2008 Report of the NWMO Independent Technical Review Group

Overall, the GRG is satisfied with the progress made this year and the quality of work produced by the Geoscience team despite the negative impact of the pan- demic on the delivery schedule of important reports. [...] Bearing in mind the relationship between the subordinate rock amphibolite and gently to mod- erately dipping, higher-frequency fracture intervals with groundwater flow close to or along contacts, the GRG recognized that the results of the 2D seismic reflection investigations will provide important information to the 3D geological model and therefore the hydrogeological modelling work at the Revell. [...] As for the ‘Confidence in Safety’ report for the Revell Site, the GRG is satisfied with the style of presentation of the similar report for the South Bruce Site, bearing in mind the aim to reach 10 Geoscientific Review Group Report 2022 a broader public audience. [...] 4 Broader issues identified by the GRG for further action The GRG is satisfied with the systematic approach and the methods adopted by the NWMO and is impressed by the progress made despite the continued disruptions by the Covid-19 pan- demic. [...] With respect to specific technical matters, during the in-person meeting in November the GRG was pleased to observe good progress in further development of the 3D geological model of the Revell Site and welcomed the plan to implement the DFN modelling approach for smaller- scale fractures and fracture zones at the site in the groundwater modelling workflow.