ChaconCo built a gas station with underground tanks and put them in service on January 1, 2019, at a cost of $ 570 comma 000. The company estimates that the fuel tanks will have a useful life of 10 years and that the fair value of the costs to remove the fuel tanks will be $ 70 comma 000 at the end of 10 years. Further, the company assumes a 10 % discount rate and depreciates the fuel tanks using the straight-line method with no residual value. In the tenth year, ChaconCo closes the gas station, incurring environmental remediation costs of $ 73 comma 000