Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
SEM PRODUCTS INC
Quick Summary
- •Released 9,042 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 $0 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
1685 OVERVIEW DR
ROCK HILL, SC 29730
View on map ↗ - County
- YORK County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 334417
- Inspections
- 4 · last Aug 19, 2025
- Total Penalties
- $0 · last Jan 27, 2020
- Registry ID
- 110001675492
How This Compares
#149
of 540 TRI reporters in SC
#4,185
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.
1
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
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)
+30% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 11,464 | — |
| 2016 | 10,761 | -6% |
| 2017 | 9,042 | -16% |
| 2018 | 7,686 | -15% |
| 2019 | 7,804 | +2% |
| 2020 | 7,804 | 0% |
| 2021 | 10,504 | +35% |
| 2022 | 18,536 | +76% |
| 2023 | 17,034 | -8% |
| 2024 | 14,858 | -13% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 10,441 | 10,441 | — | — | 273,356 | |
| Xylene (mixed isomers) | 1,837 | 1,837 | — | — | 5,736 | |
| Methyl isobutyl ketone | 1,309 | 1,309 | — | — | 1,656 | ♦ Carcinogen |
| Certain glycol ethers | 760 | 760 | — | — | 928 | |
| Methanol | 511 | 511 | — | — | 857 |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 11,384 | 11,384 | — | — | 335,368 | |
| Xylene (mixed isomers) | 2,206 | 2,206 | — | — | 7,404 | |
| Methyl isobutyl ketone | 1,709 | 1,709 | — | — | 2,120 | ♦ Carcinogen |
| Certain glycol ethers | 818 | 818 | — | — | 903 | |
| Methanol | 519 | 519 | — | — | 873 | |
| Ethylbenzene | 398 | 398 | — | — | 2,985 | ♦ Carcinogen |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 13,366 | 13,366 | — | — | 259,418 | |
| Xylene (mixed isomers) | 2,196 | 2,196 | — | — | 15,887 | |
| Methyl isobutyl ketone | 1,099 | 1,099 | — | — | 3,483 | ♦ Carcinogen |
| Certain glycol ethers | 774 | 774 | — | — | 845 | |
| Methanol | 683 | 683 | — | — | 1,120 | |
| Ethylbenzene | 418 | 418 | — | — | 1,720 | ♦ Carcinogen |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 7,439 | 7,439 | — | — | 53,949 | |
| Xylene (mixed isomers) | 3,065 | 3,065 | — | — | 5,794 |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 6,090 | 6,090 | — | — | 37,449 | |
| Xylene (mixed isomers) | 1,714 | 1,714 | — | — | 945 |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 6,090 | 6,090 | — | — | 10,067 | |
| Xylene (mixed isomers) | 1,714 | 1,714 | — | — | 945 |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 7,023 | 7,023 | — | — | 12,000 | |
| Methyl isobutyl ketone | 391 | 391 | — | — | 250 | ♦ Carcinogen |
| Xylene (mixed isomers) | 272 | 272 | — | — | 250 |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 7,050 | 7,050 | — | — | 12,959 | |
| Xylene (mixed isomers) | 1,584 | 1,584 | — | — | 1,214 | |
| Methyl isobutyl ketone | 408 | 408 | — | — | 243 | ♦ Carcinogen |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 7,545 | 7,545 | — | — | 1,858 | |
| Xylene (mixed isomers) | 2,473 | 2,398 | 75 | — | 250 | |
| Methyl isobutyl ketone | 743 | 743 | — | — | 41 | ♦ Carcinogen |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Toluene | 8,470 | 8,220 | 250 | — | 10,384 | |
| Xylene (mixed isomers) | 2,302 | 2,302 | — | — | 1,154 | |
| Methyl isobutyl ketone | 692 | 692 | — | — | 250 | ♦ 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 |
|---|---|---|---|---|
| Xylene (mixed isomers) | — | — | 5,551 | 185 |
| Methyl isobutyl ketone | — | — | 266 | 1,390 |
| Toluene | — | — | 273,171 | 185 |
| Certain glycol ethers | — | — | 27 | 901 |
| Methanol | — | — | 127 | 730 |
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 THERMAL SERVICES INC
EAST LIVERPOOL, OH
|
Certain glycol ethers | — | — | — | 90 |
|
RINECO CHEMICAL INDUSTRIES, LLC
BENTON, AR
|
Certain glycol ethers | — | — | 27 | — |
|
MAUSER PACKAGING SOLUTIONS
CHARLOTTE, NC
|
Certain glycol ethers | — | — | — | 811 |
|
HERITAGE THERMAL SERVICES INC
EAST LIVERPOOL, OH
|
Methanol | — | — | — | 185 |
|
RINECO CHEMICAL INDUSTRIES, LLC
BENTON, AR
|
Methanol | — | — | 127 | — |
|
MAUSER PACKAGING SOLUTIONS
CHARLOTTE, NC
|
Methanol | — | — | — | 545 |
|
RINECO CHEMICAL INDUSTRIES, LLC
BENTON, AR
|
Methyl isobutyl ketone | — | — | 266 | — |
|
MAUSER PACKAGING SOLUTIONS
CHARLOTTE, NC
|
Methyl isobutyl ketone | — | — | — | 1,390 |
|
HERITAGE THERMAL SERVICES INC
EAST LIVERPOOL, OH
|
Toluene | — | — | — | 185 |
|
RINECO CHEMICAL INDUSTRIES, LLC
BENTON, AR
|
Toluene | — | — | 273,171 | — |
|
HERITAGE THERMAL SERVICES INC
EAST LIVERPOOL, OH
|
Xylene (mixed isomers) | — | — | — | 185 |
|
RINECO CHEMICAL INDUSTRIES, LLC
BENTON, AR
|
Xylene (mixed isomers) | — | — | 5,551 | — |
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 | FRV | Jun 5, 2025 | — | Open |
| caa | FRV | Feb 15, 2022 | — | Open |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Jul 11, 2019 | Jan 7, 2020 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Jul 11, 2019 | Jan 7, 2020 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Jul 11, 2019 | Jan 7, 2020 | Resolved |
| rcra | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | Jul 11, 2019 | Jan 7, 2020 | Resolved |
| rcra | Standards Applicable to Generators of HW: Transboundary Movements of Hazardous Waste for Recovery or Disposal | Jul 11, 2019 | Jan 7, 2020 | Resolved |
| rcra | ID and Listing of HW: General | Jul 11, 2019 | Jan 7, 2020 | Resolved |
| rcra | Standards Applicable to Generators of HW: Manifest Requirements Applicable to Small and Large Quantity Generators | Jul 11, 2019 | Jan 7, 2020 | Resolved |
| caa | FRV | Nov 8, 2017 | — | Open |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: General Facility Standards | Apr 28, 2015 | Jun 3, 2015 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Aug 15, 2011 | Feb 13, 2012 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Aug 15, 2011 | Feb 13, 2012 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Aug 15, 2011 | Apr 26, 2012 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Jun 9, 2010 | Aug 27, 2010 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Jun 9, 2010 | Aug 27, 2010 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Dec 10, 2007 | Feb 21, 2008 | Resolved |
| rcra | Standards Applicable to Generators of HW: Manifest Requirements Applicable to Small and Large Quantity Generators | May 3, 2002 | Apr 23, 2003 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | May 3, 2002 | Apr 23, 2003 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Feb 22, 2001 | Mar 16, 2001 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Jul 13, 1999 | Sep 13, 1999 | Resolved |
| rcra | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | Jul 13, 1999 | Sep 13, 1999 | 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.
Notice of Violation
Clean Air Act
· Case 3602996281 · Feb 15, 2022
WARNING LETTER
RCRA (Hazardous Waste)
· Case RCRA-SCR000007245-001 · Aug 12, 2019
Notice of Violation
Clean Air Act
· Case 3601269742 · Nov 8, 2017
WARNING LETTER
RCRA (Hazardous Waste)
· Case RCRA-SCR000007245-000 · Aug 2, 1999
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