Section 250-171-17 - BASE STATE RECORD KEEPING1. The Bureau must retain copies of all paper and electronic records submitted by registrants based in Maine. Such records shall include, but not be limited to, all UCR forms, correspondence, and payments.2. UCR records may be maintained by the Bureau on paper, microfilm, microfiche, or any other computerized or condensed record storage system.3. For UCR purposes such records must be maintained for a minimum period of three years and shall be made available upon the request of any participating state during the minimum retention period. The retention period for the state of Maine may equal or exceed the UCR retention period, but may not be less than the three year UCR retention period.29- 250 C.M.R. ch. 171, § 17