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STANDARD PROVISIONS AND REPORTING REQUIREMENTS 6 National Pollutant Discharge Elimination System b. Significantly changing the disposal method or location, such as changing the disposal to another drainage area or water body. c. Significantly changing the method of treatment. d. Increasing the discharge flow beyond that specified in the Order. 5. A publicly owned treatment works(POTW)whose waste flow has been increasing,or is projected to increase, shall estimate when flows will reach hydraulic and treatment capacities of its treatment and disposal facilities.The projections shall be made in January,based on the last three years' average dry weather flows,peak wet weather flows and total annual flows, as appropriate.When.any projection shows that capacity of any part of the facilities may be exceeded in four years,the Discharger shall notify the Board by 31 January.A copy of the notification shall be sent to appropriate local elected officials,local permitting agencies and the press.Within 120 days of the notification,the Discharger shall submit a technical report showing how it will prevent flow volumes from exceeding capacity or how it will increase capacity to handle the larger flows.The Board may extend the time for submitting the report. 6. A manufacturing, commercial,mining,or silvicultural discharger shall notify the Board as soon as it knows or has reason to believe: a. That any activity has occurred or will occur that would result in the discharge of any toxic pollutant that is not limited in this Order,if that discharge will exceed the highest of the following "notification levels": (1) 106 micrograms per liter(µg/1); (2) 200 µg/1 for acrolein and acrylonitrile; 500µg/1 for 2,4-dinitrophenol and 2-methyl-4,6- dinitrophenol; and 1 milligram per liter(mg/1)for antimony; (3) five times the maximum concentration value reported for that pollutant in the Report of Waste Discharge; or (4) the level established by the Board in accordance with 40 CFR 122.44(f). b. That it expects to begin to use or manufacture,as an intermediate or final product or by-product, any toxic pollutant that was not reported in the Report of Waste Discharge. 7. A POTW shall provide adequate notice to the Board of; a. any new introduction of pollutants into the POTW from an indirect discharger that would be subject to Sections 301 or 306 of the CWA if it were directly discharging those pollutants, and b. any substantial change in the volume or character of pollutants being introduced into that POTW by a source introducing pollutants into the POTW at the time of adoption of the Order, and c. any planned physical alterations or additions to the permitted facility, or changes planned in the Discharger's sludge use or disposal practice,where such alterations,additions,or changes may justify the application of permit conditions that are different from or absent in the existing permit including notification of additional disposal sites not reported during the permit application process,or not reported pursuant to an approved land application plan.