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' <br /> 12/07/02 Page 3 <br /> , <br /> TRENCH ELEVATIONS <br /> ' TRENCH FINISHED TOP OF DEPTH OF <br /> NUMBER GRADE CHAMBER TRENCH <br /> ' 1 112.50 ' 111.50 1 <br /> 10.17 <br /> ' 2 112.20 111.20 109.87 <br /> 3 111.90 110.90 109.57 <br /> 4 111.50 110.50 109.17 <br /> 5 111.40 � 110.40 109.07 <br /> ' 6 111.10 i 110.10 108.77 <br /> ' <br /> ' <br /> , <br /> ' <br /> ' <br /> ' <br /> ' <br /> ' <br /> , <br /> ' <br /> � <br /> ' <br /> ' <br />