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. '. <br /> . EXHIBIT A � <br /> existing sewer meets all current standards. All costs for said work shall be at the � <br /> expense of the owner of the sewer. <br /> The connection of the building sewer into the public sewer shall be made ' <br /> at the "Y" or"T" branch, if such branch is available at a suitable location. If the <br /> public sewer is twelve inches in diameter or less, and no properly located "Y" or ' <br /> "T" branch is available a "Y" branch shall be installed at the location specified by <br /> the Director of Engineering and Infrastructure. Where the public sewer is greater <br /> than finrelve inches in diameter, and no properly located "Y" or"T" branch is ' <br /> available, a neat hole may be cut into the public sewer and a saddle type "Y" ', <br /> connection or an "Insert-a-tee"type fitting installed. Other special fittings may be , <br /> used for the connection only when approved by the Director of Engineering and <br /> Infrastructure. II!, <br /> The invert of the building sewer at the point of connection to the public <br /> sewer shall be at a higher elevation than the invert of the public sewer at the <br /> point of connection. The building sewer connection to the public sewer shall be <br /> watertight. � <br /> All costs for connecting to the public sewer shall be at the expense of the <br /> owner of the connection. <br /> 12. BUILDING SEWER. The size and slope of the building sewer shall <br /> be subject to the approval of the Director of Engineering and Infrastructure, but in <br /> no event shall the diameter be less than 4 inches and installed at a slope to <br /> insure adequate velocity to be self cleaning. The building sewer shall be laid at <br /> uniform grade and in straight alignment insofar as possible. Changes in direction <br />