Ameron HC&D, Ltd.

NPDES permit HI0020796 · Minor NON-POTW · effective, expires 2026-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

0values over a limit
168required values missing, on 2 form(s)
2of 2 forms filed late

Last period with anything received: 2025-12-31.

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 (196)

OutfallParameterStatisticLimitMonths
002TurbidityMAXIMUM <= 25 NTU Jan, Feb, Mar, Apr, Nov, Dec
002TurbidityMAXIMUM <= 10 NTU May, Jun, Jul, Aug, Sep, Oct
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 8 SU all year
002Solids, total suspendedMAXIMUM <= 91 kg/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
002Solids, total suspendedMAXIMUM <= 62 kg/d May, Jun, Jul, Aug, Sep, Oct, Nov
002Oil & GreaseMAXIMUM <= 15 mg/L all year
002Nitrogen, total [as N]MAXIMUM <= .3 kg/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, total [as N]MAXIMUM <= .2 kg/d May, Jun, Jul, Aug, Sep, Oct
002Phosphorus, total [as P]MAXIMUM <= .1 kg/d all year
002Cyanide, total [as CN]DAILY MX report only all year
002Arsenic, total recoverableDAILY MX report only all year
002Iron, total recoverableMAXIMUM report only all year
002Selenium, total recoverableDAILY MX report only all year
002Thallium, total recoverableDAILY MX report only all year
002Beryllium, total recoverable [as Be]DAILY MX report only all year
002Chromium, hexavalent [as Cr]MAXIMUM <= 11 ug/L all year
002Chromium, hexavalent [as Cr]DAILY MX report only all year
002Nickel, total recoverableDAILY MX report only all year
002Silver total recoverableDAILY MX report only all year
002Zinc, total recoverableDAILY MX report only all year
002Aluminum, total recoverableDAILY MX report only all year
002Cadmium, total recoverableDAILY MX report only all year
002Lead, total recoverableDAILY MX report only all year
002Copper, total recoverableDAILY MX report only all year
002Antimony, total recoverableDAILY MX report only all year
002DioxinMAXIMUM <= .000005 ng/L all year
0022-Methyl-4,6-dinitrophenolDAILY MX report only all year
002TributyltinDAILY MX report only all year
002Carbon tetrachlorideDAILY MX report only all year
002ChloroformDAILY MX report only all year
002TolueneDAILY MX report only all year
002BenzeneDAILY MX report only all year
002AcenaphtheneDAILY MX report only all year
002AcroleinDAILY MX report only all year
002AcrylonitrileDAILY MX report only all year
002Bis[2-chloroethyl] etherDAILY MX report only all year
002Bis[2-chloro-1-methylethyl] etherDAILY MX report only all year
002Diethyl phthalateDAILY MX report only all year
002Dimethyl phthalateDAILY MX report only all year
0021,2-DiphenylhydrazineDAILY MX report only all year
002EthylbenzeneDAILY MX report only all year
002FluorantheneDAILY MX report only all year
002HexachlorocyclopentadieneDAILY MX report only all year
002HexachlorobutadieneDAILY MX report only all year
002HexachloroethaneDAILY MX report only all year
002IsophoroneDAILY MX report only all year
002N-NitrosodiphenylamineDAILY MX report only all year
002N-Nitrosodimethylamine [NDMA]DAILY MX report only all year
002NitrobenzeneDAILY MX report only all year
0021,1,1-TrichloroethaneDAILY MX report only all year
0021,1,2-TrichloroethaneDAILY MX report only all year
0021,1,2,2-TetrachloroethaneDAILY MX report only all year
0022-ChlorophenolDAILY MX report only all year
0022,4-DichlorophenolDAILY MX report only all year
0022,4-DimethylphenolDAILY MX report only all year
0022,4,6-TrichlorophenolDAILY MX report only all year
0023,3'-DichlorobenzidineDAILY MX report only all year
0022,3,7,8-Tetrachlorodibenzo-p-dioxinDAILY MX report only all year
002PhenolDAILY MX report only all year
002NaphthaleneDAILY MX report only all year
002ChlorpyrifosDAILY MX report only all year
002PentachlorophenolDAILY MX report only all year
002Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
002Di-n-butyl phthalateDAILY MX report only all year
002BenzidineDAILY MX report only all year
002Vinyl chlorideDAILY MX report only all year
002TrichloroethyleneDAILY MX report only all year
0024,4'-DDTDAILY MX report only all year
0024,4'-DDDDAILY MX report only all year
002AldrinDAILY MX report only all year
002.alpha.-BHCDAILY MX report only all year
002.beta.-BHCDAILY MX report only all year
002.gamma.-BHCDAILY MX report only all year
002Chlordane [tech mix. and metabolites]DAILY MX report only all year
002DieldrinDAILY MX report only all year
002EndrinDAILY MX report only all year
002ToxapheneDAILY MX report only all year
002HeptachlorDAILY MX report only all year
002MethoxychlorDAILY MX report only all year
002MalathionDAILY MX report only all year
002ParathionDAILY MX report only all year
002DemetonDAILY MX report only all year
002GuthionDAILY MX report only all year
002HexachlorobenzeneDAILY MX report only all year
002MirexDAILY MX report only all year
002Flow, in conduit or thru treatment plantMAXIMUM report only all year
002Chlorine, total residualDAILY MX report only all year
002Mercury, total recoverableDAILY MX report only all year
0021,3-DichloropropeneDAILY MX report only all year
0021,2,4,5-TetrachlorobenzeneDAILY MX report only all year
002PentachlorobenzeneDAILY MX report only all year
002N-NitrosodiethylamineDAILY MX report only all year
002N-NitrosopyrrolidineDAILY MX report only all year
002N-NitrosodibutylamineDAILY MX report only all year
002TetrachloroetheneDAILY MX report only all year
002PentachloroethaneDAILY MX report only all year
002DichloroethaneDAILY MX report only all year
003TurbidityMAXIMUM <= 25 NTU Jan, Feb, Mar, Apr, Nov, Dec
003TurbidityMAXIMUM <= 10 NTU May, Jun, Jul, Aug, Sep, Oct
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 8 SU all year
003Solids, total suspendedMAXIMUM <= 91 kg/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
003Solids, total suspendedMAXIMUM <= 62 kg/d May, Jun, Jul, Aug, Sep, Oct, Nov
003Oil & GreaseMAXIMUM <= 15 mg/L all year
003Nitrogen, total [as N]MAXIMUM <= .3 kg/d Jan, Feb, Mar, Apr, Nov, Dec
003Nitrogen, total [as N]MAXIMUM <= .2 kg/d May, Jun, Jul, Aug, Sep, Oct
003Phosphorus, total [as P]MAXIMUM <= .1 kg/d all year
003Cyanide, total [as CN]DAILY MX report only all year
003Arsenic, total recoverableDAILY MX report only all year
003Iron, total recoverableMAXIMUM report only all year
003Selenium, total recoverableDAILY MX report only all year
003Thallium, total recoverableDAILY MX report only all year
003Beryllium, total recoverable [as Be]DAILY MX report only all year
003Chromium, hexavalent [as Cr]MAXIMUM <= 11 ug/L all year
003Chromium, hexavalent [as Cr]DAILY MX report only all year
003Nickel, total recoverableDAILY MX report only all year
003Silver total recoverableDAILY MX report only all year
003Zinc, total recoverableDAILY MX report only all year
003Aluminum, total recoverableDAILY MX report only all year
003Cadmium, total recoverableDAILY MX report only all year
003Lead, total recoverableDAILY MX report only all year
003Copper, total recoverableDAILY MX report only all year
003Antimony, total recoverableDAILY MX report only all year
003DioxinMAXIMUM <= .000005 ng/L all year
0032-Methyl-4,6-dinitrophenolDAILY MX report only all year
003TributyltinDAILY MX report only all year
003Carbon tetrachlorideDAILY MX report only all year
003ChloroformDAILY MX report only all year
003TolueneDAILY MX report only all year
003BenzeneDAILY MX report only all year
003AcenaphtheneDAILY MX report only all year
003AcroleinDAILY MX report only all year
003AcrylonitrileDAILY MX report only all year
003Bis[2-chloroethyl] etherDAILY MX report only all year
003Bis[2-chloro-1-methylethyl] etherDAILY MX report only all year
003Diethyl phthalateDAILY MX report only all year
003Dimethyl phthalateDAILY MX report only all year
0031,2-DiphenylhydrazineDAILY MX report only all year
003EthylbenzeneDAILY MX report only all year
003FluorantheneDAILY MX report only all year
003HexachlorocyclopentadieneDAILY MX report only all year
003HexachlorobutadieneDAILY MX report only all year
003HexachloroethaneDAILY MX report only all year
003IsophoroneDAILY MX report only all year
003N-NitrosodiphenylamineDAILY MX report only all year
003N-Nitrosodimethylamine [NDMA]DAILY MX report only all year
003NitrobenzeneDAILY MX report only all year
0031,1,1-TrichloroethaneDAILY MX report only all year
0031,1,2-TrichloroethaneDAILY MX report only all year
0031,1,2,2-TetrachloroethaneDAILY MX report only all year
0032-ChlorophenolDAILY MX report only all year
0032,4-DichlorophenolDAILY MX report only all year
0032,4-DimethylphenolDAILY MX report only all year
0032,4,6-TrichlorophenolDAILY MX report only all year
0033,3'-DichlorobenzidineDAILY MX report only all year
0032,3,7,8-Tetrachlorodibenzo-p-dioxinDAILY MX report only all year
003PhenolDAILY MX report only all year
003NaphthaleneDAILY MX report only all year
003ChlorpyrifosDAILY MX report only all year
003PentachlorophenolDAILY MX report only all year
003Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
003Di-n-butyl phthalateDAILY MX report only all year
003BenzidineDAILY MX report only all year
003Vinyl chlorideDAILY MX report only all year
003TrichloroethyleneDAILY MX report only all year
0034,4'-DDTDAILY MX report only all year
0034,4'-DDDDAILY MX report only all year
003AldrinDAILY MX report only all year
003.alpha.-BHCDAILY MX report only all year
003.beta.-BHCDAILY MX report only all year
003.gamma.-BHCDAILY MX report only all year
003Chlordane [tech mix. and metabolites]DAILY MX report only all year
003DieldrinDAILY MX report only all year
003EndrinDAILY MX report only all year
003ToxapheneDAILY MX report only all year
003HeptachlorDAILY MX report only all year
003MethoxychlorDAILY MX report only all year
003MalathionDAILY MX report only all year
003ParathionDAILY MX report only all year
003DemetonDAILY MX report only all year
003GuthionDAILY MX report only all year
003HexachlorobenzeneDAILY MX report only all year
003MirexDAILY MX report only all year
003Flow, in conduit or thru treatment plantMAXIMUM report only all year
003Chlorine, total residualDAILY MX report only all year
003Mercury, total recoverableDAILY MX report only all year
0031,3-DichloropropeneDAILY MX report only all year
0031,2,4,5-TetrachlorobenzeneDAILY MX report only all year
003PentachlorobenzeneDAILY MX report only all year
003N-NitrosodiethylamineDAILY MX report only all year
003N-NitrosopyrrolidineDAILY MX report only all year
003N-NitrosodibutylamineDAILY MX report only all year
003TetrachloroetheneDAILY MX report only all year
003PentachloroethaneDAILY MX report only all year
003DichloroethaneDAILY MX report only all year

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