We propose to extend and update existing hardware and Software facilities in 14 countries of Central Europe to an interdisciplinary multi-Purpose GNSS sensor array for environmental monitoring. Data acquired during the last 8 years will be supplemented by this proposal, which ensures monitoring during the next decade. Primary products are weekly coordinates and hourly zenith delay estimates and discrete values for epoch stations. Analysis of long term coordinate time series allows for the monitoring of crustal movements, the derivation of velocity fields and of geo-kinematic models and strain fields. Sub-regional campaigns investigate seismic active regions for hazard detection and possible mitigation. Hourly zenith delays act as a possible input for European weather forecast models. A by- product for public use are data for real-time navigation and precise positioning, a web-based seamless data bank will report on the results.