A. All domestic or sanitary wastewaters from restrooms, showers, drinking fountains, etc., shall be kept separate from all industrial wastewaters until the industrial wastewaters have passed through any required pretreatment system or device.

B. A control manhole of a design approved by the superintendent shall be furnished and installed by certain designated industrial wastewater dischargers to facilitate inspection, sampling and flow measurements by personnel of the city. This control manhole shall be located off the industrial premises of the discharger or, within the plant fence, a special locked gate adjacent to the manhole shall be available to authorized personnel of the city at all times. The control manhole may be used as a junction manhole for domestic sewage and industrial wastes provided the junction occurs downstream of the sampling or flow measuring point. (Ord. 142 § 409, 1976)