According to the information provided by the capital master plan office, on 8 June 2005, the contractor submitted a claim for additional compensation and requested an extension of the contract by eight months to complete the construction work.
根据基本建设总计划办公室提供的资料，承包商于2005年6月8日提出进一步索偿要求，并要求将合同延长八个月才能完成这项工程。