RVE is providing engineering services including preparing plans and specifications for the abandonment of existing distribution and transmission mains and the construction of new distribution and transmission mains, preparation of a feasibility study to identify potential alternative routes for two water main crossings of the Passaic River, coordinate a railroad crossing, obtain New Jersey Department of Environmental Protection (NJDEP) Land Use Regulation permits, preparation of utility easements and conduct soil investigations. The project consists of the replacement of an estimated 18,000 feet of distribution mains up to 12” diameter, the replacement of an estimated 8,000 feet of large diameter transmission mains up to 36” diameter, and the replacement of system valves, hydrants and service lines. In addition to the system improvements, Passaic Valley Water Commission (PVWC) added additional work to be designed in advance of the Levine Reservoir Improvements Project, including 48” double line stops; replacing a 48” concrete water main; two new 48” horizontal gate valves; two 36” Pressure Reducing Valves (PRVs) in vaults; 48” Venturi Meter Vault including instrumentation and controls; Wet Tap existing concrete main and installing a pressure relief valve and chamber; transferring the new water main to the tank outlet 48” concrete pipe; and installing a new 36” horizontal gate valve and adapters.
Due to soil and groundwater contamination issues in the area including the crossing of the Passaic River in two locations, the following pipe materials were required for the new water main: CLDIP, Steel, and Fusible PVC (FPVC).
The project included crossing the Passaic River in two locations utilizing Horizontal Directional Drilling (HDD) and crossing the NJ Transit rail line at one location. At the rail line crossing, jack and bore installation was required to replace an existing water main that had collapsed.
There was also a 10-inch unlined DIP water main under the rail line that was required to be structurally lined