Carol S Wood Contact woodcs@ornl.gov All Publications Hydrogen Selenide. Acute Exposure Guideline Levels ... Provisional Advisory Level Development for Ricin... Data Source Summary Documents (DSSDs) Derived for Updated Drinking Water Standards and Health Advisories (DWSHA) Tables... Selected Monoisocyanates, Acute Exposure Guideline Levels... Nitric Acid. Acute Exposure Guideline Levels.... Provisional Advisory Level Development for Fentanyl... Trimethylbenzenes. Acute Exposure Guideline Levels.... Overview of the Standing Operating Procedures (SOP) for the Development of Provisional Advisory Levels (PALs)... Health-based Provisional Advisory Levels (PALs) for Homeland Security... Key Links ORCID Organizations Biological and Environmental Systems Science Directorate Environmental Sciences Division Biodiversity and Sustainable Systems Section Environmental Risk and Energy Analysis Group