2017-083 Ordinance - Laserfiche WebLink

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(14) "Chemical oxygen demand" (COD) means the quantity of oxygen util measure of the oxygen -consuming capacity of inorganic and organic matter present in wastewater. COD is expressed as the amount of oxygen consumed in mg/t. Results do not necessarily correlate to the biochemical oxygen demand (BOD) because the chemical oxidant may react with substances that bacteria do not stabilize. (15) "Chlorine requirement" means the amount of chlorine, in parts per million by weight, which must be added to sewage to produce a specified residual chlorine content, or to meet the requirements of some other objectives, in accordance with procedures set forth in Standard Methods as defined in subsection (83) hereof. (16) "City" means the City of North Olmsted, Ohio. (17) "City Engineer" means the City Engineer of the City, or his duly authorized agent or representative. (18) "Commercial user" for purposes of system charges, means any aggregation of space, office, laundry, restaurant, stores, shops, apartments and other like units, which is equipped with one or more water fixtures draining into the wastewater disposal system, separate and distinct from other users of service. In office buildings or other premises containing more than one tenant, only those tenants shall be classified as users of service who occupy space equipped with a distinct opening or fixture or set of fixtures for the use of water separately from other tenants and with waste draining into the water disposal system. (19) "Compatible pollutant" means the BOD, TSS, pH and fecal coliform bacteria, plus additional pollutants identified in the City's NPDES permit if the treatment works was designed to treat such pollutants, and in fact does remove such pollutants to a substantial degree. (20) "Composite sample" should contain a minimum of eight discrete samples taken at equal time intervals over the compositing period or proportional to the flow rate over the compositing period. More than the minimum number of discrete samples will be required where the wastewater loading is highly variable.