There is no indication of the depth to the groundwater in your original report. In addition, for an expansive clay, it is better to have the water content at least three to five percent over the optimum water content. If the distress in the footings is from swelling, then the fill may have...
All the suggestions provided are valid. You need to do a site specific geotechnical investigation with at least one boring to a minimum depth of 50 feet below the ground surface. The most significant thing to notice is depth to groundwater. A liquifaction analysis should be done to determine...
