Which proposed improvements will consist of grading, excavating, filling, curbing and paving of said parts of streets between the points described, which paving will be of Asphalt, Brick, Bitumas, Spokane Bitumas, Wood Block, Bittman on Concrete Base and Bituminous, or any other standard pavement, which may be adopted by the Mayor and Council; said pavement to be thirty (30) feet width, in the center of such street, fifteen feet on each side of the center line thereof; also there will be constructed, the necessary curb line curbing thereon, together with necessary storm sewers and sewerage ways, all of which shall be done in compliance with plans and specifications to be prepared by the Engineer and approved by the Mayor and Council of the City of Moscow, Idaho. 