This contract must be construed in accordance with the laws and regulations of Maryland and Montgomery County. Payment will be based on any invoice used in the Contractor's normal course of business.Construction Contract and Related Documents. Client shall reimburse Contractor for the following expenses that are attributable directly to work performed under this Agreement: . Subsequent payments will be based on the Contractor's actual production of accepted charge resolutions. Furnish necessary reports to the Contracting Officer; and. 9. Date of Contract: May 1, 2001.