Noise Analysis for the
Montiel Road Office Project
San Marcos, California
Prepared for
City of San Marcos
Development Services Department
Planning Division
1 Civic Center Drive
San Marcos, CA 92069
Prepared by
RECON Environmental, Inc.
1927 Fifth Avenue
San Diego, CA 92101
P 619.308.9333
RECON Number 9257
August 21, 2019
Jessica Fleming, Environmental Analyst
Noise Analysis
Montiel Road Office Project
i
TABLE OF CONTENTS
Acronyms.................................................................................................................... iii Executive Summary ................................................................................................... 1
1.0 Introduction ..................................................................................................... 2
1.1 Project Description ............................................................................................. 2
1.2 Fundamentals of Noise ....................................................................................... 6
2.0 Applicable Noise Standards .......................................................................... 7
2.1 General Plan ....................................................................................................... 7
2.2 Municipal Code ................................................................................................... 8
2.3 California Green Building Standards Code – Environmental Comfort ............ 9
3.0 Existing Conditions......................................................................................... 9
4.0 Analysis Methodology ................................................................................... 12
4.1 Construction Noise Analysis ............................................................................ 12
4.2 Traffic Noise Analysis ...................................................................................... 13
4.3 On-site Generated Noise Analysis ................................................................... 15
5.0 Future Acoustical Environment and Impacts......................................... 15
5.1 Construction Noise ........................................................................................... 15
5.2 Traffic Noise ..................................................................................................... 16
5.3 On-site Generated Noise .................................................................................. 20
6.0 Conclusions ..................................................................................................... 21
6.1 Construction Noise ........................................................................................... 21
6.2 Traffic Noise ..................................................................................................... 23
6.3 On-site Generated Noise .................................................................................. 23
7.0 References Cited ............................................................................................ 24
FIGURES
1: Regional Location .......................................................................................................... 3 2: Project Location on Aerial Photograph ......................................................................... 4 3: Site Plan ........................................................................................................................ 5 4: Noise Measurement Locations .....................................................................................11 5: Construction Noise Contours .......................................................................................17 6: Vehicle Traffic Noise Contours ....................................................................................19 7: On-site Generated Noise Contours ..............................................................................22 Noise Analysis
Montiel Road Office Project
ii
TABLE OF CONTENTS (cont.)
TABLES
1: Interior and Exterior Noise Guidelines ........................................................................ 8 2: Municipal Code Property Line Noise Standards .......................................................... 9 3: Noise Measurements ....................................................................................................10 4: 15-minute Traffic Counts .............................................................................................10 5: Typical Construction Equipment Noise Levels ...........................................................12 6: Traffic Parameters .......................................................................................................14 7: Future Vehicle Traffic Parameters ..............................................................................14 8: Construction Noise Levels ...........................................................................................16 9: Future Vehicle Traffic Noise Levels ............................................................................18 10: Traffic Noise Level with and without Project and Ambient Noise Increases .............20 11: HVAC Noise Levels at Adjacent Properties ................................................................21
ATTACHMENTS
1: Noise Measurement Data
2: Tran Model T/YSCE120ED Specifications
3: SoundPLAN Data – Construction Noise
4: SoundPLAN Data – On-Site Traffic Noise
5: FHWA RD-77-108 – Off-Site Traffic Noise
6: SoundPLAN Data – On-Site Generated Noise
Noise Analysis
Montiel Road Office Project
iii
Acronyms
ADT average daily traffic
CALGreen California Green Building Standards
Caltrans California Department of Transportation
City City of San Marcos
CNEL community noise equivalent level
dB decibel
dB(A) A-weighted decibel
FHWA Federal Highway Administration
HVAC heating, ventilating, and air conditioning
L90 noise level exceeded 90 percent of the time
Leq one-hour equivalent noise level
Lmax maximum noise level
LOS Level of Service
Lpw sound power level
SR-78 State Route 78
Noise Analysis
Montiel Road Office Project
Executive Summary
The Montiel Road Office Project (project) site is located at 2355 and 2375 Montiel Road within the Richland Community Plan area of San Marcos , California. The approximately
2.6-acre project site is currently developed with two single- family dwelling units. The proposed project would demolish the e xisting on-site uses and construct a 32,971 -square- foot two-story office building and parking.
This report discusses potential noise impacts from the construction and operation of the project. As part of this assessment, noise levels due to vehicle traffic were calculated and evaluated against City of San Marcos (City) noise and land use compatibility guidelines. In addition to compatibility, the potential for noise to impact adjacent uses from future on-site sources and construction activity was assessed. A summary of the findings is provided below.
Construction Noise
Construction activity is regulated by the City Municipal Code, which limits noise by restricting construction activities to hours unlikely to impact the community. Noise associated with the grading, building, and paving for the project would potentially result in short-term impacts to surrounding residential properties. Construction noise levels would range from 60 to 75 A-weighted decibels equivalent noise level [ dB(A) Leq] at the adjacent properties. Construction activities would generally occur over the period between 7:00 a.m. and 6:00 p.m. on weekdays. Although the existing adjacent uses would be exposed to construction noise levels that may be heard above ambient conditions, the exposure w ould be temporary and would not exceed 75 dB(A) L eq. As construction activities associated with the project would comply with Section 10.24.020 (b)(9) of the City Municipal Code , temporary increases in noise levels from construction activities would be les s than significant.
Traffic Noise
The additional vehicle trips associated with the project would increase noise levels on nearby roadways. A noise increase of 3 dB or more would be considered significant because 3 dB is the level at which an increase in no ise is perceptible to a person. However, the project would not generate enough trips to result in a direct or cumulative noise increase of more than 3 dB. Therefore, the project would result in less than significant direct and cumulative impacts related to traffic noise.
The main source of noise at the project site is vehicle traffic on State Route 78 and Montiel Road. Exterior noise levels were modeled at the project site to determine compatibility with City standards. The applicable standards for office uses are an exterior noise level of 65 community noise equivalent level ( CNEL) and an interior noise level of 50 CNEL. The project’s exterior useable spaces include the outdoor seating area at the northeast corner of the proposed building and the second -floor deck located above the building entrance. As calculated in this analysis, noise levels at the exterior seating area (Receivers 1 through 3) Noise Analysis
Montiel Road Office Project
would range from 54 to 63 CNEL and noise levels at the second -floor deck above the building entrance (Receiver 12) would be 58 CNEL. These noise levels at the exterior use areas would be compatible with the City’s standard of 65 CNEL.
Exterior noise levels at the building façade are projected to range from 54 to 77 CNEL. The interior noise level standard is 50 CNE L. According to the F ederal Highway Administration, masonry and concrete buildings with double -pane windows, which are typically required to meet Title 24 energy code requirements, provide a 35 dB(A) reduction at interior locations from exterior noise sour ces ( Federal Highway Administration 2011).
Based on these standards, interior noise levels would be reduced to 50 CNEL or less.
On-site Generated Noise
The noise sources on the project site after completion of construction are anticipated to be those that would be typical of any office use, such as vehicles arriving and leaving and landscape maintenance machinery. None of these noise sources are anticipated to violate the Municipal Code. Rooftop heating, ventilating, and air conditioning noise levels were modeled at the property line adjacent properties . As shown, on -site generated noise levels would range from 32 to 40 dB(A) L eq at the adjacent properties . Noise levels would not exceed the applicable Noise Ordinance limits at the property lines.
1.0 Introduction
1.1 Project Description
The Montiel Road Office project (project) is located in the city of San Marcos, California, north of SR -78 along Montiel Road at 2355 and 2375 Montiel Road on Assessor’s Parcel Numbers 228- 370-2000 and 228- 370-3900. The proje ct site is bounded by existing development to the east and west, and by Montiel Road to the north and SR-78 to the south.
The approximately 2.6 -acre project site is currently developed with two single- family dwelling units. Single-family residential uses are located north and northeast of the project site, and commercial uses are located west/northwest and east/southeast of the project site.
Figure 1 shows the regional location of the project. Figure 2 shows an aerial photograph of the project and vicinity.
The proposed project would demolish the existing on -site uses and construct a 32,971- square-foot two-story office building and parking. Figure 3 shows the proposed site plan.
The first floor would consist of 15,712 square feet, complete with a lobby, a “c afé” area with outdoor seating, bathrooms, mechanical and elevator areas, and three individual office areas available for lease. The second floo r would consist of 17,252 square feet, complete with four individual office areas available for lease, bathroom, and mechanical and elevator areas. The second floor would also contain an outdoor deck area above the main entrance to the building.
FIGURE 1
Regional Location
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San Marcos
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San Diego
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STATION
MIRAMAR
USMC AIR
STATION
MIRAMAR
Daley Ranch
L
os Penasquitos
Canyon Presv
Mission Trails
Regional
Park
Cleveland NF
Lake Wohlford
Batiquitos Lagoon
Lake Hodges
El Capitan
Reservoir
San Vicente
Reservoir
Sweetwater
Reservoir
S
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Di e g u i t o
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S a
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R i v e r
Jamul Indian
Village
San
Pasqual
Reservation
Rincon Reservation
Sycuan
Reservation
La Jolla Reservation
Barona
Reservation
Valley Center
B
ostonia
Casa
de Oro-Mount
Helix
Crest
Fairbanks
Ranch
Granite Hills
Harbison
Canyon
Hidden
Meadows
Jamul
Lake
San Marcos
Lakeside
La Presa
Ramona
Rancho
San Diego
Rancho
Santa Fe
Spring
Valley
Winter Gardens
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UV54
UV56
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UV75
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Carlsbad
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Coronado
Del
Mar
El Cajon
Encinitas
Escondido
La
Mesa
Lemon
Grove
National City
Oceanside
Poway
San Diego
San Marcos
Santee
Solana
Beach
Vista
0 5Miles [
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RIVERSIDE
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FIGURE 2
Project Location on Aerial Photograph
DEO
DAR RD
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RD
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Image Source: Nearmap (flown June 2019)
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M:\JOBS5\9257\common_gis\fig2_nos.mxd 8/21/2019 bma FIGURE 3
Site Plan
MONTIEL RD
UV78
MONTIEL RD
UV78
Image Source: Nearmap (flown June 2019)
0 100Feet [
Project Boundary
Site Plan Line
M:\JOBS5\9257\common_gis\fig3_nos.mxd 8/21/2019 bma Noise Analysis
Montiel Road Office Project
On-site surface parking would be configured in order to accommodate the proposed buildings, resulting in a total of 185 parking stalls, for a ratio of 5.6 spaces per 1,000 square feet of office space, which would be consistent with the requirements set forth in the San Marcos Code Chapter 20.340, Off-Street Parking and Loading requirements.
1.2 Fundamentals of Noise
Sound le vels are described in units called the decibel (dB). Decibels are measured on a logarithmic scale that quantifies sound intensity in a manner similar to the Richter scale used for earthquake magnitudes. Thus, a doubling of the energy of a noise source, suc h as doubling of traffic volume, would increase the noise level by 3 dB; a halving of the energy would result in a 3 dB decrease. However, human perception of noise has no simple correlation with acoustical energy. A change in noise levels is generally per ceived as follows: 3 A -weighted dB [dB(A)] barely perceptible, 5 dB(A) readily perceptible, and 10 dB(A) perceived as a doubling or halving of noise (California Department of Transportation 2013).
In technical terms, sound levels are described as either a “sound power level” or a “sound pressure level,” which while commonly confused , are two distinct characteristics of sound.
Both share the same unit of measure, the dB. However, sound power, expressed as L pw, is the energy converted into sound by the source. As sound energy travels through the air, it creates a sound wave that exerts pressure on receivers such as an eardrum or microphone, the sound press ure level. Sound measurement instruments only measure sound pressure, and limits used in standards are generally sound pressure levels.
The human ear is not equally sensitive to all frequencies within the sound spectrum. To accommodate this phenomenon, the A-scale, which approximates the frequency response of the average young ear when listening to most ordinary everyday sounds, was devised.
When people make relative judgments of the loudness or annoyance of a sound, their judgments correlate well with the A-scale sound levels of those sounds. Therefore, the “A - weighted” noise scale is used for measurements and standards involving the human perception of noise. Noise levels using A -weighted measurements are designated with the notation dB(A).
1.2.1 Descriptors
The impact of noise is not a function of loudness alone. The time of day when noise occurs and the duration of the noise are also important. In addition, most noise that lasts for more than a few seconds is variable in its intensity. Consequently, a variety of noise descriptors has been developed. The noise descriptors used for this study are the equivalent noise level (L
eq) and the community noise equivalent level (CNEL).
The L eq is the equivalent steady -state noise level in a stated period of time th at is calculated by averaging the acoustic energy over a time period; when no period is specified, a 1-hour period is assumed.
Noise Analysis
Montiel Road Office Project
The CNEL is a 24-hour equivalent sound level. The CNEL calculation applies an additional 5 dB(A) penalty to noise occurring during evening hours, between 7:00 p.m. and 10:00 p.m., and a 10 dB(A) penalty is added to noise occurring during the night, between 10:00 p.m. and 7:00 a.m. These increases for certain times are intended to account for the added sensitivity of humans to noise during the evening and night.
1.2.2 Propagation
Sound from a localized source (approximating a “point” source) radiates uniformly outward as it travels away from the source in a spherical pattern, known as geometric spreading.
The sound level decreases or drops off at a rate of 6 dB(A) for each doubling of the distance.
Traffic noise is not a single, stationary point source of sound. The movement of vehicles makes the source of the sound appear to emanate from a line (line source) rather than a point when viewed over some time interval. The drop-off rate for a line source is 3 dB(A) for each doubling of distance.
The propagation of noise is also affected by the intervening ground, known as ground absorption. A hard site (such as parking lots or smooth b odies of water) receives no additional ground attenuation, and the changes in noise levels with distance (drop -off rate) are simply the geometric spreading of the source. A soft site (such as soft dirt, grass, or scattered bushes and trees) provides an additional ground attenuation value of 1.5 dB(A) per doubling of distance. Thus, a point source over a soft site would drop off at 7.5 dB(A) per doubling of distance.
2.0 Applicable Noise Standards
2.1 General Plan
The Noise Element of the City of San Marcos (City) General Plan provides land use compatibility guidelines to ensure that new developments are sited, designed, and constructed in such a manner that ambient noise levels would not create an unacceptable noise environment for the occupants and patrons of the new development. Table 1 provides the interior and exterior noise guidelines for various types of uses and developments.
The project proposes an office development. As shown in Table 1, the applicable standards for office uses are an exterior noise level of 65 CNEL and an interior noise level of 50 CNEL. The exterior noise level standard is applicable at the proposed exterior use areas.
For the proposed project, this includes the outdoor seating area at the northeast corner of the proposed building and the second-floor deck located above the building entrance.
Noise Analysis
Montiel Road Office Project
Table 1
Interior and Exterior Noise Guidelines
Land Use
Maximum Noise Level
(CNEL)
Interior1 Exterior2,3
Residential – single-family, mobile homes, or age-restricted housing 45 60 Residential – multi-family residences or mixed use 45 65 Lodging – hotels, motels 45 65
Schools, churches, hospitals, residential care facility, child-care facilities 50 65 Passive recreational parks, nature preserves, contemplative spaces, cemeteries -- 65
Active parks, golf courses, athletic fields, outdoor spectator sports, water recreation -- 65
Office/professional, government, medical/dental, commercial, retail, laboratories 50 65
Industrial, manufacturing, utilities, agriculture, mining, stables, ranching, warehouse, maintenance/repair -- 65
SOURCE: City of San Marcos General Plan Update, Noise Element 2013.
CNEL – community noise equivalent level.
1Applies only to interior habitable rooms.
2Exterior noise standard does not apply for land uses where no exterior use area is proposed or necessary, such as a library.
3For single-family detached dwelling units, “exterior noise level” is defined as the noise level measured at an outdoor living area that adjoins and is on the same lot as the dwelling.
2.2 Municipal Code
2.2.1 Title 10, Chapter 10.24 – Construction
Section 10.24.020 (b)(9) of the City Municipal Code identifies permissible hours for general construction activities. Excluding City holidays, construction may occur weekdays from 7:00 a.m. to 6:00 p.m. or Saturdays from 8:00 a.m. to 5:00 p.m. Grading is often the loudest phase of construction. Section 17.32.180 restricts grading and earthworks activities to between the hours of 7:00 a.m. and 4:30 p.m., Monday through Friday.
2.2.2 Title 20 – Zoning Ordinance
City Municipal Code Title 20 – Zoning Ordinance contains General Development Standards. Performance standards in Section 20.300.070 (f) set restrictions on noise levels by zoning. No person shall create or allow the creation of exterior noise tha t causes the noise level to exceed the noise standards shown in Table 2.
Noise Analysis
Montiel Road Office Project
Table 2
Municipal Code Property Line Noise Standards
Zone Time
Allowable Property
Line Noise Level
[dB(A) Leq]
Single-Family Residential (A, R-1, R-2) 7:00 a.m. to 10:00 p.m. 10:00 p.m. to 7:00 a.m.
60 50
Multi-Family Residential (R-3) 7:00 a.m. to 10:00 p.m.
10:00 p.m. to 7:00 a.m.
65 55
Commercial (C, O-P, SR) 7:00 a.m. to 10:00 p.m.
10:00 p.m. to 7:00 a.m.
60 55
Industrial 7:00 a.m. to 10:00 p.m.
10:00 p.m. to 7:00 a.m.
65 60
SOURCE: Section 20.300.070(f) Table 20.300-4, San Marcos Municipal Code Title 20 – Zoning Code dB(A) Leq = A-weighted decibels equivalent noise level
As discussed, the project site is bordered by single- family residential and commercial uses.
The standards at the property line located between the project site and the adjacent single- family residential properties are 60 dB(A) Leq from 7:00 a.m. to 10:00 p.m. and 50 dB(A) Leq from 10:00 p.m. to 7:00 a.m. The standards at the property line located between th e project site and the adjacent commercial properties are 60 dB(A) Leq from 7:00 a.m. to 10:00 p.m. and 55 dB(A) Leq from 10:00 p.m. to 7:00 a.m.
2.3 California Green Building Standards Code –
Environmental Comfort
For nonresidential structures, Title 24, Chapter 12, Section 1207.5 refers to 2016 California Green Building Standards (CALGreen), Chapter 5 – Nonresidential Mandatory Measures, Division 5.5 – Environmental Quality, Section 5.507 – Environmental Comfort, Subsection 5.507.4 – Acoustical Control. P ursuant to these standards, all nonresidential building construction shall employ building assemblies and components that achieve a composite sound transmission class rating of at least 50 or shall otherwise demonstrate that exterior noise shall not result in interior noise environment where noise levels exceed 50 A-weighted equivalent decibels [dB(A) L
eq] in occupied areas during any hour of
operation (24 California Code of Regulations [CCR] 1207.5 2016).
3.0 Existing Conditions
Existing noise levels in the vicinity of the project site were measured on January 9, 2019 , using two Larson-Davis Model LxT, Type 1 Integrating Sound Level Meters, serial numbers 3827 and 3828. The following parameters were used:
Filter: A-weighted
Response: Slow
Interval Period 1 minute
Time History Period: 5 seconds
Noise Analysis
Montiel Road Office Project
The meter was calibrated before and after each measurement. The meter was set 5 feet above the ground level for each measurement.
Noise measurements were taken to obtain typical ambient noise levels at the projec t site and in the vicinity. The weather was sunny and cool with a slight breeze, zero to five miles per hour on average. Two 15-minute measurements were taken, as described below. The primary sources of on -site noise were due to traffic on area roadways in cluding SR-78 and Montiel Road . The measurement locations are shown on Figure 4 , and detailed data is contained in Attachment 1.
Measurement 1 was located near the southern project boundary, 50 feet northeast of SR-78.
Noise levels were measured for 15 minutes. The main noise source at this location was vehicle traffic on SR -78. Secondary sources of noise included occasional noise from the industrial park south of SR -78. Vehicle traffic on SR -78 was counted during the measurement period. The average measured noise level was 71.4 dB(A) Leq.
Measurement 2 was located near the northern project boundary, approximately 50 feet southwest of Montiel Road . Noise levels were measured for 15 minutes. The main noise source at this location was vehicle traffic on Monti el Road . Secondary sources of noise included vehicle traffic on SR -78. Vehicle traffic on Montiel Road was counted during the measurement period. The average measured noise level was 60.3 dB(A) Leq.
Noise measur ements are summarized in Table 3 . Traffic cou nts conducted during Measurements 1 and 2 are summarized in Table 4.
Table 3
Noise Measurements
Measurement Location Time Noise Sources Leq L90
1 50 feet northeast of SR-78 11:12 a.m. – 11:27 a.m. SR-78 71.4 69.0 2 50 feet southwest of
Montiel Road 10:09 a.m. – 10:24 a.m. Montiel Road
and SR-78 60.3 56.8
L90 = Noise level exceeded 90 percent of the time.
Note: Noise measurement data is contained in Attachment 1.
Table 4
15-minute Traffic Counts
Measurement Roadway Direction Autos
Medium
Trucks
Heavy
Trucks Buses Motorcycles
1 SR-78 Westbound 1,032 42 35 2 0
Eastbound 1,299 33 42 0 4
2 Montiel
Road
Westbound 32 1 0 0 0
Eastbound 27 0 0 0 2
FIGURE 4
Noise Measurement Locations
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Project Boundary
M:\JOBS5\9257\common_gis\fig4_nos.mxd 8/21/2019 bma Noise Analysis
Montiel Road Office Project
4.0 Analysis Methodology
4.1 Construction Noise Analysis
Project construction noise wo uld be generated by diesel engine-driven construction equipment used for demolition, site prep aration and grading, building construction, loading, unloading, and placing materials and paving. Diesel engine-driven trucks also would bring materials to the site and remove the soils from excavation.
Construction equipment with a diesel engine typically generates maximum noise levels from 70 and 95 dB(A) L
max at a distance of 50 feet (Federal Highway Administration [FHWA] 2006). Table 5 summarizes typical construction equipment noise levels.
Table 5
Typical Construction Equipment Noise Levels
Equipment
Noise Level at 50 Feet
[dB(A) Leq]
Typical Duty
Cycle
Auger Drill Rig 85 20%
Backhoe 80 40%
Blasting 94 1%
Chain Saw 85 20%
Clam Shovel 93 20%
Compactor (ground) 80 20%
Compressor (air) 80 40%
Concrete Mixer Truck 85 40%
Concrete Pump 82 20%
Concrete Saw 90 20%
Crane (mobile or stationary) 85 20%
Dozer 85 40%
Dump Truck 84 40%
Excavator 85 40%
Front End Loader 80 40%
Generator (25 kilovolt amps or less) 70 50%
Generator (more than 25 kilovolt amps) 82 50%
Grader 85 40%
Hydra Break Ram 90 10%
Impact Pile Driver (diesel or drop) 95 20%
In situ Soil Sampling Rig 84 20%
Jackhammer 85 20%
Mounted Impact Hammer (hoe ram) 90 20%
Paver 85 50%
Pneumatic Tools 85 50%
Pumps 77 50%
Rock Drill 85 20%
Roller 74 40%
Scraper 85 40%
Tractor 84 40%
Vacuum Excavator (vac-truck) 85 40%
Vibratory Concrete Mixer 80 20%
Vibratory Pile Driver 95 20%
SOURCE: FHWA 2006.
dB(A) Leq = A-weighted decibels average noise level
Noise Analysis
Montiel Road Office Project
Construction equipment would generate maximum noise levels between 70 and 95 dB(A) Lmax at 50 feet from the source when in operat ion. During excavation, grading, and paving operations, equipment moves to different loca tions and goes through varying load cycles, and there are breaks for the operators and for non-equipment tasks, such as measurement.
Average construction noise levels were calcul ated for the simultaneous operation of three common pieces of construction equipment: backhoe, excavator, and loader. The usage factors were applied to the maximum noise level at 50 feet for each piece of equipment, and then noise levels were adde d logarithmically. Hourly aver age noise levels would be approximately 83 dB(A) L
eq at 50 feet from the center of construction activity when assessing three pieces of common construction equipment working simultaneously.
4.2 Traffic Noise Analysis
4.2.1 On-Site Traffic Noise
Noise generated by future traffic was modele d using SoundPLAN Essential, version 3.0.
The SoundPLAN program (Navcon Engineering 2015) uses the FHWA Traffic Noise Model algorithms and reference levels to calculate nois e levels at selected receiver locations. The model uses various input parameters, such as projected hourly average traffic rates; vehicle mix, distribution, and speed; roadway lengths and gradients; distances between sources, barriers, and receivers; and shielding provided by intervening terrain, barriers, and structures. Receivers, roadways, and barrier s were input into the model using three- dimensional coordinates. The locations of future buildings were obtained from project plans and drawings.
The main source of noise at the project site is vehicle traffic on SR-78 and Montiel Road.
For the purpose of traffic noise compatibility analysis, the noisiest condition is represented as the maximum level of service (LOS) C tra ffic volume. This condition represents a condition where the maximum number of vehicles are using the roadway at the maximum speed. LOS A and B categories allow full trave l speed but do not have as many vehicles, while LOS E and F have a greater number of ve hicles, but due to the traffic volume travel at reduced speeds, thus generating less noise. SR-78 is a 6-lane east-west freeway adjacent to the project site with a maximum LOS C capacity of 1,980 vehicles per hour per lane.
Montiel Road is a 2-lane Local Collector with a maximum LOS C capacity of 13,000 average daily traffic (ADT; City of San Marcos 2012).
Traffic noise levels are calculated based on the peak-hour traffic volumes, which is approximately 10 percent of the ADT volume. Typically, the peak-hour noise level is equivalent to the CNEL. The vehicle classifi cation mix for SR-78 is based on California Department of Transportation (Caltrans) truck counts. Caltrans does not count buses or motorcycles. To account for these classification s, 1 percent of the automobiles were modeled as buses and 1 percent were modeled as moto rcycles. The vehicle classification mix for Montiel Road is based on field traffic counts. No heavy trucks or buses were observed during the measurement period; however, to be conservative, the vehicle mix was adjusted to include a small percentage of heavy trucks and buses.
Noise Analysis
Montiel Road Office Project
Table 6 summarizes the traffic volumes and vehi cle classification mi xes for the modeled roadways.
Table 6
Traffic Parameters
Roadway
Maximum
LOS C Volume
Peak Hour
Volume Speed
Vehicle Mix
(percent)
Autos
Medium
Trucks
Heavy
Trucks Buses Motorcycles
SR-78 11,880 vehicles
per hour 11,880 65 93.7 2.2 2.1 1.0 1.0
Montiel Road 13,000 ADT 1,300 40 95.2 1.6 0.5 0.5 3.2
SR-78 = State Route 78
LOS = level of service
ADT = average daily traffic
4.2.2 Off-site Traffic Noise
Off-site traffic noise was modeled using th e FHWA Traffic Noise Prediction Model algorithms and reference levels. Traffic noise levels were calculated at 50 feet from the centerline of the affected roadways to determine the noise level increase associated with the project. The model uses various input parame ters, such as traffic volumes; vehicle mix, distribution, and speed.
The roadways included in the traffic impact analysis are Montiel Road and Nordahl Road.
Traffic noise levels were calculated based on the total average daily traffic volumes on each roadway segment. For modeling purposes, “har d” ground conditions were used for the analysis of future conditions, since a majority of the project area is paved and the hard site provides the most conservative impact assessment.
Existing and future (year 2035) traffic volumes with and without the project were obtained from the project traffic impact analysis (Linscott, Law, and Greenspan Engineers 2019).
Table 7 summarizes the future traffic volume s for the area roadway segments. Modeled noise levels do not account for shielding provided by intervening barriers and structures.
Table 7
Future Vehicle Traffic Parameters
Roadway Segment
Average Daily Traffic
Speed
(mph) Existing
Existing +
Project Year 2035
Year 2035
+ Project
Montiel Road
Nordahl Road to Leora Lane 7,350 7,943 11,610 12,203 40 Leora Lane to Rock Springs Road 4,620 4,686 5,530 5,596 40 Nordahl Road
Montiel Road to SR-78 Ramps 39,870 40,364 43,370 43,864 40 SOURCE: Linscott, Law and Greenspan Engineers, Inc. 2019.
Noise Analysis
Montiel Road Office Project
4.3 On-site Generated Noise Analysis
On-site noise sources on the project site after completion of construction are anticipated to be those that would be typical of any office use, such as vehicles arriving and leaving, and landscape maintenance machinery. None of these noise sources are an ticipated to violate the City Municipal Code or result in a substantial permanent increase in existing noise levels. However, the project would include rooftop heating, ventilation, and air conditioning (HVAC) equipment that would have the potential to produce noise in excess of City limits (see Table 2).
The rooftop mechanical equipment would be housed within a screened mechanical equipment enclosure. It is not known at this time which manufacturer, brand, or model of unit or units will be selected for use in the project. Typically, a capacity of 1 -ton per 340 square feet would be required for large office buildings . Based on this ratio , the 32,971 square foot building would require ten 10- ton HVAC units. Based on review of manufacturer specifi cations for a sampl e unit (Trane Model T/YSCE120ED), a representative noise level for a 10 -ton unit would be a sound power level of 79 dB. Noise specifications are contained in Attachment 2. The roof plan for the project includes six mechanical wells. As a conservative analysis, two 10 -ton uni ts were modeled at each mechanical well. All units were modeled at full capacity during the daytime and nighttime hours.
Noise levels due to on -site sources were modeled using SoundPLAN. The SoundPLAN program models n oise propagation following the International Organization for Standardization method ISO 9613-2 – Acoustics, Attenuation of Sound during Propagation Outdoors. The model calculates noise levels at selected receiver locations using input parameter estimates such as total noise generated by each noise source; distances between sources, barriers, and receivers; and shielding provided by intervening structures.
5.0 Future Acoustical Environment and
Impacts
5.1 Construction Noise
Noise associated with the gradin g, building, and paving for the project would potentially result in short -term impacts to surrounding residential properties. There are residential uses located north and northeast of the project site . A variety of noise- generating equipment would be used during the construction phase of the project, such as excavators, backhoes, front-end loaders, and concrete saws, along with others. The exact number and pieces of construction equipment required are not known at this time. As discussed, average construction noise levels were calculated. Based on this analysis, hourly average noise levels would be approximately 83 dB(A) L eq at 50 feet from the center of construction activity when assessing three pieces of common construction equipment working simultaneously. Construction noise is considered a point source and would attenuate at Noise Analysis
Montiel Road Office Project
approximately 6 dB(A) for every doubling of distance. To reflect the nature of grading and construction activities, equipment was modeled as an area source distributed over the project footprint. Noise levels were modeled at a series of 12 receivers located at the adjacent uses. The results are summarized in Table 8. Modeled receiver locations and construction noise contours are shown in Figure 5. SoundPLAN d ata is contained in Attachment 3.
As shown, construction noise levels would range from 60 to 75 dB(A) L eq at the adjacent uses. The City’s Municipal Code doe s not place noise limit restrictions on construction activities, however, other jurisdictions commonly apply a noise level limit of 75 dB(A) Leq at residential uses. Construction noise levels would not exceed 75 dB(A) L eq. Construction activities would generally occur over the period between 7:00 a.m. and 6:00 p.m. on weekdays. Although the existing adjacent uses would be exposed to construction noise levels that may be heard above ambient conditions, the exposure would be temporary and would not exceed 75 dB(A) L
eq. As construction activities associated with the project would comply with the time limits established in Section 10 .24.020 (b)(9) of the City Municipal Code, temporary increases in noise levels from construction activities would be less than significant.
Table 8
Construction Noise Levels
Receiver Land Use
Noise Level
[dB(A) Leq]
1 Commercial 75
2 Commercial 75
3 Commercial 74
4 Park 63
5 Residential 67
6 Residential 71
7 Residential 68
8 Residential 65
9 Residential 62
10 Residential 60
11 Commercial 73
12 Commercial 73
5.2 Traffic Noise
5.2.1 On-site Traffic Noise
On-site traffic noise contours were developed using the SoundPLAN program. Noise level contours were modeled at the first -floor level. These contours take into account shielding provided by the proposed building and grading. Future vehicle traffic noise -level contours are shown in Figure 6. SoundPLAN data are contained in Attachment 4.
FIGURE 5
Construction Noise Contours
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DEODAR RD
SAINT PAUL
DR
MONTIEL RD
UV78
1 2
3 4
5 6
7 8
9 10
11 12
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DEODAR RD
SAINT PAUL
DR
MONTIEL RD
UV78
1 2
3 4
5 6
7 8
9 10
11 12
Image Source: Nearmap (flown June 2019)
0 150Feet [Construction Noise Contours
60 dB(A) Leq
65 dB(A) Leq
70 dB(A) Leq
75 dB(A) Leq
!( Adjacent Receivers
Project Boundary
M:\JOBS5\9257\common_gis\fig5_nos.mxd 2/22/2019 bma Noise Analysis
Montiel Road Office Project
As discussed in Section 2.1, the exterior noise level standard for office uses is 65 CNEL.
This standard is applicable at exterior use areas which include the outdoor seating area at the northeast corner of the proposed building and the second -floor deck located above the building entrance . The interior noise level standard is 50 CNEL. To refine the noise analysis and determine noise levels at exterior use areas and the building façade , exterior noise levels were calculated at a series of first- and second-floor specific receiver locations at the seating area (Receivers 1 through 3), the second -floor deck above the building entrance (Receiver 12), and around the proposed bu ilding. Modeled receiver locations are shown in Figure 6. The modeled noise level s at the exterior use area (Receivers 1, 2, 3, and 12) were used to determine compatibility with the City’s exterior noise standard of 65 CNEL.
Modeled noise levels at the fir st- and second-floor building façade receivers were used to determine the compatibility with the City’s interior no ise standard of 50 CNEL. Table 9 summarizes the projected future noise levels at the 12 modeled receivers.
Table 9
Future Vehicle Traffic Noise Levels
Receiver Location
Exterior Noise Level (CNEL)
First-Floor Second-Floor
1 Seating Area/Building Façade 54 56
2 Seating Area/Building Façade 55 56
3 Seating Area/Building Façade 63 67
4 Building Façade 67 71
5 Building Façade 69 73
6 Building Façade 73 76
7 Building Façade 73 77
8 Building Façade 73 77
9 Building Façade 70 73
10 Building Façade 67 71
11 Building Façade 56 59
12 Second-Floor Deck/Building Façade 56 58
CNEL = community noise equivalent level
As shown, noise levels at the exterior seating area (Receivers 1 through 3) would range from 54 to 63 CNEL and noise levels at the second -floor deck above the building entrance (Receiver 12) would be 58 CNEL. Noise levels at the exterior use areas would be compatible with the City’s standard of 65 CNEL.
Exterior noise levels at the building façade are projected to range from 54 to 77 CNEL. The interior noise level standard is 50 CNEL. Interior noise levels can be reduced through standard construction techniques. When windows are closed, s tandard construction techniques provide various exterior-to-interior noise level reductions depending on the type of structure and window . According to the FHWA, masonry and concrete buildings with double-pane windows, which are typically required to meet Title 24 energy code requirements, provide a 35 dB(A) reduction at interior locations from exterior noise sources (FHWA 2011). Based on these standards, interior noise levels would be reduced to 50 CNEL or less. Therefore, significant impact s related to on-site traffic noise would be less than significant.
FIGURE 6
Traffic Noise Contours
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DEOD
AR RD
MONTIEL RD
UV78
1 2
3 4
56 7
8 9
1 0 11
12 !( !(
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DEOD
AR RD
MONTIEL RD
UV78
1 2
3 4
56 7
8 9
1 0 11
12 Image Source: Nearmap (flown June 2019)
0 100Feet [T raffic Noise Contours
60 dB(A) Leq
65 dB(A) Leq
70 dB(A) Leq
75 dB(A) Leq
!( Receivers
Site Plan Line
Project Boundary
M:\JOBS5\9257\common_gis\fig6_nos.mxd 8/21/2019 bma Noise Analysis
Montiel Road Office Project
5.2.2 Off-site Traffic Noise
The project would increase traffic volumes on local roadways. However, t he project would not substantially alter the ve hicle classifications mix on local or regional roadways, nor would the project alter the speed on an existing roadway or create a new roadway. Thus, the primary factor affecting off -site noise levels would be increased traffic volumes. While changes in noise levels would occur along any roadway where project -related traffic occurs, for noise assessment purposes, noise level increases are assumed to be greatest nearest the project site, as this location would represent the greatest concentration of project -related traffic. Traffic noise increases attributable to the project were assessed against a significance threshold of 3 dB, which is the level at which an increase in noise is considered to be barely perceptible (Caltrans 2013).
Table 10 presents a conserv ative assessment of traffic noise levels based on the existing, existing plus project, future, and future plus project noise levels generated by traffic.
Table 10 also summarizes the direct and cumulative traffic noise level increases due to the project. Noise level calculations are contained in Attachment 5.
Table 10
Traffic Noise Level with and without Project and Ambient Noise Increases Roadway Segment Existing
Existing
+ Project
Direct
Increase
Year
2035
Year
2035
+ Project
Cumulative
Increase Over
Existing
Montiel Road
Nordahl Road to Leora Lane 65.3 65.6 0.3 67.3 67.5 2.2
Leora Land to Rock Springs Road 63.3 63.4 0.1 64.1 64.1 0.8 Nordahl Road
Montiel Road to SR-78 Ramps 73.9 73.9 0.0 74.3 74.3 0.4 Note: Increase calculations may vary due to independent rounding.
As shown, the project would not result in a direct or cumulative noise increase of more than 3 dB. Therefore, the project would result in less than significant direct and cumulative impacts related to traffic noise.
5.3 On-site Generated Noise
The primary noise sources on -site would be HVAC equipment. Rooftop HVAC equipment that would have the potential to produce noise in excess of City limits (see Table 2). Using the on-site noise source parameters discussed in Section 4.3, noise levels were modeled at a series of 12 receivers located at the adjacent properties . The rooftop mechanical equipment would be housed within a screened mechanical equipment enclosure. Noise generated by HVAC equipment would occur on an intermittent basis, primarily during the day and evening hours and less frequently during the nighttime hours. For a worst -case analysis, it was assumed that the HVAC units would operate continuously, and noise reductions due to the enclosure were not taken into account.
Noise Analysis
Montiel Road Office Project
Modeled receivers and the locations of the HVAC units are shown in Figure 7. Modeled data is included in Attachment 6. Future projected noise levels are summarized in Table 11.
As shown, on-site generated noise levels would range from 32 to 40 dB(A) Leq. Noise levels would not exceed the applicable Noise Ordinance limits at the property lines and impacts related to on-site generated noise would be less than significant.
Table 11
HVAC Noise Levels at Adjacent Properties
Receiver Land Use
Noise Level
[dB(A) Leq]
Noise Ordinance Limit
Daytime/Nighttime
[dB(A) Leq]
1 Commercial 40 60/55
2 Commercial 40 60/55
3 Commercial 40 60/55
4 Park 34 60/50
5 Residential 36 60/50
6 Residential 37 60/50
7 Residential 36 60/50
8 Residential 35 60/50
9 Residential 34 60/50
10 Residential 32 60/50
11 Commercial 40 60/55
12 Commercial 38 60/55
6.0 Conclusions
6.1 Construction Noise
As shown in Table 8 , construction noise levels would range from 60 to 75 dB(A) Leq at the adjacent property lines. The City’s Municipal Code does not place noise limit restrictions on construction activities, however, other jurisdictions commonly apply a noise level limit of 75 dB(A) Leq at residential uses. Construction activities wou ld generally occur over the period between 7:00 a.m. and 6:00 p.m. on weekdays. Although the existing adjacent uses would be exposed to construction noise levels that may be heard above ambient conditions, the exposure would be temporary and would not exce ed 75 dB(A) L eq. As construction activities
associated with the project would comply with the time limits established in Section
10.24.020 (b)(9) of the City Municipal Code , temporary increases in noise levels from construction activities would be less than significant.
FIGURE 7
HVAC Noise Contours
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UV78
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UV78
1 2
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7 8
9 1
0 11
12 Image Source: Nearmap (flown June 2019)
0 150Feet [HVAC Noise Contours
30 dB(A) Leq
35 dB(A) Leq
40 dB(A) Leq
!( Adjacent Receivers
!( H VAC Locations
Site Plan Line
Project Boundary
M:\JOBS5\9257\common_gis\fig7_nos.mxd 8/21/2019 bma Noise Analysis
Montiel Road Office Project
6.2 Traffic Noise
6.2.1 On-site Traffic Noise
The main source of noise at the project site is vehicle traffic on SR-78 and Montiel Road .
The exterior noise level standard for office uses is 65 CNEL. This standard is applicable at exterior us e areas which include the outdoor seating area at the northeast corner of the proposed building and the second -floor deck located above the building entrance. As shown in Table 9, noise levels at the exterior seating area (Receivers 1 through 3) would rang e from 54 to 63 CNEL and noise levels at the second -floor deck above the building entrance (Receiver 12) would be 58 CNEL. Noise levels at the exterior use areas would be compatible with the City’s standard of 65 CNEL.
Exterior noise levels at the building façade are projected to range from 54 to 77 CNEL. The interior noise level standard is 50 CNEL. According to the FHWA, masonry and concrete buildings with double -pane windows, which are typically required to meet Title 24 energy code requirements, provide a 35 dB(A) reduction at interior locations from exterior noise sources (FHWA 2011). Based on these standards, interior noise levels would be reduced to 50 CNEL or less.
6.2.2 Off-site Traffic Noise
The additional vehicle trips associated with the project would increase noise levels on nearby roadways. A noise increase of 3 dB or more would be considered significant because 3 dB is the level at which an increase in noise is perceptible to a person. As shown in Table 10, the project would not result in a direct or cumulative noise increase of more than 3 dB. Therefore, the project would result in less than significant direct and cumulative impact related to traffic noise.
6.3 On-site Generated Noise
The noise sources on the project site after completion of c onstruction are anticipated to be those that would be typical of any office use, such as vehicles arriving and leaving and landscape maintenance machinery. None of these noise sources are anticipated to violate the City Municipal Code. Rooftop HVAC noise l evels were modeled at the adjacent properties. As shown in Table 11, on -site generated noise levels would range from 32 to 40 dB(A) L eq. Noise levels would not exceed the applicable Noise Ordinance limits at the property lines.
Noise Analysis
Montiel Road Office Project
7.0 References Cited
California Code of Regulations
2016 2016 California Building Code, California Code of Regulations, Title 24, Chapter 12 Interior Environment, Section 1207, Sound Transmission, accessed at http://www.bsc.ca.gov/codes.aspx.
California Department of Transportation (Caltrans)
2013 Technical Noise Supplement. November.
Federal Highway Administration (FHWA)
2006 Roadway Construction Noise Model. FHWA-HEP-05-054, SOT-VNTSC-FHWA-05-
01. Final Report. January 2006.
2011 Highway Traffic Noise: Analysis and Abatement Guidance. FHWA -HEP-10-025.
December 2011.
Linscott, Law, and Greenspan Engineers, Inc.
2019 Transportation Impact Analysis for the Montiel Road Office . LLG Ref. 3 -18- 3017.January 17, 2019.
Navcon Engineering, Inc.
2015 SoundPLAN Essential version 3.0
San Marcos, City of
2012 Draft Environmental Impact Report for the City of San Marcos General Plan. 2012.
2013 City of San Marcos General Plan Update, Noise Element.
Noise Analysis
Montiel Road Office Project
ATTACHMENTS
Noise Analysis
Montiel Road Office Project
ATTACHMENT 1
Noise Measurement Data
9257 Montiel Road Office
Measurement Data
Summary
Filename LxT_Data.034
Serial Number 3827
Model SoundExpert™ LxT
Firmware Version 2.301
User
Location 9257 Montiel Road Office
Job Description
Note
Measurement Description
Start 2019/01/09 11:12:24
Stop 2019/01/09 11:27:25
Duration 0:15:00.6
Run Time 0:09:59.6
Pause 0:05:01.0
Pre Calibration 2019/01/09 11:09:45
Post Calibration 2019/01/09 11:30:56
Calibration Deviation -0.05 dB
Overall Settings
RMS Weight A Weighting
Peak Weight A Weighting
Detector Slow
Preamp PRMLxT1L
Microphone Correction Off
Integration Method Linear
OBA Range Normal
OBA Bandwidth 1/1 and 1/3
OBA Freq. Weighting A Weighting
OBA Max Spectrum At Lmax
Overload 121.8 dB
A C Z
Under Range Peak 78.0 75.0 80.0 dB
Under Range Limit 26.0 25.2 32.0 dB
Noise Floor 16.3 16.1 22.0 dB
Results
LAeq 71.4 dB
LAE 99.2 dB
EA 915.302 µPa²h
LApeak (max) 2019/01/09 11:23:18 90.2 dB
LASmax 2019/01/09 11:23:18 76.5 dB
LASmin 2019/01/09 11:21:17 66.3 dB
SEA -99.9 dB
LAS > 85.0 dB (Exceedence Counts / Duration) 0 0.0 s
LAS > 115.0 dB (Exceedence Counts / Duration) 0 0.0 s
LApeak > 135.0 dB (Exceedence Counts / Duration) 0 0.0 s LApeak > 137.0 dB (Exceedence Counts / Duration) 0 0.0 s LApeak > 140.0 dB (Exceedence Counts / Duration) 0 0.0 s Community Noise Ldn LDay 07:00-22:00 LNight 22:00-07:00 Lden LDay 07:00-19:00 LEvening 19:00-22:00 LNight 22:00-07:00
71.4 71.4 -99.9 71.4 71.4 -99.9 -99.9
LCeq 77.6 dB
LAeq 71.4 dB
LCeq - LAeq 6.3 dB
LAIeq 72.1 dB
LAeq 71.4 dB
LAIeq - LAeq 0.7 dB
# Overloads 0
Overload Duration 0.0 s
# OBA Overloads 0
OBA Overload Duration 0.0 s
Statistics
LAS5.00 73.3 dB
LAS10.00 72.8 dB
LAS33.30 71.8 dB
LAS50.00 71.3 dB
LAS66.60 70.8 dB
LAS90.00 69.0 dB
Measurement 1
9257 Montiel Road Office
Measurement Data
Summary
Filename LxT_Data.001
Serial Number 3828
Model SoundExpert™ LxT
Firmware Version 2.302
User
Location
Job Description 9257 Montiel Road Office
Note
Measurement Description
Start 2019/01/09 10:09:17
Stop 2019/01/09 10:24:17
Duration 0:15:00.3
Run Time 0:15:00.3
Pause 0:00:00.0
Pre Calibration 2019/01/09 10:05:37
Post Calibration None
Calibration Deviation ---
Overall Settings
RMS Weight A Weighting
Peak Weight A Weighting
Detector Slow
Preamp PRMLxT1L
Microphone Correction Off
Integration Method Linear
OBA Range Normal
OBA Bandwidth 1/1 and 1/3
OBA Freq. Weighting A Weighting
OBA Max Spectrum At Lmax
Overload 121.8 dB
A C Z
Under Range Peak 78.1 75.1 80.1 dB
Under Range Limit 27.1 25.8 33.1 dB
Noise Floor 16.8 16.7 22.9 dB
Results
LAeq 60.3 dB
LAE 89.8 dB
EA 107.120 µPa²h
LApeak (max) 2019/01/09 10:09:21 89.8 dB
LASmax 2019/01/09 10:12:33 68.9 dB
LASmin 2019/01/09 10:09:20 54.7 dB
SEA -99.9 dB
LAS > 85.0 dB (Exceedence Counts / Duration) 0 0.0 s
LAS > 115.0 dB (Exceedence Counts / Duration) 0 0.0 s
LApeak > 135.0 dB (Exceedence Counts / Duration) 0 0.0 s LApeak > 137.0 dB (Exceedence Counts / Duration) 0 0.0 s LApeak > 140.0 dB (Exceedence Counts / Duration) 0 0.0 s Community Noise Ldn LDay 07:00-22:00 LNight 22:00-07:00 Lden LDay 07:00-19:00 LEvening 19:00-22:00 LNight 22:00-07:00
60.3 60.3 -99.9 60.3 60.3 -99.9 -99.9
LCeq 69.7 dB
LAeq 60.3 dB
LCeq - LAeq 9.4 dB
LAIeq 62.0 dB
LAeq 60.3 dB
LAIeq - LAeq 1.7 dB
# Overloads 0
Overload Duration 0.0 s
# OBA Overloads 0
OBA Overload Duration 0.0 s
Statistics
LAS5.00 63.9 dB
LAS10.00 62.9 dB
LAS33.30 60.3 dB
LAS50.00 59.2 dB
LAS66.60 58.4 dB
LAS90.00 56.8 dB
Measurement 2
Noise Analysis
Montiel Road Office Project
ATTACHMENT 2
Tran Model T/YSCE120ED Specifications
118 RT -PRC039C-EN
Fan Performance
\
T able 6. Standard motor & low static dr ive accessory sheave/fan speed (rpm) Unit Model
Number
Fan 6 Turns 5 Turns 4 Turns 3 Turns 2 Turns 1 Turn
Tons Sheave Open Open Open Open Open Open Closed
5 WSC060ED AK44x3/4" N/A 720 791 861 931 1002 1072
6 WSC072ED AK56x1" N/A 558 612 665 718 772 825
7½ WSC090ED AK57x1" N/A 688 737 787 837 887 N/A
10 WSC120ED AK105X1" N/A 724 776 828 880 932 984
Note: Factory set at 3 turns open.
T able 7 . Standard motor & high static drive accessory sheave/fan speed (rpm) Unit Model
Number
Fan 6 Turns 5 Turns 4 Turns 3 Turns 2 Turns 1 Turn
Tons Sheave Open Open Open Open Open Open Closed
6 WSC072ED AK56x1" N/A 968 1018 1068 1118 1169 1219
7½ WSC090ED AK57x1" 1053 1091 1129 1166 1204 1242 N/A
10 WSC120ED AK105X1" 1110 1159 1209 1258 1308 1357 N/A
Note: Factory set at 3 turns open.
T able 8. Oversized motor & high static drive accessory sheave/fan speed (rpm) Unit Model
Number
Fan 6 Turns 5 Turns 4 Turns 3 Turns 2 Turns 1 Turn
Tons Sheave Open Open Open Open Open Open Closed
7½ WSC090ED AK85x1" 1186 1249 1311 1373 1436 N/A N/A
Note: Factory set at 3 turns open.
T able 9. Outdoor sound power level—dB (ref. 10—2 W)
Unit Model
Number
Octave Center Frequency Overall
dBATons 63 125 250 500 1000 2000 4000 8000
5 T/YSC060ED 84 91 79 77 74 71 68 63 80
6 T/YSC072ED 83 90 86 82 79 75 70 63 85
7½ T/YSC090ED 83 90 86 83 80 75 71 64 85
8.5 T/YSC102ED 83 89 84 81 77 72 69 62 83
10 T/YSC120ED 83 86 80 77 73 69 66 60 79
Note: Tests follow ARI270-95.
T able 10. Outdoor sound power level—dB (ref. 10—12 W)
Unit Model
Number
Octave Center Frequency Overall
Tons 63 125 250 500 1000 2000 4000 8000 dBA
5 WSC060ED 84 91 79 77 74 71 68 63 80
6 WSC072ED 83 90 86 82 79 75 70 63 85
7½ WSC090ED 83 90 86 83 80 75 71 64 85
10 WSC120ED 83 86 80 77 73 69 66 60 79
Note: Tests follow ARI270-95.
Noise Analysis
Montiel Road Office Project
ATTACHMENT 3
SoundPLAN Data – Construction Noise
9257 Montiel Road Office
SoundPLAN Data - Construction
Level
Source name Reference Leq1 Kwall CI CT
dB(A) dB(A) dB(A) dB(A)
Construction Unit 117 - - -
Corrections
Construction
9257 Montiel Road Office
SoundPLAN Data - Construction
Limit Level w/o NP Level w. NP Difference Conflict
No. X Y Floor Height Leq1 Leq1 Leq1 Leq1 Leq1
m dB(A) dB(A) dB(A) dB(A) dB(A)
1 489371.06 3665673.58 1.Fl 208.02 - 74.6 0 -74.6 -
2 489383.43 3665695.87 1.Fl 209.49 - 74.5 0 -74.5 -
3 489395.34 3665717.34 1.Fl 209.98 - 74.3 0 -74.3 -
4 489371.38 3665795.91 1.Fl 213.18 - 62.5 0 -62.5 -
5 489413.86 3665772.59 1.Fl 212.93 - 67.0 0 -67.0 -
6 489465.29 3665745.76 1.Fl 211.81 - 71.1 0 -71.1 -
7 489504.90 3665727.56 1.Fl 211.46 - 67.7 0 -67.7 -
8 489532.05 3665711.27 1.Fl 210.55 - 64.5 0 -64.5 -
9 489559.83 3665696.89 1.Fl 209.93 - 62.1 0 -62.1 -
10 489595.29 3665679.96 1.Fl 208.36 - 59.7 0 -59.7 -
11 489478.70 3665669.74 1.Fl 207.54 - 73.1 0 -73.1 -
12 489458.26 3665631.09 1.Fl 207.54 - 73.4 0 -73.4 -
Coordinates
in meter
Receivers
Noise Analysis
Montiel Road Office Project
ATTACHMENT 4
SoundPLAN Data – On-site Traffic Noise
9257 Montiel Road Office
SoundPLAN Data - Traffic
Traffic values Control Constr. Affect. Gradient
Stationing ADT Vehicles type Vehicle nameday Speed device Speed veh. Road surface Min / Max km Veh/24h Veh/h km/h km/h % %
Montiel Road Traffic direction: In entry direction 0+000 31536 Total - 1314 - none - - Average (of DGAC and PCC) 0 0+000 31536 Automobiles - 1237 64 none - - Average (of DGAC and PCC) 0 0+000 31536 Medium trucks - 21 64 none - - Average (of DGAC and PCC) 0 0+000 31536 Heavy trucks - 7 64 none - - Average (of DGAC and PCC) 0 0+000 31536 Buses - 7 64 none - - Average (of DGAC and PCC) 0 0+000 31536 Motorcycles - 42 64 none - - Average (of DGAC and PCC) 0 0+000 31536 Auxiliary Vehicle - - - none - - Average (of DGAC and PCC) 0 0+678 - - - - - -
SR-78 EB Traffic direction: In entry direction
0+000 142512 Total - 5938 - none - - Average (of DGAC and PCC) 0 0+000 142512 Automobiles - 5565 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Medium trucks - 132 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Heavy trucks - 123 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Buses - 59 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Motorcycles - 59 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Auxiliary Vehicle - - - none - - Average (of DGAC and PCC) 0 1+141 - - - - - -
SR-78 EB Ramp Traffic direction: In entry direction 0+000 95040 Total - 3960 - none - - Average (of DGAC and PCC) 0 0+000 95040 Automobiles - 3710 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Medium trucks - 88 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Heavy trucks - 82 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Buses - 40 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Motorcycles - 40 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Auxiliary Vehicle - - - none - - Average (of DGAC and PCC) 0 0+437 - - - - - -
SR-78 WB Traffic direction: In entry direction
0+000 142512 Total - 5938 - none - - Average (of DGAC and PCC) 0 0+000 142512 Automobiles - 5565 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Medium trucks - 132 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Heavy trucks - 123 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Buses - 59 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Motorcycles - 59 105 none - - Average (of DGAC and PCC) 0 0+000 142512 Auxiliary Vehicle - - - none - - Average (of DGAC and PCC) 0 1+107 - - - - - -
SR-78 WB Ramp Traffic direction: In entry direction 0+000 95040 Total - 3960 - none - - Average (of DGAC and PCC) 0 0+000 95040 Automobiles - 3710 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Medium trucks - 88 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Heavy trucks - 82 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Buses - 40 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Motorcycles - 40 105 none - - Average (of DGAC and PCC) 0 0+000 95040 Auxiliary Vehicle - - - none - - Average (of DGAC and PCC) 0 0+397 - - - - - -
Road
9257 Montiel Road Office
SoundPLAN Data - Traffic
Limit Level w/o NP Level w. NP Difference Conflict
No. X Y Floor Height L(Aeq1h) L(Aeq1h) L(Aeq1h) L(Aeq1h) L(Aeq1h) m dB(A) dB(A) dB(A) dB(A) dB(A)
1 489432.03 3665652.04 1.Fl 207.27 - 54.1 0 -54.1 -
1 489432.03 3665652.04 2.Fl 211.57 - 55.9 0 -55.9 -
2 489440.34 3665647.84 1.Fl 207.11 - 54.5 0 -54.5 -
2 489440.34 3665647.84 2.Fl 211.41 - 56.4 0 -56.4 -
3 489443.11 3665641.75 1.Fl 207.02 - 63.2 0 -63.2 -
3 489443.11 3665641.75 2.Fl 211.32 - 66.9 0 -66.9 -
4 489441.45 3665633.44 1.Fl 207.00 - 67.1 0 -67.1 -
4 489441.45 3665633.44 2.Fl 211.30 - 70.8 0 -70.8 -
5 489436.24 3665624.03 1.Fl 206.38 - 68.8 0 -68.8 -
5 489436.24 3665624.03 2.Fl 210.68 - 73.1 0 -73.1 -
6 489425.72 3665621.70 1.Fl 206.41 - 73.1 0 -73.1 -
6 489425.72 3665621.70 2.Fl 210.71 - 76.4 0 -76.4 -
7 489409.00 3665629.90 1.Fl 206.70 - 73.3 0 -73.3 -
7 489409.00 3665629.90 2.Fl 211.00 - 76.5 0 -76.5 -
8 489394.94 3665636.98 1.Fl 206.96 - 73.4 0 -73.4 -
8 489394.94 3665636.98 2.Fl 211.26 - 76.5 0 -76.5 -
9 489388.74 3665649.72 1.Fl 207.49 - 69.5 0 -69.5 -
9 489388.74 3665649.72 2.Fl 211.79 - 72.6 0 -72.6 -
10 489396.93 3665665.55 1.Fl 207.86 - 67.3 0 -67.3 -
10 489396.93 3665665.55 2.Fl 212.16 - 70.6 0 -70.6 -
11 489409.89 3665666.33 1.Fl 207.72 - 55.6 0 -55.6 -
11 489409.89 3665666.33 2.Fl 212.02 - 59.0 0 -59.0 -
12 489424.61 3665659.68 1.Fl 207.47 - 55.6 0 -55.6 -
12 489424.61 3665659.68 2.Fl 211.77 - 58.3 0 -58.3 -
Coordinates
in meter
Receivers
9257 Montiel Road Office
SoundPLAN Data - Traffic
Level w/o NP Level w. NP
Source name Lane L(Aeq1h) L(Aeq1h)
dB(A) dB(A)
1 1.Fl 54.1 0.0
Montiel Road 53.6 0
SR-78 EB 39.9 0
SR-78 EB Ramp 34.4 0
SR-78 WB 40.2 0
SR-78 WB Ramp 34.9 0
1 2.Fl 55.9 0.0
Montiel Road 55.5 0
SR-78 EB 41.6 0
SR-78 EB Ramp 35.9 0
SR-78 WB 42.2 0
SR-78 WB Ramp 36.7 0
2 1.Fl 54.5 0.0
Montiel Road 53.7 0
SR-78 EB 42.5 0
SR-78 EB Ramp 36.7 0
SR-78 WB 43.1 0
SR-78 WB Ramp 36.6 0
2 2.Fl 56.4 0.0
Montiel Road 55.8 0
SR-78 EB 43.0 0
SR-78 EB Ramp 36.4 0
SR-78 WB 43.9 0
SR-78 WB Ramp 36.7 0
3 1.Fl 63.2 0.0
Montiel Road 51.3 0
SR-78 EB 58.8 0
SR-78 EB Ramp 37.7 0
SR-78 WB 60.0 0
SR-78 WB Ramp 52.4 0
3 2.Fl 66.9 0.0
Montiel Road 53.4 0
SR-78 EB 62.5 0
SR-78 EB Ramp 36.8 0
SR-78 WB 63.8 0
SR-78 WB Ramp 57.2 0
4 1.Fl 67.1 0.0
Montiel Road 48.9 0
SR-78 EB 62.7 0
SR-78 EB Ramp 48.6 0
SR-78 WB 64.2 0
SR-78 WB Ramp 56.4 0
4 2.Fl 70.8 0.0
Montiel Road 51.0 0
SR-78 EB 66.4 0
SR-78 EB Ramp 54.5 0
SR-78 WB 67.8 0
SR-78 WB Ramp 61.1 0
5 1.Fl 68.8 0.0
Montiel Road 47.0 0
SR-78 EB 64.3 0
SR-78 EB Ramp 53.6 0
Contributions
9257 Montiel Road Office
SoundPLAN Data - Traffic
SR-78 WB 66.1 0
SR-78 WB Ramp 57.4 0
5 2.Fl 73.1 0.0
Montiel Road 49.0 0
SR-78 EB 68.4 0
SR-78 EB Ramp 59.1 0
SR-78 WB 70.2 0
SR-78 WB Ramp 63.1 0
6 1.Fl 73.1 0.0
Montiel Road 26.6 0
SR-78 EB 68.5 0
SR-78 EB Ramp 54.4 0
SR-78 WB 70.9 0
SR-78 WB Ramp 57.8 0
6 2.Fl 76.4 0.0
Montiel Road 29.6 0
SR-78 EB 71.9 0
SR-78 EB Ramp 58.6 0
SR-78 WB 74.1 0
SR-78 WB Ramp 62.9 0
7 1.Fl 73.3 0.0
Montiel Road 26.6 0
SR-78 EB 68.8 0
SR-78 EB Ramp 54.3 0
SR-78 WB 71.2 0
SR-78 WB Ramp 57.3 0
7 2.Fl 76.5 0.0
Montiel Road 28.9 0
SR-78 EB 72.0 0
SR-78 EB Ramp 58.3 0
SR-78 WB 74.2 0
SR-78 WB Ramp 61.9 0
8 1.Fl 73.4 0.0
Montiel Road 27.1 0
SR-78 EB 68.8 0
SR-78 EB Ramp 53.9 0
SR-78 WB 71.3 0
SR-78 WB Ramp 57.2 0
8 2.Fl 76.5 0.0
Montiel Road 29.4 0
SR-78 EB 72.0 0
SR-78 EB Ramp 57.8 0
SR-78 WB 74.2 0
SR-78 WB Ramp 61.1 0
9 1.Fl 69.5 0.0
Montiel Road 47.9 0
SR-78 EB 65.2 0
SR-78 EB Ramp 27.3 0
SR-78 WB 67.4 0
SR-78 WB Ramp 30.6 0
9 2.Fl 72.6 0.0
Montiel Road 50.0 0
SR-78 EB 68.5 0
SR-78 EB Ramp 32.0 0
SR-78 WB 70.4 0
Contributions
9257 Montiel Road Office
SoundPLAN Data - Traffic
SR-78 WB Ramp 33.5 0
10 1.Fl 67.3 0.0
Montiel Road 50.0 0
SR-78 EB 63.2 0
SR-78 EB Ramp 33.9 0
SR-78 WB 65.0 0
SR-78 WB Ramp 41.7 0
10 2.Fl 70.6 0.0
Montiel Road 52.1 0
SR-78 EB 66.8 0
SR-78 EB Ramp 36.1 0
SR-78 WB 68.1 0
SR-78 WB Ramp 46.0 0
11 1.Fl 55.6 0.0
Montiel Road 53.9 0
SR-78 EB 47.0 0
SR-78 EB Ramp 31.1 0
SR-78 WB 48.2 0
SR-78 WB Ramp 32.7 0
11 2.Fl 59.0 0.0
Montiel Road 56.3 0
SR-78 EB 52.1 0
SR-78 EB Ramp 33.5 0
SR-78 WB 53.1 0
SR-78 WB Ramp 35.6 0
12 1.Fl 55.6 0.0
Montiel Road 54.6 0
SR-78 EB 44.4 0
SR-78 EB Ramp 32.9 0
SR-78 WB 45.6 0
SR-78 WB Ramp 34.5 0
12 2.Fl 58.3 0.0
Montiel Road 56.4 0
SR-78 EB 50.0 0
SR-78 EB Ramp 34.2 0
SR-78 WB 50.9 0
SR-78 WB Ramp 35.6 0
Contributions
Noise Analysis
Montiel Road Office Project
ATTACHMENT 5
FHWA RD-77-108 – Off-site Traffic Noise
9257 Montiel Road Office
FHWA RD-77-108 - Off-Site Traffic Noise
Roadway Segment Existing Existing + Project Difference
Existing +
Cumulative
Existing +
Cumulative +
Project Difference Year 2035
Year 2035 +
Project Difference
Increase Over
Existing
1 Montiel Road Nordahl Road to Leora Lane 65.3 65.6 0.3 67.3 67.5 0.2 67.3 67.5 0.2 2.2 2 Montiel Road Leora Lane to Rock Springs Road 63.3 63.4 0.1 63.6 63.6 0.0 64.1 64.1 0.0 0.8 3 Nordahl Road Montiel Road to SR-78 Ramps 73.9 73.9 0.0 73.9 74.0 0.1 74.3 74.3 0.0 0.4 Summary
Data Input Sheet
Project Name : Montiel Road Office
Project Number : 9257 Surface Refelction: CNEL
Modeled Condition : Existing, Existing + Project Assessment Metric: Hard Peak ratio to ADT: 10.00
Traffic Desc. (Peak or ADT) : ADT
Segment Roadway Segment Traffic Vol. % Autos %MT % HT Day % Eve % Night %
EXISTING
1 Montiel Road Nordahl Road to Leora Lane 7,350 40 50 97.90 1.60 0.50 80.00 10.00 10.00 2 Montiel Road Leora Lane to Rock Springs Road 4,620 40 50 97.90 1.60 0.50 80.00 10.00 10.00 3 Nordahl Road Montiel Road to SR-78 Ramps 39,870 40 50 95.70 2.20 2.10 80.00 10.00 10.00 EXISTING + PROJECT
1 Montiel Road Nordahl Road to Leora Lane 7,943 40 50 97.90 1.60 0.50 80.00 10.00 10.00 2 Montiel Road Leora Lane to Rock Springs Road 4,686 40 50 97.90 1.60 0.50 80.00 10.00 10.00 3 Nordahl Road Montiel Road to SR-78 Ramps 40,364 40 50 95.70 2.20 2.10 80.00 10.00 10.00 Predicted Noise Levels
Project Name : Montiel Road Office
Project Number : 9257
Modeled Condition : Existing, Existing + Project
Assessment Metric: Hard
Segment Roadway Segment Auto MT HT Total 75 dB 70 dB 65 dB 60 dB 55 dB 50 dB
EXISTING
1 Montiel Road Nordahl Road to Leora Lane 64.3 55.4 55.2 65.3 5 17 54 169 536 1,694 2 Montiel Road Leora Lane to Rock Springs Road 62.3 53.4 53.2 63.3 3 11 34 107 338 1,069 3 Nordahl Road Montiel Road to SR-78 Ramps 71.6 64.1 68.8 73.9 39 123 388 1,227 3,881 12,274 EXISTING + PROJECT
1 Montiel Road Nordahl Road to Leora Lane 64.7 55.7 55.5 65.6 6 18 57 182 574 1,815 2 Montiel Road Leora Lane to Rock Springs Road 62.4 53.5 53.2 63.4 3 11 35 109 346 1,094 3 Nordahl Road Montiel Road to SR-78 Ramps 71.6 64.2 68.8 73.9 39 123 388 1,227 3,881 12,274 Noise Levels, dBA Hard Distance to Traffic Noise Level Contours, Feet FHWA RD-77-108
Traffic Noise Prediction Model
Speed
(Mph)
Distance
to CL K-Factor
FHWA RD-77-108
Traffic Noise Prediction Model
Data Input Sheet
Project Name : Montiel Road Office
Project Number : 9257 Surface Refelction: CNEL
Modeled Condition : Existing + Cumulative, Existing + Cumulative + Project Assessment Metric: Hard Peak ratio to ADT: 10.00
Traffic Desc. (Peak or ADT) : ADT
Segment Roadway Segment Traffic Vol. % Autos %MT % HT Day % Eve % Night % EXISTING + CUMULATIVE
1 Montiel Road Nordahl Road to Leora Lane 11,600 40 50 97.90 1.60 0.50 80.00 10.00 10.00 2 Montiel Road Leora Lane to Rock Springs Road 4,930 40 50 97.90 1.60 0.50 80.00 10.00 10.00 3 Nordahl Road Montiel Road to SR-78 Ramps 40,370 40 50 95.70 2.20 2.10 80.00 10.00 10.00 EXISTING + CUMULATIVE + PROJECT
1 Montiel Road Nordahl Road to Leora Lane 12,193 40 50 97.90 1.60 0.50 80.00 10.00 10.00 2 Montiel Road Leora Lane to Rock Springs Road 4,996 40 50 97.90 1.60 0.50 80.00 10.00 10.00 3 Nordahl Road Montiel Road to SR-78 Ramps 40,864 40 50 95.70 2.20 2.10 80.00 10.00 10.00 Predicted Noise Levels
Project Name : Montiel Road Office
Project Number : 9257
Modeled Condition : Existing + Cumulative, Existing + Cumulative + Project Assessment Metric: Hard
Segment Roadway Segment Auto MT HT Total 75 dB 70 dB 65 dB 60 dB 55 dB 50 dB EXISTING + CUMULATIVE
1 Montiel Road Nordahl Road to Leora Lane 66.3 57.4 57.2 67.3 8 27 85 269 849 2,685 2 Montiel Road Leora Lane to Rock Springs Road 62.6 53.7 53.4 63.6 4 11 36 115 362 1,145 3 Nordahl Road Montiel Road to SR-78 Ramps 71.6 64.2 68.8 73.9 39 123 388 1,227 3,881 12,274 EXISTING + CUMULATIVE + PROJECT
1 Montiel Road Nordahl Road to Leora Lane 66.5 57.6 57.4 67.5 9 28 89 281 889 2,812 2 Montiel Road Leora Lane to Rock Springs Road 62.7 53.7 53.5 63.6 4 11 36 115 362 1,145 3 Nordahl Road Montiel Road to SR-78 Ramps 71.7 64.2 68.9 74.0 40 126 397 1,256 3,972 12,559 FHWA RD-77-108
Traffic Noise Prediction Model
Noise Levels, dBA Hard Distance to Traffic Noise Level Contours, Feet FHWA RD-77-108
Traffic Noise Prediction Model
Speed
(Mph)
Distance
to CL K-Factor
Data Input Sheet
Project Name : Montiel Road Office
Project Number : 9257 Surface Refelction: CNEL
Modeled Condition : Year 2035, Year 2035 + Project Assessment Metric: Hard Peak ratio to ADT: 10.00
Traffic Desc. (Peak or ADT) : ADT
Segment Roadway Segment Traffic Vol. % Autos %MT % HT Day % Eve % Night % YEAR 2035
1 Montiel Road Nordahl Road to Leora Lane 11,610 40 50 97.90 1.60 0.50 80.00 10.00 10.00 2 Montiel Road Leora Lane to Rock Springs Road 5,530 40 50 97.90 1.60 0.50 80.00 10.00 10.00 3 Nordahl Road Montiel Road to SR-78 Ramps 43,370 40 50 95.70 2.20 2.10 80.00 10.00 10.00 YEAR 2035 + PROJECT
1 Montiel Road Nordahl Road to Leora Lane 12,203 40 50 97.90 1.60 0.50 80.00 10.00 10.00 2 Montiel Road Leora Lane to Rock Springs Road 5,596 40 50 97.90 1.60 0.50 80.00 10.00 10.00 3 Nordahl Road Montiel Road to SR-78 Ramps 43,864 40 50 95.70 2.20 2.10 80.00 10.00 10.00 Predicted Noise Levels
Project Name : Montiel Road Office
Project Number : 9257
Modeled Condition : Year 2035, Year 2035 + Project
Assessment Metric: Hard
Segment Roadway Segment Auto MT HT Total 75 dB 70 dB 65 dB 60 dB 55 dB 50 dB YEAR 2035
1 Montiel Road Nordahl Road to Leora Lane 66.3 57.4 57.2 67.3 8 27 85 269 849 2,685 2 Montiel Road Leora Lane to Rock Springs Road 63.1 54.2 53.9 64.1 4 13 41 129 406 1,285 3 Nordahl Road Montiel Road to SR-78 Ramps 72.0 64.5 69.1 74.3 43 135 426 1,346 4,256 13,458 YEAR 2035 + PROJECT
1 Montiel Road Nordahl Road to Leora Lane 66.5 57.6 57.4 67.5 9 28 89 281 889 2,812 2 Montiel Road Leora Lane to Rock Springs Road 63.2 54.2 54.0 64.1 4 13 41 129 406 1,285 3 Nordahl Road Montiel Road to SR-78 Ramps 72.0 64.5 69.2 74.3 43 135 426 1,346 4,256 13,458 FHWA RD-77-108
Traffic Noise Prediction Model
Noise Levels, dBA Hard Distance to Traffic Noise Level Contours, Feet FHWA RD-77-108
Traffic Noise Prediction Model
Speed
(Mph)
Distance
to CL K-Factor
Noise Analysis
Montiel Road Office Project
ATTACHMENT 6
SoundPLAN Data – On-site Generated Noise
9257 Montiel Road Office
SoundPLAN Data - HVAC
Level
Source name Reference Leq1 Kwall CI CT
dB(A) dB(A) dB(A) dB(A)
HVAC1 Unit 82 - - -
HVAC2 Unit 82 - - -
HVAC3 Unit 82 - - -
HVAC4 Unit 82 - - -
HVAC5 Unit 82 - - -
HVAC6 Unit 82 - - -
Corrections
HVAC
9257 Montiel Road Office
SoundPLAN Data - HVAC
Limit Level w/o NP Level w. NP Difference Conflict
No. X Y Floor Height Leq1 Leq1 Leq1 Leq1 Leq1
m dB(A) dB(A) dB(A) dB(A) dB(A)
1 489371.06 3665673.58 1.Fl 208.05 - 39.6 0 -39.6 -
2 489383.43 3665695.87 1.Fl 209.49 - 40.0 0 -40.0 -
3 489395.34 3665717.34 1.Fl 209.98 - 39.5 0 -39.5 -
4 489371.38 3665795.91 1.Fl 213.18 - 33.9 0 -33.9 -
5 489413.86 3665772.59 1.Fl 212.93 - 36.1 0 -36.1 -
6 489465.29 3665745.76 1.Fl 211.81 - 37.1 0 -37.1 -
7 489504.90 3665727.56 1.Fl 211.46 - 36.3 0 -36.3 -
8 489532.05 3665711.27 1.Fl 210.55 - 35.3 0 -35.3 -
9 489559.83 3665696.89 1.Fl 209.93 - 34.0 0 -34.0 -
10 489595.29 3665679.96 1.Fl 208.36 - 32.3 0 -32.3 -
11 489478.70 3665669.74 1.Fl 207.54 - 40.1 0 -40.1 -
12 489458.26 3665631.09 1.Fl 207.44 - 38.4 0 -38.4 -
Coordinates
in meter
Receivers
9257 Montiel Road Office
SoundPLAN Data - HVAC
Level w/o NP Level w. NP
Source name Leq1 Leq1
dB(A) dB(A)
1 1.Fl 39.6 0.0
HVAC1 37.3 0
HVAC2 30.5 0
HVAC3 30.3 0
HVAC4 28.5 0
HVAC5 27.5 0
HVAC6 25.1 0
2 1.Fl 40.0 0.0
HVAC1 36.3 0
HVAC2 31.0 0
HVAC3 31.8 0
HVAC4 31.4 0
HVAC5 28.6 0
HVAC6 29.2 0
3 1.Fl 39.5 0.0
HVAC1 33.2 0
HVAC2 31.2 0
HVAC3 32.5 0
HVAC4 31.7 0
HVAC5 30.5 0
HVAC6 30.2 0
4 1.Fl 33.9 0.0
HVAC1 27.4 0
HVAC2 25.6 0
HVAC3 26.8 0
HVAC4 26.5 0
HVAC5 25.0 0
HVAC6 24.9 0
5 1.Fl 36.1 0.0
HVAC1 29.7 0
HVAC2 27.4 0
HVAC3 29.2 0
HVAC4 28.6 0
HVAC5 26.8 0
HVAC6 27.7 0
6 1.Fl 37.1 0.0
HVAC1 30.3 0
HVAC2 28.0 0
HVAC3 30.1 0
HVAC4 29.7 0
HVAC5 27.9 0
HVAC6 29.3 0
7 1.Fl 36.3 0.0
HVAC1 28.7 0
HVAC2 27.2 0
HVAC3 29.0 0
HVAC4 29.1 0
HVAC5 27.6 0
HVAC6 29.0 0
8 1.Fl 35.3 0.0
HVAC1 27.0 0
HVAC2 26.2 0
HVAC3 27.5 0
HVAC4 28.9 0
HVAC5 26.6 0
HVAC6 28.0 0
9 1.Fl 34.0 0.0
HVAC1 25.3 0
HVAC2 25.1 0
HVAC3 26.2 0
HVAC4 27.4 0
HVAC5 25.4 0
HVAC6 27.3 0
10 1.Fl 32.3 0.0
HVAC1 23.3 0
HVAC2 23.4 0
HVAC3 24.9 0
HVAC4 25.0 0
HVAC5 23.8 0
HVAC6 25.8 0
11 1.Fl 40.1 0.0
HVAC1 30.7 0
HVAC2 30.6 0
HVAC3 32.4 0
HVAC4 33.6 0
HVAC5 31.4 0
HVAC6 34.1 0
12 1.Fl 38.4 0.0
HVAC1 24.2 0
HVAC2 25.9 0
HVAC3 27.5 0
HVAC4 29.7 0
HVAC5 28.7 0
HVAC6 36.1 0
Contributions