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<br />TABLE OF CONTENTS <br />~~ <br />1. INTRODUCTION .............................................................................................................1 <br />2. BACKGROUND AND EXISTING CONDI'I'IONS .........................................................1 <br />4. PLUG CONSTRUCTION .................................................................................................3 <br />5. PLUG CONCRETE REQUIItEMENTS ..........................................................................5 <br />6. PLUG GROUTING ...........................................................................................................8 <br />SUMMARY .....................................................................................................................10 <br />FIGURE 1; TYPICAL ADI'I' SECTIONS ............................................................................11 <br />FIGURE 2; TYPICAL GROUT HOLE LAYOUT IN EACH PLUG SECTION ...............12 <br />