Clean Water Act discharge permit · NPDES AR0000752
EL DORADO CHEMICAL CO., INC., El Dorado, AR: NPDES AR0000752 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 43Pollutants under a numeric limit
- 19Pollutants with an effluent exceedance
EL DORADO CHEMICAL CO., INC., held by EL DORADO CHEMICAL CO, INC, holds NPDES permit AR0000752, which discharges to Trib,Flat Cr,Haynes Cr,Ouachita R. EPA’s file records it issued May 31, 2002 and expiring June 30, 2007. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | EL DORADO CHEMICAL CO., INC. |
|---|---|
| Permittee as filed | EL DORADO CHEMICAL CO, INC |
| NPDES ID | AR0000752 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 31, 2002 |
| Expiration date | June 30, 2007 |
| Address | El Dorado, AR 71730 |
| Receiving water | Trib,Flat Cr,Haynes Cr,Ouachita R |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Haynes Creek (HUC 080402010407) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 46Pollutants on file
- 43Under a numeric limit
- 45With a violation of any kind
- 19With an effluent exceedance
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 measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total dissolved | 34 | 385 | 335 | October 31, 2025 | 1,446% over the limit |
| Zinc, total recoverable | 26 | 310 | 264 | July 31, 2026 | 1,085% over the limit |
| Lead, total recoverable | 18 | 265 | 227 | July 31, 2024 | 5,084% over the limit |
| Nitrogen, ammonia total [as N] | 76 | 278 | 209 | July 31, 2026 | 3,817% over the limit |
| Nitrogen, nitrate total [as N] | 34 | 141 | 125 | July 31, 2026 | 3,160% over the limit |
| pH | 26 | 95 | 52 | September 30, 2025 | |
| Whole Effluent Toxicity [WET] - C. dubia | 0 | 28 | 28 | October 31, 2025 | 99,999% over the limit |
| Whole Effluent Toxicity [WET] - P. promelas | 0 | 28 | 28 | October 31, 2025 | 99,999% over the limit |
| Copper, total recoverable | 14 | 35 | 23 | April 30, 2025 | 153% over the limit |
| Solids, total suspended | 48 | 71 | 21 | June 30, 2025 | 654% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 16 | 31 | 21 | July 31, 2026 | 2,334% over the limit |
| Chloride [as Cl] | 14 | 26 | 20 | October 31, 2025 | 87% over the limit |
| Coliform, fecal general | 6 | 17 | 11 | June 30, 2026 | 99,999% over the limit |
| Temperature, water deg. fahrenheit | 3 | 12 | 8 | August 31, 2013 | 12% over the limit |
| Sulfate, total [as SO4] | 26 | 19 | 7 | May 31, 2025 | 36% over the limit |
| Oil & Grease | 14 | 37 | 3 | April 30, 2025 | 90% over the limit |
| Cadmium, total recoverable | 8 | 21 | 3 | October 31, 2010 | 225% over the limit |
| Selenium, total recoverable | 14 | 14 | 2 | July 31, 2007 | 12% over the limit |
| Flow, in conduit or thru treatment plant | 34 | 49 | 1 | May 31, 2014 | 48% over the limit |
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 4 | 15 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 4 | 15 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 4 | 14 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 4 | 14 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 4 | 13 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 4 | 13 | 0 | ||
| Streamflow | 0 | 12 | 0 | ||
| Oxygen, dissolved [DO] | 9 | 4 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 4 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 3 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 3 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 3 | 4 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 4 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 3 | 4 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 3 | 4 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 3 | 4 | 0 | ||
| Whole effluent toxicity | 6 | 2 | 0 | ||
| Phosphorus, total [as P] | 2 | 2 | 0 | ||
| Chromium, hexavalent [as Cr] | 2 | 2 | 0 | ||
| Nickel, total recoverable | 2 | 2 | 0 | ||
| Silver total recoverable | 2 | 2 | 0 | ||
| Chromium III | 2 | 2 | 0 | ||
| Cyanide, total recoverable | 2 | 2 | 0 | ||
| Mercury, total recoverable | 1 | 1 | 0 | ||
| Temperature, water deg. centigrade | 2 | 0 | 0 |
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES AR0000752.
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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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.