This regulation applies to the following mechanical systems service contracts: Valued at more than $2,500; Procured by a public body as defined in State Finance and Procurement Article, §17-201(j), Annotated Code of Maryland; and Covering a mechanical system installed as part of a building or public work constructed under the Prevailing Wage Law for a contract bid on or after October 1, 2022. A contractor performing work on a mechanical systems service contract shall submit certified payroll records pursuant to Regulation .02 of this chapter only for the weeks that work was performed on the service contract.