; and (iii) $50,673,000 is for Consolidation Activities: Provided , That consolidation projects result in reduced annual rent paid by the tenant agency: Provided further , That no consolidation project exceed $10,000,000 in costs: Provided further , That consolidation projects are approved by each of the committees specified in section 3307(a) of title 40, United States Code: Provided further , That preference is given to consolidation projects that achieve a utilization rate of 130 usable square feet or less per person for office space: Provided further , That the obligation of funds under this paragraph for consolidation activities may not be made until 10 days after a proposed spending plan and explanation for each project to be undertaken, including estimated savings, has been submitted to the Committees on Appropriations of the House of Representatives and the Senate: Provided, That funds made available in this or any previous Act in the Federal Buildings Fund for Repairs and Alterations shall, for prospectus projects, be limited to the amount identified for each project, except each project in this or any previous Act may be increased by an amount not to exceed 10 percent unless advance approval is obtained from the Committees on Appropriations of a greater amount: Provided further , That additional projects for which prospectuses have been fully approved may be funded under this category only if advance approval is obtained from the Committees on Appropriations: Provided further , That the amounts provided in this or any prior Act for Repairs and Alterations may be used to fund costs associated with implementing security improvements to buildings necessary to meet the minimum standards for security in accordance with current law and in compliance with the reprogramming guidelines of the appropriate Committees of the House and Senate: Provided further, That the difference between the funds appropriated and expended on any projects in this or any prior Act, under the heading Repairs and Alterations , may be