Our experts
MANAGING DIRECTOR
Ernie Gmehling
Associate Dip Eng (civil)
- Preparation of earthworks specifications for residential, commercial, and infrastructure projects
- Specification and management of topsoil and sodic soils for landscaping and rehabilitation
- Development of sewer trench backfill specifications for land development
- Design and certification of clay liners for water-holding structures such as dams, wetlands, and retention basins
- Subgrade remediation for problematic or highly reactive ground conditions
- Engineering for construction over soft or weak soils, including preloading and other ground improvement techniques
Ernie is a keen water-skier, loves international trekking and seeking adventures across the globe and is a confident and skilled woodcarver.
GENERAL MANAGER
Ange Gentile
Diploma of Business (Admin)
Ange joined the company in November 2006 and has been instrumental in assisting the directors take the company from the small humble beginnings to what it is today. Ange was promoted to the General Manager position in July 2021 taking the lead to allow Ernie Gmehling to focus on technical aspects of the business. Ange has great organisational skills and an ability to multi-task with the ever-increasing demands on her and the team. Ange is always happy to assist our clients with their enquiries and is fundamental in the delivery of account management which comes with over 30 years’ experience in the industry.
GEOTECHNICAL TEAM LEADER
Nathan Chow
BE (civil) NER, MIE Aust
Nathan holds a bachelor’s degree in engineering (Hons), obtained from The University of Auckland.
“Nathan began his career in the construction industry in 2017 as a structural engineer but transitioned to geotechnical engineering after a year. He’s naturally curious about what lies beneath the surface and is motivated by understanding the deeper challenges not immediately visible.
Since moving to Australia in 2020, Nathan has been fortunate enough to work across multiple states on a wide range of projects including Victoria, New South Wales, Queensland, South Australia, and Western Australia. These include land development, commercial buildings, renewable energy projects, and major infrastructure such as rail and road networks.
Through these experiences, Nathan has developed valuable skills in project management and communication. He is known for his ability to identify issues and breaking them down piece by piece. As cliché as it may sound but challenges and pushing for continuous growth has become a core motivator for Nathan.
He places great importance on supporting his team and fostering a positive, collaborative environment. Clients and other professionals enjoy the clarity and efficiency that come with working alongside him.
Outside of work, Nathan enjoys a range of sports, cooking, or exploring Melbourne’s diverse food scene. He also values quality time with family and friends as one of his favourite ways to unwind.”
ENVIRONMENTAL TEAM LEADER
Jesse O'Connor
BE (Biological Science) RSP
Jesse holds a bachelor’s degree in Biological Sciences, obtained from La Trobe University, where his studies focused on environmental disciplines and soil science. Whilst completing his degree, Jesse joined Ground Science as an undergraduate environmental scientist and has since developed the skills and knowledge base to become the Environmental Team Leader.
Jesse was the first Registered Soil Practitioner to be accredited in Victoria and has been key in expanding the soil science capabilities of the environmental team to include sodic soil assessments and further developing proficiency in Land Capability Assessment’s. The environmental team’s expertise lies in early stages land development through due diligence investigations and Preliminary Site Investigations but can assist in a broad scope of contamination assessments large and small.
Outside of work, Jesse is a family man who loves to sneak in a game of golf when time permits.
LABORATORY MANAGER
Mark Longfield
Cert IV Laboratory Techniques
Mark has 20 years of experience in CMT testing and has worked on many major infrastructure projects around the state including Eastlink, Peninsula link, Westgate Tunnel, Geelong Bypass and Koo Wee Rup bypass. Mark is a skilled manager and brings a wealth of Knowledge and experience to Ground Science.
QUALITY MANAGER
Emeterio Raquel
Bachelor of Science degree in Mechanical Engineering
Emeterio is a highly experienced leader and Engineer in Manufacturing, Construction, Laboratory, Oh & s Maintenance and Quality with 30 years industry experience. Demonstrated track record in leading lab and quality teams, proven leadership skills and the ability to relate effectively at all levels with a variety of cultures. He has well developed problem solving, interpersonal and organizational skills. Works well in team environments and is highly adaptable to change. A strong lateral thinker and has the ability to drive and implement new initiatives to deliver results.