2008-04-30_REPORT - M1973021 ‎(3)‎

• Permit No: M1973021
• IBM Index Class Name: REPORT
• Doc Date: 4/30/2008
• Doc Name: Geotechnical Addendum/ 2007 Annual Report
• From: Tetra Tech
• To: DRMS
• Permit Index Doc Type: Annual Reclamation Report
• Media Type: D
• Archive: No

APPENDIX A:
North Quarry, Bench D RMR Data
Morrison Quarry
133-23514-08002
Strike and Dip Orientations:
Average Strike Average Dip Direction Strike from Strike to Dip from Dip to
Set 1 (Vertical) 230 83 NW 43 245 75 90
Set 2 (Vertical) 310 73 NE 92 320 65 90
Set 3 (Horizontal) 185 28 NW 92 210 12 50
Set 4 (Minor)
Set 5 Minor
Estimated Strength of Intact Rock Material:
Designation: Compressive Strength Range Estimated in Field
Very High (15) >250 Mpa (>36,260 psi)
High (12) 100-250 Mpa (14,500-36,260 psi)
Medium High (7) 50-100 Mpa (7,250-14,500 psi) 50 - 100 MPA
Moderate (4) 25-50 Mpa (3,625-7,250 psi)
Low (2) 5-25 Mpa (725-3,625 psi)
Ve Low 1 1-5 M a 145-725 si
Estimated Drill Core Quality (RQD)
Designation: RQD Percentage Range Estimated in Field
Excellent Quality (20) 90-100%
Good Quality (17) 75-90% 75-90%
Fair Quality (13) 50-75%
Poor Quality (8) 25-50%
Ve Poor Qualit 3 <25%
Spacing of Discontinuities

Very Wide (20) Set 1 Set 2 Set 3 Set 4 Set 5
>2m (>6.5 ft)
Wide(15) 0.6-2m(2-6.5ft)
Moderate (10) 200-600 mm (8 - 24 in)
Close (8) 60-200 mm (2.4 - 8 in) 6 - 18 in 1 - 120 in <1 in to 48 in
Ve Close 5 <60mm <2.4 in
Groundwater Conditions:
Liters per 10 m of tunnel length Or Water Pressure
Inflow (liters per 10 m) NONE NONE Notes: DRY (15)
OR Water Pressure Dry, Damp, Dripping, e