2014 CPEO Brownfields List Archive

From: Lenny Siegel <lsiegel@cpeo.org>
Date: Thu, 26 Jun 2014 11:42:45 -0700 (PDT)
Reply: cpeo-brownfields
Subject: [CPEO-BIF] Short-term exposure to TCE vapor intrusion
The Complexity Associated with Setting Non-cancer Indoor Air Remediation Goals for Trichloroethylene Based on Short-term Exposure at Groundwater Contamination Sites

by William Walsh
Pepper Hamilton LLP Environmental Client Alert
June 24, 2014

Over the last few years, there has been increasing consideration of vapor intrusion in groundwater investigations, groundwater remedy selection, periodic reviews of the continued safety of already implemented groundwater remedies, environmental due diligence, and property and personal injury litigation. The frequency and complexity of vapor intrusion evaluations and re-evaluations is driven by new, more explicit, vapor intrusion guidance documents and regulations promulgated by the Environmental Protection Agency (EPA) and state regulators, voluntary industry standards (such as the ASTM International's E1527-13, Standard Practice for Phase I Environmental Assessments (December 30, 2013) (ASTM VI Standard)), the EPA’s controversial adoption of a novel, much more stringent non-cancer toxicity factor for trichloroethylene (TCE) in 2011, and the concerns of local residents. This article focuses particularly on the problems that plumes of TCE (a common groundwater contaminant) present to regulators and potentially responsible parties (whether private companies or governmental responsible parties) attempting to address vapor intrusion, and suggests some prudent actions that the private sector might consider.


For the entire article, see


Lenny Siegel
Executive Director, Center for Public Environmental Oversight
a project of the Pacific Studies Center
278-A Hope St., Mountain View, CA 94041
Voice: 650/961-8918 or 650/969-1545
Fax: 650/961-8918

Brownfields mailing list

  Prev by Date: Re: [CPEO-BIF] Vapor monitoring access issues in Fort Smith, Arkansas
Next by Date: [CPEO-BIF] "Sunnyvale[California]'s newest neighborhood park
  Prev by Thread: Re: [CPEO-BIF] Vapor monitoring access issues in Fort Smith, Arkansas
Next by Thread: [CPEO-BIF] "Sunnyvale[California]'s newest neighborhood park

CPEO Lists
Author Index
Date Index
Thread Index