SMACKOVER REFINERY
Quick Summary
- •Released 7,415 lbs of toxic chemicals to the environment in the most recent TRI reporting year.
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $56,240 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
484 EAST 6TH
EL DORADO, AR 71762
View on map ↗ - County
- UNION County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 324110
- Inspections
- 4 · last Nov 10, 2025
- Total Penalties
- $56,240 · last Aug 22, 2025
- Registry ID
- 110038160584
How This Compares
Ranked by most recent year's total TRI releases.
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
Qtrs Non-Compliant
Qtrs Non-Compliant
Qtrs Non-Compliant
TRI Toxic Chemical Releases
Annual pounds of each toxic chemical released to air, water, and land, as reported to the EPA Toxic Release Inventory. Carcinogen (♦) and PFAS designations are per EPA and IARC classifications.
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 12,389 | — |
| 2016 | 12,434 | 0% |
| 2017 | 7,415 | -40% |
| 2018 | 457 | -94% |
| 2019 | 165 | -64% |
| 2020 | 519 | +214% |
| 2021 | 528 | +2% |
| 2022 | 461 | -13% |
| 2023 | 482 | +4% |
| 2024 | 149 | -69% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Benzene | — | — | — | — | — | ♦ Carcinogen |
| Ethylbenzene | — | — | — | — | — | ♦ Carcinogen |
| o-Xylene | — | — | — | — | — | |
| n-Hexane | — | — | — | — | — | |
| p-Xylene | — | — | — | — | — | |
| Toluene | 89 | 88 | 1 | — | 91 | |
| m-Xylene | 56 | 56 | 1 | — | 72 | |
| Polycyclic aromatic compounds | 3 | 3 | — | — | 2 | ♦ Carcinogen |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| p-Xylene | — | — | — | — | — | |
| n-Hexane | 204 | 204 | 1 | — | 3,452 | |
| Toluene | 106 | 105 | 1 | — | 3,607 | |
| m-Xylene | 69 | 68 | 1 | — | 2,853 | |
| Ethylbenzene | 58 | 57 | 0 | — | 1,472 | ♦ Carcinogen |
| Benzene | 31 | 31 | 0 | — | 711 | ♦ Carcinogen |
| Polycyclic aromatic compounds | 9 | 9 | — | — | 66 | ♦ Carcinogen |
| o-Xylene | 4 | 4 | 0 | — | 619 |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Benzene | — | — | — | — | — | ♦ Carcinogen |
| p-Xylene | — | — | — | — | — | |
| o-Xylene | — | — | — | — | — | |
| n-Hexane | 213 | 213 | 0 | — | 2,167 | |
| Toluene | 109 | 108 | 1 | — | 2,264 | |
| m-Xylene | 70 | 69 | 1 | — | 1,791 | |
| Ethylbenzene | 61 | 60 | 0 | — | 924 | ♦ Carcinogen |
| Polycyclic aromatic compounds | 8 | 8 | — | — | 41 | ♦ Carcinogen |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| n-Hexane | 223 | 223 | 0 | — | 918 | |
| Toluene | 112 | 111 | 1 | — | 1,394 | |
| m-Xylene | 68 | 67 | 0 | — | 1,183 | |
| Ethylbenzene | 63 | 62 | 0 | — | 795 | ♦ Carcinogen |
| Benzene | 34 | 34 | 0 | — | 581 | ♦ Carcinogen |
| p-Xylene | 16 | 16 | 0 | — | 501 | |
| Polycyclic aromatic compounds | 9 | 9 | — | — | 399 | ♦ Carcinogen |
| o-Xylene | 3 | 3 | 0 | — | 555 |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| n-Hexane | 216 | 216 | 1 | — | 829 | |
| Toluene | 110 | 109 | 1 | — | 866 | |
| m-Xylene | 69 | 68 | 1 | — | 686 | |
| Ethylbenzene | 62 | 61 | 0 | — | 353 | ♦ Carcinogen |
| Benzene | 33 | 33 | 0 | — | 171 | ♦ Carcinogen |
| p-Xylene | 15 | 15 | 0 | — | 102 | |
| Polycyclic aromatic compounds | 8 | 8 | — | — | 16 | ♦ Carcinogen |
| o-Xylene | 4 | 4 | 0 | — | 149 |
2019
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| n-Hexane | 168 | 166 | 1 | 1 | 13,914 | |
| Toluene | 111 | 108 | 1 | 2 | 14,538 | |
| m-Xylene | 60 | 58 | 1 | 2 | 11,500 | |
| Ethylbenzene | 56 | 55 | 0 | 1 | 5,934 | ♦ Carcinogen |
| Benzene | 32 | 32 | 0 | 0 | 9,375 | ♦ Carcinogen |
| p-Xylene | 14 | 14 | 0 | — | 1,716 | |
| Polycyclic aromatic compounds | 13 | 13 | — | — | 265 | ♦ Carcinogen |
| o-Xylene | 3 | 3 | 0 | 0 | 2,495 |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Cyclohexane | 4,191 | 4,191 | — | — | 32 | |
| Ethylbenzene | 3,142 | 3,086 | 56 | — | 24 | ♦ Carcinogen |
| Hydrogen sulfide | 82 | 82 | — | — | 11 | |
| Polycyclic aromatic compounds | 0 | 0 | — | — | 277 | ♦ Carcinogen |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Cyclohexane | 8,606 | 8,606 | — | — | — | |
| Ethylbenzene | 3,757 | 3,701 | 56 | — | 0 | ♦ Carcinogen |
| Hydrogen sulfide | 71 | 71 | — | — | — | |
| Polycyclic aromatic compounds | 0 | 0 | — | — | 437 | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 0 | — | 0 | — | 2 | ♦ Carcinogen |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Cyclohexane | 8,611 | 8,606 | — | 5 | — | |
| Ethylbenzene | 3,762 | 3,701 | 56 | 5 | 47 | ♦ Carcinogen |
| Hydrogen sulfide | 16 | 16 | — | — | 21 | |
| Polycyclic aromatic compounds | 0 | 0 | — | — | 264 | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 0 | — | 0 | — | 0 | ♦ Carcinogen |
Waste Management & Recycling
How this facility manages toxic chemicals beyond direct releases — through recycling, energy recovery, and on-site or off-site treatment. Data from the most recent TRI reporting year. Quantities in pounds.
| Chemical | Released | Recycled | Energy Recovery | Treated |
|---|---|---|---|---|
| m-Xylene | — | — | 72 | — |
| Toluene | — | — | 91 | — |
| Polycyclic aromatic compounds | — | — | 2 | — |
Off-Site Transfer Destinations
Facilities to which toxic chemicals were transferred for disposal, recycling, energy recovery, or treatment during the most recent TRI reporting year. Quantities in pounds.
| Destination | Chemical | Disposal | Recycling | Energy Rec. | Treatment |
|---|---|---|---|---|---|
|
RINECO CHEMICAL INDUSTRIES, LLC
BENTON, AR
|
m-Xylene | — | — | 68 | — |
|
HERITAGE - CRYSTAL CLEAN LLC
LITTLE ROCK, AR
|
m-Xylene | — | — | 4 | — |
|
RINECO CHEMICAL INDUSTRIES, LLC
BENTON, AR
|
Polycyclic aromatic compounds | — | — | 2 | — |
|
RINECO CHEMICAL INDUSTRIES, LLC
BENTON, AR
|
Toluene | — | — | 86 | — |
|
HERITAGE - CRYSTAL CLEAN LLC
LITTLE ROCK, AR
|
Toluene | — | — | 5 | — |
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| caa | — | — | — | Open |
| caa | — | — | — | Open |
| caa | — | — | — | Open |
| caa | — | — | — | Open |
| rcra | Standards Applicable to Generators of HW: Preparedness. Prevention, and Emergency Procedures for LQGs | Jan 21, 2026 | Feb 18, 2026 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Jan 21, 2026 | Feb 18, 2026 | Resolved |
| cwa | Reporting Violations - Late Submittal of DMRs | Sep 3, 2025 | — | Open |
| cwa | Reporting Violations - Late Submittal of DMRs | Jul 25, 2024 | — | Open |
| caa | FRV | Jul 2, 2024 | — | Open |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Nov 2, 2023 | Nov 14, 2023 | Resolved |
| caa | HPV | May 7, 2020 | Jul 20, 2021 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Sep 24, 2019 | Dec 19, 2019 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Sep 24, 2019 | Dec 19, 2019 | Resolved |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Sep 24, 2019 | Oct 30, 2019 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Sep 24, 2019 | Oct 30, 2019 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Contingency Plan and Emergency Procedures | Sep 24, 2019 | Oct 19, 2019 | Resolved |
| cwa | Schedule Event unachieved but reported | Mar 31, 2019 | Jan 13, 2020 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 31, 2019 | — | Open |
| cwa | Schedule Event reported late | Mar 31, 2019 | — | Open |
| cwa | Schedule Event unachieved and not reported | Mar 31, 2019 | Jan 13, 2020 | Resolved |
| cwa | Management Practice Violations - Violation of a milestone in an order | Mar 24, 2019 | — | Open |
| cwa | Monitoring Violations - Analysis not Conducted | Sep 30, 2018 | — | Open |
| caa | FRV | Aug 16, 2018 | — | Open |
| caa | FRV | Apr 15, 2016 | — | Open |
| cwa | Schedule Event unachieved and not reported | Feb 1, 2016 | Jan 13, 2020 | Resolved |
| cwa | Schedule Event reported late | Feb 1, 2016 | — | Open |
| cwa | Schedule Event achieved late but reported | Feb 1, 2016 | — | Open |
| cwa | Schedule Event unachieved but reported | Feb 1, 2016 | Jun 25, 2017 | Resolved |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Mar 2, 2015 | Mar 12, 2015 | Resolved |
| cwa | Schedule Event achieved late but reported | Feb 1, 2015 | — | Open |
| cwa | Schedule Event reported late | Feb 1, 2015 | — | Open |
| cwa | Schedule Event unachieved and not reported | Nov 17, 2014 | Jan 13, 2020 | Resolved |
| cwa | Schedule Event reported late | Nov 17, 2014 | — | Open |
| cwa | Schedule Event achieved late but reported | Nov 17, 2014 | — | Open |
| cwa | Schedule Event unachieved but reported | Nov 17, 2014 | Jan 13, 2020 | Resolved |
| cwa | Schedule Event reported late | Nov 17, 2014 | — | Open |
| cwa | Schedule Event achieved late but reported | Nov 17, 2014 | — | Open |
| cwa | Schedule Event unachieved but reported | Nov 17, 2014 | Jan 13, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Nov 17, 2014 | Jan 13, 2020 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Aug 20, 2014 | Sep 16, 2014 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Aug 20, 2014 | Sep 16, 2014 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Aug 20, 2014 | Sep 16, 2014 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Contingency Plan and Emergency Procedures | Aug 20, 2014 | Sep 16, 2014 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Preparedness and Prevention | Aug 20, 2014 | Sep 16, 2014 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: General Facility Standards | Aug 20, 2014 | Sep 16, 2014 | Resolved |
| rcra | Standards Applicable to Generators of HW: Manifest Requirements Applicable to Small and Large Quantity Generators | Aug 20, 2014 | Sep 16, 2014 | Resolved |
| cwa | Schedule Event achieved late but reported | Feb 1, 2014 | — | Open |
| cwa | WW Storm Water Non-Construction - Failure to properly operate and maintain BMPs | May 21, 2013 | — | Open |
| cwa | WW Storm Water Non-Construction - Discharge without a permit | May 21, 2013 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | May 21, 2013 | — | Open |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Oil & Grease | DMR, Limited - Numeric Violation | 23.00 mg/L | 15.00 | +53% | Jan 2026 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 20.04 kg/d | 19.08 | +5% | Jan 2026 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 13.68 mg/L | 10.00 | +37% | Jan 2026 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 34.40 kg/d | 25.30 | +36% | Dec 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 20.96 kg/d | 16.87 | +24% | Dec 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 20.51 kg/d | 19.08 | +7% | Dec 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 29.00 mg/L | 15.00 | +93% | Dec 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 13.97 mg/L | 10.00 | +40% | Dec 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 50.37 kg/d | 36.29 | +39% | Dec 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 15.10 mg/L | 15.00 | +1% | Oct 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.80 mg/L | 9.40 | +4% | Aug 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.70 kg/d | 3.79 | +51% | Aug 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 14.19 kg/d | 8.47 | +68% | Aug 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 16.73 kg/d | 16.22 | +3% | May 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 26.90 mg/L | 15.00 | +79% | Apr 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 39.40 kg/d | 36.29 | +9% | Apr 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 42.86 kg/d | 36.29 | +18% | Feb 2025 | Resolved |
| Oil & Grease | DMR, Limited - Numeric Violation | 26.90 mg/L | 15.00 | +79% | Feb 2025 | Resolved |
| Oil & Grease | DMR, Limited - Numeric Violation | 12.48 mg/L | 10.00 | +25% | Feb 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 27.70 mg/L | 15.00 | +85% | Jan 2025 | Resolved |
| Oil & Grease | DMR, Limited - Numeric Violation | 47.63 kg/d | 36.29 | +31% | Jan 2025 | Resolved |
| Oil & Grease | DMR, Limited - Numeric Violation | 20.56 kg/d | 19.08 | +8% | Jan 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 15.74 mg/L | 10.00 | +57% | Jan 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 20.00 mg/L | 15.00 | +33% | Dec 2024 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 19.30 mg/L | 15.00 | +29% | Jul 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.70 kg/d | 8.47 | +15% | Jul 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 106.26 kg/d | 79.51 | +34% | Feb 2024 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 17.80 mg/L | 15.00 | +19% | Nov 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 24.40 mg/L | 9.40 | +160% | Oct 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.51 kg/d | 3.79 | +125% | Oct 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 32.31 kg/d | 8.47 | +281% | Oct 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 6.42 mg/L | 4.20 | +53% | Oct 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 62.61 kg/d | 50.94 | +23% | Jan 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 280.61 kg/d | 79.51 | +253% | Jan 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 157.52 kg/d | 79.51 | +98% | Apr 2022 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 14.20 kg/d | 10.81 | +31% | Sep 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 11.26 kg/d | 8.47 | +33% | Sep 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.07 kg/d | 3.79 | +7% | Sep 2020 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 24.52 kg/d | 16.22 | +51% | Sep 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 89.07 kg/d | 79.51 | +12% | Feb 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 88.66 kg/d | 79.51 | +12% | Dec 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.40 mg/L | 9.40 | +11% | Oct 2019 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 13.83 kg/d | 8.47 | +63% | Oct 2019 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.14 kg/d | 3.79 | +9% | Oct 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 89.21 kg/d | 79.51 | +12% | Jun 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 14.16 mg/L | 4.20 | +237% | May 2019 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 14.49 kg/d | 3.79 | +283% | May 2019 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 23.00 mg/L | 9.40 | +145% | May 2019 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 29.71 kg/d | 8.47 | +251% | May 2019 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 28.10 mg/L | 15.00 | +87% | Apr 2019 | Resolved |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.