| Business | Phone |
| Ayala Boring Inc 10150 Poplar Ave, Fontana 92335 | (909) 350-8940 |
| Babco Construction Inc 10919 Almond Ave, Fontana 92337 | (909) 823-7700 |
| Golden State Utility Co 14567 Arrow Blvd, Fontana 92335 | (909) 574-0359 |
| Mkp Construction Inc 14638 Aliso Dr, Fontana 92337 | (909) 427-9600 |