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• <br /> E. Approval Authority. The state of Washington Department of Ecology. <br /> F. Average Daily Flow. Average Daily Flow shall be defined as the arithmetical mean of the <br /> total Process Wastewater flow over a one (1) year period. This mean shall be calculated <br /> based on days when a discharge occurs. <br /> G. Authorized Representative of the User. <br /> (1) If the user is a corporation: <br /> (a) The president, secretary, treasurer, or a vice-president of the <br /> corporation in charge of a principal business function, or any other <br /> person who performs similar policy or decision-making functions <br /> for the corporation; or <br /> (b) The manager of one or more manufacturing, production, or <br /> operation facilities employing more than 250 persons or having <br /> gross annual sales or expenditures exceeding $25 million (in <br /> second-quarter 1980 dollars), if authority to sign documents has <br /> been assigned or delegated to the manager in accordance with <br /> corporate procedures; <br /> (2) If the user is a partnership or sole proprietorship: a general partner or <br /> proprietor, respectively; <br /> (3) If the user is a Federal, State, or local governmental facility: a director or <br /> highest official appointed or designated to oversee the operation and <br /> performance of the activities of the government facility, or his/her <br /> authorized designee. <br /> (4) The individuals described in paragraphs 1 through 3 above may designate <br /> another authorized representative if the authorization is in writing, the <br /> authorization specifies the individual or position responsible for the overall <br /> operation of the facility from which the discharge originates or having <br /> overall responsibility for environmental matters for the company, and the <br /> written authorization is submitted to the City. <br /> H. Best Management Practices (BMPs) means schedules of activities, prohibitions of <br /> practices, maintenance procedures, and other management practices to prevent or reduce <br /> the pollution of"waters of the United States." BMPs also include treatment requirements, <br /> operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or <br /> waste disposal, or drainage from raw material storage. <br /> Biochemical Oxygen Demand (BOD). The quantity of oxygen utilized in the biochemical <br /> oxidation of organic matter amenable to measurement by the methods described in <br /> Standard Methods for the examination of Water and Wastewater, 18th edition, 1992; <br /> under standard laboratory procedures for five(5) days at 20° centigrade,usually expressed <br /> as a concentration [milligrams per liter(mg/L)]. <br /> J. Categorical Pretreatment Standard or Categorical Standard. Any regulation containing <br /> pollutant discharge limits promulgated by the US EPA in accordance with Sections 307(b) <br /> 9 <br />