ISO INTERNATIONAL STANDARD 19204 First edition 2017-02 Soil quality Procedure for site- specific ecological risk assessment of soil contamination (soil quality TRIAD approach) Qualité du sol - Procédure d'évaluation des risques écologiques spécifiques au site de la contamination des sols (approche TRIADE de la qualité du sol) Reference number IS0 19204:2017(E) International Organization for Standardization @ IS0 2017 e=ZHEJIANG INSTOF STANDARDIZATION C1 5956617 nitted without license from IHS IS0 19204:2017(E) COPYRIGHT PROTECTED DOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 · CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Internationai ibrg DrganizationforStandardization Licensee-ZHEJIANG INST OF STANDARDIZzRoISQ7 - All rights reserved Not for Resale, 2017/5/11 02:40:21 networking permited withoutlicense from IHS IS0 19204:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Process overview. ..6 5 Uncertainty and weight of evidence .1 6 Soil quality TRIAD performance 1 6.1 First step: Objective of the investigation (formulating the problem and decision regarding the need of a site-specific risk assessment) .7 6.1.1 General approach . .7 6.1.2 Decision ..8 6.1.3 Stakeholders involved in an ecological risk assessment .8 6.1.4 Independent quality control. .9 6.2 Second step: Basic considerations. 9 6.2.1 General approach ..9 6.2.2 Assessmentcriteria .10 6.3 Third step: Practical performance of the soil quality TRIAD .11 6.3.1 General .11 6.3.2 Soil quality TRIAD tiers .11 6.3.3 Soil quality TRIAD lines of evidence ..12 6.3.4 Measurement parameters .15 6.4 Fourth step: Assessments at the different tiers: scaling, weighting and integrating results ..16 6.4.1 General 16 6.4.2 Quantificationofresultsfromterrestrialtests .16 6.4.3 Scalinginpractise. ..16 6.4.4 Weighting ..17 6.4.5 Integration of results. ..17 6.5 Fifth step: Decision on how to proceed ..18 7 Reporting ..18 Annex A (informative) Bioindicators of effect and accumulation - Additional tools for site specific ecological risk assessment. 20 Bibliography .21 ii nSee=ZHEJIANG INST OF STANDARDIZATION C15956617 vithout license from IHS