D.C. Mun. Regs. r. 27-2630
The firm shall be responsible for the professional quality, technical accuracy, and coordination of all services required under its contract. The firm shall be liable for costs to the District resulting from errors or deficiencies in designs furnished under its contract.
When modification of a construction contract is required because of an error or deficiency in the services provided under an architect-engineer contract, the contracting officer shall consider the extent to which the architect-engineer contractor may be liable.
If the contracting officer determines that the firm is liable, and the recoverable cost will exceed the administrative cost involved or collection is otherwise in the best interests of the District, the contracting officer shall initiate procedures to collect the amount due.
The contracting officer shall include in the contract file a written statement of the reasons for the decision whether to recover costs from the firm.
D.C. Mun. Regs. r. 27-2630