CONSEQUENCES OF CONFUSING AND CONFLICTING VAPOR INTRUSION STANDARDS

摘要

1. 12 years after Its 2002 draft guidance EPA still has not finalized a Ⅵ guidance 2. After being strongly criticized by its Inspector General in 2009 EPA: 2.1 Issues wholly new draft Ⅵ guidance, which it has yet to finalize 2.2 Now requires Ⅵ be assessed in five-year reviews 2.3 Orders regions to identify potential Ⅵ sites 2.4 Pressures states to do the same.