ANNEX II U.K. PROCEDURES AND MINIMUM ELEMENTS TO BE ADDRESSED IN AN ENVIRONMENTAL RISK ASSESSMENT AS FORESEEN UNDER ARTICLE 9

PART 2 U.K. NON-TARGET SPECIES ASSESSMENT PROCESS

Step 1 Likelihood of establishment and spreading of non-target species beyond the intended area of introduction U.K.

a The assessor is referred for guidance to Appendix A and Appendix B of the ICES Code of Practice.
b The final rating under likelihood is assigned the value of the element with the lowest risk rating and the final rating for the level of certainty is also assigned the value of the element with the lowest level of certainty.
Event	Likelihood(H, M, L)	Certainty(VC, RC, RU, VU)	Comments in support of assessmenta
A non-target species is introduced as a consequence of the introduction or translocation of the aquatic organisms.
The introduced non-target species encounters susceptible habitats or host organisms.
Final ratingb

Step 2 Consequences of non-target species establishment and spreading U.K.

a The assessor is referred for guidance to Appendix A and Appendix B of the ICES Code of Practice.
b The final rating for the consequences is assigned the value of the highest risk rating and final rating for the level of certainty is also assigned the value of the element with the lowest level of certainty.
Event	Likelihood(H, M, L)	Certainty(VC, RC, RU, VU)	Comments in support of assessmenta
The non-target species compete with or predate on native populations, leading to their extirpation.
Genetic mixing of the non-target species with local populations leads to a loss of genetic diversity.
Other undesirable events of ecological or pathological nature
Some of the abovementioned events persist even after removal of the non-target species.
Final ratingb

Step 3 Risk potential associated with non-target species U.K.

A single value is given based on the assessments performed in Steps 1 and 2:

a The assessor is referred for guidance to Appendix A and Appendix B of the ICES Code of Practice.
b The final rating under risk potential is assigned the value of the element with the lowest risk rating and the final rating for the level of certainty is also assigned the value of the element with the lowest level of certainty.
Component	Risk potential(H, M, L)	Certainty(VC, RC, RU, VU)	Comments in support of assessmenta
Establishment and spreading (step 1)
Ecological consequences (step 2)
Final ratingb

The conditions applicable to the assessment of risk potential associated to the alien species (part 1) are to also apply, mutatis mutandis, to this risk potential associated with non-target species (part 2), including the obligation to introduce containment and mitigation measures.