Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
CHESTER INC
STATE RD 43 & COUNTY RD 900 NORTH, BROOKSTON, IN, 47923
Parent company: NA
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 | Phosphoric acid | Ammonia | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Ammonium nitrate (solution) | Total (lbs) | |
| 1991 | 64,000 | 25,000 | 3,000 | 750 | 92,750 | |
| 1990 | 83,218 | 35,346 | 3,794 | 1,245 | 123,603 | |
| 1989 | 113,673 | 39,058 | 4,308 | 3,259 | 160,298 | |
| 1988 | 106,280 | 39,764 | — | 3,830 | 149,874 | |
| 1987 | 80,890 | — | — | — | 80,890 | |
▎ 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.