It is expressly agreed and understood that the Contractor is in all respects an Independent Contractor as to the work, notwithstanding that in certain respects the Contractor is bound to follow the direction of designated City Officials, and that the Contractor is in no respect an agent, servant, or employee of the City. The agreement specifies the work to be done by the Contractor, but the method to be employed to accomplish this work shall be the responsibility of the Contractor, unless otherwise provided in the contract.