Health Canada's Pest Management Regulatory Agency (PMRA) is proposing to cancel the some uses of fungicide chlorothalonil based on the human health risk assessment. The proposed cancellations include:
• Agricultural uses: blueberry, highbush; blueberry, lowbush; celery, field; cherry (sweet and sour); chickpea; Cole crops; conifers (outdoor and nursery beds); corn, sweet; cranberry; evening primrose; lentil; nectarine; onion (dry and green); ornamentals (greenhouse and outdoor); pea, dry; peach; wheat; and turf (except for control of snow mould);
• Material preservative use: paint.
After re- evaluation, the PMRA has revised the occupational and residential risk assessments with more information relevant to the potential effects of chlorothalonil on human health, particularly via dermal exposure. All other components of the proposed re-evaluation decision for chlorothalonil remain as originally described in formal files.
Based on the revised occupational and residential risk assessments for chlorothalonil, the PMRA has determined that under the revised conditions of use, some agricultural uses of chlorothalonil do not present unacceptable risks to human health. These uses include asparagus, carrot, celery (seedbeds only), cucurbits, ginseng, mushroom, parsnip, potato, strawberry, tomato, turf (for control of snow mould only). As a condition of continued registration of these uses, new risk-reduction measures are proposed to be included on the labels of pest control products containing chlorothalonil.
The PMRA is inviting stakeholders to submit comments on Re-evaluation decision of chlorothalonil, as well as detailed proposals to further refine the risk assessment and mitigate risks. The PMRA will accept comments and proposals before April 10.
Before making a final re-evaluation decision on chlorothalonil, the PMRA will consider all comments received in response to the previously published Proposed Re-evaluation Decision, along with any comments or proposals submitted in response to this amended proposed re-evaluation decision. A science-based approach will be applied in making a final decision on chlorothalonil.
If no proposals to refine the risk assessment are received, or if those received are inadequate, then the PMRA will proceed to finalize the re-evaluation decision to cancel the chlorothalonil uses specified in this document.