GRACE -PASADENA CATALYST SITE — Emissions Trend

Pasadena, TX · 2019–2023 · Parent: W R GRACE & CO

This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for GRACE -PASADENA CATALYST SITE, spanning 2019–2023. Each annual total aggregates on-site air emissions, surface-water discharges, land disposal, and off-site transfers reported by the facility under EPCRA Section 313, which requires disclosure whenever a listed chemical is manufactured, processed, or otherwise used above threshold quantities.

Reported releases opened at 58.9K in 2019 and closed at 61.5K in 2023 — a stable of +4.3% over the window. The chart below stacks the four TRI release media (air, water, land, off-site) and overlays the yearly total. The top contributor by cumulative mass is Toluene at 120.2K, followed by n-Hexane at 82.1K.

Because TRI figures are estimated, not metered, year-over-year deltas can reflect methodology revisions, ownership changes, or shifts in what a facility classifies as reportable — not only physical emission changes. Treat the trajectory as a disclosure record, and cross-reference with the EPA Enforcement and Compliance History Online (ECHO) system for the fuller regulatory picture on this chemicals facility.

Overall Trend
→ Stable (+4.3%)
2019 Total
58.9K lbs
2023 Total
61.5K lbs

Total Releases by Category

Air
Water
Land
Offsite Transfer
012.3K24.6K36.9K49.2K61.5K 20192020202120222023 Pounds Released

Year-over-Year Comparison

Year Total Chemicals YoY Change
2019 58.9K lbs 11
2020 57.4K lbs 11 -2.5%
2021 59.3K lbs 11 +3.3%
2022 59.1K lbs 11 -0.4%
2023 61.5K lbs 11 +4.0%

Top Chemicals by Year

Chemical 20192020202120222023 Total
Toluene 23.9K 22.2K 24.4K 23.9K 25.8K 120.2K
n-Hexane 15.8K 16.6K 16.2K 15.7K 17.8K 82.1K
Titanium tetrachloride 10.4K 10.4K 10.6K 10.8K 10.8K 53.0K
Ethylene glycol 4.2K 3.1K 3.1K 3.1K 3.1K 16.8K
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 1.4K 1.7K 1.7K 2.1K 1.5K 8.6K
Dibutyl phthalate 1.5K 1.6K 1.6K 1.7K 778 7.2K
Propylene 999 1.0K 1.0K 1.1K 1.0K 5.2K
Epichlorohydrin 658 674 678 666 628 3.3K
Phthalic anhydride 13 13
Di(2-ethylhexyl) phthalate 0
Vanadium compounds 0

About This Data

Trend data is sourced from the EPA Toxic Release Inventory (TRI). Facilities report annually. Release quantities are self-reported estimates. Year-over-year changes may reflect changes in production, pollution control measures, reporting methodology, or chemical thresholds.

A decrease in reported releases does not necessarily indicate improved environmental performance, as it may reflect production cutbacks, facility closures, or changes in reporting requirements. Similarly, increases may reflect expanded production rather than degraded environmental practices.

Frequently Asked Questions

Is GRACE -PASADENA CATALYST SITE getting cleaner or dirtier?
Based on EPA TRI data from 2019–2023, GRACE -PASADENA CATALYST SITE's total toxic releases have remained relatively stable.
What time period does this trend data cover?
This page shows 5 years of EPA Toxic Release Inventory data from 2019–2023. Release quantities are self-reported estimates filed annually by the facility.