Large environmental consultancies
- long response times and high internal costs
- junior delivery teams following senior-led sales
- limited flexibility for small and medium-sized assignments
- start-up costs and standardised approaches
About us
The company combines substantial senior experience with an agile network of specialists. Our aim is to give clients greater speed, precision and relevance.
Founder
Hisøy Miljø AS was founded by Stein Broch Olsen following more than 35 years in senior roles at organisations including HPC, Asplan Viak, Sweco, Rambøll and COWI. He has built environmental teams, led water and environmental initiatives and worked strategically with markets, professional development and service innovation.
His experience ranges from contaminated land and marine sediments to climate adaptation, stormwater, microplastics, environmental monitoring and major complex development and industrial projects.
Delivery model
Specialist network
Water quality, water treatment, microplastics and climate effects.
Marine sediments, contaminated land, biota and EDD.
Climate adaptation, environmental strategy, stormwater and marine monitoring.
Analytical environmental chemistry, tracers and passive samplers.
Dispersion of contaminants to soil and sediments.
Nature surveys, arboriculture, NiN and biodiversity.
Hydrogeology, groundwater and modelling.
Marine geology, sedimentology and micropalaeontology.
Soil conservation, planning processes, landscape and building law.
Coastal engineering, offshore, metocean and marine engineering.
Contaminated soil, marine and freshwater environments and sediments; human-health and environmental risk assessments; reporting under Norwegian pollution-control legislation.
Marine NiN 3 certification (Norwegian Environment Agency, June 2026) and broad professional grounding in natural and aquatic environments.
Assignments throughout Norway, supported by networks and experience across the Nordic region and Europe.
We collaborate with Cautus GEO AS, BADR AS, BioREM AS, ExposMeter AB and several independent specialists.