Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
LOCKFORMER CO
711 OGDEN AVE, LISLE, IL, 605321399
Parent company: MESTEK INC
Carcinogen
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) 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.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Trichloroethylene | Xylene (mixed isomers) | Chromium | Nickel | Total (lbs) | |
| 2000 | 10,940 | — | 10 | — | 10,950 | |
| 1999 | 10,900 | — | 15 | 13 | 10,928 | |
| 1998 | 20,000 | — | 15 | 13 | 20,028 | |
| 1997 | 24,750 | 10,340 | 15 | 13 | 35,118 | |
| 1996 | 20,344 | — | 15 | 12 | 20,371 | |
| 1995 | — | — | 16 | 13 | 29 | |
| 1994 | 26,120 | — | 13 | 10 | 26,143 | |
| 1993 | 22,964 | — | — | — | 22,964 | |
| 1992 | 39,485 | — | — | — | 39,485 | |
| 1991 | 39,960 | — | — | — | 39,960 | |
| 1990 | 47,535 | — | — | — | 47,535 | |
| 1989 | 47,933 | — | — | — | 47,933 | |
| 1988 | 46,640 | — | — | — | 46,640 | |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.