Our Team

Kelly Henderson, PLS
Managing Director


Phone: 405.366.8541

Kelly Henderson has over 34 years of experience in the surveying industry. His technical expertise and extensive experience have been applied to a broad range of projects: engineering design, architectural, boundary, highway design, control networks, subdivisions, and construction staking.

Marty Sullivan, RPLS
Senior Project Manager

Phone: 405.366.8541

Marty Sullivan has over 34 years of experience in surveying. This experience runs the gamut including, boundary analysis, topographic design surveys, calculations for construction staking, as well as survey crew oversight and scheduling. Marty has many years of experience working on transportation and highway, residential and commercial developments, and municipal infrastructure projects.

Steve Lemke, PLS, P.E.
Executive Director


Phone: 405.366.8541

Steve Lemke is a registered Professional Engineer and Land Surveyor with over 35 years of experience in the civil engineering, land surveying, and environmental fields. He has had full project management and design responsibilities for municipal, commercial, industrial, and residential site development projects and has been a service provider and consultant for a wide range of project types and market sectors. He has a Master's in Geographical Information Systems from the University of Oklahoma and a Bachelor of Science Agronomy from Oklahoma State University.

Danny Cahill, PLS
Senior Project Manager


Phone: 405.366.8541

Danny Cahill is a Licensed Professional Land Surveyor with 40 years of experience in a broad range of surveying services and project management. This experience includes the leadership and management of field survey crews and drafting personnel in the execution of boundary surveys, topographic design surveys, ALTA/NSPS title surveys, utility surveys, and construction staking. Cahill heads up Lemke Land Surveying's Tulsa office.

Gary Smith
Creative Technology Manager


Phone: 405.366.8541

Gary Smith has 24 years of mapping and database systems design and integration experience with an emphasis in Environmental, Civil and Surveying disciplines. Gary has had management and design responsibilities for municipal, commercial, industrial, and residential geospatial projects. Project experience activities include GIS project development, database design, website development, reduction/processing of survey data, and custom application design.

Tommy Martin
Senior Project Manager


Phone: 405.366.8541

Tommy Martin has over 20 years of experience spanning a variety of positions in the surveying and engineering industries. He has served in roles that had him responsible for project management, contract management, contract negotiations, procurement, design, and billings for commercial and residential developments. In addition, to management roles, Tommy has a wealth of experience in environmental work ranging from environmental studies, geotechnical reports, NEPA investigations, Phase I/II environmental site assessments, and health, safety and environmental surveys.

Seth Lemke


Phone: 405.366.8541

Seth Lemke is responsible for the management, and financial coordination of all survey projects. Seth's continual involvement and understanding of surveying has made him an integral part of the business management team. 

Tony Allard
Construction Staking Manager


Phone: 405.366.8541

Tony Allard has been surveying for 28 years. He has specialized in Construction Staking. Working on Highways and Bridges, Residential Developments, Commercial Developments, and Municipal Infrastructures. Putting together cost proposals and keeping up with client relations as well as overseeing all the construction staking data and office calculations.

Matt Barnum
Senior Project Manager


Phone: 405.366.8541

Matt Barnum, PLS is a Senior Project Manager. He is a registered professional land surveyor with over 16 years of experience as a civil designer and land surveyor. Matt has a wide variety of experience with designer responsibilities for residential developments, commercial site developments, water & sewer systems, grading/paving/drainage plans, and roadway design. Matt has managed and coordinated the collection of field survey data, data reduction, and survey plat preparation for Boundary Surveys, Topographic Design Surveys, ALTA/ACSM Land Title Surveys, Subdivision Platting, and Construction Staking.  Matt is proficient in AutoCad Civil 3D software.

Beau Winfrey


Phone: 405.366.8541

Beau Winfrey is a professional land surveyor with Lemke. With over 20 years in the business, Beau has a wide variety of experience with residential developments, commercial site developments, municipal utilities, transmission and gathering system pipelines, and boundary and topographic design surveys. He has managed and coordinated the collection of field survey data, data reduction, and survey product preparation for construction staking, as-built, boundary, topographic design, and ALTA/NSPS surveys.