ISCA

JHCPB is required to achieve an Infrastructure Sustainability Council (ISC) IS rating of ‘Excellent’ in both the Design and As-Built phase. At the commencement of the Project, JHCPB undertook an interim assessment of the 15 categories of the IS rating tool and committed to an aspirational target of 86.8 points (‘Leading’ rating). The project received its Design rating score of 88.8 late 2021, the As-Built submission is forecasted to receive 97.2 if all credits achieve targeted score.

The Project’s IS Rating has had an addition of scope since the last review, this scope addition is incorporating the variation Western Harbour Tunnel – Southern Tunnelling Works. This variation will be incorporated into Rozelle Interchanges IS rating (J189) with additional modelling and monitoring added to cover the scope. The reason this was not sought as a separate rating was due to a significant amount of carryover from RIC regarding design, team and management plans. This leaves the practical completion of the project in March 2025 at the end of this variation. The project is currently proposing to have a staggered verification to be able to address all data from RIC before most surface work staff have departed, this is currently pending with ISC.