| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| A & L GREAT LAKES LABORATORIES INC. | 3505 CONESTOGA DR | FORT WAYNE | IN | 46808 | (260) 483-4759 | (260) 483-5274 |
| CALUMET TESTING SVCS INC | 1945 N GRIFFITH BLVD | GRIFFITH | IN | 46319 | (219) 923-9800 | (219) 923-0990 |
| CARNOW CONIBEAR & ASSOC LTD | 600 W VAN BUREN, STE 500 | CHICAGO | IL | 60607 | (312) 762-2930 | (312) 782-5145 |
| CIVIL & ENVIRONMENTAL | 555 BUTTERFIELD RD, STE 300 | LOMBARD | IL | 60148 | (630) 963-6026 | (630) 963-6027 |
| DIVERSE CONSTRUCTION GROUP LLC | 9751 FALL RIDGE TRAIL | ST LOUIS | MO | 63127 | (314) 596-7213 | (314) 256-2902 |
| E4 CONTRACTOR INCORPORATED | 9036 OCONTO AVE | MORTON GROVE | IL | 60053 | (773) 716-5122 | (847) 410-7884 |
| EA ENGINEERING, SCIENCE AND | 231 SCHILLING CIRCLE | HUNT VALLEY | MA | 21031 | (410) 584-7000 | |
| ECOANALYSTS INC | 1420 S BLAINE ST, STE #14 | MOSCOW | ID | 83843 | (208) 882-2588 | (208) 882-2588 |
| ENVIROBIDNET.COM | 24123 PEACHLAND BLVD C-4 310 | PORT CHARLOTTE | FL | 33954 | (888) 888-0900 | |
| ENVIRONMENTAL CONSULTING GROUP INC | 105 S YORK RD, STE 250 | ELMHURST | IL | 60126 | (630) 607-0060 | (630) 607-0650 |
| ENVIRONMENTAL MONITORING AND | 509 N 3RD AVE | DES PLAINES | IL | 60016 | (847) 324-3304 | (847) 967-6735 |
| ENVIROSCIENCE INC | 5070 STOW RD | STOW | OH | 44224 | (330) 414-6552 | (330) 688-3858 |
| EUROFINS ENVIRONMENT TESTING | 301 ALPHA DR | PITTSBURGH | PA | 15238 | (412) 915-9132 | (412) 915-2468 |
| FISHER SCIENTIFIC COMPANY LLC | 4500 TURNBERRY DR | HANOVER PARK | IL | 60133 | (800) 766-700... | |
| GENTECH SCIENTIFIC INC | 23 MILL ST | ARCADE | NY | 14009 | (585) 492-1068 | (585) 492-0383 |
| GREAT LAKES ENVIRONMENTAL | 739 HASTINGS ST | TRAVERSE CITY | MI | 49686 | (231) 941-2230 | |
| PACE ANALYTICAL SERVICES INC | 870 E HIGGINS RD, STE 143 | SCHAUMBURG | IL | 60173 | (312) 350-0382 | (847) 995-1836 |
| PCB PIEZOTRONICS INC | 3425 WALDEN AVE | DEPEW | NY | 60693 | (716) 684-0001 | (716) 684-0987 |
| PRIME VENDOR INC | 4622 CEDAR AVE, BLDG 5, STE 123 | WILMINGTON | NC | 28403-6916 | (800) 746-9554 | (910) 726-1973 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |
| TEKLAB INC | 5445 HORSESHOE LAKE RD | COLLINSVILLE | IL | 62234 | (618) 344-1004 | (618) 344-1005 |
| WWDS LTD | 813 GREENLEE AV | WINNEBAGO | IL | 61088 | (815) 335-7726 | (815) 654-0038 |