Log in

2020 Speaker Bios

(information added as received by speakers)

Celinda Adair

Celinda Adair, CFM is the National Flood Insurance Program (NFIP) coordinator for the  State of Oregon Department of Land Conservation and Development (DLCD).  She started at DLCD in July of 2018 as a natural hazards planner. Celinda has also worked as a local community planner and Community Rating Systems (CRS) coordinator for Thurston County, Washington; and spent 4 years working as the Risk MAP program manager for the State of Montana Department of Natural Resources and Conservation (DNRC). Her other experience includes roles as a project manager for the State of Western Australia, a business development consultant for Haefeli-Lysnar Geospatial (Trimble distributor for Western Australia), and a medical products buyer for the Franciscan Health System. Celinda possesses a Master’s degree in Environmental Studies from the Evergreen State College and a Bachelor’s degree in Political Science from the University of Texas at San Antonio.  

Mark Armstrong

Mark Armstrong is a retired Land Surveyor and Geodesist having finished his 40-year career as the NGS Northwest Region Geodetic Advisor. He has spent some of the last three years writing about the early pioneer surveyors who crossed the Oregon Trail, settled in the Willamette Valley and began careers surveying the public lands. His latest published book is a reference atlas that provides an historical look into the discovery of gold in the Western Oregon Cascades beginning in 1858 in the region known today as the Bohemia Mining District. The surveying of mining claims started here even before the Public Land Survey System subdivision of townships had begun. This atlas spans nearly 150-years and pulls together important geodetic and cadastral survey work in the form of mineral survey plats, mine maps, photos, and little-known stories forming an historical chronological record.


Mike Berry

Mike Berry is a 1977 graduate of the Forest Technology program at Central Oregon Community College.  His over 40-year surveying career includes state, federal, county and private sector work. He recently retired as the Deschutes County Surveyor and is a past-president of PLSO Central Oregon Chapter and the Oregon Association of County Engineers and Surveyors. Berry has done extensive road research and retracements at Deschutes County. He has assisted land surveyors, title companies, attorneys, and various governmental agencies in determining the legal status of a multitude of roads and has presented classes on researching and retracing county roads at several conferences and training sessions.


Brady Callahan

Brady Callahan is the GIS Program Lead at the Oregon Parks and Recreation Department. He and his team provide a wide variety of geospatial support for OPRD’s operating programs and 363 state parks, including airborne remote sensing, terrestrial laser scanning, mobile mapping, and spatial analysis. His primary interests are historic aerial photography and small format remote sensing/lidar systems. Brady holds an M.S. in Geography from Oregon State University. He is currently the lead for the Oregon Imagery Framework Implementation Team, the Oregon Statewide Imagery Program, and is a Certified GIS Professional (GISP).

Gerry Clark 

Gerry Clark has worked for the Water Resources Department for 24 years. For the past 18 years he has worked in the Certificate Section processing Claims of Beneficial Use, providing training to Certified Water Right Examiners (CWRE) and proctoring the annual CWRE Exam. Before working in the Certificate Section he worked on the Klamath Adjudication and on water right applications. Prior to working for the Department he worked on a survey crew for 5 years. He has a degree in Elementary Education from Western Oregon State College. 


Daren Cone

Daren Cone is the State Forests Engineer for Oregon Department of Forestry.  Daren is an Oregon registered Professional Forest Engineer and Professional Land Surveyor and a Certified Federal Surveyor. Daren has a BS in Forest Engineering from Oregon State University, and an MBA from Southern Oregon University. Daren’s work experience includes 23 years in the forest industry, 6 years in private consulting offering engineering and surveying services, and 8 years in public service with the Department of Forestry.


Jon Dasler

Jon L. Dasler’s professional experience spans over 30-years of contract project management on hydrographic and land surveying projects for the National Oceanic and Atmospheric Administration (NOAA), U. S. Army Corps of Engineers (USACE), port authorities, and private sector firms. He was involved in the earliest applications of shallow water multibeam for the monitoring of coastal structures and the first application of Ellipsoidal Referenced Surveys for NOAA. Based on his expertise in hydrography, Dasler was handpicked by the NOAA to serve on a Federal Advisory Committee where he served seven years as a special government employee on their Hydrographic Services Review Panel which advised the Administrator on matters related to the nation’s hydrographic services and navigation safety information needs. Dasler is a licensed PE and PLS, certified by the National Society of Professional Surveyors (NSPS) and The Hydrographic Society of America (THSOA) as a Certified Hydrographer. He has been an active board member of the NSPS/THSOA Hydrographer Certification Board since 2001 and currently serves as Chair. He is currently the Senior Vice President and Director of Marine Services at David Evans and Associates, Inc. in Vancouver, Washington.  

Rhonda Dodge

Rhonda works as a Remote Sensing Surveyor in the Geometronics unit of the Oregon Department of Transportation. Prior to beginning her career at ODOT, she received Bachelor of Science Degrees in Geomatics and Applied Mathematics from the Oregon Institute of Technology in 2016 and a Masters of Civil Engineering - Remote Sensing degree from Purdue University in 2017. Rhonda has a passion for all aspects of remote sensing surveying as well as spending time reaching out to the younger generation about the surveying profession.


Jon Ellinger


Jon Ellinger is an ASPRS Certified Photogrammetrist and Mapping Scientist in Remote Sensing. He the Remote Sensing Manager at S&F Land Services. Mr. Ellinger holds a MAS Degree in Geography-Remote Sensing from Oregon State University and has been working in the photogrammetry and LiDAR profession for 12 years.


Rick Ellis

Rick Ellis is  president of CADapult Software Solutions and has worked with and taught Civil/Survey CAD software since the mid-90s.  He is the author of a series books on AutoCAD, AutoCAD Map 3D, Civil 3D, and most recently, Carlson Survey, known as "Practical Guides".  He continues to work on projects in a production environment, in addition to teaching classes to organizations both large and small around the country, helping them get the most out of their design software investment.


Jason Foose


Jason Foose R.L.S, is licensed in Colorado, Arizona, Nevada, and Oregon. He currently resides in Section 12, T 22 N, R 17 W, of G & S.R.M, and has served as The Mohave County Surveyor since 2012. He extends his service to the Arizona Board of Technical Registration as Board Land Surveyor and is an Associate Editor with the American Surveyor Magazine.





Shawn Fidler

Shaun P Fidler has been surveying since March of 1988 beginning his career in Florida before moving to Oregon in 1991. Has worked in Oregon since that time accept a small time in Georgia from 1996-1999. Has been licensed since 2005 and owned his own firm since 2004.  Has a lot of experience in different type of Surveys and Projects.




Larry Goble

Larry Goble is the Manager of the Geomatics Section in FHWA’s Western Federal Lands Office, (WFL), where he oversees the survey and mapping functions.  He took over that role in early 2014 after many years coordinating the operations of the field survey crews. He began his career working on a variety of land development projects before working as a survey party chief, which included such projects as the Chiles Center at the University of Portland, the first downtown segment of the Max Light Rail System in Portland, and the construction of the Mt. St. Helens Visitor Center complex at Silver Lake near Castle Rock, WA. In 1987 he took his surveying background into the public sector where he worked for the US Forest Service on contracts to rebuild infrastructure damaged by the 1980 eruption of Mt. St. Helens. It wasn’t long before he found a home with the Federal Highway Administration, where he administered construction contracts in Yellowstone National Park and led survey crews on projects all around the Northwest. In his current position, Larry manages a small but highly skilled group of surveyors and technicians who provide all the surveying and mapping support for WFL’s annual $200 million+ construction program.


Steve Greenwood

Steve Greenwood is the Director of Training and Academic Services at the National Policy Consensus Center at Portland State University, after more than 30 years of public service at the federal, state, and local levels. In his current position he has designed and led collaborative governance and leadership training both nationally and internationally. He is also the lead faculty for Portland State University’s on-line Graduate Certificate Program in Collaborative Governance and teaches the graduate-level class, “Foundations of Collaborative Governance”. As the former Director of the Oregon Solutions program, he has led numerous collaborative processes on issues such as Oregon’s urban-rural divide, water allocations in eastern Oregon, and Columbia River sediment management.  Greenwood holds a Master of Public Administration degree from the Kennedy School of Government at Harvard University, and received a Fulbright fellowship to assist the government of Portugal on solid waste and recycling policy in 1991. He is the 2007 recipient of the Outstanding Alumnus Award from the University of Oregon’s Planning, Public Policy and Management program.  


Kyle E. Hensley

Kyle Hensley is a 1995 graduate of Oregon Tech, with a B.S. in Land Surveying. He began working for the Bureau of Land Management (BLM) in 1987 as a survey aide, up through survey technician, party chief, and technical lead. Currently, he is employed as a Cadastral Section Chief with the BLM. Hensley obtained his Oregon PLS in 2004, and completed the CFedS program in 2015.

Jaehoon Jung

Jaehoon Jung is a postdoctoral research associate of Geomatics in the School of Civil and Construction Engineering at Oregon State University. He received his BS and PhD in Civil and Environmental Engineering from Yonsei University. His main research areas include building information modeling, lidar data processing, and machine learning. Recent projects he has been involved with include: efficient extraction and evaluation of complex pavement markings from mobile laser scan data, and development of a web-based GIS tool for assessing earthquake hazards in Oregon.

Mary Johnson

Mary thought she could practice law. And so she has. For 35 years so far. Mary thought she could make some law.  And so she has established evidentiary standards for relevant evidence, rebutting a presumption and a frivolous claim. Mary thought she could defend professionals’ licenses.  And so she has. Before the Board of Examiners for Engineering and Land Surveying and others. PLSO thought Mary could teach surveyors some legal stuff.  And so she has.  This year she will present Land Surveyor as Expert Witness and How to Hold onto Your Professional Land Surveying License.

Kristopher Kline

Kristopher M. Kline, president of 2Point, Inc., has a four-year Bachelor of Science degree in General Science from Bridgewater College located in Bridgewater, Va. He has been involved in the surveying profession since graduation, including serving 3 years as Chairman of the N.C.S.S. Education Committee. Kline is also an experienced speaker, columnist for Point of Beginning magazine and published book author on land surveying.

Shawn Kampmann

Shawn Kampmann is the 2019 PLSO Chairman of the Board and Principal Land Surveyor for Polaris Land Surveying LLC in Ashland. He began his surveying career in 1979 at the Cobalt District of the Salmon National Forest in Idaho mapping trail systems throughout the River of No Return Wilderness Area. Since then he has gained extensive experience in all aspects of surveying including boundaries, land divisions, ALTA’s, construction for commercial, industrial and residential developments, roads, public utilities & facilities, airports, harbors, aerial tramways, as well as topographic and flood mapping and retracement of Mineral and U.S. Special Surveys. His experiences in Alaska developed a specialized interest in the determination of water boundaries, including hydrographic, bathymetric, tidelands, riparian and accretion surveys.


Carol Kanne

Carol Kanne has been working in the title industry throughout Oregon, California, Arizona and Hawaii for approximately 45 years, filling nearly every role that exist in a title department. For the past nine years she has been examining and underwriting for WFG National Title Insurance Company in both residential and commercial title departments, as well as title support to the builder services department.


David Laning

Dr. David Laning is Principal Engineer and Solutions Architect for Insitu/Boeing of Bingen, WA.  He has been with the company for nearly 12-years.  He has worked on and with every vehicle designed by Insitu.  He also has extensive experience with 3rd party drones, cameras, LiDAR and GIS systems used with or as an adjunct to Insitu/Boeing’s Defense and Commercial business initiatives.  He is an FAA part 107 pilot, a licensed Professional Electrical Engineer (WA52222) and an FCC licensed ham radio operator.  His doctorate in engineering is from MIT and his bachelor degree in applied physics is from the University of Wisconsin – Madison.

Leo Litowich

Leo Litowich is a Land Surveying Intern (a.k.a. LSIT) with Multi/Tech Engineering, a land development firm in Salem, and a graduate of OIT’s surveying program in April of 2016. Prior to graduation, he spent summers with the Wenatchee National Forest and the Federal Highways Administration, Western Lands Division. Litowich is an officer in the Navy Reserves and has previously been mobilized to Kabul, Afghanistan and Camp Lemonnier, Djibouti. He is licensed in Arizona. 

Mason Marker


Mason Marker, PLS is a Professor in the Department of Geomatics at the Oregon Institute of Technology in Klamath Falls, Oregon.  He instructs GNSS, construction surveying, and boundary law courses.  Prior to teaching at OIT, Marker worked eight years for a private company that specialized in land development and civil engineering. He has served as South Central Chapter President and is a Past Chairman of the Board for PLSO.


Jered McGrath

Jered McGrath is a Senior Project Manager at S&F Land Services in Portland. He has a BS in Land Surveying/Geomatics from Oregon Tech, is licensed in Oregon, Southwest Washington and California, where he has worked in each state during his 20-year career. His day-to-day work includes a variety of land surveying needs that the private sector offers including boundary and topo work, GPS control surveys, UAV and photogrammetry mapping, Title surveys, complex boundary problems, legal descriptions, easements and the division of property in a variety of jurisdictions. McGrath is highly involved in the professional surveying community, such as volunteering time and efforts for Educational Outreach events and the Annual Conference committee. Many of these activities include classroom presentations to prospective surveying students and career councilors, as well as large career fairs catering to thousands of students in a short time frame. Over the past 15-years, McGrath has participated in outreach events in the Portland Metro area such as the NW Career Youth Expo, Willamette Promise events, Engineers Week Career Fairs, Southwest Washington's STEM Week and other outreach opportunities where possible. From these experiences, he hopes to discuss and provide some tips and tricks to helping others provide outreach to prospective surveying students and future surveying technicians at outreach events around the state.


Scot Morcom

Scott Morcom has worked in the title insurance industry since 1998. Over the years, he has held many positions, including tax researcher, customer service rep, sales representative and later, manager of a customer service department, builder services department and sales team. This diversity allows him to answer almost any client question and deliver solutions to most property related challenges. His goal is to streamline clients’ businesses via one-stop shopping for their title insurance and property research needs.


Chris Parrish

Dr. Chris Parrish is an Associate Professor of Geomatics in the School of Civil and Construction Engineering at Oregon State University. His research focuses on full-waveform lidar, topographic-bathymetric lidar, hyperspectral imagery, total propagated uncertainty (TPU) analysis, and unmanned aircraft systems (UAS). Chris holds a Ph.D. in Civil Engineering with an emphasis in Geospatial Information Engineering from the University of Wisconsin-Madison, an M.S. in Civil and Coastal Engineering with an emphasis in Geomatics from the University of Florida, and a B.S. in Physics from Bates College. Chris is the Director of OregonView, a statewide consortium under AmericaView, dedicated to applied geospatial research, STEM education, workforce development, and technology transfer. Prior to joining OSU, Chris served as lead physical scientist in the Remote Sensing Division of NOAA's National Geodetic Survey.


Brian Portwood

Brian Portwood is a professional land surveyor and historian of land rights law, providing advisory, consulting and educational services to the land rights community at no charge, fostering efforts to fully understand and properly resolve all land rights issues that involve a locational component, through interdisciplinary professional collaboration. He was born and raised near Chicago, Illinois, graduated from Lamson Business College in Scottsdale, Arizona in 1983, and began his ongoing career in the land surveying industry at that time. Over the ensuing 22 years he worked in the private sector in many different states from coast to coast, on land development projects of virtually every kind. Since 2005, he has been employed in the public sector as a professional land surveyor by the Bonneville Power Administration, which is a branch of the US Department of Energy, and has been engaged in federal land rights acquisitions. He has authored numerous materials supporting the continuing education of professional land surveyors, including quarterly articles on federal land rights topics, which are published by the National Society of Professional Land Surveyors, updating his professional colleagues on developments in federal case law pertaining to title and boundary issues. 

Chris Pucci

Chris Pucci is a Project Surveyor for the Oregon Department of Transportation in the headquarters level Engineering Automation Section. He is a graduate of Oregon State University and has been a licensed Professional Land Surveyor in Oregon since 2007. Prior to ODOT he worked for two counties and one of the larger cities in Oregon. He has surveyed for planning, project development, right of way, construction, and everything in the middle. He is currently working on ground penetrating radar, contract specifications to support 3D engineered models, automated machine guidance, land survey training, and subsurface utility engineering. 

Mark Sargent

Mark Sargent is the 2020 NSPS President as well as the Managing Member of Richard D. Bartlett & Associates, LLC, a land surveying firm located in Concord, NH. He has been employed in the land surveying profession for over 35-years and active in professional organizations since college, serving as President of New Hampshire Land Surveyors Association (NHLSA) in 2004. He was elected to the membership grade of Fellow in 2005 and 2008, and was presented the Surveying Excellence Award. Sargent has represented the NHLSA as its NSPS Director/Governor since 2007 and was elected to the NSPS membership status of Fellow in 2013. He served as Secretary to the NSPS Board of Governors in 2012 and 2013, as Chairman of the Board of Governors in 2014 and 2015 He has a B.S. in Forest Resources and an A.A.S. in Forest Technologies from the University of New Hampshire.


Gavin Schrock

Gavin Schrock, PLS is a land surveyor, technology writer, editor of xyHt Magazine, and operator of a cooperative real-time GNSS geodetic network (RTN). He has worked in surveying, geodesy, mapping, data management, GNSS, and GIS for more than three decades in the civil, utility, defense, and mapping disciplines. He is published in these fields and has taught these subjects at local, state, national, and international conferences. 

Chris Sherby


Christopher Sherby is a professional land surveyor licensed in OR, WA, ID, UT and NV. He is co-owner of S&F Land Services, a Land Surveying and Remote Sensing company with four offices throughout Oregon and Washington. Mr. Sherby has been an adjunct instructor at Clark College’s Surveying and Geomatics program for the past 12 years. He holds a B.S. degree in Geomatics from the Oregon Institute of Technology.


Chase Simpson

Chase Simpson is an Instructor of Geomatics in the School of Civil and Construction Engineering at Oregon State University. He instructs core surveying courses including Surveying Theory, Control Surveying, and Oregon Land Survey Law. His research focus is on the application of remote sensing from unmanned aircraft systems (UAS) and the use of GNSS for control applications. Prior to becoming an instructor, Chase received a Bachelors of Science degree in Civil Engineering and a Master of Science in Civil Engineering with an emphasis in Geomatics from OSU.


Lee Spurgeon

Lee Spurgeon is the owner of Township Surveys in Oregon City who specializes in all those jobs sane people try to avoid. He is a two-time past Chairman of the PLSO Board of Directors, current Education and Outreach Committee Chairman, frequent contributor to The Oregon Surveyor, 2018 Surveyor of the Year as well as the recipient of the Good Humor Award, Bright Idea Award and Article of the Year Award.


Paul Sundermier

Paul Sundermier makes sure his private clients’ Constitutional rights are protected in the specialized area of eminent domain – the power of the government to take private property and put it to public use. When representing the government-side, he helps the governing body follow constitutional and procedural law. Sundermier became interested in this area of law because of the guidance of a very experienced mentor. He feels he keeps alive that lawyer’s legacy of exemplary relations with his clients and his excellent trial skills.


Scott Van Hoff

Scott Van Hoff, CFM is the Regional Flood Insurance Liaison at FEMA region 10.  He has previously worked on Endangered Species Act Compliance and building code compliance with the National Flood Insurance Program. Scott has over 13 years of experience in floodplain management in the Pacific Northwest and has been with FEMA for more than 5 years.  Prior to FEMA, Scott spent 7 years at the USGS working as a Geospatial Liaison and 10 years at Idaho Department of Water Resources working as a hydrogeologists and Floodplain Manager. Scott earned a bachelor’s degree in Geology at Washington State University followed by 2 years of graduate study in Geology, hydrology and Chemistry at Idaho State University.

Jack Walker


Jack Walker, PLS is Professor and Chair of the Geomatics Department at the Oregon Institute of Technology in Klamath Falls.  He teaches courses including geodesy, remote sensing, map projections, and least squares data adjustment. 





Chuck Whitten

C. E. “Chuck” Whitten (aka “Rusty”) grew up in the small town of Idanha, Oregon (3 miles east of Detroit) before moving to Mill City in 1956. He then graduated in 1967 from Oregon State University with a BS in Forest Engineering and is still a licensed Land Surveyor in Oregon (retired in Washington). He worked for the Washington Department of Natural Resources from 1967 to 1972 and then for Hagedorn, Inc., a private survey firm in Vancouver, WA as a Project Manager from 1972 until his retirement in 2009. During those last 37 years, he worked with hundreds of private clients and many government agencies including BPA, USFS, FAA, and numerous cities, counties, school districts, and port districts across Oregon and Washington. He has lived near Battle Ground, Washington since 1977. One of his hobbies since retirement has been recovering and maintaining original GLO section corners under a 1995 volunteer agreement with the Willamette National Forest. He also works with the Clark College Survey Program in the same endeavors with students.


Copyright © 2019 Professional Land Surveyors of Oregon   Privacy Policy Anti-Harassment & Discrimination Policy
PO Box 230548 Tigard, OR 97281  Phone: 503-303-1472  Toll-free: 844-284-5496  Fax: 503-303-1472  Email: office@plso.org
Powered by Wild Apricot Membership Software