Re-evaluation Note REV2018-04, Special Review Decision: Chlorthal-dimethyl
Pest Management Regulatory Agency
8 March 2018
ISSN: 1925-0649
Catalogue number: H113-5/2018-4E-PDF
(PDF Version - 104 K, 10 pages)
Table of Contents
Special Review Decision
Pursuant to subsection 17(2) of the Pest Control Products Act, Health Canada's Pest Management Regulatory Agency (PMRA) conducted a special review of all registered pest control products containing chlorthal-dimethyl, based on the 2009 European Commission regulatory decision to prohibit all of its uses in European Union member countries due to environmental concerns. The PMRA evaluated the aspects of concern that prompted the special review in accordance with the subsection 18(4) of the Pest Control Products Act. The proposed special review decision was published for consultation in the Re-evaluation Note REV2017-19, Special Review of Chlorthal-dimethyl: Proposed Decision for Consultation.
No comments were received during the consultation process. The PMRA, under the authority of the Pest Control Products Act, is confirming the current registration of pest control products containing chlorthal-dimethyl in Canada. No additional risk mitigation measures are required; however, label updates are necessary to clarify the maximum yearly application rate on all end-use products (Appendix I).
To comply with this decision, the required label changes must be implemented on all products labels sold by registrants no later than 24 months after the publication date of this document. Registrants of the products containing chlorthal-dimethyl will be informed of the specific requirements affecting their product registration(s) and of the regulatory options available to them.
Please refer to the Regulatory Directive DIR2014-01, Approach to Special Reviews, for details of the PMRA's approach to special reviews.
Other Information
Any person may file a notice of objectionFootnote 1 regarding this decision on chlorthal-dimethyl within 60 days from the date of publication of this special review decision. For more information regarding the basis for objecting (which must be based on scientific grounds), please refer to the Pesticides and Pest Management portion of Canada.ca website, Request a Reconsideration of Decision, or contact the PMRA's Pest Management Information Service.
Appendix I Label Amendments for Chlorthal-dimethyl
- The label(s) of chlorthal-dimethyl end-use products must be amended to include the following statements:
Add to DIRECTIONS FOR USE:
“The maximum yearly application rate is not to exceed 17.450 kg a.i./ha”
References
Information Considered in the Special Review not Supplied by Registrant
| PMRA Document Number | Reference |
|---|---|
| 2766578 | USEPA, 2011. Registration Review – Preliminary Problem Formulation for the Ecological Risk Assessment of Dimethyl 2,3,5,6-Tetrachloroterephtalate (DCPA). 31 May 2011. Docke Number EPA-HQ-OPP-2011-0374-0003. |
| 1600932 | Canada, 2008. Pest Management Regulatory Agency Proposed Re-evaluation Decision PRVD2008-18, Chlorthal |
| 2762068 | United States Environmental Protection Agency, 2002, DCPA (CHLORTHAL DIMETHYL): List A Reregistration Case No. 0270: Chemical No. 078701: Anticipated Residues for Chronic/Cancer Dietary Exposure. DP Barcode D283274., DACO: 12.5.7 |
| 1739329 | Woudneh, M.B., Z. Ou, M. Sekela, T. Tuominen and M. Gledhill, 2009, Pesticide Multiresidues in Waters of the Lower Fraser Valley, British Columbia, Canada Part 1. Surface Water, Journal of Environmental Quality 38(3): 940-947, DACO: 8.6 |
| 1739334 | Woudneh, M.B., Z. Ou, M. Sekela, T. Tuominen and M. Gledhill, 2009, Pesticide Multiresidues in Waters of the Lower Fraser Valley, British Columbia, Canada - Part 2. Groundwater, Journal of Environmental Quality 38(3): 948-954, DACO: 8.6 |
| 1774484 | United States Department of Agriculture (USDA), 2008, Pesticide Data Program Annual Summary, Calendar Year 2007. Science and Technology Programs, www.ams.usda.gov/pdp, DACO: 8.6 |
| 1852614 | United States Department of Agriculture (USDA), 2009, Pesticide Data Program Annual Summary, Calendar Year 2008. Science and Technology Programs, www.ams.usda.gov/pdp, DACO: 8.6 |
| 1852616 | United States Department of Agriculture (USDA), 2006, Pesticide Data Program Annual Summary, Calendar Year 2004. Science and Technology Programs, Agricultural Marketing Service, www.ams.usda.gov/science/pdp, DACO: 8.6 |
| 1852618 | United States Department of Agriculture (USDA), 2006, Pesticide Data Program Annual Summary, Calendar Year 2005. Science and Technology Programs, Agricultural Marketing Service, www.ams.usda.gov/pdp, DACO: 8.6 |
| 1852619 | United States Department of Agriculture (USDA), 2007, Pesticide Data Program Annual Summary, Calendar Year 2006. Science and Technology Programs, Agricultural Marketing Service, www.ams.usda.gov/pdp, DACO: 8.6 |
| 1857388 | United States Department of Agriculture (USDA), 2005, Pesticide Data Program Annual Summary, Calendar Year 2003. Science and Technology Programs, Agricultural Marketing Service, www.ams.usda.gov/science/pdp, DACO: 8.6 |
| 1857396 | United States Department of Agriculture (USDA), 2004, Pesticide Data Program Annual Summary, Calendar Year 2002. Science and Technology Programs, Agricultural Marketing Service, www.ams.usda.gov/science/pdp, DACO: 8.6 |
| 1857399 | United States Department of Agriculture (USDA), 2003, Pesticide Data Program Annual Summary, Calendar Year 2001. Agricultural Marketing Service, Marketing and Regulatory Programs, http://www.ams.usda.gov/science/pdp/, DACO: 8.6 |
| 2042915 | Kurt-Karakus, P.B., C. Teixeira, J. Small, D. Muir and T.F. Bidleman, 2011, Current-Use Pesticides In Ontario, Canada, Inland Lakes, Precipitation, Air and Zooplankton Samples, Environmental Toxicology and Chemistry. DOI 10.1002/etc.545, DACO: 8.6 |
| 2312776 | United States Department of Agriculture (USDA), 2011, Pesticide Data Program Annual Summary, Calendar Year 2009. Science and Technology Programs, www.ams.usda.gov/pdp, DACO: 8.6 |
| 2312778 | United States Department of Agriculture (USDA), 2012, Pesticide Data Program Annual Summary, Calendar Year 2010. Science and Technology Programs, www.ams.usda.gov/pdp, DACO: 8.6 |
| 2312780 | United States Department of Agriculture (USDA), 2013, Pesticide Data Program Annual Summary, Calendar Year 2011. Science and Technology Programs, www.ams.usda.gov/pdp, DACO: 8.6 |
| 2526164 | Choquette, A.F. and S.E. Kroening, 2009, Water quality and evaluation of pesticides in lakes in the Ridge citrus region of central Florida: U.S. Geological Survey Scientific Investigations Report 2008-5178, DACO: 8.6 |
| 2763103 | United States Environmental Protection Agency, 2008, Health Effects Support Document for Dacthal Degradates: Tetrachloroterephthalic Acid (TPA) and Monomethyl Tetrachloroterephthalic Acid (MTP), EPA Document Number EPA-822-R-08-005, DACO: 8.6 |
| PMRA Document Number | Reference |
|---|---|
| 1311104 | Environment Canada, 2004, Unpublished water monitoring data collected in BC, Pesticide Science Fund, DACO: 8.6 |
| 1311110 | Environment Canada, 2004, Presence, levels and relative risks of priority pesticides in selected Canadian aquatic ecosystems: An Environment Canada Pesticide Science Fund project. Year 1 (2003-04) Annual Report, DACO: 8.6 |
| 1311111 | Environment Canada, 2005, Unpublished Pesticide Science Fund Annual Report 2004-2005 (Water, Air, Plants, Mammals and Amphibians; and Rish and Birds), DACO: 8.6 |
| 1311112 | Environment Canada, 2004, Unpublished National Water Monitoring Data. Pesticide Science Fund (2004), DACO: 8.6 |
| 1726638 | Environment Canada, Pesticide Science Fund Annual Report 2006-2007, DACO: 8.6, 9.9 |
| 1971119 | 2010, Raw Unpublished Pesticide Science Fund Water Monitoring from Mill Creek British Columbia, DACO: 8.6 |
| 2763094 | California Department of Pesticide Regulation, 2015, Surface water monitoring data on chlorthal and transformation products, Database as of June 2015. Downloaded October 14, 2015 http://www.cdpr.ca.gov/docs/emon/surfwtr/surfcont.htm, DACO: 8.6 |
| 2763095 | United States Environmental Protection Agency, 2016, Water monitoring data for chlorthal-dimethyl and chlorthal-monomethyl from the US EPA's Storage and Retrieval (STORET) Data Warehouse. Downloaded April 20, 2016, https://ofmpub.epa.gov/storpubl/dw_pages.querycriteria, DACO: 8.6 |
| 2763098 | United States Geological Survey, 2015, USGS National Water Quality Assessment (NAWQA) program water monitoring data for DCPA, Downloaded October 14, 2015. http://cida.usgs.gov/nawqa_queries_public/, DACO: 8.6 |
| 2763099 | United States Geological Survey, 2015, USGS National Water Quality Assessment (NAWQA) program water monitoring data for DCPA monoacid, Downloaded October 14, 2015. http://cida.usgs.gov/nawqa_queries_public/m, DACO: 8.6 |
| 2763244 | United States Geological Survey, 2015, USGS National Water Quality Assessment (NAWQA) program water monitoring data for DCPA monoacid, Downloaded October 14, 2015. http://cida.usgs.gov/nawqa_queries_public/m, DACO: 8.6 |
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