Geostar

Geostar – Soil and environmental expertise

An essential partner of Laboratoire Notreau within Groupe G²N

Complementing the water and air analysis services offered by Notreau, Geostar specialises in environmental analyses, soil studies and geotechnical expertise across Quebec.

Together, Notreau and Geostar form a strong partnership within Groupe G²N, a network of experts dedicated to environmental protection and public health.

Our mission: understand, diagnose and protect your environment

For many years, Geostar has supported real estate developers, builders, municipalities and institutions in their planning and development projects.

Our multidisciplinary team brings together engineers, geologists, chemists and specialised technicians, all driven by the same mission: to analyse, prevent and correct environmental issues affecting soils and groundwater.

Our main areas of expertise

Environmental site studies (Phase I and II) – Identification and characterization of contaminants present in soil and groundwater.

Geotechnical studies – Assessment of soil conditions prior to construction, to ensure the safety and stability of foundations.

Drilling and sampling – Collection of accurate data on soil composition and the presence of pollutants.

Environmental site monitoring – Rigorous follow-up during and after work to ensure regulatory compliance.

Laboratory analyses – High-precision environmental testing performed according to the standards of the Ministry of the Environment.

A rigorous and human approach

At Geostar, every mandate is handled with the same scientific rigour that has built the reputation of Notreau.

Our experts work closely with our partners to find concrete, sustainable and tailored solutions for every situation, whether residential, commercial or institutional.

A partnership built on quality and trust

Through our collaboration with Notreau et GMT Lab, we provide full management of environmental quality — from water to soil, including air and laboratory analysis.

Together, these three entities of Groupe G²N combine their expertise to deliver integrated, precise and complementary services, supported by recognised scientific rigour.

This unique partnership allows our clients to benefit from end-to-end support, from sampling through to laboratory validation, with the same commitment to quality, reliability and transparency.

Discover Geostar

Want to learn more about our services or entrust a mandate to our team of experts?

👉 Visit the official Geostar website to discover all our projects, studies and environmental expertise.