There is hereby created in the state treasury a special, nonreverting fund to be known as the Capital Improvement Fund, hereafter referred to as “the Fund.” The Fund shall consist of those funds that may be so designated by the Board and any gifts, grants, and contributions from any person, foundation, or other legal entity. In addition, the Board may transfer to this Fund an amount equal to fifty percent or less of the revenue generated annually from the sales and use tax which has been deposited in the Game Protection Fund pursuant to subsection E of § 58.1-638. The income and principal in the Fund shall be used only for the purchase, construction, maintenance, or repair of capital assets of the Department. The Fund shall be established on the books of the Comptroller. All moneys received shall be paid into the state treasury and credited to the Fund. Interest earned on the moneys in the Fund shall remain in the Fund and be credited to the Fund. Any moneys remaining in the Fund, including interest thereon, at the end of each fiscal year shall not revert to the general fund but shall remain in the Fund, except as provided in subsection E of § 58.1-638.