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Incident Report

Subform I: General Information

1. Report Type.

New incident report

Incident Report Number: 2022-1905

2. Registrant Information.

Registrant Reference Number: M-801741-01-2

Registrant Name (Full Legal Name no abbreviations): Bayer CropScience Inc.

Address: Suite 200, 160 Quarry Park Boulevard SE

City: CALGARY

Prov / State: AB

Country: Canada

Postal Code: T2C 3G3

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.

PMRA Registration No.       PMRA Submission No.       EPA Registration No. 432-1534

Product Name: Aqua K-Orthrine

• Active Ingredient(s)
  • DELTAMETHRIN

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 Environmental Biological Toxicity Test Report of 20 g/L Deltamethrin Aqueous Emulsion Final Report

Date 26-AUG-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)

Two of the studies in this report have lower endpoints than those previously reported. One is a Japanese quail (not native to North America) acute oral LD50 of 226 mg/kg bw. The second is an algae EC50 of 0.0271 mg/L with the species Chlorella vulgaris.

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?

For Registrant use only

7. Provide supplemental information here

These studies were conducted with formulated end use product as an emulsion in water at 20 g ai/L or 2.0% w/w. This product has a relatively low concentration of active ingredient and a large concentrations of organic compounds acting as emulsifiers. The reported Japanese quail endpoint was extrapolated from the data in which the highest test concentration was 200 mg ai/kg bw and had a 40% mortality rate. In terms of formulated product, this LD50 (226 mg ai/kg) is equivalent to 11,300 mg form/kg bw. The algal EC50 (0.0271 mg ai/L) is equivalent to 1.36 mg form/L.