Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
KNAPP POLLY PIG INC
1209 HARDY ST, HOUSTON, TX, 77020
Parent company: NA
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | 4,4'-Methylenedi(phenyl isocyanate) | Diisocyanates | Total |
|---|---|---|---|
| 1997 | — | 5 | 5 |
| 1996 | — | 5 | 5 |
| 1995 | — | 5 | 5 |
| 1994 | 5 | — | 5 |
| 1993 | 5 | — | 5 |
| 1991 | 5 | — | 5 |