All data shown are preliminary until validated every 90 days.
Benzene is a chemical that is a colorless or light-yellow liquid at room temperature. It has a sweet odor and is highly flammable. Benzene evaporates into the air very quickly. Its vapor is heavier than air and may sink into low-lying areas.
The AEGL-1 value for 4-hour exposure of 18 ppm (18,000 ppb) was selected by APCD as the notification threshold value for benzene.
Hydrogen Sulfide a chemical compound with the formula H2S. It is a colorless chalcogen-hydride gas, and is poisonous, corrosive, and flammable, with trace amounts in ambient atmosphere having a characteristic foul odor of rotten eggs.
The Phillips 66 Denver Terminal facility does not store nor emit this compound.
The AEGL-1 value for 4-hour exposure of 0.36 ppm (360 ppb) was selected by APCD as the notification threshold value for H2S.
Hydrogen cyanide is a chemical compound with the formula HCN. HCN has a faint bitter almond-like odor that some people are unable to detect. Exposure to HCN can harm the brain, heart, blood vessels, and lungs.
The Phillips 66 Denver Terminal facility does not store nor emit this compound.
The AEGL-1 value for 4-hour exposure of 1.3 ppm (1300 ppb) was selected by APCD as the notification threshold value for HCN.
- MDL = Minimum Detection Limit
- AEGL = Acute Exposure Guideline Level
- INV= Value was invalidated due to automated QA/QC checks
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