Assisted consulting engineer in conducting representative sampling of each site to enable accurate bench scale testing of stabilization reagents
Mechanically mixed impacted soil with Magnesium Sulfate based stabilizing agent
All work done without interrupting rail yard operation
VIASANT was contracted to assist in the development of site-specific waste sampling and hazardous material treatability studies for chemical fixation of lead impacted soils and rail road ballast materials at multiple rail yards in the State of Missouri. VIASANT assisted the RR’s selected consulting engineer in conducting representative sampling of each site to enable accurate bench scale testing of stabilization reagents. Reagents tested included Portland Cement, TSP, and Mg based materials. A Magnesium Sulfate based regent was selected due to its relatively low “effective dose” rates which were vetted during testing and enabled the project to maintain good cost controls.
Project activities included mechanically mixing impacted soil with the Magnesium Sulfate based stabilizing agent chosen based upon the successful treatability study. Reagent was added utilizing 1 CY super sacks to carefully meter out the appropriate % of reagent by weight and homogenized with a tracked excavator. All work was done without interrupting rail yard operations or creating fugitive dust common with this type of mixing. Field treatment was successful in rendering thousands of tons of material Non-RCRA hazardous. VIASANT contracted and coordinated various transportation vendors to successfully load out both post treated and non-hazardous soils to local WMI Subtitle D Landfill facilities.
