GLNG Narrows Marine Crossing Tunnel, Gladstone, QLD, Australia, Thiess Pty Ltd, Seconded to GLNG for Project Engineer role • Seconded to GLNG engineering department for delivery of tunnel engineering document, including alignment design, segment design, geotechnical report, launch and reception design for a 4.3km long, ID 3.4m tunnel under the Narrows • Review and approve all engineering and construction document submitted by Contractor, these include design document, construction procedure, technical specification, Inspection and Test plans and safe work method statement • Track document submission to ensure timely delivery of engineering document • Technical review and advise client of the impact of Gladstone Ports Corporation future dredging has on the tunnel • Lead a team of tunnel and QA/QC inspectors representing GLNG to supervise all aspect of segment precast yard, site establishment and tunnel construction works. • Attended daily Permit to Tunnel meeting to review daily excavation monitoring record to assess performance of TBM according to current ground condition encountered. • Daily surveillance and attend Hold and Witness Points to verify quality of work for launch shaft excavation, TBM launch and tunneling works. • Review of quality documentation

Airport Link Project Northern Busway (Windsor to Kedron) and Airport Roundabout Upgrade, (2009-2012), Brisbane, QLD, Australia, Thiess-John Holland Joint venture (project value: $4.6bn). Senior tunnel engineer within the Construction Phase Services team. • Assessed the actual ground conditions based on mapping, probing and behaviours information provided by site geologists and determined the required initial support within the range of expected ground conditions covered in the Design Documentation. Reviewed daily tunnel monitoring results. Conducted and signed off daily Permit to Tunnel Meetings. • Conducted probe hole drilling. • Conducted daily surveillance of tunnel excavation and initial support to ensure compliance with the specifications. • Assisted Contractor with planning of instrumentation schedule and supervision of instrument installation. Rationalised instrumentation regime and monitoring frequency based on tunnel progress and performance. • Supervised pre-production trials of rock bolts and cable bolts. Conducted material submission approvals. Witnessed concrete pre-production trials. • Inspection and approval of tunnel back-end works including electrical trench excavation and backfill, drainage trench excavation and backfill, pavement works and permanent lining footing works. • Inspection and approval of daily tunnel fit-out works including kicker, reinforcement installation, permanent arch lining concrete pours, smoke duct slabs, hangers and permanent shotcrete application. • Inspected and approval of permanent concrete and architectural works in the Northern Busway cut and cover tunnels and bus stations. Verified works done on site were compliant with the project deed requirements in support of signing of the deed certificate.

• Bowraville Off-River Storage Dam Concept Design, Nambucca, NSW, Australia • STEP Deep Tunnel Sewer Tender Design, Abu Dhabi, United Arab Emirates • Darra to Springfield Transport Corridor, Permanent Anchor Installation Supervision, Ipswich, Qld, Australia, John Holland Group • Wyaralong Dam Alliance VFM Phase, Slope Stability Analysis, South-east Qld, Australia, Smart Ecosystem • Melbourne Northern Diversion Sewer Proof Engineering, Melbourne, Vic., Australia, Melbourne Water • Repair of the Googong Dam Spillway Approach Channel Retaining Wall Specification, Queanbeyan, NSW, Australia, ACTewAGL • East Weipa Tailings Dam Cell 2 Slope Stability Analysis, Weipa, Qld, Rio Tinto Alcan • Port Alma Coal Terminal Pre-Feasibility Studies Geotechnical Investigation Specification, Port Alma, Qld, Xstrata Coal • Pacific Motorway Transit Project Section B Tender Design, South-east Qld, Department of Main Roads • Conveyor Drift Steel Set Support Design, Shotcrete and Instrumentation Specification, Moranbah, Central Qld, Carborough Downs Coal Management Pty Ltd • Southern Regional Water Pipeline Shaft Design, South-east Qld, SRWP Alliance

Circle Line Stage 4 & 5 Contract 855 • Seconded to LTA for Circle Line Stage 4 & 5 Contract 855 project, which comprise of 10 underground tunnels with a total length of 10 kilometers and 4 cross passage. Project sum: SGD 399 million. • Supervision of tunneling works for 2 slurry machines and 2 EPB machine. • To review method statement submitted by main contractor and ensures that all works are done according to specification. • Review pre-tunneling document and involve with planning of main drive of tunneling works. • Reviewing of method statements for excavation of 110m2 (face area) and 17m (length) TBM launching chamber using New Austrian Tunnelling Method (NATM), and related works. • Reviewing of method statements for excavation 70m (length) Twin mined tunnel using New Austrian Tunnelling Method (NATM) under Ayer Rajah Avenue. • Supervision of daily NATM tunnel works to ensure that works are carried out according to method statement and tunnel safety plan. • Instigates or advises protective/ preventive measures when necessary through daily reviewing of instrumentation data and TBM operation parameters for monitoring purpose. • Carry out construction risk assessment for all related tunneling works. • Coordination of temporary works design between Contractors and LTA temporary works designers.

The Kaohsiung Metropolitan Mass Rapid Transit System, CR2 Project • Work with a team in the design department for CR2 project, which comprise of 8 underground tunnels and 8 cross-passages. Project sum: NTD 727,320,000 • To plan, prepare and submit all method statement for tunnel construction. • To liaise between Detail Design Company and client for submission of detail design calculation. • Prepare and submit shop drawings for tunnel excavation. • In charge of daily operation of LUR12 up and down track tunnels. • Liaise with client’s consultant to ensure that works are carried out in accordance with specification. • Assist the QC department in preparation of progress claim document. • In charge of cross passages LUR12 CP1 and LUR12 CP2, among which LUR12 CP2 has a sump pit and the final excavation depth is 36.7m below ground level. • In charge of LUR12 uptrack and downtrack remaining works till handing over to track work contractor. • In charge of construction of station tunnel connection ‘omega join’ and construction of bridge slab at station connection

Punggol East Contract 29 • In charge of construction of the HDB Design and Build project in Punggol East, comprising of 8 residential blocks and 2 multi-storey carparks. Project sum SGD 66,472,673. • Liaised with various sub-con and resident engineer to ensure that daily operations are carried out smoothly. • Supervised construction on site so as to ensure that slab cycle time is met. • Checked pile eccentricity and proposed tie beams during piling stage. • Checked architectural and structural drawings to avoid discrepancies. • Produced unit plans and various architectural shop drawings. • Carried out various submission of approved structural and architectural material.

Northeast Line Contract 708 • In charge of constructionof North and South bound tunnel from Clarke Quay to Dhoby Ghaut station. Project sum: SGD 65,000,000 • Ensure daily operation in tunnel goes smoothly. • Ensure alignment of machine and selection of segmental rings. • Ensure blasting and other works in the tunnel are carried out in a safe and approved manner • In charge of construction of cross-passage between North and South bound tunnel. • In charge of concrete repair for segment.