Proposed Rules

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    The following are summaries and other information related to Proposed Rules that the Missouri Department of Natural Resources has submitted to the Secretary of State for Publication in the Missouri Register. These rules will not go into effect until the public has had an opportunity to submit written comments, and to attend a public hearing if one is scheduled.

    Any person may offer comments on a Proposed Rule. The instructions for submitting comments, and the location and date of a hearing if one is scheduled, are located after the text of each rule. Please note that the official text of a Proposed Rule is the version that appears in the Missouri Register, not the draft copy on this site.

    Information on Rules in Initial Development follows the Proposed Rules information. The dates provided in this section are subject to change.

    We hope you find this site helpful and informative.

    To view more detailed information about the rules in development, select here.

    Proposed Rule
    Summary
    Fiscal Note(s)
    Supporting Documents
    Link to Missouri Register
    Small Business Impact Statement
    Date Posted
    10 CSR 20-2.010
    This proposed rule amendment provides revised and additional definitions to terms used across 10 CSR 20-6, 10 CSR20-7, 10 CSR 20-8, and 10 CSR 20-9. Revised and newly added language both aim to improve clarity, while newly added language further aims to consolidate widely referenced terms and standardize their definitions.
    No
    10 CSR 20-2.010
    No
    08/15/2025
    10 CSR 20-6.015
    The proposed rule amendments to 10 CSR 20-6.015 set requirements for facilities with Missouri State Operating Permits wishing to land apply industrial wastewater or wastewater treatment residuals as a method of treatment, and for open storage basins and open storage vessels which hold and store commingled industrial wastewater and wastewater treatment residuals. These revisions include operating permit application requirements, minimum operating permit condition requirements, requirements for commingled offsite industrial wastewater or treatment residuals stored in open storage basins or open storage vessels, and groundwater monitoring and reporting requirements.
    No
    Draft - Commingled Wastewater Chain-of-Custody Record
    Nutrient Management Technical Standard for Industrial WW and WW Treatment Residuals
    Regulatory Impact Report
    10 CSR 20-6.015
    No
    08/15/2025
    10 CSR 20-6.020
    The department has reviewed 10 CSR 20-6.020 and believes it is necessary to amend the rule to incorporate electronic correspondence via electronic mailing. Incorporating provisions to allow for notices to be sent via electronic mail will allow for faster and more efficient correspondence between the department, stakeholders, and impacted permittees. Additionally, the department has reviewed other areas of 10 CSR 20-6.020 and believes revisions are needed to improve the clarity within rule.
    No
    10 CSR 20-6.020
    No
    08/15/2025
    10 CSR 20-6.060
    The proposed amendments to this rule provide definitions for terms used throughout 10 CSR 20-6.060 that were previously undefined. Addition of these definitions will improve clarity for the Clean Water Act §401 Water Quality Certification process. Language throughout the rule has been updated to match federal regulations and current department standards.
    No
    10 CSR 20-6.060
    No
    08/15/2025
    10 CSR 20-6.200
    This rule provides revised definitions for municipal stormwater designations to match changes to the federal regulations. Revised and newly added language aligns with the relevant federal regulations and to correct errors in forms, grammar and references, and to provide clarity.
    No
    10 CSR 20-6.200
    No
    08/15/2025

    Rules in Development

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