PAS 128 is a Publicly Available Specification for the detection and mapping of underground utilities and services. PAS 128 is the result of a collaboration across the industry to provide a uniform standard to the client. It comprises of varying methods of utility detection…

Survey Level A

Underground utilities are visually observed and located at a manhole or inspection chamber, or are partially excavated by hand dig or vacuum excavation trial holes.

Adien are fully committed to the implementation of PAS128 and making sure the client receives the highest quality survey possible.

Adien are the UK’s leading Utility Detection and Mapping Services company, with unrivalled global experience, providing a full range of services towards the detection of underground utilities and features to the highest quality and continues to strive to maintain these standards.

Survey Level B (Recommended)

A site visit is undertaken and the underground utilities are located using various geophysical methods including radio frequency location and ground penetrating radar. This can be done alongside the two previous levels to increase the accuracy of the survey.

Survey Level C

A site visit is undertaken and the existing records are confirmed with topographical features such as water/gas valves, visible scarring from repairs etc.

Survey Level/Type D

This is a desktop records search where underground utilities are identified through existing records (statuary undertaker drawings).