TECHNICAL MEMORANDUM
20341 SW Birch Street | Suite 230 | Newport Beach, CA 92660 | (949) 660-1994 | urbanxroads.com DATE: January 27, 2026
TO: Jamie McLaughlin, Ares Industrial Management
FROM: Bill Lawson, Urban Crossroads, Inc.
JOB NO: 16570-06 NA
SUBJECT: MURRIETA AND ETHANAC SUPPLEMENTAL NOISE ASSESSMENT Urban Crossroads, Inc. has completed the following Supplemental Noise Assessment for the Murrieta and Ethanac (Project), which is located east of Geary Street, south of Ethanac Road and west of Murrieta Road in the City of Menifee. The proposed Project is to consist of an approximately 517,720 square foot (SF) industrial warehouse building.
PROJECT OVERVIEW
On November 20, 2024, Urban Crossroads, Inc. prepared the Noise and Vibration Analysis (NA) for the Project. (1) The Noise Analysis evaluated the existing noise conditions, the off -site traffic noise levels as well as the Project construction and operational noise and vibration impacts. The NA determined that three segments near the Project site will experience Potentially Significant Project- related off-site traffic noise increases. The purpose of this work effort is to evaluate the interim condition in which Geary Street is not improved north of the Project boundary to Ethanac Road.
Instead, Project traffic will utilize Geary Street, and the Circulation Driveway to access the west side of the Project.
OFF-SITE TRAFFIC NOISE ANALYSIS
Noise level increases resulting from the Project are evaluated based on the Appendix G CEQA Guidelines. Under CEQA, consideration must be given to the magnitude of the increase, the existing baseline ambient noise levels, and the location of noise -sensitive receivers to determine if a noise increase represents a significant adverse environmental impact. Based on the FICON significance criteria for off -site traffic noise presented in Table 4 -1 of the NA , three of the study area roadway segments were shown to experience potentially significant off-site traffic noise increases due to the proposed Project traffic conditions. The segments are described below. • Geary Street south of Ethanac Road (Segment #1)
• Murrieta Road south of Ethanac Road (Segment #3)
• Ethanac Road east of Murrieta Road (Segment #8)
Table 1 presents a summary of the existing conditions incremental noise increases by roadway segment outlined in the NA.
16570-06 NA 2 Murrieta and Ethanac
TABLE 1: OFF-SITE TRAFFIC NOISE INCREASES
ID Road Segment Receiving
Land Use1
CNEL at Receiving
Land Use (dBA)2
Incremental Noise
Level Increase
Threshold3
No
Project
With
Project
Project
Addition Limit Exceeded?
1 Geary St. s/o Ethanac Rd. Sensitive 48.3 65.9 17.6 5.0 Yes 2 Murrieta Rd. n/o Ethanac Rd. Sensitive 64.9 64.9 0.0 3.0 No 3 Murrieta Rd. s/o Ethanac Rd. Sensitive 68.1 69.9 1.8 1.5 Yes 4 Murrieta Rd. n/o Circulation Dwy. Non-Sensitive 68.2 69.3 1.1 n/a No 5 Murrieta Rd. n/o Mclaughlin Rd. Non-Sensitive 68.2 68.2 0.0 n/a No 6 Ethanac Rd. w/o Geary St. Sensitive 73.6 73.6 0.0 1.5 No 7 Ethanac Rd. w/o Murrieta Rd. Sensitive 73.8 74.8 1.0 1.5 No 8 Ethanac Rd. e/o Murrieta Rd. Sensitive 74.4 76.0 1.6 1.5 Yes 9 Ethanac Rd. w/o Barnett Rd. Non-Sensitive 74.3 76.0 1.7 3.0 No 10 Ethanac Rd. e/o Barnett Rd. Non-Sensitive 76.0 77.2 1.2 3.0 No 1 Based on a review of existing aerial imagery. Noise sensitive uses limited to existing residential land uses. 2 The CNEL is calculated at the boundary of the right -of-way of each roadway and the property line of the receiving land use. 3 Does the Project create an incremental noise level increase exceeding the significance criteria (Table 4 -1)? Table 1 shows that Geary Street south of Ethanac Road (Segment #1) will experience noise level increases of up to 17.6 dBA. However, a review of the existing conditions shows that this roadway segment is currently an unpaved dirt road that passes three existing homes located on Floyd Avenue.
With little to no existing traffic on Geary Street, the existing off-site traffic noise levels on Geary Street south of Ethanac Road were calculated at 48.3 dBA CNEL. The addition of the Project traffic including medium and heavy trucks shows that the off-site traffic noise levels at the right-of-way on Geary Street south of Ethanac Road (Segment #1) are estimated at 65.9 dBA CNEL.
Based on the FICON significance criteria, this impact or perceived increase in noise levels for the homes adjacent to Geary Street south of Ethanac Road (Segment #1) is considered potentially significant. In addition, the NA fully accounts for the Project related truck trips recognizing that the trucks disproportionately influence traffic noise due to their size, weight, engine characteristics, and tire-road interactions, which generate significantly higher noise levels when compared to lighter vehicles like passenger cars.
INTERIM PROJECT ACCESS OFF-SITE TRAFFIC NOISE ANALYSIS
The purpose of this work effort is to determine whether the proposed interim Project access results in changes to the off-site traffic noise increases and the potentially significant impacts outlined above in Table 1 of the NA. Table 2 presents a summary of the interim off-site traffic noise increases based on the project trip distributions provided in the October 20, 2025, Murrieta Road Warehouse Supplemental Traffic Assessment prepared by Urban Crossroads, Inc. (2) that sends Project traffic south on Geary Street east on the Circulation Driveway to access the west side of the Project and Murrieta Road. Table 2 shows that interim conditions will eliminate the off-site traffic noise impacts on Geary Street south of Ethanac Road (Segment #1). In effect, for the interim conditions, no Project traffic will utilize Geary Street south of Ethanac Road (Segment #1), and therefore, the off-site traffic noise impacts on this segment are considered less than significant.
16570-06 NA 3 Murrieta and Ethanac
TABLE 2 INTERIM OFF-SITE TRAFFIC NOISE INCREASES
ID Road Segment Receiving
Land Use1
CNEL at Receiving
Land Use (dBA)2
Incremental Noise
Level Increase
Threshold3
No
Project
With
Project
Project
Addition Limit Exceeded?
1 Geary St. s/o Ethanac Rd. Sensitive 48.3 48.3 0.0 5.0 No 2 Murrieta Rd. n/o Ethanac Rd. Sensitive 64.9 64.9 0.0 3.0 No 3 Murrieta Rd. s/o Ethanac Rd. Sensitive 68.1 71.2 3.1 1.5 Yes 4 Murrieta Rd. n/o Circulation Dwy. Non-Sensitive 68.2 71.3 3.1 n/a No 5 Murrieta Rd. n/o Mclaughlin Rd. Non-Sensitive 68.2 68.2 0.0 n/a No 6 Ethanac Rd. w/o Geary St. Sensitive 73.6 73.6 0.0 1.5 No 7 Ethanac Rd. w/o Murrieta Rd. Sensitive 73.8 73.8 0.0 1.5 No 8 Ethanac Rd. e/o Murrieta Rd. Sensitive 74.4 76.0 1.6 1.5 Yes 9 Ethanac Rd. w/o Barnett Rd. Non-Sensitive 74.3 76.0 1.7 3.0 No 10 Ethanac Rd. e/o Barnett Rd. Non-Sensitive 76.0 77.2 1.2 3.0 No 1 Based on a review of existing aerial imagery. Noise sensitive uses limited to existing residential land uses. 2 The CNEL is calculated at the boundary of the right -of-way of each roadway and the property line of the receiving land use. 3 Does the Project create an incremental noise level increase exceeding the significance criteria (Table 4 -1)? Table 2 shows that the off-site traffic noise level increases on Murrieta Road south of Ethanac Road (Segment #3) and Ethanac Road east of Murrieta Road (Segment #8) will remain potentially significant, however, the increase of 1.6 dBA does not change due to the added interim Project traffic conditions on Ethanac Road east of Murrieta Road (Segment #8) . Appendix 1 includes the interim off-site traffic noise analysis.
REFERENCES
1. Urban Crossroads, Inc. Murrieta Road Warehouse. November 20, 2024.
2. —. Murrieta Road Warehouse Supplemental Traffic Assessment. October 20, 2025.
16570-06 NA Murrieta and Ethanac
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16570-06 NA Murrieta and Ethanac
APPENDIX 1:
INTERIM OFF-SITE TRAFFIC NOISE CALCULATIONS
16570-06 NA Murrieta and Ethanac
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FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: s/o Ethanac Rd.
Road Name: Geary St.
Scenario: EP1
80 10.00%
37.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 8 vehicles
Centerline Dist. to Barrier:
37.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
40 mphVehicle Speed:
Near/Far Lane Distance: 12 feet
REMEL Traffic Flow Distance
-22.41
VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 97.42%
48.9% 2.2% 48.9% 1.84%
47.3% 5.4% 47.3% 0.74%
1.88 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
77.72 -39.65 1.93 -1.20 0.000 0.000
82.99 -43.60 1.92 -1.20 0.000 0.000
-4.56
-4.87
-5.61
Medium Trucks:
Heavy Trucks:
Autos:
66.51 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
36.851
36.610
36.634
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
44.8 42.8 41.5 35.5 44.543.9
38.8 40.1
34.9 27.4 36.1 42.442.3
36.1 32.7 37.3 43.643.5
Vehicle Noise: 46.8 44.2 42.2 41.1 48.348.1
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
1 3 136
1 3 136
Monday, January 26, 2026
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: n/o Ethanac Rd.
Road Name: Murrieta Rd.
Scenario: EP1
3,823
10.00%
50.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 382 vehicles
Centerline Dist. to Barrier:
50.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
45 mphVehicle Speed:
Near/Far Lane Distance: 45 feet
REMEL Traffic Flow Distance
-6.12
VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 97.48%
48.9% 2.2% 48.9% 1.80%
47.3% 5.4% 47.3% 0.72%
0.59 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
79.45 -23.47 0.62 -1.20 0.000 0.000
84.25 -27.43 0.62 -1.20 0.000 0.000
-4.65
-4.87
-5.43
Medium Trucks:
Heavy Trucks:
Autos:
68.46 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
44.931
44.733
44.752
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
61.7 59.7 58.4 52.4 61.460.8
55.4 56.2
51.5 44.0 52.8 59.058.9
52.2 48.8 53.4 59.759.6
Vehicle Noise: 63.5 61.0 59.0 57.7 64.964.6
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
22 47 220102
23 50 230107
Monday, January 26, 2026
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: s/o Ethanac Rd.
Road Name: Murrieta Rd.
Scenario: EP1
8,658
10.00%
50.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 866 vehicles
Centerline Dist. to Barrier:
50.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
45 mphVehicle Speed:
Near/Far Lane Distance: 45 feet
REMEL Traffic Flow Distance
-2.67
VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 95.37%
48.9% 2.2% 48.9% 1.80%
47.3% 5.4% 47.3% 2.83%
0.59 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
79.45 -19.91 0.62 -1.20 0.000 0.000
84.25 -17.95 0.62 -1.20 0.000 0.000
-4.65
-4.87
-5.43
Medium Trucks:
Heavy Trucks:
Autos:
68.46 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
44.931
44.733
44.752
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
65.2 63.2 61.9 55.9 64.964.3
59.0 65.7
55.1 47.6 56.3 62.562.5
61.7 58.3 62.9 69.269.1
Vehicle Noise: 68.9 65.9 63.6 64.4 71.271.0
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
58 126 584271
60 130 603280
Monday, January 26, 2026
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: n/o Circulation Dwy.
Road Name: Murrieta Rd.
Scenario: EP1
8,702
10.00%
50.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 870 vehicles
Centerline Dist. to Barrier:
50.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
45 mphVehicle Speed:
Near/Far Lane Distance: 45 feet
REMEL Traffic Flow Distance
-2.65
VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 95.32%
48.9% 2.2% 48.9% 1.84%
47.3% 5.4% 47.3% 2.83%
0.59 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
79.45 -19.79 0.62 -1.20 0.000 0.000
84.25 -17.92 0.62 -1.20 0.000 0.000
-4.65
-4.87
-5.43
Medium Trucks:
Heavy Trucks:
Autos:
68.46 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
44.931
44.733
44.752
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
65.2 63.2 61.9 55.9 64.964.3
59.1 65.8
55.2 47.7 56.4 62.662.6
61.7 58.3 63.0 69.369.2
Vehicle Noise: 69.0 65.9 63.6 64.5 71.371.1
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
59 127 588273
61 131 607282
Monday, January 26, 2026
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: n/o Mclaughlin Rd.
Road Name: Murrieta Rd.
Scenario: EP1
8,127
10.00%
50.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 813 vehicles
Centerline Dist. to Barrier:
50.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
45 mphVehicle Speed:
Near/Far Lane Distance: 45 feet
REMEL Traffic Flow Distance
-2.85
VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 97.48%
48.9% 2.2% 48.9% 1.80%
47.3% 5.4% 47.3% 0.72%
0.59 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
79.45 -20.19 0.62 -1.20 0.000 0.000
84.25 -24.15 0.62 -1.20 0.000 0.000
-4.65
-4.87
-5.43
Medium Trucks:
Heavy Trucks:
Autos:
68.46 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
44.931
44.733
44.752
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
65.0 63.0 61.7 55.7 64.764.1
58.7 59.5
54.8 47.3 56.0 62.262.2
55.5 52.1 56.7 63.062.9
Vehicle Noise: 66.8 64.2 62.3 60.9 68.267.9
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
36 78 363169
38 82 381177
Monday, January 26, 2026
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: w/o Geary St.
Road Name: Ethanac Rd.
Scenario: EP1
12,430
10.00%
53.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 1,243 vehicles
Centerline Dist. to Barrier:
53.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
55 mphVehicle Speed:
Near/Far Lane Distance: 78 feet
REMEL Traffic Flow Distance
-1.88
VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 97.42%
48.9% 2.2% 48.9% 1.84%
47.3% 5.4% 47.3% 0.74%
1.99 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
82.40 -19.12 2.04 -1.20 0.000 0.000
86.40 -23.07 2.03 -1.20 0.000 0.000
-4.66
-4.87
-5.40
Medium Trucks:
Heavy Trucks:
Autos:
71.78 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
36.235
35.990
36.014
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
70.7 68.7 67.4 61.4 70.469.8
64.1 64.2
60.2 52.7 61.5 67.767.6
60.1 56.7 61.4 67.767.6
Vehicle Noise: 72.3 69.8 67.9 66.2 73.673.2
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
87 187 870404
92 197 915425
Monday, January 26, 2026
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: w/o Murrieta Rd.
Road Name: Ethanac Rd.
Scenario: EP1
13,200
10.00%
53.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 1,320 vehicles
Centerline Dist. to Barrier:
53.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
55 mphVehicle Speed:
Near/Far Lane Distance: 78 feet
REMEL Traffic Flow Distance
-1.62
VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 97.42%
48.9% 2.2% 48.9% 1.84%
47.3% 5.4% 47.3% 0.74%
1.99 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
82.40 -18.86 2.04 -1.20 0.000 0.000
86.40 -22.81 2.03 -1.20 0.000 0.000
-4.66
-4.87
-5.40
Medium Trucks:
Heavy Trucks:
Autos:
71.78 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
36.235
35.990
36.014
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
71.0 68.9 67.6 61.6 70.770.0
64.4 64.4
60.5 53.0 61.7 67.967.9
60.4 57.0 61.6 67.967.8
Vehicle Noise: 72.5 70.0 68.1 66.4 73.873.5
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
91 195 906420
95 205 953442
Monday, January 26, 2026
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: e/o Murrieta Rd.
Road Name: Ethanac Rd.
Scenario: EP1
15,462
10.00%
53.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 1,546 vehicles
Centerline Dist. to Barrier:
53.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
55 mphVehicle Speed:
Near/Far Lane Distance: 78 feet
REMEL Traffic Flow Distance
-0.99
VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 96.15%
48.9% 2.2% 48.9% 1.91%
47.3% 5.4% 47.3% 1.95%
1.99 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
82.40 -18.01 2.04 -1.20 0.000 0.000
86.40 -17.93 2.03 -1.20 0.000 0.000
-4.66
-4.87
-5.40
Medium Trucks:
Heavy Trucks:
Autos:
71.78 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
36.235
35.990
36.014
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
71.6 69.6 68.3 62.3 71.370.7
65.2 69.3
61.3 53.8 62.6 68.868.8
65.3 61.9 66.5 72.872.7
Vehicle Noise: 74.2 71.4 69.3 69.0 76.075.8
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
129 277 1,287597
134 288 1,339621
Monday, January 26, 2026
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: w/o Barnett Rd.
Road Name: Ethanac Rd.
Scenario: EP1
15,505
10.00%
53.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 1,551 vehicles
Centerline Dist. to Barrier:
53.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
55 mphVehicle Speed:
Near/Far Lane Distance: 78 feet
REMEL Traffic Flow Distance
-0.97
VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 96.26%
48.9% 2.2% 48.9% 1.83%
47.3% 5.4% 47.3% 1.91%
1.99 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
82.40 -18.18 2.04 -1.20 0.000 0.000
86.40 -17.99 2.03 -1.20 0.000 0.000
-4.66
-4.87
-5.40
Medium Trucks:
Heavy Trucks:
Autos:
71.78 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
36.235
35.990
36.014
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
71.6 69.6 68.3 62.3 71.370.7
65.1 69.2
61.2 53.7 62.4 68.668.6
65.2 61.8 66.4 72.772.6
Vehicle Noise: 74.2 71.4 69.3 68.9 76.075.7
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
128 275 1,275592
133 286 1,327616
Monday, January 26, 2026
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL (9/12/2021)
SITE SPECIFIC INPUT DATA
Project Name: Murrieta Road Warehouse
Job Number: 16570
Road Segment: e/o Barnett Rd.
Road Name: Ethanac Rd.
Scenario: EP1
22,455
10.00%
53.0 NOISE MODEL INPUTS
Average Daily Traffic (Adt):
Peak Hour Percentage:
Peak Hour Volume: 2,246 vehicles
Centerline Dist. to Barrier:
53.0Centerline Dist. to Observer:
Highway Data
feet
feet
vehicles
Road Elevation: 0.0
Road Grade: 0.0%
Pad Elevation: 0.0
Site Data
Site Conditions (Hard = 10, Soft = 15)
Medium Trucks (2 Axles): 15
Heavy Trucks (3+ Axles): 15
Autos: 15
Vehicle Mix
feet
feet Lane Equivalent Distance (in feet)
Barrier Height: 0.0
Observer Height (Above Pad): 5.0 feet
feet
55 mphVehicle Speed:
Near/Far Lane Distance: 78 feet
REMEL Traffic Flow Distance
0.65 VehicleType Day Evening Night Daily
Medium Trucks:
Heavy Trucks:
Autos: 75.6% 14.0% 10.5% 96.62%
48.9% 2.2% 48.9% 1.83%
47.3% 5.4% 47.3% 1.55%
1.99 Finite Road
-1.20
Left View: -90.0
Right View: 90.0
degrees
degrees
Barrier Atten
FHWA Noise Model Calculations
0.0Barrier Distance to Observer: feet
Barrier Type (0-Wall, 1-Berm): 0.0
0.000 0.000
Fresnel Berm Atten
Medium Trucks:
Heavy Trucks:
Autos:
VehicleType
82.40 -16.56 2.04 -1.20 0.000 0.000
86.40 -17.30 2.03 -1.20 0.000 0.000
-4.66
-4.87
-5.40
Medium Trucks:
Heavy Trucks:
Autos:
71.78 Noise Source Elevations (in feet)
Medium Trucks:
Heavy Trucks:
Autos: 0.000
2.297
8.004
36.235
35.990
36.014
Grade Adjustment: 0.0
Unmitigated Noise Levels (without Topo and barrier attenuation) Medium Trucks:
Heavy Trucks:
Autos:
VehicleType Leq Peak Hour Leq Day Leq Evening Leq Night CNELLdn
73.2 71.2 69.9 63.9 72.972.3
66.7 69.9
62.8 55.3 64.0 70.270.2
65.9 62.5 67.1 73.473.3
Vehicle Noise: 75.5 72.8 70.8 70.1 77.276.9
Centerline Distance to Noise Contour (in feet)
CNEL:
Ldn:
70 dBA 65 dBA 55 dBA60 dBA
153 330 1,531711
160 344 1,597741
Monday, January 26, 2026