| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| ALS GROUP USA CORPORATION | 2655 PARK CENTER DR, SUITE A | SIMI VALLEY | CA | 93065 | (805) 526-7161 | |
| AQUA VITAE ENGINEERING LLC | 3400 W STONEGATE BLVD, STE #100-231 | ARLINGTON HEIGHTS | IL | 60005 | (847) 239-4512 | (847) 239-4512 |
| BBJ GROUP LLC | 140 S DEARBORN ST, STE 1520 | CHICAGO | IL | 60603 | (312) 644-8556 | (312) 644-8555 |
| BIDNET | 20A RAILROAD AVE | ALBANY | NY | 12205 | (800) 677-1997 | (518) 438-0599 |
| BROWN & CALDWELL ENGINEERING | 141 W JACKSON BLVD, STE #300A | CHICAGO | IL | 60604 | (708) 870-6168 | (312) 483-2101 |
| ENVIROBIDNET.COM | 24123 PEACHLAND BLVD C-4 310 | PORT CHARLOTTE | FL | 33954 | (888) 888-0900 | |
| ENVIRONMENTAL MONITORING AND | 509 N 3RD AVE | DES PLAINES | IL | 60016 | (847) 324-3304 | (847) 967-6735 |
| EUROFINS ENVIRONMENT TESTING NORTH | 2417 BOND ST | UNIVERSITY PARK | IL | 60484 | (708) 534-5200 | (708) 534-5211 |
| EVOQUA WATER TECHNOLOGIES LLC | 2650 TALLEVAST RD | SARASOTA | FL | 34243 | (800) 345-3982 | (941) 359-7985 |
| 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 | |
| GWO TRUCKING INC | 1035 W 111TH ST, UNIT 3 | CHICAGO | IL | 60643 | (708) 330-4425 | (708) 330-4423 |
| NORTH AMERICA PROCUREMENT COUNCIL | P O BOX 40445 | GRAND JUNCTION | CO | 81504 | (302) 450-1923 | (302) 450-1925 |
| PACE ANALYTICAL NATIONAL | 12065 LEBANON RD | MT JULIET | TN | 37122 | (615) 758-5858 | (615) 758-5859 |
| PRIME VENDOR INC | 4622 CEDAR AVE, BLDG 5, STE 123 | WILMINGTON | NC | 28403-6916 | (800) 746-9554 | (910) 726-1973 |
| PWXPRESS | 1900 COFFEEPORT RD | JACKSONVILLE | FL | 32208 | (408) 676-8941 | (408) 67608942 |
| SGS NAM | 5500 BUSINESS DR | WILMINGTON | NC | 28405 | (910) 350-1903 | (910) 350-1903 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |