| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| BIDNET | 20A RAILROAD AVE | ALBANY | NY | 12205 | (800) 677-1997 | (518) 438-0599 |
| CHICAGOLAND | PO BOX 3533 | PEORIA | IL | 61612 | (309) 401-6167 | (309) 401-6168 |
| CONSTRUCT CONNECT | 30 TECHNOLOGY PKWY S, STE 100 | NORCROSS | GA | 30092 | (800) 364-2059 | (866) 570-8187 |
| DATABID | 433 PENN ST | NEWTOWN | PA | 18940 | (888) 929-3282 | (888) 929-9293 |
| ENVIROBIDNET.COM | 24123 PEACHLAND BLVD C-4 310 | PORT CHARLOTTE | FL | 33954 | (888) 888-0900 | |
| EPLAN ONLINE PLANROOM | 1400 FORUM BLVD, STE 7B | COLUMBIA | IL | 65203 | (573) 447-7130 | (573) 355-5405 |
| INVEST SHEPHERDS LLC | 1305 S MICHIGAN AVE, UNIT 1303 | CHICAGO | IL | 60605 | (312) 619-0363 | (312) 619-0363 |
| JOHN BURNS CONSTRUCTION COMPANY | 999 OAKMONT PLAZA DR, STE 400 | WESTMONT | IL | 60559 | (312) 550-6067 | |
| M & J UNDERGROUND INC. | 26603 GOVERNORS HWY | MONEE | IL | 60449 | (708) 534-6434 | (708) 534-6521 |
| MILHOUSE ENGINEERING & | 333 S WABASH AVE, STE 2901 | CHICAGO | IL | 60604 | (773) 661-8437 | (630) 519-4527 |
| MULTISYSTEM MANAGEMENT CO | 6019 N MILWAUKEE AVE | CHICAGO | IL | 60646 | (773) 775-7015 | (773) 775-7037 |
| NATIONAL POWER RODDING CORPORATION | 2500 W ARTHINGTON ST | CHICAGO | IL | 60612-4108 | (312) 666-7700 | (312) 666-5810 |
| NORTH AMERICA PROCUREMENT COUNCIL | P O BOX 40445 | GRAND JUNCTION | CO | 81504 | (302) 450-1923 | (302) 450-1925 |
| PIPETEK INFRASTRUCTURE SERVICES | 15155 FOGG ST | PLYMOUTH | MI | 48170 | (248) 519-3054 | (734) 921-3054 |
| PRIME VENDOR INC | 4622 CEDAR AVE, BLDG 5, STE 123 | WILMINGTON | NC | 28403-6916 | (800) 746-9554 | (910) 726-1973 |
| PROFESSIONAL ENVIRONMENTAL | 2665 SCOTT AVE, SUITE B | SAINT LOUIS | MO | 63103 | (314) 531-0060 | (314) 531-0068 |
| REPUBLIC SERVICES | 808 S JOLIET ST | JOLIET | IL | 60436 | (815) 774-3969 | (480) 718-4100 |
| SHERIDAN PLUMBING & SEWER INC | 6754 W 74TH ST | BEDFORD PARK | IL | 60638 | (708) 475-7100 | (708) 475-7138 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |
| SQN ASSOCIATES, LLC | 134 N LASALLE ST, STE 700 | CHICAGO | IL | 60602 | (312) 625-9500 | (312) 254-3157 |
| STRENGTH H20 LLC | 8458 HOLLY DR | CANTON | MI | 48183 | (734) 999-0444 | (734) 999-0444 |
| TIERRA ENVIRONMENTAL SVCS INC | 3821 INDIANAPOLIS BLVD | EAST CHICAGO | IN | 46312 | (219) 398-4000 | (219) 398-5000 |