News & Insights

  • April 13, 2026
Pine Hollow Pump Station Replacement

Pine Hollow Pump Station Replacement

As one of the three largest pump stations serving the City of Hermitage and surrounding areas, the Pine Hollow Pump Station needed to be replaced after a series of infrastructure...

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  • April 13, 2026
Borough of Tyrone Water Treatment

Borough of Tyrone Water Treatment Plant Filter Rehabilitation

RETTEW advanced design improvements to the Tyrone Water Treatment Plant by addressing the deteriorated condition of the filter vacuum tower and associated control structures. The existing system had reached the...

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  • April 13, 2026
Borough of Tyrone Headworks Design

Borough of Tyrone Headworks Design

RETTEW supported Tyrone Borough by advancing upgrades to its wastewater treatment plant’s headworks after identifying that improved screening would enhance downstream processes and overall plant performance. A previously completed feasibility...

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  • November 20, 2025
St Bernard Organics-to-Energy

St. Bernard Organics-to-Energy Facility

UGI Energy Services and Synthica Energy, LLC, jointly developed one of the nation’s most advanced anaerobic digestion facilities, which converts high-strength industrial and food waste into renewable natural gas (RNG)....

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  • April 19, 2022
Bluesphere Anaerobic Digestion

Bluesphere Anaerobic Digester Due Diligence

A private developer of renewable energy projects hired RETTEW to conduct a due diligence evaluation of a 400-ton-per-day food waste anaerobic digestion facility in Charlotte, North Carolina. The facility receives...

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  • April 19, 2022
Brewing Company Anaerobic Pretreatment

Brewing Company Anaerobic Pretreatment System Evaluation

The Sierra Nevada Brewing Company opened a 500,000-barrel-per-year facility, which includes an on-site industrial wastewater pretreatment plant. The pretreatment technology comprises an anaerobic sequencing batch reactor (ASBR) to remove solids...

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  • April 19, 2022
Anaerobic Digestion to Renewable

Anaerobic Digestion to Renewable Natural Gas Project Development

An energy client was looking to develop multiple renewable natural gas (RNG) projects to meet their corporate sustainability goal of reducing the carbon footprint of the natural gas grid through...

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  • April 19, 2022
Township of Delhi

Township of Delhi Anaerobic Digester Evaluation

The Township of Delhi operates a conventional wastewater treatment plant designed to treat 4 to 5 mgd. The facility currently treats an average of 2.5 mgd of wastewater. Waste solids...

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  • March 14, 2022

Highspire Borough Authority Biosolids Upgrade

The Highspire Borough Authority’s wastewater treatment plant is designed to treat up to 2 mgd of wastewater. The current treatment process includes primary screening and grit removal, grinding or commutation,...

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  • November 1, 2018
Highspire WWPT BNR Upgrades

Highspire Borough Authority Capital Improvement Plan

The Highspire Borough Authority retained RETTEW to prepare a capital improvement plan to assist in planning for the future needs of their operations. The plan called for reviewing the existing...

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