DEP sewer use regulations excerpt, Chapter 19

NYC-WTC 0001 34 CHAPTER 19—USE OF PUBLIC SEWERS §19-01 Indirect discharge. "Indirect discharge" shall mean a discharge from a private sewer to a public sewer, or other wastewater discharged so as to enter a public sewer. Industrial wastes. "Industrial wastes" shall mean any liquid, gaseous or solid substances, or a combination thereof, resulting from any process of industry, manufacturing, trade or business or from the development or recovery of any natural resources. Influent. "Influent" shall mean wastewater which flows into a pretreatment device or facility, or into a sewage treatment plant. Interceptor. "Interceptor" shall mean a sewer which receives the dry- weather flow from a number of transverse combined or sanitary sewers and conducts such sewage to a water pollution control plant. During storms it receives predetermined quantities of dry-weather flow admixed with storm- water and conducts commingled sewage to a water pollution control plant. Interceptox-collector, "Interceptor-collector" shall mean a sewer which not only intercepts existing combined sewers to convey the flow to a sewage treatment plant, but also serves as a local sanitary sewer. Laboratory determination. "Laboratory determination" shall mean the measurements, tests and analyses of the characteristics of waters and wastes in accordance with the methods contained in the latest edition at the time of any such measurements, tests and analysis, of "Standard Methods for Exami- nation of Water and Waste Water," a joint publication of the American Public Health Association, the American Waterworks Association and the Water Pollution Control Federation or in accordance with any other methods pre- scribed by the Commissioner in these rules and regulations or in any other rules and regulations. May. "May" is permissive. mg/I "mg/L" shall mean a unit of concentration expressed in milligrams per litre. Oil and grease. "Oil and grease" shall mean the measurement of freon (trichlorotrifluoroethane) extractable matter such as biodegradable animal fats and vegetable oils, and relatively non-volatile, non-biodegradable petro- leum hydrocarbons. The absolute quantity of a specific substance is not determined by this extraction procedure. Other wastes. "Other wastes" shall mean garbage (shredded or unshred- ded), refuse, decayed wood, sawdust, shavings, bark, sand, lime, cinder, ashes, and all other discarded matter not sewage or industrial waste. Person. "Person" shall mean any individual, firm, company, association, society, corporation, institution or group. Petroleum hydrocarbons. "Petroleum hydrocarbons" shall mean that por- tion of the total oil and grease which is not eliminated from a freon (trichlo- §19-01 TITLE 15—DEPT. OF ENVIRONMENTAL PROTECTION Contributory area. "Contributory area" shall mean the area from which the intercepted sewage flow is controlled by a regulator chamber. Cooling water. "Cooling water" shall mean the water discharged from any system of condensation, air conditioning, cooling, refrigeration, or other sources. It shall contain no polluting substances which would produce BOD or SS in excess of 10 mg/L or toxic substances in concentrations or amounts greater than those specified herein. Cost per pound of removing pollutants. "Cost per pound of removing pol- lutants" shall mean the cost per pound (in dollars) of removing from sewage the BOD and SS contained in wastewater discharged into the sewerage system expressed to the nearest tenth of a cent as certified by the Commis- sioner pursuant to paragraph 14 of subdivision a of §24-523 of the Adminis- trative Code. Department. "Department" shall mean the Department of Environmental Protection of the City of New York. Direct discharge. "Direct discharge" shall mean a discharge to a public sewer from a house sewer. Diversion chamber. "Diversion chamber" shall mean a structure which diverts sanitary sewage into a regulator chamber under dry-weather condi- tions. During wet-weather it directs combined sewage, in excess of treatment plant capacity, to overflow into a tide gate chamber. Drainage area. "Drainage area" shall mean the geographical area which contributes flow to a particular location in the sewerage system. Loscharge d direliy or halrecdan to a pevac setreated or untreatod, which is Flammable. "Flammable" shall mean any liquid or mixture, substance, or compound that emits flammable vapors at a temperature below 100°F, when tested in a Tagliabue closed cup tester. Groundwater. "Groundwater" shall mean any water removed from the ground, including water from springs, and natural underground streams but excluding water from wells used for the delivery of potable or process water. House drain (building drain). "House drain" shall mean that part of the lowest horizontal piping of a house drainage system which receives the discharge from soil, waste and other drainage pipes of the building and conveys such drainage to the house sewer. House drainage system. "House drainage system" shall mean that part of the plumbing system which receives, conveys and removes liquid and water- borne wastes to a public or private sewer. House sewer. "House sewer" shall mean that part of a house drainage system which extends from a house drain to a connection with a public or NYC 9/11 Public Portal Document