A Coquille business received a reminder from DEQ to pay careful attention to Oregon’s underground storage tank leak detection requirements. DEQ issued Ron’s Oil Company a $1,900 penalty for using the wrong type of leak detection method to monitor for leaks in one of four underground storage tanks the company owns and operates at 580 N. Central Blvd. in Coquille, Ore. The tank contained a mixture of gasoline and diesel. The guage Ron’s Oil used was not approved for fuel mixtures.