ATLANTA, GA, May 18 /PRNewswire/ – AMEC, the international engineering and
project management company, announces today that it has agreed to buy
MACTEC, a leading engineering and environmental services company, for a
cash consideration of US$280 million.

Headquartered in Alpharetta, Ga., MACTEC has some 2,600 employees,
mostly highly skilled technical professionals, and 70 offices, the
majority of which are in the Eastern U.S. It provides a similar wide
range of services to AMEC’s existing Earth & Environmental (E&E)
business, including environmental planning, assessment and remediation,
infrastructure engineering, water resources and construction support
services. MACTEC has a high quality, long term, public and private
sector client base and provides a broad range of environment and
infrastructure services to the energy, commercial/industrial,
transportation/infrastructure and federal sectors. In North America,
E&E has a strong presence in the Western U.S. and in Canada, so the
combination allows AMEC greater access to new clients and regions and
MACTEC a better international platform for growth.

Neil Bruce, Chief Operating Officer of AMEC, said: “This acquisition is
fully aligned with AMEC’s Vision 2015 growth strategy and provides us
with the right scale to service this important and growing
environmental and infrastructure engineering services market.”

Hisham Mahmoud, President of AMEC’s E&E business, added: “MACTEC and E&E
have a complementary client base and service offering, with minimal
overlay in geographic coverage. Our combined business significantly
enhances our competitive position in the U.S. market and is in line
with our strategy of global geographic expansion.”

Ann Massey, President and Chief Executive Officer of MACTEC said: “We
are very excited to add MACTEC’s technical capability, resources, and
customer base to AMEC’s successful business. Together, we offer a
strong, global platform of consulting, engineering, and project
management expertise. The close alignment between our companies’
cultures, services and expertise will provide immediate value to our
clients and foster future growth.”

The combined E&E business will be headquartered in Alpharetta and led by
Hisham Mahmoud. It will have more than 7,000 employees around the globe
and bring AMEC’s total North American workforce to almost 14,000. Ms.
Massey and her management team are expected to remain with the combined
entity and contribute to its continued growth.

Notes to Editors:

• AMEC plc (LSE: AMEC) is a focused supplier of high-value consultancy, engineering
  and project management services to the world’s oil and gas, minerals
  and metals, clean energy, water and environmental sectors. With annual
  revenues of almost US$5 billion, AMEC designs, delivers and maintains
  strategic and complex assets for its customers. AMEC’s Natural
  Resources, Power & Process and Earth & Environmental businesses employ
  around 23,000 people in more than 40 countries globally. amec.com

• MACTEC (www.mactec.com), based in Alpharetta, Ga., is a leading engineering and design,
  environmental, and construction firm focused on four strategic business
  lines: Industrial/Commercial, Infrastructure (Transportation and
  Municipal), Energy, and Federal. MACTEC offers an ever-broadening
  portfolio of sustainable solutions, from renewable energy to facility
  asset management. With annual revenues of more than $411 million,
  MACTEC’s 2,600 employees work from over 70 offices nationwide. MACTEC
  consistently ranks in the top 10 percent of Engineering News-Record’s Top 500 Design Firms.

SOURCE AMEC