Nevada Gold Mines Turquoise Ridge — NPDES permit NV0021725: limits, due date and EPA's record

Gold Ores, major discharger, Golconda, Nevada. NPDES permit NV0021725, in force until Apr 30, 2031. Last 12 months: no values over a limit, 72 required values missing, 28 of 49 reports late. Source: EPA ECHO, Oct 22, 2026.

Limits in force (192)

Parameter	Statistic	Limit	Months	Outfall
Flow rate	30-day average	report only (MGD)	all year	001
Flow rate	30-day average	report only (MGD)	all year	001
Flow rate	daily maximum	report only (MGD)	all year	001
Flow rate	daily maximum	report only (MGD)	all year	001
Flow rate	30-day average	report only (MGD)	all year	002
Flow rate	30-day average	report only (MGD)	all year	002
Flow rate	daily maximum	report only (MGD)	all year	002
Flow rate	daily maximum	report only (MGD)	all year	002
Flow rate	30-day average	report only (MGD)	all year	003
Flow rate	30-day average	report only (MGD)	all year	003
Flow rate	daily maximum	report only (MGD)	all year	003
Flow rate	daily maximum	report only (MGD)	all year	003
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year	01D
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year	01D
Turbidity	daily maximum	≤ 50 NTU	all year	01D
Turbidity	daily maximum	≤ 50 NTU	all year	01D
Color, apparent [unfiltered sample]	30-day average	≤ 75 col unit (pc)	all year	01D
Color, apparent [unfiltered sample]	30-day average	≤ 75 col unit (pc)	all year	01D
Color, apparent [unfiltered sample]	daily maximum	≤ 75 col unit (pc)	all year	01D
Color, apparent [unfiltered sample]	daily maximum	≤ 75 col unit (pc)	all year	01D
Solids, total suspended	30-day average	≤ 20 mg/L	all year	01D
Solids, total suspended	30-day average	≤ 20 mg/L	all year	01D
Solids, total suspended	daily maximum	≤ 30 mg/L	all year	01D
Solids, total suspended	daily maximum	≤ 30 mg/L	all year	01D
Solids, total suspended	30-day average	≤ 3315 lb/d	all year	01D
Solids, total suspended	30-day average	≤ 3315 lb/d	all year	01D
Solids, total suspended	daily maximum	≤ 4972 lb/d	all year	01D
Solids, total suspended	daily maximum	≤ 4972 lb/d	all year	01D
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	01D
Nitrogen, nitrite total [as N]	30-day average	≤ 1 mg/L	all year	01D
Nitrogen, nitrite total [as N]	30-day average	≤ 1 mg/L	all year	01D
Nitrogen, nitrite total [as N]	daily maximum	≤ 1 mg/L	all year	01D
Nitrogen, nitrite total [as N]	daily maximum	≤ 1 mg/L	all year	01D
Nitrogen, nitrate total [as N]	30-day average	≤ 10 mg/L	all year	01D
Nitrogen, nitrate total [as N]	30-day average	≤ 10 mg/L	all year	01D
Nitrogen, nitrate total [as N]	daily maximum	≤ 10 mg/L	all year	01D
Nitrogen, nitrate total [as N]	daily maximum	≤ 10 mg/L	all year	01D
Phosphorus, total [as P]	average	≤ .1 mg/L	all year	01D
Phosphorus, total [as P]	average	≤ .1 mg/L	all year	01D
Phosphorus, total [as P]	average	≤ 17 lb/d	all year	01D
Phosphorus, total [as P]	average	≤ 17 lb/d	all year	01D
Sulfide, total [as S]	daily maximum	report only (ug/L)	all year	01D
Sodium adsorption ratio	annual average	≤ 8 Ratio	all year	01D
Sodium adsorption ratio	daily maximum	report only (Ratio)	all year	01D
Sodium adsorption ratio	daily maximum	report only (Ratio)	all year	01D
Chloride [as Cl]	30-day average	≤ 110 mg/L	all year	01D
Chloride [as Cl]	30-day average	≤ 110 mg/L	all year	01D
Chloride [as Cl]	daily maximum	≤ 110 mg/L	all year	01D
Chloride [as Cl]	daily maximum	≤ 110 mg/L	all year	01D
Sulfate, total [as SO4]	daily maximum	report only (mg/L)	all year	01D
Asbestos	daily maximum	report only (Fib/L)	all year	01D
Fluoride, total [as F]	daily maximum	report only (ug/L)	all year	01D
Iron, total recoverable	daily maximum	≤ 1000 ug/L	all year	01D
Iron, total recoverable	daily maximum	≤ 1000 ug/L	all year	01D
Iron, total recoverable	daily maximum	≤ 166 lb/d	all year	01D
Iron, total recoverable	daily maximum	≤ 166 lb/d	all year	01D
Thallium, total recoverable	daily maximum	report only (ug/L)	all year	01D
Beryllium, total recoverable [as Be]	daily maximum	report only (ug/L)	all year	01D
Arsenic, total [as As]	daily maximum	report only (ug/L)	all year	01D
Arsenic, total [as As]	daily maximum	report only (ug/L)	all year	01D
Barium, total recoverable	daily maximum	report only (ug/L)	all year	01D
Boron, total [as B]	daily maximum	≤ 750 ug/L	all year	01D
Boron, total [as B]	daily maximum	≤ 124 lb/d	all year	01D
Cadmium, total [as Cd]	daily maximum	report only (ug/L)	all year	01D
Chromium, hexavalent [as Cr]	daily maximum	report only (ug/L)	all year	01D
Chromium, trivalent [as Cr]	daily maximum	report only (ug/L)	all year	01D
Copper, dissolved [as Cu]	daily maximum	≤ 11 ug/L	all year	01D
Lead, dissolved [as Pb]	daily maximum	≤ 3 ug/L	all year	01D
Nickel, total recoverable	daily maximum	report only (ug/L)	all year	01D
Silver, dissolved [as Ag]	daily maximum	report only (ug/L)	all year	01D
Zinc, dissolved [as Zn]	daily maximum	≤ 140 ug/L	all year	01D
Chromium, total recoverable	daily maximum	report only (ug/L)	all year	01D
Molybdenum, total recoverable	daily maximum	report only (ug/L)	all year	01D
Selenium, dissolved [as Se]	daily maximum	report only (ug/L)	all year	01D
Antimony, total recoverable	daily maximum	report only (ug/L)	all year	01D
2-Methyl-4,6-dinitrophenol	daily maximum	report only (ug/L)	all year	01D
Tributyltin	daily maximum	report only (ug/L)	all year	01D
Manganese, total recoverable	daily maximum	report only (ug/L)	all year	01D
Dichlorobromomethane	daily maximum	report only (ug/L)	all year	01D
Carbon tetrachloride	daily maximum	report only (ug/L)	all year	01D
1,2-Dichloroethane	daily maximum	report only (ug/L)	all year	01D
Bromoform	daily maximum	report only (ug/L)	all year	01D
Dibromochloromethane	daily maximum	report only (ug/L)	all year	01D
Chloroform	daily maximum	report only (ug/L)	all year	01D
Toluene	daily maximum	report only (ug/L)	all year	01D
Benzene	daily maximum	report only (ug/L)	all year	01D
Acrolein	daily maximum	report only (ug/L)	all year	01D
Acrylonitrile	daily maximum	report only (ug/L)	all year	01D
Anthracene	daily maximum	report only (ug/L)	all year	01D
Benzo[b]fluoranthene	daily maximum	report only (ug/L)	all year	01D
Benzo[k]fluoranthene	daily maximum	report only (ug/L)	all year	01D
Benzo[a]pyrene	daily maximum	report only (ug/L)	all year	01D
Bis[2-chloroethyl] ether	daily maximum	report only (ug/L)	all year	01D
Bis[2-chloroisopropyl] ether	daily maximum	report only (ug/L)	all year	01D
Chlorobenzene	daily maximum	report only (ug/L)	all year	01D
Chrysene	daily maximum	report only (ug/L)	all year	01D
Diethyl phthalate	daily maximum	report only (ug/L)	all year	01D
Dimethyl phthalate	daily maximum	report only (ug/L)	all year	01D
1,2-Diphenylhydrazine	daily maximum	report only (ug/L)	all year	01D
Endosulfan sulfate	daily maximum	report only (ug/L)	all year	01D
.beta.-Endosulfan	daily maximum	report only (ug/L)	all year	01D
.alpha.-Endosulfan	daily maximum	report only (ug/L)	all year	01D
Endrin aldehyde	daily maximum	report only (ug/L)	all year	01D
Ethylbenzene	daily maximum	report only (ug/L)	all year	01D
Fluoranthene	daily maximum	report only (ug/L)	all year	01D
Fluorene	daily maximum	report only (ug/L)	all year	01D
Hexachlorocyclopentadiene	daily maximum	report only (ug/L)	all year	01D
Hexachlorobutadiene	daily maximum	report only (ug/L)	all year	01D
Hexachloroethane	daily maximum	report only (ug/L)	all year	01D
Indeno[1,2,3-cd]pyrene	daily maximum	report only (ug/L)	all year	01D
Isophorone	daily maximum	report only (ug/L)	all year	01D
Methyl bromide [Bromomethane]	daily maximum	report only (ug/L)	all year	01D
Methyl chloride [Chloromethane]	daily maximum	report only (ug/L)	all year	01D
Methylene chloride	daily maximum	report only (ug/L)	all year	01D
N-Nitrosodiphenylamine	daily maximum	report only (ug/L)	all year	01D
N-Nitrosodimethylamine [NDMA]	daily maximum	report only (ug/L)	all year	01D
Nitrobenzene	daily maximum	report only (ug/L)	all year	01D
Pyrene	daily maximum	report only (ug/L)	all year	01D
Tetrachloroethylene	daily maximum	report only (ug/L)	all year	01D
1,1-Dichloroethylene	daily maximum	report only (ug/L)	all year	01D
1,1,1-Trichloroethane	daily maximum	report only (ug/L)	all year	01D
1,1,2-Trichloroethane	daily maximum	report only (ug/L)	all year	01D
Benzo[a]anthracene	daily maximum	report only (ug/L)	all year	01D
1,2-Dichlorobenzene	daily maximum	report only (ug/L)	all year	01D
Dibenz[a,h]anthracene	daily maximum	report only (ug/L)	all year	01D
1,3-Dichlorobenzene	daily maximum	report only (ug/L)	all year	01D
1,4-Dichlorobenzene	daily maximum	report only (ug/L)	all year	01D
2,4-Dinitrotoluene	daily maximum	report only (ug/L)	all year	01D
2,4-Dinitrophenol	daily maximum	report only (ug/L)	all year	01D
2,4,6-Trichlorophenol	daily maximum	report only (ug/L)	all year	01D
3,3'-Dichlorobenzidine	daily maximum	report only (ug/L)	all year	01D
2,3,7,8-Tetrachlorodibenzo-p-dioxin	daily maximum	report only (ug/L)	all year	01D
Phenol	daily maximum	report only (ug/L)	all year	01D
Chlorpyrifos	daily maximum	report only (ug/L)	all year	01D
Pentachlorophenol	daily maximum	report only (ug/L)	all year	01D
2,4,5-TP[silvex] acids/salts, whole water sample	daily maximum	report only (ug/L)	all year	01D
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	report only (ug/L)	all year	01D
Di-n-butyl phthalate	daily maximum	report only (ug/L)	all year	01D
Benzidine	daily maximum	report only (ug/L)	all year	01D
Vinyl chloride	daily maximum	report only (ug/L)	all year	01D
Trichloroethylene	daily maximum	report only (ug/L)	all year	01D
4,4'-DDT	daily maximum	report only (ug/L)	all year	01D
4,4'-DDD	daily maximum	report only (ug/L)	all year	01D
Aldrin	daily maximum	report only (ug/L)	all year	01D
.alpha.-BHC	daily maximum	report only (ug/L)	all year	01D
.beta.-BHC	daily maximum	report only (ug/L)	all year	01D
.gamma.-BHC	daily maximum	report only (ug/L)	all year	01D
Chlordane [tech mix. and metabolites]	daily maximum	report only (ug/L)	all year	01D
Dieldrin	daily maximum	report only (ug/L)	all year	01D
Endosulfan, total	daily maximum	report only (ug/L)	all year	01D
Endrin	daily maximum	report only (ug/L)	all year	01D
Toxaphene	daily maximum	report only (ug/L)	all year	01D
Heptachlor	daily maximum	report only (ug/L)	all year	01D
Heptachlor epoxide	daily maximum	report only (ug/L)	all year	01D
Methoxychlor	daily maximum	report only (ug/L)	all year	01D
Polychlorinated biphenyls [PCBs]	daily maximum	report only (ug/L)	all year	01D
Malathion	daily maximum	report only (ug/L)	all year	01D
Parathion	daily maximum	report only (ug/L)	all year	01D
Demeton	daily maximum	report only (ug/L)	all year	01D
Diazinon	daily maximum	report only (ug/L)	all year	01D
Hexachlorobenzene	daily maximum	report only (ug/L)	all year	01D
Mirex	daily maximum	report only (ug/L)	all year	01D
Lindane	daily maximum	report only (ug/L)	all year	01D
Dibutyl phthalate	daily maximum	report only (ug/L)	all year	01D
2,4-D SALTS AND ESTERS	daily maximum	report only (ug/L)	all year	01D
Cyanide, free available	daily maximum	report only (ug/L)	all year	01D
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	report only (ug/L)	all year	01D
Nonylphenol	daily maximum	report only (ug/L)	all year	01D
pH, maximum	daily maximum	≤ 8.7 SU	all year	01D
pH, maximum	daily maximum	≤ 8.7 SU	all year	01D
pH, minimum	daily minimum	≥ 7 SU	all year	01D
pH, minimum	daily minimum	≥ 7 SU	all year	01D
Solids, total dissolved	30-day average	≤ 500 mg/L	all year	01D
Solids, total dissolved	30-day average	≤ 500 mg/L	all year	01D
Solids, total dissolved	daily maximum	≤ 560 mg/L	all year	01D
Solids, total dissolved	daily maximum	≤ 560 mg/L	all year	01D
Solids, total dissolved	30-day average	≤ 82866 lb/d	all year	01D
Solids, total dissolved	30-day average	≤ 82866 lb/d	all year	01D
Solids, total dissolved	daily maximum	≤ 92810 lb/d	all year	01D
Solids, total dissolved	daily maximum	≤ 92810 lb/d	all year	01D
Nitrogen, ammonia total [as NH4]	30-day average	report only (mg/L)	all year	01D
Nitrogen, ammonia total [as NH4]	30-day average	report only (mg/L)	all year	01D
Nitrogen, ammonia total [as NH4]	daily maximum	report only (mg/L)	all year	01D
Nitrogen, ammonia total [as NH4]	daily maximum	report only (mg/L)	all year	01D
Mercury, dissolved [as Hg]	30-day average	≤ .77 ug/L	all year	01D
Mercury, dissolved [as Hg]	daily maximum	≤ 1.4 ug/L	all year	01D
Trihalomethane, tot.	daily maximum	report only (ug/L)	all year	01D
Azinphos-methyl	daily maximum	report only (ug/L)	all year	01D
Flow rate	30-day average	≤ 19.872 MGD	all year	SUM
Flow rate	30-day average	≤ 19.872 MGD	all year	SUM
Flow rate	daily maximum	≤ 19.872 MGD	all year	SUM
Flow rate	daily maximum	≤ 19.872 MGD	all year	SUM

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/NV0021725 · MCP: https://passage-data.com/mcp