Infrasense Completes Extensive SUE Survey in Scenic New Hampshire Mountains

Infrasense Completes Subsurface Utility Engineering (SUE) Survey in New Hampshire

Infrasense, a leader in subsurface surveying, has recently conducted an extensive subsurface utility engineering (SUE) survey in the picturesque mountain region of New Hampshire. This project focused on assessing the areas around three specific culvert alignments, strategically located in an environment characterized by skiing landscapes and diverse terrain.

The SUE survey employed two advanced techniques: electromagnetic induction (EMI) and 3D ground penetrating radar (3DGPR). These methods were pivotal in gathering comprehensive data about the subsurface utilities, aiming to identify their locations and conditions accurately. The collected information not only pinpoints utility placements but also highlights any potential obstructions that could pose challenges for future construction or maintenance projects.

Working diligently in a single day, the Infrasense team used a side-by-side vehicle setup to facilitate simultaneous data acquisition. The surveyed area showcased various conditions, from gravel roads to lush landscapes, thereby providing a rich context for the survey methodology.

To execute the EMI testing, the team opted for advanced tools such as the Dynatel 2573M and Subsite Electronics 750 R/T. The active mode of these devices enabled pinpointing and tracing subsurface utilities. When the technical setup is in active mode, it transmits signals through ferrous utilities and designated metal pathways, enhancing traceability at various frequencies. Conversely, the passive mode focuses on active AC power within utilities, interpreting both 50/60 Hz frequencies and dormant electric lines.

The 3D GPR survey, another critical element of this project, involved using an 8-channel pushcart GPR system equipped with up to 18 antennas, optimizing data collection and depth penetration reaching approximately 12 feet in favorable conditions. This setup allowed for meticulous scanning, ensuring comprehensive coverage of the area and revealing vital information about the subsurface structure, including the depth and position of pipes.

Equipped with precise RTK GPS for geolocation, the team carefully recorded every utility identified during the collection process. This information was subsequently marked on-site using paint, creating a visible reference for future assessments. By overlaying the processed EMI mapping with the GPR data, the team produced detailed maps that highlighted the locations of utilities and their respective conditions, significantly aiding in future planning and development efforts.

The successful culmination of this SUE survey speaks volumes about Infrasense’s commitment to utilizing cutting-edge technologies to tackle challenging subsurface evaluations. By combining the strengths of EMI and GPR, the firm not only enhances the efficiency of infrastructure projects but also fosters safety and accuracy in deploying utilities.

Since its inception in 1987, Infrasense has dedicated itself to pioneering innovative methods in nondestructive evaluation, helping clients across a spectrum of industries understand and manage their subsurface conditions efficiently. For more information about their services and advancements in the field of subsurface detection, you can visit their official website at Infrasense.

Infrsense's proactive approach and utilization of advanced technology not only streamline processes but set a new standard in the realm of subsurface utility engineering, confirming their place in the industry's forefront.