only	all year
003	Methyl bromide [Bromomethane]	DAILY MX	report only	all year
003	Methyl chloride [Chloromethane]	DAILY MX	report only	all year
003	Methylene chloride	DAILY MX	report only	all year
003	Tetrachloroethylene	DAILY MX	report only	all year
003	Trichlorofluoromethane	DAILY MX	report only	all year
003	1,1-Dichloroethane	DAILY MX	report only	all year
003	1,1-Dichloroethylene	DAILY MX	report only	all year
003	1,1,1-Trichloroethane	DAILY MX	report only	all year
003	1,1,2-Trichloroethane	DAILY MX	report only	all year
003	1,1,2,2-Tetrachloroethane	DAILY MX	report only	all year
003	1,2-Dichlorobenzene	DAILY MX	report only	all year
003	1,2-Dichloropropane	DAILY MX	report only	all year
003	trans-1,2-Dichloroethylene	DAILY MX	report only	all year
003	1,3-Dichlorobenzene	DAILY MX	report only	all year
003	1,4-Dichlorobenzene	DAILY MX	report only	all year
003	2-Chloroethyl vinyl ether, [mixed]	DAILY MX	report only	all year
003	trans-1,3-Dichloropropene	DAILY MX	report only	all year
003	cis-1,3-Dichloropropene	DAILY MX	report only	all year
003	Chlorpyrifos	DAILY MX	<= .08 ug/L	all year
003	Pentachlorophenol	DAILY MX	report only	all year
003	Vinyl chloride	DAILY MX	report only	all year
003	Trichloroethylene	DAILY MX	report only	all year
003	4,4'-DDT	DAILY MX	<= 1.1 ug/L	all year
003	Aldrin	DAILY MX	<= 3 ug/L	all year
003	Chlordane [tech mix. and metabolites]	DAILY MX	<= 2.4 ug/L	all year
003	Dieldrin	DAILY MX	<= .24 ug/L	all year
003	Endrin	DAILY MX	<= .09 ug/L	all year
003	Toxaphene	DAILY MX	<= .73 ug/L	all year
003	Heptachlor	DAILY MX	<= .52 ug/L	all year
003	Heptachlor epoxide	DAILY MX	<= .52 ug/L	all year
003	Methoxychlor	DAILY MX	<= .03 ug/L	all year
003	Polychlorinated biphenyls [PCBs]	DAILY MX	<= .01 ug/L	all year
003	Malathion	DAILY MX	<= .1 ug/L	all year
003	Parathion	DAILY MX	<= .07 ug/L	all year
003	Demeton	DAILY MX	<= .1 ug/L	all year
003	Diazinon	DAILY MX	<= .17 ug/L	all year
003	Mirex	DAILY MX	<= .001 ug/L	all year
003	Lindane	DAILY MX	<= .95 ug/L	all year
003	Nonylphenol	DAILY MX	<= 28 ug/L	all year
003	pH, maximum	DAILY MX	<= 9 SU	all year
003	pH, minimum	DAILY MN	>= 6.5 SU	all year
003	Solids, total dissolved	DAILY MX	<= 1900 mg/L	all year
003	Mercury, dissolved [as Hg]	DAILY MX	<= 1.4 ug/L	all year
003	Hydrocarbons, total petroleum	DAILY MX	<= 1 mg/L	all year
003	Azinphos-methyl	DAILY MX	<= .01 ug/L	all year
003	Chloroethane	DAILY MX	report only	all year
SUM	Flow rate	30DA AVG	report only	all year
SUM	Flow rate	30DA AVG	report only	all year
SUM	Flow rate	DAILY MX	<= .5 MGD	all year
SUM	Flow rate	DAILY MX	<= .5 MGD	all year