News & Insights

  • 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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  • November 1, 2018
Hermitage aerial

Hermitage Annual Report

As part of their overall strategy to optimize operations, maintenance, and finances, and to fulfill requirements of a bond indenture, the Hermitage Municipal Authority retained RETTEW to prepare an annual...

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  • October 31, 2018
Biogas Piping

City of York Biogas Piping Repair and Improvements

The City of York operates a 26-mgd advanced wastewater treatment plant, providing service to the greater York region. As part of its sludge handling processes, the City employs anaerobic digestion...

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  • April 13, 2017

Pennsylvania Turnpike Commission Wastewater and Environmental Engineering Services

The Pennsylvania Turnpike Commission was looking for environmental engineering services for its facilities statewide, including 62 interchanges, 21 maintenance facilities, 17 service plazas, 8 police stations, 5 tunnels, and multiple...

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  • April 12, 2017

National Beef Multivac Machine Safety Modifications

A meat packaging facility wanted to modify their multivac sealing and packing machinery to allow for safe lock-out/tag-out (LO/TO) of any moving pieces of equipment while keeping the control system...

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