<p><p><strong>References:<br></strong><em>Mauer (2001)</em></p><p><strong>Method Summary</strong></p><p>The installation of the column should be monitored to ensure the column has been installed in the correct location and to the correct depth. This can be done with manual or automated systems. One example of an automated system is a pile driver equipped with GPS locating equipment. This can also provide documentation of the installation for quality assurance purposes.</p><p><strong>Accuracy and Precision</strong></p><p>Location and depth measurements are easily taken in an accurate and precise manner.</p><p><strong>Adequacy of Coverage</strong></p><p>Each column is monitored easily and economically.</p><p><strong>Implementation Requirements </strong></p><p>GPS units are widely used and traditional surveying equipment measurements are acceptable.</p><p><strong>General Comments</strong></p><p>Monitoring and recording the depth and location of each column installation should be used in all applications of GECs.</p></p>