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Table 1 <br /> Unmitigated Processing Area Equipment Noise Levels <br /> DeSilva Gates Quarry Project - San Joaquin County <br /> _ Main <br /> Asphalt Concrete Recycle Processing Load-out Combined Standard <br /> Day/Night <br /> Reference Level 84 84 84 84 81 91 N/A <br /> at 50 ft. <br /> Receiver Predicted Leq at Nearest Receiver Locations <br /> N1 52 51 50 51 48 58 60/57 <br /> N2 52 51 50 51 48 58 60/57 <br /> N3 41 52 51 52 50 59 60/57 <br /> N5 58 56 54 56 53 62 60/57 <br /> N6 50 51 50 50 47 57 60/57 <br /> N7 51 52 52 51 48 58 60/57 <br /> N8 49 50 51 50 47 56 60/57 <br /> W1 39 39 39 40 36 46 50/45 <br /> W2 38 38 38 39 35 45 50/45 <br /> W3 39 39 39 40 36 46 50/45 <br /> E1 41 41 42 42 39 48 50/45 <br /> Notes: <br /> 1. Reference levels obtained from Table 3.J-6 of ADEIR <br /> 2. Distance from noise sources to receivers was scaled from project site plans and aerial photographs. <br /> 3. Levels were projected using 6 dB decrease per doubling of distance from reference location with additional <br /> -1.5 dB attenuation for atmospheric absorption and excess ground attenuation. <br /> 4. Noise standards for residences north of SR 132 are higher than those further south due to elevated <br /> ambient conditions north of SR 132. Please see discussion under standards of significance. <br /> 5. These predicted levels include an additional-5 dB offset at receivers W1-W3 and Et to account for the <br /> noise reduction which will be provided by the proposed earthen berms and/or existing canal embankment. <br /> 6. Numbers marked as bold/underline represent exceedances of the day and/or nighttime standards <br /> established for this project. <br /> Page -3- <br />