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Mr. Ed Baker May 1, 2003 Page 2 The fast grout stage was placed through the bottom of the PVC pipe. The AQ rods were then decoupled from the PVC pipe and the remaining grout was placed from the AQ rod. The drillers reported that as the AQ rod was decoupled from the PVC pipe, and was being raised to the next grout level, the AQ rod became detached from the wireline and dropped uncontrolled for about 20 ft. The AQ wireline rod became plugged with grout at about 1480 ft bgs and required removal and cleaning. Therefore, re-insertion of the AQ rod into the drill hole was unavoidable. The driller also reported that the AQ rod caught on the cable at approximately 1390 ft bgs. The borehole was eventually grouted to within about 6 ft from surface. The casing was filled from about 6 ft bgs to about 2 ft bgs with clean rounded gravel. Eventually the installation will be completed and protected by covering with a plastic enclosure. Morrrroxnvc The TDR cable ends that went downhole were fitted with high-pressure stainless steel end caps having two 2000-psi O-rings. Prior to grouting, water pressures acting on the cables did not exceed 700 psi based on the water level in the well. The TDR cables were monitored on their spools after the end caps were in position. Those data aze, as expected, showing cable ends indicated at appropriate depths by a strong inflection to more positive reflection coefficients. The four TDR cables were monitored again after the base of the TDR string was at the appropriate total depth (1823 ft bgs). Those data were not completely valid due to problems with the cable connectors. Once the connector problem was remedied, the four cables were monitored, with the fast lift (180 ft) of grout placed. These readings are designated `ire-grout," although there was in fact a small lift of grout in place. The pre-grout readings aze presented along with the baseline readings on Figures 2 through 5. The pre-grout readings show strong cable end reflections that aze positive due to an open circuit at the cable ends. The crimps did not show up as well as expected on the pre-grout readings. It appears that the connector problem might have contributed enough attenuation to mask the crimps. However, there is yet the possibility that the crimps may be better revealed with further data processing. Baseline readings were collected on the Monday (4/21/03). These readings revealed that between the time the first lift of grout was placed and the following day, three of the four cables had been compromised. The baseline data from TDR3 showed that the cable was intact with strong cable end and crimp reflections. TDRl, TDR3, and TDR4 showed strong negative reflections that aze indicative of a closed circuit. The closed circuit, and the geometry of these reflections, suggests that water has infiltrated the dielectrics of the three compromised cables. However, Agapito Associates, Inc. is continuing to analyze the data, and no conclusions regazding the cause of cable failure have been established. Subsequent TDR readings (4/25 and 4/29) on the four cables suggest that the reflection signals for all four cables have not changed significantly since the baseline reading. However, these data have not been post-processed.