16 Pa.C.S. § 14962
(b) Collateral.—
(2) A county may elect to require that a depository pledge collateral in an account in the name of the county to collateralize deposits above the Federal Deposit Insurance Corporation insurance limit. These accounts may be in the custody of the depository's trust department or at a third-party financial institution. The arrangement with the depository may be governed by a written agreement, approved by the board of directors or loan committee of the depository, with approval reflected in the minutes of the board or committee, which are kept continuously as an official record of the depository. The agreement shall include all of the following if collateral is pledged instead of a Federal Home Loan Bank letter of credit: