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This page contains the background of the national environmental standards for regional waste and contaminated land.

The Ministry for the Environment's discussion document for the "Proposed National Environmental Standard for Assessming and Managing Contaminants in Soil" can be found here.

The "Draft Toxicological Intake Values for Priority Contaminants in Soil" document can be found here.

The "Draft Methodology for Deriving Soil Guideline Values Protective of Human Health" document can be found here.