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STRUCTURAL GEOLOGY EVALUATION <br />OF THE SPECIFICATION AGGREGATES QUARRY <br />(2002 ANNUAL REPORT) <br />Table of Contents <br />1.0 Introduction and Background <br />2.0 Data Collection <br />3.0 Field Observations <br />4.0 Analysis of Structural Discontinuities <br />4.1 Evaluation of Discontinuity Measurements <br />4.2 Wedge Stability Analysis <br />4.2.1 East Wall <br />4.2.2 North Wall <br />4.2.3 West Wall <br />4.2.4 South Wall <br />5.0 Conclusions <br />6.0 References <br />Tables <br />Table 1. Representative Quarry Wall Orientations <br />Table 2. Representative Discontinuity Orientations <br />Figures <br />Figure 1. Approximate Plan of Spec-Agg Quarry <br />f=figure 2. Pole Representations of 500 Mapped Discontinuities <br />Figure 3. Contouring to Determine Prominent Structural Geologic Features <br />Figure 4. Poles Representing Concentration Centers of the Discontinuities <br />Figure 5. Stereonet Plot -East Wall <br />Figure 6a. Stereonet Plot -Northeast Wall: 45 degrees slope face <br />Figure 6b. Stereonet Plot -Northeast Wall: 34 degrees slope face <br />2002 Spec-Agg Annual Report Page 1 <br />