Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KOCH MATERIALS CO MASON STREET
4900 S MASON AVE, CHICAGO, IL, 606381415
Parent company: KOCH INDUSTRIES INC
Carcinogen
PBT
— 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 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Polycyclic aromatic compounds | Total (lbs) | |||
| 2000 | — | 4 | 4 | |||
| 1994 | 1,000 | — | 1,000 | |||
| 1993 | 1,005 | — | 1,005 | |||
| 1992 | 1,000 | — | 1,000 | |||
| 1991 | 1,000 | — | 1,000 | |||
▎ 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.