Anheuser-Bush, Inc.
Archdiocese of Boston
AstraZeneca
AT&T Wireless Services
Bay County Energy Systems, Inc.
Berklee College of Music
Biogen Idec
Boston Edison
Boston Garden Boston Housing Authority
Boston Public Schools
Brandeis University
Bridgeport Hospital
Bunker Hill Community College
Cheshire Medical Center
Central Maine Medical Center
Covanta
Eastman Gelatine Corporation
Emerson College
Enron Energy Services
Fidelity Investments
First Church of Christ Scientist
Fitchburg State College
Foxboro Company
General Electric Company
Great Northern Paper, Inc.
Groton School
Hardwick Knitted Fabrics, Inc.
Hollingsworth & Vose Company
Holy Family Hospital
Holyoke Mutual Insurance Company
Johnson & Wales University
Keefe Technical School
Keene State College
Lawrence General Hospital
Maine Medical
MA Department of Corrections

MA Department of Public Health
Malden Mills Industries, Inc.
Mary Hitchcock Memorial Hospital MA Bay Transportation Authority
Merrimac Paper Company, Inc.
Museum of Fine Arts
MA Institute of Technology
Nextel Communications
Sate of New Hampshire
NSTAR Electric & Gas Corporation
Natick Paperboard Corporation
Nations Energy
Northeastern University
Omnipoint Communications
OSRAM Sylvania
City of Portsmouth, NH
Proctor Academy
Providence College
Sancta Maria Hospital
Sanders/Lockheed Martin
Salem Hospital
Salem State College
Sithe Energies
Springfield College
Salem State College
Suncook Leathers, Inc.
Synagro Northeast
Tufts University
University of Maine
University of Massachusetts
University of New Hampshire
VoiceStream WirelessVeiloa
Vermont Yankee Nuclear Power
Wentworth Institute of Technology
Westfield State College
Wheelabrator Technologies
Yankee Energy Services Company