Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
ENGINEERED POLYMER SOLUTIONS INC
Quick Summary
- •Released 4,704 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 $919,298 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
5501 E SLAUSON AVE
LOS ANGELES, CA 90040
View on map ↗ - County
- LOS ANGELES County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 325211
- Inspections
- 8 · last Aug 5, 2024
- Total Penalties
- $919,298 · last Sep 24, 2025
- Registry ID
- 110000902621
How This Compares
#174
of 996 TRI reporters in CA
#5,129
of 16,877 TRI reporters in Manufacturing
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.
0
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
5
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)
+90% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 4,083 | — |
| 2016 | 4,640 | +14% |
| 2017 | 4,704 | +1% |
| 2018 | 7,177 | +53% |
| 2019 | 3 | -100% |
| 2020 | 9,313 | +310333% |
| 2021 | 8,752 | -6% |
| 2022 | 9,242 | +6% |
| 2023 | 5,623 | -39% |
| 2024 | 7,766 | +38% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Naphthalene | — | — | — | — | 1,746 | ♦ Carcinogen |
| Ethylene glycol | — | — | — | — | 536 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | — | — | — | — | |
| Acrylic acid | — | — | — | — | 1,154 | |
| Dimethyl phthalate | — | — | — | — | — | |
| Ethylbenzene | — | — | — | — | — | ♦ Carcinogen |
| 1,2,4-Trimethylbenzene | — | — | — | — | 1,626 | |
| Methyl methacrylate | 6,270 | 6,270 | — | — | 62 | |
| Butyl acrylate | 955 | 955 | — | — | — | |
| Xylene (mixed isomers) | 271 | 271 | — | — | 9,425 | |
| Styrene | 159 | 159 | — | — | 92 | ♦ Carcinogen |
| n-Butyl alcohol | 93 | 93 | — | — | 2,537 | |
| Certain glycol ethers | 10 | 10 | — | — | 6,273 | |
| Phthalic anhydride | 4 | 4 | — | — | 2,708 | |
| Diisocyanates | 4 | 4 | — | — | 6,430 |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nonylphenol Ethoxylates | — | — | — | — | 1,086 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | — | — | — | — | |
| Ethylene glycol | — | — | — | — | — | |
| Dimethyl phthalate | — | — | — | — | 805 | |
| Naphthalene | — | — | — | — | 1,552 | ♦ Carcinogen |
| Acrylic acid | — | — | — | — | 1,182 | |
| Methyl methacrylate | 3,957 | 3,957 | — | — | 153 | |
| Butyl acrylate | 963 | 963 | — | — | — | |
| Xylene (mixed isomers) | 333 | 333 | — | — | 13,087 | |
| Styrene | 154 | 154 | — | — | 388 | ♦ Carcinogen |
| n-Butyl alcohol | 101 | 101 | — | — | 12,524 | |
| Ethylbenzene | 55 | 55 | — | — | 1,024 | ♦ Carcinogen |
| Ammonia | 43 | 43 | — | — | 28 | |
| Certain glycol ethers | 10 | 10 | — | — | 4,634 | |
| Phthalic anhydride | 4 | 4 | — | — | 2,501 | |
| Diisocyanates | 3 | 3 | — | — | 8,092 |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Acrylic acid | — | — | — | — | 1,352 | |
| Naphthalene | — | — | — | — | 3,222 | ♦ Carcinogen |
| Nonylphenol Ethoxylates | — | — | — | — | 695 | |
| Dimethyl phthalate | — | — | — | — | 503 | |
| Ethylene glycol | — | — | — | — | 1,310 | |
| Methyl methacrylate | 6,515 | 6,515 | — | — | 409 | |
| Butyl acrylate | 800 | 800 | — | — | — | |
| Vinyl acetate | 764 | 764 | — | — | 1,209 | ♦ Carcinogen |
| n-Butyl alcohol | 406 | 406 | — | — | 25,209 | |
| Styrene | 314 | 314 | — | — | 93 | ♦ Carcinogen |
| Xylene (mixed isomers) | 275 | 275 | — | — | 42,148 | |
| Ammonia | 64 | 64 | — | — | 44 | |
| Ethylbenzene | 50 | 50 | — | — | 5,635 | ♦ Carcinogen |
| Certain glycol ethers | 48 | 48 | — | — | 5,641 | |
| Diisocyanates | 3 | 3 | — | — | 8,542 | |
| Phthalic anhydride | 3 | 3 | — | — | 1,884 |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Dimethyl phthalate | — | — | — | — | 568 | |
| 1,2,4-Trimethylbenzene | — | — | — | — | 2,233 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | — | — | — | — | |
| Naphthalene | — | — | — | — | 2,189 | ♦ Carcinogen |
| Ethylene glycol | — | — | — | — | 5,003 | |
| Nonylphenol Ethoxylates | — | — | — | — | 2,040 | |
| Methyl methacrylate | 5,679 | 5,679 | — | — | 168 | |
| Vinyl acetate | 945 | 945 | — | — | 1,019 | ♦ Carcinogen |
| Butyl acrylate | 922 | 922 | — | — | — | |
| n-Butyl alcohol | 450 | 450 | — | — | 5,787 | |
| Styrene | 333 | 333 | — | — | 256 | ♦ Carcinogen |
| Xylene (mixed isomers) | 272 | 272 | — | — | 39,212 | |
| Ammonia | 75 | 75 | — | — | 276 | |
| Ethylbenzene | 46 | 46 | — | — | 9,118 | ♦ Carcinogen |
| Certain glycol ethers | 23 | 23 | — | — | 1,996 | |
| Diisocyanates | 4 | 4 | — | — | 9,539 | |
| Phthalic anhydride | 2 | 2 | — | — | 6,729 | |
| Acrylic acid | 1 | 1 | — | — | 1,397 |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Diisocyanates | — | — | — | — | 5,563 | |
| Ethylene glycol | — | — | — | — | 4,631 | |
| Acrylic acid | — | — | — | — | 881 | |
| Naphthalene | — | — | — | — | 1,756 | ♦ Carcinogen |
| Methyl methacrylate | 6,003 | 6,003 | — | — | 46 | |
| Vinyl acetate | 1,379 | 1,379 | — | — | 903 | ♦ Carcinogen |
| Butyl acrylate | 557 | 557 | — | — | — | |
| Xylene (mixed isomers) | 467 | 467 | — | — | 16,260 | |
| n-Butyl alcohol | 395 | 395 | — | — | 5,063 | |
| Styrene | 352 | 352 | — | — | 144 | ♦ Carcinogen |
| Ethylbenzene | 75 | 75 | — | — | 4,768 | ♦ Carcinogen |
| Ammonia | 67 | 67 | — | — | 201 | |
| Certain glycol ethers | 14 | 14 | — | — | 1,164 | |
| Phthalic anhydride | 2 | 2 | — | — | 3,309 | |
| 1,2,4-Trimethylbenzene | 2 | 2 | — | — | 4,452 |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| 1,2,4-Trimethylbenzene | 2 | 2 | — | — | 3,091 | |
| Acrylic acid | 1 | 1 | — | — | 850 |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Naphthalene | — | — | — | — | 548 | ♦ Carcinogen |
| Ethylene glycol | — | — | — | — | — | |
| Diisocyanates | — | — | — | — | 2,867 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | — | — | — | — | |
| Methyl methacrylate | 4,711 | 4,711 | — | — | 5,153 | |
| Butyl acrylate | 668 | 668 | — | — | 1,485 | |
| Vinyl acetate | 623 | 623 | — | — | 795 | ♦ Carcinogen |
| Styrene | 575 | 575 | — | — | 175 | ♦ Carcinogen |
| n-Butyl alcohol | 270 | 270 | — | — | 34,893 | |
| Xylene (mixed isomers) | 250 | 250 | — | — | 108,582 | |
| Ethylbenzene | 51 | 51 | — | — | 12,698 | ♦ Carcinogen |
| Ammonia | 15 | 15 | — | — | 371 | |
| Certain glycol ethers | 6 | 6 | — | — | 763 | |
| 1,2,4-Trimethylbenzene | 4 | 4 | — | — | 1,054 | |
| Phthalic anhydride | 2 | 2 | — | — | 2,235 | |
| Acrylic acid | 2 | 2 | — | — | 631 |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Ethylene glycol | — | — | — | — | 734 | |
| Diisocyanates | — | — | — | — | 4,099 | |
| Xylene (mixed isomers) | 1,646 | 1,646 | — | — | 82,197 | |
| Methyl methacrylate | 786 | 786 | — | — | 13,115 | |
| n-Butyl alcohol | 697 | 697 | — | — | 910 | |
| Vinyl acetate | 367 | 367 | — | — | 904 | ♦ Carcinogen |
| Certain glycol ethers | 332 | 332 | — | — | 2,047 | |
| Styrene | 266 | 266 | — | — | 280 | ♦ Carcinogen |
| Butyl acrylate | 259 | 259 | — | — | 99 | |
| Ethylbenzene | 182 | 182 | — | — | 3,004 | ♦ Carcinogen |
| Ammonia | 145 | 145 | — | — | 196 | |
| 1,2,4-Trimethylbenzene | 20 | 20 | — | — | 1,186 | |
| Phthalic anhydride | 2 | 2 | — | — | 2,316 | |
| Acrylic acid | 1 | 1 | — | — | 617 | |
| Naphthalene | 1 | 1 | — | — | 565 | ♦ Carcinogen |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium | — | — | — | — | — | |
| Methyl methacrylate | 1,492 | 1,492 | — | — | 307 | |
| Xylene (mixed isomers) | 736 | 736 | — | — | 5,665 | |
| n-Butyl alcohol | 512 | 512 | — | — | 19,933 | |
| Certain glycol ethers | 501 | 501 | — | — | 3,918 | |
| Vinyl acetate | 370 | 370 | — | — | 1,269 | ♦ Carcinogen |
| Styrene | 332 | 332 | — | — | 307 | ♦ Carcinogen |
| Butyl acrylate | 306 | 306 | — | — | 167 | |
| Ethylbenzene | 179 | 179 | — | — | 1,106 | ♦ Carcinogen |
| Ammonia | 145 | 145 | — | — | 359 | |
| Diisocyanates | 37 | 37 | — | — | 3,740 | |
| 1,2,4-Trimethylbenzene | 26 | 26 | — | — | 709 | |
| Acrylic acid | 1 | 1 | — | — | 1,370 | |
| Ethylene glycol | 1 | 1 | — | — | 532 | |
| Phthalic anhydride | 1 | 1 | — | — | 5,270 | |
| Naphthalene | 1 | 1 | — | — | 16,391 | ♦ Carcinogen |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Methyl methacrylate | 1,168 | 1,168 | — | — | 244 | |
| Xylene (mixed isomers) | 644 | 644 | — | — | 9,935 | |
| n-Butyl alcohol | 504 | 504 | — | — | 22,559 | |
| Certain glycol ethers | 499 | 499 | — | — | 1,131 | |
| Vinyl acetate | 327 | 327 | — | — | — | ♦ Carcinogen |
| Styrene | 311 | 311 | — | — | 73 | ♦ Carcinogen |
| Butyl acrylate | 297 | 297 | — | — | 134 | |
| Ethylbenzene | 157 | 157 | — | — | 38 | ♦ Carcinogen |
| Ammonia | 124 | 124 | — | — | 281 | |
| Diisocyanates | 25 | 25 | — | — | 2,520 | |
| 1,2,4-Trimethylbenzene | 23 | 23 | — | — | 528 | |
| Phthalic anhydride | 2 | 2 | — | — | 10,458 | |
| Ethylene glycol | 1 | 1 | — | — | 464 | |
| Acrylic acid | 1 | 1 | — | — | 1,257 |
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 |
|---|---|---|---|---|
| Certain glycol ethers | — | — | 281 | 5,944 |
| Ethylene glycol | — | — | 528 | 59 |
| Methyl methacrylate | — | — | 62 | 21,916 |
| Xylene (mixed isomers) | — | 21,500 | 8,313 | 3,233 |
| Diisocyanates | — | — | — | 6,430 |
| Acrylic acid | — | — | — | 1,157 |
| 1,2,4-Trimethylbenzene | — | — | 682 | 845 |
| Styrene | — | — | 92 | 429 |
| n-Butyl alcohol | — | — | 1,863 | 1,814 |
| Naphthalene | — | — | 908 | 773 |
| Butyl acrylate | — | — | — | 1,628 |
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 |
|---|---|---|---|---|---|
|
HERITAGE (BENTON AR)
BENTON, AR
|
1,2,4-Trimethylbenzene | — | — | 682 | — |
|
HERITAGE THERMAL SERVICES INC
EAST LIVERPOOL, OH
|
1,2,4-Trimethylbenzene | — | — | — | 4 |
|
MAUSER
MONTEBELLO, CA
|
1,2,4-Trimethylbenzene | — | — | — | 837 |
|
US ECOLOGY BEATTY
BEATTY, NV
|
1,2,4-Trimethylbenzene | 103 | — | — | — |
|
MAUSER
MONTEBELLO, CA
|
Acrylic acid | — | — | — | 1,154 |
|
HERITAGE (BENTON AR)
BENTON, AR
|
Certain glycol ethers | — | — | — | 2,808 |
|
US ECOLOGY BEATTY
BEATTY, NV
|
Certain glycol ethers | 54 | — | — | — |
|
MAUSER
MONTEBELLO, CA
|
Certain glycol ethers | — | — | — | 3,130 |
|
HERITAGE (BENTON AR)
BENTON, AR
|
Methyl methacrylate | — | — | 62 | — |
|
HERITAGE (BENTON AR)
BENTON, AR
|
Naphthalene | — | — | 908 | — |
|
US ECOLOGY BEATTY
BEATTY, NV
|
Naphthalene | 65 | — | — | — |
|
MAUSER
MONTEBELLO, CA
|
Naphthalene | — | — | — | 773 |
|
ANTELOPE VALLEY RECYCLING AND DISPOSAL F
PALMDALE, CA
|
Phthalic anhydride | 2,708 | — | — | — |
|
HERITAGE (BENTON AR)
BENTON, AR
|
Styrene | — | — | 92 | — |
|
US ECOLOGY BEATTY
BEATTY, NV
|
Xylene (mixed isomers) | 9 | — | — | — |
|
MAUSER
MONTEBELLO, CA
|
Xylene (mixed isomers) | — | — | — | 1,103 |
|
HERITAGE (BENTON AR)
BENTON, AR
|
Xylene (mixed isomers) | — | — | 8,313 | — |
|
HERITAGE (BENTON AR)
BENTON, AR
|
n-Butyl alcohol | — | — | 1,863 | — |
|
US ECOLOGY BEATTY
BEATTY, NV
|
n-Butyl alcohol | 114 | — | — | — |
|
MAUSER
MONTEBELLO, CA
|
n-Butyl alcohol | — | — | — | 560 |
|
MAUSER
MONTEBELLO, CA
|
Diisocyanates | — | — | — | 6,428 |
|
HERITAGE THERMAL SERVICES INC
EAST LIVERPOOL, OH
|
Diisocyanates | — | — | — | 2 |
|
HERITAGE (BENTON AR)
BENTON, AR
|
Ethylene glycol | — | — | 528 | — |
|
US ECOLOGY BEATTY
BEATTY, NV
|
Ethylene glycol | 8 | — | — | — |
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 |
|---|---|---|---|---|
| cwa | Effluent Violations - Unauthorized Discharge | Jul 7, 2022 | — | Open |
| rcra | Standards Applicable to Generators of HW: General | May 4, 2021 | May 7, 2024 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | May 4, 2021 | Jul 14, 2021 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Air Emission Standards for Equipment Leaks | May 4, 2021 | May 7, 2024 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Air Emission Standards for Tanks, Surface Impoundments and Containers | May 4, 2021 | May 7, 2024 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Tank Systems | May 4, 2021 | May 7, 2024 | Resolved |
| rcra | Land Disposal Restrictions: General | May 4, 2021 | May 7, 2024 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | May 23, 2012 | Mar 12, 2013 | 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.
Administrative - Formal
· Case 09-2025-5091 · Sep 24, 2025
$306,436
INSPECTION REPORT WRITTEN
RCRA (Hazardous Waste)
· Case RCRA-CAD002277093-001 · Sep 24, 2025
$306,426
FINAL 3008(A) COMPLIANCE ORDER
RCRA (Hazardous Waste)
· Case RCRA-CAD002277093-002 · Sep 24, 2025
$306,436
State CWA Penalty AO
Clean Water Act
· Case CA-ZFEA446817 · Jul 7, 2022
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