Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MATERIALS MARKETING OPS
201 W HUMBLE ST, SAN ANTONIO, TX, 78225
Parent company: MATERIALS MARKETING CORP
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 | Toluene | Xylene (mixed isomers) | Total (lbs) | |||
| 1993 | — | 13,000 | 13,000 | |||
| 1992 | 30,000 | — | 30,000 | |||
| 1991 | 22,000 | 13,000 | 35,000 | |||
| 1990 | 21,000 | 1,200 | 22,200 | |||
| 1989 | 39,000 | 25,000 | 64,000 | |||
| 1988 | — | 27,000 | 27,000 | |||
| 1987 | 21,000 | — | 21,000 | |||
▎ 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.