(a) Industrial wastes discharged into the public sewers shall be subject to periodic inspection and a determination of character and concentration of such wastes. The determinations shall be made as often as may be deemed necessary by the Director.
(b) Samples shall be collected in such a manner as to be representative of the composition of the wastes. The sampling may be accomplished either manually or by the use of mechanical equipment acceptable to the Director. Grab samples shall be collected for pH, hexavalent chromium, cyanide, total phenols, sulfide, oil and grease, Total Petroleum Hydrocarbons (TPH) and volatile organic compounds including benzene, toluene, ethylbenzene, and xylene. The remaining pollutants shall be collected over any continuous twenty-four (24) hour period by flow-proportioned means unless justification for an alternate sampling type representative of the discharge is documented in the Industrial User's file. Not To Exceed concentrations shall be determined by obtaining a composite sample of the wastewater collected only during appropriate production periods. Multiple grab samples collected during a twenty-four (24) hour period may be composited prior to the analysis as follows: For hexavalent chromium, cyanide, total phenols, and sulfides, the samples may now be composited in the laboratory or in the field. For volatile organics, oil and grease and TPH, the samples may be composited in the laboratory. Protocols specified in 40 C.F.R. 136 and appropriate U.S. EPA guidance, including appropriate preservation, must be followed. Every care shall be exercised in the collection of samples to insure their preservation in a state comparable to that at the time the sample was taken.
(c) Installation, operation and maintenance of the sampling facilities shall be the responsibility of the person discharging the waste and shall be subject to the approval of the Director at all times.
(d) All analysis required under this chapter shall be performed in accordance with 40 CFR 136, as may be amended and as set forth in Standard Methods, except that where 40 CFR 136, does not include a sampling or analytical technique for the pollutant in question, sampling and analysis shall be performed in accordance with the procedures set forth in the USEPA publication, Sampling and Analysis Procedures for Screening of Industrial Effluents for Priority Pollutants, April, 1977, as may be amended, or in accordance with any other sampling or analytical procedures approved by the Administrator of the USEPA. However, alternate methods for certain analysis of industrial wastes may be used subject to mutual agreement between the Director and the person.
(e) Determination of the character and concentration of the industrial wastes shall be made by the person discharging them, or the person's agent, as designated and required by the Director. When it is deemed necessary by the Director or when the subject of mutual agreement between the Director and the person, the Control Authority may perform sampling operations and analysis of industrial waste, which are the responsibility of the person discharging the waste. Fees for such sampling and analysis services shall be determined and established by the Director. The Control Authority may also make its own analysis on wastes, and these determinations shall be binding as a basis for charges.
(f) If the Control Authority performs sampling and analysis resulting in a violation, the Control Authority shall perform the repeat sampling and analysis within thirty (30) days of the violation unless notifying and requiring the Industrial User to perform the repeat sampling and analysis.
(Ord. 210-12. Passed 5-8-12.)