Appendix G
Noise and Vibration Analysis
Kimley»Horn
Noise and Vibration Analysis September 2026
City of Moreno Valley Page 1 of 15
MEMORANDUM
To: Steve Quintanilla, Moreno Valley City Attorney
CC: Angelica Frausto-Lupo, City of Moreno Valley Community Development Director From: Olivia Chan
Heidi Rous, CPP
Kimley-Horn and Associates, Inc.
Date: September 23, 2026
Subject: Noise and Vibration Analysis
Public Safety Campus Project
The City of Moreno Valley (City) proposes to implement the Public Safety Campus Project (Project), which consists of three primary components: (1) development of a Public Safety Campus (PSC); (2) construction of a Corporate Yard Fueling Station (CYFS); and (3) tenant improvements at existing civic center facilities throughout the City. All three components together comprise the Project. The Project also includes improvements to a drainage culvert and roadway improvements on nearby streets. These improvements would accommodate a range of civic uses identified in the City’s Capital Improvement Plan (CIP) and are intended to enhance emergency response capabilities, improve operational efficiency, and support the City’s growing public safety and municipal service needs as the City continues to grow.
PROJECT DESCRIPTION
Public Safety Campus
The Project would include the development and operation of a PSC, which would establish a centralized public safety hub, consisting of a new joint-use fire and police station, Emergency Operations Center (EOC), and a regional animal shelter. The PSC would improve interdepartmental coordination, increase operational efficiency, strengthen emergency preparedness, and provide enhanced public safety services for the City and surrounding region.
Fire Station
The Project proposes a two-story, 50,000 square foot (sf) fire station, designed to serve as a regional facility for the Riverside County Fire Department. The fire station would accommodate approximately 58 employees by 2040. The fire station would include six drive-through apparatus bays supporting Type 1 fire engines, squads, and tiller trucks. Apparatus bay support functions would include equipment and maintenance infrastructure, gear storage, decontamination, medical storage, regional hazardous materials support, and general personnel support. The fire station would also accommodate reserve apparatus, equipment and trailers, secure staff and command parking, and regional staging and Incident Command Post (ICP) functions.
The fire station would include fire administration, operational support, and firefighter living quarters. Living areas would include bunk rooms/sleeping quarters, bathrooms and showers, kitchen, dining and day room functions, clean-side laundry, and associated support spaces.
These areas would be located to provide rapid access to the apparatus bays while minimizing sound transfer between operational and sleeping areas.
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Police Station
The Project would include a two-story, 90,0000 sf police station that would serve as a secure law enforcement facility with operational capacity comparable to that of the City's existing police station. The police station would accommodate approximately 210 employees by 2040. The police station would incorporate controlled public and secure access, a secure perimeter and parking area, and multiple ingress and egress routes while supporting command staff, administration, patrol, specialized units like traffic and community service, special enforcement teams, investigations, property and evidence, and training. A dedicated processing and holding area would be included with physically separated accommodations for juvenile detainees in accordance with applicable standards.
The police station would provide specialized operational, training, and technology spaces, including a Real-Time Crime Center (RTCC), Incident Command Center, dedicated Drone Program operations, armory and weapons maintenance areas, briefing and report-writing spaces, and a defensive tactics training room designed for both mat-based training and simulation exercises.
Additional spaces would support hard and soft interview functions, property and evidence processing and storage, staff locker and wellness areas, functional fitness, and community and multi-purpose training functions. Secure site areas would accommodate fleet and personal staff vehicles, motorcycles, traffic enforcement vehicles, specialized equipment and response vehicles, and provide dedicated holding-related parking stalls. The facility would enhance operational efficiency, maintain appropriate separation between public and secure pedestrian and vehicular circulation, enhance officer safety and emergency response capabilities, and promote community engagement while supporting the City's long-term public safety needs.
Emergency Operations Center
The Project would also include a two-story 30,000 sf EOC, that would serve as the City's primary emergency management and incident coordination facility. The EOC would accommodate five (5) full-time staff members, enhancing the capabilities of the City's existing emergency operations facilities. The EOC would be designed to support coordinated response and recovery efforts during emergencies, disasters, and other major incidents.
Animal Shelter
The Project would develop a two-story, 65,000 sf regional animal shelter that would occupy a range of 6 to 8-acres of the PSC. The animal shelter would accommodate approximately 58 fulltime staff members by 2040. The animal shelter would be designed to provide comprehensive animal care, adoption services, veterinary support, and community outreach functions. Key public and operational spaces would include a welcoming public lobby, dedicated adoption areas, a lowcost veterinary clinic, volunteer space, an administrative office hub, and a conference room with capacity for approximately 75 people.
Infrastructure Improvements
The PSC would incorporate supporting infrastructure, including an approximately 100-foot communications tower to provide reliable Citywide radio and data communications, that would ensure continuity of operations during emergency events. The PSC would also include a shared utility yard, approximately 3,000 sf to support all facilities on the PSC Site.
The PSC Site would also include site lighting, secure fencing and controlled-access gates, electric vehicle (EV) charging stations, ADA-compliant parking spaces and pedestrian pathways, Noise and Vibration Analysis September 2026
City of Moreno Valley Page 3 of 15
emergency generators, fuel storage, general storage facilities, and other operational support amenities required for fire, police, and animal shelter functions. Additionally, covered parking areas may incorporate solar photovoltaic panels to support energy efficiency and sustainability goals.
Additional PSC Site improvements would include landscaping, hardscape, irrigation systems, site lighting, secure fencing and controlled-access gates, EV charging stations, ADA-compliant parking spaces and pedestrian pathways, emergency generators, fuel storage, general storage facilities, and other operational support amenities required for fire, police, and animal shelter functions.
Improvements to the existing on-site drainage channel would be constructed east of Redlands Boulevard and would extend beneath Redlands Boulevard, allowing stormwater flows to be conveyed across the roadway in a controlled manner. The PSC would leave a 30-ft buffer between the existing on-site drainage culvert and the Project Site development. The Project would also incorporate improvements to the existing on-site drainage channel to enhance flood protection and accommodate the proposed campus facilities in accordance with the Riverside County Flood Control and Water Conservation District's master plan. These drainage improvements would improve Project Site resiliency and reduce potential flood-related impacts to critical public safety infrastructure.
Off-site roadway improvements would include full-width improvements along Brodiaea Avenue from Wilmot Street to Redlands Boulevard and along Wilmot Street from Brodiaea Avenue to Cactus Avenue. Half-street improvements would be constructed along Redlands Boulevard from Campbell Avenue to Cactus Avenue and along Cactus Avenue from Redlands Boulevard to Goldenrod Street. Street improvements include new curbs, gutters, sidewalks, landscape, lighting, signage, pavement, and associated drainage facilities to accommodate new, improved roads. To improve traffic operations and enhance emergency response access, three new traffic signals would be installed at the intersections of Brodiaea Avenue and Redlands Boulevard, Redlands Boulevard and Cactus Avenue, and Cactus Avenue and Wilmot Street.
Corporate Yard Fueling Station
In addition to the improvements proposed at the PSC Site, the City would also construct the CYFS, a new aboveground fueling facility that would support the City’s growing municipal fleet demands and ensure reliable emergency fueling capabilities for critical operations. The Project would include the excavation and disposal of existing surface materials, followed by construction of two monolithic structural concrete pads extending two feet beyond each tank footprint. The unleaded gasoline tank pad would measure approximately 17 feet by 12 feet and would be protected by sixteen 8-inch-diameter concrete-filled steel bollards spaced four feet on center. The diesel tank pad would measure approximately 12 feet by 10 feet and would be protected by twelve similarly configured bollards.
The CYFS would include 4,000-gallon UL 2085 aboveground unleaded gasoline storage tank equipped with four tank-mounted dispensing pumps and a 1,000-gallon UL 2085 aboveground diesel storage tank equipped with two tank-mounted dispensing pumps. Both systems would include all associated components required for safe and compliant operation, including venting systems, fill assemblies, spill containment, overfill prevention devices, monitoring equipment, and fuel management controls.
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The CYFS would be integrated with two Gasboy EKOS fuel management systems to provide secure fuel tracking, inventory management, and operational oversight. The contractor would be responsible for complete system installation, startup, programming, calibration, testing, commissioning, and coordination of all required regulatory inspections to ensure the fueling facility is fully operational and compliant with applicable standards.
METHODOLOGY AND ASSUMPTIONS
Construction Noise
Construction noise levels were estimated based on typical noise levels generated by construction equipment published by the Federal Transit Administration (FTA) and Federal Highway Administration (FHWA). Construction noise is assessed in dBA Leq. This unit is appropriate because Leq can be used to describe noise levels from operation of each piece of equipment separately, and levels can be combined to represent the noise level from all equipment operating during a given period.
Construction activities for the PSC would include site preparation, grading, building construction, paving, and architectural coating activities. Construction activities for the CYFS would include demolition, site preparation, grading, and building construction. Construction activities for off-site improvements would include grubbing and land clearing, grading and excavation, drainage, utilities and subgrade, and paving. Typical operating cycles for these types of construction equipment may involve 1 or 2 minutes of full power operation followed by 3 to 4 minutes at lower power settings. Other primary sources of acoustical disturbance would be random incidents, which would last less than one minute, such as dropping large pieces of equipment or the hydraulic movement of machinery lifts.
The FHWA’s Roadway Construction Noise Model (RCNM) was used to calculate noise levels at the nearest residential receptors. See Error! Reference source not found.: Public Safety Campus Noise Measurement Locations and Sensitive Receptors and Figure 2:Fueling Station Noise Measurement Locations for the location of sensitive receptors considered herein.
Noise levels at other sensitive receptors surrounding the Project site would be located further away and would experience lower construction noise levels than the modeled receptors from onsite construction. Noise levels were based on the equipment used, distance to the nearest receptor, and acoustical usage factor for equipment.
When calculating construction noise, equipment anticipated for each individual construction phase is assumed to operate at staggering distances throughout the Project site, with the nearest distance calculated at the Project site boundary. This methodology accounts for equipment operating throughout the Project site and not at a fixed location for extended periods of time.1 Construction related noise levels at the nearest sensitive receptors also factored in a standard noise attenuation rate of 6 dB per doubling of distance (line-of-sight method of sound attenuation for point sources of noise). The noise level estimates do not, however, assume the presence of intervening structures, topography, or temporary barriers. 1 Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, September 2018.
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SOURCE: ArcGIS Pro, 2026
FIGURE 1: Public Safety Campus Noise Measurement Locations and Sensitive Receptors
PUBLIC SAFETY CAMPUS PROJECT
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FIGURE 2: Fueling Station Noise Measurement Locations
PUBLIC SAFETY CAMPUS PROJECT
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Noise and Vibration Analysis September 2026
City of Moreno Valley Page 7 of 15
Operational Noise
The analysis of the Existing and With Project noise environments is based on noise prediction modeling and empirical observations. Reference noise level data are used to estimate the Project operational noise impacts from stationary sources. Noise levels are collected from field noise measurements and other published sources from similar types of activities are used to estimate noise levels expected with the Project’s stationary sources. The reference noise levels are used to represent a worst-case noise environment as noise levels from stationary sources can vary throughout the day. Operational noise is evaluated based on the Moreno Valley Municipal Code exterior noise standards of 60 dBA during daytime hours and 55 dBA during nighttime hours.
Where ambient levels exceed exterior standards, an incremental increase threshold of 5 dBA is utilized. According to California Department of Transportation (Caltrans), a minimum 5-dBA change is required before any noticeable change in community response would be expected.2 Vibration
Groundborne vibration levels associated with construction-related activities for the Project were evaluated utilizing typical groundborne vibration levels associated with construction equipment, obtained from FTA published data for construction equipment. Potential groundborne vibration impacts related to building/structure damage and interference with sensitive existing operations were evaluated, considering the distance from construction activities to nearby land uses and typically applied criteria for structural damage and human annoyance.
For a structure built traditionally, without assistance from qualified engineers, the FTA guidelines show that a vibration level of up to 0.20 in/sec is considered safe and would not result in any vibration damage. FTA guidelines show that modern engineered buildings built with reinforcedconcrete, steel or timber can withstand vibration levels up to 0.50 in/sec and not experience vibration damage. The Caltrans Construction Vibration Guidance Manual identifies the vibration threshold for human annoyance, vibrations levels of 0.4 in/sec PPV is when vibrations are considered severe by people subjected to continuous vibrations and levels of 0.2 in/sec is used for building damage.
EXISTING NOISE ENVIRONMENT
To quantify existing ambient noise levels in the Project vicinity, Kimley-Horn conducted four shortterm (15-minute) measurements and one long-term (24-hour) measurement on August 26, 2026; see Appendix A: Noise Measuring Data for additional details regarding how the ambient noise measurements were taken. The noise measurement sites were selected to be representative of the existing ambient noise levels at the noise-sensitive uses in the vicinity of the Project site. The 15-minute daytime measurements were taken between 11:50 a.m. and 1:43 p.m. Measurements of Leq are considered representative of the noise levels throughout the day. The average noise levels measured at each location are listed in Table 1: Existing Noise Measurement Locations and Measurements and shown on Error! Reference source not found.. 2 California Department of Transportation, Technical Noise Supplement to the Traffic Noise Analysis Protocol, September 2013.
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City of Moreno Valley Page 8 of 15
Table 1: Existing Noise Measurement Locations and Measurements Site Location Measurement Period Duration
Daytime
Average
(dBA Leq)
Nighttime
Average
(dBA Leq)
ST-1 East of 28850 Brodiaea
Avenue
11:50 a.m. – 12:05
p.m.
15 minutes 41.7 N/A
ST-2 Rose Angel Street north of
14341 Wilmont Street
12:14 p.m. – 12:49
p.m.
15 minutes 47.2 N/A
ST-3 Corner of Mammoth Drive and
Cactus Avenue
12:34 p.m. – 12:49
p.m.
15 minutes 62.6 N/A
ST-4 Dana Lane north of 25173
Dana Lane 1:28 p.m. – 1:43 p.m. 15 minutes 52.3 N/A
LT-1 Corner of Wilmont Street and
Brodiaea Avenue
August 26, 2026 at
11:29 a.m. – August
27, 2026 at 11:29 a.m.
24 hours 51.8 44.1
Source: Noise measurements taken by Kimley-Horn and Associates, Inc.. Short-term measurements were taken on August 26, 2026.
The long-term measurement was taken from August 26, 2026 to August 27, 2026. See Appendix A for the noise measurement results.
NOISE IMPACT ANALYSIS
Construction Noise
Construction noise typically occurs intermittently and varies depending on the nature or phase of construction (e.g., land clearing, grading, excavation, paving). Noise generated by construction equipment, including earth movers, material handlers, and portable generators, can reach high levels. During construction, exterior noise levels could affect the receptors near the construction site. Noise-sensitive land uses are generally considered to include those uses where noise exposure could result in health-related risks to individuals, as well as places where quiet is an essential element of their intended purpose. The nearest sensitive receptors to the Project site are the residential uses located to the north, west, and south of the PSC and to the north of the CYFS.
Table 2: Project Construction Noise Levels summarizes the exterior noise levels at the sensitive receptors nearest each Project component compared to the FTA construction noise thresholds of 80 dBA Leq for residential receptors. FEIR Mitigation Measure NOS-1.3.b requires that demolition, construction, site preparation, and related activities within 70 feet of noisesensitive uses properly maintain and equip construction equipment with noise control components such as mufflers. Implementation of this requirement has been incorporated into estimated maximum construction noise levels shown below. See Appendix B for construction noise calculations for sensitive receptors within 500 feet of Project construction activity.
Table 2: Project Construction Noise Levels
Project Component
Maximum
Affected Receptor
Land Use
Receptor Distance
(feet) and Direction
Modeled
Exterior
Noise Level
(dBA Leq)
Noise
Threshold
(dBA Leq)
1 Exceeded?
PSC Residential 50 feet to the West 75.0 80 No
CYFS Residential 50 feet to the north 79.8 80 No
Off-Site Infrastructure
Improvements Residential 30 feet to the north, west, and/or south 77.3 80 No Notes:
1. The FTA’s construction noise threshold of 80 dBA Leq at residential uses (FTA, Transit Noise and Vibration Impact Assessment Manual, September 2018).
Source: Federal Highway Administration, Roadway Construction Noise Model, 2025. Refer to Appendix B for noise modeling results.
As shown in Table 2, construction noise levels would reach up to 75.0 dBA Leq to the west of the PSC, 79.8 dBA Leq at residential uses located to the north of the Corporate Yard, and 77.3 dBA Noise and Vibration Analysis September 2026
City of Moreno Valley Page 9 of 15
Leq at all residential uses located adjacent to off-site roadway improvements. These noise levels would not exceed the FTA standard of 80 dBA Leq at residential uses. Additionally, compliance with Moreno Valley Municipal Code Section 8.14.040 would minimize potential impacts from construction noise, as construction would be limited to the hours between 7:00 a.m. and 7:00 p.m.
Monday through Friday and between 8:00 a.m. and 4:00 p.m. on Saturdays. Further, the Project would be subject to FEIR MM NOS-1, which requires minimizing idling times for noise-generating equipment and incorporation of all feasible noise reduction measures. Impacts would be less than significant.
On-Site Operational Noise
The Project consists of the development of a PSC and CYFS that are assumed to operate 24 hours per day, seven days per week. It is assumed that operational activity at the CYFS would be similar to existing conditions as the city’s fleet currently frequent the site. The addition of a fueling station would not generate substantial increases in activity at the site. Therefore, the analysis focuses on the operation of the PSC.
The proposed PSC includes the operation of a fire station that would respond to emergency service calls. Noise would be generated when the alarm sounds to alert personnel to respond to a service call during an emergency. In addition, the proposed fire station includes a training facility.
Training activities could include the use of a chainsaw, air hammer, jaws of life, and saw.
Maximum noise levels associated with training activities would be 108 dBA Leq at 3.3 feet from the use of a saw.3 Pursuant to Moreno Valley Municipal Code Section 11.80.030(E)(1) and Section 11.80.030(E)(7), sounds from emergency vehicles when responding to an emergency call and City-sponsored events on public space or publicly owned property, respectively, are exempt from sound level regulations. Therefore, on-site noise associated with emergency alerts and City-sponsored fire training activities on public space are not considered in the composite onsite operational noise analysis.
Utilizing the reference noise level data described below, composite operational noise levels at the nearest sensitive receptors surrounding the proposed PSC has been estimated based on the preliminary site layout.
• Mechanical Equipment. Mechanical equipment such as ventilation fans and HVAC equipment would be installed on Project rooftops. Mechanical equipment typically generates noise levels of approximately 52 dBA at 50 feet.4 It is assumed that rooftops would be equipped with architectural features that would block rooftop equipment of view. • Parking Lot. Noises associated with parking activities include vehicles starting and stopping, vehicle doors closing, car horns and car alarms, loading and unloading, car radios, and conversations. Parking activity noise levels can reach 63 dBA Leq at 50 feet and are short-term in nature.5
• Outdoor Kennel. Noise associated with an outdoor kennel includes barking and howling dogs, which would reach approximately 85 dBA Leq at 3.3 feet.6 3 Journal of Occupational and Environmental Hygiene, Firefighter Noise Exposure During Training Activities and General Equipment Use, Table IV Mean Noise Levels for Station and Fire Engine Equipment, 2012. 4 Elliott H. Berger, Rick Neitzel, and Cynthia A. Kladden, Noise Navigator Sound Level Database with Over 1700 Measurement Values, July 6, 2010. 5 Kariel, H. G., Noise in Rural Recreational Environments, Canadian Acoustics 19(5), 3-10, 1991. 6 Elliott H. Berger, Rick Neitzel, and Cynthia A. Kladden, Noise Navigator Sound Level Database with Over 1700 Measurement Values, July 6, 2010.
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• Drone Launch. The PSC would include docking areas for drones. Noise associated with drones can reach 79 dBA Leq at 3.3 feet.7 It is assumed that drone launch would occur from rooftop of the police station, which would be shielded by architectural features. • Shielding. It is assumed that the Project site would include perimeter walls that would block the line-of-sight of on-site activities from off-site sensitive receptors. Therefore, a 10 dBA reduction in noise levels has been applied to each of the on-site noise sources listed above.
Daytime and nighttime composite noise levels are shown in Table 3: Composite On-Site Operational Noise Levels – Daytime and Table 4: Composite On-Site Operational Noise Levels - Nighttime. All daytime sources have been assumed to also occur during nighttime hours. It should be noted that predicted noise levels are conservative estimates since it was assumed that all operational activity at the Project site would occur in a constant, simultaneous manner. In reality, it is anticipated that these noise sources would occur intermittently throughout the day and night (except for rooftop HVAC which would operate in a steady-state manner).
Table 3: Composite On-Site Operational Noise Levels – Daytime Receptor
Combined OnSite Project
Noise (dBA Leq) 1
Daytime
Ambient
Noise Level
(dBA Leq) 2
Combined
Project and
Ambient Noise
level (dBA Leq)
Applicable
Noise
Threshold
(dBA Leq) 3
Exceeded?
1 – Residential (N) 45.9 41.7 47.3 60.0 No
2 – Residential (W) 47.3 47.2 50.3 60.0 No
3 – Residential (W) 30.9 47.2 47.3 60.0 No
4 – Residential (S) 42.8 62.6 62.6 67.6 No
Notes:
1. See Appendix C for operational noise calculations.
2. See Table 1 for representative noise measurements.
3. Pursuant to Section 11.80.030(c) of the Moreno Valley Municipal Code, the exterior noise standard for residential uses during daytime hours is 60 dBA. Representative ambient noise levels at receptor 4 exceeds 60 dBA under existing conditions. Therefore, the applicable threshold at receptor 4 is an increase in ambient of 5 dBA.
Table 4: Composite On-Site Operational Noise Levels - Nighttime Receptor
Combined
On-Site
Project Noise
(dBA Leq) 1
Nighttime
Ambient
Noise Level
(dBA Leq) 2
Combined
Project and
Ambient
Noise level
(dBA Leq)
Applicable
Noise
Threshold
(dBA Leq) 3
Exceeded?
1 – Residential (N) 45.9 34.7 46.2 55.0 No
2 – Residential (W) 47.3 40.2 48.1 55.0 No
3 – Residential (W) 30.9 40.2 40.7 55.0 No
4 – Residential (S) 42.8 55.6 55.8 60.6 No
Notes:
1. See Appendix C for operational noise calculations.
2. See Table 1 for representative noise measurements. Based on long-term measurement taken at the Project site, the nighttime ambient levels are approximately 7 dBA lower than daytime. A 7 dBA reduction has been taken from representative daytime measurements
3. Pursuant to Section 11.80.030(c) of the Moreno Valley Municipal Code, the exterior noise standard for residential uses during nighttime hours is 55 dBA. Representative ambient noise levels at receptors 4 exceeds 55 dBA under existing conditions.
Therefore, the applicable threshold at receptor 4 is an increase in ambient of 5 dBA.
As shown in Table 3 and Table 4, on-site composite operational noise would not exceed allowable daytime or nighttime exterior standards of 60 dBA or 55 dBA, respectively, at receptors 1, 2, and
3. Ambient levels at receptor 4 exceeds allowable exterior noise levels under existing conditions 7 International Journal of Environmental Research and Public Health. 2021 Dec 25; 19(1):223, A Conceptual Framework Proposal for a Noise Modelling Service for Drones in U-Space Architecture, 2022. https://pmc.ncbi.nlm.nih.gov/articles/PMC8750543/pdf/ijerph-19-00223.pdf. Accessed September 2026.
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and the addition of Project operational noise would not result in a noticeable increase in ambient conditions. Therefore, impacts would be less than significant.
Off-Site Traffic Noise
The FEIR concluded that the traffic noise attributable to new land development would be significant and avoidable. Buildout of the PSC would generate a total of 4,349 daily trips along nearby roadway segments and operation of the CYFS would generate a total of 688 daily vehicle trips.
8 The Project is consistent with the allowable land uses of the General Plan and as a result, traffic noise levels associated with the proposed Project have been contemplated and addressed in the FEIR. Therefore, traffic noise levels generated by the proposed Project would be consistent with the findings of the FEIR. Therefore, the Project’s impacts are within the limits of the impacts identified in the FEIR and the Project would not result in any new or more severe impacts than previously analyzed.
VIBRATION IMPACT ANALYSIS
Construction
On-Site Construction
Increases in ground-borne vibration levels attributable to the Project would be primarily associated with short-term construction-related activities. Project construction would have the potential to result in varying degrees of temporary ground-borne vibration, depending on the specific construction equipment used and the operations involved.
The types of construction vibration impacts include building damage and human annoyance.
Building damage can be cosmetic or structural. Ordinary buildings that are not particularly fragile would not experience any cosmetic damage (e.g., plaster cracks) at distances beyond 30 feet.
This distance can vary substantially depending on the soil composition and underground geological layer between vibration source and receiver. In addition, not all buildings respond similarly to vibration generated by construction equipment. Human annoyance occurs when construction vibration rises significantly above the threshold of human perception for extended periods of time. This analysis uses FTA structural damage criteria of 0.2 in/sec PPV for nonengineered timber and masonry buildings and Caltrans’ human annoyance criterion of 0.4 in/sec PPV for residential receptors.
Project construction would require the use of loaded trucks, bulldozers, and vibratory rollers and compactors. Table 5: Typical Construction Equipment Vibration Levels lists the vibration levels for typical construction equipment at 25 feet (the reference distance), 100 feet (the distance of nearest residential structures to the PSC), 50 feet (the distance of nearest sensitive receptors to the CYFS area), and 35 feet (the distance of nearest sensitive receptors to off-site roadway improvements). As shown in Table 5, construction of the PSC, CYFS, and off-site improvements would not exceed applicable vibration thresholds. Impacts would be less than significant.
Table 5: Typical Construction Equipment Vibration Levels Equipment
Reference Level
PPV at 25 Feet
(in/sec)
PPV at 100 Feet
(in/sec)1,2
PPV at 50 Feet
(in/sec)1,3
PPV at 35 Feet
(in/sec)1,4
Small Bulldozer 0.003 <0.001 0.001 0.002
Loaded Trucks 0.076 0.010 0.027 0.046
Large Bulldozer 0.089 0.011 0.031 0.054
8 Institute of Transportation Engineers (ITE) Trip Generation Manual, 12th Edition.
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Equipment
Reference Level
PPV at 25 Feet
(in/sec)
PPV at 100 Feet
(in/sec)1,2
PPV at 50 Feet
(in/sec)1,3
PPV at 35 Feet
(in/sec)1,4
Vibratory Roller/Compactor 0.21 0.026 0.074 0.127
Structural Damage
Threshold -- 0.2 0.2 0.2
Human Annoyance
Threshold -- 0.4 04 0.4
Threshold Exceeded? -- No No No
PPV = peak particle velocity.
1. Calculated using the following formula: PPVequip = PPVref x (25/D)1.5, where: PPVequip = the peak particle velocity in in/sec of the equipment adjusted for the distance; PPVref = the reference vibration level in in/sec from Table 7-4 of the Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, 2018; D = the distance from the equipment to the receiver.
2. Distance measured from the site boundary of the PSC to the nearest structure/sensitive receptor
3. Distance measured from the boundary of the fueling station area to the nearest structure/sensitive receptor.
4. Distance measured from the nearest roadway to the nearest structure/sensitive receptor.
Source: Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, September 2018.
Off-Site Construction
Project construction would involve truck travel along nearby roadways, generating vibration events with each passing truck. According to the FTA’s Transit Noise and Vibration Impact Assessment, a heavy truck rarely creates vibration levels that exceeds 0.012 in/sec PPV at 50 feet when on a roadway.9 The factors influencing levels of ground-borne vibration include vehicle speed, vehicle suspension, and wheel condition and type. The frequency of vibration events is not listed as an influencing factor for vibration velocity by the FTA.10 As such, multiple trucks traveling along the roadway would increase the frequency of vibration events but would not affect the vibration velocity experienced by sensitive receptors. Impacts would be less than significant.
Operations
Project operations would primarily involve passenger vehicle travel. Operations of the PSC would involve travel of fire trucks. No other vibration-generating activities would occur on site. According to the FTA’s Transit Noise and Vibration Impact Assessment, a heavy truck rarely creates vibration levels that exceeds 0.012 in/sec PPV at 50 feet when on a roadway.11 Due to the rapid drop-off rate of ground-borne vibration and the short duration of the associated events, vehicular traffic-induced ground-borne vibration is rarely perceptible beyond the roadway right-of-way, and rarely results in vibration levels that cause damage to buildings in the vicinity.12 Further, there are no substantial ground borne vibration sources associated with the Project, such as rail or subways. Impacts would be less than significant.
9 Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, September 2018. 10 Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, September 2018. 11 Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, September 2018. 12 Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, September 2018.
Appendix A
Noise Measurement Data
Noise Measurement Field Data
Project: Job Number: 094274010
Site No.: Date: 8/26/2026 - 8/27/2026
Analyst: Time: 11:29 a.m. - 11:29 a.m.
Location:
Noise Sources:
Comments:
Results (dBA):
Leq: Lmin: Lmax: Peak:
50.2 31.7 80.6 101.3
Sound Level Meter: LD SoundExpert LXT Temp. (degrees F):
Calibrator: CAL200 Wind (mph):
Response Time: Slow Sky:
Weighting: A Bar. Pressure (inHg):
Microphone Height: 5 feet Humidity:
Photo:
Equipment Weather
MoVal Public Safety Campus
LT-1
Dharma Truong and James Fong
Corner of Wilmont Street and Brodiaea Avenue
Kimley>»Horn
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Measurement Report
Report Summary
Meter's File NameLT_.007.s Computer's File NameLxTse_0005586-20260826 112939-LT_.007.ldbin Meter LxT SE 0005586 Firmware 2.404
User Location
Job Description
Note
Measurement
Start Time 2026-08-26 11:29:39Duration 24:00:00.0
End Time 2026-08-27 11:29:39Run Time 24:00:00.0Pause Time 0:00:00.0 Pre-Calibration2026-08-25 15:32:34Post-CalibrationNone Calibration Deviation0.0 Results
Overall Metrics
LAeq 50.2 dB
LAE 99.6 dB SEA --- dB
EA 1.0 mPa²h
LApeak 101.3 dB 2026-08-26 11:31:07
LASmax 80.6 dB 2026-08-26 19:01:54
LASmin 31.7 dB 2026-08-27 01:44:38
LAeq 50.2 dB
LCeq 60.7 dB LCeq - LAeq 10.5 dB
LAIeq
53.6 dB LAIeq - LAeq3.4 dB
Exceedances Count Duration
LAS > 85.0 dB 0 0:00:00.0
LAS > 115.0 dB 0 0:00:00.0
LApk > 135.0 dB 0 0:00:00.0
LApk > 137.0 dB 0 0:00:00.0
LApk > 140.0 dB 0 0:00:00.0
Community Noise LDN LDay LNight
52.8 dB 51.8 dB 44.1 dB
LDEN LDay LEve LNight
53.5 dB 52.0 dB 51.0 dB 44.1 dB
Any Data A C Z
Level Time Stamp Level Time Stamp Level Time Stamp
Leq 50.2 dB 60.7 dB --- dB
Ls(max) 80.6 dB 2026-08-26 19:01:54 --- dB None --- dB None LS(min) 31.7 dB 2026-08-27 01:44:38 --- dB None --- dB None LPeak(max) 101.3 dB 2026-08-26 11:31:07 --- dB None --- dB None Overloads Count Duration OBA Count OBA Duration
0 0:00:00.0 0 0:00:00.0
Statistics
LAS 5.0 52.7 dB
LAS 10.0 49.1 dB
LAS 33.3 42.7 dB
LAS 50.0 40.2 dB
LAS 66.6 38.1 dB
LAS 90.0 35.4 dB
40 20
0 12:00 20:00 04:00
16:00 27. Aug 08:00
Ww L -L J —mtddurunLab
— LAeq — LApk — LAS max
Time History 00 Values
1/1 LAeq
1/1 LASmax
16:00 20:00 27. Aug 04:00 08:00
25 dB 50 dB 75 dB
16:00 20:00 27. Aug 04:00 08:00
25 dB 50 dB 75 dB
11 0 dB
11 0 dB
N N N N N N
00 00
Frequency Frequency
00I
N
00I
N
1/1 LASmin
1/3 LAeq
8kHz
l kHz
125Hz
8Hz
12:00 16:00 20:00 27. Aug 04:00 08:00
25 dB 50 dB 75 dB
20kHz
8kHz
1 kHz
100Hz
6.3Hz
12:00 16:00 20:00 27. Aug 04:00 08:00
25 dB 50 dB 75 dB
11 0 dB
n
0 dB
Frequency Frequency
1/3 LASmax
1/3 LASmin
I kHz
100Hz
6.3Hz
12:00 16:00 20:00 27. Aug 04:00 08:00
25 dB 50 dB 75 dB
l kHz
100Hz
6.3Hz
12:00 16:00 20:00 27. Aug 04:00 08:00
25 dB 50 dB 75 dB
__
1 r
20kHz
8kHz
20kHz
8kHz ____________________________________________________________ ________________________________________________________ n
0 dB
n
0 dB
____________________ mmmmimm
Frequency Frequency
Noise Measurement Field Data
Project: Job Number: 094274010
Site No.: Date: 8/26/2026
Analyst: Time: 11:50 a.m. - 12:05 p.m.
Location:
Noise Sources:
Comments:
Results (dBA):
Leq: Lmin: Lmax: Peak:
41.7 35.5 67.7 102.7
Sound Level Meter: LD SoundExpert 821 Temp. (degrees F): 102 Calibrator: CAL1200 Wind (mph): 6
Response Time: Slow Sky: Clear
Weighting: A Bar. Pressure (inHg): 29.85
Microphone Height: 5 feet Humidity: 21%
Photo:
Equipment Weather
MoVal Public Safety Campus
ST-1
Dharma Truong and James Fong
Adjacent to the east of 28850 Brodiaea Avenue
dogs barking, wind chimes, people walking, car door closing |
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SoundExpert 821 Summary: 2026-08-26 16:17:47
User:
Location:
Job Description:
Notes:
Meter General Information
Model Serial
Meter SoundExpert 821 40864
Preamplifier PRM821 002467
Microphone 377B02 370127
Unique File Id 00C:00009FA0:6A8ED323:00005BD6
Overall Measurement
Start Date & Time 2026-08-26 11:50:59
Stop Date & Time 2026-08-26 12:05:59
Run Time 00:15:00
Pre-Calibration
Date/Time 2026-08-13 09:32:18
Calibrator Level (dB) 114.00
Meter Sensitivity (dB re 1V/Pa) -25.86
Post-Calibration
Date/Time ---
Calibrator Level (dB) ---
Meter Sensitivity (dB re 1V/Pa) ---
Sensitivity Delta ---
A C Z
Lweq (dB) 41.7 55.3 75.8
Lwpk (dB) 102.7 100.5 101.9
2026-08-26 12:00:13 2026-08-26 12:00:13 2026-08-26 11:51:50 LwSmin (dB) 35.5 48.9 53.3
2026-08-26 11:56:25 2026-08-26 11:57:35 2026-08-26 11:57:35 LwSmax (dB) 67.7 71.8 94.1
2026-08-26 12:00:13 2026-08-26 11:51:51 2026-08-26 11:51:54 LwFmin (dB) 35.1 47.1 50.7
2026-08-26 11:56:16 2026-08-26 11:56:39 2026-08-26 12:01:24 LwFmax (dB) 76.5 77.2 98.1
2026-08-26 12:00:13 2026-08-26 11:51:50 2026-08-26 11:51:50 LwImin (dB) 36.3 51.2 56.5
2026-08-26 11:56:22 2026-08-26 11:57:32 2026-08-26 11:57:35 LwImax (dB) 81.1 80.5 100.7
2026-08-26 12:00:13 2026-08-26 11:51:50 2026-08-26 11:51:50 w = frequency weighting (A, C or Z)
Community Noise (dB) LDN LDay (07:00-22:00) LNight (22:00-07:00)
41.7 41.7 ---
LDEN LDay (07:00-19:00) LEve (19:00-22:00) LNight (22:00-07:00)
41.7 41.7 --- ---
LCeq - LAeq (dB) 13.6
LAIeq (dB) 54.4
Overload Count 0
Overload Duration 00:00:00
A C Z
Under Range Peak (dB) 50.0 50.0 62.0
Under Range Limit (dB) 24.0 27.0 37.0
Noise Floor (dB) 17.0 18.0 25.0
Ln Percentiles
LAS 5.0 (dB) 40.8
LAS 10.0 (dB) 39.6
LAS 33.3 (dB) 38.2
LAS 50.0 (dB) 37.7
LAS 66.6 (dB) 37.2
LAS 90.0 (dB) 36.4
Exceedances
Count Duration (s)
LAS > 85.0 dB 0 0
LAS > 95.0 dB 0 0
LApk > 135.0 dB 0 0
LApk > 137.0 dB 0 0
LApk > 140.0 dB 0 0
• LARSON DAVIS
A PCB DIVISION
Sound Exposure
SELA (dB) 71.2
EA (Pa²s) 0.0
EA,8h (Pa²s) 0.2
EA,40h (Pa²s) 0.9
EA (Pa²h) 0.0
EA,8h (Pa²h) 0.0
EA,40h (Pa²h) 0.0
Room Acoustics
Measured OBA
Frequency (Hz) 16 31.5 63 125
LAeq (dB)2 14 25 29
Frequency (Hz) 250 500 1k 2k
LAeq (dB) 29 31 38 35
Frequency (Hz) 4k 8k
LAeq (dB) 34 19
Noise Criteria (NC)
NC-37 (1 kHz) Tangency
SIL 35
Room Criteria (RC)
RC-35 (H)
LMF 34.8
Noise Rating (NR)
NR-39 (4 kHz)
NC-37 (1 kHz) RC-35 (H)
100 100
75 75
NC-70
NC-60
Co Co 50 50 NC-50
NC-40
NC-30 25 25
NC-20
0 0
( o V W % fa o V W % %
Frequency (Hz) Frequency (Hz)
NR-39 (4 kHz)
100
75 NR-70
NR-60
Co 50 NR-50
NR-40
NR-30 25
NR-20
0 o V W %
Frequency (Hz)
RC-50
RC-45
RC-40
RC-35
RC-30
RC-25
4°
49 <O <O4°
n<O
o
o
0 o o
Powered by Larson Davis
Time History
140
105
70 lb
35 0 T
11:52
11:54 11:58 12:02
Overall OBA
A-Weighting
140
— LAeq — LApk — Audio
U)
O
D
n
>
11:56 12:00 12:04
■ LAeq LASmin ■ LASmax
i
i
I
I
I
O)
I
■
I
I
I
I
I
■
I
I O)
I
I
I
I
I
I
I
I
I
I O)
I
I ■
O)
COCO
Level (dB)
r
m
■ i
■
।
Noise Measurement Field Data
Project: Job Number: 094274010
Site No.: Date: 8/26/2026
Analyst: Time: 12:14 p.m. - 12:49 p.m.
Location:
Noise Sources:
Comments:
Results (dBA):
Leq: Lmin: Lmax: Peak:
47.2 40.6 66.5 81.9
Sound Level Meter: LD SoundExpert 821 Temp. (degrees F): 103 Calibrator: CAL1200 Wind (mph): 6
Response Time: Slow Sky: Clear
Weighting: A Bar. Pressure (inHg): 29.84
Microphone Height: 5 feet Humidity: 19%
Photo:
Equipment Weather
MoVal Public Safety Campus
ST-2
Dharma Truong and James Fong
Adjacent to the north of 14341 Wilmont Street, along Rose Angel Street car door closing, cars driving along Wilmont Street and Rose Angel Street !
Kimley>»Horn
SoundExpert 821 Summary: 2026-08-27 12:06:14
User:
Location:
Job Description:
Notes:
Meter General Information
Model Serial
Meter SoundExpert 821 40864
Preamplifier PRM821 002467
Microphone 377B02 370127
Unique File Id 00C:00009FA0:6A8ED8A5:00005BE2
Overall Measurement
Start Date & Time 2026-08-26 12:14:29
Stop Date & Time 2026-08-26 12:29:29
Run Time 00:15:00
Pre-Calibration
Date/Time 2026-08-13 09:32:18
Calibrator Level (dB) 114.00
Meter Sensitivity (dB re 1V/Pa) -25.86
Post-Calibration
Date/Time ---
Calibrator Level (dB) ---
Meter Sensitivity (dB re 1V/Pa) ---
Sensitivity Delta ---
A C Z
Lweq (dB) 47.2 62.2 80.6
Lwpk (dB) 81.9 86.7 99.9
2026-08-26 12:24:52 2026-08-26 12:26:12 2026-08-26 12:19:43 LwSmin (dB) 40.6 53.0 59.5
2026-08-26 12:21:23 2026-08-26 12:20:35 2026-08-26 12:20:39 LwSmax (dB) 66.5 76.9 92.9
2026-08-26 12:26:13 2026-08-26 12:26:13 2026-08-26 12:28:42 LwFmin (dB) 40.0 51.4 55.8
2026-08-26 12:21:23 2026-08-26 12:27:07 2026-08-26 12:20:38 LwFmax (dB) 67.9 79.2 96.6
2026-08-26 12:26:12 2026-08-26 12:26:13 2026-08-26 12:28:42 LwImin (dB) 41.4 55.1 63.9
2026-08-26 12:21:23 2026-08-26 12:20:35 2026-08-26 12:20:39 LwImax (dB) 68.9 80.1 98.9
2026-08-26 12:26:12 2026-08-26 12:26:13 2026-08-26 12:28:42 w = frequency weighting (A, C or Z)
Community Noise (dB) LDN LDay (07:00-22:00) LNight (22:00-07:00)
47.2 47.2 ---
LDEN LDay (07:00-19:00) LEve (19:00-22:00) LNight (22:00-07:00)
47.2 47.2 --- ---
LCeq - LAeq (dB) 14.9
LAIeq (dB) 49.7
Overload Count 0
Overload Duration 00:00:00
A C Z
Under Range Peak (dB) 50.0 50.0 62.0
Under Range Limit (dB) 24.0 27.0 37.0
Noise Floor (dB) 17.0 18.0 25.0
Ln Percentiles
LAS 5.0 (dB) 49.0
LAS 10.0 (dB) 44.2
LAS 33.3 (dB) 42.6
LAS 50.0 (dB) 42.3
LAS 66.6 (dB) 42.0
LAS 90.0 (dB) 41.6
Exceedances
Count Duration (s)
LAS > 85.0 dB 0 0
LAS > 95.0 dB 0 0
LApk > 135.0 dB 0 0
LApk > 137.0 dB 0 0
LApk > 140.0 dB 0 0
Sound Exposure
SELA (dB) 76.8
EA (Pa²s) 0.0
EA,8h (Pa²s) 0.6
EA,40h (Pa²s) 3.0
EA (Pa²h) 0.0
EA,8h (Pa²h) 0.0
EA,40h (Pa²h) 0.0
Room Acoustics
Measured OBA
Frequency (Hz) 16 31.5 63 125
LAeq (dB)9 21 30 36
Frequency (Hz) 250 500 1k 2k
LAeq (dB) 39 41 43 39
Frequency (Hz) 4k 8k
LAeq (dB) 31 21
Noise Criteria (NC)
NC-42 (1 kHz) Tangency
SIL 40
Room Criteria (RC)
RC-41 (H)
LMF 41.1
Noise Rating (NR)
NR-43 (1 kHz)
NC-42 (1 kHz) RC-41 (H)
100 100
75 75
NC-70
NC-60
Co Co 50 50 NC-50
NC-40
NC-30 25 25
NC-20
0 0
( o V W % fa o V W % %
Frequency (Hz) Frequency (Hz)
NR-43 (1 kHz)
100
75 NR-70
NR-60
Co 50 NR-50
NR-40
NR-30 25
NR-20
0 o V W %
Frequency (Hz)
RC-50
RC-45
RC-40
RC-35
RC-30
RC-25
4°
49 <O <O4°
n<O
o
o
0 o o
Powered by Larson Davis
Time History
140
105
70 35
0 12:18 12:22 12:26
Overall OBA
A-Weighting
140
109
78 48
17.5 M •__ •__•__•
6.3 63 200 630 2k 20k
1/1
O
□
n
>
■
6.3k
12 16 12:20 12 24 12:28
■ ■ ■ ■ ■
20 ■ LAeq LASmin ■ LASmax
— LAeq — LApk — Audio
Level (dB)
Noise Measurement Field Data
Project: Job Number: 094274010
Site No.: Date: 8/26/2026
Analyst: Time: 12:34 p.m. - 12:49 p.m.
Location:
Noise Sources:
Comments:
Results (dBA):
Leq: Lmin: Lmax: Peak:
62.6 38.3 76.0 92.3
Sound Level Meter: LD SoundExpert 821 Temp. (degrees F): 104 Calibrator: CAL1200 Wind (mph): 6
Response Time: Slow Sky: Clear
Weighting: A Bar. Pressure (inHg): 29.84
Microphone Height: 5 feet Humidity: 19%
Photo:
Equipment Weather
MoVal Public Safety Campus
ST-3
Dharma Truong and James Fong
Corner of Mammoth Drive and Cactus Avenue
cars driving along Cactus Avenue, cars entering and exiting gated community, phone speaker, ooe
11 i
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Kimley»Horn
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j
SoundExpert 821 Summary: 2026-08-27 12:08:26
User:
Location:
Job Description:
Notes:
Meter General Information
Model Serial
Meter SoundExpert 821 40864
Preamplifier PRM821 002467
Microphone 377B02 370127
Unique File Id 00C:00009FA0:6A8EDD4A:00005BEE
Overall Measurement
Start Date & Time 2026-08-26 12:34:18
Stop Date & Time 2026-08-26 12:49:18
Run Time 00:15:00
Pre-Calibration
Date/Time 2026-08-13 09:32:18
Calibrator Level (dB) 114.00
Meter Sensitivity (dB re 1V/Pa) -25.86
Post-Calibration
Date/Time ---
Calibrator Level (dB) ---
Meter Sensitivity (dB re 1V/Pa) ---
Sensitivity Delta ---
A C Z
Lweq (dB) 62.6 68.0 72.0
Lwpk (dB) 92.3 95.2 96.5
2026-08-26 12:48:58 2026-08-26 12:40:09 2026-08-26 12:40:09 LwSmin (dB) 38.3 52.3 57.2
2026-08-26 12:47:05 2026-08-26 12:47:05 2026-08-26 12:37:04 LwSmax (dB) 76.0 81.3 85.6
2026-08-26 12:44:12 2026-08-26 12:37:40 2026-08-26 12:45:20 LwFmin (dB) 37.7 50.8 54.4
2026-08-26 12:47:04 2026-08-26 12:34:36 2026-08-26 12:34:37 LwFmax (dB) 78.1 83.3 88.5
2026-08-26 12:44:12 2026-08-26 12:37:39 2026-08-26 12:45:19 LwImin (dB) 39.6 52.8 59.0
2026-08-26 12:47:06 2026-08-26 12:34:18 2026-08-26 12:37:04 LwImax (dB) 79.6 85.1 91.3
2026-08-26 12:44:12 2026-08-26 12:40:09 2026-08-26 12:45:19 w = frequency weighting (A, C or Z)
Community Noise (dB) LDN LDay (07:00-22:00) LNight (22:00-07:00)
62.6 62.6 ---
LDEN LDay (07:00-19:00) LEve (19:00-22:00) LNight (22:00-07:00)
62.6 62.6 --- ---
LCeq - LAeq (dB) 5.4
LAIeq (dB) 65.7
Overload Count 0
Overload Duration 00:00:00
A C Z
Under Range Peak (dB) 50.0 50.0 62.0
Under Range Limit (dB) 24.0 27.0 37.0
Noise Floor (dB) 17.0 18.0 25.0
Ln Percentiles
LAS 5.0 (dB) 69.9
LAS 10.0 (dB) 67.0
LAS 33.3 (dB) 59.6
LAS 50.0 (dB) 53.8
LAS 66.6 (dB) 49.7
LAS 90.0 (dB) 42.8
Exceedances
Count Duration (s)
LAS > 85.0 dB 0 0
LAS > 95.0 dB 0 0
LApk > 135.0 dB 0 0
LApk > 137.0 dB 0 0
LApk > 140.0 dB 0 0
Sound Exposure
SELA (dB) 92.2
EA (Pa²s) 0.7
EA,8h (Pa²s) 21.2
EA,40h (Pa²s) 105.8
EA (Pa²h) 0.0
EA,8h (Pa²h) 0.0
EA,40h (Pa²h) 0.0
Room Acoustics
Measured OBA
Frequency (Hz) 16 31.5 63 125
LAeq (dB)2 21 37 46
Frequency (Hz) 250 500 1k 2k
LAeq (dB) 52 56 60 54
Frequency (Hz) 4k 8k
LAeq (dB) 44 37
Noise Criteria (NC)
NC-60 (1 kHz) Tangency
SIL 56
Room Criteria (RC)
RC >50 (H)
LMF 56.9
Noise Rating (NR)
NR-60 (1 kHz)
NC-60 (1 kHz) RC >50 (H)
100 100
75 75
NC-70
NC-60
Co Co 50 50 NC-50
NC-40
NC-30 25 25
NC-20
0 0
( o V W % to o V W % %
Frequency (Hz) Frequency (Hz)
NR-60 (1 kHz)
100
75 NR-70
NR-60
Co 50 NR-50
NR-40
NR-30 25
NR-20
0 o V W %
Frequency (Hz)
RC-50
RC-45
RC-40
RC-35
RC-30
RC-25
4°
49 <O <O4°
n<O
o
o
0 o o
Powered by Larson Davis
Time History
140
II
105
MMMUNWWMWMR
70 35
0 T
12:36
12:38 12:42 12:46
Overall OBA
A-Weighting
140
— LAeq — LApk — Audio
U)
O
D
n
>
12 4412:40 12:48
6.3 20 63 200 630 2k 6.3k 20k
■ LAeq LASmin ■ LASmax
1 i
i
i
I
I
I
I
I
I
I
I
I
I
I
■
I
I
I
I
I
I
I
I
I
COCO
Level (dB)
I
I
I
I
Noise Measurement Field Data
Project: Job Number: 094274010
Site No.: Date: 8/26/2026
Analyst: Time: 1:28 p.m. - 1:43 p.m.
Location:
Noise Sources:
Comments:
Results (dBA):
Leq: Lmin: Lmax: Peak:
52.3 47.2 75.1 94.3
Sound Level Meter: LD SoundExpert 821 Temp. (degrees F): 104 Calibrator: CAL1200 Wind (mph): 7
Response Time: Slow Sky: Clear
Weighting: A Bar. Pressure (inHg): 29.82
Microphone Height: 5 feet Humidity: 20%
Photo:
Equipment Weather
MoVal Public Safety Campus
ST-4
Dharma Truong and James Fong
Adjacent to the north of 25173 Dana Lane, along Dana Lane cars driving along Dana Lane, kids talking, car horn, garage door opening PM
1/ /
A 4
— 44.
s
4/.
Kimley»)Horn
.9
SoundExpert 821 Summary: 2026-08-27 12:15:10
User:
Location:
Job Description:
Notes:
Meter General Information
Model Serial
Meter SoundExpert 821 40864
Preamplifier PRM821 002467
Microphone 377B02 370127
Unique File Id 00C:00009FA0:6A8EE9EE:00005BFB
Overall Measurement
Start Date & Time 2026-08-26 13:28:14
Stop Date & Time 2026-08-26 13:43:14
Run Time 00:15:00
Pre-Calibration
Date/Time 2026-08-13 09:32:18
Calibrator Level (dB) 114.00
Meter Sensitivity (dB re 1V/Pa) -25.86
Post-Calibration
Date/Time ---
Calibrator Level (dB) ---
Meter Sensitivity (dB re 1V/Pa) ---
Sensitivity Delta ---
A C Z
Lweq (dB) 52.3 65.0 79.0
Lwpk (dB) 94.3 95.5 104.0
2026-08-26 13:39:06 2026-08-26 13:39:06 2026-08-26 13:35:07 LwSmin (dB) 47.2 56.8 59.7
2026-08-26 13:35:34 2026-08-26 13:42:51 2026-08-26 13:42:30 LwSmax (dB) 75.1 82.2 95.2
2026-08-26 13:39:06 2026-08-26 13:36:27 2026-08-26 13:35:07 LwFmin (dB) 46.8 55.7 58.1
2026-08-26 13:35:42 2026-08-26 13:42:50 2026-08-26 13:42:29 LwFmax (dB) 81.4 84.5 101.0
2026-08-26 13:39:06 2026-08-26 13:36:26 2026-08-26 13:35:07 LwImin (dB) 47.9 58.7 61.7
2026-08-26 13:35:34 2026-08-26 13:43:01 2026-08-26 13:38:56 LwImax (dB) 86.0 85.7 102.7
2026-08-26 13:39:06 2026-08-26 13:39:06 2026-08-26 13:35:07 w = frequency weighting (A, C or Z)
Community Noise (dB) LDN LDay (07:00-22:00) LNight (22:00-07:00)
52.3 52.3 ---
LDEN LDay (07:00-19:00) LEve (19:00-22:00) LNight (22:00-07:00)
52.3 52.3 --- ---
LCeq - LAeq (dB) 12.7
LAIeq (dB) 59.8
Overload Count 0
Overload Duration 00:00:00
A C Z
Under Range Peak (dB) 50.0 50.0 62.0
Under Range Limit (dB) 24.0 27.0 37.0
Noise Floor (dB) 17.0 18.0 25.0
Ln Percentiles
LAS 5.0 (dB) 54.6
LAS 10.0 (dB) 53.9
LAS 33.3 (dB) 49.1
LAS 50.0 (dB) 48.4
LAS 66.6 (dB) 48.0
LAS 90.0 (dB) 47.7
Exceedances
Count Duration (s)
LAS > 85.0 dB 0 0
LAS > 95.0 dB 0 0
LApk > 135.0 dB 0 0
LApk > 137.0 dB 0 0
LApk > 140.0 dB 0 0
• LARSON DAVIS
A PCB DIVISION
Sound Exposure
SELA (dB) 81.8
EA (Pa²s) 0.1
EA,8h (Pa²s) 2.0
EA,40h (Pa²s) 9.8
EA (Pa²h) 0.0
EA,8h (Pa²h) 0.0
EA,40h (Pa²h) 0.0
Room Acoustics
Measured OBA
Frequency (Hz) 16 31.5 63 125
LAeq (dB)7 24 28 44
Frequency (Hz) 250 500 1k 2k
LAeq (dB) 41 43 49 44
Frequency (Hz) 4k 8k
LAeq (dB) 39 32
Noise Criteria (NC)
NC-48 (1 kHz) Tangency
SIL 45
Room Criteria (RC)
RC-46 (H)
LMF 45.6
Noise Rating (NR)
NR-49 (1 kHz)
NC-48 (1 kHz) RC-46 (H)
100 100
75 75
NC-70
NC-60
Co Co 50 50 NC-50
NC-40
NC-30 25 25
NC-20
0 0
( o V W % fa o V W % %
Frequency (Hz) Frequency (Hz)
NR-49 (1 kHz)
100
75 NR-70
NR-60
Co 50 NR-50
NR-40
NR-30 25
NR-20
0 o V W %
Frequency (Hz)
RC-50
RC-45
RC-40
RC-35
RC-30
RC-25
4°
49 <O <O4°
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o
o
0 o o
Powered by Larson Davis
Time History
140
105
70 Jk
x
35 0
13:32 13:36 13:40
Overall OBA
A-Weighting
140
109
78 48
17.5 " R . -i Jliiliiillihiiiiig!
6.3 20 63 200 630 2k 6.3k 20k
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n
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«ki, wRn
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13:30 13:38 13:42 13:34
■ LAeq LASmin ■ LASmax
— LAeq — LApk — Audio
Level (dB)
Appendix B
Construction Noise and Vibration Data
PUBLIC SAFETY CAMPUS - MUFFLERS
Receptor Site Preparation Grading
Building
Construction Paving
Architectural
Coating Maximum
1 1 - Residential 70.4 73.4 69.9 66.3 61.8 73.4
2 2 - Residential 72.5 75.0 71.8 68.1 64.1 75.0
3 3 - Residential 54.9 63.0 54.2 52.6 40.3 63.0
4 4 - Residential 62.3 72.4 68.4 65.0 60.0 72.4
OFF-SITE IMPROVEMENTS - MUFFLERS
Receptor
Grubbing and
Land Clearing
Grading and
Excavation
Drainage,
Utilities, Sub
Grade Paving Maximum
All Receptors 76.6 78.2 79.8 75.0 79.8
CORPORATE YARD - MUFFLERS
Receptor Site Preparation Grading
Building
Construction Demolition Maximum
All Receptors 66.8 68.6 75.0 77.3 77.3
Project: Moreno Valley Public Safety Campus
Construction Noise Impact on Sensitive Receptors
Parameters
Construction Hours: Daytime hours (7 am to 7 pm) 8
Evening hours (7 pm to 10 pm) 0
Nighttime hours (10 pm to 7 am) 0
Leq to L10 factor 3
Receptor (Land Use)
Average
Distance
(feet)
Distance
to
Property
Line (feet) Shielding Direction
1 1 - Residential 640 65 N
2 2 - Residential 650 50 W
3 3 - Residential 1,400 775 W
4 4 - Residential 750 80 S
RECEPTOR 1 RECEPTOR 2 RECEPTOR 3 RECEPTOR 4
Construction Phase Equipment Type
No. of
Equip.
Acoustical
Usage
Factor
Reference
Noise Level at
50ft per Unit,
Lmax
Distance
(feet)
Noise Level
at Receptor 1,
Lmax
Noise Level
at Receptor 1,
Leq
Distance
(feet)
Noise Level
at Receptor 2,
Lmax
Noise Level at
Receptor 2, Leq
Distance
(feet)
Noise Level
at Receptor 3,
Lmax
Noise Level
at Receptor 3,
Leq
Distance
(feet)
Noise Level
at Receptor 4,
Lmax
Noise Level
at Receptor 4,
Leq
Site Preparation
Dozer 1 40% 86 65 83.6 79.6 50 85.9 81.9 775 62.1 58.1 80 81.8 77.8 Dozer 1 40% 86 215 73.2 69.3 200 73.9 69.9 925 60.6 56.6 230 72.6 68.7 Backhoe 1 40% 84 365 67.0 63.1 350 67.4 63.4 1,075 57.7 53.7 380 66.7 62.7 Front End Loader (cyclical) 1 40% 81 515 61.1 57.2 500 61.4 57.4 1,225 53.6 49.6 530 60.9 56.9 Dozer 1 40% 86 665 63.4 59.4 650 63.6 59.6 1,375 57.1 53.1 680 63.2 59.2 Backhoe 1 40% 84 815 60.1 56.1 800 60.2 56.2 1,525 54.6 50.6 830 59.9 55.9 Front End Loader (cyclical) 1 40% 81 965 55.7 51.7 950 55.8 51.8 1,675 50.9 46.9 980 55.6 51.6 Combined LEQ 80.2 82.3 62.5 70.4
Grading
Excavator 1 40% 87 65 85.1 81.1 50 87.4 83.4 775 63.6 59.6 80 83.3 79.3 Grader (passby) 1 40% 77 215 64.6 60.7 200 65.3 61.3 925 52.0 48.0 230 64.0 60.1 Dozer 1 40% 86 365 68.6 64.7 350 69.0 65.0 1,075 59.3 55.3 380 68.3 64.3 Scraper 1 40% 92 515 72.1 68.2 500 72.4 68.4 1,225 64.6 60.6 530 71.9 67.9 Backhoe 1 40% 84 665 61.8 57.8 650 62.0 58.0 1,375 55.5 51.5 680 61.6 57.6 Excavator 1 40% 87 815 63.2 59.2 800 63.3 59.3 1,525 57.7 53.7 830 63.0 59.0 Scraper 1 40% 92 965 66.7 62.7 950 66.8 62.8 1,675 61.9 57.9 980 66.6 62.6 Front End Loader (cyclical) 1 40% 81 1,115 54.4 50.5 1,100 54.6 50.6 1,825 50.2 46.2 1,130 54.3 50.3 Combined LEQ 81.6 83.7 65.5 80.0
Building Construction
Crane 1 16% 79 65 76.7 68.8 50 79.0 71.0 775 55.2 47.2 300 63.4 55.5 Telescopic Handler (Forklift) 1 40% 89 215 76.5 72.6 200 77.2 73.2 925 63.9 59.9 450 70.1 66.1 Generator 1 50% 68 365 51.1 48.1 350 51.5 48.5 1,075 41.8 38.7 600 46.8 43.8 Backhoe 1 40% 84 515 64.0 60.1 500 64.3 60.3 1,225 56.5 52.5 750 60.8 56.8 Welding Machine 1 40% 75 665 52.2 48.2 650 52.4 48.4 1,375 45.9 41.9 900 49.6 45.6 Telescopic Handler (Forklift) 1 40% 89 815 65.0 61.0 800 65.1 61.1 1,525 59.5 55.5 1,050 62.8 58.8 Backhoe 1 40% 84 965 58.6 54.6 950 58.7 54.7 1,675 53.8 49.8 1,200 56.7 52.7 Telescopic Handler (Forklift) 1 40% 89 1,115 62.2 58.3 1,100 62.4 58.4 1,825 58.0 54.0 1,350 60.6 56.6 Front End Loader (cyclical) 1 40% 81 1,115 54.4 50.5 1,100 54.6 50.6 1,825 50.2 46.2 1,350 52.8 48.8 Combined LEQ 74.6 75.7 62.9 68.1
Paving
Paving - Asphalt (Paver + Dump Truck) 1 20% 84 65 81.8 74.8 50 84.1 77.1 775 60.3 53.3 80 80.0 73.0 Pavement Scarifier (Milling Machine) 1 20% 84 215 71.0 64.0 200 71.7 64.7 925 58.4 51.4 230 70.4 63.5 Compactor (roller) 1 20% 83 365 65.8 58.8 350 66.2 59.2 1,075 56.5 49.5 380 65.5 58.5 Paving - Asphalt (Paver + Dump Truck) 1 20% 84 515 63.8 56.9 500 64.1 57.1 1,225 56.3 49.3 530 63.6 56.6 Pavement Scarifier (Milling Machine) 1 20% 84 665 61.2 54.2 650 61.4 54.4 1,375 54.9 47.9 680 61.0 54.0 Compactor (roller) 1 20% 83 815 58.9 51.9 800 59.0 52.0 1,525 53.4 46.4 830 58.7 51.7 Combined LEQ 75.4 77.5 58.0 73.8
Architectural Coating
Compressor 1 40% 68 65 65.8 61.8 50 68.1 64.1 775 44.3 40.3 300 52.5 48.6 Combined LEQ 61.8 64.1 40.3 48.6
Maximum Noise Level 81.6 83.7 65.5 80.0
Source for Ref. Noise Levels: RCNM, 2018
I
I
I
I
I
Project: Moreno Valley Public Safety Campus With Mufflers Construction Noise Impact on Sensitive Receptors
Parameters
Construction Hours: Daytime hours (7 am to 7 pm) 8
Evening hours (7 pm to 10 pm) 0
Nighttime hours (10 pm to 7 am) 0
Leq to L10 factor 3
Receptor (Land Use)
Average
Distance
(feet)
Distance
to
Property
Line (feet) Shielding Direction
1 1 - Residential 640 65 N
2 2 - Residential 650 50 W
3 3 - Residential 1,400 775 W
4 4 - Residential 750 80 S
RECEPTOR 1 RECEPTOR 2 RECEPTOR 3 RECEPTOR 4
Construction Phase Equipment Type
No. of
Equip.
Acoustical
Usage
Factor
Reference
Noise Level at
50ft per Unit,
Lmax
Reference
Noise Level at
50ft per Unit
with Muffler,
Lmax
Distance
(feet)
Noise Level
at Receptor 1,
Lmax
Noise Level
at Receptor 1,
Leq
Distance
(feet)
Noise Level
at Receptor 2,
Lmax
Noise Level at
Receptor 2, Leq
Distance
(feet)
Noise Level
at Receptor 3,
Lmax
Noise Level
at Receptor 3,
Leq
Distance
(feet)
Noise Level
at Receptor 4,
Lmax
Noise Level
at Receptor 4,
Leq
Site Preparation
* Dozer 1 40% 86 76 65 73.6 69.6 50 75.9 71.9 775 52.1 48.1 80 71.8 67.8 * Dozer 1 40% 86 76 215 63.2 59.3 200 63.9 59.9 925 50.6 46.6 230 62.6 58.7 * Backhoe 1 40% 84 74 365 57.0 53.1 350 57.4 53.4 1,075 47.7 43.7 380 56.7 52.7 Front End Loader (cyclical) 1 40% 81 81 515 61.1 57.2 500 61.4 57.4 1,225 53.6 49.6 530 60.9 56.9 * Dozer 1 40% 86 76 665 53.4 49.4 650 53.6 49.6 1,375 47.1 43.1 680 53.2 49.2 * Backhoe 1 40% 84 74 815 50.1 46.1 800 50.2 46.2 1,525 44.6 40.6 830 49.9 45.9 Front End Loader (cyclical) 1 40% 81 81 965 55.7 51.7 950 55.8 51.8 1,675 50.9 46.9 980 55.6 51.6 Combined LEQ 70.4 72.5 54.9 62.3
Grading
* Excavator 1 40% 87 77 65 75.1 71.1 50 77.4 73.4 775 53.6 49.6 80 73.3 69.3 * Grader (passby) 1 40% 77 67 215 54.6 50.7 200 55.3 51.3 925 42.0 38.0 230 54.0 50.1 * Dozer 1 40% 86 76 365 58.6 54.7 350 59.0 55.0 1,075 49.3 45.3 380 58.3 54.3 * Scraper 1 40% 92 92 515 72.1 68.2 500 72.4 68.4 1,225 64.6 60.6 530 71.9 67.9 * Backhoe 1 40% 84 74 665 51.8 47.8 650 52.0 48.0 1,375 45.5 41.5 680 51.6 47.6 * Excavator 1 40% 87 77 815 53.2 49.2 800 53.3 49.3 1,525 47.7 43.7 830 53.0 49.0 * Scraper 1 40% 92 92 965 66.7 62.7 950 66.8 62.8 1,675 61.9 57.9 980 66.6 62.6 Front End Loader (cyclical) 1 40% 81 81 1,115 54.4 50.5 1,100 54.6 50.6 1,825 50.2 46.2 1,130 54.3 50.3 Combined LEQ 73.4 75.0 63.0 72.4
Building Construction
Crane 1 16% 79 79 65 76.7 68.8 50 79.0 71.0 775 55.2 47.2 80 74.9 67.0 * Telescopic Handler (Forklift) 1 40% 89 79 215 66.5 62.6 200 67.2 63.2 925 53.9 49.9 230 65.9 62.0 Generator 1 50% 68 68 365 51.1 48.1 350 51.5 48.5 1,075 41.8 38.7 380 50.8 47.8 * Backhoe 1 40% 84 74 515 54.0 50.1 500 54.3 50.3 1,225 46.5 42.5 530 53.8 49.8 Welding Machine 1 40% 75 75 665 52.2 48.2 650 52.4 48.4 1,375 45.9 41.9 680 52.0 48.0 * Telescopic Handler (Forklift) 1 40% 89 79 815 55.0 51.0 800 55.1 51.1 1,525 49.5 45.5 830 54.8 50.8 * Backhoe 1 40% 84 74 965 48.6 44.6 950 48.7 44.7 1,675 43.8 39.8 980 48.5 44.5 * Telescopic Handler (Forklift) 1 40% 89 79 1,115 52.2 48.3 1,100 52.4 48.4 1,825 48.0 44.0 1,130 52.1 48.1 * Front End Loader (cyclical) 1 40% 81 71 1,115 44.4 40.5 1,100 44.6 40.6 1,825 40.2 36.2 1,130 44.3 40.3 Combined LEQ 69.9 71.8 54.2 68.4
Paving
* Paving - Asphalt (Paver + Dump Truck) 1 20% 84 74 65 71.8 64.8 50 74.1 67.1 775 50.3 43.3 80 70.0 63.0 * Pavement Scarifier (Milling Machine) 1 20% 84 74 215 61.0 54.0 200 61.7 54.7 925 48.4 41.4 230 60.4 53.5 Compactor (roller) 1 20% 83 83 365 65.8 58.8 350 66.2 59.2 1,075 56.5 49.5 380 65.5 58.5 * Paving - Asphalt (Paver + Dump Truck) 1 20% 84 74 515 53.8 46.9 500 54.1 47.1 1,225 46.3 39.3 530 53.6 46.6 * Pavement Scarifier (Milling Machine) 1 20% 84 74 665 51.2 44.2 650 51.4 44.4 1,375 44.9 37.9 680 51.0 44.0 Compactor (roller) 1 20% 83 83 815 58.9 51.9 800 59.0 52.0 1,525 53.4 46.4 830 58.7 51.7 Combined LEQ 66.3 68.1 52.6 65.0
Architectural Coating
Compressor 1 40% 68 68 65 65.8 61.8 50 68.1 64.1 775 44.3 40.3 80 64.0 60.0 Combined LEQ 61.8 64.1 40.3 60.0
Maximum Noise Level 73.4 75.0 63.0 72.4
Source for Ref. Noise Levels: RCNM, 2018
* Reduction assumed for installation of muffler
I
I
Project: Moreno Valley Off-Site Improvements
Construction Noise Impact on Sensitive Receptors
Parameters
Construction Hours: Daytime hours (7 am to 7 pm) 8
Evening hours (7 pm to 10 pm) 0
Nighttime hours (10 pm to 7 am) 0
Leq to L10 factor 3
Receptor (Land Use)
Average
Distance
(feet)
Distance
to
Property
Line (feet) Shielding Direction
1 1 - Residential 30 N
2 2 - Residential 30 W
3 3 - Residential 30 W
4 4 - Residential 30 S
RECEPTOR 1
Construction Phase Equipment Type
No. of
Equip.
Acoustical
Usage
Factor
Reference
Noise Level at
50ft per Unit,
Lmax
Distance
(feet)
Noise Level at
Receptor 1,
Lmax
Noise Level at
Receptor 1,
Leq
Grubbing and Land Clearing
Crawler Tractor All Other Equipment > 5 HP 1 50% 85 30 89.4 86.4 Excavator 1 40% 87 180 76.3 72.3
Excavator 1 40% 87 330 71.0 67.0
Combined LEQ 86.6
Grading and Excavation
Excavator 1 40% 87 30 91.8 87.9
Excavator 2 40% 87 180 79.3 75.3
All Other Equipment > 5 HP 1 50% 85 330 68.6 65.6
Crawler Tractor Grader (passby) 1 40% 77 480 57.7 53.7
Grader (passby) 1 40% 77 630 55.3 51.3
Compactor (roller) 1 20% 83 780 59.2 52.2
Compactor (roller) 1 20% 83 930 57.7 50.7
Backhoe 2 40% 84 1,080 60.6 56.6
Backhoe 2 40% 84 1,080 60.6 56.6
Front End Loader (passby) 1 20% 73 1,080 45.9 38.9
Scraper 1 40% 92 1,080 65.7 61.7
Scraper 1 40% 92 1,080 65.7 61.7
Combined LEQ 88.1
Drainage, Utilities, Sub Grade
Telescopic Handler (Forklift) 1 40% 89 30 93.6 89.7
Backhoe 1 40% 84 180 73.2 69.2
Backhoe 1 40% 84 330 67.9 63.9
Backhoe 1 40% 84 480 64.7 60.7
Grader (passby) 1 40% 77 630 55.3 51.3
Compactor (plate) 1 20% 75 780 50.7 43.7
Scraper 1 40% 92 930 67.0 63.0
Compressor 1 40% 68 1,080 41.4 37.4
Generator 1 50% 68 1,080 41.7 38.7
Combined LEQ 89.7
Paving
Compactor (roller) 1 20% 83 30 87.5 80.5
Compactor (roller) 1 20% 83 180 72.0 65.0
Paving - Asphalt (Paver + Dump Truck) 1 20% 84 330 67.7 60.7 Backhoe 1 40% 84 480 64.7 60.7
Backhoe 1 40% 84 630 62.3 58.3
Backhoe 1 40% 84 780 60.4 56.5
Combined LEQ 80.8
Maximum Noise Level 89.7
Source for Ref. Noise Levels: RCNM, 2018
Project: Moreno Valley Off-Site Improvements With Mufflers Construction Noise Impact on Sensitive Receptors
Parameters
Construction Hours: Daytime hours (7 am to 7 pm) 8
Evening hours (7 pm to 10 pm) 0
Nighttime hours (10 pm to 7 am) 0
Leq to L10 factor 3
Receptor (Land Use)
Distance
to
Property
Line (feet) Shielding Direction
1 1 - Residential 30 N
2 2 - Residential 30 W
3 3 - Residential 30 W
4 4 - Residential 30 S
RECEPTOR 1
Construction Phase Equipment Type
No. of
Equip.
Acoustical
Usage
Factor
Reference
Noise Level at
50ft per Unit,
Lmax
Reference
Noise Level at
50ft per Unit
with Muffler,
Lmax
Distance
(feet)
Noise Level
at Receptor 1,
Lmax
Noise Level
at Receptor 1,
Leq
Grubbing and Land Clearing
Crawler Tractor * All Other Equipment > 5 HP 1 50% 85 75 30 79.4 76.4 * Excavator 1 40% 87 77 180 66.3 62.3
* Excavator 1 40% 87 77 330 61.0 57.0
Combined LEQ 76.6
Grading and Excavation
* Excavator 1 40% 87 77 30 81.8 77.9
* Excavator 2 40% 87 77 180 69.3 65.3
Crawler Tractor * All Other Equipment > 5 HP 1 50% 85 75 330 58.6 55.6 * Grader (passby) 1 40% 77 67 480 47.7 43.7
* Grader (passby) 1 40% 77 67 630 45.3 41.3
Compactor (roller) 1 20% 83 83 780 59.2 52.2
Compactor (roller) 1 20% 83 83 930 57.7 50.7
* Backhoe 2 40% 84 74 1,080 50.6 46.6
* Backhoe 2 40% 84 74 1,080 50.6 46.6
* Front End Loader (passby) 1 20% 73 63 1,080 35.9 28.9 Scraper 1 40% 92 92 1,080 65.7 61.7
Scraper 1 40% 92 92 1,080 65.7 61.7
Combined LEQ 78.2
Drainage, Utilities, Sub Grade
* Telescopic Handler (Forklift) 1 40% 89 79 30 83.6 79.7 * Backhoe 1 40% 84 74 180 63.2 59.2
* Backhoe 1 40% 84 74 330 57.9 53.9
* Backhoe 1 40% 84 74 480 54.7 50.7
* Grader (passby) 1 40% 77 67 630 45.3 41.3
Compactor (plate) 1 20% 75 75 780 50.7 43.7
Scraper 1 40% 92 92 930 67.0 63.0
Compressor 1 40% 68 68 1,080 41.4 37.4
Generator 1 50% 68 68 1,080 41.7 38.7
Combined LEQ 79.8
Paving
* Backhoe 1 40% 84 74 30 78.7 74.8
* Backhoe 1 40% 84 74 180 63.2 59.2
* Paving - Asphalt (Paver + Dump Truck) 1 20% 84 74 330 57.7 50.7 * Backhoe 1 40% 84 74 480 54.7 50.7
Compactor (roller) 1 20% 83 83 630 61.1 54.1
Compactor (roller) 1 20% 83 83 780 59.2 52.2
Combined LEQ 75.0
Maximum Noise Level 79.8
Source for Ref. Noise Levels: RCNM, 2018
* Reduction assumed for installation of muffler
Project: Moreno Valley Public Safety Campus - Corporate Yard Fueling Station Construction Noise Impact on Sensitive Receptors
Parameters
Construction Hours: Daytime hours (7 am to 7 pm) 8
Evening hours (7 pm to 10 pm) 0
Nighttime hours (10 pm to 7 am) 0
Leq to L10 factor 3
Receptor (Land Use)
Distance
to
Property
Line (feet) Shielding Direction
1 1 - Residential 50 N
2 2 - Residential 50 W
3 3 - Residential 50 W
4 4 - Residential 50 S
RECEPTOR 1
Construction Phase Equipment Type
No. of
Equip.
Acoustical
Usage
Factor
Reference
Noise Level at
50ft per Unit,
Lmax
Distance
(feet)
Noise Level at
Receptor 1,
Lmax
Noise Level at
Receptor 1,
Leq
Site Preparation
Grader (passby) 1 40% 77 50 77.3 73.3
Backhoe 1 40% 84 100 78.3 74.3
Combined LEQ 76.8
Grading
Grader (passby) 1 40% 77 50 77.3 73.3
Dozer 1 40% 86 100 79.9 75.9
Backhoe 1 40% 84 150 74.8 70.8
Combined LEQ 78.6
Building Construction
Crane 1 16% 79 50 79.0 71.0
Telescopic Handler (Forklift) 1 40% 89 100 83.2 79.2
Telescopic Handler (Forklift) 1 40% 89 100 83.2 79.2
Backhoe 1 40% 84 150 74.8 70.8
Backhoe 1 40% 84 150 74.8 70.8
Combined LEQ 83.1
Demolition
Dozer 1 40% 86 50 85.9 81.9
Concrete Saw 1 20% 88 100 82.4 75.4
Backhoe 1 40% 84 100 78.3 74.3
Backhoe 1 40% 84 150 74.8 70.8
Combined LEQ 83.6
Maximum Noise Level 83.6
Source for Ref. Noise Levels: RCNM, 2018
Project: Moreno Valley Public Safety Campus - Corporate Yard Fueling Station With Mufflers Construction Noise Impact on Sensitive Receptors
Parameters
Construction Hours: Daytime hours (7 am to 7 pm) 8
Evening hours (7 pm to 10 pm) 0
Nighttime hours (10 pm to 7 am) 0
Leq to L10 factor 3
Receptor (Land Use)
Distance
to
Property
Line (feet) Shielding Direction
1 1 - Residential 50 N
2 2 - Residential 50 W
3 3 - Residential 50 W
4 4 - Residential 50 S
RECEPTOR 1
Construction Phase Equipment Type
No. of
Equip.
Acoustical
Usage
Factor
Reference
Noise Level at
50ft per Unit,
Lmax
Reference
Noise Level at
50ft per Unit
with Muffler,
Lmax
Distance
(feet)
Noise Level
at Receptor 1,
Lmax
Noise Level
at Receptor 1,
Leq
Site Preparation
* Grader (passby) 1 40% 77 67 50 67.3 63.3
* Backhoe 1 40% 84 74 100 68.3 64.3
Combined LEQ 66.8
Grading
* Grader (passby) 1 40% 77 67 50 67.3 63.3
* Dozer 1 40% 86 76 100 69.9 65.9
* Backhoe 1 40% 84 74 150 64.8 60.8
Combined LEQ 68.6
Building Construction
Crane 1 16% 79 79 50 79.0 71.0
* Telescopic Handler (Forklift) 1 40% 89 79 100 73.2 69.2 * Telescopic Handler (Forklift) 1 40% 89 79 100 73.2 69.2 * Backhoe 1 40% 84 74 150 64.8 60.8
* Backhoe 1 40% 84 74 150 64.8 60.8
Combined LEQ 75.0
Demolition
* Dozer 1 40% 86 76 50 75.9 71.9
Concrete Saw 1 20% 88 88 100 82.4 75.4
* Backhoe 1 40% 84 74 100 68.3 64.3
* Backhoe 1 40% 84 74 150 64.8 60.8
Combined LEQ 77.3
Maximum Noise Level 77.3
Source for Ref. Noise Levels: RCNM, 2018
* Reduction assumed for installation of muffler
On-Site Construction Vibration
Receptor Reference
Public Safety
Campus2
Corporate Yard
Fueling Station3
Off-Site
Improvements4
Construction Equipment
Reference PPV (in/sec)
at 25 feet
PPV (in/sec)1
at 100
feet
PPV (in/sec)1 at 50
feet
PPV (in/sec)1
at 35
feet
25 100 50 35
Vibratory compactor/roller 0.210 0.026 0.074 0.127
Large bulldozer 0.089 0.011 0.031 0.054
Loaded trucks 0.076 0.010 0.027 0.046
Small bulldozer 0.003 0.000 0.001 0.002
Structural Damage Threshold5 - 0.2 0.2 0.2
Human Annoyance Threshold5 - 0.4 0.4 0.4
Threshold Exceeded? - No No No
NOTES:
1. calculated using PPV equip = PPVref x (25/D)1.5
where: PPV (equip) = the peak particle velocity of the equipment in in/sec adjusted for the distance PPV (ref) = the reference vibration level in in/sec
D = the distance from the equipment to the receiver
Source: Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, September 2018.
2. Distance measured from the site boundary of the Public Safety Campus to the nearest structure/sensitive receptor.
3. Distance measured from the boundary of the fueling station area to the nearest structure/sensitive receptor.
4. Distance measured from the nearest roadway to the nearest structure/sensitive receptor.
5. Thresholds from Table 4.13-1 of FEIR.
Appendix C
Operational Noise Data
Buildout Operational Noise Calculations
Rooftop Mechanical Equipment
Sensitive Receptor Reference Level (dBA) Reference Distance (feet)1 Distance to Receptor (feet)2 Noise Level at Receptor (dBA) Noise Level at Receptor w/ Sheilding (dBA)3
1 - Residential (N) 52 50 190 40.4 30.4
2 - Residential (W) 52 50 260 37.7 27.7
3 - Residential (W) 52 50 800 27.9 17.9
4 - Residential (S) 52 50 325 35.7 25.7
1. Source: Elliott H. Berger, Rick Neitzel, and Cynthia A. Kladden, Noise Navigator Sound Level Database with Over 1700 Measurement Values , July 6, 2010.
2. Distance based on location of proposed buildings shown on site diagram.
3. Noise levels assume a 10 dBA reduction provided by sheilding of rooftop mechanical equipment by enclosures and architectural elements Parking Lot Activity
Sensitive Receptor Reference Level (dBA) Reference Distance (feet)1 Distance to Receptor (feet)2 Noise Level at Receptor (dBA) Noise Level at Receptor w/ Sheilding (dBA)3
1 - Residential (N) 63 50 120 55.4 45.4
2 - Residential (W) 63 50 100 57.0 47.0
3 - Residential (W) 63 50 800 38.9 28.9
4 - Residential (S) 63 50 180 51.9 41.9
1. Source: Kariel, H. G., Noise in Rural Recreational Environments , Canadian Acoustics 19(5), 3-10, 1991.
2. Distance based on location of parking shown on site diagram.
3. Noise levels assume a 10 dBA reduction provided by sheilding of parking lots by perimeter walls.
Kennel Noise
Sensitive Receptor Reference Level (dBA) Reference Distance (feet)1 Distance to Receptor (feet)2 Noise Level at Receptor (dBA) Noise Level at Receptor w/ Sheilding (dBA)3
1 - Residential (N) 85.0 3.3 780 37.5 27.5
2 - Residential (W) 85.0 3.3 370 44.0 34.0
3 - Residential (W) 85.0 3.3 1060 34.9 24.9
4 - Residential (S) 85.0 3.3 330 45.0 35.0
1. Source: Elliott H. Berger, Rick Neitzel, and Cynthia A. Kladden, Noise Navigator Sound Level Database with Over 1700 Measurement Values , July 6, 2010.
2. Distance based on location of kennels shown on site diagram.
3. Noise levels assume a 10 dBA reduction provided by sheilding of outdoor kennels by Project buildings and perimeter walls.
Drone
Sensitive Receptor Reference Level (dBA) Reference Distance (feet)1 Distance to Receptor (feet)2 Noise Level at Receptor w/o Sheilding (dBA)
Noise Level at Receptor w/
Sheilding (dBA)3
1 - Residential (N) 79 3.3 190 43.8 33.8
2 - Residential (W) 79 3.3 260 41.1 31.1
3 - Residential (W) 79 3.3 1,050 28.9 18.9
4 - Residential (S) 79 3.3 1,100 28.5 18.5
2. Assumes drones would be located on the police station rooftop. Distance based on location of proposed police station location shown on site diagram.
3. Noise levels assume a 10 dBA reduction provided by shielding of drone launch area by Project buildings and perimeter walls Calculated using the inverse square law formula for sound attenuation: dBA2 = dBA1+20Log(d1/d2), where dBA2 = estimated noise level at receptor; dBA1 = reference noise level; d1 = reference distance; d2 = receptor location distance
1. Source: International Journal of Environmental Research and Public Health. 2021 Dec 25; 19(1):223, A Conceptual Framework Proposal for a Noise Modelling Service for Drones in U-Space Architecture, 2022. https://pmc.ncbi.nlm.nih.gov/articles/PMC8750543/pdf/ijerph-19-00223.pdf. Measured maximum noise level of 79 dB at 1 meter for Professional Drone.
Composite Noise - Day
Sensitive Receptor
Rooftop
Mechanical
Equipment
Parking Lot
Activity Kennel Noise Drone
Combined Noise
at Receptor
(dBA)
Ambient
(dBA)1
Ambient +
Operational (dBA) MC Daytime
Standard2
Exceed Nighttime
Standard?
Incremental
Increase
(dBA)
Incremental
Increase
Threshold (dBA)3
Exceed
Incremental
Increase
Threshold?
1 - Residential (N) 30.4 45.4 27.5 33.8 45.9 41.7 47.3 60 No N/A N/A N/A 2 - Residential (W) 27.7 47.0 34.0 31.1 47.3 47.2 50.3 60 No N/A N/A N/A 3 - Residential (W) 17.9 28.9 24.9 18.9 30.9 47.2 47.3 60 No N/A N/A N/A 4 - Residential (S) 25.7 41.9 35.0 18.5 42.8 62.6 62.6 60 N/A 0.0 5.0 No 1 - Ambient noise measurements are taken by Kimley-Horn on August 26, 2026. Based on long term measurement taken at the project site, the nighttime ambient levels are approximatley 7 dBA lower than dayttime. A 7 dBA reduction has been taken from representative daytime measurements. 2 - Pursuant to Moreno Valley Municipal Code Section 11.80.030(c) - Table 11.80.030, exterior noise levels during daytime hours is limited to 60 dBA 3 - Where existing amibent levels exceed the 60 dBA daytime standard, an incremental increase threshold of 5 dBA has been applied.
Composite Noise - Night
Sensitive Receptor
Rooftop
Mechanical
Equipment
Parking Lot
Activity Kennel Noise Drone
Combined Noise
at Receptor
(dBA)
Ambient
(dBA)1
Ambient +
Operational (dBA) MC Nighttime
Standard2
Exceed Nighttime
Standard?
Incremental
Increase
(dBA)
Incremental
Increase
Threshold (dBA)3
Exceed
Incremental
Increase
Threshold?
1 - Residential (N) 30.4 45.4 27.5 33.8 45.9 34.7 46.2 55 No N/A N/A N/A 2 - Residential (W) 27.7 47.0 34.0 31.1 47.3 40.2 48.1 55 No N/A N/A N/A 3 - Residential (W) 17.9 28.9 24.9 18.9 30.9 40.2 40.7 55 No N/A N/A N/A 4 - Residential (S) 25.7 41.9 35.0 18.5 42.8 55.6 55.8 N/A N/A 0.2 5.0 No 1 - Ambient noise measurements are taken by Kimley-Horn on August 26, 2026. Based on long term measurement taken at the project site, the nighttime ambient levels are approximately 7 dBA lower than daytime. A 7 dBA reduction has been taken from representative daytime measurements. 2 - Pursuant to Moreno Valley Municipal Code Section 11.80.030(c) - Table 11.80.030, exterior noise levels during nighttime hours is limited to 55 dBA 3 - Where existing amibent levels exceed the 55 dBA nighttime standard, an incremental increase threshold of 5 dBA has been applied.