404 14TH ST BASE FILE 2024-12-09

having overall responsibility for environmental matters for the company, and the written authorization is submitted to the City. G. Average Dail.. F� Average Daily Flow shall be defined as the arithmetical mean of the total Process Wastewater flow over a one (1) year period. This mean shall be calculated based on days when a discharge occurs. H. Best Management Practices (BMPs) The term Best Management Practices or BMPs means schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to implement the prohibitions listed in § 403.5(a)(1) and (b). BMPs also include treatment requirements, operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw materials storage. I. Biochemical Oxygen Demand (BOD). The quantity of oxygen utilized in the biochemical oxidation of organic matter amenable to measurement by the methods described in Standard Methods for the examination of Water and Wastewater, current approved edition; under standard laboratory procedures for five (5) days at 20' centigrade, usually expressed as a concentration [milligrams per liter(mg/L)]. I Categorical Pretreatment Standard or Categorical Standard. Any regulation containing pollutant discharge limits promulgated by the US EPA in accordance with Sections 307(b) and (c) of the Act (33 USC 1317) which apply to a specific category of users and which appear in 40 CFR Chapter I, Subchapter N, Parts 405-471. K. Categorical User. A user covered by one of EPA's Categorical Pretreatment Standards. L. Chemical Oxygen Demand (COD). A measure of the oxygen consuming capacity of inorganic and organic matter present in wastewater amenable to measurement by the methods described in Standard Methods for the examination of Water and Wastewater, current approved edition. COD is expressed as the amount of oxygen consumed from a chemical oxidant in mg/L during a specific test. M. City. The City of Everett, Washington. N. Cooling Water/Non-Contact Cooling Water. Water used for cooling which does not come into direct contact with any raw material, intermediate product, waste product, or finished product. Cooling water may be generated from any use, such as air conditioning, heat exchangers, cooling or refrigeration to which the only pollutant added is heat. O. Color. The optical density at the visual wave length of maximum absorption, relative to distilled water. One hundred percent (100%) transmittance is equivalent to zero (0.0) optical density. 4