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Pöyry awarded engineering and site supervision services assignment for a wastewater treatment plant extension in Switzerland Vantaa, Finland, 15-Jan-2016 — /EuropaWire/ — The wastewater association Gewässerschutzverband der Region Zugersee, Küssnachtersee, Aegerisee (GVRZ) has awarded Pöyry with the engineering and site supervision … Read the full press release