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Benchmark Monitoring Data Analyses under the Multi-Sector General Permit

Benchmark monitoring analyses submission deadline is March 31 of each calendar year.

HOTUPDATEEpisodic Waiver from Electronic Reporting in NetDMR from January 31, 2022 to April 1, 2022

UPDATE Please Note: Effective August 14, 2021, the MSGP requires permittees to submit all analytical results for determining compliance with effluent limitations and benchmark monitoring electronically using the online NetDMRExit the TCEQ reporting system. However, the NetDMR reporting system is not yet ready to accept data from MSGP permittees. Therefore, TCEQ is implementing an Episodic Waiver from electronic reporting in NetDMR for all MSGP permittees.

MSGP permittees must submit paper (DMRs) by mail to:

TCEQ (MC 213)
P.O. Box 13087
Austin, TX 78711-3087

Paper DMRs must be submitted to TCEQ by March 31, 2022.

Reporting of analytical results for compliance with effluent limitations and benchmark monitoring for the 2022 calendar year MSGP monitoring periods will be required to be submitted electronically in the NetDMR reporting system by March 31, 2023. TCEQ anticipates that the NetDMR system will be available for these submittals as early as Summer 2022.

*Note that not all sectors are required to conduct benchmark monitoring. Those sectors which are required to conduct benchmark monitoring are listed in Part IV of the (MSGP) (TXR050000Adobe Acrobat PDF Document) for stormwater discharges from certain industrial activities. Please refer to Parts IV and V of the MSGP to determine your specific requirements.

What am I supposed to submit?

For those sectors required to conduct benchmark monitoring under the MSGP:

  • Semi-annual sampling must be conducted at least once during the first full monitoring period (January through June or July through December) following permit issuance, and then once during each monitoring period for the term of the general permit.

  • Results of analyses for sampling shall be submitted to the TCEQ before March 31st of each year.

  • Samples should be collected from internal or external outfalls where BMPs are installed.

  • The reported values shall be the average yearly result of analysis for each specific pollutant discharged under a specific Standard Industrial Classification (SIC) code or industrial activity code.

Contact us if you have questions.