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NEENAH R-3246 CASTING <br />MINIMUM OF 2 AND <br />MAXIMUM OF 6 <br />REINFORCED CONCRETE <br />ADJUSTING RINGS <br />8' <br />NEENAH <br />R-1981 -J <br />MANHOLE STEPS <br />OR APPROVED <br />EQUAL <br />AS REQUIRED <br />INLETS AS <br />REQUIRED <br />REMOVABLE <br />MAINTENANCE CAP <br />PLACE FULL MORTAR BED <br />BETWEEN RINGS, AND <br />INSTALL WATER TIGHT WRAP <br />AROUND CASTING AND RINGS <br />REINFORCED CONCRETE <br />COVER CONFORMING TO <br />ASTM C478 <br />A <br />L 24" <br />16" 0.C. <br />MIN <br />} <br />w <br />n_ <br />n <br />T <br />03 <br />6.75" <br />18" HDPE OUTLET <br />36" <br />4' <br />8" <br />64" <br />BOTTOM OF PIPE <br />INVERT <br />REINFORCED CONCRETE BASE SLAB CONFORMING <br />TO ASTIM C478 AND MNDOT STD. PLATE 4011 <br />APPROVED <br />DATE <br />01/15 <br />STA\ DAA 9 > ETAI LS <br />OIL SKIMMER CATCH <br />BASIN <br />CITY PLATE No. <br />STO-23 <br />