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Figure A <br /> This surface to be sloped 2"to drive level. <br /> • 3.5" minimum to allow for fill cap and tank movement S <br /> " e <br /> 11-3/4"x 1-3/4"x 3/4"wood block for <br /> final grade adjustment if necessary <br /> Cast lug <br /> �— Cast iron ring <br /> oncrete:'.+; ;? ': <br /> :.::::.:.......•..:: .:..:.. •-•••- ..•.....:.:•::.. :Drive:::::;.,.::..::•:; <br /> Add shims here for <br /> elevation <br /> 22-1/2" <br /> Gravel guard <br /> Octagonal Surface <br /> `t I Round Surface <br /> "eS:•, <br /> Riser Pipe Inside Riser Pipe Lengths' <br /> Length to be determined 12-1/4" - For conventional Top and Side seal <br /> by contractor in the field r adaptors (EBW 776 Or 778) <br /> 11-1/4" - For conventional Co-axial adaptors <br /> (EBW 306) <br /> 10-1/4" - For self-sealing co-axial poppeted ` <br /> adaptors (EBW 306 CA) ` <br /> Figure B <br /> LID <br /> DUCT TAPE <br /> CONCRETE- \ <br /> DRIVE h,. . <br /> lo <br />