Jet grouting rig installing a column pumps, slurry mixers, and vertical and horizontal silos. Crews installed a total of 167 columns between October 2021 and April 2022. Upon completion of the jet grout curtain, the columns were left to cure. Subsequently, the contractor ran a second pump test, measuring the same parameters as before. The pump test data was analyzed and USACE expressed its satisfaction with the hydraulic conditions after curtain installation as documented by the test results. Project Construction Results Construction reached completion in April 2022 to the full satisfaction of the owner and none of the 265 panels comprising the original cutoff wall required any remediation work, nor did any of the additional panels installed at the two windows. The cutoff wall far exceeded the required minimum thickness set by USACE at 24 in (610 mm). The average hydraulic conductivity of the cutoff wall, tested on wet grab samples, was two orders of magnitude lower than Jet grouting plant DEEP FOUNDATIONS * SEPT/OCT 2023 * 95