1. What tests were carried out on the nuclear mud that was dredged from outside Hinkley Point nuclear reactor, before being dumped in Welsh waters? OQ56489

Llywydd, chemical and radiological testing was carried out in 2009, 2013 and 2017 on marine sediment prior to its disposal at Cardiff grounds.

Thanks, First Minister. In 2018, I went to the High Court with others to stop the dumping of Hinkley's nuclear mud in Welsh waters just outside of Cardiff. You voted for the dumping to go ahead without testing for plutonium. Now your own expert panel has found that any further dumping is against Welsh interests. It's advised that model studies are carried out. The UK Government report 'NRPB-M173' proves that plutonium alpha radiation leaked for decades without any spike in gamma radiation. So, you and Natural Resources Wales were wrong on your reason for not testing for plutonium. 

You've even been proven wrong about where the mud would end up. Scientists like Professor Barnham of Imperial College London and Professor Henshaw of Bristol university are asking that CR-39 testing is done, so that micro plutonium particles can be identified. Will you admit that you were wrong to dump the mud in 2018, and will you please ensure that CR-39 testing is carried out so that we will know for sure whether or not there are microparticles of plutonium in that mud? The real question is: will you please ensure that CR-39 testing is done because plutonium has leaked into that mud for decades? We know that now. Will you test, please?

Well, Llywydd, I established the independent advisory group to explore all aspects of the siting of a nuclear reactor at Hinkley Point as that affects Wales. The group comprises very senior figures from the range of relevant disciplines, and the group published its report on Tuesday of last week. Its conclusions include the need to put in place effective cross-border arrangements to deal with any emergency, and the need for remodelling of disposal at the Cardiff grounds as a result of its own detailed consideration of the suitability of the Cardiff grounds as a disposal site within a marine protected area and the wider resilience of the Severn estuary ecosystem. I will ensure that the report is made available to the regulator so that its conclusions can be properly taken into account when considering any application that might lead to the marine sediment being disposed at the Cardiff grounds.