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Acoustical Analysis Report Griffith Energy Storage Project <br /> Table 5. Construction Equipment Noise Levels by Stage(dBA Lmax) <br /> Eq uipment <br /> USEPA Construction Noise <br /> Level <br /> Construction Stage Equipment Type Quantity Usa e Factor(%) i .: <br /> Site Clearing and Preparation Air Compressors 4 40 80 <br /> (Stage 1) Tractors/Loaders/Backhoes 2 40 80 <br /> Graders 2 40 85 <br /> Off-Highway Trucks 8 40 55 <br /> Rollers 2 20 85 <br /> Rubber Tired Dozers 2 40 85 <br /> Rubber Tired Loaders 2 40 80 <br /> Skid Steer Loaders 4 40 80 <br /> Trenchers 2 50 82 <br /> Dump Trucks 8 40 84 <br /> Generators 4 50 82 <br /> Energy Storage Enclosure and Air Compressors 4 40 80 <br /> Substation Installation Cranes 2 16 85 <br /> (Stage 2) <br /> Excavators 4 40 85 <br /> Generator Sets 4 50 82 <br /> Forklifts 2 50 85 <br /> Plate Compactors 2 20 80 <br /> Rollers 2 20 85 <br /> Tractors/Loaders/Backhoes 6 40 80 <br /> Pile Driver 1 20 95 <br /> Gen-Tie Line Foundation and Air Compressors 2 40 80 <br /> Tower Erection Cranes 2 16 85 <br /> (Stage 3) <br /> Forklifts 2 50 85 <br /> Generator Sets 2 50 82 <br /> Pumps 2 50 77 <br /> Welders 2 40 73 <br /> Gen-Tie Line Pulling and Forklifts 2 50 85 <br /> Stringing Generator Sets 2 50 82 <br /> (Stage 4) <br /> Tractors/Loaders/Backhoes 2 40 80 <br /> Testing and Commissioning Off Highway Trucks 3 40 55 <br /> (Stage 5) <br /> OTETRA TECH 9 August 2023 <br />