(a) Each residential, commercial or industrial unit shall be serviced by an adequate sanitary sewage collection and disposal system. Only under circumstances of extreme hardship shall individual sewage disposal systems be allowed.
(b) In general, all sanitary sewage collection and disposal systems shall be constructed in accordance with the rules, regulations and specifications of the County Sanitary Engineer.
(c) Individual sewage disposal systems shall be permitted and constructed by and in accordance with the rules, regulations and specifications of the County Sanitary Engineer and the County Board of Health, except that the City reserves the right to review and approve or disallow the installation of any such individual system.
(d) All public sanitary sewers shall be eight inches in diameter or larger, constructed at such a gradient as to maintain a minimum velocity of flow of two feet per second or greater when flowing at fifty percent capacity. All sewers shall be designed such that at maximum rate of flow the flow shall not exceed seventy percent of absolute theoretical capacity.
(e) All service connections to public sanitary sewers shall be six inches in diameter or larger, and shall extend from the main sewer to the limits of the dedicated right of way. The last two bell ends and the stopper for each connection shall be painted yellow for purposes of identification.
(f) All public sewers, including service connections thereto, constructed within the limits of the dedicated right of way shall be constructed of vitrified clay pipe meeting the Tentative Specifications for Extra Strength Clay Pipe, American Society for Testing Materials Designation C-200-57T.
(g) Unless otherwise specifically authorized, the minimum depth of the invert of the sanitary sewer connection at the right-of-way line shall be six feet below the established centerline grade of the pavement.
(h) All pipe joint closures for public sanitary sewers and connections thereto within the limits of the dedicated right of way shall be of a factory-fabricated resilient rubber or nonbituminous plastic material, meeting all the other requirements of Tentative Specifications for Vitrified Clay Pipe Joints, American Society for Testing Materials Designation C-425-60T.
(i) In general, sanitary manholes shall be constructed at all changes in alignment and grade of the sewer, and at intervals of 300 feet or less, with an absolute maximum interval of 375 feet in a single isolated instance.
(J) The design and construction of all sanitary sewers shall be correlated with contiguous improvements or future development and any proposed central collection and treatment system.
(k) Plans for the, construction of sewage collection and disposal systems shall be submitted to and approved by the County Sanitary Engineer prior to being submitted to the City.
(Ord.1418. Passed 5-23-61.)