• Value Engineering replacement for foamed concrete as lightweight fill
• Redevelopment of existing industrial building required backfilling existing tunnels under slab
• Foundation soils consisted of soft compressible material
• Contractor was able to install UL-FGA without enlisting a specialty subcontractor
• Self-performance allowed contractor to meet project schedule
• Once tunnels were filled with UL-FGA and compacted, a new concrete slab was constructed over the UL-FGA-filled tunnels and adjacent areas