A new lawsuit accuses two wildfire cleanup companies of intentionally digging up more soil than necessary to make extra money. Three Sonoma County residents who lost their homes in the 2017 firestorm filed the class action against Tetra Tech and AshBritt International, claiming the companies were paid by the ton of debris removed and over-excavated their properties to capitalize on a tragedy. The suit filed in federal court in Oakland is based on a civil provision of the RICO Act, designed to go after organized crime. In a statement, Florida-based AshBritt says it followed all contract requirements.