| Business | Phone |
| Accs 1700 W Luthy Dr B, Peoria 61615 | (309) 566-5500 |
| Aem Inc 1917 W Altorfer Dr, Peoria 61615 | (309) 693-7936 |
| Aac Belcan 423 Sw Washington St, Peoria 61602 | (309) 674-4300 |
| Terra Engineering Ltd 401 Main St, Peoria 61602 | (309) 999-0123 |
| Strom Engineering 414 Hamilton Blvd, Peoria 61602 | (309) 676-0360 |
| Clark Engineers Inc 111 Ne Jefferson Ave, Peoria 61602 | (309) 676-8464 |
| So Deep Inc 2916 Alta Ln, Peoria 61615 | (309) 243-8447 |
| D L Markley & Assoc Inc 2104 W Moss Ave, Peoria 61604 | (309) 673-7511 |
| Dax Con Engineering Inc 5607 Washington St, Peoria 61607 | (309) 697-5975 |
| E Serv Llc 8200 N Allen Rd, Peoria 61615 | (309) 691-4920 |
| G E Co 2300 Ne Adams St, Peoria 61603 | (309) 686-4535 |
| Hanson Professional Svc Inc 2900 W Willow Knolls Dr, Peoria 61614 | (309) 691-0902 |
| Maurer-Stutz Inc 7615 N Harker Dr, Peoria 61615 | (309) 693-7615 |
| Mactec 8901 N Industrial Rd, Peoria 61615 | (309) 692-4422 |