EP Breaux Substation
GROUP Deep Foundations was contracted by EP Breaux Electrical to install a new electrical substation in Oklahoma for GRDA. The project consisted of over 1500 cubic yards of concrete for drilled piers what were terminated several feet into hard rock with a RQD value of over 90%. GROUP utilized high torque drilling equipment and rock drilling techniques including core barrels and heavy rock augers. When sandy ground conditions were encountered, GROUP used a virbo hammer and casing technique to penetrate the sand and seal off the shaft so that rock drilling could commence.