Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PARKER HANNIFIN CORP NICHOLS AIRCRAFT DIV
48 WOERD AVE, PO BOX 9115, WALTHAM, MA, 022549115
Parent company: PARKER HANNIFIN CORP
Carcinogen
— 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 | Freon 113 (CFC-113) | Dichloromethane | Total (lbs) | |||
| 1992 | 20,000 | — | 20,000 | |||
| 1991 | 25,000 | 9,200 | 34,200 | |||
| 1990 | 21,000 | 6,300 | 27,300 | |||
| 1989 | 35,075 | 8,974 | 44,049 | |||
| 1988 | 48,000 | 13,000 | 61,000 | |||
▎ 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.