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Incident Report
Subform I: General Information
1. Report Type.
New incident report
Incident Report Number: 2009-1706
2. Registrant Information.
Registrant Reference Number: 052109-01-MCPBTF
Registrant Name (Full Legal Name no abbreviations): MCPB Task Force (members: Nufarm Limited [previously AH Marks Co. Ltd.] and Nufarm b.v.)
Address: 44 Tamarack Circle
City: Toronto
Prov / State: Ontario
Country: CANADA
Postal Code: M9P 3T9
3. Select the appropriate subform(s) for the incident.
Scientific Study
4. Date registrant was first informed of the incident.
5. Location of incident.
6. Date incident was first observed.
Product Description
7. a) Provide the active ingredient and, if available, the registration number and product name (include all tank mixes). If the product is not registered provide a submission number.
Active(s)PMRA Registration No. 21808 PMRA Submission No. EPA Registration No.
Product Name: MCPB
- Active Ingredient(s)
- MCPB (PRESENT AS SODIUM SALT)
7. b) Type of formulation.
Application Information
8. Product was applied?
Unknown
9. Application Rate.
10. Site pesticide was applied to (select all that apply).
11. Provide any additional information regarding application (how it was applied, amount applied, the size of the area treated etc).
To be determined by Registrant
12. In your opinion, was the product used according to the label instructions?
Unknown
Subform VII: Scientific Study
1. Study Reference
Title Notification of Possible 6(a)(2) Data; MCPB Task Force; MCPB Rate of Degradation of MCPB in Three Soils - Additional Information
Date 19-MAY-09
2. a) Is an extension needed to translate the document?
No
3. Type of incident identified in the study
Increased health or environmental risk
4. Describe the incident identified in the study (e.g. study demonstrates an increased risk to non-Hodgkin's Lymphoma after exposure to pesticide X)
Provides new information on the metabolism/degradation of MCPB in soils than was previously submitted to PMRA. The study results do not, however, present adverse effects. The MCPB Task Force has investigated the rate of degradation of MCPB in three additional US soils of varying type in a guideline compliant study (E.Fate Series 162-1: Aerobic Soil Metabolism); this study will be reported by Battelle UK Limited (Report # FK/08/001) in due course. CONCLUSION: It can be concluded that MCPB will not persist in the environment, being dissipated in aerobic soil via one major metabolite and numerous minor metabolites to form carbon dioxide and soil bound residues. The rate of metabolism in all of the soils was more rapid than previously determined with a mean half life DT50 of 4.7 days from the current studies. When combined with the half-life determined from the previous study the mean value is approximately 7.8 days, indicating substantially reduced environmental risk, compared to earlier calculations.
5. a) Was the study discontinued before completion?
No
5. b) Provide the reason for discontinuation
6. If the study is ongoing, what is the expected completion date?
Unknown
