Business Details
35 Years
experience
Emergency
services
Precision Land Surveying Services in Macon, GA
Donaldson Garrett & Associates (DG&A) is a leading land surveying and site design consulting firm headquartered in Macon, GA, with a branch in Charlotte, NC. Established in 1991, we serve public and private clients across diverse industries, including environmental engineering, utilities, federal agencies, and commercial development. Our team of 20 professionals holds registrations in 11 states and specializes in hazardous site surveying, GPS technology, construction stakeout, and forensic litigation support. We integrate cutting-edge tools like LIDAR drones and digital total stations to deliver precise, cost-effective solutions.With nearly four decades of collective experience, our OSHA-certified crews excel in high-risk environments, while our quality assurance program ensures regulatory compliance and technical excellence. We prioritize client success through personalized service, safety leadership, and a commitment to environmental stewardship. DG&As accolades include multiple state and national awards for surveying accuracy and innovation.
Services
Land Surveying
Construction Stakeout
Hazardous Site Surveys
GPS Mapping
Mine Surveying
Optical Tooling
Forensic Litigation Support
Topographic Surveys
Utility Easement Surveys
Pipeline Surveys
Details
- Year established: 1991
Highlights and features
- We have 30+ years of experience in land surveying with licensed professionals in 11 states.
- Our OSHA-certified crews specialize in hazardous waste site surveying and remediation.
- We utilize advanced GPS, LIDAR drones, and optical tooling for precise measurements.
- Our quality assurance program ensures compliance with DOT and federal agency standards.
- Award-winning expertise in forensic litigation support and complex construction projects.
Associations and certifications
- OSHA
- National Society of Professional Surveyors
Services
Land Surveying
DG&A provides comprehensive land surveying for boundary, topographic, and utility mapping. Our services support site development, legal documentation, and construction planning. Using GPS and LIDAR technology, we deliver high-accuracy data for commercial, environmental, and infrastructure projects.
Construction Stakeout
Our construction stakeout services ensure precise implementation of engineering designs. We support power plants, pipelines, airports, and commercial developments with layout verification, elevation control, and as-built documentation to meet strict safety and regulatory standards.
Hazardous Site Surveys
OSHA-certified crews conduct hazardous waste site surveys for remediation projects. We provide contamination mapping, sampling support, and compliance documentation to ensure safe, legally compliant environmental cleanup operations.
GPS Mapping
DG&A uses NAVSTAR GPS technology for geodetic coordinates and high-precision site mapping. Our RTK receivers enable real-time 3D data collection, reducing field time and costs while improving accuracy for mining, GIS, and photogrammetric projects.
Forensic Litigation Support
We create courtroom-ready survey data for accident sites and property disputes. Services include 2D/3D plats, digital photography, and expert testimony to support legal proceedings with precise spatial analysis.
People
Tommie Donaldson
Co-Founder
Co-founder with decades of experience in land surveying. Served on Georgia's State Board of Registration for Professional Engineers and Land Surveyors. Instrumental in establishing DG&A's quality assurance programs.
Jim Garrett
Co-Founder
Co-founder leveraging expertise from top ENR engineering firms. Directed DG&A's integration of advanced surveying technologies and expansion of federal agency contracts for environmental and infrastructure projects.
Phillip Brown
Vice President
Vice President and former board member of SAMSOG. Leads technical training programs and ensures compliance with state and federal surveying standards across DG&A's multi-state operations.
Questions
What industries do you serve?
We serve environmental engineering firms, utility companies, federal agencies, commercial developers, and industrial clients nationwide.
Are your surveyors certified?
Our team holds professional registrations in 11 states and includes OSHA-certified hazardous waste site surveyors.
Do you handle emergency projects?
Yes, we provide rapid response for time-sensitive surveys, including hazardous site remediation and equipment alignment emergencies.
What technology do you use?
We employ GPS systems, LIDAR drones, optical tooling, and AutoCAD Civil 3D software for precise data collection and modeling.
Can you support legal cases?
Our forensic litigation services provide courtroom-ready survey data, including 3D plats and digital evidence documentation.
