Links & Affiliations

Key Personnel

 Bradley A. Thomas PLS, President, Licensed as a California Land Surveyor in 1985. Brad can be reached by phoning (707) 433-6792 x109 or by email at

Brad began his career as a land surveying apprentice in 1975 and self employment as a Land Surveyor in 1989.  Brad is the President of DobleThomas & Associates, Inc.  His business began in Sebastopol, moved to Windsor in 1995 and he purchased John H. Doble and Associates in 2001.  Brad, at The Map Store, published the Sonoma County AVA Maps, he founded and is currently consulting at  Since 1993, Brad has been the Vice President of Delta Geomatics Corporation.  Delta Geomatics is an aerial photogrammetry firm with offices in Santa Rosa.


Kevin A. Doble – Senior Project Manager/Government Relations/Storm Water Specialist. Kevin can be reached in Ukiah by phoning (707) 472-0541 and in Healdsburg by phoning (707) 433-6792 x 103 or by email at

Kevin is the Principal of our Ukiah Office, is responsible for marketing, client communications and project management.  Kevin is a Senior Project Manager/Government Relations/Storm Water Specialist with the firm. He spent most of his younger years around the Land Surveying and Engineering business. Growing up working for his father he started out sweeping the office and taking out the trash. As a reward he would be allowed to try out the drafting equipment and all the fancy pens and pencils. He also worked at a young age on the survey crew mainly hacking through poison oak and weeds, but as he grew older he became a good crew worker and spent many summers working in the field. Kevin has a broad range of experience from both the public and private sectors, he also spent six years working for the Sonoma County PRMD in the Grading and Storm Water Section and has specific knowledge of the county requirements as they relate to land development projects.  During his time at PRMD, Kevin was responsible for developing public policy and the plan checking and approval of hundreds of land development projects. He has been a senior designer, project manager, and has handled most of the strategic planning and government relations work within our firm since 2006. Kevin participates and many community activities in the Ukiah area. He is currently an appointed Planning Commissioner with the City of Ukiah.


James H. Hill, PE, Registered as a California Civil Engineer in 1975. Jim can be reached by phoning (707) 894-5541

Jim earned an A.A. Degree at Santa Rosa Junior College in 1969 and a B.S. Degree at Humboldt State University in 1971.  His career began at Brelje & Race in 1978 as a design engineer.  Jim became an Associate to John H. Doble & Associates in 2001 and performs civil and structural engineering design.  Jim is a member of the American Society of Civil Engineers and resides on his sheep ranch in Yorkville.

John H. Doble, PLS, Licensed as a California Land Surveyor in 1969. John can be reached by phoning (707) 483-8534

In 1970, John founded the company with an office in the City of Cloverdale.  During John’s 51 year career, he has worked on hundreds of surveys in both Mendocino and Sonoma County.  John has extensive land surveying knowledge and has been an expert witness in many legal matters.  John is married and resides on a ranch outside of Cloverdale.

Thomas Bruns, PLS - Licensed as a California Land Surveyor in 1984. Tom can be reached by phoning (707) 433-6792 x107 or by email at

Tom is the firms Senior Project Manager and the Field Staff Coordinator.  Tom has 21 years of experience directing field staff, and managing mapping projects.  He has been project manager for several notable survey projects including the Santa Rosa Creek Ecosystem Restoration and Flood Damage Reduction Feasibility Study and Town Green Village in Old Downtown Windsor.  Tom has worked on hunrdreds of projects throughout the Northbay.

Paul L. Schoch, PE, Registered as a California Civil Engineer in 1960. Paul can be reached by phoning (707) 823-4820

Paul is an associate with DobleThomas and has supervised the preparation of hundreds of plans including all phases of Town Green Village in Windsor.  Paul is a former City Engineer for Sebastopol and Cotati.  Brad and Paul have been working together since 1987 and they have been involved with many City of Cotati public works projects and private land developments.  Paul is married, has four adult children and resides in Sebastopol.

Gary Hubley, Career Photogrammetrist, President of Delta Geomatics Corporation, Gary can be reached by phoning (707) 525-9721 x12 

Gary acquired a Diploma of Photogrammetry in 1966 at the Land Survey Institute in Nova Scotia, Canada.  Gary worked for numerous companies throughout Vancouver as a Plotter Operator, Production Manager, and was Vice President of Delta Aerial Surveys, Ltd. in Richmond, B.C.  Gary purchased the Photogrammetry Division of Hogan Schoch and Associates and in 1993 and renamed it Delta Geomatics Corporation.