Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
DOW CHEMICAL USAHANGING ROCK PLANT
925 COUNTY ROAD 1A, IRONTON, OH, 45638
Parent company: THE DOW CHEMICAL CO
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 | 1-Chloro-1,1-difluoroethane (HCFC-142b) | Chloroethane | Styrene | Acrylonitrile | Ethylbenzene | Total |
|---|---|---|---|---|---|---|
| 2009 | 123,858 | — | — | — | — | 124,255 |
| 2008 | 594,652 | — | 285 | — | 89 | 595,335 |
| 2007 | 630,637 | — | 1,740 | 486 | 450 | 633,537 |
| 2006 | 694,762 | — | 1,726 | 486 | 458 | 697,694 |
| 2005 | 748,028 | — | 1,696 | 485 | 456 | 750,833 |
| 2004 | 660,695 | — | 1,874 | 484 | 424 | 663,782 |
| 2003 | 631,330 | — | 1,638 | 499 | 460 | 634,108 |
| 2002 | 635,900 | — | 1,512 | 504 | 462 | 638,378 |
| 2001 | 638,281 | 90,616 | 4,426 | 452 | 662 | 734,437 |
| 2000 | 633,430 | 316,250 | 5,974 | 514 | 516 | 956,684 |
| 1999 | 492,738 | 280,499 | 5,376 | 541 | 526 | 779,687 |
| 1998 | 491,984 | 293,765 | 5,403 | 591 | 1,093 | 792,845 |
| 1997 | 732,317 | 465,675 | 4,778 | 476 | 534 | 1,203,794 |
| 1996 | 703,000 | 445,200 | 7,134 | 838 | 536 | 1,156,733 |
| 1995 | 677,700 | 480,200 | 6,090 | 420 | 490 | 1,167,610 |
| 1994 | 638,000 | 500,000 | 6,981 | 1,951 | 1,281 | 1,148,568 |
| 1993 | — | 480,000 | 8,401 | 3,901 | 1,601 | 496,026 |
| 1992 | — | 400,000 | 10,001 | 8,631 | 2,821 | 423,698 |
| 1991 | — | 330,000 | 9,401 | 8,631 | 2,821 | 381,863 |
| 1990 | — | 465,000 | 24,450 | 3,746 | 1,050 | 494,396 |
| 1989 | — | 494,000 | 25,873 | 4,598 | 1,117 | 525,788 |
| 1988 | — | 522,000 | 28,134 | 3,446 | — | 553,820 |
| 1987 | — | — | — | — | 3,890 | 4,140 |