Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HES INTERNATIONAL INC
1851 MERRIAM LN, KANSAS CITY, KS, 66106
Parent company: OAK INDUSTRIES INC
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 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Ammonia | Total (lbs) | |||
| 1993 | 500 | 250 | 750 | |||
| 1992 | — | 1,051 | 1,051 | |||
| 1991 | — | 1,363 | 1,363 | |||
| 1990 | 1,550 | — | 1,550 | |||
| 1989 | 4,180 | 305 | 4,485 | |||
| 1988 | 3,772 | — | 3,772 | |||
| 1987 | 3,267 | — | 3,267 | |||
▎ 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.