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The California Air Resources Board (CARB) has released updated health tables for the Hot Spots Analysis and Reporting Program (HARP) Air Dispersion Modeling and Risk Tool (ADMRT), Risk Assessment Standalone Tool (RAST) and Emission Inventory Module (EIM).
The new REL values are as follows
| Substance |
Pollutant ID |
Acute REL (μg/m3) |
Chronic REL (μg/m3) |
8-hour REL (μg/m3) |
| Aliphatic polyisocyanate |
160994683 |
4.5 |
4.0 x 10-1
|
8.0 x 10-1
|
| Hexamethylene-1,6-diisocyanate homopolymer |
3779633 |
4.5 |
4.0 x 10-1
|
8.0 x 10-1
|
| Hexane, 1,6-diisocyanato-, homopolymer |
28182812 |
4.5 |
4.0 x 10-1
|
8.0 x 10-1
|
| Hexane, 1,6-diisocyanato-, homopolymer, polyethylene-polypropylene glycol monobutyl ether-blocked |
125252473 |
4.5 |
4.0 x 10-1
|
8.0 x 10-1
|
To get the new health database, select the “Help > Check for Updates” feature in the main menu of each program. This feature will automatically download and update the health databases. Once downloaded, restart each program to use the new health databases.
If you have questions or concerns please mail HARP staff at harp@arb.ca.gov.
Other Updates
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