Laboratory Testing

We are a NATA accredited construction material testing facility offering a full range of environmental analysis services on soil, water, sediment, groundwater and trade waste.

Geotechnical Engineering

Our qualified staff offer engineering and design services, onsite advice for all civil works and an extensive range of field services.

Environmental Science

Contaminated sites & environmental monitoring for EPA and statutory compliance is a specialty of our firm from sample collection, analysis, interpretation, reporting and compilation of annual returns for the EPA.

Project Management

We offer project management, consulting and engineering services for a range of Geotechnical and Environmental projects.

McMahon Earth Science

About Us

Based in Wagga Wagga, our company provides professional field testing, laboratory analysis and consultancy services to commercial, industrial, private and government clients.

Specialising in Geotechnics, Geotechnical Engineering, Environmental Science and Laboratory Testing our work is done to the highest standards and we have a reputation for innovation that save our clients time and money.

Servicing our local clients in Southern NSW, our work also takes us all over Australia completing major projects in the ACT,  Victoria, WA, and SA.

  • Qualified

    We are a NATA accredited Laboratory with a quality system that complies with the requirements of ISO/IEC 17025:2005.  Our engineering and consultancy staff are degree qualified. Our lab staff are trained in compliance with NATA’s rules.

  • Skilled

    We are a multi-disciplined company that offers a wide range of expert services in laboratory testing, geotechnical engineering and environmental science.

  • Trusted

    We are one of the region’s most reputable consultancy firms.  Our market difference is our experience, quality and focus on customer service, which is second to none.  We achieve customer satisfaction through simplicity, productivity, sustainability and cost effectiveness.

  • Established in 1998 our experienced team with expert local knowledge is ready to help with any project no matter how large or small. Ask us how, get in touch.

David McMahon

Director - Senior Consultant

With over 20 years experience, David has worked on major geotechnical, environmental, soils, ground/surface water, conservation and primary industry projects.

Having completed a Bachelor of Applied Science at the University of Western Sydney, David is currently undertaking a Masters in Environmental Management at Charles Sturt University.

Our team are fully trained and accredited in their respective fields of geotechnical testing, engineering and environmental science. Get in touch!

Our Services


6 Jones Street, Wagga Wagga


02 69 310 510


PO Box 6118

Wagga Wagga NSW 2650

Send us an enquiry