| Business | Phone |
| Loucks Mc Lagan 20 Thompson Ave E, St Paul 55118 | (651) 457-3645 |
| Advance Geotechnical St Paul 55102 | (651) 292-1030 |
| Kemper & Assoc Inc 721 Old Highway 8 Nw, St Paul 55112 | (651) 631-0351 |
| Lake & Land Surveying 1296 Hudson Rd, St Paul 55106 | (651) 776-6211 |