Groupe G²N Inc.
Environmental Studies (Phase I, II and III) and Remediation are essential to secure financing or complete a safe real estate transaction.
Soil characterization for contaminant detection;
Floristic Quality Assessment – Wetland Identification
Géostar – Your environmental experts
At Géostar, we believe the quality of any project rests above all on a deep understanding of the soil and surrounding environment.
For many years, we have been putting our scientific and technical expertise at the service of developers, builders, institutions, and property owners across Quebec.
Our mission is clear: to deliver reliable, rigorous, and sustainable environmental analysis solutions, ensuring the cleanliness of your soil and the compliance of your projects.
Comprehensive, multidisciplinary expertise
Our services cover the full range of needs related to the study and understanding of soils:
Phase I, II and III environmental assessments to identify and characterize contaminants present in soil and groundwater.
Drilling and sampling to collect accurate, reliable data directly in the field.
Environmental site monitoring to ensure regulatory compliance before, during and after construction.
Industry standards
- Soil remediation
With a team of experienced engineers, technicians and analysts, every mandate benefits from end-to-end support, transparent communication and rigorous follow-up from start to finish.
Values rooted in science and sustainability
At Geostar, our approach is built on three core pillars: precision, prevention and environmental responsibility.
Every intervention, whether an environmental analysis or a field sample, is guided by uncompromising scientific rigour and a deep respect for the natural environment.
We believe that environmental study is much more than a technical step: it is a commitment to sustainability, the safety of works and the preservation of our shared heritage.
Every study we carry out helps build a safer, healthier and more sustainable territory for future generations.
Our role goes beyond simple analysis: we actively contribute to the advancement of environmental practices in Quebec, putting science at the service of sustainable development and collective progress.
A trusted partner across Quebec
Based in Brownsburg-Chatham, in the Laurentides region, Géostar serves a wide territory across Quebec.
Our work covers residential, commercial, institutional, and municipal projects alike.
Our speed of execution, availability, and attention to detail make Géostar a partner of choice for every professional in construction and environmental work.
Synergy within Groupe G²N Inc.
Geostar is part of Groupe G²N Inc., a group of Quebec companies specialized in environmental analysis and quality of living environments.
In partnership with Laboratoire Notreau (specialized in water and air analysis) and GMT Lab (a scientific and materials analysis laboratory), we form a complete, integrated chain of expertise, from sampling through to laboratory validation.
This collaboration allows us to deliver multidimensional services that are consistent and uniform across Quebec.
Let’s build together on solid foundations
Choosing Geostar means choosing science, transparency and trust.
Every day, we work to support your projects with rigour and commitment, while actively contributing to the protection of our shared environment.
💧 Laboratoire Notreau — Expertise dedicated to purity
For over 20 years, Laboratoire Notreau Inc. has been the Quebec benchmark in water and air quality analysis.
Our mission is simple: protecting the health of families, workers, and communities by guaranteeing reliable, precise, and fast results.
Each day, our team puts its scientific expertise to work toward a single goal: providing you with an indoor environment that is healthier, safer, and more peaceful.
🧪 Recognized scientific expertise
At Notreau, we believe trust is built on transparency and rigor.
That is why our analyses are performed using cutting-edge laboratory technology and to the highest industry standards.
Our certified experts ensure constant quality control at every step: from sample collection through to results validation.
We analyze and interpret a wide range of parameters with precision, including:
Drinking water quality: detection of bacteria, heavy metals, nitrates, pH, minerals, etc.
Indoor air quality: testing for mold, allergens, fine particles, and volatile organic compounds.
Contaminants and microbiological agents: identification, measurement, and tailored recommendations.
Our reports are clear, comprehensive, and designed to help you understand your results and make informed decisions, whether for your home, your business, or institutional buildings.
💼 Tailored solutions for every need
Whether you are a homeowner, contractor, building manager, or public institution, Laboratoire Notreau offers services perfectly suited to your needs.
We work just as comfortably with individuals concerned about their well-being as with professionals who must comply with environmental or regulatory requirements.
Our clients choose us for:
Our speed of execution: results delivered within optimized turnaround times.
Our personalized support: every client benefits from attentive, people-centered follow-up.
Our scientific rigor: analyses performed by experienced technicians and chemists.
Our turnkey approach: from sample collection through to delivery of the report.
📦 Simple, effective tools
Because the health of your environment shouldn’t be complicated, we have designed the Notreau® testing kits (water) and Notrair® (air).
These ready-to-use kits let you collect samples easily at home or at your workplace, then return them to our laboratory for analysis.
Within a few days, you receive a detailed, easy-to-read report, along with practical recommendations to correct or improve the quality of your air or water.
These practical solutions combine the simplicity of self-use with the reliability of professional testing — a perfect balance for anyone who wants to act quickly and effectively.
🌱 A lasting commitment to a healthier world
At Notreau, protecting the environment is at the heart of our mission.
We believe every analysis helps build a cleaner and safer future.
That is why we adopt eco-responsible procedures, reduce our environmental footprint, and raise our clients’ awareness of the importance of prevention and environmental quality.
Notreau is more than a laboratory:
it is a trusted partner, an ally for your health, and a guarantee of peace of mind.
💧 Choose precision, speed, and peace of mind. Choose Notreau.
Whether you need to test your well, check the air quality in your building, or confirm the compliance of your facilities, Laboratoire Notreau Inc. is with you every step of the way.
🔹 Precise results.
🔹 People-centered service.
🔹 Expertise that inspires confidence.
Because the quality of the air you breathe and the water you drink deserves the utmost attention.
Choose purity, reliability, and peace of mind.
Choose Notreau.
OUR ENVIRONMENTAL STUDY SERVICES
State-of-the-art technologies and recognized expertise for reliable, fast analyses compliant with the highest standards.
Environmental studies (Phases I to IV)
Discover how our environmental studies ensure the compliance and safety of your projects from the very first step.
Soil and natural environment characterization
Analyze your land’s quality and composition in depth to build on solid, lasting foundations.
Floristic and faunistic assessments
Preserve biodiversity while meeting the environmental requirements of your project.
Site remediation and decontamination
Bring your land back to life with effective, environmentally responsible decontamination solutions.
OUR AIR SERVICES
Scientific rigor and precision tools for accurate, fast, and certified results.
Also discover our services
GMT LAB AND NOTREAU
As partners within Groupe G²N inc, GMT Lab and Notreau share the same vision: putting science to work in support of quality and sustainability.
While Notreau specializes in water and air quality analysis, GMT Lab focuses on the analysis of soils, aggregates, and construction materials.
Together, these laboratories complement the expertise of Géostar, providing an integrated approach to understanding, assessing, and protecting the environment in all its forms.
👉 Discover how Groupe G²n inc, with Géostar, Notreau, and GMT Lab, helps build safer and more sustainable environments.
