Nathaniel D. Landsperger, P.E.

Mr. Landsperger is a Senior Consultant for Engineering Systems Inc. (ESi). He has over 20 years of consulting experience with the analysis, design, and construction of geotechnical, structural, civil, and drainage systems with an emphasis on civil sitework and civil infrastructure as well as rail system infrastructure design and construction. He has performed engineering and forensic studies for the inspection, assessment, and repair designs of damaged, distressed or failed structural elements, including residential and commercial properties, roadway and railroad structures, culverts and storm drain piping, walls, tunnels, and marine structures. His experience includes detailed reviews of construction documents, construction materials, and construction practices, as well as engineering and design of site grading, retaining walls, foundation underpinning, drainage systems, pavements, earthwork volumes, and bridge repairs. In the residential and commercial property market, he has assessed property damages related to water intrusion, soil and/or foundation movement, expansive clays, frost heave, site drainage/flooding, site grading, and inadequate construction practices

Prior to joining ESi, Mr. Landsperger worked for over fourteen years as manager of rail engineering and construction. His workload included multi-disciplinary rail projects involving railroad track bed stabilization, landslide assessment and mitigation, rail line capacity feasibility studies, geotechnical studies, stormwater modeling and management, bridges, tunnels, culverts, retaining walls, passenger stations, marine and port facilities, industrial facilities, mines, intermodal facilities, railyards, and mainline track. Mr. Landsperger is also very familiar with typical rail construction costs for bridges, tunnels, track, drainage systems, as well as specialty applications like slope stabilizations, rockfall mitigations, grouting, and structural underpinning. He has experience working in challenging geotechnical conditions such as landslide-prone regions, rockfall hazard areas, coastal and/or riverine settings, karst (sinkhole) topographies, and on swamp/soft ground soil deposits. Mr. Landsperger has been involved in railroad emergency response engineering related to derailments, landslides, rockfalls, sinkholes, washouts, flooding, bridge and tunnel distress/failures, drainage culvert distress/failures and has informed clients of safe, practical, and effective means to restore rail damaged infrastructure to a safe operating condition.

In addition, Mr. Landsperger has authored several engineering standards used by Class 1 railroads and has provided peer review analysis of construction plans and documents for bridges, tunnels, drainage systems, retaining walls, and civil earthworks to assess for feasibility, fatal flaws, and construction-related schedule or cost risks. Mr. Landsperger has performed peer review analysis of construction contractor work plan submittals for heavy crane lifts, pile driving and/or blasting vibration assessment, monitoring, and mitigation from pile driving and/or rock blasting, temporary shoring design, soft and hard ground tunneling, pipe jacking/boring, settlement predictions and monitoring, and job hazard analysis. He has provided forensic analysis related to damages caused by blasting or pile driving vibrations, shoring system failures, drainage, temporary or uncontrolled earthworks. Mr. Landsperger has also led engineering due diligence reviews to support and educate potential investors in evaluating the overall short and long-term risks with purchasing and operating railroad lines. In addition to track infrastructure, these due diligence reviews also included reviews of inspection and maintenance practices, safety practices, equipment and rolling stock management, and operating practices.