![]() ![]() For general risk assessment questions, separate from the RSLs, please use the General Risk Assessment Contact page.ĭefault Exposure Parameters and Definitionsĭescriptions of annotations and abbreviations used in RSL tables and calculator output Annotation/AbbreviationĬhemical Abstracts Services Registry NumberĬAS is a unique numerical identifier assigned to every chemical substance described in the open scientific literature, including organic and inorganic compounds.Ĭhronic Inhalation Reference Concentration (mg/m 3).For RSL questions please use the RSL Contact Us page.If you wish to receive notifications when RSLs are updated, use the Signup Form to learn more.These exposure pathways can be considered on a site-specific basis in the Calculator. The download tables do not include the ingestion of fish exposure pathway, the outdoor worker and the indoor worker exposure to soil exposure pathway that are presented in the User's Guide. ![]() The tables contain both SL calculations and the toxicity values that were used. These tables are considered ready for use. Use the tables appropriate for your region. All tables are presented with target cancer risk (TR) of 1E-06, however, tables are presented with target hazard quotients (THQ) of 1.0 and 0.1. The screening level (SL) tables are available for download in Excel and PDF formats. The RSL and RML default values are available in the Apple Store and the Google Play Store for use on mobile devices. ![]() For assistance/questions please use the Regional Screening Levels (RSLs) contact us page. ![]()
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