The Client’s project included expanding a liquefied natural gas (LNG) terminal to accommodate three LNG trains, a typical gas pretreatment unit, and a dock. Before construction could begin, the ground needed to be reinforced to support the complete turnkey LNG facility.

ENTACT performed mass stabilization of over 2.3 million cubic yards of soft dredged sediment and fill soils. We accomplished in-situ stabilization with 16 excavators working atop timber mats, and the pneumatic delivery of Portland cement via custom-fabricated conveyance boxes; and performed to 8.0 feet bgs under future foundation structure areas and 5.0 feet bgs from finish grade in other remaining areas. All cement-improved soils and sediment achieved a minimum unconfined compressive strength (UCS) of 35 psi.

Before stabilization, we cleared and grubbed the site; constructed access roads; performed stabilization pilot tests to confirm correct soil solutions; excavated and hauled more than 925,000 cubic yards of soil and material from 26 cut areas; and backfilled and compacted over 1 million cubic yards of soil and material within 31 distinct areas.

ENTACT completed the work in 11 months, within budget and ahead of schedule.