|
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 the Emission Inventory Module (EIM). These updates contain
new cancer unit risk, inhalation slope, and oral slope factors for
tertiary-butyl acetate (540-88-5), adopted by the Office of Environmental
Health Hazard Assessment (OEHHA) on August 16, 2018.
Please note that although OEHHA has adopted an oral cancer
potency value for tertiary-butyl acetate, its chemical/biological properties do
not fit the multipathway scheme. Therefore, non-inhalation pathway risks
calculated from this value will be zero because the transfer factors are set to
zero. Please contact OEHHA for more information.
To get the new health databases, click on the “Help >
Check for Updates” feature in the main menu of each program. This feature
will automatically download and update the health database. You may need
to restart each program to use the new database. The health database can
also be downloaded and updated manually by clicking on the “ADMRT Health Data”
and the “EIM Health Data” buttons below. Please read the readme file
contained in the zip file for instructions on how to install the new health
databases.
For your convenience, the health values can be exported
directly from HARP (Open a project > Tools > View Health Database > Export to
CSV). The CSV file can be opened using Excel.
Other Updates
The Consolidated Table of OEHHA/CARB Approved Risk Assessment Health Values has also been updated.
|
