- Board Adopted First-Notice Proposal to Add Indoor Inhalation Pathway to the
Tiered Approach to Corrective Action Objectives (TACO)
The Board, on April 19, 2012, adopted a first-notice opinion and order in the rulemaking
docketed as Tiered Approach to Corrective Action Objectives (TACO) (Indoor
Inhalation): Amendments to 35 Ill.
- To protect building occupants, this
exposure route addresses the potential for vapors to migrate into buildings from
underlying volatile chemicals in soil or groundwater, a process commonly known as
“vapor intrusion” or “VI.”
The Board also proposes adding 13 chemicals to the TACO tables based upon the
Board’s pending rulemaking on groundwater quality standards, ...