Representative Pipeline Projects
Trans Anatolian Natural Gas Pipeline Project*, Turkey - Regional Mapping and Geohazard Mitigation
GGI Principal Sean Sundermann served as the geohazard subject matter expert and led a geohazard mapping program along a 150 km stretch identified as highly susceptible to multiple unique hazards, including large-scale landslides, massive karst features and collapse, and multiple active-fault crossings. While under previous employment, Sean developed a project-specific karst classification scheme to identify hazards and appropriate mitigation at a detailed scale. Developed fault parameters for probabilistic fault displacement hazard analysis. Sean also performed fault characterization paleoseismic trenching at intersections with the North Anatolian faults and several secondary faults along the full length of the pipeline.
Wolf Creek Essential Water Pipeline* - Site Investigation
GGI Principal Sean Sundermann was the project manager and technical lead for geotechnical investigation of replacement Essential Service Water (ESW) cooling pipelines at the Wolf Creek Nuclear Generating Station, in Burlington, Kansas. Responsible for implementation and integration of onshore and marine (via jack-up barge) geotechnical drilling, sampling and lab testing, surface geophysics and design calculation packages completed under a Nuclear Quality Assurance (NQA-1) program.
Lake Powell Water Pipeline* - Regional Mapping and Fault Crossing Characterization
As part of the proposed Lake Powell Pipeline and downstream Cedar Valley Pipeline, GGI Principal Sean Sundermann developed a systematic phased approach to fault crossing evaluation. A 140-mile buried pipeline will carry water from Lake Powell to St. George, UT across Washington and Kane counties. A comprehensive fault crossing and strong ground motion assessment was needed for the pipeline across this historically seismically active region. Seismic hazard assessment included mapping and evaluation of fault location, recurrence, and magnitude as parameters for kinematic analysis, mitigation design and risk assessment for the pipeline.
* Projects prior to GGI