When you apply for registration of a pesticide in Great Britain and Northern Ireland, you need to submit an assessment of surface water exposure via drainflow. If you cannot show an acceptable risk using lower tier methods, you will need to submit a higher tier drainflow exposure assessment.
The HSE HTDF MACRO tool is a valuable tool for assessing the environmental fate of pesticides and is widely used in the pesticide registration process. It allows users to create detailed computer simulations of the behaviour of pesticides in soil and water systems, which can be used to develop risk assessments.
The Health and Safety Executive (HSE) has released a new version of the HSE HTDF MACRO tool (v2.1), which is now available for download on the HSE website. This new version addresses a minor bug issue that was present in the previous version (v2.0), where a small number of ZFINT and AMIR parameters were incorrectly being rounded to a whole number, instead of being displayed with two decimal places.
Applicants are strongly encouraged to use the new version (v2.1) in their modelling going forward. HSE will be validating all HTDF submissions received using v2.1 or later, so it is important to ensure that you are using the most up-to-date version of the tool. If you have already submitted modelling using v2, you do not need to take any action at this time.
It is important to note that the HSE will no longer be accepting applications that use modelling conducted with v1.1 of the HSE HTDF tool after 31 May 2023. This means that if you have not already updated to the new version (v2.1), you should do so as soon as possible to ensure that your submissions are not impacted by this change.
In conclusion, the new version of the HSE HTDF MACRO tool (v2.1) is now available for download on the HSE website. It is important for applicants to use this new version in their modelling going forward to ensure that their submissions are not impacted by the upcoming change in HSE’s policy on accepting applications that use modelling conducted with v1.1. By using the most up-to-date version of the tool, we can ensure that the assessments of pesticide fate and behaviour are accurate and up-to-date.
If you need assistance with supporting your PPP e-fate section for GB dRR submissions please do not hesitate to contact our PPP team at email@example.com or call the office at +353 (0)1 849 5284