• Install new 2-inch air release valves on each barrel in a new precast vault. • Install new 3-inch combination air valves in a new precast vault. • Recoat all exposed surfaces (pip, valves, supports, etc.) in the Broadway Valve Vault • Seal vault lids to mitigate inflow causing corrosive conditions. • Jack and bore realignment of existing pipe in steel casing crossing the Southern Avenue Interceptor (SAI) and Salt River Outfall (SRO) in Broadway Road. o Abandon existing pipe and casing. o Install new 24-inch DIP in a new steel casing. • Barrel No. 1 – Open cut pipe replacement in the same alignment as the existing pipe with 30-inch High-Density Polyethylene (HDPE) pipe. Replace all pipe from the Broadway Valve Vault to the new HDPE terminal pipe in Discharge Vault No. 1. • Barrel No. 2 – Open cut pipe replacement in the same alignment as the existing pipe with 30-inch HDPE pipe. Replace all pipe from the Broadway Valve Vault to the south limit of the jack and bore replacement under the SAI and SRO. • Barrel No. 3 – Provide fully redundant force main from Broadway Valve Vault to Broadway Road. o Pipe modifications in the valve vault to extend existing Barrel No. 3 with 24-inch DIP to the SRO. o Open cut replacement of existing 12-inch DIP with upsized 30-inch HDPE force main. o Replace existing discharge manhole with new discharge structure for outfall from Barrel No. 3 to the SRO.
