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 6950,Section E,7+00 to 8+20 Strike and Dip Orientations: Average Strike Average Dip Direction Strike from Strike to Dip from Dip to Set 1(Primary 1) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Set 2(Primary 2) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 77 85 Set 3(Secondary 1)-------------------------------------------- 300----------------------------------------------WNW-----------290-----------310 65----------------- - - - - ------------ Set4(Secondary?)---------------------------------------------3°-----------------------------$$----------------NNE------------20------------40----------85----------90---- Set 5(Foliation) 163 30 SSE 20 320 10 40 Estimated Strength of Intact Rock Material: Designation: Compressive Strength Range Estimated in Field Very High ------------(-1-5--)---- >250 Mpa(>36_260 psi) ---------------- ------------------- ------------------------------------------------------------------------------------------------ High(12) 100-250 Mpa(14,500-36,260 psi) X -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Medium High(7) 50-100 Mpa(7,250-14,500 psi) X .edium High Moderate(4)---------------------------------25_50 Mpa(3,625_7_250 psi) -------------------------------------------------------------------------------------------- LowLow(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% X Poor Quality(8)-- ------------------------25_50 ------------------ /o-------------------------------------------X- ------------------------------------------------------------------------------------ Very Poor Quality Ti)(3 <25% Spacing of Discontinuities Set 1 Set 2 Set 3 Set 4 Set 5 VeryVery Wide(20) ------------------------------>2m(>6.5 ft) Wi--------- -------------------------------------------------------------------------------------------------------------------------------- Wide(15)-------------------------------------0.6_2 m(2-6.5 ft)--------------------------------------------------------------------------------------------------------------------- ------- - - -- - - Moderate(10)-------------------------------200-600 mm(8-24 in)----------------------------------------------------------------X-------------X----------- X ----------------- ----------------- ------------------ Close(8)--------------------------------------60_200 mm(2.4-8 in) --------------------------------------------X-------------X----------- X ---------- ------------------------------------ ------------------ Very Close(5) <60mm(<2.4 in) GEI Consultants, Inc. 17 of 122 Appendix C.2 November 2020