All industrial users of the sewerage system 307 and 308 of the Act. There shall be two (2) classes of industrial users: (1) Major contributing industry; and (2) minor contributing industry. They are defined as follows:
(A) A MAJOR CONTRIBUTING INDUSTRY is one that:
1. Will contribute greater than ten percent (10%) of the designated hydraulic flow of the treatment works.
2. Will contribute greater than ten percent (10%) of the designated pollutant loading of the treatment works.
3. Has in its waste a toxic pollutant in toxic amounts as defined in standards issued under Section 307(a) of the Act; or
4. Has significant impact, either singly or in combination with other contributing industries, on the sewerage system or the quality of its effluent.
(B) A MINOR CONTRIBUTING INDUSTRY shall be all industries not included in the major contributing industry classification as defined herein.
All major contributing industries' wastes shall be monitored by Elko County 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 Elko County or Industry as the characteristics of the specific industrial discharge may dictate as determined by Elko County.
All major contributing industries shall submit to the Director 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.
Each contributing industry shall report any substantial (exceeding ten percent [10%], plus or minus) change in flow or characteristic of wastewater being discharged into the sewerage system. The report shall include quantity and quality of effluent and duration and frequency of discharge.