Section 22.51 - Loan closings(a) The Participating Lender must promptly close all STLP loans in accordance with the terms and conditions approved by DOT OSDBU in its Guarantee Agreement. The Participating Lender must report circumstances concerning any STLP loans not closed within a reasonable time period after DOT OSDBU approval.(b) The Participating Lender uses its own internal loan closing documents and must use standard banking practices and procedures to ensure proper execution of the debt and perfection of the collateral. The Participating Lender must forward copies of all executed closing documents and filings to DOT OSDBU within the time period specified in the cooperative agreement.