Pöyry - Company Announcement

Pöyry awarded EUR 6.1 million tunnel project in Mexico

PÖYRY PLC          Company Announcement 4 May 2010 at 11.20 a.m.

CONAGUA, Comisión Nacional del Agua has awarded Pöyry a project to provide
specialized advisory services during the construction of the largest wastewater
tunnel in the world, with a length of 62 km and a depth of 200 m. The value of
Pöyry's assignment is EUR 6.1 million.

The consulting services provided by Pöyry cover the scheduling, risk management,
interface management, performance monitoring of the tunnel boring machines and
the installation of Pöyry's 2DOC underground data management system. The
services will be completed by December 2012.

This project will significantly reduce the risk of flooding in Mexico City and
it will improve the safety and wellbeing of the inhabitants and protect their
properties. The new tunnel will add about 150 cubic metres of water per second
capacity once complete.

Pöyry has a very long experience in carrying out tunnel projects worldwide:
railway and metro tunnels, road tunnels, water and wastewater tunnels, vertical
and inclined shafts, caverns and shelters.

PÖYRY PLC

Additional information by:
Andy Goodwin, President, Urban & Mobility Business Group, Switzerland
Tel. +41 44 355 5555
Sanna Päiväniemi, Director, Investor Relations, Pöyry PLC, Finland
Tel. +358 10 33 23002

Pöyry is a global consulting and engineering company dedicated to balanced
sustainability. We offer our clients integrated management consulting, total
solutions for complex projects and efficient, best-in-class design and
supervision. Our in-depth expertise extends to the fields of energy, industry,
urban & mobility and water & environment. Pöyry has 7000 experts operating in
about 50 countries, locally and globally. Pöyry's net sales in 2009 were EUR
674 million and the company's shares are quoted on NASDAQ OMX Helsinki (Pöyry
PLC: POY1V).

DISTRIBUTION:
NASDAQ OMX Helsinki
Major media
www.poyry.com



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