2017-04-14_REPORT - M1974004

• Permit No: M1974004
• IBM Index Class Name: REPORT
• Doc Date: 4/14/2017
• Doc Name: Annual Fee/Report/Map
• From: Martin Marietta Materials
• To: DRMS
• Annual Report Year: 2017
• Email Name: MAC
• Media Type: D
• Archive: No

Martin Marietta Materials
Spec-Agg 2017 Annual Report
2017 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..................................................................................................... 10
7.0 CONCLUSIONS AND RECOMMENDATIONS.............................................................................11
8.0 REFERENCES...............................................................................................................................13
February 27,2017 Page i Lachel&Associates, Inc.
Project 161364003 00 ©2017 All Rights Reserved