radon

Why the Fuss About VI When We Have Such a Radon Gas Problem?

vapor intrusion / By

Ten years ago this month EPA issued is draft Vapor Intrusion Guidance that altered the approach to site remediation. The guidance was issued following a couple of high profile sites where relatively low concentrations of volatile organic compounds in groundwater had apparently impacted indoor air in a large number of residences. These cases suggested the […]

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Freddie Mac Changes Radon and ACM Requirements for Multi-Family Phase 1 Reports

Environmental Due Diligence / By

Earlier this year, Freddie Mac recently clarified its environmental requirements for phase 1 reports issued for multi-family loans. The two key changes involve radon and asbestos. Excerpts for these two issues are below. The full text of the revisions are available from the link at the bottom of this post. Radon- Freddie Mac now requires

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