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Clean Water Act discharge permit · NPDES AR0037800

CLEAN HARBORS EL DORADO, LLC, El Dorado, AR: NPDES AR0037800 discharge permit, effluent exceedances, inspections, penalties

CLEAN HARBORS EL DORADO, LLC holds NPDES permit AR0037800, which discharges to Boggy Cr,Bu De Loutre,Ouachita Rb. EPA’s file records it issued August 17, 2016 and expiring September 30, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedCLEAN HARBORS EL DORADO, LLC
Permittee as filedCLEAN HARBORS EL DORADO, LLC
NPDES IDAR0037800
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedAugust 17, 2016
Expiration dateSeptember 30, 2021
AddressEl Dorado, AR 71730
Receiving waterBOGGY CR,BU DE LOUTRE,OUACHITA RB
SubwatershedBoggy Creek (HUC 080402020501)
NAICS562211 – Hazardous Waste Treatment and Disposal
SIC4953 – Refuse Systems
Other EPA IDs (FRS)RCRA handler ARD069748192; ICIS-AIR source AR0000000513900098

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

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.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Whole effluent toxicity123128June 30, 202399,999% over the limit
Mercury, total recoverable22624July 31, 20235,100% over the limit
Lead, total recoverable62220March 31, 20231,700% over the limit
Solids, total dissolved41713April 30, 2025211% over the limit
Lead, total [as Pb]0179June 30, 2003150% over the limit
Chloride [as Cl]4139March 31, 2025296% over the limit
Whole Effluent Toxicity [WET] - C. dubia099June 30, 2026100% over the limit
Whole Effluent Toxicity [WET] - P. promelas099June 30, 2026100% over the limit
1,2-Dichloroethane4117September 30, 2016321% over the limit
Cadmium, total recoverable297March 31, 20234,329% over the limit
Oil & Grease4146May 31, 2025202% over the limit
Discharge flow as % of stream flow176June 30, 20131,514% over the limit
Copper, total recoverable055March 31, 2004162% over the limit
pH684July 31, 2022
Sulfate, total [as SO4]464March 31, 20231,152% over the limit
Zinc, total recoverable473February 28, 200384% over the limit
Selenium, total recoverable262December 31, 2007154% over the limit
Carbon, tot organic [TOC]352January 31, 20045,173% over the limit
Dieldrin0100
Endrin0100
Flow, in conduit or thru treatment plant660
Streamflow160
Dichloromethane440
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex240
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas240
Chromium, total [as Cr]040
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex230
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas230
Coef Of Var Static Renewal 48Hr Acute D. pulex230
Coef Of Var Static Renewal 48Hr Acute Pimephales promelas230
Di[2-ethylhexyl] phthalate [DEHP]020
Temperature, water deg. fahrenheit110
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia110
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas110
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia110
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas110
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia110
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas110
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia110
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas110
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia110
Coef Of Var Static Renewal 7Day Chronic Pimephales promelas110
Total phenols400
Arsenic, total recoverable200
Chloroform200
Vinyl chloride200
Xylenes [total], dry weight200

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 AR0037800.

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.

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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 AR0037800 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit AR0037800 held by CLEAN HARBORS EL DORADO, LLC in El Dorado, AR, which is administratively continued and classed as a Major Discharger. The facts list 39 as the discharger class figure, 18 pollutants under a numeric limit, and 18 pollutants with an effluent exceedance.