Reassessment of chlorthal-dimethyl containing substances

[b]Overview[/b] The EPA has initiated a full reassessment of chlorthal-dimethyl containing substances because information about its risks to human health and the environment shows the risks from its use outweigh the benefits. The approval for chlorthal-dimethyl-containing substance (i.e. HSR000646) will be reassessed under section 63 of the Hazardous Substances and New Organisms Act 1996 (HSNO Act).  [url=https://www.epa.govt.nz/public-consultations/open-consultations/proposed-ban-on-chlorthal-dimethyl-dcpa-weedkiller/]Reassessment of chlorthal-dimethyl containing substances – proposed ban: EPA public consultations[/url]  [b]EPA proposal: immediate ban with 6-months for disposal [/b]We propose to ban the use of chlorthal-dimethyl by revoking the approval of chlorthal-dimethyl containing substances. The ban would mean chlorthal-dimethyl containing substances can no longer be imported, manufactured or used in New Zealand.  The ban would be immediate, with six months to dispose of any existing stocks of chlorthal-dimethyl products.  [b]View our proposal and assessments of risks and benefits [/b] [b](Addlinks)[/b]To initiate this reassessment, we completed the reassessment application form. [url=https://www.epa.govt.nz/assets/FileAPI/hsno-ar/APP204896/APP204896-Application-form-to-reassess-chlorthal-dimethyl-containing-substances.pdf]Application form (PDF, 341B)[/url] Our proposal is based on assessments of human health risks, environmental risks, impacts on Māori, economic benefits and costs, and advice from WorkSafe. For the details of the changes we propose, and how we weighed up these risks and benefits, read the staff assessment report. [url=https://www.epa.govt.nz/assets/FileAPI/hsno-ar/APP204896/APP204896-Staff-assessment-report.pdf]EPA staff assessment report (PDF, 551KB)[/url] It summarises information from: ·       Appendix A: Temporary restrictions put in place in 2024 (included in Staff assessment         report) ·       Appendix B: Science memo (quantitative human health risk assessment) ·       Appendix C: Science memo (qualitative environmental risk assessment) ·       Appendix D: Māori Impact Assessment (MIA) ·       Appendix E: Sapere Economic assessment report ·       Appendix F: WorkSafe advice report [b]Feedback we’re seeking [/b] We’d like to get your feedback on our proposal to revoke chlorthal-dimethyl containing substances. To help prompt your responses we have asked questions for you to consider. We also welcome any general feedback on the reassessment. Including quantitative data will make your submission more effective. We especially would like feedback:  ·       on our proposal to ban chlorthal-dimethyl containing substances and the proposed transition period. ·       on the use of chlorthal-dimethyl in New Zealand ·       on the adverse effects and risks associated with the use of chlorthal-dimethyl, including any risks associated with use that are different to the risks assessed by the EPA ·       on potential methods to mitigate risks or reduce exposure from use of chlorthal-dimethyl, including the practical ability or feasibility to implement mitigation measures assessed by the EPA ·       on potential benefits from the use of chlorthal-dimethyl, including economic benefits ·       with information specific to the impacts of the substance no longer being available for use ·       from iwi, hapū and hapori Māori (Māori communities) on potential effects, including any benefits and/or concerns ·       with any other information which would help refine the EPA’s assessment and consideration of use, exposure, risks, benefits and mitigations. [b]Submitting your form [/b] You do not have to answer all questions. [b]Attach the supporting documents at the end of this form[/b]  You can provide attachments. Please explain in your responses what these attachments show. You upload any attachment documents at the end of this form. You do this on the next page, after clicking 'Continue'.  [b]Submissions close on 6 October 2025[/b] If you need any help with the form, you can call or email us: ·       0800 208 338 (from within New Zealand) ·       +64 04 916 2426 (from overseas) ·       email: [url=mailto:reassessments@epa.govt.nz]reassessments@epa.govt.nz [/url] You can get more information on making a submission on our website:  [url=https://www.epa.govt.nz/public-consultations/how-to-make-a-submission]How to make a submission | EPA [/url] [b]What happens after you make a submission?[/b] We’ll let you know we’ve received your submission by email or post. When the consultation closes, we’ll analyse all submissions and may publish a report on the EPA website. This may include an update to our proposal. If any submitters asked to speak at a hearing, we’ll hold one. If you said in your submission you want to present, then you’ll be able to speak to your submission. If not, you can still attend. The decision-making committee set up to consider the application will assess the information from the submissions, any hearing, and from the EPA, and make their decision. We will publish this on the EPA website. [b]Publishing submissions[/b] All submissions (including submitter names) will be published on our website at [url=http://www.epa.govt.nz/]www.epa.govt.nz[/url]. We will not publish any personal contact details.  [b]Confidential information[/b] If you think your submission contains confidential information, please make this clear in your submission. Reasons may include, for example, that the information discloses commercially sensitive information. If you would like more information about how we treat confidential information, see the section [url=https://www.epa.govt.nz/industry-areas/hazardous-substances/making-an-application/supplying-confidential-or-commercially-sensitive-information-under-the-hsno-act/]Supplying confidential or commercially sensitive information under the HSNO Act[/url] on our website. [b]Privacy statement[/b] The EPA is collecting your personal information for the purpose of considering feedback on the proposals in this document. We will store your personal information securely. We may use your contact details to contact you about your submission if necessary. You have the right to access the personal information we hold about you and to ask for it to be corrected if it is wrong. If you would like to access your personal information, or have it corrected, please contact us at [url=mailto:info@epa.govt.nz]info@epa.govt.nz[/url].  [b]Confidential details[/b] The Official Information Act 1982 (OIA) applies to all information held by the EPA (subject to section 55 of the Hazardous Substances and New Organisms Act 1996), and information may be released under the OIA unless there are grounds to withhold it. Further information on the OIA is at [url=http://www.ombudsman.parliament.nz/]www.ombudsman.parliament.nz[/url] Please fill in the form below, then click Continue to review your submission. At any time you may click Save and Exit so that you can return later.

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Section 1 - EPA proposals
Section 2 – Use
Section 3 - Risks and mitigations
Section 4 – Benefits and costs of ban
Section 5 – Impacts on Māori. Under section 6 of the HSNO Act, we are required to consider whether the use of chlorthal-dimethyl affects the relationship of Māori and their culture and traditions with their ancestral lands, water, sites, wāhi tapu, valued flora and fauna, and other taonga. We must also consider any impacts on Māori rights under Te Tiriti o Waitangi (The Treaty of Waitangi).
General feedback
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