Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
DUPONT LA PORTE PLANT
Quick Summary
- •Released 3,116 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 $17,500 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
12501 STRANG RD
LA PORTE, TX 77572
View on map ↗ - County
- HARRIS County
- Industry
- Real Estate and Rental and Leasing
- NAICS (North American Industry Classification)
- 531312
- Inspections
- 6 · last Oct 27, 2025
- Total Penalties
- $17,500 · last Sep 17, 2025
- Registry ID
- 110000463542
How This Compares
#730
of 1,879 TRI reporters in TX
#2
of 3 TRI reporters in Real Estate and Rental and Leasing
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.
1
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
7
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
12
Hazardous Waste (RCRA)
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.
Emissions Trend (2015–2024)
-100% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 409,822 | — |
| 2016 | 8,826 | -98% |
| 2017 | 3,116 | -65% |
| 2018 | 2,715 | -13% |
| 2019 | 2,581 | -5% |
| 2020 | 1,929 | -25% |
| 2021 | 750 | -61% |
| 2022 | 616 | -18% |
| 2023 | 750 | +22% |
| 2024 | 750 | 0% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Polycyclic aromatic compounds | — | — | — | — | 1,652 | ♦ Carcinogen |
| Methanol | 750 | 750 | — | — | — |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Benzo[g,h,i]perylene | — | — | — | — | 10 | |
| Polycyclic aromatic compounds | — | — | — | — | 7,437 | ♦ Carcinogen |
| Methanol | 750 | 750 | — | — | — |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Polycyclic aromatic compounds | — | — | — | — | 3,283 | ♦ Carcinogen |
| Methanol | 616 | 616 | — | — | — |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Benzo[g,h,i]perylene | — | — | — | — | 10 | |
| Polycyclic aromatic compounds | — | — | — | — | 7,378 | ♦ Carcinogen |
| Methanol | 750 | 750 | — | — | — |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Benzo[g,h,i]perylene | — | — | — | — | 17 | |
| Polycyclic aromatic compounds | — | — | — | — | 12,671 | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | — | — | — | — | 0 | ♦ Carcinogen |
| Methanol | 1,929 | 1,929 | — | — | — |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Dioxin and dioxin-like compounds | — | — | — | — | 0 | ♦ Carcinogen |
| Polycyclic aromatic compounds | — | — | — | — | 1,604 | ♦ Carcinogen |
| Methanol | 2,572 | 2,572 | — | — | — | |
| Chlorine | 9 | 9 | — | — | — |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Polycyclic aromatic compounds | — | — | — | — | 4,215 | ♦ Carcinogen |
| Methanol | 2,572 | 2,572 | — | — | — | |
| Chlorine | 143 | 143 | — | — | — |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Polycyclic aromatic compounds | — | — | — | — | 1,260 | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | — | — | — | — | 0 | ♦ Carcinogen |
| Creosote | — | — | — | — | 16,735 | ♦ Carcinogen |
| Methanol | 2,572 | 2,572 | — | — | 20 | |
| Ammonia | 401 | — | 401 | — | — | |
| Chlorine | 143 | 143 | — | — | — |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Dioxin and dioxin-like compounds | — | — | — | — | 0 | ♦ Carcinogen |
| Polycyclic aromatic compounds | — | — | — | — | 1,500 | ♦ Carcinogen |
| Creosote | — | — | — | — | 19,904 | ♦ Carcinogen |
| Methanol | 7,526 | 7,526 | — | — | 72,681 | |
| Acetonitrile | 1,157 | 1,157 | — | — | 1,877 | |
| Chlorine | 143 | 143 | — | — | — |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Polycyclic aromatic compounds | — | — | — | — | 750 | ♦ Carcinogen |
| Creosote | — | — | — | — | 9,951 | ♦ Carcinogen |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 363,763 | — | 363,763 | — | — | |
| Methanol | 16,288 | 16,288 | — | — | 171,385 | |
| Toluene | 13,441 | 13,441 | — | — | 131,687 | |
| Sodium nitrite | 5,681 | — | 5,681 | — | — | |
| n-Hexane | 4,678 | 4,678 | — | — | 4 | |
| Dimethylamine | 2,355 | 2,355 | — | — | 249,789 | |
| Acetonitrile | 1,974 | 1,974 | — | — | 638 | |
| Ammonia | 1,154 | — | 1,154 | — | — | |
| Chlorine | 143 | 143 | — | — | — | |
| Manganese | 133 | — | 133 | — | — | |
| Hexazinone | 105 | — | 105 | — | 95,862 | |
| Nickel | 93 | — | 93 | — | 773 | ♦ Carcinogen |
| Chromium | 14 | — | 14 | — | — |
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 |
|---|---|---|---|---|
| Methanol | — | — | — | 89,834 |
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 |
|---|---|---|---|---|---|
|
BLUE RIDGE LANDFILL
FRESNO, TX
|
Polycyclic aromatic compounds | 1,652 | — | — | — |
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 | Linked to Viol. Below | — | — | Open |
| cwa | Schedule Event reported late | Jan 15, 2026 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 15, 2026 | — | Open |
| cwa | Schedule Event achieved late but reported | Jul 15, 2025 | — | Open |
| cwa | Schedule Event reported late | Jul 15, 2025 | — | Open |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Jan 28, 2025 | Feb 5, 2025 | Resolved |
| caa | FRV | Jan 24, 2025 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 15, 2025 | — | Open |
| cwa | Schedule Event reported late | Jan 15, 2025 | — | Open |
| caa | FRV | Jan 12, 2023 | — | Open |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Feb 24, 2022 | Mar 28, 2022 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Nov 17, 2021 | Dec 7, 2021 | Resolved |
| caa | FRV | Jul 8, 2020 | — | Open |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Sep 20, 2013 | Dec 23, 2013 | Resolved |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Nov 5, 2010 | Nov 8, 2010 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Air Emission Standards for Equipment Leaks | Nov 3, 2010 | Nov 5, 2010 | Resolved |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Nov 3, 2010 | Nov 5, 2010 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Contingency Plan and Emergency Procedures | Nov 1, 2010 | Nov 8, 2010 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Nov 1, 2010 | Nov 1, 2010 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Tank Systems | Nov 1, 2010 | Nov 8, 2010 | Resolved |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Nov 1, 2010 | Nov 1, 2010 | Resolved |
| rcra | Standards for Used Oil: Generators | Feb 2, 2010 | Feb 2, 2010 | Resolved |
| rcra | Land Disposal Restrictions: Prohibitions on Storage | Feb 2, 2010 | Feb 2, 2010 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Feb 2, 2010 | Feb 2, 2010 | Resolved |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Feb 2, 2010 | Feb 3, 2010 | Resolved |
| rcra | Land Disposal Restrictions: General | Jan 15, 2008 | Jan 8, 2010 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Jan 15, 2008 | Jan 8, 2010 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Financial Requirements | Jan 15, 2008 | Jan 8, 2010 | Resolved |
| rcra | EPA Administered Permit Programs: the HW Permit Program General Information | Jan 15, 2008 | Jan 8, 2010 | Resolved |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Oct 16, 2003 | Oct 22, 2003 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Dec 28, 1992 | May 5, 1994 | Resolved |
| cwa | Schedule Event achieved late but reported | Aug 22, 1991 | — | Open |
| cwa | Schedule Event achieved late but reported | Sep 23, 1989 | — | Open |
| rcra | Land Disposal Restrictions: General | Sep 21, 1989 | Dec 7, 1989 | Resolved |
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 |
|---|---|---|---|---|---|---|
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.34 mg/L | 0.17 | +106% | Jul 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.05 | +182% | Jul 2025 | Resolved |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.24 mg/L | 0.17 | +45% | Jun 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 130.00 mg/L | 100.00 | +30% | Jun 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 30.70 mg/L | 30.00 | +2% | Jun 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.05 | +159% | Jun 2025 | Resolved |
| Enterococci | DMR, Limited - Numeric Violation | 3,800.00 MPN/100mL | 104.00 | +3,554% | Jun 2025 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 806.00 MPN/100mL | 35.00 | +2,203% | Jun 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.05 mg/L | 0.05 | +8% | May 2025 | Resolved |
| Carbon, tot organic [TOC] | DMR, Limited - Numeric Violation | 61.00 mg/L | 24.00 | +154% | Apr 2025 | Open |
| Carbon, tot organic [TOC] | DMR, Limited - Numeric Violation | 59.00 mg/L | 24.00 | +146% | Mar 2025 | Open |
| pH range excursions, > 60 minutes | DMR, Limited - Numeric Violation | 0.03 occur/d | 0.00 | +2,147,483,650% | Jan 2025 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 5,600.00 MPN/100mL | 104.00 | +5,285% | Nov 2024 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 1,980.00 MPN/100mL | 35.00 | +5,557% | Nov 2024 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.26 mg/L | 0.17 | +58% | Jun 2024 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.11 mg/L | 0.05 | +120% | Jun 2024 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 0.00 mg/L | 4.00 | +100% | Jun 2023 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.05 | +51% | Apr 2022 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 14,258.00 MPN/100mL | 35.00 | +40,637% | Sep 2021 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 57,000.00 MPN/100mL | 104.00 | +54,708% | Sep 2021 | Open |
| Carbon, tot organic [TOC] | DMR, Limited - Numeric Violation | 54.00 mg/L | 24.00 | +125% | Jun 2021 | Open |
| Carbon, tot organic [TOC] | DMR, Limited - Numeric Violation | 36.00 mg/L | 24.00 | +50% | May 2021 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 22,000.00 MPN/100mL | 104.00 | +21,054% | Nov 2020 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 4,408.00 MPN/100mL | 35.00 | +12,494% | Nov 2020 | Open |
| Carbon, tot organic [TOC] | DMR, Limited - Numeric Violation | 37.00 mg/L | 24.00 | +54% | Jan 2018 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 11,000.00 MPN/100mL | 104.00 | +10,477% | Dec 2017 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 722.53 kg/d | 583.84 | +24% | Dec 2017 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 3,673.00 MPN/100mL | 35.00 | +10,394% | Dec 2017 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 19.68 MGD | 19.50 | +1% | Aug 2017 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.06 mg/L | 0.05 | +16% | Aug 2017 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 278.35 kg/d | 211.11 | +32% | Jan 2017 | Open |
| pH range excursions, > 60 minutes | DMR, Limited - Numeric Violation | 0.03 occur/d | 0.00 | +2,147,483,650% | Dec 2016 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 0.08 mg/L | 0.05 | +69% | Dec 2016 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.09 | +57% | Dec 2016 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.04 | +76% | Dec 2016 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 0.06 MGD | 0.06 | +5% | Feb 2016 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 970.48 kg/d | 583.84 | +66% | Jan 2016 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 365.83 kg/d | 211.11 | +73% | Jan 2016 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 5.77 kg/d | 4.99 | +15% | Sep 2015 | Open |
| Methomyl | DMR, Limited - Numeric Violation | 0.32 kg/d | 0.09 | +266% | Jun 2015 | Open |
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.
Date Out of Range
Clean Air Act
· Case 3604288069
Date Out of Range
Clean Air Act
· Case 3603305023
Administrative - Formal
Clean Air Act
· Case 3603543537 · Sep 17, 2025
$17,500
VERBAL INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-TXD008079212-9 · Sep 3, 2025
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-TXD008079212-8 · May 11, 2022
Judicial
· Case 06-2010-1100 · Sep 24, 2020
$3,420,000
Judicial
· Case 06-2017-3400 · Sep 7, 2018
$3,100,000
State CWA Penalty AO
Clean Water Act
· Case TX-2013-2104-IWD-E · Aug 15, 2014
$26,250
Administrative - Formal
· Case 06-2014-1766 · Apr 9, 2014
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-TXD008079212-7 · Nov 26, 2013
State CWA Penalty AO
Clean Water Act
· Case TX-2012-0050-IWD-E · Nov 11, 2012
$91,125
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-TXD008079212-6 · Dec 16, 2010
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-TXD008079212-4 · Dec 14, 2010
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-TXD008079212-5 · Dec 14, 2010
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-TXD008079212-3 · Apr 1, 2010
VERBAL INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-TXD008079212-2 · Feb 2, 2010
Administrative - Formal
· Case 06-2008-2902 · Sep 16, 2008
$5,688
State CWA Non Penalty AO
Clean Water Act
· Case TX-N00008251 · Apr 3, 2008
$20,400
Judicial
· Case 06-2003-3339 · Nov 1, 2007
$1,168,750
State CWA Non Penalty AO
Clean Water Act
· Case TX-N00005666 · Mar 3, 2005
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