May 16, 2013 - The Board, on May 16, 2013, adopted amendments to the Tiered Approach to Corrective Action Objectives (TACO) rules (35 Ill. Adm. Code 742). The amendments include the addition of a new exposure route under TACO: the indoor inhalation exposure route. To protect building occupants, this exposure route addresses the potential for vapors to migrate into buildings from subsurface volatile chemical contamination, a process commonly known as “vapor intrusion.”
Board Adopts Final Amendments Adding Indoor Inhalation Pathway to TACO
The Board, on May 16, 2013, adopted amendments to the Tiered Approach to CorrectiveAction Objectives (TACO) rules (35 Ill.
The final amendments also reflect the addition of 13 chemicals to the TACO
tables, update physical and chemical parameters, and revise toxicity values.
First, the Tier 1 and Tier 2 remediation objectives
(ROs) for the indoor inhalation exposure route apply only when the existing or potentialbuilding at issue has a full concrete slab-on-grade or a full concrete basement floor andwalls.
“School
administrator” is defined as “the school’s principal, or similar administrator responsiblefor t...
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