Municipalities may sample and analyze user discharges in lieu of requiring the users to conduct sampling and analysis.
(a) All significant industrial users shall, at a frequency determined by the POTW director but in no case less than once every six (6) months, submit a report indicating the nature and concentration of pollutants in the discharge which are limited by pretreatment standards and the applicable flows for the reporting period. Sampling and analysis must be performed in accordance with procedures set out in sections 20-107 and 20-108 of this article. All periodic compliance reports must be signed and certified in accordance with section 20-97 of this article.
(b) If a user subject to the reporting requirement in this section monitors any pollutant more frequently than required by the POTW director, using the procedures prescribed in section 20-107 and 20-108 of this article, the results of this monitoring shall be included in the report.