The Phoenix chapter of the Association of Environmental and Engineering Geologists (AEG) has set up a web listing of companies who work on subsidence and earth fissure projects in Arizona.
Section president Ken Fergason set up the list at my request so we can refer people who are looking for experts to help them. We urge anyone hiring a consulting engineer or geologist to verify that they are licensed to practice in Arizona (through the AZ Board of Technical Registration) and to inquire about their expertise in subsidence, earth fissures, or similar hazards like problem soils.