D.C. Mun. Regs. tit. 19, r. 19-4361
The CCO shall require each contractor to obtain insurance for the risks to which the contractor and the Library are exposed, except when the contract specifically relieves the contractor of liability for loss of damage to Library property.
The CCO shall have the right to disapprove the purchase of any insurance coverage not in the best interests of the Library.
The CCO shall require insurance coverage from each contractor when the contractor shall have possession of or control of Library property or when conditions of the contract make it necessary for the protection of the Library.
When the CCO requires a contractor to provide insurance coverage, the policies shall contain an endorsement that any cancellation or material change in the coverage or terms and conditions of the coverage shall not be effective unless the insurer or the contractor gives 30 days prior written notice of the cancellation or change to the Library in the manner required by the CCO.
When the CCO requires or approves insurance to cover loss of or damage to Library property, the contractor shall provide this coverage either by acquiring separate insurance policies or including the existing policies coverage for these specific risks. The policies shall specifically include the Library and the District of Columbia government as additional insurers.
D.C. Mun. Regs. tit. 19, r. 19-4361