2016-04-14_REPORT - M19741004

• Permit No: M1974004
• IBM Index Class Name: Report
• Doc Date: 4/14/2016
• Doc Name: Annual Fee, Report & Map
• From: Specification Aggregates Quarry
• To: DRMS
• Annual Report Year: 2016
• Email Name: MAC
• Media Type: D
• Archive: No

Martin Marietta Materials
Spec-Agg 2016 Annual Report
2016 ANNUAL REPORT
STRUCTURAL GEOLOGY EVALUATION
SPECIFICATIONS AGGREGATE QUARRY
GOLDEN, COLORADO
TABLE OF CONTENTS
1.0 INTRODUCTION..............................................................................................................................1
2.0 PURPOSE AND SCOPE OF WORK...............................................................................................1
3.0 LOCATION AND GEOLOGIC SETTING.........................................................................................2
4.0 MINING PLAN AND PROGRESS ...................................................................................................3
5.0 FIELD OBSERVATIONS.................................................................................................................4
6.0 ANALYSIS OF STRUCTURAL DISCONTINUITIES.......................................................................5
6.1 Evaluation of Discontinuity Measurements.........................................................................5
6.2 Slope Geometry...................................................................................................................6
6.3 Friction Angle.......................................................................................................................7
6.4 Kinematic Analysis..............................................................................................................7
6.4.1 Potential Failure Modes..........................................................................................7
6.4.2 East Walls...............................................................................................................8
6.4.3 Northern Walls........................................................................................................9
6.4.4 West Walls................................................................................................ ...... ....10
6.4.5 Southern Walls.....................................................................................................11
7.0 CONCLUSIONS AND RECOMMENDATIONS.............................................................................11
8.0 REFERENCES...............................................................................................................................13
February 8, 2016 Page i Lachel &Associates, Inc.
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