| Austin, TX |
Austin City Waste |
| Beaumont, TX |
Beaumont Transit |
| Commerce City, CO |
United Parcel Service |
| Concord, CA |
Mt. Diablo School District |
| Diamond Bar, CA |
South Coast Air Quality Managemnt District |
| Grove City, OH |
SWACO/FirmGreen |
| Folsom Cordova, CA |
Folsom Cordova School District |
| Fresno, CA |
United Parcel Service |
| Helsinki Finland |
Helsinki Transit |
| Hickam AFB, HI |
Hydraflx |
| Lancaster, CA |
So Cal Gas |
| Midland, TX |
Pinnacle CNG |
| Munich Germany |
M-Tech Gas |
| Oklahoma City, OK |
United Parcel Service |
| Pasadena, CA |
Dye-Dee Services |
| San Antonio, TX |
VIA Transit |
| San Jose U.S.D., CA |
San Jose Unified School District |
| San Jose Int'l Airport, CA |
San Jose International Airport |
| San Marcos, TX |
Texas State University |
| San Ramon, CA |
United Parcel Serivce |
| Santa Clara, CA |
Specialty Solid Waste |
| South Lake Tahoe, CA |
Tahoe Transporation District |
| Sterling City, TX |
Wagner & Brown |
| Thousand Oaks, CA |
City of Thousand Oaks |
| Visalia, CA |
Visalia Transit and Solid Waste |
| Visalia U.S.D., CA |
Visalia Unified School District |
| West Sacramento, CA |
United Parcel Service |
| Yolo County Transit, CA |
YOLO Transit |
