Comprehensive environmental expertise
Sustainable solutions for your projects
A division of Groupe G²N Inc.
Geostar – Soil and environmental expertise
An essential partner of Laboratoire Notreau within Groupe G²N Inc.
Complementing the water and air analysis services offered by Notreau, Geostar specializes in environmental analyses, soil studies and geotechnical expertise across Quebec.
Together, Notreau, GMT Lab and Geostar form a strong partnership within Groupe G²n inc, a network of experts dedicated to protecting the environment 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 development and planning projects.
Our multidisciplinary team brings together engineers, geologists, chemists and specialized technicians, all driven by the same mission: analyzing, preventing and correcting environmental issues related to soils and groundwater.
Our main areas of expertise
Phase I and II environmental site assessments – Identification and characterization of contaminants present in soil and groundwater.
Geotechnical studies – Evaluation of soil conditions before construction to ensure foundation safety and stability.
Drilling and sampling – Precise data collection on soil composition and the presence of pollutants.
Environmental site monitoring – Rigorous follow-up during and after construction to ensure regulatory compliance.
Laboratory analyses – High-precision environmental testing performed in accordance with Ministry of the Environment standards.
A rigorous and human-centred approach
At Geostar, every mandate is handled with the same scientific rigour that built the reputation of Notreau.
Our experts work closely with our partners to find concrete, durable and tailored solutions for every situation, whether residential, commercial or institutional.
A partnership built on quality and trust
Through our collaboration with Notreau and GMT Lab, we offer complete environmental quality management — from water to soil, including air and laboratory analysis.
Together, these three entities of Groupe G²N Inc. combine their expertise to deliver integrated, precise and complementary services, backed by recognized scientific rigour.
This unique partnership allows our clients to benefit from comprehensive support, from sampling to laboratory validation, with the same standards of 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.
Before building, you must understand.
Precise data, rigorous analyses, concrete results.
Géostar analyzes, measures, and evaluates every detail of the soil to provide reliable solutions tailored to your projects.