Prior to the excavation, the Contractor shall have on-site all necessary signs, barricades, flags, and/or flagmen to provide for the safe flow of traffic. Any necessary detours or bypasses shall be signed and set up in advance. Where the excavation falls within a County or State Highway, those agencies shall be notified by the Contractor and all other necessary permits shall be obtained prior to excavation.
The size of the excavation may vary depending upon the depth of the trench and the nature of the material encountered. The size of the excavation shall also be kept at a minimum to prevent excess destruction of the existing street or highway.
The surface of the street shall be carefully sawed or jack-hammered as to provide a rectangular excavation. Care shall be exercised as not to damage any existing facilities. Any damages shall be repaired and the cost shall be born by the Contractor.
All excavated material shall be piled in a manner that will not endanger the work and will avoid obstructing sidewalks, driveways, and fire hydrants, and will not cover lawns. Gutters shall be kept clear or other satisfactory provisions made for street drainage at all times. If necessary to prevent the disturbing or settlement of adjacent road surfaces, foundation, structures, utility lines, or railroad trenches, the Contractor shall furnish and place all sheeting and bracing as necessary for good working conditions acceptable to the City.
Any damage to adjacent structures or property caused by settlement, water, or earth pressure, slides, caves, or other causes due to failure or lack of sheeting and bracing shall be repaired by the Contractor without delay at his expense.