Virginia Public Procurement Act; use of best value contracting; construction and professional services. Authorizes any public body to procure construction on a best value procurement basis using a numerical scoring system consisting of the following: (i) technical solution, 30 percent; (ii) past performance, 30 percent, including (a) price history of cost overruns, (b) schedule history of on-time delivery, and (c) contractor performance ratings from the immediately preceding five-year period; and (iii) price, 40 percent. The Request for Proposal shall contain a notice to potential offerors that the procurement decision will be made on a best value procurement basis. The Request for Proposal shall describe