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�€-os <br /> The instailation of the backwater ��alve for this building does not <br /> strictly adhere to section 710.1 UPC. However, the grade of the <br /> sewer main and the relative elevations between the lower floor of the <br /> building and the downstream Manhole make it unlikely that the side <br /> sewer will backflow due to a sewer system failure. Nevertheless, a <br /> backwater valve will be required at the outside of the building and <br /> any future damages shall be the responsibility of the contractor. <br /> � I <br /> �� D - ���-�� i � � �� <br />