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Two Rivers Gravel Pit Mine <br /> Riverside Berm Failure Analysis <br /> and Flood Control Mitigation Plan <br /> 7ech"olooicess January 22,2020 <br /> CENTRAL PIT <br /> BREACH PROGRESSION <br /> BEST SOIL PARAMETER CAS <br /> 150 FT BERM <br /> B-h Pxagxe»ioa Table <br /> Hater Surf_ Head Cut Head Cut Head Cut Tailrat- <br /> Tir EL-ati- 9t atiaa Ease El- 9tahilitq Eleaatiaa <br /> 0-I (fast} (fast) {£eat) {code) (feet) <br /> 0.50 96BB_1a 102.00 4fi B7.11 0 465fi_00 <br /> 0.75 96BB_1B 102.00 4fi B4_07 0 465600 <br /> 1.00 9fi00.22 102.00 46 Bl.BB 0 4fi56.00 <br /> 1.25 96BB_2B 176_15 467B_21 1 4656 00 <br /> 1.50 9aee_as 16B_75 4672_54 1 4656_00 <br /> 1.75 461313_91 159_67 4667_BO 1 465600 <br /> 2.00 9fi00.9fi 199.26 4661.20 1 4fi56.00 <br /> 2.25 9fi 00.52 12 <br /> 7.53 4fi5fi.00 1 4fi56.00 <br /> 2.50 96BB_5B 124.44 46515_00 1 4656 00 <br /> 2.75 9fi00.fi9 109.99 4656.00 1 4fi56.00 <br /> 2.00 9fi BB.fi9 94.80 4fi5fi.00 1 4fi56.00 <br /> a_25 96BB_B1 77.41 4656 00 1 4656 00 <br /> 3_50 4600.95 57_Ell 465fi_-DO 1 4656_00 <br /> a_75 .16139.06 as_23 4656 00 1 4656 00 <br /> 2.01 461313.25 2E1.9B 4fi56.00 1 4656.00 <br /> a_as 4670_132 11.70 4656 00 1 4656 00 <br /> 2.99 9fi 5B.91 0.00 4fi56.00 1 4656.00 <br /> 9.00 4650.47 0.00 4656.00 0 4fi56.00 <br /> 9.25 9fi 5B_ 6 0.00 4656 00 0 4656 00 <br /> 1.50 46513.56 0.00 4fi56.00 0 4656.00 <br /> 9.75 4658_B2 0.00 4656.00 0 465fi_00 <br /> 5.00 .1 91 0.00 4fi56.00 0 4fi5fi.00 <br /> 5.25 96'59.17 0.00 4656 00 04656 00 <br /> 5.50 4659.29 0.00 4656 00 0 4656 00 <br /> 5.75 943 <br /> 59.52 0.00 4fi5fi.00 0 4fi5fi.00 <br /> 6.00 4659.62 0.00 4656 00 0 4656 00 <br /> 6.25 9659.7a 0.00 4656 00 0 4656 00 <br /> 6.50 4fi 59.72 0.00 4fi5fi.00 0 4fi5fi.00 <br /> 6.75 4659.81 0.00 4fi5fi.00 0 4fi5fi.00 <br /> 7.00 4659.130 0.00 4fi56.00 0 4fi5fi.00 <br /> 7.25 4659_135 0.00 4656 00 0 4656 00 <br /> 7.50 4659.130 0.00 4fi56.00 0 4fi5fi.00 <br /> 7.75 4659.89 0.00 4fi56.00 0 4656.00 <br /> B_00 4659_130 0.00 4656 00 0 4656 00 <br /> 0.25 4659.137 0.00 46.96 00 0 4656.00 <br /> B_50 4659.07 0.00 4656 -DO 0 4656_00 <br /> 0.75 4fi 59.95 0.00 4fi56 00 0 4656.00 <br /> 9.00 9659.93 0.00 4656 00 0 4656 00 <br /> 9.25 4639.99 0.00 4656 00 0 4656 00 <br /> 9.50 4659.913 0.00 4fi56 00 0 4fi5fi.00 <br /> 9.75 4660.02 0.00 4656 00 0 4656 00 <br /> 10.00 4660.01 0.00 4fi56.00 0 4fi56.00 <br /> 10.25 4660.05 0.00 4fi5fi.00 0 4fi5fi.00 <br /> l 0.50 4660.0a 0.00 4656 00 04656 00 <br /> 10.75 4660.06 0.00 46.96 00 0 4fi5fi.00 <br /> 11.00 4660.05 0.00 4fi5fi.00 0 4fi5fi.00 <br /> 11.25 4660.00 0.00 4656 00 0 4656 00 <br /> 11.50 4659.92 0.00 4fi5fi.00 0 4fi5fi.00 <br /> 11.75 4fi 59.135 0.00 4fi56.00 0 4fi5fi.00 <br /> 12.00 9659.78 0.00 4656 00 0 4656 00 <br /> 12.25 9659.70 8.80 4656 00 0 4656 00 <br /> 12.50 4659.60 0.00 4656 00 0 4656 00 <br /> 12.75 4fi 59.56 0.00 4(3 00 0 4fi56 <br /> 3L <br /> 3 <br /> _00 9659.49 0.00 4656 00 0 4656 00 <br /> 3L <br /> 3 <br /> _25 4659.90 0.00 4656 00 0 4656 00 <br /> Pagc 1 <br /> pg. 35 <br />