Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
TRI-STAR REFACTORIES DIV OF NARCO
8361 BROADWELL RD, CINCINNATI, OH, 45244
Parent company: NORTH AMERICAN REFRACTORIES CO
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 | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Aluminum oxide (fibrous forms) | Phosphoric acid | Total (lbs) | ||
| 1992 | 750 | — | 260 | 1,010 | ||
| 1991 | 255 | — | 250 | 505 | ||
| 1990 | 750 | — | 260 | 1,010 | ||
| 1989 | 750 | — | — | 750 | ||
| 1988 | — | 1,750 | — | 1,750 | ||
| 1987 | 750 | — | — | 750 | ||
▎ 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.