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• Installing a grinder pump would provide increased protection from sewer backups <br /> beyond the protection a backwater valve can provide. <br /> Additional Photos and Descriptions <br /> r <br /> w <br /> t . <br /> ••• , • ,.. /,;;,-, , . <br /> l/ ,;// / J. <br /> ' ‘-; /I // / : , '..;1, is, .1 <br /> /j <br /> ,,-,i,i, //0- 1 if 1 t ' <br /> / J <br /> 7 it <br /> tt Ilk - . <br /> This style of backwater valve has nothing to hold it in place and keep it from popping up. It is from <br /> Backwater-valves.com <br /> S:\#Common\clerical\SIDE SEWER&PLUMBING INVESTIGATION\Final Reports\Sewer L Batch\1320 Lombard final.dOCX 4/21/2011 <br />