OAR 340-150-0520: Investigation Due to Off Site Impacts

When required by the department, an owner and permittee of an UST system must follow the procedures in OAR 340-150-0510 to determine if their UST system is the source of off site impacts. These impacts include, but are not limited to, the presence of a regulated substance (such as the presence of free product or vapors in soils, basements, sewer and utility lines and nearby surface and drinking waters) that has been observed by the department or brought to its attention by another person.