Lewis S. Goodfriend & Associates is a diversified acoustical engineering consulting firm offering professional services in the fields of architectural acoustics; building acoustics; noise evaluation and abatement including environmental, industrial and transportation; HVAC, vibration analysis and expert witness testimony. The firm is registered as a Small Business Enterprise with the New Jersey Commerce & Economic Growth Commission.

With more than 65 years of experience in providing consulting engineering services for a wide range of projects and clients, our engineering staff effectively interfaces with professionals in all disciplines. Our extensive experience includes working with architects, planners, engineers and attorneys, both in the private sector and in government. The firm has worked closely with various industries for many years, having provided services for clients such as K. Hovnanian, Pfizer, Home Depot, Verizon, and Sunoco on a wide variety of projects.

Featured Project

PEI Power Cogeneration Plant

Client Name: Concord Engineering Group

Project Location:
Archibald, Pennsylvania


  • Baseline Sound Pressure Level Measurements
  • Detailed Acoustical Modeling
  • Noise Control Recommendations

Lewis S. Goodfriend & Associates completed an acoustical evaluation of the one of the nation's largest landfill gas to energy power plant in Archibald, PA. PEI Power Corporation, a subsidiary of Pennsylvania Enterprises, Inc. (PEI) has recently brought online two new Solar mercury 50 gas turbines, each capable of generating 4.6 MW of power. According to PEI, the new turbines expect to be able to generate enough electricity from landfill gas to power over 30,000 homes. LSG&A performed a detailed evaluation of the existing sound pressure levels along the sites property line and combined it with another evaluation of the total future sound pressure levels with the proposed power plant equipment. The results of the acoustical evaluation were compared to the local noise regulations and recommendations for noise control measures were prepared in order to meet the property line design goals.