Any individual employed on June 30, 2010, as a regional emergency medical services coordinator or as an assistant regional emergency medical services coordinator shall be offered an unclassified durational position within the Department of Public Health for the period from July 1, 2010, to June 30, 2011, inclusive, provided no more than five unclassified durational positions shall be created. Within available appropriations, such unclassified durational positions may be extended beyond June 30, 2011. The Commissioner of Administrative Services shall establish job classifications and salaries for such positions in accordance with the provisions of § 4-40. Any such created positions shall be exempt from collective bargaining requirements and no individual appointed to such position shall have reemployment or any other rights that may have been extended to unclassified employees under a State Employees’ Bargaining Agent Coalition agreement. Individuals employed in such unclassified durational positions shall be located at the offices of the Department of Public Health. In no event shall an individual employed in an unclassified durational position pursuant to this section receive credit for any purpose for services performed prior to July 1, 2010.