(a) Approved Methods. Testing of wastewater should be done in accordance to the methods prescribed in 40 C.F.R. Part 136 and amendments thereto. Where 40 C.F.R. Part 136 does not contain sampling or analytical techniques for the pollutant in question, or where the Utilities Director determines that the Part 136 sampling and analytical techniques are inappropriate for the pollutant in question, sampling and analysis shall be performed by using analytical methods or other applicable sampling analytical procedures approved by the Director. Tests shall be determined at the control manhole provided, or upon suitable samples taken at the control manhole. In the event that no special manhole has been required, the control manhole shall be considered to the nearest downstream manhole in the public sewer to the point at which the building sewer is connected. Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards to life, limb and property.
(1) Grab samples shall be used for pH, hexavalent chromium, cyanide, total phenols, oil and grease, sulfide, and volatile organic compounds. For all other pollutants, 24-hour composite samples shall be obtained through flow-proportional composite sampling techniques, unless time-proportional composite sampling or grab sampling is authorized by the City.
(2) Using protocols (including appropriate preservation) specified in 40 C.F.R. 136 and appropriate USEPA guidance, multiple grab samples collected during a 24-hour period may be composited prior to the analysis as follows: for hexavalent chromium, cyanide, total phenols, and sulfides the samples may be composited in the laboratory or in the field; for volatile organics and oil and grease the samples may be composited in the laboratory. Composite samples for other parameters unaffected by the compositing procedures as documented in approved USEPA methodologies may be authorized by the control authority, as appropriate.
(b) Waste Sampling. 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. 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. Installation, operation and maintenance of the sampling facilities shall be the responsibility of the industrial user discharging the waste and shall be subject to the approval of the Director or his or her duly authorized representative at all times. Samples shall be collected and preserved in accordance with 40 C.F.R. Part 136.
(c) Measurement of Flow.
(1) When required by the Director a parcel of land, building or premises discharging wastewater either directly or indirectly shall install a suitable sewer meter in order to determine the sewer service charge or rental provided herein at the expense of the industrial user.
(2) The type of sewer metering device shall be approved by the Director. Following approval and installation, such meters may not be removed without the consent of the Director.
(3) The user shall be required to calibrate the meter according to the manufacturer’s recommendation. The industrial user shall maintain records of the calibration results and shall provide such documentation to the City as requested.
(4) In the event of a meter failure or inaccuracy, the user shall be required to report the problem to the Industrial Pretreatment Coordinator within 24 hours.
A. The sewer meter reading will be used as the basis for sewer volume and surcharge billings.
B. In the event of a meter failure, if the sewer meter is repaired and fully operational within 30 days of the initial notification, the flows for the quarter in which the meter failed shall be determined by using the average difference between the water and sewer meter reading for the previous 12 months.
C. If the sewer meter is not repaired and fully operational within 30 days of the initial notification, the flows for the quarter in which the meter failed shall be determined using the water meter readings for said quarter per Section 915.05.
(5) The Utilities Director shall have the authority allow users not otherwise required, to install sewer flow meters at their request.
(6) In the event that the sewer meter shall fail and the user is not a City water user and the usage cannot be measured by a City water meter, then, in each such case the amount of water so used shall be otherwise estimated or determined by the Director by other means, in order to determine the sewer service charge or rental provided herein.
(d) Analysis. Laboratory procedures used for the analysis of industrial wastes shall be those set forth in 40 C.F.R. Part 136. However, alternative methods for certain analysis of wastes may be used, subject to mutual agreement between the Director and the user. Analysis of the wastes shall be made by the user discharging them, or his or her agent, as designated and required by the Director. The City may also make its own analysis of wastes, and these determinations shall be binding as a basis for charges.
(e) Limitations on Radioactive Wastes. No user shall discharge, or cause to be discharge, any radioactive waste into a public sewer, except when the industrial user is authorized to use radioactive materials by the Ohio Department of Health or other governmental agency empowered to regulate the use of radioactive material, and when the industrial user is in compliance with all rules and regulations of all other applicable regulatory agencies.
(Ord. A-2051. Passed 8-26-96; Ord. A-2211. Passed 5-8-00; Ord. A-2405. Passed 11-8-04; Ord. A-2549. Passed 1-28-08; Ord. A-2698. Passed 10-24-11; Ord. A-2743. Passed 12-10-12; Ord. A-2773. Passed 11-11-13; Ord. A-2788. Passed 6-23-14.)