2020-11-05_REVISION - M1973021 (16)

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Morrison Quarry AM-07 Geotechnical Stability Exhibit DRMS Permit M-1973-021 Aggregate Industries WCR Inc South Quarry Morrison Quarry,Bench 6850,Section D,6+10-8+50 Strike and Dip Orientations: Average Strike Average Dip Direction Strike from Strike to Dip from Dip to Set 1(Primary 1) 291 80 WNW 280 310 75 85 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Set 2(Primary 2) 191 85 SSW 185 200 75 90 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Set 3(Secondary 1) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Set 4(Secondary 2) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Set 5(Foliation) 271 48 W 200 350 20 65 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) X ------------------------------------------------------------------------------------------------------------------- Moderate(4) 25-50 Mpa(3,625-7,250 psi) X ------------------------------------------------------------------------------------------------------------------- Low(2) 5-25 Mpa(725-3,625 psi) ------------------------------------------------------------------------------------------------------------------- Very Low(1) 1-5 Mpa(145-725 psi) Estimated Drill Core Quality(RQD) Designation: RQD Percentage Range Estimated in Field Excellent Quality(20) 90-100% ------------------------------------------------------------------------------------------------------------------- Good Quality(17) 75-90% ------------------------------------------------------------------------------------------------------------------- Fair Quality(13) 50-75% ------------------------------------------------------------------------------------------------------------------- Poor Quality(8) 25-50% X ------------------------------------------------------------------------------------------- -------------------- Very Poor Quality(3) <25% Spacing of Discontinuities Set 1 Set 2 Set 3 Set 4 Set 5 Very Wide(20) >2m(>6.5 ft) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Wide(15) 0.6-2 m(2-6.5 ft) X ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Moderate(10) 200-600 mm(8-24 in) X X X Close(8) 60-200 mm(2.4-8 in) X X ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Very Close(5) <60mm(<2.4 in) GEI Consultants, Inc. 43 of 122 Appendix C 2 November 2020