Gardner & Peterson Associates, LLC has over 50 years of surveying experience within the State of Connecticut. We utilize state of the art surveying equipment and technology. Our field staff is Occupational Safety and Health Administration (OSHA) certified and highly experienced. Topographic Survey: A survey which depicts the configuration of the earth's surface (ground) and the location of natural and artificial objects thereon. Gardner & Peterson Associates, LLC also conducts surveys to provide amendments of Flood Insurance Rate Maps for individual properties.