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Bystander & Resident Exposure

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Bystanders are defined by European Commission Regulation No 284/2013aspeople who casually are located within, or directly adjacent, to an area where application of a plant protection product is in process or has taken place, but not for the purpose of working on the treated area or with the treated commodity.

Regulation No 284/2013 defines residents as people who live, work or attend any institution near to areas that are treated with plant protection products, but not for the purpose of working on the treated area or with the treated commodity.

European Commission Regulation No 284/2013 sets out the data requirements (in accordance with EC Regulation No 1107/2009) concerning the placing of plant protection products on the market. Article 7.2.2 of EC Regulation No 284/2013 details how bystander and resident exposure to active substances and toxicologically relevant compounds in a plant protection product shall be assessed. A copy of EC Regulation No 284/2013 may be accessed by clicking on the following link:

The European Food Safety Authority (EFSA) guidance document on the assessment of operator, worker and resident & bystander exposure to plant protection products was noted at the Standing Committee on Pesticides, Animals, Food and Feed meeting on 28/29th May (2015) with an agreed implementation date of 1st  January 2016.  All applications received by the Health & Safety Executive (HSE) must reflect this guidance.

The EFSA guidance document and associated exposure calculator can be found using the following link:


Updated 2020-07-17