WELKOM BIJ EPP CONSULTANCY / WELLCOME AT EPP CONSULTANCY

EPP Consultancy

Environmental Pollutants & Pesticide Fate

Homeruslaan 22
NL-3707 GS Zeist
The Netherlands
Phone: ++31 30 691 9210
Fax: ++31 30 691 9210
E-mail: j.w.vonk(at mark)hetnet.nl

Director: Dr. J.W. Vonk

Because of spam no e-mail link will be given.

Consultancy in the field of:
- The fate and effects of substances (including heavy metals) in the environment. Specialised in the fate of (pesticide) chemicals in soil and sediment, surface water and groundwater, and transport (leaching) processes in soil.
- Effects on soil and aquatic organisms.
- Advise on environmental matters of registration.

Detailed experience:
- Rate and route of degradation of pesticides and organic chemicals in soil, subsoil, groundwater and ditch sediment.
- Metabolism, bound residues and mineralisation.
- Mobility and transport of pesticides and organic chemicals in soil.
- Risk of groundwater pollution.
- Adsorption / desorption in soil.
- Effects of chemicals on micro-organisms, especially soil microbial processes.
- Effects of pesticides on soil respiration and nitrification.
- Soil microbiology.
- Ecotoxicology in soil and water.

Dr.J.W. Vonk is a member of the Royal Dutch Chemical Society (KNCV) Consultancy Group.
He has much experience in helping the CTB (Dutch Board of Authorization of Pesticides) in matters of summarizing and evaluating dossiers for the approval of pesticides.
Member of the Dutch Platform on Higher Tier Studies

Recent publications:

Assessment of the fate of agrochemicals in surface waters
In: Proceedings Int. Conf. on Environmental Risk Assessment for Agrochemicals
London, 25-26 Jan. 2000;

Concentration in shallow groundwater of rapidly degrading pesticides and metabolites with weak adsorption to soil. Calculations with PESTLA 3.3., April 8,1999

Modelling of the rate of degradation of pesticides in soil, Febr. 10, 2001.

The mobility of ionisable pesticides in relation to soil pH, Febr. 10, 2001.

Newsletter of EPP, No.1 May 1999, No. 2, Febr. 2001

These publications will be sent on request

A lecture on: Surface- and Groundwater Pollution by Agriculture in the Netherlands was given in Japan, Sept. 29, 2000 in the Tamagawa University, Tokyo, on the occasion of 400 years relation of The Netherlands and Japan.

In the case of statistics, complex parameter estimation or fate modelling EPP will often co-operate with:

ECOSTAT, Statistical Consultancy, of Dr. N. van der Hoeven

List of activities of EPP Consultancy
(in preparation)

- Consultancy on the modelling of the fate of a fungicide in surface water
- Search for the site of special soil types in The Netherlands
- Consultancy on the registration of a herbicide
- Editorial management of a report on zinc ecotoxicology
- Study report summaries and evaluation, and risk assessment for the Dutch Pesticide Registration Board.
- Preparation of CTB decission documents
- Monitoring of contract research on pesticide degradation in soil and water
- Consultancy on subsoil degradation of pesticides and many other activities in these fields
- Calculations of half-lives of metabolites in soil with the program ModelMaker
- Preparation of the environmental parts (Annex II 7 & 8, Annex III 9 & 10) of EU registration dossiers for placement on Annex I
- Preparation of the environmental parts of EU Biocide Annex I registration dossiers
- Classification of pesticides for environmental aspects in the framewerk of Directory 1999/45/EC modified by 2006/8/EC
- Internal course for a Dutch Research Organisation on Interaction, Fate and Metabolism of Pesticides in Soil and Sediment.
- Derivation of Environmental Risk Limits for surface water for 7 pesticides for the application in the Water Framework Directory in The Netherlands.