Choose from 5 options:
that applies to the environment hazard characteristic of an industrial chemical has the meaning given by clause 4 of Schedule 1. (General Rules)
Environment hazard characteristics are split up into hazard bands. Hazard characteristics of most concern are in hazard band D, while those of lower concern are in hazard band A.
In step 5.4 you'll find the following information:
toxic to any aquatic life