Wastewater Projects

Lykens Township Act 537 Plan Update

This project involved a significant update of this rural, northern Dauphin County Township’s Act 537 Sewage Facilities Plan. Lykens Township had not completed an update of their plan since 1973. The Township does not currently have public facilities for wastewater collection or treatment, and does not anticipate significant development in the immediate future that would necessitate the construction of a public wastewater treatment plant. The new plan identifies areas of potential development as well as areas containing failing on-lot systems....

Gap Wastewater Treatment Plant & Collection System

This project involved the design of a 240,000 GPD wastewater treatment facility and collection system. The new plant supplemented an existing 100,000 GPD plant which could not be retrofitted for additional capacity, providing for additional/ future flows. The treatment plant utilizes an activated sludge process, ultraviolet disinfection and sludge storage. The municipal engineer was assisted in the design of approximately 8,000 feet of gravity sewer, including road crossing (bore/jack) details and specifications, connecting the new plant to...

Denton Hill State Park Wastewater Treatment Plant & Collection System

This project involved the design of a 13,000 GPD wastewater treatment plant to replace an out-of-date facility at Denton Hill State Park. Peak flows at the park, which is home to a downhill ski area, occur in the wintertime, so the treatment plant was designed to accommodate extremely low flow conditions during the off season. The package plant included SBR technology and a UV disinfection unit. The following services for the project: Development of treatment process needs. Concept treatment system design. Site design. Permit application for...

New Oxford Manor WWTP

Navarro & Wright Consulting Engineers, Inc. (N&W) performed a full range of engineering services for a retrofit and expansion of an existing wastewater treatment plant and gravity collection system which services 100 mobile home units and provided capacity for commercial lots to be developed. The collection system was susceptible to high Infiltration/Inflow and plant flows routinely exceeded its hydraulic capacity causing workouts and effluent violations. The plant was placed under a Consent Order by PA DEP and was required to be...

Bradford Estates Subdivision

When client Yingst Homes, Inc. needed assistance designing an internal roadway network for a subdivision they turned to Navarro & Wright to manage the task successfully.