When host country regulations differ from the levels and
measures presented in the EHS Guidelines, projects are
expected to achieve whichever is more stringent. If less
stringent levels or measures than those provided in these EHS
Guidelines are appropriate, in view of specific project
circumstances, a full and detailed justification for any proposed
alternatives is needed as part of the site-specific environmental
assessment. This justification should demonstrate that the
choice for any alternate performance levels is protective of
human health and the environment