A contractor shall be required to submit cost or pricing data if any adjustment in the contract price is desired. Adjustments in price resulting from the use of contract clauses shall be computed in one or more of the following means:
• By agreement on a fixed-price adjustment before commencement of the pertinent performance or as soon thereafter as practicable;
• By unit prices specified in the contract or subsequently agreed upon;
• By the cost attributable to the events or situations under such clauses with adjustment of profit or fee, all as specified in the contract or subsequently agreed upon;
• In such other manner as the contracting parties may mutually agree; or,
• In the absence of agreement by the parties, by unilateral determination by the Town of the reasonable costs allocable, either directly or indirectly, to the events or situations under such clauses as accounted for in accordance with generally accepted accounting principles, and adjustment of profit or fee, as appropriate, and subject to the provisions of legal and contractual remedies.