3752950 3752960 3752970 3752980 3752990 3753000 3753010 3753020 3753030 3753040 3752950 3752960 3752970 3752980 3752990 3753000 3753010 3753020 3753030 3753040 458880 458890 458900 458910 458920 458930 458940 458950 458960 458970 458980 458990 459000 459010 459020 458880 458890 458900 458910 458920 458930 458940 458950 458960 458970 458980 458990 459000 459010 33° 55' 1'' N
117° 26' 41'' W
33° 55' 1'' N
117° 26' 35'' W
33° 54' 58'' N
117° 26' 41'' W
33° 54' 58'' N
117° 26' 35'' W
N
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 11N WGS84 0 30 60 120 180
Feet
0 5 10 20 30
Meters
Map Scale: 1:652 if printed on A landscape (11" x 8.5") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:15,800.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as of the version date(s) listed below.
Soil Survey Area: Western Riverside Area, California
Survey Area Data: Version 16, Aug 30, 2023
Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.
Date(s) aerial images were photographed: Mar 14, 2022—Mar 17, 2022
The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.
Soil Map—Western Riverside Area, California
(web soil)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
6/12/2024
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI HcC Hanford coarse sandy loam, 2
to 8 percent slopes
0.8 100.0%
Totals for Area of Interest 0.8 100.0%
Soil Map—Western Riverside Area, California web soil
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
6/12/2024
NOISE IMPACT ANALYSIS
VAN BUREN 7‐ELEVEN PROJECT
CITY OF RIVERSIDE
Lead Agency:
City of Riverside
3900 Main Street – 3rd Floor
Riverside, CA 92501
Prepared by:
Vista Environmental
1021 Didrickson Way
Laguna Beach, California 92651
949 510 5355
Greg Tonkovich, INCE
Project No. 24040
August 12, 2024
Van Buren 7‐Eleven Project, Noise Impact Analysis
City of Riverside
Page i
TABLE OF CONTENTS
1.0 Introduction ............................................................................................................................ 1
1.1 Purpose of Analysis and Study Objectives ................................................................................. 1
1.2 Site Location and Study Area ..................................................................................................... 1
1.3 Proposed Project Description .................................................................................................... 1
1.4 Executive Summary .................................................................................................................... 1
1.5 Mitigation Measures for the Proposed Project ......................................................................... 3
2.0 Noise Fundamentals ................................................................................................................ 6
2.1 Noise Descriptors ....................................................................................................................... 6
2.2 Tone Noise ................................................................................................................................. 6
2.3 Noise Propagation ...................................................................................................................... 6
2.4 Ground Absorption .................................................................................................................... 7
3.0 Ground‐Borne Vibration Fundamentals ................................................................................... 8
3.1 Vibration Descriptors ................................................................................................................. 8
3.2 Vibration Perception .................................................................................................................. 8
3.3 Vibration Propagation ................................................................................................................ 8
4.0 Regulatory Setting ................................................................................................................... 9
4.1 Federal Regulations ................................................................................................................... 9
4.2 State Regulations ..................................................................................................................... 10
4.3 Local Regulations ..................................................................................................................... 11
5.0 Existing Noise Conditions ....................................................................................................... 14
5.1 Noise Measurement Equipment .............................................................................................. 14
5.2 Noise Measurement Results .................................................................................................... 14
6.0 Modeling Parameters and Assumptions ................................................................................. 18
6.1 Operational Noise Modeling .................................................................................................... 18
6.2 Vibration Modeling .................................................................................................................. 20
7.0 Impact Analysis ..................................................................................................................... 22
7.1 CEQA Thresholds of Significance.............................................................................................. 22
7.2 Generation of Noise Levels in Excess of Standards ................................................................. 22
7.3 Generation of Excessive Groundborne Vibration .................................................................... 26
7.4 Aircraft Noise ........................................................................................................................... 27
8.0 References ............................................................................................................................. 28
Van Buren 7‐Eleven Project, Noise Impact Analysis
City of Riverside
Page ii
TABLE OF CONTENTS CONTINUED
APPENDICES
Appendix A – Field Noise Measurements Photo Index
Appendix B – Field Noise Measurements Printouts
Appendix C – FHWA Model Traffic Noise Calculations Printouts Appendix D – Reference Noise Measurements Printouts
Appendix E – Operational Onsite Noise Calculations
Van Buren 7‐Eleven Project, Noise Impact Analysis
City of Riverside
Page iii
LIST OF FIGURES
Figure 1 – Project Location Map ................................................................................................................... 4 Figure 2 – Proposed Site Plan ....................................................................................................................... 5 Figure 3 – Field Noise Monitoring Locations .............................................................................................. 16 Figure 4 – Field Noise Measurements Graph .............................................................................................. 17
LIST OF TABLES
Table A – FTA Project Effects on Cumulative Noise Exposure ...................................................................... 9 Table B – City of Riverside Exterior Noise Standards .................................................................................. 12 Table C – City of Riverside Land Use Category/Zoning Matrix.................................................................... 12 Table D – Existing (Ambient) Noise Level Measurements .......................................................................... 15 Table E – FHWA Model Roadway Parameters ............................................................................................ 18 Table F – FHWA Model Average Daily Traffic Volumes .............................................................................. 19 Table G – Roadway Vehicle Mixes .............................................................................................................. 19 Table H – Reference Noise Level Measurements ....................................................................................... 20 Table I – Vibration Source Levels for Construction Equipment .................................................................. 21 Table J – Existing Year Project Traffic Noise Contributions ........................................................................ 23 Table K – Opening Year 2026 Project Traffic Noise Contributions ............................................................. 24 Table L – Cumulative Year 2045 Project Traffic Noise Contributions ......................................................... 24 Table M – Onsite Operational Noise Levels at the Nearby Sensitive Receptors ........................................ 25
Van Buren 7‐Eleven Project, Noise Impact Analysis
City of Riverside
Page iv
ACRONYMS AND ABBREVIATIONS
ANSI American National Standards Institute
Caltrans California Department of Transportation
CEQA California Environmental Quality Act
City City of Riverside
cmu Concrete masonry unit
CNEL Community Noise Equivalent Level
dB Decibel
dBA A‐weighted decibels
DOT Department of Transportation
FHWA Federal Highway Administration
FTA Federal Transit Administration
EPA Environmental Protection Agency
Hz Hertz
Ldn Day‐night average noise level
Leq Equivalent sound level
Lmax Maximum noise level
ONAC Federal Office of Noise Abatement and Control
OSB Oriented Strand Board
OSHA Occupational Safety and Health Administration
PPV Peak particle velocity
RMS Root mean square
SEL Single Event Level or Sound Exposure Level
STC Sound Transmission Class
UMTA Federal Urban Mass Transit Administration
VdB Vibration velocity level in decibels
Van Buren 7‐Eleven Project, Noise Impact Analysis
City of Riverside
1.0 INTRODUCTION
1.1 Purpose of Analysis and Study Objectives
This Noise Impact Analysis has been prepared to determine the noise impacts associated with the proposed Van Buren 7‐Eleven project (proposed project). The following is provided in this report:
A description of the study area and the proposed project; Information regarding the fundamentals of noise;
Information regarding the fundamentals of vibration;
A description of the local noise guidelines and standards; An evaluation of the current noise environment;
An analysis of the potential short‐term construction‐related noise impacts from the proposed project; and,
An analysis of long‐term operations‐related noise impacts from the proposed project.
1.2 Site Location and Study Area
The project site is located in the western portion of the City of Riverside (City) at 3570 & 3596 Van Buren Boulevard. The approximately 0.86‐acre project site is currently developed with two commercial structures and associated parking lots. The project site is bounded by Van Buren Boulevard and commercial uses to the northeast, commercial uses to the southeast, single‐family homes to the southwest, and Primrose Drive and commercial uses to the northwest. The project study area is shown in Figure 1.
Sensitive Receptors in Project Vicinity
The nearest sensitive receptors to the project site are single‐family homes located as near as 20 feet southwest of the project site. The nearest school is Liberty Elementary School that is located as near as
0.4 mile northwest of the project site.
1.3 Proposed Project Description
The proposed project would consist of demolition of the two commercial buildings and associated parking lots and construction of a 3,048 square foot 7‐Eleven convenience store with a 12 vehicle fuel position gas station. The proposed project would also include ancillary improvements that would include landscaping, a surface parking lot with 24 parking spaces, a trash enclosure, and an air/water dispensing unit. . The proposed site plan is shown in Figure 2.
1.4 Executive Summary
Standard Noise Regulatory Conditions
The proposed project will be required to comply with the following noise and vibration regulations from the City and State of California (State) and this analysis has utilized the following Federal noise and vibration thresholds.
Van Buren 7‐Eleven Project, Noise Impact Analysis
City of Riverside
City of Riverside Noise Regulations
The following lists the noise regulations from the Municipal Code that are applicable, but not limited to the proposed project.
Section 7.25.010 Exterior Sound Level Limits
Section 7.35.010(B)(5) General Noise Regulations
Section 7.35.020(G) Exemptions
State of California Noise Regulations
The following lists the State of California noise regulations that are applicable, but not limited to the proposed project.
California Vehicle Code Section 2700‐27207 – On‐Road Vehicle Noise Limits California Vehicle Code Section 38365‐38350 – Off‐Road Vehicle Noise Limits Federal Noise and Vibration Thresholds
The Transit Noise and Vibration Assessment Manual (FTA Manual), prepared by Federal Transit Administration, September 2018, has been utilized for the following thresholds. Construction Vibration Thresholds
Roadway Noise Increase Thresholds
Summary of Analysis Results
The following is a summary of the proposed project’s impacts with regard to the State CEQA Guidelines noise checklist questions.
Expose persons to noise levels in excess of standards?
Less than significant impact.
Expose persons to excessive groundborne vibration?
Less than significant impact.
Result in a substantial permanent increase in ambient noise levels above existing levels without the proposed project?
Less than significant impact.
Result in a substantial temporary increase in ambient noise levels above existing levels without the proposed project?
Less than significant impact.
Expose persons to excessive noise levels from aircraft? Less than significant impact.
Van Buren 7‐Eleven Project, Noise Impact Analysis
City of Riverside
1.5 Mitigation Measures for the Proposed Project
This analysis found that through adherence to the noise and vibration regulations detailed in Section 1.4 above, were adequate to limit all noise and vibration impacts to less than significant levels. No mitigation measures are required for the proposed project with respect to noise and vibration impacts.