Lhoist Na of Arizona-Apex Plant (part) – Emissions Trend
Las Vegas, NV · 2019–2023 · Parent: Lhoist N.a.
This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for Lhoist Na of Arizona-Apex Plant (part), 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 30.4K in 2019 and closed at 30.8K in 2023 – a flat trend of 1.1% 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 Vanadium compounds at 24.6K, followed by Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) at 22.4K.
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 nonmetallic mineral product facility.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Lhoist Na of Arizona-Apex Plant (part)'s total reported releases rose from 9.0 thousand lb in 2022 to 30.8 thousand lb in 2023, based on EPA TRI filings.
- Lhoist Na of Arizona-Apex Plant (part)'s land releases rose from 9.0 thousand lb in 2022 to 30.7 thousand lb in 2023, based on EPA TRI filings.
- Lhoist Na of Arizona-Apex Plant (part)'s air releases rose from 27 lb in 2022 to 41 lb in 2023, based on EPA TRI filings.
- Lhoist Na of Arizona-Apex Plant (part)'s chemicals reported rose from 5 in 2022 to 6 in 2023, based on EPA TRI filings.
Total Releases by Category
Year-over-Year Comparison
| Year | Total | Chemicals | YoY Change |
|---|---|---|---|
| 2019 | 30.4K lbs | 5 | - |
| 2020 | 16.9K lbs | 5 | -44.5% |
| 2021 | 11.1K lbs | 5 | -34.5% |
| 2022 | 9.0K lbs | 5 | -18.5% |
| 2023 | 30.8K lbs | 6 | +240.8% |
Top Chemicals by Year
| Chemical | 2019 | 2020 | 2021 | 2022 | 2023 | Total |
|---|---|---|---|---|---|---|
| Vanadium compounds | 4.2K | 2.1K | 6.0K | 3.9K | 8.4K | 24.6K |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 22.4K | - | - | - | - | 22.4K |
| Lead And Lead Compounds | - | 12.4K | - | 3.0K | - | 15.4K |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | - | - | - | - | 13.8K | 13.8K |
| Lead compounds | 3.8K | - | 2.1K | - | 4.7K | 10.6K |
| Nickel compounds | - | - | 3.0K | - | 3.9K | 6.9K |
| Nickel And Nickel Compounds | - | 2.4K | - | 2.0K | - | 4.4K |
| Mercury | - | 62 | 21 | 21 | 7 | 111 |
| Mercury compounds | 38 | - | - | - | - | 38 |
| Dioxin and dioxin-like compounds | 0 | 0 | 0 | 0 | 0 | 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
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Read our methodology - how this data is sourced, computed, and verified.