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Gary Peach
- Gary Peach
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Tunnels and wastewater or sewage infrastructure are two of my great passions. Both are crucial for public health, environmental protection and long-term global sustainability and often they go completely unseen. It brings me great pleasure and professional pride to be involved in constructing these civil engineering wonders that are the foundations of modern society and vital for future resilience.
Biography
With more than 30 years of international tunnelling and civil engineering experience, Gary specialises in delivering complex underground and surface water projects. His portfolio encompasses assignments in Qatar, Pakistan, Libya, Singapore, Taiwan, Hong Kong, Sweden and the UK. Since 2018, he has led projects for Mott MacDonald in Doha and directed design review, construction supervision, cost control and stakeholder engagement within complex contractual and regulatory frameworks. In each assignment, he has navigated challenging geology and contractual complexities to deliver safety-critical assets on time and within budget.
As project director in Qatar, Gary is responsible for end-to-end project governance, stakeholder engagement, risk and commercial management, and the integration of digital engineering tools to enhance performance and sustainability. His technical expertise in challenging ground conditions spans slurry, earth-pressure balance, open and double-shield tunnel boring machines, New Austrian Tunnelling Method and Sequential Excavation Method, pipejacking and hard-rock excavation, enabling robust solutions in both dense urban centres and remote environments.
He emphasises capacity building through knowledge transfer, forging strong client partnerships and nurturing multidisciplinary teams. Under his guidance, projects have achieved top industry safety and quality ratings, while setting new benchmarks for operational resilience and environmental stewardship in a region where water security is paramount.
Individual
- MML – 2024 Overall winner Client Engagement
- MML – 2023 ISA Reginal winner Excellence in thought leadership
- MML – 2022 ISA Regional winner Project Manager
Project
- 2020, 2021, 2022,2023,2024, 2025 (x2) RoSPA Gold award
- MENA National & International water project 2022
- ENR Water/Wastewater award of Merit 2024
- Fellow of the Institution of Civil Engineers, UK
- Fellow of the Institute of Material, Minerals and Mining, UK
- Fellow Chartered Quality Institute, UK
- Fellow Association of Project Management, UK
- 2025: “Strategic Planning for the start and completion of the longest sub-sea tunnel in the Middle East” SETC Belgrade, Serbia. Peach G (Joint)
- 2025: “Operating, inspection and maintenance of the longest outfall tunnel in the Middle East”: the early years. RETC Dallas, USA. Peach G (Joint) https://retc.org/technical-program
- 2025: “Safely Constructing the longest outfall tunnel in the Middle East”. WTC Stockholm, Sweden. Peach G (Joint) https://www.wtc2025.se/programme-2/
- 2024: “Geotechnical Investigation of the Longest Outfall Tunnel in the Middle East”. MedGU Mediterranean Geoscience Union Barcelona, Spain Peach G (Joint)
- 2024: “Sub Sea Geotechnical -Case Study” NAT , Nashville, USA. Peach G (Joint) https://natconference.com/wp-content/uploads/sites/17/2024/05/NAT24-Tech-Program_v1.2.pdf Page 14
- 2024: “TBM Sub-Sea Tunnelling in the Arabian Gulf” WTC Shenzhen, China. Peach G (Joint)
- 2023. “TBM tunnel offshore connection” RETC, Boston, USA, Peach, G (Joint)
- 2023: “TBM Cutter head management sub-sea in the Arabian Gulf”, WTC, Greece, Peach, G (Joint)
- 2023: “Advances in Infrastructure Sustainability, Renovation, and Monitoring” CIC, Doha, Qatar, Peach, G (Joint)
- 2023: “Tunnel Surveying Works. A challenge of 10.2 km long tunnel under the Arabian Gulf” CIC, Doha, Qatar, Peach G (Joint)
- 2023: “Planning and implementing of effective enabling works for a successful TBM tunnelling project” CIC Doha, Qatar, G Peach (Joint)
- 2023: “Marine geotechnical and Geophysical investigations” CIC 2023, Qatar, G Peach (Joint)
- 2022: “TBM-EPB Operation in extreme ground water conditions and challenging offshore location” TBMDiGs, Viena, Austria. G Peach (Joint)
- 2022: “TBM Tunnel logistics management on the longest outfall tunnel in the Middle East”, NAT, Philadelphia, USA Peach, G (Joint )
- 2021: “TBM Data Performance monitoring on large diameter TBM tunnels lined with shotcrete” RETC, Las Vegas. USA. Peach G (Joint)
- 2020: “Integration of Environmental and Sustainability Management, MPSO Project, CIC Doha, Qatar. Peach G (Joint)
- 2020: “Geotechnical Aspects of Sub-Sea tunnelling. CIC Doha, Qatar. Peach G (Joint)
- 2019: “Rockburst Characteristics and Rockburst Management in Twin TBM Tunnels in the Lower Himalayas” JRMGE Special edition. Peach G (Joint)
- 2019: TBMs meeting the Challenge in Pakistans Lower Himalayas” RETC, Chicago. USA Peach, G.
- 2019: “Grouting a TBM Shotcrete lining under challenging conditions” RETC, Chicago. USA Peach, G.(Joint)
- 2019: “Shotcrete lining installed from an open gripper TBM remedial works” WTC. Naples, Italy Peach G (Joint)
- 2019: “Design and Construction of Cast In-Situ Steel Fibre Reinforced Concrete Headrace Tunnels for The Neelum Jhelum Hydroelectric Project” WTC. Naples, Italy Peach G (Joint)
- 2019: “In-situ stress measurements in TBM tunnels prone to rockbursts” WTC. Naples, Italy Peach G (Joint)
- 2018: “Rockbusts and Rockburst management in twin TBM tunnels” RockDyn-3” Bergan, Norway Peach, G (Joint)
- 2018: “Microseismic monitoring analysis on a TBM” RockDyn-3” Bergan, Norway Peach, G (Joint)
- 2018: “Comparison of Microseismic monitoring and actual rock bursts” RockDyn-3” Bergan, Norway Peach G (Joint)
- 2018: “Severe Rockburts A Case study” WTC Dubai, UAE Peach, G
- 2017: “Rockbursts in TBM tunnels analysis and countermeasures” RETC San Diago, USA Peach, G (Joint)
- 2017: “TBM Advance ground investigations on NJ Project” ICNCGE Lahore, Pakistan. Peach, G (Joint)
- 2017: “(2017.01.19) Practical Considerations for Designing Rock Support for Tunnel Linings in Open Gripper TBMs” WTC Bergan, Norway. Peach, G (Joint)
- 2016: “Rockburst Analysis and Mitigation measure in TBM tunnels” FJELLSPRENGNINGSTEKNIKK, Oslo, Norway. Peach, G (Joint)
- 2013: “TBM Advanced Ground Investigation on Neelum Jhelum Project” ICGE, Lahore, Pakistan. Peach, G (Joint)
- 2007: “Slurry TBM Modifications for clay ground conditions” Shanghai Conference, Peach, G.
- 2006: “Modifying two Hard Rock TBMS for Hong Kongs deep sewers” Tunnelling and trenchless technology , Kuala Lumpur, Malysia. Peach, G.
- 2005: ”High Pressure Jet Grouting in Tunnels – A Case study” WTC Istanbul, Turkey. Peach, G (Joint)
- 2004: “Large-Diameter Tunnelling Collapses: Recovery Design and Execution” WTC Singapore. Peach, G (Joint)
- 2004: “Managing the Design Process on a Underground Civil Engineering Design & Build Contract” NAT Seatle, USA. Peach, G (Joint)
- 2003: “Underground design and build-Do’s and Don’ts for Owners and Contractors” RETC New Orleans, USA. Peach, G (Joint)
- 2002: “Quality Assurance in self-certification construction Contracts” Quality Monthly. Peach, G (Joint)
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