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i <br /> 24"x 24% I1-3/4'D WATERTIGHT SQUARE MANHOLE, SECURED <br /> til/TRAFFIC RATED STEEL COVER (POMECO <br /> OR EQUIVALENT)I112-WT <br /> I/4"MF'T PVC SCH 40 PLUG 2" PVC SCH 80 <br /> 2"PVC SCH 40 PLUG TRU UNION BALLVALVE <br /> :4 <br /> p: — NATIVE BACI(FILL-7z, <br /> -f­ �NATIVE SOILS-mss '°• 24' <br /> CEMENT GROUT °r 2"PVC SCH 80 <br /> 9cr ELI. <br /> SAND BED <br /> 2"PVC SCH 40 _ <br /> TEE <br /> BENlDNITE SEAL <br /> Lj <br /> Figure 4 <br /> VAPOR EXTRACTION SYSTEM -DETAIL 2 <br /> MODIFIED MONrIDRING WELLS 0,2,61 <br /> No SCALE <br /> GROUNDWATER <br /> 7-ELEVEN TECHNOLOGY,INC. <br /> STOCKTON, CALIFORNIA <br /> U71'89 <br />