All analyses to determine the strength and character of industrial wastes shall be made in accordance with the latest edition of "Standard Methods for the Examination of Water and Wastewater" prepared and published jointly by the American Public Health Association, American Water Works Association and the Water Pollution Control Federation. Strength, character and quantity of wastes shall be based on any appropriate samples taken from the flow from all plant outlets discharging into a single public sewer.
The commissioner shall require the owner, operator or tenant of such industrial plant or other establishment to provide adequate preliminary treatment or handling facilities to accomplish such a result. Before any permit for the construction of preliminary treatment or handling facilities shall be issued, plans, specifications and other pertinent data or information relating to such proposed treatment or handling facilities shall be submitted to the industry for approval of the commissioner. No permit shall be issued and no construction of such facilities shall be commenced without the prior approval of the commissioner and no substantial alteration or addition to or in the sewer or drain or in the preliminary treatment or handling facilities shall be made without the prior written approval of the commissioner.
(Prior code § 17-3.8)