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Hall-Irwin Corporation <br /> Hokestra Slurry Walls <br /> October 29, 2014 <br /> Page i of ii <br /> ' TABLE OF CONTENTS <br /> 1 PROJECT OVERVIEW....................................................................................................... 1 <br /> 2 NORTH AND SOUTH SOIL-BENTONITE SLURRY WALLS............................................. 3 <br /> ' 2.1 Working Platform Construction.................................................................................... 3 <br /> 2.2 Slurry Wall Alignment Survey ...................................................................................... 3 <br /> ' 2.3 Bentonite Slurry Mixing and Delivering....::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::. 3 <br /> 2.4 Bentonite Slurry Quality Control Results. . 3 <br /> 2.4.1 As-Mixed Slurry .................................................................................................... 3 <br /> r 2.4.2 In-Trench Slurry.................................................................................................... 3 <br /> 2.4.3 Slurry Trench Excavation...................................................................................... 4 <br /> 2.5 Soil-Bentonite Mixing and Placement.......................................................................... 4 <br /> 2.5.1 Backfill Components............................................................................................. 4 <br /> 2.5.2 Backfill Mixing and Placement Procedures ........................................................... 4 <br /> 2.5.3 Soil-Bentonite Backfill Sampling Procedure .......................................................... 5 <br /> 2.6 Deviations from the Plans and Specifications ............................................................ 5 <br /> 3 COMPACTED CLAY LINER OVERVIEW........................................................................... 7 <br /> 3.1 Slurry Wall Alignment Survey ...................................................................................... 7 <br /> ' 4 LIMITATIONS..................................................................................................................... 8 <br /> ' BRIERLEY <br /> ASSOCIATES <br /> Creating Space Underground <br />