(A) The reports required by this ordinance or 40 CFR 403.12, or both, must be based on sampling and analysis performed in the period covered by the report, and performed in accordance with the techniques described in 40 CFR Part 136 and amendments thereto. Where 40 CFR Part 136 does not contain sampling or analytical techniques for the pollutant in question, or where the Administrator determines that the Part 136 sampling and analytical techniques are inappropriate for the pollutant in question, sampling and analysis shall be performed by using validated analytical methods or any other applicable sampling and analytical procedures, including procedures suggested by the POTW or other persons, approved by the Administrator. This sampling and analysis may be performed by the POTW in lieu of the industrial user. Where the POTW itself collects all the information required for the report, the significant industrial user will not be required to submit the report.
(B) If sampling performed by an industrial user indicated a violation, the user shall notify the POTW within 24 hours of a becoming aware of the violation. The user shall also repeat the sampling and analysis and submit the results of the report analysis to the POTW within 30 days after becoming aware of the violation, except the industrial user is not required to resample if:
(1) The POTW performs sampling at the industrial user at a frequency of at least once per month; or
(2) The POTW performs sampling at the user between the time when the user performs its initial sampling and the time when the user receives the results of this sampling.
(C) The reports required in § 52.177(A) and (D) shall be based upon data, obtained, through appropriate sampling and analysis performed during the period covered by the report, which data is representative of conditions occurring during the reporting period. The POTW shall require the frequency of monitoring necessary to assess and assure compliance by Industrial Users with applicable pretreatment standards, and requirements. Grab samples must be used for pH, cyanide, total phenols, oil and grease, sulfide, and volatile organic compounds. For all other pollutants, 24-hour composite samples must be obtained, through flow-proportional composite sampling techniques, unless time-proportional composite sampling or grab sampling is authorized by the Department Head. Where time-proportional composite sampling or grab sampling is authorized by the Department Head, the samples must be representative of the Discharge and the decision to allow the alternative sampling must be documented in the industrial user file for that facility or facilities. Using protocols (including appropriate preservation) specified, in 40 CFR part 136 and appropriate EPA guidance, multiple grab samples collected during a. 24-hour period may be composited prior to the analysis as follows: for 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 EPA methodologies may be authorized by the Department Head as appropriate.
(D) For sampling required in support of baseline monitoring and 90-day compliance reports required in §§ 52.175 and 52.176, a minimum of four grab samples must be used for pH, cyanide, total phenols, oil and grease, sulfide and volatile organic compounds for facilities for which historical sampling data do not exist; for facilities for which historical sampling data are available, the POTW may authorize a lower minimum. For the reports § 52.177 require, the industrial user is required to collect the number of grab samples necessary to assess and assure compliance with applicable pretreatment standards and requirements.
(Ord. 4-1999, passed 3-8-99; Am. Ord. 13-2012, passed 8-13-12; Am. Ord. 15-2016, passed 7-11-16)