1. California Environmental Protection Agency (CEPA) 2012 http://www.waterboards.ca.gov/ust/lt_cls_plcy.shtml
2. Eklund , B. Folkes , D. Kabel , J. Farnum , R. 2007 10 14
3. Lahvis , M. Hers , I. Davis , R. Wright , J. DeVaull , G. 2012
4. Editor's perspective-Vapor intrusion issues challenged by an ever-changing regulatory and technical landscape;Simon;Remediation,2011