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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />3.5 Surface Geophysics Program <br /> <br />A surface geophysical exploration program was conducted at <br />Gurley Reservoir during late April and early May 1987 by James K. <br />Applegate Associates, Inc. of Lakewood, Colorado. The purpose of <br />the geophysical program was to provide general subsurface <br />information covering the full length of the embankment and <br />foundation which would then be correlated with the available <br />borehole data to provide a more continuous picture of existing <br />subsurface conditions. Self potential and D.C. resistivity profiles <br />and soundings were conducted along three lines roughly parallel to <br />dam centerline. The locations of these lines are shown on Figure 4. <br />The results of the self potential survey are shown in the form of <br />equipotential contours on Figure 7 and are included along with the <br />results of the D.C. resistivity survey in Appendix E. <br /> <br />3.6 Performance Monitoring Program <br /> <br />A performance monitoring program was initiated following <br />completion of the subsurface exploration program. The purpose of <br />this program was to evaluate the groundwater regime by collecting <br />groundwater level and spring flow data from the seven standpipe <br />piezometers and eight weir stations. The locations of the standpipe <br />piezometers, springs and weirs which were monitored as part of this <br />program are shown on Figure 4. The groundwater level and spring <br />flow data collected to date are included in tabular and graphic <br />form in Appendix I. <br /> <br />-g- <br />