Air monitoring screening levels were approved by the Department of Toxic Substance Control (DTSC) and reviewed by South Coast Air Quality Management District (SCAQMD). Screening levels take several factors into account, including the type of substances that may be present, the concentration in the air and how long the exposure lasts. The levels are set to protect potentially sensitive members of the community (e.g., children, pregnant women, those with health concerns) and are for both short-term and long-term exposures, such as daily exposure over a lifetime.
While remedial fieldwork is paused, if the lab analysis results exceed health-protective screening levels for VOCs, we will:
- Determine the source and necessary mitigation actions.
- Share with DTSC and the community via this website.
Example of Health Protective Screening Levels Used for Monitoring Benzene