North Carolina Administrative Code
Title 15A - Environmental Quality
Chapter 02 - ENVIRONMENTAL MANAGEMENT
Subchapter B - SURFACE WATER AND WETLAND STANDARDS
Section .0500 - SURFACE WATER MONITORING: REPORTING
Section 02B .0504 - CLASSIFICATION OF WASTE SOURCES

(a) All persons subject to the requirements of these Rules shall determine the standard industrial classification (SIC) number or North American Industry Classification System number or both, as specified on its permit application forms at time of application or upon the request of the Director, for each type of manufacturing, service, or activity in which they are engaged, by reference to the applicable classification manuals.

(b) SIC number 4952 and NAICS number 221320 apply to every industrial establishment or unit of government that collects or discharges domestic wastewater, whether from on-premises bathrooms, restrooms, kitchens, dining rooms, water pollution control facilities, or from any other source.

(c) The owner or operator of every water pollution control facility that receives a wastewater influent from more than one source shall determine and report on its NPDES permit application, required per 15A NCAC 02B .0105, the name and industrial classification number(s) for each applicable activity(ies) of every industrial establishment contributing wastes containing toxic substances, in toxic quantities, and also every industrial establishment contributing an average daily wastewater influent of one percent or more of the design flow of the facility or in excess of 100,000 gallons per day, whichever is less, and shall report such other information as is required by Rule .0505 of this Section; provided; however, that it is not required that the name and SIC or NAICS number of any source contributing domestic sewage influent only be reported hereunder.

(d) The average daily influent volume contributed by any one source may be computed by dividing the total volume of wastewater discharged by the source during the reporting year by the total number of days that the source operated during the reporting year.