16-B Sewer Use Ord - Laserfiche WebLink

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authorization must be submitted to the City of Paris Environmental Services Division prior to, or together with, any reports to be signed by the authorized representative. `Biochemical oxygen demand (BODs). The quantity of oxygen used in the biochemical oxidation of organic matter under the standard laboratory procedure in five (5) days at twenty (20) degrees Celsius expressed in terms of weight and concentration (milligrams per liter (mg/1)) as set forth in Standard Methods. `Boiler blowdown wastewater. Wastewater emitted from a boiler or energy-generating equipment containing chemical residues as a result of the conventional boiler water treatment programs. `Building sewer. The extension from the building drain to the public sewer. "Bypass. The intentional diversion of waste streams from any portion of a pretreatment facility. "Chemical oxygen demand (COD). The measure of the oxygen-consuming capacity of organic and inorganic matter present in the wastewater expressed in mg/1 as the amount of oxygen consumed from a chemical oxidant in a specific test, but not differentiating stable from unstable organic matter and thus not necessarily correlating with biochemical oxygen demand. "City. The City or any authorized person acting in its behalf. "Comminuted garbage. Garbage that has been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in sanitary sewers, with no particle greater than one-half inch in any dimension. "Composite sample. A series of samples mixed together so as to approximate the average strength of discharge to the sewer over a twenty-four-hour period. Sampling may be done manually or automatically, and discretely or continuously. A composite sample shall consist of a pool of at least twelve (12) sample aliquots if discrete sampling is employed. Discrete sampling may be flow proportioned by either varying the time interval between aliquots or the volume of each aliquot. Non-flow proportional composite samples may be collected when flow proportional sampling is not possible or feasible. Non-flow proportional samples shall consist of at least twelve (12) sample aliquots collected at equal intervals over a twenty-four-hour period with a minimum volume of one-hundred inilliliters (100 ml) per aliquot. The Supervisor must authorize the use of any alternative composite procedure for sampling wastestreams of intermittent or less than twenty-four-hour duration. Volatile pollutant aliquots must be combined in the laboratory immediately prior to analysis. Samples shall be iced or refrigerated during sampling and transportation to appropriate laboratory facilities. "Control authority. The City and its authorized representatives.