C. For the fiscal year beginning July 1, 2005, $50 million shall be appropriated from the general fund and deposited into the Fund. Except as otherwise provided under this article, such appropriation and any amounts appropriated to the Fund in subsequent years in addition to any amounts deposited to the Fund pursuant to the provisions of subsection A shall be used solely to finance the costs of design and installation of nutrient removal technology at publicly owned treatment works designated as significant dischargers or eligible nonsignificant dischargers for compliance with the effluent limitations for total nitrogen and total phosphorus of the Chesapeake Bay TMDL Watershed Implementation Plan or applicable regulatory or permit requirements. Notwithstanding the provisions of this section, the Governor and General Assembly may, at any time, provide additional funding for nonpoint source pollution reduction activities through the Fund in excess of the deposit required under subsection A. At such time as grant agreements specified in § 10.1-2130 have been signed by every significant discharger and eligible nonsignificant discharger and available funds are sufficient to implement the provisions of such grant agreements, the House Committee on Agriculture, Chesapeake and Natural Resources, the House Committee on Appropriations, the Senate Committee on Agriculture, Conservation and Natural Resources, and the Senate Committee on Finance and Appropriations shall review the financial assistance provided under this section and determine (i) whether such deposits should continue to be made, (ii) the size of the deposit to be made, (iii) the programs and activities that should be financed by such deposits in the future, and (iv) whether the provisions of this section should be extended.