Maryland Code, State Finance and Procurement § 13-207

(b)(1) A procurement officer shall require a bidder or offeror to provide bid security on a procurement contract for construction if:

(2) The amount of bid security required for a procurement contract for construction shall be:

(c)(1) A procurement officer may require a bidder or offeror to provide bid security on a procurement contract for services, supplies, or construction related services if the price of the procurement contract is expected to exceed $50,000.

(2) A procurement officer shall require a bidder or offeror to provide bid security on a procurement contract for services, supplies, or construction related services if federal law or a condition of federal assistance requires the security.

(3) The amount of bid security required for a procurement contract for services, supplies, or construction related services shall be an amount determined by the procurement officer. If a bid or proposal states a rate but not a total price, the procurement officer shall determine the dollar amount of the bid security.

(1) a bond provided by a surety company authorized to do business in the State;

(2) cash; or

(3) another form of security allowed by regulation.