Deep Soil Mixing for Foundation Stabilization

The contract involves the execution of deep soil mixing to stabilize liquefiable soils beneath a dam embankment, with the primary objective of mitigating seismic deformation risks and reinforcing the puddle core to ensure structural integrity under earthquake conditions. This geotechnical intervention is critical for long-term dam safety, particularly in seismically active regions, and requires specialized equipment and expertise to achieve uniform soil improvement at depth. The work must be completed to exact engineering specifications to ensure effective load transfer and prevention of post-event settlement or slope failure. The solicitation is classified as a subcontract under NAICS code 238990, indicating it is for Other Specialty Trade Contractors, and is managed by the Department of Defense under the provisional agency name W2SR Endist Caribbean. The place of performance is in San Juan with a ZIP code of 00918, positioning the project in a high-risk coastal environment where seismic and hydrological factors intersect. Bids must be submitted by July 24, 2026, at 6:00 PM, with the opportunity posted on July 23, 2026, indicating a very short turnaround window requiring immediate readiness in planning, mobilization, and resource allocation.