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 6900,Section B,3+50 to 6+25 Strike and Dip Orientations: Average Strike Average Dip Direction Strike from Strike to Dip from Dip to Set 1(Primary 1) 10 72 N 340 30 65 80 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 77 Set 2(Primary 2)-----------------------------------------------103 -------------------------------ESE-------------90------------ --- ---------75----------8----- Set2(Primary 2) ----------------- Set 3(Secondary 1) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Set4(Secondary 2) ------------------------------------------------------------------------------------------------------------------------- Set4(Secondary 5(Foliation) 347 22 NNW 330 10 5 35 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) X -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Medium High(7) 50-100 Mpa(7,250-14,500 psi) X -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Moderate(4)---------------------------------25.50 Mpa(3,625 7_250 psi) Low(?)---------------------------------------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/o X -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Very Poor Quality(3) <25% X 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)--------------------------------------------------------------------------------------------------------------------- ---------- - - -- - - - Moderate(10)-------------------------------200-600 mm(8-_24 in)--------------------------X-------------------X-------------------------------------------X------------------ Close(8)- - -------------------------------60_200 mm(2.4-_8 in)- ------X-------------------X------------------------------------------- X - -------------- -------------------- ------------------ V--ery Close(5) <60mm(<2.4 in) X GEI Consultants, Inc. 3 of 122 Appendix C.2 November 2020