Soil Testing

Building or renovating? Our site classification report provides relevant information required for an engineer to design the foundation of a house or extension.

Geotechnical Engineering

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

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.

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.

McMahon Earth Science

About Us

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

We were established in 1998 to fill a market gap for a locally based qualified consultancy firm to offer professional environmental and geotechnical services to the Riverina and South West Slopes.  Work at this time included soil surveys, hydrogeological/hydrological surveys, environmental assessments and environmental monitoring.

In 2012, we acquired CPN Hurst Testing and assimilated the geotechnical services and NATA accredited laboratory into our growing business.  This acquisition allows us to offer a complete service to our clients for all their geotechnical and environmental requirements.

We have a reputation for having expert local knowledge of the land systems and earth sciences of south western NSW that gives us the market edge.

  • 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.

  • Experienced

    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.

Memberships and Accreditations

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