OAR 340-228-0635: Utility Mercury Rule: Recordkeeping

The owner or operator of any coal-fired electric utility steam generating unit must maintain a file of all measurements, data, reports, and other information required in OAR 340-228-0606, 0609, 0637 and 0639 and 40 CFR part 63 subpart UUUUU at the source in a form suitable for inspection for at least 5 years from the date of each record.