Missouri Governor Unveils Renewable Energy Project

Economy, Citizens Benefit from Innovative Landfill Gas and Waste Heat
Utilization Project

JEFFERSON CITY, Mo., Oct. 19 /PRNewswire-FirstCall/ -- Governor Jay Nixon
today cut the ribbon on an innovative, new renewable energy project in
Jefferson City, Missouri. This renewable energy project, developed through a
partnership between Republic Services, Ameresco, Columbia Water & Light, and
the State of Missouri, was recently featured at The White House in a meeting
hosted by Treasury Secretary Tim Geithner and Energy Secretary Steven Chu. The
project was highlighted for its contribution to creating jobs while helping
expand the development of clean, renewable domestic energy.

"This project creates a clean, reliable and consistent source of energy from a
naturally occurring byproduct of our landfills," Gov. Nixon said. "I commend
this innovative partnership for the benefits it will bring our economy,
environment and communities."

Republic Services, Inc. (NYSE: RSG) and Ameresco partnered to develop the
landfill gas-to-electricity project that uses a gas byproduct from the
Jefferson City Landfill. Landfill gas, which is created when organic material
naturally decomposes in a landfill, consists of about 50 percent methane. It
is a readily available, reliable local alternative energy source that offsets
the need for fossil fuels. The gas can be converted and used in many ways: to
generate electricity, heat or steam; or as an alternative vehicle fuel.

"This project is the ultimate in recycling," said Kevin Walbridge, senior vice
president Midwest Region, Republic Services. "We are continually researching,
developing and implementing innovative technologies to help conserve natural
resources."

Ameresco, the nation's largest independent energy services company, designed,
built, owns and operates the renewable energy project. First, Ameresco
constructed a 3-mile pipeline to carry the landfill gas from the landfill to
an engine facility located at the Jefferson City Correctional Center (JCCC).
The gas is used to generate 3.2 megawatts of electricity. The green power,
which is purchased by Columbia Water & Light, provides enough electricity to
meet the needs of nearly 2,000 Columbia Water & Light customers. It also
reduces green house gas emissions equivalent to planting 31,000 acres of trees
and removing almost 28,000 vehicles each year from Missouri roads.

"Projects like these create a domino effect through the economy because they
create jobs and require products and services." said Ameresco's CEO, George
Sakellaris. "The construction and operation of Ameresco's renewable energy
project in Jefferson City created and sustained about 80 jobs in Missouri and
across the nation."

Additionally, Ameresco captures the waste heat generated from the engines to
provide steam and hot water for the State-owned correctional center.
Greenhouse gas emissions reductions from using the waste heat to offset
natural gas in the boilers are equivalent to heating 1,500 homes, planting
1,300 acres of trees and removing almost 1,000 vehicles each year from
Missouri roads. Ameresco is also working with the correctional facility to
improve efficiency, reduce energy demand and costs, and to combine the Algoa
and Jefferson City Power Plants, reducing overall operations costs and saving
taxpayer money.

Landfill gas-to-energy projects are win-win opportunities for all parties
involved, whether they are the landfill owner/operators, the local utility,
the local government, or the surrounding community.

"For Columbia Water and Light and the City of Columbia, Missouri, purchasing
the power from this project helps us comply with the City's renewable
portfolio standard by providing 2% of our electric portfolio," said Darwin
Hindman, Mayor, Columbia, MO. "This project provides Columbia with a
consistent, clean, green source of energy."

"Northeast Energy Systems is pleased to supply GE Jenbacher technology to this
project to support Ameresco's landfill gas-to-electricity project at the
Jefferson City Landfill, and we look forward to working with these partners on
many other larger-scale landfill gas projects within the US," said Fred
Farrand, Vice President, Northeast Energy Systems.

The Jefferson City Landfill, which is owned and operated by Republic Service's
subsidiary, Allied Waste, opened in 1979 and is one of the main recipients of
refuse from residents and businesses in the area. The landfill covers 319
acres of land and employs eight area residents. The Jefferson City Landfill is
Republic's second gas-to-energy project in Missouri. The landfill gas project
is one of Republic Services' 76 alternative energy projects at its landfills
nationwide.

About Republic Services
Republic Services is a leading provider of solid waste collection, transfer,
recycling and disposal services. Allied Waste merged with Republic Services in
December 2008. The company provides trash collection services to commercial,
industrial, municipal and residential customers in 40 states and Puerto Rico
through its 400 collection companies. Republic Services owns or operates 242
transfer stations, 213 solid waste landfills and 78 recycling facilities. The
company is headquartered in Phoenix, Arizona and has 34,000 employees. For
more information, visit the Republic Services Web site at
www.republicservices.com.

About Ameresco
Ameresco is the largest independent energy service company in North America.
In addition to its expertise in developing landfill gas projects and other
renewable energy sources, Ameresco has two other energy service lines - energy
conservation and energy risk mitigation. The company has more than 550
employees in 50 regional offices throughout North America, and it has
constructed more than $4 billion in energy projects throughout the world.
Learn more at www.ameresco.com.

Additional Partners
State of Missouri Department of Corrections - http://www.doc.mo.gov/
Columbia Water & Light - http://www.gocolumbiamo.com/WaterandLight/
GE Jenbacher -
http://www.gepower.com/prod_serv/products/recip_engines/en/index.htm
Northeast Energy Systems - http://www.neesys.com/

SOURCE Ameresco; Republic Services

Brad Zimmerman, +1-573-690-9364, or Peg Mulloy, +1-480-627-2887, both of
Republic Services; or Jeanette Coleman-Hall, +1-508-661-2230, or Shelley
Cohen, +1-202-422-4488, both of Ameresco