Completed Projects

This project involved assessing and developing design plans to stabilize several locations identified by YVSA where sewer line integrity is being threatened by stream erosion. The work includes assessing and surveying the sites, developing design plans, and permitting the work.

The purpose of this project is to correct asset deficiencies to reduce inflow and infiltration with its associated sanitary sewer overflows an to reduce backups. The correction of these asset deficiencies will not only reduce but will also address damages from flood events.

Equipment replacement project that twill address failing and insufficient oxidation ditch blowers by replacing them. The new blowers will save energy by being able to adjust to low oxygen demand situations. Energy reduction is estimated to be 27.5% based on the reduction in blower flow rate, an thus motor horsepower. The flow rate will be adjusted using VFD's to match the actual oxygen demand, as detected by dissolved oxygen DO sensors an controlled by SCADA.

A project to address the deficiencies of the Dutchman Creek PS which was constructed pre 1968. the pumps have failed several times recently and the 3" force main FM discharges in the 18" regional PS FM. Consequently the 3" FM is greatly affected by pressure fluctuations due to the much larger regional PS pumps. The proposed work consists of eliminating this station by constructing approximately 2,125 LF of 12" gravity sewer and 10 manholes from the Dutchman Creek PS to the regional PS. This project will reduce energy consumption by at least 20%.

This AIA grant Project was completed in 2020 with the completion of the review and analyses of all collected field data and videos, rehab/repair recommendations and prioritization, cost estimates. A report was submitted in April 2020.

The design has been completed an dapproved. This project was expected to go out for bid in April 2020. It includes the following:

• Rehabilitation of Fox Hall PS that includes replacement o fpumps, rails, piping, valves, an dadding a valve vault.
• Convert the PVH Hampton Inn suction lift stations to submersible pump stations.
• Elimiation of the Shore Street PS with 1670 LF of 8 Inch Gravity Sewer.
• Replace 100 LF of the Osborne Street PS 3" force Main.
• Repairs of equipment at the regional PS due to Settling.