No delay or failure on the part of Lender or on the part of any holder of the Note in the exercise of any right, power or privilege granted under this Loan Agreement, or under any other Loan Document, or available at law or in equity, shall impair any such right, power or privilege or be construed as a waiver of any Event of Default or any acquiescence therein. No single or partial exercise of any such right, power or privilege shall preclude the further exercise of such right, power or privilege. No waiver shall be valid against Lender unless made in writing and signed by Lender, and then only to the extent expressly specified therein.