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T1 Suggestions for the Development of a Hazard Evaluation Procedure for Potentially Toxic Chemicals: MARC Report Number 3
A1 United Nations Environment Programme, 
A2 Harriss, Robert C.
K1 chemical
K1 mercury contamination
K1 radioactive contamination
K1 environmental impact assessment
K1 environmental monitoring
K1 toxic substance
K1 environmental performance
YR 1976
FD 1976
LK https://wedocs.unep.org/handle/20.500.11822/27971
UL https://wedocs.unep.org/handle/20.500.11822/27971
NO This document presents initial thinking on the development of a methodology designed to identify those chemicals being released into the environment which are likely to cause undue perturbations in essential biological processes. At present it is difficult, time-consuming and costly to assess the relative advantages and disadvantages resulting from the use of a particular chemical. An assessment of environmental costs related to the use of a particular substance requires information on the magnitude of its impact in relation to environmental exposure, and the value attached by society to the environmental resources which suffer negative effects.
DS UN Environment Document Repository
RD Sep 16, 2026