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Januarv 15, 12008 <br />a <br />.- -1cr <br />a <br />? rl <br />to <br />N <br />Page <br />Figure 4. Stress-Strain Curve for Q-Floor Mudstone Sample from 07-G17-CCR from <br />227 ft below Collar <br />Strength estimates from these tests may vary from the in situ rock mass strengths for the <br />following reasons. <br />• -Nests are performed on small intact samples not containing natural fractures. <br />• Frail samples from disturbed rock are difficult to prepare and generally do not survive liar <br />testing. <br />The laboratory test results must be adjusted to account for these two factors. <br />Characterization from the borehole logs are used to adjust these intact rock properties to those <br />expected in situ. Adjustments to strength and deformability properties account for the natural <br />fracturing and induced disturbance from the landslide. <br />Agapito Associates. Inc. <br />Arial Strain