ORS § 294.048
When funds invested under ORS 294.035(3)(d) are required to meet current cash demands and when withdrawal or liquidation of such investments at the time would cause a loss because the investment would be withdrawn or liquidated prior to maturity, the custodial officer may, after receiving the approval of the governing body, borrow funds on short-term promissory notes that shall be secured by pledging or assigning the investments held under ORS 294.035(3)(d). The notes shall mature in not more than six months after date of issue. If a lender demands physical possession of the certificates of deposit or other evidence of an investment pledged or assigned under this section, the custodial officer shall deliver the certificate or other evidence to the lender.
ORS 294.048