The CHEMPARK Dormagen has a special Visitor Reception Center, which
is situated along the Neusser Landstrasse, Tor 10 (gate 10). Please follow the signs showing you how to get there. The Center has plenty of parking space and it is from here that you will be issued your visitor ID card.
 
The address of the Visitor Reception Center is as follows:  
CHEMPARK Dormagen
Zentraler Besucherempfang, gate 10
Neusser Landstrasse 501
D-50769 Köln 

Gateway to the CHEMPARK for trucks:
Gate 14
Alte Heerstraße / K 18
D-41540 Dormagen

Arriving by train and bus
The CHEMPARK Dormagen is conveniently accessible by public transport.

S-Bahn local trains to the CHEMPARK site:

S-Bahn trains run every 20 minutes on weekdays, and every half hour at weekends.

From Köln Hauptbahnhof (Cologne Central Station):
S 11 train towards Düsseldorf Flughafen Terminal

From Düsseldorf Hauptbahnhof (Düsseldorf Central Station):
S 11 train towards Bergisch Gladbach

Arriving by plane
The nearest airports from Dormagen are Düsseldorf (about 90 minutes by public transport) and Cologne/Bonn (about 60 minutes).

Düsseldorf Airport:
S-Bahn local train S7 via Düsseldorf Hauptbahnhof (Düsseldorf Central Station) to Dormagen CHEMPARK. The train runs every 20 minutes in the daytime and every half hour in the evening.

Cologne/Bonn Airport:
S-Bahn S13 to Köln Hauptbahnhof (Cologne Central Station)
The service runs every 20 minutes on weekdays, and every half hour at weekends.
Then: S-Bahn local train S11 towards Düsseldorf Flughafen Terminal. Get off at Dormagen CHEMPARK. The service runs every 20 minutes on weekdays, and every half hour at weekends.

Have a good trip!