2. Primary microplastics enter the environment at less than 5mm in size. Secondary microplastics are formed when macroplastics break down into tiny particles.
3. Eunomia (2016) Plastics in the Marine Environment
5. This should identify how non-conformance happened; what the underlying cause was; the estimated scale of the (potential) spill; what steps are suggested to remediate; what steps are suggested to prevent recurrence; and the responsibility, resources and timescales to implement these steps.