PSEG West Orange Switching Substation West Orange NJ6524

Acoustical Evaluation of Station Upgrades PSE&G West Orange Switching Station, West Orange, NJ 5 June 2024 Page 1 SUMMARY PSE&G proposes to modify equipment and systems at the West Orange Switching Station in West Orange, NJ to modernize the site. The site is within a mixed-use area of the township, but there are some residential uses in the vicinity. Analyses show that steady site sound emissions currently comply with applicable code limits at nearby noise-sensitive receptors. When the site upgrades are complete, steady sound emissions will remain the same at noise-sensitive receptors and continue to be below noise code limits. There is also no negative acoustical impact anticipated from this project. INTRODUCTION Ostergaard Acoustical Associates (OAA) carried out a variety of tasks in order to assist PSE&G with analysis of sound emitted by transformers and other steady noise sources at the West Orange Switching Station. Tasks included surveying and computer-based modeling of existing equipment and associated sound emissions, as well as modeling of future sound emissions with proposed improvements. Sound emissions are required to meet noise limits per State and local regulations. This report provides the results of these evaluations. Tasks for OAA were overseen by Michael Conaway, P.E., with assistance from OAA staff. The PSE&G representative coordinating this work is Eric Sudman, P.E. Our assessment of existing sound emissions relies upon in-situ surveys of noise emitted by various on-site equipment. Predictions of future conditions rely upon manufacturers’ sound ratings provided by PSE&G, as well as experience at other sites. Present and future steady sound emissions were evaluated using acoustical modeling software to conveniently sum sound emissions and graphically present the results. Note that all acoustical modeling for this professional acoustical evaluation relied on analyses in octave frequency bands. However, in the interest of providing a concise report of findings, the results are provided using the most common metric of environmental sound, the A-weighted sound level. Full acoustical data in octave bands for all measurements and modeling are available upon request; these octave band data are consistent with the findings presented within this report.