All industrial users of the sewerage system shall comply with any applicable requirements of sections 204(b), 307 and 308 of the federal water pollution control act and 40 CFR 403. There shall be two (2) classes of industrial users: a) major contributing industry, and b) minor contributing industry.
A. Contributing Industries Defined: The contributing industries are defined as follows:
1. Major Contributing Industry: A major contributing industry is one that:
a. Will contribute greater than ten percent (10%) of the design hydraulic flow of the treatment works.
b. Will contribute greater than ten percent (10%) of the design pollutant loading of the treatment works.
c. Has in its waste a toxic pollutant in toxic amounts as defined in standards issued under section 307(a) of the act.
d. Has significant impact, either singly or in combination with other contributing industries, on the sewerage system or the quality of its effluent.
e. Is classified as a categorical industry or significant industry.
2. Minor Contributing Industry: A minor contributing industry shall be all industries not included in the major contributing industry classification as defined in subsection A1 of this section.
B. Requirements:
1. Monitoring Wastes: All major contributing industries' wastes shall be monitored by the city or industry on a regular basis at intervals not less than monthly, and more frequently as the characteristics of the specific industrial discharge may dictate. Minor contributing industries shall be monitored by the city or industry as the characteristics of the specific industrial discharge may dictate as determined by the city.
2. Reports To City: All major contributing industries shall submit to the city on the first day of the months of June and December, a statement in writing regarding specific actions taken to achieve full compliance with the requirements of section 307 of the act.
3. Report Changes In Flow Or Characteristics: Each contributing industry shall report any substantial (exceeding 10 percent plus or minus) change in flow or characteristics of wastewater being discharged into the sewerage system. The report shall include quantity and quality of effluent and duration and frequency of discharge. (Ord. 2122, 5-6-2014)