Meet the Team

Derek Zeman, PSM RPLS

dzeman@zemangroup.comDirect - (561)-223-8035

With 34 years of Surveying Experience in Florida, Derek began his career on a survey crew after graduating high school. Quickly progressing to Crew Chief and then Field Crew Supervisor, he earned his Florida Professional Surveyor and Mapper (PSM) license in 1996 and Texas Registered Professional Land Surveyor (RPLS) license in 2012. Derek has managed all phases of survey projects for both public and private sector clients specializing in transportation, design surveys, subsurface utilities, and Mobile LiDAR. He is currently responsible for Business Development, providing expert witness testimony and overall company management. In addition to his day-to-day responsibilities, he also serves on the Florida Atlantic University Geomatics Engineering Advisory Council.

Lee Powers, PSM

Vice President
lpowers@zemangroup.comDirect - (561)-223-8039

Lee graduated from Purdue University in 2005 with a Bachelor's Degree in Land Surveying & Geomatics Engineering and has been surveying in South Florida for the last 16 years. He has performed Construction Stakeout and As-builts, Right of Way Mapping, Geodetic Control, ALTA/NSPS, Boundary, Topographic (both acreage and coastal) and Route/Design surveys. He has extensive Project Management experience for large-scale projects and continuing service type contracts for both public and private sector clients. He is knowledgeable in the use of a wide range of state-of-the-art surveying equipment, methods and technologies with a particular focus on static, mobile & aerial LiDAR and GIS. Lee also serves as the Vice President of the Palm Beach Chapter of FSMS.

Eric Detassis, PSM

Project Surveyor
edetassis@zemangroup.comDirect - (561)-223-8068

Eric brings over 18 years of land surveying and project management experience in the field and office. He brings thorough knowledge of principles and procedures of ALTA, Topographic, Horizontal and Vertical Control, Boundary/Right-of-Way, Construction, Sectional, Static/Mobile LiDAR projects and NGS high order leveling. Clients have consisted of private Land Developers (Minto Communities), Counties, Cities, State Agencies (Florida Department of Environmental Protection, FDOT (Districts 2, 4, 6, 7 and Florida's Turnpike), Drainage Districts (Lake Worth Drainage Districts and South Florida Water Management District), Seaports (Port Everglades, Port of Miami, Port of Palm Beach) and Power Utility Companies (Florida Power & Light and Florida Keys Electric Cooperative). He brings a comprehensive skill set of processing and performing calculations using various CAD platforms to satisfy the diverse range of clients.