Three years ago, during an installer class conducted in cooperation with the California Onsite Wastewater Association, we discussed installation procedures for sewage tanks. We highlighted the importance of avoiding or recognizing when a tank may float to the surface. The class broke for lunch and when we reconvened, a participant asked if we had seen the tanks at the gas station on the corner that had come up through the asphalt. We had not – so we were soon taking a short class field trip. The photo accompanying this story shows what we found.
Gasoline in the tanks had been drained
