APPENDIX C: Operational Noise Level Estimates
Appendix C
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7-Eleven Project (With 12 Fuel Pumps and 991 Square Foot Automated Car Wash) 23 East Rider Street, Perris, CA
Appendix C: On-Site Operational Noise Level Estimates Prepared by: MIG, Inc.
September 2020
Contents:
Sheet 1 Reference Noise Level Information Sheet 2 On-Site Noise Level Estimates
Sheet 3 Preliminary Barrier Insertion Loss Estimates
7-Eleven Project (With 12 Fuel Pumps and 991 Square Foot Automated Car Wash) 23 East Rider Street, Perris, CA
Appendix C: On-Site Operational Noise Level Estimates Prepared by MIG, Inc. September 2020
Sheet 1: Reference Noise Level Information Table 1: Reference Noise Level Information
Noise Source Reference dBA
@ 3 Feet Duration
(Seconds) Estimated Hourly Leq @ 3 Feet On-site Automobile Trip
Low speed travel (15 mph)/parking 55 60 37.2
Door closing 95 1 59.4
Engine start/rev 95 5 66.4
Total Combined Noise Level 67.2
On-Site Truck Trip
Low speed travel (15 mph) 90 60 72.2
UST maneuvering(with backup alarm) 100 60 82.2
Air brake release 100 3 69.2
Main engine idling 80 900 74.0
Door closing 95 1 59.4
Engine start/rev 100 10 74.4
Total Combined Noise Level 83.9
HVAC Unit
Operation (3 Ton) 76 1,200 71.2
Vacuum
Operation 86 600 78.2
Car Wash
Max Operation (with Drying Cycle) 96.5 720 89.5
Typical Operation (Wash Cycle) 81.5 2,880 80.5
Total Combined Noise Level 90.0
7-Eleven Project (With 12 Fuel Pumps and 991 Square Foot Automated Car Wash) 23 East Rider Street, Perris, CA
Appendix C: On-Site Operational Noise Level Estimates Prepared by MIG, Inc. September 2020
Sheet 2: On-Site Noise Level Estimates
Table 1: Summary of Noise Levels at Property Lines
Property Line (Receptor) Combined Noise
Level Difference
Table 2: Summary of Noise Levels at North Property Line (R1)
Distance Hourly Leq dBA Distance Hourly Leq dBA No. Sources Hourly Leq dBA
On-Site Vehicle Trip (A1) 3 37.2 70 9.9 64 27.9
On-Site Vehicle Trip (A2) 3 37.2 133 4.3 20 17.3
On-Site Vehicle Trip (A3) 3 37.2
On-Site Vehicle Trip (A4) 3 37.2 164 2.5 54 19.8
On-Site Vehicle Trip (A5) 3 37.2 138 4.0 54 21.3
Vehicle Parking (P1) 3 67.2 88 37.9 6 45.7
Vehicle Parking (P2) 3 67.2
Vehicle Parking (P3) 3 67.2
Vehicle Parking (P4) 3 67.2
Vehicle Parking (P5) 3 67.2 135 34.2 9 43.7
Fuel Truck Delivery (T1) 3 83.9 80 55.4 1 55.4
HVAC Unit (H1) 3 71.2 134 28.2 4 34.2
Vacuum (V1) 3 78.2
Vacuum (V2) 3 78.2 245 40.0 1 40.0
Car Wash Entrance (W1) 3 90.0
Car Wash Exit (W2) 3 90.0 257 51.4 1 51.4
66.066.0
66.075.0
55.4
Source does not substantially contribute to noise levels at this location.
On-Site Noise Source Reference Noise Data North Property Line
(Single Source) North Property Line (Multiple Sources)
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Existing Ambient
7-Eleven Project (With 12 Fuel Pumps and 991 Square Foot Automated Car Wash) 23 East Rider Street, Perris, CA
Appendix C: On-Site Operational Noise Level Estimates Prepared by MIG, Inc. September 2020
Sheet 2: On-Site Noise Level Estimates
Table 3: Summary of Noise Levels at East Property Line (R2)
Distance Hourly Leq dBA Distance Hourly Leq dBA No. Sources Hourly Leq dBA
On-Site Vehicle Trip (A1) 3 37.2 94 7.3 64 25.4
On-Site Vehicle Trip (A2) 3 37.2 84 8.3 20 21.3
On-Site Vehicle Trip (A3) 3 37.2 On-Site Vehicle Trip (A4) 3 37.2 On-Site Vehicle Trip (A5) 3 37.2
Vehicle Parking (P1) 3 67.2 100 36.8 6 44.5
Vehicle Parking (P2) 3 67.2 94 37.3 8 46.3
Vehicle Parking (P3) 3 67.2 204 30.6 8 39.6
Vehicle Parking (P4) 3 67.2
Vehicle Parking (P5) 3 67.2
Fuel Truck Delivery (T1) 3 83.9 202 47.3 1 47.3
HVAC Unit (H1) 3 71.2 125 28.8 4 34.9
Vacuum (V1) 3 78.2 218 41.0 1 41.0
Vacuum (V2) 3 78.2 223 40.8 1 40.8
Car Wash Entrance (W1) 3 90.0 221 52.7 1 52.7
Car Wash Exit (W2) 3 90.0
Table 4: Summary of Noise Levels at East Property Line (R3)
Distance Hourly Leq dBA Distance Hourly Leq dBA No. Sources Hourly Leq dBA
On-Site Vehicle Trip (A1) 3 37.2 128 4.6 64 22.7
On-Site Vehicle Trip (A2) 3 37.2 36 15.6 20 28.6
On-Site Vehicle Trip (A3) 3 37.2 On-Site Vehicle Trip (A4) 3 37.2 On-Site Vehicle Trip (A5) 3 37.2
Vehicle Parking (P1) 3 67.2 114 35.6 6 43.4
Vehicle Parking (P2) 3 67.2 58 41.5 8 50.5
Vehicle Parking (P3) 3 67.2 144 33.6 8 42.6
Vehicle Parking (P4) 3 67.2 118 35.3 4 41.3
Vehicle Parking (P5) 3 67.2
Fuel Truck Delivery (T1) 3 83.9
HVAC Unit (H1) 3 71.2 104 30.4 4 36.5
Vacuum (V1) 3 78.2 159 43.7 1 43.7
Vacuum (V2) 3 78.2 165 43.4 1 43.4
East Property Line (Multiple Sources)
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
On-Site Noise Source
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
7-Eleven Project (With 12 Fuel Pumps and 991 Square Foot Automated Car Wash) 23 East Rider Street, Perris, CA
Appendix C: On-Site Operational Noise Level Estimates Prepared by MIG, Inc. September 2020
Sheet 2: On-Site Noise Level Estimates
Table 5: Summary of Noise Levels at East Property Line (R4)
Distance Hourly Leq dBA Distance Hourly Leq dBA No. Sources Hourly Leq dBA
On-Site Vehicle Trip (A1) 3 37.2 232 -0.5 64 17.5
On-Site Vehicle Trip (A2) 3 37.2 129 4.5 20 17.6
On-Site Vehicle Trip (A3) 3 37.2
On-Site Vehicle Trip (A4) 3 37.2 274 -2.0 54 15.3
On-Site Vehicle Trip (A5) 3 37.2 220 -0.1 54 17.2
Vehicle Parking (P1) 3 67.2
Vehicle Parking (P2) 3 67.2 139 33.9 8 42.9
Vehicle Parking (P3) 3 67.2 101 36.7 8 45.7
Vehicle Parking (P4) 3 67.2 124 34.9 4 40.9
Vehicle Parking (P5) 3 67.2
Fuel Truck Delivery (T1) 3 83.9
HVAC Unit (H1) 3 71.2 166 26.4 4 32.4
Vacuum (V1) 3 78.2 112 46.8 1 46.8
Vacuum (V2) 3 78.2 122 46.0 1 46.0
Car Wash Entrance (W1) 3 90.0 92 55.3 1 55.3
Car Wash Exit (W2) 3 90.0
Table 6: Summary of Noise Levels at South Property Line (R5)
Distance Hourly Leq dBA Distance Hourly Leq dBA No. Sources Hourly Leq dBA On-Site Vehicle Trip (A1) 3 37.2
On-Site Vehicle Trip (A2) 3 37.2 168 2.3 20 15.3
On-Site Vehicle Trip (A3) 3 37.2 214 0.2 64 18.2
On-Site Vehicle Trip (A4) 3 37.2 On-Site Vehicle Trip (A5) 3 37.2
Vehicle Parking (P1) 3 67.2
Vehicle Parking (P2) 3 67.2 169 32.2 8 41.2
Vehicle Parking (P3) 3 67.2 77 39.0 8 48.1
Vehicle Parking (P4) 3 67.2 121 35.1 4 41.1
Vehicle Parking (P5) 3 67.2
Fuel Truck Delivery (T1) 3 83.9
HVAC Unit (H1) 3 71.2 179 25.7 4 31.7
Vacuum (V1) 3 78.2
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Reference Noise Data East Property Line
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
7-Eleven Project (With 12 Fuel Pumps and 991 Square Foot Automated Car Wash) 23 East Rider Street, Perris, CA
Appendix C: On-Site Operational Noise Level Estimates Prepared by MIG, Inc. September 2020
Sheet 2: On-Site Noise Level Estimates
Table 7: Summary of Noise Levels at South Property Line (R6)
Distance Hourly Leq dBA Distance Hourly Leq dBA No. Sources Hourly Leq dBA On-Site Vehicle Trip (A1) 3 37.2
On-Site Vehicle Trip (A2) 3 37.2
On-Site Vehicle Trip (A3) 3 37.2 96 7.1 64 25.2
On-Site Vehicle Trip (A4) 3 37.2 179 1.7 54 19.0
On-Site Vehicle Trip (A5) 3 37.2 165 2.4 54 19.7
Vehicle Parking (P1) 3 67.2
Vehicle Parking (P2) 3 67.2
Vehicle Parking (P3) 3 67.2
Vehicle Parking (P4) 3 67.2 133 34.3 4 40.3
Vehicle Parking (P5) 3 67.2 160 32.7 9 42.2
Fuel Truck Delivery (T1) 3 83.9 240 45.8 1 45.8
HVAC Unit (H1) 3 71.2 187 25.3 4 31.4
Vacuum (V1) 3 78.2
Vacuum (V2) 3 78.2
Car Wash Entrance (W1) 3 90.0
Car Wash Exit (W2) 3 90.0 55 64.8 1 64.8
Table 8: Summary of Noise Levels at West Property Line (R7)
Distance Hourly Leq dBA Distance Hourly Leq dBA No. Sources Hourly Leq dBA
On-Site Vehicle Trip (A1) 3 37.2 300 -12.8 64 5.3
On-Site Vehicle Trip (A2) 3 37.2
On-Site Vehicle Trip (A3) 3 37.2 33 6.4 64 24.5
On-Site Vehicle Trip (A4) 3 37.2 138 -6.0 54 11.3
On-Site Vehicle Trip (A5) 3 37.2 172 -7.9 54 9.4
Vehicle Parking (P1) 3 67.2
Vehicle Parking (P2) 3 67.2
Vehicle Parking (P3) 3 67.2 202 20.7 8 29.7
Vehicle Parking (P4) 3 67.2 209 20.4 4 26.4
Vehicle Parking (P5) 3 67.2 194 21.0 9 30.6
Fuel Truck Delivery (T1) 3 83.9 223 36.5 1 36.5
HVAC Unit (H1) 3 71.2 237 23.3 4 29.3
Vacuum (V1) 3 78.2 188 32.3 1 32.3
Vacuum (V2) 3 78.2 179 32.7 1 32.7
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
On-Site Noise Source Reference Noise Data South Property Line
Source does not substantially contribute to noise levels at this location.
7-Eleven Project (With 12 Fuel Pumps and 991 Square Foot Automated Car Wash) 23 East Rider Street, Perris, CA
Appendix C: On-Site Operational Noise Level Estimates Prepared by MIG, Inc. September 2020
Sheet 2: On-Site Noise Level Estimates
Table 9: Summary of Noise Levels at West Property Line (R8)
Distance Hourly Leq dBA Distance Hourly Leq dBA No. Sources Hourly Leq dBA
On-Site Vehicle Trip (A1) 3 37.2 207 0.4 64 18.5
On-Site Vehicle Trip (A2) 3 37.2
On-Site Vehicle Trip (A3) 3 37.2 214 0.2 64 18.2
On-Site Vehicle Trip (A4) 3 37.2 91 7.6 54 24.9
On-Site Vehicle Trip (A5) 3 37.2 188 1.3 54 18.6
Vehicle Parking (P1) 3 67.2 201 30.7 6 38.5
Vehicle Parking (P2) 3 67.2
Vehicle Parking (P3) 3 67.2 266 28.3 8 37.3
Vehicle Parking (P4) 3 67.2 234 29.4 4 35.4
Vehicle Parking (P5) 3 67.2 165 32.4 9 42.0
Fuel Truck Delivery (T1) 3 83.9 97 53.7 1 53.7
HVAC Unit (H1) 3 71.2 206 24.5 4 30.5
Vacuum (V1) 3 78.2 262 39.4 1 39.4
Vacuum (V2) 3 78.2 255 39.6 1 39.6
Car Wash Entrance (W1) 3 90.0
Car Wash Exit (W2) 3 90.0 255 51.4 1 51.4
Table 10: Summary of Car Wash Noise Levels at Property Lines
East (R3) East (R4) South (R5) South (R6)
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
Source does not substantially contribute to noise levels at this location.
On-Site Noise Source Reference Noise Data West Property Line
(Single Source) West Property Line (Multiple Sources)
64.76 Property Line Existing Ambient
(CNEL) Car Wash Noise LevelsAverage (Hourly Leq)
55.71
7-Eleven Project (With 12 Fuel Pumps and 991 Square Foot Automated Car Wash) 23 East Rider Street, Perris, CA
Appendix C: On-Site Operational Noise Level Estimates Prepared by MIG, Inc. September 2020
Sheet 3: Preliminary Barrier Effectiveness Estimates
Table 1: Source Information
Fresnel Number (N0) and 6-Foot High Barrier Insertion Loss Estimate Table 2: Barrier Attenuation (6-Foot High Wall)
6-Foot Barrier 7-Foot Barrier Table 2: Barrier Insertion Loss Summary
Receptor
Assumes 96 dBA Lmax and 90 dBA Leq at 3 feet from entrance/ex See Sheet 2, Table 10
7-Eleven Project (With 12 Fuel Pumps and 991 Square Foot Automated Car Wash) 23 East Rider Street, Perris, CA
Appendix C: On-Site Operational Noise Level Estimates Prepared by MIG, Inc. September 2020
Sheet 3: Preliminary Barrier Effectiveness Estimates
Receptor A B C D D1 D2 H1 H2
South (R6) 1.02 2.30 0.8908 12.63
12.63 Table 4: Barrier Attenuation (8-Foot High Wall)
Fresnel Number (N0) and 7-Foot High Barrier Insertion Loss Estimate
Fresnel Number (N0) and 8-Foot Barrier Insertion Loss Estimate Table 3: Barrier Attenuation (7-Foot High Wall)
Appendix C
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