Ecosens – good advice in all sectors
We are an interdisciplinary team made up of qualified scientists and lawyers. Contaminated sites, environmental due diligence, environmental law or environmental management, environmental planning or hazardous materials in buildings: we develop sustainable and customer-specific solutions to your technical and legal problems.
Interdisciplinarity, curiosity and continuous professional development are our recipe for success when developing the technical and legal aspects of an innovative and balanced comprehensive solution. We are a dynamic, highly motivated team with a flat hierarchy.
As an employer, we offer stability, flexibility and continuous possibilities for development. We have been successfully handling complex projects for private and public customers in Switzerland and abroad for over 30 years and in the process have been attracting the best young talent in the environmental sector.
We look forward to introducing you to the Ecosens team and to our services on this website. Our expertise allows us to find the perfect solution for you!
Our team
CEO / partner:
Lorenz Lehmann Executive partner, president of the board of directors
lic. iur. Zurich University, solicitor
llehmann@ecosens.ch +41 44 839 47 80
Daniel Aegerter Partner, Divisional manager: Environment, Due Diligence and Compliance
Diploma in Environmental Sciences ETH (Federal Institute of Technology)
daegerter@ecosens.ch +41 44 839 47 78
Stefan Fuchs Partner, Fribourg branch manager
Diploma in Geological Sciences BENEFRI UniFR Geologist CHGEOL
sfuchs@ecosens.ch +41 26 422 39 55
Michael Rüffer Partner, Senior project manager for contaminated sites
Dipl. Phil.II, Geologist
Hydrogeology CHYN
mrueffer@ecosens.ch +41 44 839 47 81
Employees:
Thiago Biolley Junior project manager Contaminated sites and hazardous materials in buildings
MSc. Earth Sciences (University of Geneva and Lausanne)
Certificate in Geoinformatics (GIS) (University of Geneva)
tbiolley@ecosens.ch +41 44 839 47 34
Corinne Blum Deputy divisional manager for contaminated sites and building land
MSc Geology (Bern University)
cblum@ecosens.ch +41 44 839 47 96
Pia Buser Project manager for indoor air quality, radon specialist
Diploma in Environmental Engineering, ETH (Federal Institute of Technology)
pbuser@ecosens.ch +41 44 839 47 45
Pascal Diefenbacher Divisional manager for indoor air quality
Dr. sc. Environmental Sciences (Federal Institute of Technology)
pdiefenbacher@ecosens.ch +41 44 839 47 97
Maline Elumelu Project manager: hazardous materials in buildings
MSc Environmental Sciences, ETH (Federal Institute of Technology)
Domokos Fazakas Project manager: contaminated sites and building land
Diploma in Geological Engineering
dfazakas@ecosens.ch +41 44 839 47 98
Nora Hoch Junior project manager: Contaminated sites and hazardous materials in buildings
MSc Environmental Sciences ETH (Federal Institute of Technology)
nhoch@ecosens.ch +41 44 839 47 86
Julia Hunziker Project manager: Contaminated Sites
MSc Environmental Sciences ETH (Federal Institute of Technology)
jhunziker@ecosens.ch +41 44 839 47 43
Loriana Karelova Head of Accounting/Personnel and Administration
Businesswoman EFZ Profile E
SB RW Finance/Cost Accounting
lkarelova@ecosens.ch +41 44 839 47 88
Isabelle Kohler Project manager: Contaminated sites and hazardous materials in buildings
MSc Environmental Engineering, ETH (Federal Institute of Technology)
ikohler@ecosens.ch +41 44 839 47 91
Thomas Kull Senior project manager: Contaminated Sites
Diploma in Biological Sciences, ETH (Federal Institute of Technology)
Post-graduate diploma in IT
tkull@ecosens.ch +41 44 839 47 84
Denise Kull-Portmann Co-divisional manager: Hazardous Materials in Buildings
MSc Environmental Sciences, ETH (Federal Institute of Technology)
dkull@ecosens.ch +41 44 839 47 72
Annatina Maurer Administration hazardous materials in buildings
Biology (MSc. in Ecology)
amaurer@ecosens.ch +41 44 839 47 33
Silvan Müller Junior project manager: Hazardous materials in buildings/Project staff: Environmental planning
MSc Environmental Sciences, ETH (Federal Institute of Technology)
smueller@ecosens.ch +41 44 839 47 73
Raphael Rapold Project manager for indoor air quality
MSc. economic chemistry
rrapold@ecosens.ch +41 44 839 47 90
Josephine Reichlin Junior project manager: Contaminated Sites
MSc Geological Sciences, ETH (Federal Institute of Technology)
jreichlin@ecosens.ch +41 44 839 47 93
Stéphanie Roth Project manager: Hazardous materials in buildings and contaminated sites
MSc Geological Sciences, UniFR
sroth@ecosens.ch +41 26 422 39 53
Daniel Sabathy Divisional manager: Environmental Planning
Diploma in Biological Sciences ETH (Federal Institute of Technology)
dsabathy@ecosens.ch +41 44 839 47 76
Ansgar Schlöffel Senior Project Manager: Hazardous materials in buildings
Diploma in Environmental Sciences
aschloeffel@ecosens.ch +41 44 839 47 85
Tanja Schmid Project manager: hazardous materials in buildings
MSc Geological Sciences, ETH (Federal Institute of Technology), Zurich
tschmid@ecosens.ch +41 44 839 47 83
Lars Schudel Co-divisional manager: Contaminated sites/ Deputy divisional manager: Environmental planning
Certified Geographer
lschudel@ecosens.ch +41 44 839 47 40
Norman Seidel Project Manager: Hazardous Materials in Buildings
Builder
nseidel@ecosens.ch +41 44 839 47 39
Ramona Seling Project Manager: Hazardous Materials in Buildings
Diploma in Mechanical Engineering (University of Applied Sciences)
rseling@ecosens.ch +41 44 839 47 48
Frank Stamer Deputy divisional manager: Hazardous materials in buildings
Certified geologist
Certified industrial engineer (University of Applied Sciences)
fstamer@ecosens.ch +41 44 839 47 49
Katrin Tanneberger Co-divisional manager: Hazardous materials in buildings
Dr. rer. nat. Leipzig University
ktanneberger@ecosens.ch +41 44 839 47 46
Santiago Vargas Junior project manager: Hazardous materials in buildings
BSc Environmental Engineer (University of Applied Sciences)
svargas@ecosens.ch +41 44 839 47 92
Melanie Vögtli Co-divisional manager: Contaminated sites
MSc Environmental Engineering, ETH (Federal Institute of Technology)
mvoegtli@ecosens.ch +41 44 839 47 71
Sanja Vranic Project manager: Hazardous materials in buildings and indoor air quality
MSc Environmental Sciences, ETH (Federal Institute of Technology)
svranic@ecosens.ch +41 44 839 47 42
Niko Westphal Project manager for hazardous materials in buildings
Dr. sc. Geological sciences ETH (Federal Institute of Technology)
nwestphal@ecosens.ch +41 44 839 47 44
Andrea Zimmermann Marketing and Administration
BSc Multilingual Communication, ZHAW (Zurich University of Applied Sciences)
CAS Marketing- und Corporate Communication
azimmermann@ecosens.ch +41 44 839 47 89
Consultants:
Albert von Däniken Consultant for environmental due diligence and compliance