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NA N138
TRD Soil Mixing Method (New Orleans, LA)

Dennis Boehm, P.E.

The Trench Remixing Deep (TRD) soil mixing method is a pioneering method of deep soil mixing developed in Japan for the construction of continuous and highly uniform cutoff walls without the need for an open trench.

TRD mixing has been used on over 300 projects in Japan for excavation support, groundwater barriers, liquefaction mitigation, soil improvement, and pollution containment.

To date, TRD mixing has been used on only three projects in the United States: a test cell in Long Beach, California for seawater intrusion barrier in 2004, a groundwater barrier at a wastewater treatment plant in Lincoln, California in 2005, and presently at Herbert Hoover Dike surrounding Lake Okeechobee in southeastern Florida.

Come learn more about TRD method, capabilities, and quality control testing with Dennis Boehm, Chief Engineer with Hayward Baker Inc.

If you have already attended this seminar and would like to obtain a Certificate of Completion free of charge, please click on the following link:


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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.

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