The contracting officer shall obtain wage determinations for the following service contracts:

1. (a) Each new solicitation and contract in excess of $2,500.

2. (b) Each contract modification which brings the contract above $2,500 and-

   1. (1) Extends the existing contract pursuant to an option clause or otherwise; or

   2. (2) Changes the scope of the contract whereby labor requirements are affected significantly.

3. (c) Each multiple year contract in excess of $2,500 upon-

   1. (1) Annual anniversary date if the contract is subject to annual appropriations; or

   2. (2) Biennial anniversary date if the contract is not subject to annual appropriations and its proposed term exceeds 2 years-unless otherwise advised by the Wage and Hour Division.