Insight provides utility designating and locating services in compliance with CI/ASCE 38-02, Standard Guideline for the Collection and Depiction of Existing Subsurface Utility Data.
Quality Level D information comes solely from existing utility records. This quality level is usually established with information prior to utility designating.
Quality Level C involves surveying visible above-ground utility facilities and correlating this information with existing utility records. This quality level is also usually established prior to utility designating.
Quality Level B involves the use of surface geophysical techniques to determine the existence and horizontal position of underground utilities. This quality level is usually established with utility designating and mapping.
Quality Level A involves the use of nondestructive digging equipment at critical points to determine the precise horizontal and vertical position of underground utilities, as well as the type, size, condition, material and other characteristics. This quality level of information is usually established with utility locating, using vacuum excavation technology, either air vacuum or hydro excavation techniques.