NEW UPDATES!
OARs governing county retention were updated November 2025. Your Multnomah County Retention Series has been updated accordingly. Please make sure to double check - some series may have new retention periods.
Each series contains the following information:
- Series Title (Agency Series #)
- Description. (Legal Citations)
- Retention
Acquisitions Correspondence (L08-001)
Series documents communications received or sent which document routine actions concerning the acquisition of materials for the county library system. Records include letters sent and received, memoranda, notes, transmittals, acknowledgements, community affair notices, charity fund drive records, routine requests for information or publications, enclosures, and attachments. (OAR 166-150-0005(2))
Retention:
- Retain 2 years.
Requests For Materials (L08-003)
Documents patron requests that specific library materials be ordered. Requests show date, material requested, and other information needed to acquire materials.(OAR 166-150-0005(37))
Retention:
- Retain 2 years after last action.
Note: Recent increase due to new OAR.
Vouchers (L08-002)
Documents the purchase of all library materials for all branch libraries. Includes vouchers, invoices, correspondence, and related documentation concerning the purchase. Includes information on outstanding claims. Documentation is sent to Finance for final disposition. (OAR 166-150-0110(1))
Retention:
- Retain 3 years after annual audit report has been completed.