HomeMy WebLinkAboutCT 2018-0006; LAGUNA DRIVE SUBDIVISION; NOISE TECHNICAL REPORT; 2018-09-01. .
Noise Technical Report
for
570 Laguna Drive
Carlsbad, California
Prepared for:
Brett Farrow
5 70 Laguna Drive
Carlsbad, California 92008
Prepared by:
DUDEK
605 Third Street
Encinitas, California 92024
Contact: Connor Burke
SEPTEMBER 2018
Section
Technical Noise Report
570 Laguna Drive
TABLE OF CONTENTS
Page No.
1 INTRODUCTION AND BACKGROUND ...................................................................... !
2 REGULATORY SETTING .............................................................................................. 9
3 EXISTING CONDITIONS ............................................................................................. 13
4 THRESHOLDS OF SIGNIFICANCE ........................................................................... 17
5 IMP ACT DISCUSSION .................................................................................................. 19
6 MITIGATION MEASURES ........................................................................................... 27
7 SUMMARY OF FINDINGS ........................................................................................... 29
8 REFERENCES ................................................................................................................. 31
FIGURES
1 Project Location ................................................................................................................... 5
2 Site Plan ............................................................................................................................... 7
3 Noise Measurement and Modeling Locations .................................................................. .15
TABLES
1 Land Use Compatibility for Community Noise Environments ......................................... 10
2 Allowable Noise Exposure1 ••••••••••••••••••••••••••••••.•••••••••••.•••••••••••••••••••••••••••••••••••••••••••••••••••• 11
3 Performance Standards for Non-Transportation Sources (As Measured at
Property Line of Source/Sensitive Use) ............................................................................. 12
4 Measured Noise Levels ...................................................................................................... 13
5 Construction Equipment Noise Emission Levels .............................................................. 20
6 Construction Noise Model Results Summary ................................................................... .21
7 Off-Site Traffic Noise Modeling Results .......................................................................... .23
8 On-Site Future Plus Project Traffic Noise Modeling Results ............................................ 23
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APPENDICES
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TABLE OF CONTENTS (CONTINUED)
A Noise Measurement Field Data
B Construction Noise Modeling Input and Output
C Traffic Noise Modeling Input and Output
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ACRONYMS AND ABBREVIATIONS
Acronym/Abbreviation Definition
Caltrans California Department of Transportation
CNEL Community Noise Equivalent Level
dB decibel
dBA A-weighted decibel
HVAC heating, ventilation, and air conditioning
Lctn day-night average noise level
leq equivalent noise level over a given period
MM Mitigation Measure
PPV peak particle velocity
project 570 Laguna Drive condominium project
RCNM Roadway Construction Noise Model
SANDAG San Diego Association of Governments
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1 INTRODUCTION AND BACKGROUND
This technical noise report evaluates the potential noise impacts during construction and operation
of the proposed 570 Laguna Drive condominium project (project). The project site is located on the
north side of Laguna Drive in the City of Carlsbad, California (Figure 1, Project Location).
Project Description
The proposed project includes the demolition of an ex1stmg office building and single-family
dwelling and construction of 13 new detached three-story, single family homes (average of 1,644
square feet each) with roof decks on an approximately 0.75-acre site. The lot will be subdivided into
13 individual air space site condominiums. All lots will have individual water, gas, electricity,
telecom, and sewer services that are brought into the site via the driveway, which will serve as a
shared access and mutual maintenance/utility easement. There are no common areas proposed as part
of the project. The project emphasizes sustainability and walkability by recognizing its location as
not being car dependent with mass transit nearby. Garage spaces are provided and will include a lift
to allow for a second private vehicle. The proposed project also includes an open space easement and
a 25-foot public access easement within the open space. The proposed project would remove non-
native plants in the wetland buffer and restoration of this area with native plants. While not formally
required by the Fire Department, there is a fuel modification zone (FMZ) B-3 within a portion of the
open space and public access easement. The site plan for the proposed project is provided in
Figure 2.
Noise Characteristics
Sound is mechanical energy transmitted by pressure waves in a compressible medium, such as
air. Noise is defined as sound that is loud, unpleasant, unexpected, or undesired. The sound-
pressure level has become the most common descriptor used to characterize the loudness of an
ambient sound level. The unit of measurement of sound pressure is a decibel (dB). Under
controlled conditions in an acoustics laboratory, the trained, healthy human ear is able to discern
changes in sound levels of 1 dB when exposed to steady, single-frequency signals in the mid-
frequency range. Outside such controlled conditions, the trained ear can detect changes of 2 dB
in normal environmental noise. It is widely accepted that the average healthy ear, however, can
barely perceive noise level changes of 3 dB. A change of 5 dB is readily perceptible, and a
change of 10 dB is perceived as twice or half as loud (Caltrans 2013a). A doubling of sound
energy results in a 3 dB increase in sound, which means that a doubling of sound energy (e.g.,
doubling the number of daily trips along a given road) would result in a barely perceptible
change in sound level.
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Sound may be described in terms of level or amplitude (measured in decibels), frequency or
pitch (measured in hertz, or cycles per second), and duration (measured in seconds or minutes).
Because the human ear is not equally sensitive to sound at all frequencies, a special frequency-
dependent rating scale is used to relate noise to human sensitivity. The A-weighted decibel scale
(dBA) performs this compensation by discriminating against low and very high frequencies in a
manner approximating the sensitivity of the human ear.
Several descriptors of noise (noise metrics) exist to help predict average community reactions to
the adverse effects of environmental noise, including traffic-generated noise. These descriptors
include the equivalent noise level over a given period (Leq), the statistical sound level (Ln), the
day-night average noise level (Ldn), and the Community Noise Equivalent Level (CNEL). Each
of these descriptors uses units of dBA.
Leg is a sound energy level averaged over a specified time period (typically no less than 15
minutes for environmental studies). Leq is a single numerical value that represents the amount of
variable sound energy received by a receptor during a time interval. For example, a I -hour Leq
measurement would represent the average amount of energy contained in all the noise that
occurred in that hour. Leg is an effective noise descriptor because of its ability to assess the total
time-varying effects of noise on sensitive receptors. Lmax is the greatest sound level measured
during a designated time interval or event.
Unlike the Leq metrics, Ldn and CNEL metrics always represent 24-hour periods, usually on an
annualized basis. Ldn and CNEL also differ from Leq because they apply a time-weighted factor
designed to emphasize noise events that occur during the evening and nighttime hours (when
speech and sleep disturbance is of more concern). "Time weighted" refers to the fact that Ldn and
CNEL penalize noise that occurs during certain sensitive periods. In the case of CNEL, noise
occurring during the daytime (7 a.m. to 7 p.m.) receives no penalty. Noise during the evening (7
p.m. to 10 p.m.) is penalized by adding 5 dB, and nighttime (10 p.m. to 7 a.m.) noise is penalized
by adding 10 dB. Lein differs from CNEL in that the daytime period is defined as 7 a.m. to 10
p.m., thus eliminating the evening period. Ldn and CNEL are the predominant criteria used to
measure roadway noise affecting residential receptors. These two metrics generally differ from
one another by no more than 0.5 to 1 dB.
Vibration is the movement of mass over time. It is described in terms of frequency and amplitude
and, unlike sound, there is no standard way of measuring and reporting amplitude. Vibration can
be described in units of velocity (inches per second) or discussed in decibel units to compress the
range of numbers required to describe vibration. Vibration impacts to buildings are generally
discussed in terms of peak particle velocity (PPV) that describes particle movement over time (in
terms of physical displacement of mass). For purposes of this analysis, PPV will be used to
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describe all vibration for ease of reading and companson. Vibration can impact people,
structures, and sensitive equipment (Caltrans 2013b). Common sources of vibration within
communities include construction activities and railroads. Groundbome vibration generated by
construction projects is usually highest during pile driving, rock blasting, soil compacting, jack
hammering, and demolition-related activities. Next to pile driving, grading activity has the
greatest potential for vibration impacts if large bulldozers, large trucks, or other heavy equipment
are used. The maximum vibration level standard used by the California Department of
Transportation (Caltrans) for the prevention of structural damage to typical residential buildings
is 0.2 inches per second PPV (Caltrans 2013b).
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,,., I Jill
'3 Project Boundary
I!!
~u:aVkt• ~m .. .,.
SOURCE SanGIS 2017 NAIP 2016
m
f.'l
Mexico
1000 2 000 DUDEK ' ---==--~==-Feet
FIGURE 1
Project Location
5701580 Laguna Drive
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BUENA VISTA
LAGOON
,-
1
I
SOURCE Brett Farrow Architect. Inc .. 2018
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DIST. 511)
DIST.a.
10 0 20 ~!'
SCALE: 1"=20'
40 I
FIGURE 2
Site Plan
570/580 Laguna Dnve
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2 REGULATORY SETTING
The project site is located in the City of Carlsbad (City). The following guidance relating to
noise is relevant to the proposed project.
City of Carlsbad Noise Guidelines Manual
The City's Noise Guidelines Manual is primarily intended to address community noise issues
related to land use. The City's Noise Guidelines Manual summarizes the City's General Plan
Noise Element policies, provides a distillation of the science of noise, explains procedures for the
processing of a project, lists preferred methods for the mitigation of noise, and presents a
preferred noise report format. Additionally, the City's Noise Guidelines Manual lists typical
conditions of approval relative to noise control (City of Carlsbad 1994). The City's Noise
Guidelines Manual does not address noise issues such as animal noise, noise from parties and
loud gatherings, motor vehicle noise, or general nuisance noise, for which the best resource is the
Carlsbad Municipal Code (Carlsbad Municipal Code, Chapter 8.48, Noise).
City of Carlsbad Municipal Code
Carlsbad Municipal Code Chapter 8.48 outlines regulations for limitation. of hours for
construction (i.e., the erection, demolition, alteration, or repair of any building or structure or the
grading or excavation of land) that creates disturbing, excessive, or offensive noise. Construction
can occur Monday through Friday from 7 a.m. to 6 p.m., and Saturday 8 a.m. to 6 p.m.; no work
can be conducted on Sundays or on federal holidays. Carlsbad Municipal Code Chapter 8.48 also
outlines exceptions that may be granted by the City for circumstances such as emergency repairs
required to protect the health and safety of the community.
City of Carlsbad General Plan Noise Standards
The Noise Element of the City's General Plan (City of Carlsbad 2015) includes several standards
for noise that are applicable to the proposed project, as discussed below.
Community Noise Exposure
Table 1, Land Use Compatibility for Community Noise Environments (reproduced from City of
Carlsbad 2015, Table 5-1), presents the community noise exposure matrix, establishing criteria
the City uses to evaluate land use compatibility based on noise emanating from all sources.
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Table 1
Land Use Compatibility for Community Noise Environments
Land Use Caregory
Rtsick-ntial-
in le Fnmily
RK1dmtinl
Multiple Family
Transient Lodging
Moteb, Hott>~
!lchools, Uhrarie$,
(:hurcht!,\, Hrupit3l',
Nursln Homes
Audit01 iun\$,
Conctrt
Spom ren:i,
Outdoor
l'l:i}'groun,h.
Perk)
Gou Courser., Rklinl(
$1ahl~ \\'at.:-r
Recreation. CA:'meteries
Ollke 8u1Wint1 . Bu in~
Conun~n:il and
Pmfe.,ional
lndu\tri.,~ M:mul;,cturing.
Utiliti~ A ·culture
Exterior Day/Night Noise Levels
DNL or Ldn , dB
55 60 65 70 75 80
Source: City of Carlsbad 2015, Noise Element. Table 5-1.
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INTERPRE1'A1'ION
Nonrully Acupt.ible.
Specihed land ust Is utisfactol'}',
basro upoo Uw uumption Uiat
any hlliltllug,. imulvi.-d aie of
nnnn:al -~ncntion.tl C'Clfl'lilruciion,
vmhout any spec,31 nob.-11uul.111on
requin?mmts
C ond11ion.illy Accepl:&ble·
New oon~ruct1on or de\'t.'lopnien1
should be undtrtaken onl>• after a
J~u1led a1111l}')is of the noi
reduct ion requinmmls i, mad.:
amJ needed noi'II! in~ulation
ftaturca incluJcd in the d<'Si1tn.
orm~lly Una eptable.
N~ oonstrnct1011 or d evelopment
~hnuld S,.."'!ll'mlly Ix> J1M"oursgoo. Ii
IWW cno lrtJCIICIII OI W/\l~l11pnwn1
Joes rro«td. a derailed an.aly i o(
the no1r.t reduction rcqu1rcmcn1s
mwt br mad, and nudcd nase
1rn.ula1to11 lealure> mclutk'tl Ill the
Jcs1gr -Clearly Unaccepwhle:
"1tw ooostruction or dt\'eloprnent
durly <hould not be under1akcn.
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Allowable Noise Exposure
Technical Noise Report
570 Laguna Drive
Table 2, Allowable Noise Exposure (reproduced from City of Carlsbad 2015, Table 5-2),
presents acceptable limits of noise for various land uses for both exterior and interior
environments from transportation sources. Note that Table 1 provides standards to help the City
establish the appropriateness of locating specific uses in noise-sensitive environments, and Table
2 provides standards that development must attain through noise attenuation measures.
The limits in Table 2 are based on guidelines provided by the California Office of Planning and
Research. As shown in Table 2, the allowable noise exposure for residential land uses is 60 dBA
CNEL in outdoor activity areas, and 45 dBA CNEL in habitable interior spaces (e.g., living
rooms, bedrooms). The 60 dBA CNEL outdoor activity area and 45 dBA CNEL indoor living
area standards would be applicable to the proposed project.
Land Use
Residential
Motels, Hotels
Table 2
Allowable Noise Exposure1
Outdoor Actlvlty2.3 Areas
(dBACNEL)
604
65
Hospitals, Residential Care Facilities, Schools, Libraries, Museums, 65
Churches, Day Care Facilities
Playgrounds, Parks, Recreation Uses 65
Commercial and Office Uses 65
Industrial Uses 70
Source: City of Carlsbad 2013, Table 5-2.
Interior Spaces (dBA
CNEL)
45
45
45
50
50
65
Development proposed within the McClellan-Palomar Airport Area of Influence shall also be subject to the noise compatibility policies
contained in the ALUCP [Airport Land Use Compatibility Plan].
For non-residential uses, where an outdoor activity area is not proposed, the standard does not apply. Where the location of outdoor
activity areas is unknown, the exterior noise level standard shall be applied to the property line of the receiving use.
Where it is not possible to reduce noise in outdoor activity areas to the allowable maximum, levels up to 5 dB higher may be allowed
provided that available exterior noise level reduction measures have been implemented and interior noise levels are in compliance with
this table.
An exterior noise exposure level of 65 dBA CNEL is allowable for residential uses in a mixed-use project and for residential uses within
the McClellan-Palomar Airport Area of Influence, pursuant to the noise compatibility policies contained in the ALUCP.
Table 3 (reproduced from City of Carlsbad 2015, Table 5-3) provides City standards for noise
from non-transportation noise sources, including on-site stationary equipment and machinery
such as heating, ventilation, and air conditioning (HV AC) equipment. These standards apply to
the noise sources themselves, as measured at the edge of the property line; noise caused by motor
vehicles traveling to and from the site is exempt from this standard.
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Table 3
Performance Standards for Non-Transportation Sources
(As Measured at Property Line of Source/Sensitive Use)
Daytime Nighttime
Noise Level Descriptor (7 A.M. to 10 P.M.) (10 P.M. to 7 A.M.)
Hourly leq, dB 55 45
Maximum Level, dB 75 65
Source: City of Carlsbad 2013, Table 5-3.
Note: Each of the noise levels specified above shall be lowered by 5 dB for simple tone noises, noises consisting primarily of speech or music,
or for recurring impulsive noises.
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3 EXISTING CONDITIONS
Existing Conditions
The project site occupies 0.75 acres and is located along the north side of Laguna Drive,
approximately 0.5 miles west of Interstate 5 and 0.4 miles east of the Pacific Ocean (Figure 1 ).
The site is bordered by the Buena Vista Lagoon to the north/northwest and by Laguna Drive to
the south. Currently there exists a commercial office to the west, single-family residential to the
north and northeast, a commercial building to the east, and apartments to the south.
Noise measurements were taken on and near the project site in August 2018 to characterize the
existing noise environment. The daytime, short-term (1 hour or less) attended sound level
measurements were taken with a Rion NL-52 sound-level meter. This sound-level meter meets
the current American National Standards Institute standard for a Type 1 precision sound-level
meter. The calibration of the sound-level meter was verified before and after the measurements
were taken, and the measurements were conducted with the microphone positioned
approximately 5 feet above the ground.
Three noise measurement locations (STl , ST2, and ST3) that represent key potential sensitive
receptors or sensitive land uses were selected on, adjacent to , and near the project site. The
measurement locations are shown in Figure 3, Noise Measurement and Modeling Locations, and
the measured average noise levels and measurement locations are provided in Table 4, Measured
Noise Levels. Noise measurement data is also included in Appendix A, Noise Measurement
Field Data. The primary noise sources at the measurement locations consisted of traffic along the
adjacent roads.
Receptor
ST1
ST2
ST3
Location/Address
Table 4
Measured Noise Levels
Date
570 Laguna Drive, Carlsbad, California August 22, 2018
92008 (on site)
Apartments at 539 Laguna Drive, August 22, 2018
Carlsbad, California 92008
East of 2441 Buena Vista Circle, August22,2018
Carlsbad, California 92008
Time
01 :30 PM to 01 :45 PM
01 :50 PM to 02:05 PM
01 :05 PM to 01 :20 PM
Equivalent continuous sound level (time-average sound level) in A-weighted decibels
Maximum noise level in A-weighted decibels
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1..q1 Lm.2
(dBA) (dBA)
61.7 79.9
55 68.3
50.7 64.5
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~ Project Boundary
D Measurement Location L.,.,
8 Modeled Location
SOURCE SANGIS 2017 2018
D U D E K • O SO 100Feel
FIGURE 3
Noise Measurement and Modeling Locations
570/580 Laguna Drive
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4 THRESHOLDS OF SIGNIFICANCE
The following significance criteria are based on Appendix G of the California Environmental
Quality Act Guidelines (14 CCR 15000 et seq.) and will be used to determine the significance of
potential noise impacts. Impacts to noise would be significant if the proposed project would:
A. Expose persons to or generate noise levels in excess of standards established in the local
general plan or noise ordinance, or applicable standards of other agencies.
B. Expose persons to or generate excessive groundbome vibration or groundborne noise levels.
C. Result in a substantial permanent increase in ambient noise levels in the project vicinity
above levels existing without the project.
D. Result in a substantial temporary or periodic increase in ambient noise levels in the
project vicinity above levels existing without the project.
E. Expose people residing or working in the project area to excessive noise levels (for a
project located within an airport land use plan, or where such a plan has not been
adopted, within 2 miles of a public airport or public use airport).
F. Expose people residing or working in the project area to excessive noise levels (for a
project within the vicinity of a private airstrip).
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5 IMPACT DISCUSSION
A. Would the project expose persons to or generate noise levels in excess of
standards established in the local general plan or noise ordinance, or applicable standards
of other agencies?
Less Than Significant Impact with Mitigation Provided. Implementation of the proposed
project would result in two primary types of potential noise impacts: short-term (i.e., temporary)
noise during construction, and long-term noise during operation of the residential project.
Short-Term Construction Noise
Construction activities for the proposed project would include demolition of existing structures,
clearing and grubbing, mass excavation of soils, grading and trenching of the project site,
installation of utilities, construction of buildings, paving, and application of architectural
coatings. Noise impacts from construction activities associated with the proposed project would
be a function of the noise generated by construction equipment, locations of equipment and of
nearby land uses, and timing and duration of the construction activities. The nearest sensitive
receptors to the project site are single-family homes located east of the project site. Other
residential land uses are located farther north and south of the project site.
Construction noise is difficult to quantify because of the many variables involved, including the
specific equipment types, size of equipment used, percentage of time, condition of each piece of
equipment, and number of pieces of equipment that will actually operate on site. The range of
maximum noise levels for various types of construction equipment at a distance of 50 feet is
depicted in Table 5, Construction Equipment Noise Levels. The noise values represent maximum
noise generation, or full-power operation, of the equipment. As an example, a loader and two
dozers all operating at full power and relatively close together would generate a maximum sound
level of approximately 90 dBA at 50 feet from their operations. As the distance increases
between equipment and/or the distance increases between areas with simultaneous construction
activity, dispersion and distance attenuation reduce the effects of separate noise sources added
together. In addition, typical operating cycles may involve 2 minutes of full-power operation
followed by 3 or 4 minutes at lower power. The average noise level during construction activity
is generally lower, since maximum noise generation may only occur up to 50% of the time.
Noise levels from construction operations decrease at a rate of approximately 6 dBA per
doubling of distance from the source (FHW A 2008).
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Table 5
Construction Equipment Noise Emission Levels
Equipment Typical Sound Level (dBA) 50 Feet from Source
Roller 74
Concrete vibrator 76
Pump 76
Saw 76
Backhoe 80
Air compressor 81
Generator 81
Compactor 82
Concrete pump 82
Crane, mobile 83
Concrete mixer 85
Dozer 85
Grader 85
Impact wrench 85
Loader 85
Pneumatic tool 85
Jackhammer 88
Truck 88
Paver 89
The nearest point of major construction act1v1ties (i.e., excavation, utilities work, building
construction) to the closest noise-sensitive receivers (single-family residences located to the east)
would be approximately 28 feet, and the farthest distance from construction activity to the same
residences would be approximately 158 feet. For construction noise, a concept called the
"acoustic center" is useful in describing average noise levels across an entire construction period
for adjacent receivers. The acoustic center is the idealized point from which the energy sum of
all construction activity noise near and far would originate, and it is derived by taking the square
root of the product of the shortest distance multiplied by the farthest distance. For this project,
the acoustic center for construction was calculated to be 67 feet from the closest receiver. Thus,
the distance to the nearest construction activities would be approximately 28 feet, but the
distribution of construction activity across the site would typically occur with a center
approximately 67 feet or more away from the closest noise-sensitive receivers. The Federal
Highway Administration's Roadway Construction Noise Model (RCNM) (FHWA 2008) was
used to estimate construction noise levels at these noise-sensitive land uses. Although the model
was created by the Federal Highway Administration, the RCNM is often used for non-roadway
projects, because the same types of construction equipment used for roadway projects are also
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used for other project types. Input variables for the RCNM consist of the receiver/land use types,
the equipment type and number of each (e.g., two graders, a loader, a tractor), the duty cycle for
each piece of equipment (e.g., percentage of hours the equipment typically works per day), and
the distance from the noise-sensitive receiver. No topographical or structural shielding was
assumed in the modeling of construction noise. The noise levels from the proposed construction
activities are summarized in Table 6, Construction Noise Model Results Summary. The complete
set of RCNM input and output data for construction noise is provided in Appendix B,
Construction Noise Modeling Input and Output. As shown in the table, at the nearest residences,
noise levels would range from approximately 79 to 89 dBA Leq when construction would take
place at or near the project boundary. More typical construction noise levels at the adjacent
residences would range from approximately 71 to 83 dBA Leq
Table 6
Construction Noise Model Results Summary
l.qdBA
Nearest Receiver at 28 Typical Levels
Construction Phase Feet (67 feet from acoustic center)
Architectural Coating 79 71
Building Construction 83 80
Demolition 88 83
Grading 88 83
Paving 86 81
Site Preparation 89 81
dBA = A-weighted decibels; leq = equivalent sound level
The City regulates construction noise by restricting the allowable hours of construction.
Construction can occur Monday through Friday from 7 a.m. to 6 p.m. and Saturday 8 a.m. to 6
p.m.; no work can be conducted on Sundays or on federal holidays. If work were to occur outside
of the allowable hours, annoyance or sleep disturbance could result from construction noise;
also, due to the relatively limited distance to existing adjacent residences, construction noise
annoyance could result even during daytime hours, constituting a potentially significant short-
term noise impact. Mitigation measures (MM-NOI-1 and MM-NOI-2) have been prescribed, as
detailed in Section 6, below. With implementation of required mitigation, construction-related
noise levels would not exceed any standards and would not be substantially higher than existing
ambient daytime noise levels (as shown in Table 4). Therefore, temporary construction-related
noise impacts would be less than significant with mitigation.
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The proposed project would result in the creation of additional vehicle trips on local arterial
roadways (i.e., Laguna Drive), which could result in increased traffic noise levels at adjacent
noise-sensitive land uses. Additionally, the proposed residences would be exposed to noise from
traffic on Laguna Drive, which could result in noise levels in excess of City standards. In
addition to potential traffic noise impacts, noise from on-site HVAC equipment has the potential
to exceed applicable noise standards.
Off-Site Traffic Noise. The proposed project would create additional traffic along adjacent
roadways, in particular Laguna Drive. Appendix C, Traffic Noise Modeling Input and Output,
contains a spreadsheet with traffic volume data (average daily traffic) for Laguna Drive and
Buena Vista Circle. Because the traffic volumes on Buena Vista Circle represent between 10%
and 20% of the volumes on Laguna Drive, Dudek concluded that traffic noise modeling for
Buena Vista Circle would not be necessary to assess traffic noise contributions at the project site
(which are separated from Buena Vista by one row of commercial or residential lots). The San
Diego Association of Governments (SANDAG) model predicts that future traffic volumes along
Laguna Drive would decrease from existing levels (which is illustrated in Appendix C)
(SANDAG 2018). However, to be conservative, the annual growth identified by SANDAG for
the region was applied to the current traffic volumes on Laguna Drive to forecast traffic volumes
through the General Plan buildout year of 2035.
Potential noise effects from vehicular traffic were assessed using the Federal Highway
Administration's Traffic Noise Model version 2.5 (FHWA 2004). Information used in the model
included the roadway geometry, existing (year 2018), existing (year 2018) plus project, future
(year 2035) without project, and future (year 2035) with project traffic volumes (refer to
Appendix C) and posted traffic speeds. Noise levels were modeled at representative noise-
sensitive receivers STl and ST2, as shown in Figure 3. STl is representative of typical setback
distance for residences along the north side of Laguna Drive, and ST2 is representative of typical
setback distance for residences along the south side of Laguna Drive. The receivers were
modeled to be 5 feet above the local ground elevation. The noise model results are summarized
in Table 7, Off-Site Traffic Noise Modeling Results. The input and output files for the project are
provided in Appendix C. The City does not have a specific noise criterion for evaluating off-site
noise impacts to residences or noise-sensitive areas from project-related traffic. For the purposes
of this noise analysis, such impacts are considered significant when they cause an increase of 5
dB from existing noise levels or cause an exceedance of the 60 dBA CNEL noise threshold. An
increase or decrease in noise level of at least 5 dB is required before any noticeable change in
community response would be expected (Caltrans 2013a).
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Modeled Receiver#-
Description
ST1 -Typical residential setback
north side of Laguna Drive
ST2 -Typical residential setback
south side of Laguna Drive
Technical Noise Report
570 Laguna Drive
Table 7
Off-Site Traffic Noise Modeling Results
Existing Bulldout
Existing (2018)wlth (2035) without
(2018) Noise Project Noise Project Nol11
Level Level Level
(dBACNEL) (dBACNa) (dBACNEL)
59 59 59
57 57 58
Bulldout Maximum
(2035)with Project-
Project Nol11 Related
Level Noise Level
(dBACNEL) lncreue (dB)
59 0
58 0
Table 7 shows that the maximum noise level increase attributed to project-generated traffic
would be O dB (when rounded to whole numbers). There would be no measurable or audible
change, and the impact would be less than significant. No mitigation is required.
On-Site Traffic Noise. As discussed above, the proposed residences and associated exterior uses
are subject to the noise standard of 60 dBA CNEL. On-site traffic noise with the proposed
project was assessed using the Traffic Noise Model. The modeled on-site receiver locations
(shown in Figure 3) consisted of the yard area for the two proposed units closest to Laguna
Drive, and the noise measurement location used to calibrate the Traffic Noise Model (STI). The
results of the noise analysis for traffic noise levels at proposed on-site receivers is provided in
Table 8, On-Site Future Plus Project Traffic Noise Modeling Results.
Table 8
On-Site Future Plus Project Traffic Noise Modeling Results
Applicable Exterior Noise
Standard Traffic NolH Level
Modeled Receiver # -DescrlDtlon (dBACNEL) (dBACNEL)
ST1 -Measurement Location 60 59
(20 feet from edge of pavement)
R1 -Yard Area for Unit 13 60 58
R2 -Yard Area for Unit 9 60 56
As shown in Table 8, the results of the noise modeling indicate that on-site noise levels in outdoor
use areas (yards) of the site would range up to 58 dBA CNEL, and thus would not exceed City
noise standards. Impacts from on-site traffic noise exposure would be less than significant.
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On-Site Interior Traffic Noise. The City and state require that interior noise levels not exceed a
CNEL or Ldn of 45 dBA within the habitable rooms of residences. Typically, with the windows
open, building shells provide approximately 15 dB of noise reduction. Therefore, rooms exposed
to an exterior CNEL greater than 60 dBA could result in an interior CNEL greater than 45 dBA.
The State Building Code recognizes this relationship and, therefore, requires interior noise
studies when the exterior noise level is projected to exceed 60 dBA CNEL or Ldn• The data
shown in Table 8 indicate that the future noise levels would remain less than 60 dBA CNEL.
Thus, interior noise level impacts would be less than significant.
On-Site Mechanical Noise. Mechanical noise from HV AC equipment would occur as a result of
the proposed project. The details regarding the specific locations, quantity, or make/model of
HV AC equipment have not yet been developed, and, thus, are not available for analysis. HV AC
systems could be located at ground-floor level or could involve roof-mounted systems. Based on
the configuration of the residential structures on the site plan (Figure 2), the separation distance
between HVAC systems and the eastern site boundary (which is adjacent to existing residences)
could be as little as approximately 25 feet. The noise levels generated by HVAC equipment vary,
but typically range from approximately 50 dBA to 65 dBA at a distance of 50 feet (City of Santa
Ana 2010). For a single point source such as a piece of mechanical equipment, the sound level
normally decreases by approximately 6 dBA for each doubling of distance from the source. The
HV AC noise levels have the potential to exceed the City noise standard for stationary source
noise at residential uses (55 dBA Leq from 7 a.m. to 10 p.m., 45 dBA Leq from 10 p.m. to 7 a.m.)
at the nearest existing noise-sensitive receivers. In accordance with MM-NOI-3 as detailed in
Section 6, an acoustical analysis will be required prior to approval of final occupancy permits,
ensuring that noise from HV AC equipment is in compliance with the City of Carlsbad Municipal
Code noise standards.
B. Would the project expose persons to or generate excessive groundborne vibration or
groundborne noise levels?
Less Than Significant Impact. Construction activities that might expose people to excessive
groundbome vibration or groundbome noise could cause a potentially significant impact.
Groundbome vibration information related to construction activities has been collected by
Caltrans (Caltrans 2013b). Information from Caltrans indicates that transient vibrations (such as
construction activity) of approximately 0.035 inch per second PPV may be characterized as
barely perceptible, and vibration levels of 0.24 inch per second PPV may be characterized as
distinctly perceptible.
Groundbome vibration is typically attenuated over short distances. The heavier pieces of
construction equipment, such as bulldozers, would have peak particle velocities of approximately
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570 Laguna Drive
0.089 inches per second or less at a distance of 25 feet (DOT 2006). At the distance from the
nearest residence to major construction activities (approximately 28 feet) and with the
anticipated construction equipment, the peak particle velocity would be approximately 0.0751
inches per second. This vibration level would be just below the level considered barely
perceptible, and well below the level considered distinctly perceptible.
The major concern with regard to construction vibration is related to building damage. Pile
driving, blasting, or other special construction techniques would not be necessary for
construction of the proposed project; therefore, excessive groundbome vibration and
groundbome noise are not anticipated. In particular, construction vibration as a result of the
proposed project would not result in structural building damage, which typically occurs at
vibration levels of 0.5 inches per second or greater for buildings of reinforced-concrete, steel, or
timber construction, or 0.2 inches per second for typical residential construction. At the distance
from the nearest residence to major construction activities (approximately 28 feet) and with the
anticipated construction equipment, the peak particle velocity would be approximately 0.0751
inches per second, which is well below the damage threshold. Groundbome vibration would not
be associated with the proposed project following construction activities. Impacts related to
groundbome vibration would be less than significant. No mitigation is required.
The ongoing operation of the proposed project would not include the operation of any known
vibration sources. Therefore, a less-than-significant vibration impact is anticipated from
operation of the proposed project. No mitigation is required.
C. Would the project result in a substantial permanent increase in ambient noise levels in the
project vicinity above levels existing without the project?
Less Than Significant Impact with Mitigation Incorporated. As discussed under item (A),
long-term operational noise would result from the various project components, including off-site
traffic noise along adjacent roadways and mechanical noise. Also as discussed under item (A),
mitigation is identified to ensure that operation of the proposed project would not exceed
applicable noise standards or otherwise result in a substantial permanent increase in ambient
noise levels. Upon implementation of MM-NOI-3, operational noise impacts would be less than
significant with mitigation incorporated.
D. Would the project result in a substantial temporary or periodic increase in ambient noise
levels in the project vicinity above levels existing without the project?
Less Than Significant Impact. As discussed under item (A), the proposed project would result
in temporary noise increases during the project construction period. The temporary increases in
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ambient noise levels would vary depending on the location of the construction activities and the
type of equipment being used. The estimated construction noise levels at nearby noise-sensitive
land uses are summarized in Table 6. Temporary noise increases at adjacent existing and future
noise-sensitive land uses from construction activities are considered potentially significant;
however, with the implementation of MM-NOI-1 and MM-NOI-2, temporary noise impacts
from construction activities would be less than significant. No further mitigation is required.
E. For a project located within an airport land use plan or, where such a plan has not been
adopted, within two miles of a public airport or public use airport, would the project expose
people residing or working in the project area to excessive noise levels?
Less Than Significant Impact. The nearest airport is McClellan-Palomar Airport, located
approximately 4.9 miles southeast of the project site. Based on the McClellan-Palomar Airport
Land Use Compatibility Plan (San Diego County Airport Land Use Commission 2010), the
project site is located approximately 4 miles outside of the airport's 60 dBA CNEL noise
contour. As such, less-than-significant impacts from airport/aircraft noise would occur. No
mitigation is required.
F. For a project within the vicinity of a private airstrip, would the project expose people
residing or working in the project area to excessive noise levels?
No Impact. There are no private airstrips within the vicinity of the project site. No impacts
would occur.
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6 MITIGATION MEASURES
The following mitigation measures would ensure that construction-and operation-related noise
levels created by the proposed project would be less than significant.
Construction
MM-NOI-1 Construction activities shall take place during the permitted time and day per
Carlsbad Municipal Code Chapter 8.48. The applicant shall ensure that
construction activities for the proposed project are limited to the hours from 7
a.m. to 6 p.m. Monday through Friday, and 8 a.m. to 6 p.m. on Saturdays; no
work shall be conducted on Sundays or on federal holidays. This condition shall
be listed on the project's final design to the satisfaction of the City of Carlsbad
Engineering Services Department.
MM-NOI-2 The City of Carlsbad shall require the applicant to adhere to the following
measures for all construction phases of the proposed project as a condition of
approving the grading permit:
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• The project contractor shall, to the extent feasible, schedule construction
activities to avoid the simultaneous operation of construction equipment so as
to minimize noise levels resulting from operating several pieces of high-noise-
emitting equipment.
• All construction equipment, fixed or mobile, shall be equipped with properly
operating and maintained mufflers. Enforcement shall be accomplished by
random field inspections by applicant personnel during construction activities,
to the satisfaction of the City of Carlsbad Engineering Services Department.
• Construction noise reduction methods, such as shutting off idling equipment,
constructing a temporary noise barrier, maximizing the distance between
construction equipment staging areas and adjacent residences, and using
electric air compressors and similar power tools rather than diesel equipment,
shall be used where feasible.
• During construction, stationary construction equipment shall be placed such
that emitted noise is directed away from or shielded from sensitive receptors.
• Construction hours, allowable workdays, and the phone number of the job
superintendent shall be clearly posted at all construction entrances to allow
surrounding property owners to contact the job superintendent if necessary. In
the event the City of Carlsbad receives a complaint, appropriate corrective
27
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September 2018
Operation
Technical Noise Report
570 Laguna Drive
actions shall be implemented and a report of the action provided to the
reporting party.
MM-NOI-3 Because heating, ventilation, and air conditioning (HVAC) equipment and other
mechanical equipment can generate noise that could affect surrounding sensitive
receptors, and because the details, specifications, and locations of this equipment
are not yet known, the project applicant shall retain an acoustical specialist to
review project construction-level plans to ensure that the equipment specifications
and plans for HV AC and other outdoor mechanical equipment incorporate
measures, such as the specification of quieter equipment or provision of acoustical
enclosures, that will not exceed relevant noise standards at nearby noise-sensitive
land uses ( e.g., residential). Prior to the commencement of construction, the
acoustical specialist shall certify in writing to the City of Carlsbad that the
equipment specifications and plans incorporate measures that will achieve the
relevant noise limits.
Level of Significance after Implementation of Mitigation Measures
The effectiveness of mitigation measures would vary from several decibels (which is a relatively
small change) to 10 or more decibels (which subjectively would be perceived as a substantial
change), depending on the specific equipment, and the specific locations of the noise sources and
the receivers. Installation of a noise barrier for HV AC equipment, for example, would vary in
effectiveness depending on the degree to which the line-of-sight between the source and receiver
is broken, and typically ranges as a reduction of 5 to 10 dB. Installation of more effective
silencers on construction equipment could range in a reduction from several decibels to well over
10 dB. Reduction of idling construction equipment could reduce overall noise levels from barely
any reduction to several decibels. Cumulatively, however, these measures would result in
substantial decreases in noise from construction and operation. With implementation of MM-
NOI-1 through MM-NOI-3, noise impacts from project-related construction and operation would
be less than significant. No further mitigation is required.
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7 SUMMARY OF FINDINGS
A noise and vibration study was conducted for the proposed 570 Laguna Drive Condominium
Project. The results indicate that, with implementation of required MM-NOI-1 through MM-
NOI-3, potential impacts during construction and operation would be less than significant. No
further mitigation is required.
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8 REFERENCES
Technical Noise Report
570 Laguna Drive
Caltrans (California Department of Transportation). 2013a. Technical Noise Supplement to the
Traffic Noise Analysis Protocol. September 2013.
Caltrans. 2013b. Transportation and Construction Vibration Guidance Manual. Division of
Environmental Analysis, Environmental Engineering, Hazardous Waste, Air, Noise,
Paleontology Office. Sacramento, California. September 2013.
City of Carlsbad. 1994. City of Carlsbad Noise Guidelines Manual. Prepared by Nolte and
Associates. 1994; amended July 2013.
City of Carlsbad. 2013. Carlsbad Municipal Code, Chapter 8.48, Noise.
City of Carlsbad. 2015. Carlsbad General Plan Noise Element. September 2015.
City of Santa Ana. 2010. City of Santa Ana Transit Zoning Code (SD 84A and SD 84B) Final
Environmental Impact Report (SCH No. 2006071100).
DOT (U.S. Department of Transportation, Federal Transit Administration). 2006. Transit Noise
and Vibration Impact Assessment. May 2006.
FHWA (Federal Highway Administration). 2004. FHWA Traffic Noise Model Version 2.5.
FHW A. 2008. Roadway Construction Noise Model (RCNM), Software Version 1.1. U.S.
Department of Transportation, Research and Innovative Technology Administration,
John A. Volpe National Transportation Systems Center, Environmental Measurement and
Modeling Division. Washington, D.C. December 8, 2008.
San Diego County Airport Land Use Commission. 2010. McClellan-Palomar Airport Land Use
Compatibility Plan. Adopted January 25, 2010.
SANDAG (San Diego Association of Governments). 2018. "Transportation Forecast Information
Center." Series 13, Forecast Year 2035. Accessed August 2018. http://tfic.sandag.org/.
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APPENDIX A
Noise Measurement Field Data
DUDEK
CREATOR Of KERATA TECHNOLOGY I I • • • • e •
Field Noise Measurement Data
Record: 1069 ---
Project Name
Project#
0bserver(s)
Date
Meteorological Conditions
Temp (F)
Humidity % (R.H.)
Wind
Wind Speed (MPH)
Wind Direction
Sky
570Laguna
10746
Connor Burl<e
2018-08-22
75
64
Light
5
East
Sunny
---
Instrument and Calibrator Information
Instrument Name List
Instrument Name
Instrument Name Lookup Key
Manufacturer
Model
Serial Number
Calibrator Name
Calibrator Name
Calibrator Name Lookup Key
Calibrator Manufacturer
Calibrator Model
Calibrator Serial #
Pre-Test (dBA SPL)
Post-Test (dBA SPL)
Windscreen
Weighting?
Slow/Fast?
ANSI?
(ENC) Rion NL-52
(ENC) Rion NL-52
(ENC) Rion NL-52
Rion
NL-52
553896
(ENC) LO CAL 150
(ENC) LO CAL 150
(ENC) LO CAL 150
Larson Davis
LDCAL150
5152
94
94
Yes
A-WTD
Slow
Yes
---
Recordings
Record#
Site ID
1
ST3
Site Location Lat/Long
Begin (Time)
33.165818, -117.351583
13:05:00
End (Time)
Leq
Lmax
Lmin
Other Lx?
L90
L50
L 10
Other Lx (Specify Metric)
13:20:00
50 7
64.5
44.9
L90, L50, L10
45.7
47.4
52.4
L
Primary Noise Source Distant traffic
Other Noise Sources (Background) Birds, Distant Aircraft, Distant Conversations I Yelling, Distant Traffic, Rustling Leaves
Other Noise Sources Additional Description Backyard constroction at comer of Laguna. Hand Saw
Is the same instrument and calibrator being used Yes
as previously noted?
Are the meteorological conditions the same as Yes
Page 114
DUDEK
CREATOR OF KERATA TECHNOLOGY FIELD DATA REPORT
previously noted?
Description / Photos
Comments I Description
Recordings
Record#
Site ID
Site Location Lat/Long
Begin (Time)
End (Time)
Leq
Lmax
Lmin
Other Lx?
L90
L50
L 10
----
Other Lx (Specify Metric)
Primary Noise Source
Other Noise Sources (Background)
Other Noise Sources Additional Description
Is the same instrument and calibrator being used
as previously noted?
Are the meteorological conditions the same as
previously noted?
Faangwest
2
ST1
33, 165243, -117,352178
13'30:00
13:45:00
61 7
79,9
45 1
L90, L50, L 10
46 8
53,5
63,5
L
Traffic
Birds, Distant Aircraft, Distant Conversations I Yelling, Distant Traffic, Rustling Leaves
Heavy dirt trucks. 2 mopeds
Yes
Yes
Page 214
DUDEK
CREATOR OF KERATA TECHNOLOGY
Source Info and Traffic Counts
Number of Lanes
Lane Width (feet)
Roadway Width (feet)
Roadway Width (m)
Distance to Roadway (feet)
Distance to Roadway (m)
Distance Measured to Centerline or Edge of
Pavement?
Estimated Vehicle Speed (MPH)
2
10
20
6. 1
20
6.1
Edge of Pavement
25
' Traffic Counts ---
Vehicle Count Summary
Counting Both Directions?
Count Duration (minutes)
Vehicle Count Tally
Select Method for Vehicle Counts
Number of Vehicles . Autos
i Number of Vehicles • Medium Trucks
Number of Vehicles • Heavy Trucks
Number of Vehicles • Buses
Number of Vehicles • Motorcyles
A 100, MT 3, HT0, B 0, MC 2
Yes
0
Enter Manually
100
3
0
0
2
Re-cordings ----
Record#
Site ID
Site Location Lat/Long
Begin (Time)
End (Time)
Leq
Lmax
Lmin
Other Lx?
L90
L50
L10
Other Lx (Specify Metric)
Primary Noise Source
Other Noise Sources (Background)
Other Noise Sources Additional Description
Is the same instrument and calibrator being used
as previously noted?
Are the meteorological conditions the same as
previously noted?
1 Description / Photos
3
ST2
33.165119, -117.352314
13:50:00
14:05:00
55
68.3
45.4
L90, L50, L10
47.1
52.1
57.8
L
Traffic
Birds, Distant Aircraft, Distant Traffic, Rustling Leaves
Trash truck down the street. Vehicles entering apartment garage
Yes
Yes
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DUDEI<
CREATOR OF KEltATA TECHNOLOGY FIELD DATA REPORT
Site Photos
Comments I Description Facing north towards Laguna.
Page 414
APPENDIX B
Construction Noise Modeling
Input and Output
Report date:
Case Description:
Description
Nearest Receiver 28'
Description
Compressor (air)
Equipment
Compressor (air)
Description
Typical Receiver 67'
Description
Compressor (air)
Equipment
Compressor (air)
Report date:
Case Description:
Roadway Construction Noise Model (RCNM),Version 1.1
8/24/2018
570 Laguna Dr_Architectural Coating
Land Use
Residential
Total
Land Use
Residential
Total
8/24/2018
----Receptor #1 ----
Baselines (dBA)
Daytime
65
Impact
Device
No
Evening Night
60 55
Equipment
Spec Actual
Lmax Lmax
Usage(%) (dBA) (dBA)
40 77.7
Results
Receptor Estimated
Distance Shielding
(feet) (dBA)
28 0
Calculated (dBA)
Day
Lmax
78.7 N/A
78.7 N/A
Noise Limits (dBA)
Evening
*Lmax Leq
82.7
82.7
Leq
N/A
N/A
*Calculated Lmax is the Loudest value.
----Receptor #2 ----
Baselines (dBA)
Daytime
65
Impact
Device
No
Evening Night
60 55
Equipment
Spec Actual
Lmax Lmax
Usage(%) (dBA) (dBA)
40 77.7
Results
Lmax
N/A
N/A
Leq
N/A
N/A
Receptor Estimated
Distance Shielding
(feet) (dBA)
67 0
Calculated (dBA)
Day
Lmax
71.1 N/A
71.1 N/A
Noise Limits (dBA)
Evening
*Lmax Leq
75.1
75.1
Leq
N/A
N/A
*Calculated Lmax is the Loudest value.
Lmax
N/A
N/A
Leq
N/A
N/A
Roadway Construction Noise Model (RCNM),Version 1.1
570 Laguna Dr_Building Construction
Night
Lmax
N/A
N/A
Night
Lmax
N/A
N/A
----Receptor #1 ----
Baselines (dBA)
Description Land Use Daytime Evening Night
Nearest Receiver 28' Residential 65 60 55
Equipment
Spec Actual Receptor Estimated
Impact Lmax Lmax Distance Shielding
Description Device Usage(%) (dBA) (dBA) (feet) (dBA)
Man Lift No 20 74.7 28 0
Man Lift No 20 74.7 28 0
Crane No 16 80.6 40 0
Front End Loader No 40 79.1 40 0
Tractor No 40 84 50 0
Results
Calculated (dBA) Noise Limits (dBA)
Day Evening Night
Equipment *Lmax Leq Lmax Leq Lmax Leq Lmax
Man Lift 79.7 72.7 N/A N/A N/A N/A N/A
Man Lift 79.7 72.7 N/A N/A N/A N/A N/A
Crane 82.5 74.5 N/A N/A N/A N/A N/A
Front End Loader 81 77.1 N/A N/A N/A N/A N/A
Tractor 84 80 N/A N/A N/A N/A N/A
Total 84 83.4 N/A N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
----Receptor #2 ----
Baselines (dBA)
Description Land Use Daytime Evening Night
Typical Receiver 67' Residential 65 60 55
Equipment
Spec Actual Receptor Estimated
Impact Lmax Lmax Distance Shielding
Description Device Usage(%) (dBA) (dBA) (feet) (dBA)
Man Lift No 20 74.7 67 0
Man Lift No 20 74.7 67 0
Crane No 16 80.6 67 0
Front End Loader No 40 79.1 67 0
Tractor No 40 84 67 0
Results
Calculated (dBA) Noise Limits (dBA)
Day Evening Night
Equipment *Lmax Leq Lmax Leq Lmax Leq Lmax
Man Lift 72.2 65.2 N/A N/A N/A N/A N/A
Man Lift 72.2 65.2 N/A N/A N/A N/A N/A
Crane 78 70 N/A N/A N/A N/A N/A
Front End Loader 76.6 72.6 N/A N/A N/A N/A N/A
Tractor 81.5 77.5 N/A N/A N/A N/A N/A
Total 81.5 79.6 N/A N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
Roadway Construction Noise Model (RCNM),Version 1.1
Report date: 8/24/2018
Case Description: 570 Laguna Dr _Demolition
----Receptor #1 ----
Baselines (dBA)
Description Land Use Daytime Evening Night
Nearest Receiver 28' Residential 65 60 55
Equipment
Spec Actual Receptor Estimated
Impact Lmax Lmax Distance Shielding
Description Device Usage(%) (dBA) (dBA) (feet) (dBA)
Front End Loader No 40 79.1 28 0
Dozer No 40 81.7 28 0
Tractor No 40 84 50 0
Concrete Saw No 20 89.6 50 0
Results
Calculated (dBA) Noise Limits (dBA)
Day Evening Night
Equipment *Lmax Leq Lmax Leq Lmax Leq Lmax
Front End Loader 84.1 80.2 N/A N/A N/A N/A N/A
Dozer 86.7 82.7 N/A N/A N/A N/A N/A
Tractor 84 80 N/A N/A N/A N/A N/A
Concrete Saw 89.6 82.6 N/A N/A N/A N/A N/A
Total 89.6 87.6 N/A N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
----Receptor #2 ----
Baselines (dBA)
Description Land Use Daytime Evening Night
Typical Receiver 67' Residential 65 60 55
Equipment
Spec Actual Receptor Estimated
Impact Lmax Lmax Distance Shielding
Description Device Usage(%) (dBA) (dBA) (feet) (dBA)
Front End Loader No 40 79.1 67 0
Dozer No 40 81.7 67 0
Tractor No 40 84 67 0
Concrete Saw No 20 89.6 67 0
Results
Calculated (dBA) Noise Limits (dBA)
Day Evening Night
Equipment *Lmax Leq Lmax Leq Lmax Leq Lmax
Front End Loader 76.6 72.6 N/A N/A N/A N/A N/A
Dozer 79.1 75.1 N/A N/A N/A N/A N/A
Tractor 81.5 77.5 N/A N/A N/A N/A N/A
Concrete Saw 87 80 N/A N/A N/A N/A N/A
Total 87 83.2 N/A N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
Roadway Construction Noise Model (RCNM),Version 1.1
Report date: 8/24/2018
Case Description: 570 Laguna Dr_Grading
----Receptor #1 ----
Baselines (dBA)
Description Land Use Daytime Evening Night
Nearest Receiver 28' Residential 65 60 55
Equipment
Spec Actual Receptor Estimated
Impact Lmax Lmax Distance Shielding
Description Device Usage(%) (dBA) (dBA) (feet) (dBA)
Front End Loader No 40 79.1 28 0
Dozer No 40 81.7 28 0
Tractor No 40 84 50 0
Concrete Saw No 20 89.6 50 0
Results
Calculated (dBA) Noise Limits (dBA)
Day Evening Night
Equipment *Lmax Leq Lmax Leq Lmax Leq Lmax
Front End Loader 84.1 80.2 N/A N/A N/A N/A N/A
Dozer 86.7 82.7 N/A N/A N/A N/A N/A
Tractor 84 80 N/A N/A N/A N/A N/A
Concrete Saw 89.6 82.6 N/A N/A N/A N/A N/A
Total 89.6 87.6 N/A N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
----Receptor #2 ----
Description
Typical Receiver 67'
Description
Front End Loader
Dozer
Tractor
Concrete Saw
Equipment
Front End Loader
Dozer
Tractor
Concrete Saw
Report date:
Case Description:
Description
Nearest Receiver 28'
Description
Concrete Mixer Truck
Concrete Mixer Truck
Concrete Mixer Truck
Concrete Mixer Truck
Paver
Roller
Tractor
Baselines (dBA)
Land Use Daytime Evening Night
Residential 65 60 55
Equipment
Spec Actual Receptor Estimated
Impact Lmax Lmax Distance Shielding
Device Usage(%) (dBA) (dBA) (feet) (dBA)
No 40 79.1 67 0
No 40 81.7 67 0
No 40 84 67 0
No 20 89.6 67 0
Results
Calculated (dBA) Noise Limits (dBA)
Day Evening
*Lmax Leq Lmax Leq Lmax Leq
76.6 72.6 N/A N/A N/A N/A
79.1 75.1 N/A N/A N/A N/A
81.5 77.5 N/A N/A N/A N/A
87 80 N/A N/A N/A N/A
Total 87 83.2 N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
Roadway Construction Noise Model (RCNM),Version 1.1
8/24/2018
570 Laguna Dr _Paving
----Receptor #1 ----
Baselines (dBA)
Land Use
Residential
Daytime
65
Evening Night
60 55
Equipment
Spec Actual
Impact Lmax Lmax
Device Usage(%) (dBA) (dBA)
No 40 78.8
No 40 78.8
No 40 78.8
No 40 78.8
No 50 77.2
No 20 80
No 40 84
Results
Receptor Estimated
Distance Shielding
(feet) (dBA)
28 0
28 0
50 0
50 0
60 0
60 0
60 0
Night
Lmax
N/A
N/A
N/A
N/A
N/A
Calculated (dBA) Noise Limits (dBA)
Day Evening Night
Equipment *Lmax Leq Lmax Leq Lmax Leq Lmax
Concrete Mixer Truck 83.8 79.9 N/A N/A N/A N/A N/A
Concrete Mixer Truck 83.8 79.9 N/A N/A N/A N/A N/A
Concrete Mixer Truck 78.8 74.8 N/A N/A N/A N/A N/A
Concrete Mixer Truck 78.8 74.8 N/A N/A N/A N/A N/A
Paver 75.6 72.6 N/A N/A N/A N/A N/A
Roller 78.4 71.4 N/A N/A N/A N/A N/A
Tractor 82.4 78.4 N/A N/A N/A N/A N/A
Total 83.8 85.5 N/A N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
----Receptor #2 ----
Baselines (dBA)
Description Land Use Daytime Evening Night
Typical Receiver 67' Residential 65 60 55
Equipment
Spec Actual Receptor Estimated
Impact Lmax Lmax Distance Shielding
Description Device Usage(%) (dBA) (dBA) (feet) (dBA)
Concrete Mixer Truck No 40 78.8 100 0
Concrete Mixer Truck No 40 78.8 100 0
Concrete Mixer Truck No 40 78.8 67 0
Concrete Mixer Truck No 40 78.8 67 0
Paver No so 77.2 67 0
Roller No 20 80 67 0
Tractor No 40 84 67 0
Results
Calculated (dBA) Noise Limits (dBA)
Day Evening Night
Equipment *Lmax Leq Lmax Leq Lmax Leq Lmax
Concrete Mixer Truck 72.8 68.8 N/A N/A N/A N/A N/A
Concrete Mixer Truck 72.8 68.8 N/A N/A N/A N/A N/A
Concrete Mixer Truck 76.3 72.3 N/A N/A N/A N/A N/A
Concrete Mixer Truck 76.3 72.3 N/A N/A N/A N/A N/A
Paver 74.7 71.7 N/A N/A N/A N/A N/A
Roller 77.5 70.5 N/A N/A N/A N/A N/A
Tractor 81.5 77.5 N/A N/A N/A N/A N/A
Total 81.S 81.2 N/A N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
Roadway Construction Noise Model (RCNM),Version 1.1
Report date: 8/24/2018
Case Description: 570 Laguna Dr_Site Preparation
----Receptor #1 ----
Baselines (dBA)
Description Land Use Daytime Evening Night
Nearest Receiver 28' Residential 65 60 55
Equipment
Spec Actual Receptor Estimated
Impact Lmax Lmax Distance Shielding
Description Device Usage(%) (dBA) (dBA) (feet) (dBA)
Tractor No 40 84 28 0
Grader No 40 85 28 0
Results
Calculated (dBA) Noise Limits (dBA)
Day Evening Night
Equipment *Lmax Leq Lmax Leq Lmax Leq Lmax
Tractor 89 85.1 N/A N/A N/A N/A N/A
Grader 90 86.1 N/A N/A N/A N/A N/A
Total 90 88.6 N/A N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
----Receptor #2 ----
Baselines (dBA)
Description Land Use Daytime Evening Night
Typical Receiver 67' Residential 65 60 55
Equipment
Spec Actual Receptor Estimated
Impact Lmax Lmax Distance Shielding
Description Device Usage(%) (dBA) (dBA) (feet) (dBA)
Tractor No 40 84 67 0
Grader No 40 85 67 0
Results
Calculated (dBA) Noise Limits (dBA)
Day Evening Night
Equipment *Lmax Leq Lmax Leq Lmax Leq Lmax
Tractor 81.5 77.5 N/A N/A N/A N/A N/A
Grader 82.5 78.5 N/A N/A N/A N/A N/A
Total 82.5 81 N/A N/A N/A N/A N/A
*Calculated Lmax is the Loudest value.
APPENDIX C
Traffic Noise Modeling
Input and Output
1
ADT -SANDAG Series 13
Roadway Segment 2012
Laguna Drive (available from SANDAG)
State St to Buena Vista Cir 3,100
Buena VistaCir to Madison St 3,400
Buena Vista Circle (estimated from adjacent link volumes)
North of Laguna Drive (est. by subtracting volumes e/o &
w/o BVC on Laguna Drive) 300
North of Laguna Drive (est. using growth rate) 300
Source: SANDAG Series 13, Transportation Forecast Information Center
http://tfic.sandag.org/
2020 2035
3,200 2,900
3,500 3,600
300 700
300 700
I 2 I
ADT est. Using SANDAG
Growth Rate
2050 Growth Rate 2018 2035
3,000 0.40% 3,175 3,396
3,700 0.36% 3,475 3,695
700 300 299 --700 0.42% 308 331
RESULTS: SOUND LEVELS
Dudek
JVL
RESULTS: SOUND LEVELS
. PROJECT/CONTRACT:
RUN:
BARRIER DESIGN:
ATMOSPHERICS:
Receiver
Name
ST1
ST2
ST3
Dwelling Units
All Selected
All Impacted
All that meet NR Goal
No.
1
2
3
10746
Laguna Drive -Existing No Project
INPUT HEIGHTS
68 deg F, 50% RH
#DUs
1
1
1
Existing
LAeq1h
dBA
0.0
0.0
0.0
No Barrier
LAeq1h
Calculated Crit'n
dBA dBA
59.2
57.4
52.2
# DUs Noise Reduction
Min Avg Max
dB dB dB
3, 0.0 0.0'
O· 0.0 o.o·
0 00 0.0
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\existlng_no_proj
66
66
66
0.0
0.0
00
10746
5 September 2018
TNM 2.5
Calculated with TNM 2.5
Average pavement type shall be used unless
a State highway agency substantiates the use
of a different type with approval of FHWA.
Increase over existing Type
Impact
!With Barrier
jCalculated
ILAeq1h
Noise Reduction
!Calculated Goal Calculated Crit'n
Sub'I Inc
1dB dB dBA
59.2 10 --
574 10 --
52.2 10 --
1
dB dB
59.2 0.0
57 4 0.0
52.2 0.0
Calculated
minus
Goal
dB
8 -8.0
8 -8.0
8 -8.0
5Septembe
INPUT: ROADWAYS
Dudek
JVL
INPUT: ROADWAYS
PROJECT/CONTRACT: 10746
5 September 2018
TNM 2.5
RUN: Laguna Drive -Existing No Project
Roadway
Name
Laguna EB
Laguna WB
Points
Width Name
ft
12.0 West End
point2
point3
point4
points
East End
12.0 EastEnd
point8
point9
point10
point11
West End
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\existing_no_proj
No. Coordinates (pavement)
X Y Z
ft ft ft
1 0.0 44.0
2 100.0 44.0
3 200.0 44.0
4 300.0 44.0
5 400.0 44.0
6 500.0 44.0
7 500.0 56.0
8 400.0 56.0
9 300.0 56.0
10 200.0 56.0
11 100.0 56.0
12 0.0 56.0
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
10746
Average pavement type shall be used unless
a State highway agency substantiates the use
of a different type with the approval of FHWA
Flow Control Segment
Control Speed Percent Pvmt On
Device Constraint Vehicles Type Struct?
Affected
mph %
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
1 5 SE
INPUT: TRAFFIC FOR LAeq1 h Volumes 10746
Dudek 5 September 2018
JVL TNM 2.5
INPUT: TRAFFIC FOR LAeq1 h Volumes
PROJECT/CONTRACT: 10746
RUN: Laguna Drive -Existing No Project
Roadway Points
Name Name No. Segment
Autos MTrucks HTrucks Buses Motorcycles
V s V s V s V s V s
veh/hr .mph veh/hr mph veh/hr mph veh/hr mph veh/hr mph
Laguna EB West End 1 148 30 5 30 0 0 3 30 3 30
point2 2 148 30 5 30 0 0 3 30 3 30
point3 3 148 30 5 30 0 0 3 30 3 30
point4 4 148 30 5 30 0 0 3 30 3 30
points 5 148 30. 5 30 0 0 3 30 3 30
East End 6
Laguna WB East End 7 148 30 5 30 0 0 3 30 3 30
point8 8 148 30 5 30 0 0 3 30 3 30
point9 9 148 30' 5 30 0 0 3 30 3 30
point10 10 148 30 5 30 0 0 3 30 3 30
point11 11 , 148 30 5 30 0 0 3 30 3 30
West End 12
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\existing_no_proj 1
INPUT: RECEIVERS
1Dudek
JVL
INPUT: RECEIVERS
i PROJECT/CONTRACT:
RUN:
'Receiver
;Name
ST1
ST2
ST3
10746
Laguna Drive -Existing No Project
1 No. #DUs iCoordinates (ground)
1
2
3
X y
ft
180.0
100.0
375.0
ft
90.0
-5.0
200.0
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\existing_no_proj
z
ft
0.00
0.00
0.00
10746
5 September 2018
TNM2.5
Height
above
Ground
ft
4.92
4.92
4.92
Input Sound Levels and Criteria
Existing Impact Criteria I NR
LAeq1h LAeq1h .Sub'I Goal
dBA
0.00
0.00
0.00
dBA
1
66
66
66
dB
10.0
10.0
10.0
dB
Active
•in
'Cale.
8.0 Y
8.0 Y
8.0 Y
RESULTS: SOUND LEVELS
Dudek
JVL
RESULTS: SOUND LEVELS
PROJECT/CONTRACT:
RUN:
BARRIER DESIGN:
ATMOSPHERICS:
Receiver
Name
ST1
ST2
ST3
R1
R2
Dwelling Units
All Selected
All Impacted
All that meet NR Goal
10746
Laguna Drive -Existing with Project
INPUT HEIGHTS
68 deg F, 50% RH
No. #DUs Existing No Barrier
'LAeq1h LAeq1h
Calculated Crit'n
dBA dBA dBA
1 1 0.0 59.3
2 1 0.0 57 5
3 1 0.0 52 3
4 1 00 582
5 1 0.0 564
#DUs Noise Reduction
Min Avg Max
dB dB dB
5 0.0 0.0
0 0.0 0.0
0 0.0 0.0
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\existing_w_proj
66
66
66
66
66
00
0.0
00
10746
5 September 2018
TNM 2.5
Calculated with TNM 2.5
Average pavement type shall be used unless
a State highway agency substantiates the use
of a different type with approval of FHWA.
Increase over existing Type
Calculated Crit'n Impact
Sub'I Inc
dB dB
59.3 10 --
57.5 10 --
52.3 10 -
58.2 10 -
56.4 10 -
1
With Barrier
Calculated · Noise Reduction
LAeq1 h Calculated Goal
dBA dB dB
59.3 0.0
57 5 0.0
52.3 0.0
58.2 0.0
56.4 0.0
Calculated
minus
Goal
dB
8 -8.0
8 -8.0
8 -8.0
8 -8.0
8 -8.0
5Septembe
INPUT: ROADWAYS
Dudek
JVL
INPUT: ROADWAYS
PROJECT/CONTRACT: 10746
5 September 2018
TNM 2.5
RUN: Laguna Drive -Existing with Project
Roadway
Name
Laguna EB
Laguna WB
Points
Width Name
ft
12 0 West End
point2
point3
point4
point5
East End
12.0 East End
point8
point9
point10
point11
West End
C :\TNM25\PROGRAM\107 46 LAGUNA DRIVE\existing_w _proj
No. Coordinates (pavement)
X Y Z
ft ft ft
1 0.0 44.0
2 100.0 44.0
3 200.0 44.0
4 300.0 44.0
5 400.0 44.0
6 500.0 44.0
7 500.0 56.0
8 400.0 56.0
9 300.0 56.0
10 200.0 56.0
11 100.0 56.0
12 0.0 56.0
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
10746
Average pavement type shall be used unless
a State highway agency substantiates the use
of a different type with the approval of FHWA
Flow Control Segment
Control -Speed Percent Pvmt On
Device Constraint Vehicles Type Struct?
Affected
mph %
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
1 5 St
INPUT: TRAFFIC FOR LAeq1h Volumes 10746
Dudek 5 September 2018
JVL TNM 2.5
INPUT: TRAFFIC FOR LAeq1 h Volumes
PROJECT/CONTRACT: 10746
RUN: Laguna Drive -Existing with Project
Roadway Points
.Name Name No. Segment
Autos MTrucks HTrucks 1Buses Motorcycles
V s V s V s V s V s
veh/hr mph veh/hr mph veh/hr mph veh/hr mph veh/hr mph
Laguna EB West End 1 152 30 5 30 0 0 3 30 3 30
point2 2 152 30 5 30 0 0 3 30 3 30
point3 3 152 30 5 30 0 0 3 30 3 30
point4 4 152 30 5 30 0 0 3 30 3 30
point5 5 152 30 5 30 0 0 3 30 3 30
East End 6
Laguna WB East End 7 152 30 5 30 0 0 3 30 3 30
point8 8 152 30 5 30 0 0 3 30 3 30
point9 9 152 30 5 30 0 0 3 30 3 30
point10 10 152 30 5 30 0 0 3 30 3 30
point11 11 152 30 5 30 0 0 3 30 3 30
West End 12
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\existing_w_proj 1
INPUT: RECEIVERS
Dudek
JVL
INPUT: RECEIVERS
PROJECT/CONTRACT:
;RUN:
·Receiver
Name
ST1
ST2
ST3
R1
R2
10746
Laguna Drive -Existing with Project
No. ·#DUs ;Coordinates (ground)
X y
ft ft
1 1 180.0 90.0
2 1 100.0 -5.0·
3 1 375.0 200.0
4 1 235.0 100.0
5 1 110.0 120.0
C:\TNM2S\PROGRAM\107 46 LAGUNA DRIVE\existing_w _proj
z
ft
0.00
0.00
0.00
0.00
0.00
S September 2018
TNM 2.5
10746
Height [Input Sound Levels and Criteria
above Existing Impact Criteria NR
Ground LAeq1h LAeq1h Sub'I Goal
ft dBA dBA dB dB
4.92 0.00 66 10.0
4.92 0.00 66 10.0'
4.92 0.00 66 10.0,
4.92 o.oo; 66 10.0
4.92 o.oo, 66 10.01
1
8.0
8.0
8.0
8.0
8.0•
Active
in
Cale.
y
y
y
y
y
RESULTS: SOUND LEVELS
Dudek
JVL
RESULTS: SOUND LEVELS
PROJECT/CONTRACT:
RUN:
BARRIER DESIGN:
ATMOSPHERICS:
Receiver
Name
ST1
ST2
ST3
R1
R2
Dwelling Units
All Selected
All Impacted
All that meet NR Goal
No.
1
2
3
4
5
10746
Laguna Drive -Year 2035 no Project
INPUT HEIGHTS
68 deg F, 50% RH
#DUs
1
1
1
1
1
Existing
LAeq1h
dBA
0.0
0.0
0.0
0.0
0.0
No Barrier
LAeq1h
Calculated
dBA
59.4
576
52.4
58.3
56.5
#DUs Noise Reduction
Min Avg
dB dB
5 00 0.0
0 0.0 0.0
0 0.0 0.0
Crit'n
dBA
Max
dB
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\2035_no_project
66
66
66
66
66
00
0.0
0.0
10746
5 September 2018
TNM 2.5
Calculated with TNM 2.5
Average pavement type shall be used unless
a State highway agency substantiates the use
of a different type with approval of FHWA.
Increase over existing Type
Impact
With Barrier
Calculated
LAeq1h
Noise Reduction
Calculated Goal Calculated Crit'n
Sub'I Inc
dB dB dBA dB dB
59.4 10 --59.4 0.0 8
57.6 10 --57.6 0.0 8
52.4 10 -52.4 0.0 8
58.3 10 -58.3 0.0 8
56.5 10 -56.5 0.0 8
1
· Calculated
minus
Goal
dB
-8.0
-8.0
-8.0
-8.0
-8.0
5 Septembe
INPUT: ROADWAYS
Dudek
JVL
INPUT: ROADWAYS
PROJECT/CONTRACT: 10746
5 September 2018
TNM 2.5
RUN: Laguna Drive -Year 2035 no Project
Roadway
Name
Laguna EB
Laguna WB
Points
Width Name
ft
12.0 West End
point2
. point3
point4
point5
East End
12.0 East End
points
point9
point10
point11
West End
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\2035_no_project
No. Coordinates (pavement)
X y z
ft ft ft
1 0.0 44.0
2 100.0 44.0
3 200.0 44.0
4 300.0 44.0
5 400.0 44.0
6 500 0, 44.0
7 500.0 56.0
8 400.0 56.0
S1 300.0 56.0
1 200.0 56.0
11 100.0 56.0 ,·, 0.0 56.0
10746
Average pavement type shall be used unless
a State highway agency substantiates the use
of a different type with the approval of FHWA
· Flow Control Segment
Control ,Speed Percent Pvmt :On
Device Constraint •Vehicles Type Struct?
Affected
mph %
0.00 Average
0.00 Average
0.00 Average
0.00 Average
0.00 Average
0.00
0.00 . Average
0.00 Average
0.00 Average
0.00 Average
0.00 Average
0.00
1 5 SE
INPUT: TRAFFIC FOR LAeq1 h Volumes 10746
Dudek 5 September 2018
JVL TNM 2.5
, INPUT: TRAFFIC FOR LAeq1 h Volumes
: PROJECT/CONTRACT: 10746
RUN: Laguna Drive -Year 2035 no Project
Roadway Points
:Name Name No. :Segment
Autos MTrucks HTrucks !Buses Motorcycles
V s V s rv IS :v s V s I
veh/hr mph veh/hr mph -lveh/hr rmph _ jveh/hr mph veh/hr mph
Laguna EB West End 1 158 30 5 30 0 oi 3 30 3 301
point2 2 158 30 5 30 0 oi 3 30 3 301
I I point3 3 158 30 5 30 0 0 3 30 3 30,
' point4 4 158 30 5 30 0 0 3 30 3 30!
' points 5 158 30 5 30 0 0 3 30 3 301
East End 6 I Laguna WB East End 7 158 30 5 30 01 0 3 30 3 301
.. 1581 --
pointB 8 30 5 30 0 0 3 30 3 30:
I j
point9 9 158: 30 5 30 0 0 3 30 3 30!
point10 10 158] 30 5 30 0 0 3 30 3 30:
--T
3oi point11 11 158, 30 5 30 0 0 3 30 3
West End 12
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\2035_no_project 1
INPUT: RECEIVERS
Dudek
JVL
INPUT: RECEIVERS
PROJECT/CONTRACT:
RUN:
,Receiver
Name
ST1
ST2
ST3
R1
R2
10746
Laguna Drive -Year 2035 no Project
No. #DUs Coordinates (ground)
X y
ft ft
1 1 180.0 90.0
2 1 100.0 -5.0
3 1 375.0 200.0
4 1 235.0 100.0
5 1 110.0 120.0
C:\TNM25\PROGRAM\ 107 46 LAGUNA DRIVE\2035_no_project
z
ft
0.00
0.00
0.00
0.00
0.00
10746
5 September 2018
TNM 2.5
Height
above
Ground
ft
4.92
4.92
4.92
4.92
4.92
Input Sound Levels and Criteria
Existing Impact Criteria 1NR
LAeq1h LAeq1h Sub'I Goal
dBA dBA dB dB
0.00 66 10.0
0.00 66 10.0
0.00 66 10.0
0.00 66 10.0
0.00 66 10.0
1
8.0
8.0
8.0
8.0
8.0
.Active
in
Cale.
y
y
y
y
y
RESULTS: SOUND LEVELS
Dudek
JVL
RESULTS: SOUND LEVELS
PROJECT/CONTRACT:
RUN:
BARRIER DESIGN:
ATMOSPHERICS:
Receiver
Name
ST1
ST2
ST3
R1
R2
Dwelling Units
All Selected
All Impacted
All that meet NR Goal
10746
Laguna Drive -Year 2035 w/Project
INPUT HEIGHTS
68 deg F, 50% RH
No. #DUs • Existing No Barrier
1 1
2 1
3 ,
4 1
5 1
#DUs
5
0
0
LAeq1 h LAeq1 h
Calculated Crit'n
dBA dBA dBA
0.0 59.5
0.0 57.6
0.0 52.4
0.0 58.4
0.0 56.5
Noise Reduction
Min Avg Max
dB dB dB
0.0 0.0
0.0 0.0
0.0 0.0
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\2035_w_Project
66
66
66
66
66
0.0
0.0
0.0
10746
5 September 2018
TNM 2.5
Calculated with TNM 2.5
Average pavement type shall be used unless
a State highway agency substantiates the use
of a different type with approval of FHWA.
Increase over existing Type
Calculated Crit'n Impact
Sub'I Inc
dB dB
59.5 10 ----
57 6 10 --
52.4 10 -
58.4 10 ---
56.5 10 --
1
With Barrier
Calculated Noise Reduction
LAeq1 h Calculated Goal
dBA dB dB
59.5 0.0
57.6 0.0
52.4 0.0
58.4 0.0
56.5 0.0
Calculated
·minus
Goal
dB
8 -8.0
8 -8.0
8 -8.0
8 -8.0
8 -8.0
5 Septembe
INPUT: ROADWAYS
Dudek
JVL
INPUT: ROADWAYS
PROJECT/CONTRACT: 10746
5 September 2018
TNM 2.5
RUN: Laguna Drive -Year 2035 w/Project
Roadway
Name
Laguna EB
Laguna WB
Points
Width Name
ft
12.0 West End
point2
point3
point4
point5
East End
12.0 East End
point8
point9
point10
point11
West End
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\2035_w_Project
No. Coordinates (pavement)
X Y Z
ft ft ft
1 0.0 44.0
2 100.0 44.0
3 200.0 44.0
4 300.0 44.0
5 400.0 44.0
6 500.0 44.0
7 500.0 56.0
8 400.0 56.0
9 300.0 56.0
10 200.0 56.0
11 100.0 56.0
12 0.0 56.0
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
10746
Average pavement type shall be used unless
a State highway agency substantiates the use
of a different type with the approval of FHWA
Flow Control Segment
Control Speed Percent Pvmt On
Device Constraint Vehicles Type Struct?
Affected
mph %
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
1 5 SE
INPUT: TRAFFIC FOR LAeq1 h Volumes 10746
Dudek 5 September 2018
JVL TNM 2.5
INPUT: TRAFFIC FOR LAeq1 h Volumes
PROJECT/CONTRACT: 10746
RUN: Laguna Drive -Year 2035 w/Project
Roadway Points
Name Name No. Segment
Autos MTrucks HTrucks Buses Motorcycles
V s V s V s V s V s
veh/hr mph veh/hr mph veh/hr mph veh/hr mph veh/hr mph
Laguna EB West End 1 162 30 5 30 0 0 3 30 3 30
point2 2 162 30 5 30 0 0 3 30 3 30
point3 3 162 30 5 30 0 0 3 30 3 30
point4 4 162 30 5 30 0 0 3 30 3' 30
points 5 162 30 5 30 0 0 3 30 3 30
East End 6
Laguna WB East End 7 162 30 5 30 0 0 3 30 3 30
point8 8 162 30 5 30 0 0 3 30 3 30
point9 9 162 30 5 30 0 0 3 30 3 30
point10 10 162 30 5 30 0 0 3 30 3 30
point11 11 162 30 5 30 0 0 3 30 3 30
West End 12
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\2035_w_Project 1
INPUT: RECEIVERS
Dudek
JVL
!INPUT: RECEIVERS
'PROJECT/CONTRACT:
:RUN:
Receiver
Name
ST1
ST2
ST3
R1
R2
10746
Laguna Drive -Year 2035 w/Project
No. i#DUs Coordinates (ground)
X y
ft tt
1'
2!
180.0 90.0
100.0 -5.0
I
3j 375.01 200.0
4! 235.0 100.0
5i 110.0· 120.0
C:\TNM25\PROGRAM\10746 LAGUNA DRIVE\2035_w_Project
z
ft
0.00
0.00
0.00
0.00
0.00
10746
5 September 2018
TNM 2.5
Height
above
Ground
ft
4.92
4.92
4.92
4.92
4.92
:Input Sound Levels and Criteria
Existing Impact Criteria fNR
LAeq1h LAeq1h Sub'I Goal
dBA dBA dB dB
0.00 66 10.0
0.00 66 1 10.0
0.00 66 10.0
0.00 66 10.0
0.00 66 10.0
1
8.0 -
8.0
8.0
8.0:
8.0i
Active
in
Cale.
y
y
y
y
y