TIMBERLINE FOREST INVENTORY CONSULTANTS
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Timberline 

We bring together a solid team of experienced Photo Interpreters;
specializing in forest resource and wetland inventories
with multiple certifications for western Canada
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Stephen Lewis, R.P.F. (AB, SK)
Owner/General Manager
Steve has over 30 years of experience in resource inventories, including 15 years with softcopy; including overseeing softcopy set-up protocol, file management and quality control.    With over 25 years experience in managing resource inventories;  varying in size from 200 hectares to 6 million hectares; including grasslands, wetlands and  traditional vegetation inventory.  Steve is a certified AVI photo interpreter. 

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John Cosco R.P.F. (BC, AB, SK)
Senior Inventory Forester Consultant


​​John has over 40 years of experience in mapping, production, audit, update and documentation of vegetation inventories throughout British Columbia, Alberta, Northwest Territories, Yukon Territory, Saskatchewan, and northwest Ontario.   With over 25 years of experience managing interdisciplinary teams for production of traditional inventory and mapping projects and over 20 years of experience managing softcopy inventory and mapping projects, John is a forest resource inventories expert.  ​John is a certified interpreter for British Columbia, Alberta and Ontario. John is transitioning to retirement.

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Shawn Metheral, B.Sc., R.P.F (AB,SK)
Operations Manager

Shawn  has close to 30 years of experience in forestry.  He holds a BSc in Forest Management from the U o f A, is  a Registered Professional Forester in Alberta, and a member of the Association of Saskatchewan Forest Professionals.   Shawn has worked on numerous inventory projects in Alberta, Saskatchewan, Ontario and Northwest Territories.  Shawn's excellence in Photo interpretation of color and black and white imagery for vegetation resource inventories using various soft copy systems are Shawn's expertise.

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Karen Boida, B.Sc.
​Senior Inventory Forester
Karen has been in the resource inventory industry since 1994 and has been involved in the mapping, production, audit, update and documentation of vegetation inventories throughout Alberta, British Columbia, Manitoba, and the Northwest Territories.   Karen has completed many oil and gas inventory projects, which have entailed both forest and wetland classification, that are a necessary component for Environmental Impact Assessments.   ​Karen is a certified interpreter for Alberta. ​



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Mark Bablitz R.F.T. (AB) (Ont)
Senior Photo Interpreter
Mark has close to 30 years of aerial photo and digital image interpretation experience. A native Edmontonian and graduate of NAIT's Forest Technology program, he began his career in Victoria, B.C. and after 10 years returned to work in his native province. He has been involved in all aspects of forest and vegetation inventory projects in Alberta, British Columbia, Saskatchewan, Ontario, Northwest Territories, and Yukon Territory. Mark is a certified interpreter in Alberta, British Columbia and Ontario 


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Mathieu Champion
Forest Update Interpreter
Mathieu has been with Timberline for over 8 years now. His main task is the yearly harvest update that occurs in north-eastern Alberta. Mathieu also administers the specialized conifer and deciduous programs.

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Claudio Aguilera B.Sc. 
Photo Interpreter
Claudio has 15 years experience as a Forest Engineer from Chile; working  in GIS systems, GPS and differential GPS including ArcGIS, ERDAS, DAT/EM and GRASS in various forest management, inventories and energy projects and environmental areas.

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Nicholas Lewis B.Sc.
Junior Photo Interpreter
Nick joined the team this summer working on the Al-Pac ARIS reconciliation project.  He completed his Bachelor of Science from the University of Alberta in December 2023, and is now training as a photo interpreter.  

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Tamara Lewis
Owner/Office Manager

Tamara Lewis graduated from the University of Alberta with a B.Sc. in Agriculture Economics, and worked in the Agriculture Industry for many years.  Tamara manages our office and team.

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               Mike Sandvoss R.F.T.  (BC)
               Senior Inventory  Manager/Project Manager
Mike Sandvoss is a senior inventory manager and project manager with over 30 years of aerial photograph/digital image interpretation and data collection experience.  Since joining Timberline in 1987 as an inventory specialist, he has been involved in all aspects of forest and vegetation inventory projects, specializing in the project management of vegetation classification, ESA and land form classification, remote sensing, and general aerial photograph interpretation.  Mike is a certified interpreter in B.C. (VRI), Alberta (AVI), and Ontario (eFRI in Boreal and Great Lakes/St Laurence).

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Francois Rosa
Forest Inventory Technician
Francoise has over 25 years experience in forestry in BC and Ontario; in air calling via helicopter, Timber Cruising, and VRI Ground Sampling phase 1 and 2.  ​Francoise is certified in Photo Interpretation in BC and Ontario.

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Jouni Tanskanen
​GIS and Forest Inventory Technician
Jouni has over 25 years experience in providing GIS support for inventory projects in BC and Alberta.  Jouni's extensive field experience combined with technical GIS and Softcopy knowledge has provided valuable contribution to large inventory projects; Haida Gwaii VRI, Horsefly VRI, Soo TSA VRI, Sunshine TSA VRI, Ontario's Ogoki and Crossroutes eFRIs, and Technical GIS support for various Alberta AVI projects.  Jouni is a  fully accredited classifier for VRI in British Columbia and eFRI in Ontario.


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Jose Marcelo Guinez B.Sc.
Inventory Interpreter
Marcelo joined us in 2014; training in Canadian Boreal Forest.  Marcel is a Forest Engineer graduate from Chile.  

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Rodrigo Inzunza B.Sc.
Photo Interpreter
 Rodrigo graduated as a Forest Engineer from the Southern University of Chile in 2011 and has  worked in Canada as an aerial photo interpreter and field worker since graduation.  He is very interested in education and social integration; especially in rural communities.  His experience includes forest resource inventory, forest nurseries, greenhouses (horticulture and plant production) and basic seed processing.​


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Gabriel Zeng F.I.T.
Forest Inventory Specialist
Born and raised in China, Gabriel Zeng recently graduated form the Forest Technology Program at NAIT. He has worked in oil and gas reclamation research, recreation, resources inventory and eFRI in Ontario.  Joining us in December 2015, he currently works on Al-Pac projects.

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Hugh Devon
Senior Inventory Forester
 Hugh is a forest technician graduate from Sault College with a second diploma specializing in silvicultural treatments. He spent three years working in entomology research with the Canadian Forestry Service in Sault Ste Marie before switching over to work for the Ontario Ministry of Natural Resources. He had a thirty five year career in Forest Inventory with OMNR,  Four years in GIS mapping before becoming a Forest Inventory Specialist ( photo-interpreter) which he did for 31 years. He specialized in forest ecosite interpretation and was a lead for the MNR in incorporating the mapping of ecosites with forest inventory.  He has also successfully taken a postgraduate online LIDAR course from the university of New Brunswick.  Currently married with three children, Hugh lives on St. Joseph Island,  where he enjoys any activity that gets him out in nature; hiking, fishing hunting and training field trial retrievers.

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  • Home
  • Resource Inventory
    • Wetlands
  • About us
    • Our Team
    • Our History
  • Contact Us
    • Job Opportunities