Franchise utilities are required to be placed beneath City water mains and services with 1' minimum vertical separation. Horizontal separation requires a 5' minimum behind fire hydrants and when paralleling City-owned utilities. There is a 10' minimum requirement when adjacent to power vaults. Contractor is required to be asbestos certified. Trench shoring is to meet minimum safety standards set by the State of Washington Department of Labor and Industries.
Sheets are to be pinned and cold mix placed on edges.
Area is to be kept clean at all times. Silt and Erosion Control shall meet the requirements of the RCDG 20E.90.10 code. Contractor is required to provide protection of the City storm drain system. Concrete trucks are required to use a designated washout area. Restoration shall meet the requirement of Standard Spec Chapter 3.