Under this item the Contractor shall replace, as directed, all bowlder pavements disturbed in prosecuting the work or the repaving of which is deemed . advisable to make the adjoining bowlder pavement conform to the grade of the new improvement. The subgrade, if disturbed, must be thoroughly consolidated. The work of repaving will correspond as closely as practicable to the requirements for Bowlder Paving. The price bid per square yard shall include all work and material necessary or incidental to the proper relaying of the bowlder pavement.