Cal/Ecotox database

Cal/EPA Library - The Cal/EPA Library contains journals and reference materials that pertain to air pollution, solid waste, and hazardous waste management.

Exposure Factors Handbook, USEPA

IRIS database, USEPA

ITER database, International Toxicity Estimates for Risk

Johnson and Ettinger Model for Subsurface Vapor Intrusion into Buildings

MCLs, Action Levels, and Unregulated Chemicals Requiring Monitoring - California Department of Health Services

NEMI (National Environmental Methods Index), a national clearinghouse for analytical methods
http://www.nemi.gov/servlet/page?_
pageid=179&_dad=portal30
&_schema=PORTAL30

On-line calculator for conversion

Soil Screening Guidance, USEPA

Sites for finding analytical methods and detection limits for chemical contaminants
http://www.epa.gov/epahome/index/