GET provided soils explorations and geotechnical engineering studies for a 5-mile long, 36-inch and 48-inch sanitary sewer force main extending from the Eslava Creek Pump station to the Williams Waste Water Treatment Plant for Mobile Area Water and Sewer. The pipeline provides redundant sewer service through an environmentally sensitive area. It was installed using a combination of horizontal directional drilling and open cuts. The pipeline route crosses beneath Interstate 10, multiple railroad tracks, and two major arterial roadways. GET performed approximately 40 standard penetration test soil borings that extended to depths ranging from 15 feet to 100 feet. In addition, selected soil samples that were recovered from the boring operations were subjected to laboratory tests to determine soil classifications and certain mechanical properties to aid in the design and construction of the pipeline. Geotechnical engineering studies included developing capacity estimates for H-piles planned for supporting certain pipe joints. GET provided engineering support and construction materials testing through the construction phase of the project.