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r — <br /> 21 May 1999 <br /> AGE-NC-96-0235 <br /> Page 4 of 4 <br /> will be abandoned by backfilling with portland cement from total depth to surface grade A tremmie <br /> I <br /> pipe will be used for backfilling borings exceeding 25 feet in depth or where ground water is present <br /> in the boring <br /> I <br /> i <br /> t <br /> * r , <br /> r <br /> I ' <br /> • <br /> 7 <br /> i r <br /> _ k a <br /> r s <br /> I i - <br /> I I <br /> 1 e y <br /> s t w G <br /> ] r <br /> i t t <br /> 4 I <br /> V <br /> Advanced GcoE nvi ron menial,Inc <br /> 1 - <br /> k ' <br /> t ' <br /> J r <br />