Calportland Oro Grande Plant – Emissions Trend
Oro Grande, CA · 2019–2023 · Parent: Taiheiyo Cement USA Inc
This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for Calportland Oro Grande Plant, 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 188 in 2019 and closed at 259 in 2023 – a increase of 37.4% 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 Lead And Lead Compounds at 313, followed by Lead compounds at 268.
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
- Calportland Oro Grande Plant's total reported releases rose from 238 lb in 2022 to 259 lb in 2023, based on EPA TRI filings.
- Calportland Oro Grande Plant's air releases rose from 238 lb in 2022 to 259 lb in 2023, based on EPA TRI filings.
Total Releases by Category
Year-over-Year Comparison
| Year | Total | Chemicals | YoY Change |
|---|---|---|---|
| 2019 | 188 lbs | 4 | - |
| 2020 | 319 lbs | 4 | +69.5% |
| 2021 | 227 lbs | 4 | -28.8% |
| 2022 | 238 lbs | 4 | +5.0% |
| 2023 | 259 lbs | 4 | +8.5% |
Top Chemicals by Year
| Chemical | 2019 | 2020 | 2021 | 2022 | 2023 | Total |
|---|---|---|---|---|---|---|
| Lead And Lead Compounds | - | 219 | 94 | - | - | 313 |
| Lead compounds | 76 | - | - | 99 | 93 | 268 |
| Mercury compounds | 67 | - | - | 85 | 72 | 224 |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 45 | 20 | - | 54 | 94 | 213 |
| Mercury And Mercury Compounds | - | 80 | 76 | - | - | 156 |
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | - | - | 57 | - | - | 57 |
| 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.