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Acoustical Analysis Report Griffith Energy Storage Project <br /> Table of Contents <br /> 1.0 OVERVI EW................................................................................................................... 1 <br /> 1.1 Project Setting.......................................................................................................................... 1 <br /> 1.2 Acoustical Metrics and Terminology........................................................................................ 1 <br /> 1.3 Vibration Metrics and Terminology..........................................................................................4 <br /> 1.4 Noise Sensitive Receptors........................................................................................................5 <br /> 2.0 NOI SE AND VI BRATI ON LEVEL REQUI REMENTS AND GUI DELI NES...................................... 6 <br /> 2.1 California Environmental Quality Act...................................................................................... 6 <br /> 2.2 San Joaquin County Ordinance Code...................................................................................... 6 <br /> 2.3 San Joaquin County General Plan ........................................................................................... 6 <br /> 2.4 Alameda County Ordinance..................................................................................................... 6 <br /> 2.5 Alameda County General Plan and East County Area Plan Noise Element............................7 <br /> 3.0 EXISTINGSOUNDENVIRONMENT................................................................................... 7 <br /> 4.0 PROJECT CONSTRUCTION............................................................................................. 8 <br /> 4.1 Noise Calculation Methodology............................................................................................... 8 <br /> 4.2 Projected Noise Levels During Construction...........................................................................8 <br /> 4.3 Construction Best Practice Design Measures........................................................................ 11 <br /> 5.0 VIBRATION CALCULATION METHODOLOGY....................................................................12 <br /> 5.1 Projected Vibration Levels During Construction................................................................... 12 <br /> 6.0 OPERATIONAL NOISE...................................................................................................13 <br /> 6.1 Noise Prediction Model .......................................................................................................... 13 <br /> 6.2 Input to the Noise Prediction Model...................................................................................... 14 <br /> 6.3 Results of the Noise Prediction Model................................................................................... 16 <br /> 6.3.1 Mitigated Noise Model Results.................................................................................. 16 <br /> 7.0 CONCLUSION..............................................................................................................20 <br /> 8.0 REFERENCES..............................................................................................................21 <br /> List of Tables <br /> Table 1. Sound Pressure Levels and Relative Loudness of Noise Sources and Acoustic <br /> Environments........................................................................................................................3 <br /> Table 2. Acoustic Terms and Definitions............................................................................................3 <br /> Table 3. Typical Levels of Ground-Borne Vibration ...........................................................................4 <br /> Table4. NSA Summary........................................................................................................................5 <br /> OTETRA TECH i August 2023 <br />