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PIPE OR ANY OTH <br /> PENETRATION PIPE CLAMP <br /> FLOOR SLAB <br /> �30 MIL CPE BOOT <br /> D a D D <br /> CPE ADHESIVE 30 MIL CPE <br /> SEALING MEMBRANE PENETRATION <br /> CONCRETE <br /> 30 MIL CPE MEMBRANE <br /> VALVE BOX � � STRUCT . CONCRETE SLAB <br /> ASPHALT <br /> e i , ° <br /> COCK VALVE �� $ <br /> 0 0 <br /> ry O <br /> 00 <br /> PVC PIPE <br /> GRAVEL POCKET —! <br /> G.AS SAMPLING PROBES <br /> FIGURE 3 . TYPICAL SUSSLAB MEMBRANE DESIGN <br /> LFG-71 <br />