The director may classify certain commercial and industrial establishments which routinely discharge BOD and suspended solids concentrations exceeding those established for "Normal Strength Wastewater," into the following classes:
A. Eating Places. Includes restaurants, bars, lounges, and other establishments which engage in the preparation of food or beverage which is served directly to the consumer.
B. Food and Kindred Products Processing. Includes commercial establishments which engage in the preparation, packaging, processing, or distribution of food, food products, grains, or produce, and which discharge less than 200,000 gallons of wastes per month.
C. Equipment Service Facilities. Includes establishments which perform washing, cleaning, or servicing of automobiles, trucks, buses, machinery, or equipment; this class to include public facilities, facilities limited to specific companies, and attended or coin-operated establishments.
The director shall assess an industrial waste surcharge for each class based on waste strength determinations established by averaging grab or composite samples or both, taken from a representative number of establishments in each class and shall apply this surcharge to the water consumption or metered wastewater of the establishment. If the establishment is within a larger facility for which water usage is determined from a master meter, the director shall determine an estimated volume for the establishment on which the surcharge is applied. The director shall then add the appropriate industrial surcharge to billings for regular water and sanitary sewer service for each establishment included in one of the classes.
If an establishment contains operations from more than one of the classes, and the director determines that the surcharge for a particular class would not adequately compensate the City for its cost of treatment, the director may assess a surcharge based on a proportional average of the class surcharges involved, or may require the establishment to be billed under the requirements of §30-70.
The owner of an establishment classified into one of the classes may elect to have the industrial surcharge billed under §30-70 rather than this section, by making application to the director and paying the required sampling costs.
The director may revise the class surcharges in the future to reflect a change in the average strength of the wastes discharged or to reflect a change in the costs to treat these wastes.