16.09.120   Discharger self-monitoring.
   (a)   The superintendent may require the discharger to conduct a wastewater sampling and analysis program of a frequency and type sufficient to demonstrate compliance with the requirements of this chapter. The discharge permit shall specify the minimum frequency and type of samples, flow monitoring, measuring, and analyses to be conducted by the discharger. Additional monitoring may be required by the superintendent for violation follow-up or as part of a notice of noncompliance or other enforcement response. If a discharger subject to reporting requirements monitors any regulated pollutant at a designated sampling location more frequently than required, the results of this monitoring shall be reported.
   (b)   The superintendent may specify the type of sampling equipment and flow monitoring equipment that must be installed and used. Flow monitoring equipment installed at a permitted discharger's sampling locations shall be calibrated at a frequency of at least once per year or at the frequency recommended by the manufacturer. pH monitoring equipment installed at a permitted discharger's sampling locations shall be calibrated at a frequency of at least once every six months or more frequently if recommended by the manufacturer.
   (c)   Information submitted to satisfy reporting requirements shall be based on data obtained through appropriate sampling and analysis performed during the period covered by the report, based on data that is representative of conditions occurring during the reporting period.
   (d)   All pollutant sampling techniques, analyses, and information to be included in self-monitoring reporting, submitted as part of a BMR, wastewater discharge permit application, or report, shall be performed in accordance with 40 CFR Part 136, 40 CFR 403.12(g) and amendments thereto, unless otherwise specified in an applicable categorical pretreatment standard. If 40 CFR Part 136 does not contain sampling or analytical techniques for the pollutant in question, or where the EPA determines that the Part 136 sampling and analytical techniques are inappropriate for the pollutant in question, sampling and analyses shall be performed using validated analytical methods or any other applicable sampling and analytical procedures suggested by the superintendent or other parties approved by the EPA. Samples shall be analyzed at the discharger's expense, by a laboratory accredited by the State of California Department of Public Health for such analysis.
   (e)   The detection limit used by the discharger for those substances reported as non-detectable shall be no greater than one-tenth the lowest applicable effluent limit.
   (f)   The discharger shall monitor for the toxic organic compounds specified in the National Pretreatment requirements applicable to the discharger.
   (g)   The superintendent may determine which additional toxic organic compounds shall be monitored based on those toxic organics that are representative and expected to be present. Permitted dischargers who file a toxic organic management plan, per the guidelines established by the superintendent, may analyze a subset of the additional toxic organic compounds to demonstrate compliance with the local limits for single toxic organic (STO) and total toxic organics (TTO) when specified in a discharge permit issued by the superintendent.
   (h)   The superintendent may require self-monitoring for facilities for which a permit has not been issued.
   (i)   All records generated pursuant to this section shall be maintained and made available for inspection as described in Section 16.09.160.
(Ord. 5084 § 2 (part), 2010)