Groupe G²N Inc.
Expertise multidisciplinaire
Rigor and reliability
A people-focused and proactive approach
Raising standards. Building with confidence.
Groupe G²N Inc. brings together complementary expertise in geotechnics, environment and laboratory testing through its divisions GMT Lab, Notreau and Geostar. Together, we support our clients in delivering their projects through technical rigour, proactivity and a deeply human approach.
Our vision is clear: to raise the standards of our industry by offering reliable, durable solutions tailored to real-world conditions. We believe that the quality of analyses, combined with trusted relationships and a concrete understanding of the issues, is essential to building with confidence.
Analyzing to build better is at the heart of our mission. On every mandate, our teams put their expertise at the service of informed decisions, providing precise geotechnical and environmental services, high-quality reports and constant support, from start to finish.
The strength of Groupe G²N Inc. rests above all on its values. Teamwork, excellence and respect guide our daily actions, in our internal relationships as well as those we maintain with our clients and partners.
Integrity, trust and flexibility are integral to the way we work, allowing us to adapt to the specific needs of each project while upholding the highest professional standards.
Active in a bilingual regional market, Groupe G²N Inc. works with engineering and environmental firms, technologists, contractors, architects, real estate developers as well as municipalities and public bodies. Whatever the scale of the mandate, our goal remains the same: to deliver solid, durable and tailored solutions, to build for today and for the future.
💧 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 ANALYSIS SERVICES
OUR ANALYSIS SERVICES
Precise analyses compliant with the strictest standards, ensuring the reliability and durability of your projects.
Materials Quality Control
Essential for construction projects: concrete pour, compaction test, excavation bottom verification, approval of grain-size data sheet and mix design (asphalt and concrete).
Slope stability assessment
A slope stability study is a geotechnical analysis that verifies whether a slope or excavation wall is stable enough to avoid sliding, collapse, or deformation.
Geotechnical investigations
Soil bearing-capacity studies and tests, preliminary geotechnical investigations, and pre-construction site inspections.
Soil, concrete, and aggregate testing
Retained and passing sieve analysis for granular materials (MG20, MG112, MG56, etc.), shear strength, Atterberg limits, water content, compressive strength, hydrometer (sedimentometry), Proctor, consolidation tests, and more.
OUR AIR SERVICES
Scientific rigor and precision tools for accurate, fast, and certified results.