Section 15-220 - Appeal from unit's decision - In general(a) Except for a contract claim related to a lease for real property, a bidder or offeror, a prospective bidder or offeror, a unit, or a contractor may appeal the final action of a unit to the Appeals Board.(b) An appeal under this section shall be filed:(1) for a protest, within 10 days after receipt of the notice of a final action; and(2) for a contract claim, within 30 days after receipt of the notice of a final action.