Detected services are discreetly marked on the ground prior to being surveyed with either GPS or total station. The completed surveys are downloaded, processed and presented in a variety of formats including AutoCAD and paper. When existing topographic survey information is not available then OS 1:2500 mapping is employed as a back cloth to the utility survey with permanent control left on site. The download section of the website provides a fact sheet on the achievable accuracies of the available technologies as well as example surveys.