On July 9, 2013, the Indiana Department of Environmental Management (IDEM) announced that it will allow the use of new screening levels for arsenic at sites undergoing investigation or remediation.  IDEM’s levels are derived from United States Environmental Protection Agency’s recent revisions to its direct contact screening levels for arsenic.  The table below provides IDEM’s current and revised levels:

Click here to see table.

IDEM’s new levels are labeled as “Optional Levels” until the new levels become final.  This is expected to occur in January, 2014.