Geotechnical Engineering & Construction Materials Testing Services Since 1946, providers of innovative, timely, and cost effective geotechnical solutions in New Orleans, Southeast Louisiana, and the Gulf Coast Region. Eustis Engineering is the oldest geotechnical engineering firm in Louisiana and one of the first to practice soil mechanics in the southern United States. With offices in Metairie and Lafayette, Louisiana and Gulfport Mississippi. Our firm offers an array. Soil Testing,Civil Engineers,Foundation Engineers,Testing Lab,Geotechnical Engineers,Consulting Engineering Firm.