2017-08-08_REVISION - M1973021

• Permit No: M1973021
• IBM Index Class Name: Revision
• Doc Date: 8/8/2017
• Doc Name: Request for Technical Revision
• From: Aggregate Industries GEI Consultants, Inc.
• To: DRMS
• Type & Sequence: TR5
• Email Name: MAC
• Email Name: WHE
• Media Type: D
• Archive: No

Table of Contents
1. Introduction ................................................................................................... 1
1.1 Site Description...................................................................................... 1
1.2 Scope of Work ....................................................................................... 2
1.3 Geology .................................................................................................4
1.3.1 Regional Geology...................................................................... 4
1.3.2 Site Geology.............................................................................. 4
2. South Quarry Investigations........................................................................ 5
2.1 Pre-2017 Geotechnical Investigations ................................................... 5
2.2 2017 Geotechnical Investigation............................................................ 6
2.3 Annual Report Investigations................................................................. 7
2.3.1 Foliation ..................................................................................... 8
2.3.2 Primary Northwest Trending Joint Set....................................... 8
2.3.3 Primary Northeast Trending Joint Set........................................ 8
2.3.4 Secondary North Trending Joint Set.......................................... 8
2.3.5 Secondary South Trending Joint Set......................................... 9
2.3.6 Fault and Associated Shear Zone.............................................. 9
2.3.7 Rock Mass Ratings.................................................................... 9
2.3.8 Groundwater.............................................................................. 9
3. Laboratory Analysis.................................................................................... 11
3.1 Pre-2017 Laboratory Analyses ............................................................ 11
3.2 2017 Laboratory Analysis .................................................................... 11
4. Highwall Stability Analysis......................................................................... 13
4.1 Kinematic Analyses ............................................................................. 13
4.1.1 Planar Failure .......................................................................... 14
4.1.2 Wedge Failure ......................................................................... 14
4.1.3 Toppling Failure....................................................................... 15
4.2 Global Stability Analysis....................................................................... 15
4.2.1 SLOPE-W................................................................................ 18
4.2.2 FLAC/Slope ............................................................................. 18
5. Results......................................................................................................... 19
5.1 Kinematic Analyses ............................................................................. 19
5.2 Global Stability Analysis....................................................................... 21
5.2.1 SLOPE/W................................................................................ 22
5.2.2 FLAC/Slope ............................................................................. 25
6. Recommendations...................................................................................... 27
6.1.1 Highwall Recommendations .................................................... 27
Aggregate Industries Morrison Quarry GEI Consultants, Inc.
South Quarry Highwall Design Technical Revision ii August 2017