<p><p><strong>References:<br></strong><em>Bruce et al. (2001)</em></p><p><strong>Method Summary</strong></p><p>Seismic surveys can be used to determine whether there has been an overall improvement in the soil mass. This is typically done by cross-hole tomography. This QC/QA procedure is very rarely done and relatively expensive.</p><p><strong>Accuracy and Precision</strong></p><p>Seismic surveys are subject to interpretation.</p><p><strong> </strong><strong>Adequacy of Coverage</strong></p><p>The number of measurements in seismic surveying necessary to get an accurate picture of the soil improvement is large.</p><p><strong> </strong><strong>Implementation Requirements </strong></p><p>Seismic surveys are expensive and difficult to perform.</p><p><strong> </strong><strong>General Comments</strong></p><p>Seismic surveys can be used on any jet grouting operation. However, they are rarely performed and are relatively expensive.</p></p>