All measurements, tests and analyses of the characteristics of waters and wastes to which reference is made in Section 923.12 shall be determined in accordance with most recent version of "Standard Methods for the Examination of Water and Wastewater" and shall be determined at the control manhole provided for in Section 923.17 or upon suitable samples taken at such control manhole. In the event that no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the building sewer is connected. (Ord. 3261. Passed 12-17-13.)