Alabama

McWane, Inc.
Birmingham, AL

Arizona

SRP
Phoenix, AZ

Arizona Public Service Company
Phoenix, AZ

Tucson Electric Power Company
Tucson, AZ

Southwestern Power Group II
Phoenix, AZ

Arizona Electric Power Cooperative, Inc.
Benson, AZ

Mesquite Power
Arlington, AZ

California

PG&E
San Francisco, CA

Bentley Prince Street
City of Industry, CA

EcoSecurities
Claremont, CA

City of Roseville, California
Roseville, CA

MotivEarth, LLC
San Diego, CA

The City of Long Beach
Long Beach, CA

TRC Solutions, Inc.
Irvine, CA

The Port of Los Angeles
San Pedro, CA

Enviance, Inc.
Mountain View, CA

EORM, Inc.
Sunnyvale, CA

Aquarium of the Pacific
Long Beach, CA

3Degrees
San Francisco, CA

Ecotek
Fountain Valley, CA

Mazzetti & Associates
San Francisco, CA

City of West Hollywood
West Hollywood, CA

Law Office of Jeremy D. Weinstein, P.C.
Walnut Creek, CA

Fresh and Easy Neighborhood Market
El Segundo, CA

Dublin San Ramon Services District
Pleasanton, CA

ENVIRON International Corporation
Novato, CA

West Basin Municipal Water District
Carson, CA

KEMA, Inc.
Oakland, CA

Nexant, Inc.
San Francisco, CA

West Coast Environmental and Engineering
San Francisco, CA

Shultz Steel
South Gate, CA

California Environmental Protection Agency
Sacramento, CA

Truckee Tahoe Airport District
Truckee, CA

Tetra Tech
Pasadena, CA

Sacramento Municipality Utility District
Sacramento, CA

United States Tile Company
Corona, CA

SCS Engineers
Sacramento, CA

Salinas Valley Memorial Healthcare System
Salinas, CA

Environmental Science Associates
Petaluma, CA

Red Bull North America
Santa Monica, CA

Hilmar Cheese Company
Hilmar, CA

Pacific Waste Consulting Group
Sacramento, CA

City and County of San Francisco, CA
San Francisco, CA

Marin Sanitary Services
San Rafael, CA

The Sacramento Metropolitan Air Quality Management District
Sacramento, CA

Edison International
Rosemead, CA

Sacramento Area Council of Governments
Sacramento, CA

Northern California Power Agency
Roseville, CA

EPS Corp
Costa Mesa, CA

Sonoma Country Water Agency
Santa Rosa, CA

Gills Onions, LLC
Ventura, CA

Central Contra Costa Sanitary District
Martinez, CA

California Climate Action Registry
Los Angeles, CA

Orange County Sanitation District
Fountain Valley, CA

Colorado

Symbiotic Engineering, LLC
Boulder, CO

Cameron-Cole, LLC
Boulder, CO

Kleinfelder, Inc.
Golden, CO

Platte River Power Authority
Fort Collins, CO

American Energy Assets
Denver, CO

Suncor Energy (USA) Inc.
Commerce City, CO

Hogan and Hartson – Colorado
Boulder, CO

Tri-State Generation and Transmission Association, Inc.
Denver, CO

Colorado Springs Utilities
Colorado Springs, CO

Colorado Interstate Gas
Colorado Springs, CO

El Paso Natural Gas Company
Colorado Springs, CO

State of Colorado
Denver, CO

Connecticut

Limousine Environmental Action Partnership
Newtown, CT

Delaware

The City of Wilmington
Wilmington, DE

Florida

Castle & Cook Florida, LTD
Winter Garden, FL

Carbon Solutions America, LLC
Boca Raton, FL

MGM International Group, LLC
Miami, FL

GEORGIA

Environmental Planning Specialists, Inc.
Atlanta, GA

Mirant Corporation
Atlanta, GA

Shaw Industries Inc.
Dalton, GA

Boral Bricks Inc.
Roswell, GA

Sterling Planet, Inc.
Norcross, GA

Boral Construction Materials
Roswell, GA

Hawaii

University of Hawai'i at Mānoa
Honolulu, HI

IDAHO

Idaho Department of Environmental Quality
Boise, ID

Illinois

S&C Electric Company
Chicago, IL

Indiana

Subaru of Indiana Automotive, Inc.
Lafayette, IN

IOWA

MidAmerican Energy Company
Davenport, IA

KANSAS

Westar Energy, Inc.
Topeka, KA

Kentucky

Summit Energy
Louisville, KY

Maryland

Maryland Department of the Environment
Baltimore, MD

Invitrogen Corporation
Frederick, MD

Massachusetts

National Grid
Waltham, MA

The Cadmus Group, Inc.
Watertown, MA

Massachusetts Department of Environmental Protection
Boston, MA

Groom Energy
Salem, MA

Michigan

Wolverine Power Cooperative
Cadillac, MI

Horizon Environmental Corporation
Detroit, MI

Ford Motor Company
Dearborn, MI

Minnesota

Appliance Recycling Centers of America
Minneapolis, MN

Great River Energy
Elk River, MN

Minnesota Pollution Control Agency
St. Paul, MN

Minnesota Metropolitan Council
St. Paul, MN

Xcel Energy
Minneapolis, MN

Saint Olaf College
Northfield, MN

Barr Engineering Company
Minneapolis, MN

Minnesota Power
Duluth, MN

The Weidt Group
Minnetonka, MN

DPRA, Incorporated
Saint Paul, MN

Minnesota Department of Natural Resources
Saint Paul, MN

Wenck Associates, Inc.
Maple Plain, MN

Missouri

St. Louis Zoo
St. Louis, MO

Missouri History Museum
St. Louis, MO

Missouri Botanical Garden
St. Louis, MO

Saint Louis Science Center
St. Louis, MO

Montana

Natural Capital, LLC
Bozeman, MT

Nebraska

M.E. Group, Inc.
Lincoln, NE

Northern Natural Gas
Omaha, NE

Nevada

Sierra Pacific Resources
Las Vegas, NV

Nevada Division of Environmental Protection
Carson City, NV

Newmont Nevada Energy Investment, LLC.
Battle Mountain, NV

Newmont Mining Corporation
, NV

New Jersey

First Environment
Boonton, NJ

Covanta Energy Corp.
Fairfield, NJ

Valmar & Associates, Inc.
Mendham, NJ

Johnson & Johnson
New Bruswick, NJ

New Mexico

Los Alamos National Lab
Los Alamos, NM

New York

Ecology and Environment, Inc.
Lancaster, NY

City of Syracuse, NY
Syracuse, NY

NYS Environmental Facilities Corporation
Albany, NY

The New York Power Authority
White Plains, NY

RiverWright LLC
Buffalo, NY

NYS Dept. of Environmental Conservation
Albany, NY

City of Rochester, NY
Rochester, NY

City of Oneonta, NY
Oneonta, NY

Consolidated Edison Company Of New York, Inc.
New York, NY

Juice Energy, Inc.
New York, NY

New York State Energy Research and Development Authority
Albany, NY

Syracuse University
Syracuse, NY

Malcolm Pirnie, Inc.
White Plains, NY

New York State Office of General Services
Albany, NY

Environmental Advocates of New York
Albany, NY

Dormitory Authority of the State of New York
Albany, NY

New York State Office of Parks, Recreation and Historic Preservation
Albany, NY

Cornell University
Ithaca, NY

Natural Resources Defense Council
New York, NY

New York State Metropolitan Transportation Authority
New York, NY

Eastman Kodak Company
Rochester, NY

NORTH CAROLINA

Cormetech, Inc.
Durham, NC

The North Carolina Department of Environment and Natural Resources
Raleigh, NC

Duke Energy Corporation
Charlotte, NC

Progress Energy
Raleigh, NC

DAK Americas LLC
Leland, NC

Saunders Thread Company
Gastonia, NC

CommScope, Inc.
Hickory, NC

Davidson College
Davidson, NC

Ohio

Cleveland-Cliffs Inc.
Cleveland, OH

Smart Papers Holdings LLC
Hamilton, OH

Cadence Network, Inc.
Cincinnati, OH

North Star BlueScope Steel
Delta, OH

Oklahoma

Terra Industries Inc.
Claremore, OK

Oregon

Tropical Salvage, Inc.
Portland, OR

PacifiCorp
Portland, OR

Earth Advantage, Inc.
Portland, OR

Ecos Consulting
Portland, OR

The Climate Trust
Portland, OR

Green Building Services
Portland, OR

West Linn Paper Company
West Linn, OR

Sokol Blosser Winery
Dundee, OR

Brightworks
Portland, OR

The Port of Portland
Portland, OR

Bonneville Power Administration
Portland, OR

Good Company
Eugene, OR

Ecotrust
Portland, OR

Pennsylvania

PPG Industries, Inc.
Allison Park, PA

The Pennsylvania Recycling Markets Center
Middletown, PA

South Carolina

The City of Greenville
Greenville, SC

Coastal Conservation League
Charleston, SC

South Carolina Department of Health & Environmental Control
Columbia, SC

S.C.P.S.A., Santee Cooper
Moncks Corner, SC

SCANA Corporation
Columbia, SC

Lexington Medical Center
West Columbia, SC

Texas

Alliant Environmental, LLC
Magnolia, TX

Shell Oil Company
Houston, TX

The City of Austin, Texas
Austin, TX

Element Markets, LLC
Houston, TX

Supply Chain Consulting US, LLC
Richardson, TX

Dean Foods Company
Dallas, TX

Anadarko Petroleum Corporation
The Woodlands, TX

Utah

ETC Group, LLC
Salt Lake City, UT

State of Utah Executive Branch
Salt Lake City, UT

Salt Lake City Corporation
Salt Lake City, UT

Kennecott Land Company
Murray, UT

SWCA Environmental Consultants
Salt Lake City, UT

Kennecott Utah Copper
Magna, UT

USANA Health Sciences
Salt Lake City, UT

Salt Lake County
Salt Lake City, UT

Environmental Performance Group
Salt Lake City, UT

Utah Transit Authority
Salt Lake City, UT

3form
Salt Lake City, UT

VERMONT

State of Vermont Agency of Natural Resources
Waterbury, VT

Vermont Technical College
Randolph Center, VT

NativeEnergy, Inc.
Charlotte, VT

Green Mountain Power Corporation
Colchester, VT

Spring Hill Solutions, LLC
Burlington, VT

Resource Systems Group Inc.
White River Junction, VT

Virginia

Science Applications International Corporation (SAIC)
McLean, VA

E. H. Pechan & Associates, Inc.
Springfield, VA

Noblis
Falls Church, VA

Washington

City of Seattle
Seattle, WA

Alcoa
Ferndale, WA

ShoreBank Pacific
Ilwaco, WA

Clark Public Utilities
Vancouver, WA

Sustainable Business Consulting
Seattle, WA

GHG Accountants, L.L.C.
Bothell, WA

Washington State Department of Ecology
Olympia, WA

Public Utility District No. 1 of Clallam County
Port Angeles, WA

Parametrix, Inc.
Bellevue, WA

Clark County, WA
Vancouver, WA

Port of Seattle
Seattle, WA

Longview Fibre Paper and Packaging, Inc.
Longview, WA

Washington State Department of Transportation
Olympia, WA

Seattle Steam Company
Seattle, WA

Washington, D.C.

The U.S. Postal Service
Washington D.C.

World Resources Institute
Washington D.C.

First Climate
Washington D.C.

Nuclear Energy Institute
Washington D.C.

American Public Transportation Association
Washington D.C.

Point Carbon North America, LLC
Washington D.C.

Wisconsin

Innovative Bio-Technologies, LLC
Stanley, WI

RMT, Inc.
Madison, WI

Madison Environmental Group, Inc.
Madison, WI

Northland College
Ashland, WI

Wyoming

Trihydro Corporation
Laramie, WY

Grand Targhee Resort
Alta, WY