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Clean Water Act discharge permit · NPDES HI0021893

MARISCO LTD., Kapolei, HI: NPDES HI0021893 discharge permit, effluent exceedances, inspections, penalties

MARISCO LTD., held by Marisco Ltd., holds NPDES permit HI0021893. EPA’s file records it issued November 1, 2016 and expiring November 30, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedMARISCO LTD.
Permittee as filedMarisco Ltd.
NPDES IDHI0021893
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedNovember 1, 2016
Expiration dateNovember 30, 2021
Issuing agencyHawaii Dept of Health, Clean Water Branch
AddressKapolei, HI 96707
SubwatershedWaimanalo Gulch (HUC 200600000501)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant; the 60 with the most exceedances of 150 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Copper, total recoverable63130March 31, 202139,900% over the limit
Zinc, total recoverable62423March 31, 2021880% over the limit
Nitrogen, total [as N]676March 31, 2021380% over the limit
Nitrite + Nitrate total [as N]676March 31, 20211,671% over the limit
Phosphorus, total [as P]654March 31, 2021618% over the limit
pH1883June 30, 2019
Copper, total recoverable54461December 31, 202333% over the limit
Arsenic, total recoverable54480
Zinc, total recoverable54450
Lead, total recoverable54450
Tributyltin, total recoverable54450
Mercury, total recoverable54450
Chromium, hexavalent tot recoverable54450
Cyanide, total [as CN]660
Selenium, total recoverable660
Thallium, total recoverable660
Nickel, total recoverable660
Cadmium, total recoverable660
Antimony, total recoverable660
Beryllium, total recoverable [as Be]650
Silver total recoverable650
Solids, total suspended920
Oil and grease920
Flow, in conduit or thru treatment plant920
BOD, 5-day, 20 deg. C610
Arsenic, total recoverable610
Lead, total recoverable610
Chromium, total recoverable610
Tributyltin, Total Recoverable610
Mercury, total recoverable610
Chemical Oxygen Demand [COD]610
Temperature, water deg. centigrade310
Oxidants, total residual310
2-Methyl-4,6-dinitrophenol600
Dichlorobromomethane600
Carbon tetrachloride600
1,2-Dichloroethane600
Bromoform600
Dibromochloromethane600
Chloroform600
Toluene600
Benzene600
.delta.-BHC600
Acenaphthylene600
Acenaphthene600
Acrolein600
Acrylonitrile600
Anthracene600
Benzo[b]fluoranthene600
Benzo[k]fluoranthene600
Benzo[a]pyrene600
Bis[2-chloroethyl] ether600
Bis[2-chloroethoxy]methane600
Bis[2-chloroisopropyl] ether600
Butyl benzyl phthalate600
Chlorobenzene600
Chrysene600
Diethyl phthalate600
Dimethyl phthalate600
1,2-Diphenylhydrazine600

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES HI0021893.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

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How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID HI0021893 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.