| Business | Phone |
| Linwood C Scott Jr Inc 3368 Style Ave, Laurel 20724 | (410) 664-4865 |
| Kci Technologies 14502 Greenview Dr # 100, Laurel 20708 | (301) 953-1821 |
| A D Engineering Inc 9533 Chaton Rd, Laurel 20723 | (410) 792-4222 |
| M S Engineers Inc Laurel 20707 | (301) 490-2530 |
| C & R Environmental Assoc 11220 Chaucers Ridge Ct, Laurel 20723 | (301) 776-6560 |
| Metcalf & Eddy Inc 14504 Greenview Dr # 400, Laurel 20708 | (301) 317-9600 |
| Modis 14401 Sweitzer Ln # 6, Laurel 20707 | (301) 369-0040 |
| Riley Associates Llc 11704 Clocktower Ln, Laurel 20708 | (301) 419-2225 |
| Surveys Inc 350 Main St, Laurel 20707 | (301) 776-0561 |