8/10/2019 Construction Phase Plan 3

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2. Construction ContractingThe delivery of the works is to be undertaken by contracting various parts of thefacilities.

Three different contracts are proposed: The gas processing facility per an Engineer Procure Construct contract

The HV power supply per a Construct-only contract The HP gas pipeline per a Construct-only contract

The gas processing facilities will be designed and installed by CB&I. This includesall facilities to operate, control and maintain the equipment. The facilities will be

enclosed within a security fence. The site preparation: access ways and utility

connections will be also be constructed under this contract, but designed byWorleyParsons.

The high voltage power supply to the plant will be designed by WorleyParsons to

meet AusGrid rules and practices. The design will be certified by AusGrid. Theconnection to the power supply and installation of HV facilities will be constructedby a qualified contractor (approved by AusGrid) yet to be awarded.

The gas pipeline between Tomago and Hexham will be designed by

WorleyParsons and vetted by Jemena. The pipeline will be constructed by a

qualified contractor (approved by Hunter Water Corporation) yet to be awarded.

3. Construction StagingThe following sections describe the general staging of construction activities.

These stages are not necessarily consecutive and there will be overlaps in manystages. The intention is to give an overview of the order in which works will becommenced.

Appendix A contains a Construction Staging Matrix which relates therequirements of the projects planning consent conditions to the various stages.

3.1. Stage 1 Site PreparationPlanned timeframe: July 2012 to January 2013

This first stage is to prepare the site and access ways so that construction workscan commence within the Site.

The site preparation and civil works include: Clearing and removing vegetation from the gas access track.

Constructing the gas access track. Clearing and removing vegetation from the main site area andmain access

road

Levelling, grading, compaction and preparing the site ready for startingconstruction of the facilities.

Constructing the main access road. Additional geotechnical and seismic tests will be undertaken to confirm

ground conditions for the design of major equipment foundations. Constructing surface water management infrastructure including: Grading and sloping of construction areas to the south-west of the site. Prepare the holding pond will be the primary separation area for surface

run off. Ponds will cater for sediment control as well as disposal of surface water.

At the start of construction, the secondary access road may be the first prepared

in order to allow access to the site for generating the fill for the primary accessroad. There is no available sewer in the Tomago area, therefore sewage, waste(contaminated) water, and trade waste will be trucked off-site during the

construction phase of the project.CBI will manage this scope of work