Staff Qualifications

Marc D. Barnes
Senior Project Manager, Owner

Marc has over twenty years of experience in forestry. His knowledge of natural resource management is diverse and extensive – stemming from his experience as a logger in Eastern Canada, and through the positions he has held in academia, industry, and private consulting firms. Combined with his high level of education from accredited institutions, this experience allows Marc to participate with the utmost confidence on any project relating to natural resource management, including: forest inventory, timber cruising, silvicultural prescriptions, harvest system analysis, timber sale layout design, watershed analysis, and vegetation inventory and mapping. He is a registered professional forester in the state of California, a Certified Forester through the Society of American Foresters, and a member of the Forest Guild. Mr. Barnes is president, owner, and founder of Integrated Resource Management, employing experts in the fields of forestry, forest engineering, silviculture, and ecology since 1994.

Kathy Dunn
Office Manager/Bookkeeper

Kathy has been with Integrated Resource Management as the lead Office Manager/Bookkeeper since 2003. She comes from a natural resources background which has significantly enhanced her work quality and understanding of projects at IRM.

Kathy graduated from Oregon State University in 2003 with a Bachelor of Science in General Agriculture with an emphasis in Education. She is currently in charge of bookkeeping, office management, supporting project managers, and also successfully carries out project manager duties for several large scale inventory projects throughout Oregon.

Matthew Mellenthin
Habitat Restoration Coordinator/Project Manager

After graduating from the University of Wisconsin Stevens Point in 2004 with a B.S. in Natural Resource Management and a B.A. in Social Science, Matt was hired as a forest inventory technician with Integrated Resource Management.  He has since transitioned into the role of Habitat Restoration Coordinator for the firm, where he manages the restoration department.

Matt has been on the front lines in the battle against invasive species and implementing habitat restoration projects for the last 14 years.  He has dedicated his life to the preservation of native habitats and mentoring the next generation of environmental leaders.  He has partnered with various agencies, landowners, municipalities, non-profits and utilities to develop effective and innovative management techniques for restoring native habitats.

In addition to managing the habitat restoration program at Integrated Resource Management Matt is a member of both the Board of Directors for the Calapooia Watershed Council and the Steering Committee for the Western Invasives Network.  His most important job however, is being the father of two daughters.

Daniel Howard
Forester/Project Manager

Dan joined IRM’s team in 2014 as a Project Manager and has since worked in all facets of company operations. He has served clients from non-profits, to local, regional, state, and federal governments, small landowners, and private industry. He is highly skilled in project management and specializes in data collection and data management using ArcGIS and Microsoft platforms.

Dan completed his education at the SUNY – College of Environmental Science and Forestry, in Syracuse, NY. He holds a B.S. in Forest Resource Management (2008) and an Associate of Applied Science in Forest Technology (2006) from the storied Ranger School in the Adirondack Mountains. Both degree programs are accredited by the Society of American Foresters providing a solid foundation for success in natural resource management. Immediately following graduation, he purchased a new pair of boots and an Amtrak ticket to the PNW, starting his adventure working for the University of Washington – College of the Forestry in Seattle. Dan made his way to Benton County, OR to work for the USGS Forest and Rangeland Ecosystem Science Center in 2010, working as a Biologist, preforming vegetation and biological assessments on projects throughout the West. When not working, Dan can be found mountain biking and is heavily involved with Team Dirt – a local chapter of the International Mountain Biking Association or splashing through local streams in search of trout.







Bill Roach
Senior Project Manager/Timber Appraiser

In February 2018, Bill Roach joined the Integrated Resource Management team as a Senior Project Manager and Appraiser.  Bill graduated from Oregon State University in 1987 with a Bachelor of Science in Forest Management and furthered his appraisal education in 1993 with forest appraisal curriculum from Duke University School of the Environment.  He has held positions with the Mt Hood National Forest, small logging companies, and most recently with Jackson & Prochnau.
Bill’s knowledge of the various sectors of the forest industry includes logging supervision; timber appraisals, Forest Management and private landowner relations.  He has become an asset to the IRM team! Contact Bill at for information regarding appraisal or timberland management. 

Connor O’Hearn
Forest Technician

Connor is currently pursuing a Bachelors of Science in Forestry Management at Oregon State Universities College of Forestry and an Undergraduate GIS Certification from the College of Earth, Ocean and Atmospheric Sciences in Corvallis, Oregon. In August 2013 Connor began work with IRM, accruing three seasons of forest restoration experience working with aquatic and terrestrial restoration practices. These restoration practices included; slash piling, herbicide application, oak release, and noxious weed removal.  By 2016 Connor was promoted to Forest Technician and has been involved with projects for Roseburg Forest Products and Washington State Department of Natural Resources performing timber cruises and inventory work. Connor is experienced with programs such as ArcGIS and ENVI for remote sensing purposes and creation of map products.  Connor is the lead certified pilot and operator for IRM’s UAS Services.

Levi Marley
Habitat Restoration Project Manager

After working for several years as a fire fighter and forestry technician, Levi was hired by Integrated Resource Management as habitat restoration technician.  Levi quickly proved himself as a valuable asset to the organization and a trusted leader in the company.  Subsequently, Levi was promoted to project manager and now senior project manager of the habitat restoration team.  Mr. Marley has helped the organization develop one of the most sophisticated aquatic invasive species programs in the state.

When not leading the companies restoration crews combating invasive species or conducting native vegetation monitoring, Levi still finds himself outdoors camping, fishing, mountain bike riding and exploring the many natural habitats of Oregon and the west coast.