Air Monitoring Data and Site Records: What Happened After All American Asphalt Halted Production?
Negotiations between the City of Irvine and All American Asphalt culminated in an extraordinary municipal real estate transaction. The city paid $285 million to buy out the plant, financed partly through a concurrent land deal with the Irvine Company, which contributed roughly 475 acres of surrounding hillside open space.
| Monitoring Metric | Active Operations (2019, 2022) | Post-Shutdown Reality (2023, 2026) |
|---|---|---|
| Odor Complaints Logged | Over 350 verified calls per year | Near zero attributable complaints |
| Ambient Benzene Readings | Periodic spikes between 0.8, 2.3 ppb near perimeter | Stabilized at regional background (0.1, 0.3 ppb) |
| Particulate Matter (PM2.5) | Intermittent plant fugitive dust elevated local spikes | Correlates strictly with traffic and wildfire activity |
| Site Status | Heavy industrial manufacturing & hauling | Dismantled; Phase II environmental remediation |
The deal immediately silenced heavy machinery. Production ceased permanently, the company withdrew its air district permit renewals, and municipal crews secured the perimeter for site remediation work.
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