| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| BIDNET | 20A RAILROAD AVE | ALBANY | NY | 12205 | (800) 677-1997 | (518) 438-0599 |
| BSA ENVIRONMENTAL SERVICES INC | 23400 MERCANTILE RD, SUITE 8 | BEACHWOOD | OH | 44122 | (216) 765-0582 | (216) 765-0583 |
| ECOANALYSTS INC | 1420 S BLAINE ST, STE 14 | MOSCOW | ID | 83843-3973 | (208) 882-2588 | (208) 883-4288 |
| ENVIROBIDNET.COM | 24123 PEACHLAND BLVD C-4 310 | PORT CHARLOTTE | FL | 33954 | (888) 888-0900 | |
| EUROFINS ENVIRONMENT TESTING NORTH | 2417 BOND ST | UNIVERSITY PARK | IL | 60484 | (708) 534-5200 | (708) 534-5211 |
| FEHR GRAHAM | 200 WOODLAWN AVE | AURORA | IL | 60506 | (630) 897-4651 | (630) 897-5651 |
| GASKILL & WALTON CONSTRUCTION CO | P.O. BOX 367 | CHICAGO HEIGHTS | IL | 60412 | (708) 758-1050 | (999) 999-9999 |
| GEOSYNTEC CONSULTANTS | 1420 KENSINGTON RD | OAK BROOK | IL | 60523 | (630) 203-3342 | (630) 203-3341 |
| GRACE ANALYTICAL LAB INC | 5300 MCDERMOTT DR, SUITES A-B | BERKELEY | IL | 60163 | (708) 449-9449 | (312) 724-9011 |
| GREAT LAKES ENVIRONMENTAL | 739 HASTINGS ST | TRAVERSE CITY | MI | 49686 | (231) 941-2230 | |
| LIMNOPRO AQUATIC SCIENCE INC | PO BOX 721 | ST CLOUD | MN | 56302 | (320) 342-2210 | (320) 342-2210 |
| NEW CITY DEVELOPMENT INC | 9824 S GENOA AVE | CHICAGO | IL | 60643-1537 | (312) 509-1340 | (999) 999-9999 |
| NORTH AMERICA PROCUREMENT COUNCIL | P O BOX 40445 | GRAND JUNCTION | CO | 81504 | (302) 450-1923 | (302) 450-1925 |
| OTT HYDROMET CORP | 22400 DAVIS DR | STERLING | VA | 20164 | (703) 406-2800 | (703) 406-2801 |
| PCB PIEZOTRONICS INC | 3425 WALDEN AVE | DEPEW | NY | 60693 | (716) 684-0001 | (716) 684-0987 |
| PINPOINT PRECISION LLC | 1016 W JACKSON BLVD | CHICAGO | IL | 60607 | (312) 407-6346 | (312) 407-6352 |
| 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 |
| R-4 SERVICES LLC | 1301 W 35TH ST | CHICAGO | IL | 60609 | (773) 843-3907 | (773) 843-3910 |
| RHITHRON ASSOCIATES | 33 FORT MISSOULA | MISSOULA | MT | 59804 | (406) 721-1977 | (406) 531-2382 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |
| STANTEC CONSULTING SERVICES INC | 6605 W STEGER RD | MONEE | IL | 60449 | (708) 627-8018 | (999) 999-9999 |
| WARMUP INC NORTH AMERICA DIVISION | 25 FRANCIS J CLARKE CIRCLE, STE A | BETHEL | CT | 06801 | (262) 233-1590 | |