The Washington County Board of Supervisors will be meeting on Tuesday. Two closed sessions will be held, one beginning at 8:30 a.m. and the other after the regular meeting business. On the agenda is to review bids and award the contract for the 140th Street Grading Project. A personnel change request from the County Attorney, and the second reading of the proposed ordinance related to the special valuation of wind energy conversion property, as well as a resolution to waive the third reading of the same ordinance. The new business items will be discussed beginning at 9 a.m. with that portion of the meeting open to the public.