Premium
Pesticide exposure assessment for surface waters in the EU . Part 2: Determination of statistically based run‐off and drainage scenarios for Germany
Author(s) -
Bach Martin,
Diesner Mirjam,
Großmann Dietlinde,
Guerniche Djamal,
Hommen Udo,
Klein Michael,
Kubiak Roland,
Müller Alexandra,
Preuss Thomas G,
Priegnitz Jan,
Reichenberger Stefan,
Thomas Kai,
Trapp Matthias
Publication year - 2017
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.4519
Subject(s) - environmental science , european union , surface water , authorization , scenario analysis , workgroup , drainage , environmental resource management , hydrology (agriculture) , computer science , environmental engineering , business , engineering , ecology , computer security , geotechnical engineering , finance , biology , economic policy , computer network
BACKGROUND In order to assess surface water exposure to active substances of plant protection products ( PPPs ) in the European Union ( EU ), the FOCUS ( FOrum for the Co‐ordination of pesticide fate models and their USe ) surface water workgroup introduced four run‐off and six drainage scenarios for Step 3 of the tiered FOCUSsw approach. These scenarios may not necessarily represent realistic worst‐case situations for the different Member States of the EU . Hence, the suitability of the scenarios for risk assessment in the national authorisation procedures is not known. RESULTS Using Germany as an example, the paper illustrates how national soil–climate scenarios can be developed to model entries of active substances into surface waters from run‐off and erosion (using the model PRZM ) and from drainage (using the model MACRO ). In the authorisation procedure for PPPs on Member State level, such soil–climate scenarios can be used to determine exposure endpoints with a defined overall percentile. CONCLUSION The approach allows the development of national specific soil–climate scenarios and to calculate percentile‐based exposure endpoints. The scenarios have been integrated into a software tool analogous to FOCUS‐SWASH which can be used in the future to assess surface water exposure in authorisation procedures of PPPs in Germany. © 2017 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.