A. New buildings. All new building sewer laterals, including sewer lateral replacements, shall be equipped with a clean-out riser and be fitted with a backflow prevention device of type and materials as approved by the city.
B. Existing buildings. All existing buildings shall be equipped with a clean-out riser. Any existing building in which the elevation of the lowest floor is less than twelve (12) inches above the rim elevation of the nearest upstream manhole or junction structure in the reach of a city main sewer into which a building sewer lateral connects, shall also be protected from backflow of sewage by installing a backflow prevention device of a type and in the manner prescribed by the city.
C. All buildings. Any such backflow prevention device shall be installed by the property owner of the property on which the building is constructed, and shall be located on the lateral between the building and the property line, preferably at the location of the clean-out. The backflow prevention device, if below grade, shall be enclosed in a suitable concrete utility box with removable cover and shall be readily accessible for Inspection and maintenance. The installation of any such backflow prevention device shall be at the sole cost and expense of the property owner. The maintenance of the backflow prevention device shall be the sole obligation of the property owner or the property owner's successor in interest. The city shall be under no obligation to ascertain that the backflow prevention device continues in operating condition. (Ord. 2012-02 § 1 (part), 2012)