O-1972-912 - Laserfiche WebLink

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. .- .- . . . Ordinance No. 912 , P~ge 3 (m) . '-'Sewage Treatment Plant" shall mean any City owned facility, devices, and structures used for receiving and treati~g sew~ge from the City sanitary sewer system. (n). "pH" shall mean the l~gari thm (base 10) of the reciprocal of the hydr~gen ion concentration expressed in mols per liter. It shall be determined by one of the procedures outlined in "Standard Methods". (0). "B.O.D. " shall me:an the quantity of oxygen expressed in parts per million by we~ght, utilized in the bio- chemical oxidation of o!ganic matter under standard laboratory conditions for five days at a temperature of 20 d~grees Centi- grade. The laboratory determinations shall be made in accor- dance witl1 procedures set forth in "Standard Methods". (p) . "Suspended Solids" shall mean solids that either float on the surface of, or are in suspension in water, sew~ge, or other liquids, and which are removable by a labora- tory filtration device. Quantitative determination of suspended solids shall be made in accordance with procedures set forth in "Standard Methods." (q) . "Unpolluted Water or Waste" shall mean water or waste containi~g none of the followi~g: free of emulsified grease or oil; acids or alkalis, phenols, or other substances imparti~g taste and odor in receivi~g water, toxic or poisonous substances in suspension; colliodal state or solution and noxious or otherwise obnoxious odorous, gases. It shall contain not more than ten parts per million each of suspended solids and B.O.D. The color shall not exceed fifty parts per million. (r). "S"t'a'nda'r"d' Methods" shall mean the examination and analytical procedures set forth in the latest Edition at the time of analysis of "Standard Methods for the Examination of Water and Sew~ge" as prepared, app'roved and published jointly by the American Public Health Association, the American Water Works Association and the Federation of Sew~ge and Industrial Wastes Associations. (5). "Building Drain" shall mean that part of the lowest horizontal pipi~g of a drain~ge system which receives the discha!ge