the Department exercised vast powers in administrative contracts arising from tenders to direct the execution of the contract and its control in different stages, and this authority is often recognized in the contract itself, and exercise management oversight authority to instruct the contractor even in the absence of an express provision in the contract stipulated that the authority find their basis in the concept of the public Department of 'good organizing Department enjoy
0 authority to modify the contract unilaterally and universally recognized amendment authority Management as a party to the contract characterize the private law contract management contract so that the latter can be amended only with the consent of the other party. the Department authority to impose sanctions on, when it does not perform the obligations stipulated in the contract as the delay in the execution, management may neglect if contracted serious obligations to dissolve the contract or even in the absence of error if annulment based on the requirements of the public interest and requirements as an individual decision or regulatory decision.