ok-1231: Department of Environmental Quality — Oklahoma Pollutant Discharge Elimination System (OPDES) Standards
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The gist of this rule and the underlying reason for the rulemaking is to update its rules concerning the date of incorporation by reference for the Code of Federal Regulations from July 12, 2023, to July 8, 2024. The first regulatory change was the Clean Water Act Section 401 Water Quality Certification Improvement Rule that became effective November 27, 2023. The purpose of the final rule was to provide stakeholders with a clear and consistent certification process while ensuring protection of vital state, territory, and Tribal water resources. The second regulatory change, effective on June 17, 2024, consisted of EPA finalizing changes to its test procedures required to be used by industries and municipalities when analyzing the chemical, physical, and biological properties of wastewater and other samples for reporting under the EPA's National Pollutant Discharge Elimination System permit program. This provides timelier access to new measurement techniques and greater flexibility in the selection of analy
The agency’s own summary, as published.
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