A collection of tables of soil and groundwater quality guidelines from around the world:
CLEA UK - Contaminated Land Exposure Assessment used in the United Kingdom
UK historical guidance: CLEA 2002 (superseded in 12/2006 by CLEA UK), ICRCL (withdrawn 01/2003) and "Kelly" guideline values
Dutch intervention values
French guideline values used for contaminated land management
Swedish environmental quality criteria for contaminated land
Australian guideline on the investigation levels for soil and groundwater
Jordplan Sjælland standards used in Zealand and surrounding islands of Denmark
USA CERCLA/Superfund Act of 1980