Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
US PRECISION LENS
3997 MCMANN RD, CINCINNATI, OH, 45245
Parent company: CORNING 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 | Methyl ethyl ketone | Freon 113 (CFC-113) | Total (lbs) | |||
| 1990 | 3,830 | — | 3,830 | |||
| 1989 | 23,795 | 11,510 | 35,305 | |||
| 1988 | 13,861 | — | 13,861 | |||
| 1987 | 11,729 | — | 11,729 | |||
▎ 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.