Established in the 1970s and operating since then as a leading geotechnical specialist contractor, GFWA is a member of Soletanche Bachy Group. This has given the company a unique status to provide a full range of optimised specialist geotechnical services based on its local knowledge and global expertise. GFWA services include: Cut-off and Permeable Trench Systems Bentonite Cement Walls Grouting Slurry Walls Deep Foundations Barrettes Bored and CFA Piles Displacement Piles Driven Piles Micro Piles Screw Piles Ground Retention Diaphragm Walls Jet Grouting and Permeation Grouting Secant and Contiguous Piles Sheet Piles Soft/Hard Walls Soil and Rock Anchors Soil Nails Soil Improvement and Soil Inclusions Controlled Modulus Columns (CMC) Cavity Grouting Compaction Grouting Compensation Grouting Dynamic Compaction Dynamic Replacement Jet Grouting Permeation Grouting Soil Mixing Vacuum Consolidation Vertical (Wick) Drains Vibro Compaction Vibro Replacement (Stone Columns)