Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
SEM PRODUCTS INC
1685 OVERVIEW DR, ROCK HILL, SC, 29730
Parent company: PPG INDUSTRIES INC
Carcinogen
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| Year | Toluene | Xylene (mixed isomers) | Methyl isobutyl ketone | Certain glycol ethers | Methanol | Total |
|---|---|---|---|---|---|---|
| 2024 | 10,441 | 1,837 | 1,309 | 760 | 511 | 14,858 |
| 2023 | 11,384 | 2,206 | 1,709 | 818 | 519 | 17,034 |
| 2022 | 13,366 | 2,196 | 1,099 | 774 | 683 | 18,536 |
| 2021 | 7,439 | 3,065 | — | — | — | 10,504 |
| 2020 | 6,090 | 1,714 | — | — | — | 7,804 |
| 2019 | 6,090 | 1,714 | — | — | — | 7,804 |
| 2018 | 7,023 | 272 | 391 | — | — | 7,686 |
| 2017 | 7,050 | 1,584 | 408 | — | — | 9,042 |
| 2016 | 7,545 | 2,473 | 743 | — | — | 10,761 |
| 2015 | 8,470 | 2,302 | 692 | — | — | 11,464 |
| 2014 | 8,270 | 1,858 | 755 | — | — | 10,883 |
| 2013 | 7,975 | 2,014 | 529 | — | — | 10,518 |
| 2012 | 8,012 | 2,191 | 755 | — | — | 10,958 |
| 2011 | 8,678 | 2,332 | 755 | — | — | 11,765 |
| 2010 | 8,071 | 2,188 | 760 | — | — | 11,019 |
| 2009 | 5,215 | 1,570 | — | — | — | 6,785 |
| 2006 | — | — | — | — | — | 15 |
| 2005 | — | — | — | — | — | 15 |
| 2004 | — | — | — | — | — | 15 |
| 2003 | — | — | — | — | — | 260 |
| 2002 | — | — | — | — | — | 15 |
| 2001 | — | — | — | — | — | 15 |
| 2000 | — | — | — | — | — | 10 |
| 1999 | — | — | — | — | — | 10 |