Advies
| Boralit NV | Aalter (B) |
| Procter&Gamble | Brussel (B) |
| Waterschap Zuiderzeeland | Lelystad |
| Zuiveringsschap Limburg | Roermond |
| Corntec GmbH | Meppen (D) |
| DMT-ET | Joure |
| Arcadis | Amsterdam |
Haalbaarheid onderzoek
| Ministerie VROM | Den Haag |
| Mts. Vermue Poelma | Winsum (Gr) |
| Bos Bolsward | Bolsward |
| Rinagro | Piaam |
| Wavin/Limitec | Hardenberg |
| Corntec GmbH | Meppen (D) |
| DMT-ET | Joure |
| Sterk Beton | Alkmaar |
| HoSt | Hengelo |
Projectmanagement
| Arcadis | Amsterdam |
| PTC+ | Oenkerk |