HomeMy WebLinkAboutCT 15-04; The Grand Madison; NOISE STUDY; 2015-12-01THE GRAND MADISON
MIXED USE DEVELOPMENT PROJECT
NOISE STUDY
Prepared for:
Patrick Smith, LLC
Prepared by:
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BIRDSEYE
PLANNING GROUP
December 2015
The Grand Madison Mixed Use Development Project
Noise Study
Table of Contents
Page
Project Description ..................................................................................................................................... !
Setting .......................................................................................................................................................... 1
Overview of Sound Measurement ................................................................................................. 1
Sensitive Receptors .......................................................................................................................... 3
Project Site Setting ............................................................................................................................ 3
Regulatory Setting ............................................................................................................................ 5
Impact Analysis .......................................................................................................................................... 7
Methodology and Significance Thresholds .................................................................................. 7
Temporary Construction Noise ...................................................................................................... 8
Construction Noise Reduction Measures ..................................................................................... 9
Residual Impacts ............................................................................................................................ 10
Temporary Construction-Related Vibration .............................................................................. 10
Long-Term Operational Noise Exposure .................................................................................... ll
References ................................................................................................................................................. 14
List of Figures
Figure 1 -Project Location ........................................................................................................................ 2
Figure 2-Noise Monitoring Locations ................................................................................................... 6
List of Tables
Table 1 -Noise Monitoring Results ......................................................................................................... 5
Table 2-Typical Construction Equipment Noise Levels .................................................................... 8
Table 3-Typical Maximum Construction Noise Levels at Various Distances from
Project Construction .................................................................................................................. 9
Table 4-Vibration Source Levels for Construction Equipment.. ..................................................... ll
Appendices
Appendix A Noise Monitoring Data
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The Grand Madison Mixed Use Development Project
Noise Study
THE GRAND MADISON
MIXED USE DEVELOPMENT PROJECT
CARLSBAD, CALIFORNIA
NOISE STUDY
This report is an analysis of the potential noise impacts associated with The Grand Madison, a
mixed use development proposed for construction in the City of Carlsbad. The report has been
prepared by Birdseye Planning Group, LLC, under contract to the applicant to support the
environmental review process and address corrections identified in PC 15-57 Review #1 dated
November 25,2015, received from the City of Carlsbad. This study analyzes the potential for
temporary impacts associated with construction activity and long-term impacts associated with
operation of the proposed project.
PROJECT DESCRIPTION
The Grand Madison is a retail/ office/residential mixed use project proposed for development
in Carlsbad, CA, on Assessor Parcel Number 203-303-21. The project entails construction of a
new 4-story mixed use building with parking on an approximately 11,000 square feet lot at 725
Grand Avenue (southeast corner of Grand Avenue and Madison Street) in downtown
Carlsbad, California (see Figure 1). The building would contain retail on the ground floor, office
space on floors 2 and 3 and four residential units on the fourth floor. A total of 20 parking
spaces would be provided on-site -16 covered spaces for retail and commercial tenants and
four spaces dedicated to the residential units. The project would require the demolition of an
existing commercial building (Packard Dental) prior to construction. Decisions to approve
entitlements associated with the proposed project are discretionary; thus, compliance with the
California Environmental Quality Act (CEQA) is required. This noise impact study will be
used by the City of Carlsbad to support the discretionary review process.
SETTING
Overview of Sound Measurement
Noise level (or volume) is generally measured in decibels (dB) using the A-weighted sound
pressure level (dBA). The A-weighting scale is an adjustment to the actual sound pressure levels
to be consistent with that of human hearing response, which is most sensitive to frequencies
around 4,000 Hertz (about the highest note on a piano) and less sensitive to low frequencies
(below 100 Hertz).
Sound pressure level is measured on a logarithmic scale with the 0 dB level based on the lowest
detectable sound pressure level that people can perceive (an audible sound that is not zero
sound pressure level). Based on the logarithmic scale, a doubling of sound energy is equivalent
to an increase of 3 dBA, and a sound that is 10 dBA less than the ambient sound level has no
effect on ambient noise. Because of the nature of the human ear, a sound must be about 10 dBA
greater than the reference sound to be judged as twice as loud. In general, a 3 dBA change in
community noise levels is noticeable, while 1-2 dB changes generally are not perceived. Quiet
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suburban areas typically have noise levels in the range of 40-50 dBA, while arterial streets are in
the 50-60+ dBA range. Normal conversational levels are in the 60-65 dBA range, and ambient
noise levels greater than 65 dBA can interrupt conversations. Noise levels typically attenuate (or
drop off) at a rate of 6 dBA per doubling of distance from point sources (i.e., industrial
machinery). Noise from lightly traveled roads typically attenuates at a rate of about 4.5 dBA per
doubling of distance. Noise from heavily traveled roads typically attenuates at about 3 dBA per
doubling of distance. Noise levels may also be reduced by intervening structures; generally, a
single row of buildings between the receptor and the noise source reduces the noise level by
about 5 dBA, while a solid wall or berm reduces noise levels by 5 to 10 dBA. The manner in
which older homes in California were constructed (approximately 30 years old or older)
generally provides a reduction of exterior-to-interior noise levels of about 20 to 25 dBA with
closed windows. The exterior-to-interior reduction of newer residential units and office
buildings is generally 30 dBA or more (HMMH, 2006).
In addition to the actual instantaneous measurement of sound levels, the duration of sound is
important since sounds that occur over a long period of time are more likely to be an annoyance
or cause direct physical damage or environmental stress. One of the most frequently used noise
metrics that considers both duration and sound power level is the equivalent noise level (Leq).
The Leq is defined as the single steady A-weighted level that is equivalent to the same amount
of energy as that contained in the actual fluctuating levels over a period of time (essentially, the
average noise level). Typically, Leq is summed over a one-hour period. Lmax is the highest
RMS (root mean squared) sound pressure level within the measuring period, and Lmin is the
lowest RMS sound pressure level within the measuring period.
The time period in which noise occurs is also important since noise that occurs at night tends to
be more disturbing than that which occurs during the day. Community noise is usually
measured using Day-Night Average Level (Ldn), which is the 24-hour average noise level with
a 10-dBA penalty for noise occurring during nighttime (10 p.m. to 7 a.m.) hours, or Community
Noise Equivalent Level (CNEL), which is the 24-hour average noise level with a 5 dBA penalty
for noise occurring from 7 p.m. to 10 p.m. and a 10 dBA penalty for noise occurring from 10
p.m. to 7 a.m. Noise levels described by Ldn and CNEL usually do not differ by more than 1
dB.
Sensitive Receptors
Noise exposure goals for various types of land uses reflect the varying noise sensitivities
associated with each of these uses. The City of Carlsbad General Plan Noise Element Update
(approved September, 2015) includes a variety of land use and development types that are noise
sensitive including residences, schools, churches, hospitals and convalescent care facilities.
Nearby sensitive receptors are multifamily residences located approximately 1/2 block north of
the project site and a day care center located 1/2 block to the east. Commercial uses are the
dominant land use in the area.
Project Site Setting
The most common and primary sources of noise in the project site vicinity are motor vehicles
(e.g., automobiles, buses, trucks, and motorcycles) along Grand Avenue, Madison Street and
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Jefferson Street. Motor vehicle noise is of concern because it is characterized by a high number
of individual events, which often create a sustained noise level, and because of its proximity to
noise sensitive uses. Interstate 5 is located approximately 1,700 feet to the east. It is not audible
as background noise and does not contribute to overall noise levels at the project site. Traffic on
Grand A venue and Madison Street is the primary noise source in the area though noise from
Jefferson Street contributes to background noise levels. Other sources include general public
activity occurring at neighboring businesses.
The Atichson, Topeka and Santa Fe Railroad (AT&SF) rail corridor is located three blocks
(approximately 1,000 feet) to the west. This segment of the Los Angeles-San Diego-San Luis
Obispo (LOSSAN) corridor is the second busiest passenger and freight rail corridor in the
United States. According to the rail timetables, up to 50 trains (40 passenger and 10 freight
trains) use the corridor segment daily between Oceanside and the Santa Fe Depot in downtown
San Diego. Existing rail operations are audible as background noise at the project site,
particularly the warning horns/bells that are used when trains are approaching the Carlsbad
Village Drive crossing and station. Train operations do affect ambient noise conditions within
the area. McClellan-Palomar Airport is located approximately 4.5 miles southeast of the site.
The site is outside the airport influence area; however, aircraft operations are audible as a
distant source and contribute negligibly to existing noise levels. No other noise sources are near
the project site.
The City of Carlsbad General Plan Update Noise Element (2015) provides noise contours
associated with transportation corridors (i.e., roadways, railroad and airport). This provides a
graphic illustration of sound levels near road corridors, but typically does not include effects of
landforms and adjacent structures. Generally, barriers between a source and receiver absorb or
reflect noise resulting in a quieter environment. Where barriers or landforms do not interrupt
the noise transmission path from source to receiver, the contours prove to be reasonable
estimates of typical noise levels from roadway traffic. In areas where barriers or landforms
interrupt the sound transmission, the noise contours overestimate the extent to which a source
intrudes into neighboring areas. The noise contour distances describe worst-case conditions
because they do not account for any obstructions to the noise path, such as walls, berms, or
buildings. As noted, railroad noise is audible when train pass-by events occur. The contours
provided in the General Plan Update Noise Element provide a reasonable prediction of rail
noise levels at the site. Noise contours show the project site is outside the 60-65 dBA CNEL
contour interval defined for the railroad track and on the outer boundary of the 60-65 dBA
CNEL contour line for 1-5.
To gather data on the general noise environment at the project site, two weekday morning 15-
minute noise measurements were acquired in proximity to the project site on December 2, 2015,
using an ANSI Type II integrating sound level meter. Site 1 is located in the northeast corner of
Grand Avenue and Madison Street adjacent to and south of the Madison Garden Apartments;
Site 2 is located adjacent to the Family Day care at the northwest corner of Grand A venue and
Jefferson Street. Both locations are sensitive properties; Site 1 also approximates existing noise
conditions at the project site. The predominant noise source in the area during monitoring at
Site 1 was traffic on Grand A venue. The predominant noise source at Site 2 was traffic on
Jefferson Street. The temperature during monitoring was 63 degrees Fahrenheit with wind from
the west at approximately 5 mph.
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During monitoring, a total of 142light trucks and six medium (six tires/two axles) passed Site 1.
A total of 201 cars/light trucks and three medium delivery truck passed the monitoring location
along Jefferson Street east of the site. One Am-Track pass by occurred during monitoring at Site
2. Table 1 identifies the noise measurement locations and measured noise levels. Monitoring
locations are shown in Figure 2. As shown, the highest Leq was 63.1 dBA during the morning
monitoring period. Monitoring data is provided as Appendix A.
Table 1
Noise Monitoring Results
Measurement Location Primary Noise Sample Time Leq (dBA) Source
Northwest corner of the Grand Avenue and Madison
Street approximately 50 feet north of Grand Avenue Traffic Weekday morning 57.3
centerline.
Northwest corner of Grand Avenue and Jefferson
Street approximately 30 feet west of Jefferson Street Traffic Weekday morning 63.1
centerline.
Source: Field visit using ANSI Type //Integrating sound level meter.
Regulatory Setting
In 1976, the California Department of Health, State Office of Noise Control published a
recommended noise/land use compatibility matrix which many jurisdictions have adopted as a
standard in their general plan noise elements. This matrix indicates that residential land uses
and other noise sensitive receptors preferentially should be located in areas where outdoor
ambient noise levels do not exceed 65 to 70 dBA (CNEL or Ldn).
Municipal Code and Noise Guideline Manual
The City of Carlsbad has established noise guidelines in the Noise Element of the City's General
Plan (City of Carlsbad, 20155) that are applicable for transportation noise sources. The noise
guidelines identify compatible exterior noise levels for various land use types. Residential land
uses are considered normally acceptable up to 60 dB CNEL. Commercial land uses are
considered normally acceptable up to 65 dB CNEL and conditionally acceptable up to 75 dB.
The City of Carlsbad Municipal Code regulates construction noise by limiting the hours of
operation (City of Carlsbad 2003). Construction activities are allowed to occur Monday through
Friday between the hours of 7 a.m. to sunset; and on Saturdays from 8 a.m. to sunset, excluding
legal holidays. The City does not have quantitative noise level limits (i.e., based on sound
levels) for general nuisance noise such as that associated with stationary equipment located on
private property.
For the purpose of this study, the residential standard of 60 dB CNEL is used to evaluate
potential exterior noise impacts associated with the proposed project. An interior noise standard
of 45 dBA CNEL is used herein as referenced in the City of Carlsbad Noise Guidelines Manual
(1995). An interior standard of 55 dBA CNEL applies to retail/ commercial uses.
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Noise Study
Vibration Standards
Vibration is a unique form of noise as the energy is transmitted through buildings, structures
and the ground whereas audible noise energy is transmitted through the air. Thus, vibration is
generally felt rather than heard. The ground motion caused by vibration is measured as particle
velocity in inches per second and is referenced as vibration decibels (V dB). The vibration
velocity level threshold of perception for humans is approximately 65 V dB. A vibration velocity
of 75 V dB is the approximate dividing line between barely perceptible and distinctly perceptible
levels.
City policies do not address construction-related vibration; thus, for the purpose of evaluating
project-related vibration impacts, thresholds established in the Federal Transit Administration's
(FTA) Transit Noise and Vibration Impact Assessment (May 2006) are used. A threshold of 65 VdB
is used for buildings where low ambient vibration is essential for interior operations. These
buildings include hospitals and recording studios. A threshold of 72 V dB is used for residences
and buildings where people normally sleep (i.e., hotels and rest homes). A threshold of 75 VdB
is used for institutional land uses where activities occur primarily during the daytime (i.e.,
churches and schools). The threshold used for the proposed project is 72 VdB as multifamily
residences are the only sensitive receptors in proximity to the site.
Construction activities such as blasting, pile driving, demolition, excavation or drilling have the
potential to generate ground vibrations near structures. With respect to ground-borne vibration
impacts on structures, the FTA states that ground-borne vibration levels in excess of 100 V dB
would damage fragile buildings and levels in excess of 95 V dB would damage extremely fragile
historic buildings. No historic buildings are known to occur near the site; thus, 100 VdB is used
to quantify potential vibration impacts to neighboring structures. Construction activities
referenced above that would generate significant vibration levels are not proposed. However, to
provide information for use in completing the CEQA evaluation, construction-related vibration
impacts are evaluated using the above referenced criteria.
IMPACT ANALYSIS
Methodology and Significance Thresholds
Construction noise estimates are based upon noise levels reported by the Federal Transit
Administration, Office of Planning and Environment, and the distance to nearby sensitive
receptors. Reference noise levels from that document were used to estimate noise levels at
nearby sensitive receptors based on a standard noise attenuation rate of 6 dB per doubling of
distance (line-of-sight method of sound attenuation).
Because the proposed project would replace an existing use, noise levels associated with
existing and future traffic were based on the difference in trip volumes between the existing and
proposed use. A doubling of traffic volumes would be required to cause a noticeable increase (3
dBA) in traffic noise. Thus, the two numbers were calculated to determine whether the project
would generate enough traffic to increase noise levels by 3 dBA or more. This study also
estimates potential noise levels at the project site related to operation of the AT &SF rail line
which is located approximately 1,000 feet west of the site. A software program based on
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methodologies approved by the Federal Rail Administration was used to perform noise
calculation associated with rail operations. Specific assumptions used in the analysis are
described below.
As noted, a noise increase greater than 3 dBA is readily perceptible to the average human ear;
and thus, is the level considered a substantial noise increase related to traffic operations.
However, within the City of Carlsbad, noise impacts are also considered significant if noise
levels would exceed 60 dBA CNEL. For the purpose of this evaluation, the peak hour Leq is
used for traffic noise as it provides a more conservative estimate of potential noise levels. The
CNEL is used within the rail noise discussion. Existing noise levels at monitoring Site 2 exceed
60 dBA as referenced above; thus, the determination of impact is based on whether existing
noise levels would increase with project implementation.
All mechanical equipment associated with the project would be located in enclosed rooms on
the roof top. Mechanical noise is not expected to be audible at adjacent receivers.
Temporary Construction Noise
The main sources of noise during construction activities would include heavy machinery used
during demolition, grading, and clearing the site, as well as equipment used during building
construction and paving. Table 2 demonstrates the typical noise levels associated with heavy
construction equipment. As shown, average noise levels associated with the use of heavy
equipment at construction sites can range from about 81 to 95 dBA at 25 feet from the source,
depending upon the types of equipment in operation at any given time and phase of
construction (Hanson, Towers, and Meister, May 2006).
T IYPICa
Equipment Onsite
Air Compressor
Backhoe
Bobcat Tractor
Concrete Mixer
Bulldozer
Jack Hammer
Pavement Roller
Street Sweeper
Man Lift
Dump Truck
IC onstruc 10n :qulpmen
Table 2
f E t N . L OISe eves
Typical Level Typical Level (dBA) Typical Level (dBA)
(dBA) 25 Feet 50 Feet from the 100 Feet from the
from the Source Source Source
84 78 64
84 78 64
84 78 64
85 79 73
88 82 76
95 89 83
86 80 74
88 82 76
81 75 69
82 76 70
Source: Noise levels based on FHWA Roadway Construction Noise Model (2006) Users Guide Table 1.
Noise levels based on actual maximum measured noise levels at 50 feet (Lmax).
Noise levels assume a noise attenuation rate of 6 dBA per doubling of distance.
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Noise-sensitive uses near the project site consist of multifamily residences located 1/2 block (200
feet) north of the site and a day care center located 1/2 block to the east (200 feet to the western
property line). Construction noise will be audible at both properties. Table 3 shows typical
maximum construction noise levels at various distances from construction activity, based on a
standard noise attenuation rate of 6 dBA per doubling of distance. The noise level used to
estimate the maximum noise level that could occur is based on use of a bulldozer as it is likely
to be the noisiest type of equipment used over a sustained period of time adjacent to
neighboring residences during demolition and site preparation activities. Actual noise levels
will fluctuate throughout the day and may periodically exceed 88 dBA at the property line
depending on the type and location of equipment used and whether multiple pieces of
equipment are operating simultaneously in the same area.
Table 3
Typical Maximum Construction Noise Levels
at Various Distances from Project
Construction
Distance from Maximum Noise Level at
Construction Receptor
(dBA)
25 feet 88
50 feet 82
100 feet 76
250 feet 70
500 feet 64
1,000 feet 58
As noted, the sensitive receptors nearest to the proposed construction site are multifamily
residences located approximately 1/2 block north of the site and a daycare located 1/2 block to the
east. At this distance, noise levels from construction could range between 70 and 76 dBA.
However, temporary construction noise is not restricted if it occurs between the hours specific
in the noise ordinance referenced herein. While not required, temporary construction noise can
be reduced by implementing one or more of the following measures.
Construction Noise Reduction Measures
Temporary construction noise levels could be reduced through implementation of the following
measures:
N-1
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Construction Equipment. Electrical power shall be used to run air
compressors and similar power tools. Internal combustion engines
should be equipped with a muffler of a type recommended by the
manufacturer and in good repair. All diesel equipment should be
operated with closed engine doors and should be equipped with
factory-recommended mufflers. Construction equipment that
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The Grand Madison Mixed Use Development Project
Noise Study
N-2
N-3
Residual Impacts
continues to generate substantial noise at the project boundaries
should be shielded with temporary noise barriers, such as barriers
that meet a sound transmission class (STC) rating of 25, sound
absorptive panels, or sound blankets on individual pieces of
construction equipment. Stationary noise-generating equipment,
such as generators and compressors, should be located as far as
practically possible from the nearest residential property lines.
Limit Operations Adjacent to Receivers. Limit the number of
large pieces of equipment (i.e., bulldozers or concrete mixers)
operating adjacent to receivers to one at any given time.
Neighbor Notification. Provide notification to residential
occupants nearest to the project site at least 24 hours prior to
initiation of construction activities that could result in substantial
noise levels at outdoor or indoor living areas. This notification
should include the anticipated hours and duration of construction
and a description of noise reduction measures being implemented
at the project site. The notification should include a telephone
number for local residents to call to submit complaints associated
with construction noise. The notification should be posted Grand
A venue and Madison Street and should be easily viewed from
adjacent public areas.
Project construction would represent a temporary source of noise at the project site. Measures
N-1 through N-3 would reduce construction noise levels. No residual impacts associated with
construction noise are anticipated.
Temporary Construction-Related Vibration
Activities associated with mixed use projects do not generate vibration. Thus, this discussion
will focus on temporary vibration caused by construction. Based on the information presented
in Table 4, vibration levels could reach approximately 75 VdB at the residences nearest the site
during construction assuming a bulldozer is the heaviest piece of equipment used during
demolition. The nearest residences are located approximately 200 feet from the project's
northern boundary.
As discussed below, 100 V dB is the threshold where minor damage can occur in fragile
buildings. Vibration levels are projected to be under this threshold; thus, structural damage is
not expected to occur as a result of construction activities associated with the proposed project.
Vibration levels at residential units located north of the project site are unlikely to exceed the
ground borne velocity threshold level of 72 V dB for residences and/ or buildings where people
sleep as discussed above. Maximum vibration levels would be approximately 68 V dB.
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However, as long as construction occurs within the prescribed hours, any temporary impact
would be considered adverse, but less than significant.
Table 4
Vibration Source Levels for Construction Equipment
Equipment Approximate VdB
25 Feet 50 Feet 60 Feet 75 Feet 100 Feet
Large Bulldozer 87 81 79 77 75
Loaded Trucks 86 80 78 76 74
Jackhammer 79 73 71 69 67
Small Bulldozer 58 52 50 48 46
Source: Federal Railroad Administration, 1998
Long-Term Operational Noise Exposure
Exterior Traffic Noise. Traffic is the primary noise source that would be generated by
the proposed project. However, the project is replacing an existing dental office building located
on the site; thus, whether a traffic-related noise impact would occur is based on whether the
project would cause an increase in peak hour traffic volumes relative to existing conditions. The
peak hour is defined as the one-hour period between 7:00 am and 9:00am and 4:00pm and 6:00
pm when the highest volumes occur.
Traffic volumes for the project were based on evening peak hour trip generation rates published
by the Institute of Transportation Engineers (ITE) publication Trip Generation, 8th Edition retail,
general office and apartments. The existing dental office is estimated to generate 504 average
daily trips and 50 peak hour trips. Peak hour trips are assumed to be 10% of the ADT. For the
purpose of this analysis, the retail use (4,600 square feet) would generate 6.82 peak hour trips
per 1,000 square feet (31 trips). The commercial office use (10,060 square feet) would generate
1.49 trips per 1,000 square feet (15 trips). The residential uses would generate 0.62 peak hour
trips per unit or 3 trips. The proposed project would generate 49 peak hour trips which is
approximately the same as the existing use. Thus, long term traffic operation associated with
the project would have no adverse effect on noise levels at sensitive properties within proximity
to the site. Project impacts with respect to exterior traffic noise would be less than significant.
Interior Traffic Noise. The proposed project would be designed to meet or exceed
California Energy Code Title 24 standards which specify construction methods and materials
that result in energy efficient structures and up to a 30 dBA reduction in exterior noise levels
(assuming windows are closed). When windows are open the insertion loss drops to about 10
dBA. Assuming windows are closed, interior noise levels associated with traffic operations
would be reduced from 57.3 (baseline) to 27.3 dBA which would be below the 45 dBA standard.
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Exterior Railroad Noise. The AT &SF corridor is located approximately 1,000 feet to the
west of the site and is used by Amtrak and the North County Transit District Coaster to provide
passenger rail service. It is also used by freight trains during the late evening and nighttime
hours. Based on the time tables, approximately 50 trains operate daily within this segment.
Train volumes vary throughout the day but are generally higher during the morning and
evening commute hours and reflect the dominant use of this corridor by commuter rail and
passenger trains.
Train noise is generated by a combination of factors including the number of locomotives, rail
cars, speed, volume distribution over the day and nighttime hours and whether train horns are
used. The existing rail noise levels at the project site were calculated using a proprietary
software program based on Federal Rail Administration methodology. Because Coaster trains
stop at the Carlsbad station (Amtrak and freight trains do not), which is located approximately
1 block north of the Grand Avenue/State Street intersection, it was assumed the average speed
through the area is 35 miles per hour. It was assumed that each passenger train has one
locomotive and 10 rail cars. For freight trains it was assumed they have two locomotives and 50
cars. All trains are assumed to use the warning horn when approaching/ crossing Carlsbad
Village Drive. Of the 50 train pass by events each day, five freight operations were assumed to
occur during the nighttime (10:00 p.m. to 7:00a.m.) hours. Based on these assumptions, the
exterior CNEL at the project site (located 1,000 feet east of the rail corridor) is approximately 60
dBA when both passenger and freight rail operations are combined. This does not consider the
intervening buildings that may reduce noise levels by approximately 5 dBA for first
floor/ single story receivers. Thus, existing noise levels reach but do not exceed the 60 dB CNEL
recommended in the General Plan Update Noise Element for residential areas within the City of
Carlsbad.
Interior Railroad Noise. While the proposed project will have no impact on rail noise,
the CNEL at the project site is estimated to be 60 dBA. Thus, project design features would be
necessary to reduce interior noise levels to at least 45 dBA CNEL as specified in the City of
Carlsbad Noise Guidelines Manual. As noted above, the proposed project would be designed to
meet or exceed California Energy Code Title 24 standards which specify construction methods
and materials that result in energy efficient structures and up to a 30 dBA reduction in exterior
noise levels (assuming windows are closed). Assuming windows are closed, the CNEL
associated with rail noise would be reduced from 60 dBA CNEL to 30 dBA CNEL which would
be consistent with the local standards. No measures in addition to compliance with Title 24
design requirements would be necessary to reduce rail noise.
Rail Vibration. As noted, the proposed project would be constructed approximately
1,000 feet east of the rail corridor. Thus, a screening evaluation of potential vibration impacts
was performed to determine whether the project would be exposed to vibration levels that
could be perceived by building residents. Because the project has a residential element, it
would be considered a Category 2 land use for the purposes of vibration assessment as defined
in the Federal Transit Administration, Transit Noise and Vibration Impact Assessment (2006). This
category covers all residential land uses and any buildings where people sleep, such as hotels
and hospitals.
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The impact criteria for a Category 2land use is 75 V dB along corridors where train vibration
events occur occasionally (i.e., 30 to 70 events daily). As noted, a vibration velocity of 75 VdB is
the approximate dividing line between barely perceptible and distinctly perceptible levels.
A screening level evaluation was performed to determine the likelihood of vibrations from the
LOSSAN corridor affecting the proposed project. The screening distance for conventional
commuter railroads was used to account for both passenger and freight trains. The distance
between a conventional commuter railroad and Category 2land use where the potential for a
vibration impact to occur is 200 feet as defined in Table 9.2 within the PTA noise and vibration
impact assessment methodology. The screening distances include a 5-decibel safety factor. The
proposed project site is located beyond the 200 foot screening distance; thus, vibration-related
impacts are not anticipated and a more formal evaluation is not considered necessary.
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REFERENCES
City of Carlsbad. General Plan Update Noise Element. 2015.
City of Carlsbad. Noise Guidelines Manual. September, 1995.
Federal Highway Administration. Roadway Construction Noise Model. 2006. Users Guide Table 1.
Federal Highway Administration, Transportation Noise Model Version 2.5, 2004.
Federal Transit Administration. Transit Noise and Vibration Impact Assessment. May 2006.
Federal Rail Administration (FRA) Guidelines (Report Number 293630-1), December 1998.
Hanson, Carl E., Towers, David A., and Meister, Lance D. (2006, May). Transit Noise and
Vibration Impact Assessment. Federal Transit Administration, Office of Planning and
Environment.
http://www.fta.dot.gov/documents/FTA Noise and Vibration Manual.pdf
Harris Miller Miller & Hanson Inc. Transit Noise and Vibration Impact Assessment, Final Report. May
2006.
Institute of Transportation Engineers (ITE) publication Trip Generation, 8th Edition
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Appendix A
Monitoring Data Sheet
Appendix A
FIELD NOISE MEASUREMENT DATA
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7116 Project Name: e" is /'1A:utS!JA Page I 1 of I e.fl?Jt-.
Project#: Day I Date rzJ·~ /15' My Name.
Sound Level Meter Calibrator Weather. Meter '·· Model# Model# -Model# Serial#
Serial t.' Serial# ..
Weighting: at/ C I Flat
Response: :~I Fast /lmpl
Pre-Test: dBA SPL Terrain: Hard 1 Soft /~1xeo ..
Post-Test: dBASPL Topo: .. ·· F"!at't Hilly (describe)
Windscreen: ~I No Wind: , ·Steady 1 Gusty
ID
:)
'Z.
Time Time Leq Lmin Lmax L10 L50 L90 Wind Spdl Temp RH Bar Psr Cloud
Start Stop Dir (mph) (oF) (%) (in Hg) Cover(%)
cq:'55_ /.0: itJ ·z;)-ZI 151.~ {ofi· '~?(;',_~ ~.( ~)3.4 ,')s ~ .. :i.e (g."!" ' o-.
10:2-? rO,'"f'' 03.t 50~0 7(;.. ~(,,1 (ol. / ~~.;:~ ~~-?!.L . .,
6-> 0
f
~
Roadway Name Location(s) I GPS Readinp(s):
Speed (postlobs)
I '1. ~~ ·-
Number of Lanes 2. t;;;). ( .q,.....,(j.J;
Width (pave/row) rz)( r(JI?-1-or 2-way _., tf'-Jf!::>, --e.. ·c.r C:;<..~ '-· l ..
Grade r:---f(!~j. {!~h~
Bus Stops f(O lf-10 . l .. . "
Stoplights At0 1Vo·· I ' . .I .. \ :·.
Street Parking i-(6:.! I .. I Automobiles I ':{!J t~_ n··, -.. ... -' """'. I
Medium Trucks (&-, 1-:r :s ~-. !""ll1~£:!::~ .. ~--~-(-z .. ~</1$/
Heavy Trucks ..._, .,. ...... ------"· C9 ..
!10 ~ ~ t 1 tj ~-. .)"'>.,
J -~
. • -~--------;;~-t!:._L~Ij """' . ~-.1Qf-?oas;.-<:',._..,
Other Noise Sources: distant aircra oadway traffi trains /landscaping I rus g leaves I children playing I dogs barking I birds vocalizing
~ ... . ' . ~ . •. .. . . ..• .. ~ ~
Notes and Sketches on Reverse
-:· ··-. ~ ... ·--·--·------.
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".
Ccityof
Carlsbad
STORM WATER
STANDARDS
QUESTIONNAIRE
E-34
Development Services
Land Development Engineering
1635 Faraday Avenue
760-602-2750
www.carlsbadca.gov
;: .;·. :., ·:;~~ :· :
< .··:-::' ,'-
To address post-development pollutants that may be generated from development projects, the City requires that new development and
significant redevelopment priority projects incorporate Permanent Storm Water Best Management Practices (BMP's) into the project
design per the City's Standard Urban Stormwater Management Plan (SUSMP). To view the SUSMP, refer to the Engineering Standards
(Volume 4, Chapter 2).
Initially this questionnaire must be completed by the applicant in advance of submitting for a development application (subdivision,
discretionary permits and/or construction permits). The results of the questionnaire determine the level of storm water standards that
must be applied to a proposed development or redevelopment project. Depending on the outcome, your project will either be subject to
'Standard Stormwater Requirements' or be subject to additional criteria called 'Priority Development Project Requirements'. Many
aspects of project site design are dependent upon the storm water standards applied to a project.
Your responses to the questionnaire represent an initial assessment of the proposed project conditions and impacts. City staff has
responsibility for making the final assessment after submission of the development application. If staff determines that the questionnaire
was incorrectly filled out and is subject to more stringent storm water standards than initially assessed by you, this will result in the return
of the development application as incomplete. In this case, please make the changes to the questionnaire and resubmit to the City.
If you are unsure about the meaning of a question or need help in determining how to respond to one or more of the questions, please
seek assistance from Land Development Engineering staff.
A separate completed and signed questionnaire must be submitted for each new development application submission. Only one
completed and signed questionnaire is required when multiple development applications for the same project are submitted concurrently.
In addition to this questionnaire, you must also complete, sign and submit a Project Threat Assessment Form with construction permits
for the project.
Please start by completing Step 1 and follow the instructions. When completed, sign the form at the end and submit this with your
application to the city.
1. Is your project LIMITED TO constructing new or retrofitting paved sidewalks, bicycle lanes or trails that meet
the following criteria: (1) Designed and constructed to direct storm water runoff to adjacent vegetated areas, or
other non-erodible permeable areas; OR (2) designed and constructed to be hydraulically disconnected from
paved streets or roads; OR (3) designed and constructed with permeable pavements or surfaces in
accordance with USEPA Green Streets uidance?
2. Is your project LIMITED TO retrofitting or redeveloping existing paved alleys, streets, or roads that are
designed and constructed in accordance with the USEPA Green Streets guidance?
YES NO
X
X
If you answered "yes" to one or more of the above questions, then your project is NOT a priority development project and therefore is
NOT subject to the storm water criteria required for priority development projects. Go to step 4, mark the last box stating "my
project does not meet PDP requirements" and complete applicant information.
E-34 Page 1 of 3 Effective 6/27/13
. .
(City of
arlsbad
STORM WATER
STANDARDS
QUESTIONNAIRE
E-34
Development Services
Land Development Engineering
1635 Faraday Avenue
760-602-2750
www.carlsbadca.gov
STEP3 ..
TO BE COMPLETED FOR REDEVELOPMENT PROJECTS THAT.ARE PRIORITY I)EVEJ,.;OPEMENT PROJECTS ONLY.·
Comolete the questions below regarding vour redevelopment oroiect: YES
Does the redevelopment project result in the creation or replacement of impervious surface in an amount of less than I I 50% of the surface area of the oreviouslv existina develooment?
If you answered "yes,• the structural BMP's required for Priority Development Projects apply only to the creation or replacement of
impervious surface and not the entire development. Go to step 4, check the "my project meets PDP requirements" box and
compleblt applicant information.
NO
X
If you answered •no,• the structural BMP's required for Priority Development Projects apply to the entire development. Go to etep 4,
check the "my proJect meets PDP requirements" box and complete applicant information.
. STEP4
CHECK Tl£ APPROPRiATE BOX AND COIIPLETE APPLICANT INFORIIATJ()N
1J1 My project meets PRIORITY DEVELOPMENT PROJECT (PDP) requirements and must comply with additional stormwater
criteria per the SUSMP and I understand I must prepare a Storm Water Management Plan for submittal at time of application.
I understand flow control (hydromodification) requirements may apply to my project. Refer to SUSMP for details.
CJ My project does not meet PDP requirements and must only comply with STANDARD STORMWATER REQUIREMENTS per
the SUSMP. As part of these requirements, I will incorporate low impact development strategies throughout my project.
Applicant Information and Signature Box
Address: 725 Grand Aveune Accessor's Parcel Number(s):
203-303-21
Applicant Title: ~ ... ~ . ··~~
Date: .t4,. Js;,<t, j \i; ,
This Box for City Use Only
City Concurrence:
By:
Date:
Project 10:
I YES I NO
I I
• Environmentally Sensitive Areas include but are not limited to all Clean Water Act Section 303(d) impaired water bodies; areas
designated as Areas of Special Biological Significance by the State Water Resources Control Board 0Nater Quality Control Plan for the
San Diego Basin (1994) and amendments); water bodies designated with the RARE beneficial use by the State Water Resources
Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments); areas designated as preserves or their
quivalent under the Multi Species Conservation Program within the Cities and County of San Diego; and any other equivalent
environmentally sensitive areas which have been identified by the Copermittees.
E-34 Page 3 of3 Effeclive 6127113
~,~. ~~ ~ CITY OF
CARLSBAD
HAZARDOUS WASTE
AND SUBSTANCES
STATEMENT
P-1(C)
Development Services
Planning Division
1635 Faraday Avenue
(760) 602-4610
www.carlsbadca.gov
Consultation of Lists of Sites Related to Hazardous Wastes
(Certification of Compliance with Government Code Section 65962.5)
Pursuant to State of California Government Code Section 65962.5, I have consulted the
Hazardous Waste and Substances Sites List compiled by the California Environmental
Protection Agency and hereby certify that (check one):
if The development project and any alternatives proposed in this application are not contained on the
lists compiled pursuant to Section 65962.5 of the State Government Code.
D The development project and any alternatives proposed in this application!!! contained on the lists
compiled pursuant to Section 65962.5 of the State Government Code.
APPLICANT
Name: f-11!./t. Mt}~-112M t/!U{II""ffC/S
Address: dl73 S1fZI<. 1/Y£, So/Z ,z;V
CAJ!?SE~D,. cA 9ho"(
PROPERTY OWNER
Name:--'Pitr...:...:..:._.:.r..IJII...:..~......:6::..;..._f/_IU.....Iio'='~--
Address: /~5'" G!RI/y!) ?fv'£
&fY=SB,ff) I c;,t 9~~p
I
Phone Number: /(p~-'13/--777) Phone Number: 7t,o-ltJ.f-~15"1J
Address of Site: f ttl{' (3~!) tfr£
Local Agency (City and County): C/112.-LS .81/tJ S/IJV .})/£GO
Assessor's book, page, and parcel number: ;zo ~ -?() 3 -tl-1' /) 6
Specify list(s): ___________________________ _
Regulatory Identification Number:. _____________________ _
Date of List: ____________________________ _
Applicant Signature/Date Property Owner Signature/Date
The Hazardous Waste and Substances Sites List (Cortese List) is used by the State, local
agencies and developers to comply with the California Environmental Quality Act requirements
in providing information about the location of hazardous materials release sites.
P-1(C) Page 1 of2 Revised 02/13
/.f~ ,<~<
"~ CITY OF
CARLSBAD
EIA INFORMATION
FORM
P-1(0)
INSTRUCTION SHEET FOR COMPLETING AN
ENVIRONMENTAL IMPACT ASSESSMENT
INFORMATION FORM
Development Services
Planning Division
1635 Faraday Avenue
(760) 602-4610
www.carlsbadca.gov
This Environmental Information Form will be used to assist staff in determining what type of
environmental documentation (i.e., Environmental Impact Report, Mitigated Negative
Declaration, Negative Declaration or Exemption) will be required to be prepared for your
application, per the California Environmental Quality Act (CEQA) and Title 19 of Carlsbad's
Municipal Code. The clarity and accuracy of the information you provide is critical for purposes
of quickly determining the specific environmental effects of your project.
Any environmental studies (i.e., biological, cultural resource, traffic, noise) that are
necessary to substantiate a "no impact" or "yes impact" determination should be
submitted as an attachment to this Environmental Information Form. This is especially
important when a Negative Declaration is being sought. The more information provided in this
form, the easier and quicker it will be for staff to complete the Environmental Impact
Assessment Form -Initial Study.
P-1(0) Page 1 of4 Revised 07/10
ENVIRONMENTAL INFORMATION FORM
(To be Completed by Applicant)
Date Filed: -----------(To be completed by City)
Application Number(s): -------------------------
General Information
1. Name of project: 77/~ 6~[) /J1A'"/)!.Solt}
2. Name of developer or project sponsor: P/tr 1!1 ~6VI ~
Address: 7tfl t;" {1!/111/) zfYCr
City, State, Zip Code: t/t!!t.5$tft) 1 t?f1 9~01
Phone Number: '?feb -7rJ.(/ -(o 15"'0
3. Name of person to be contacted concerning this project: ~/lj.. /Yio~ -/)1/ltt ~f(
Address: e-J.t15 $A:l/( ztr;C, c}IIJTE X{)
City, State, Zip Code: ~5 &,t/), Clf 'f>tJ~J' •
PhoneNumber: -"l'~o-f3/-1115'
4. Address of Project: '/'~ 6,/lA;1vj) thf.f-•
Assessor's Parcel Number: i)-{) ~ -3 () 3 -,2/-{) 0
5. List and describe any other related permits and other public approvals required for this project,
including those required by city, regional, state and federal agencies:
NOIVZ:
6. Existing General Plan Land Use Designation: V /Lt.A-6J£.. (V)
7. Existing zoning district: _ ...... V....:.M_..;..P.;...._ _________________ _
8.
9.
Existing land use(s): _ _,_V.....:£;;....;./J----'(_1.:...51_~{)-=-.fi.._fi....:...{_t-.=6:;....__ _________ _
Proposed use of site (Project for which this form is filed): _-.Qt.[_,C,:;;....:...;;1J/;..s...:.../L-~,'---"'(J-"f1_.ft1:......;..;{'c,£~'-----7
Project Description
10. Site size: I~~ D tL/ S-F.
11. Proposed Building square footage: --'J'--l+l-"'l__._1.....:q_S_· F._. -----------
12: Number of floors of construction: _'f..;...__-f __ (Lo_fJ_~ __ :P_6U( __________ _
13. Amount of off-street parking provided: _....::CJ._t{:__--=S....!i~{l'rt{;~.:.........;;:S~---------
14. Associated projects: _...;;.tJ_{)...:..AJ.....:(.~v-------------------
P-1(0) Page 2 of4 Revised 07/10
15. If residential, include the number of units and schedule of unit sizes: _4.;__ ...... tA~WL.....;;lJ....:O'-----
{J)JJT> ' UIVII' A-,;::; 4 f.o1 5 .,r:
-I, t./21 s.r. UA!tl c;, --I
v~tl /) ':-111Ptf s.r:
16. If commercial, indicate the type, whether neighborhood, city or regionally oriented, square footage
of sales area, and loading facilities: -------------------
/'+-.fJ-t,. a{J!1t: ~)bS' :5·/': -/VP '7Uc/41f/T Jl£'1
2~ fl~ lP drrtc£.::: i ?99 s.r, -/1/o 71WA1VTJ fff
-5r"' fU-7Yf. orrtt£..: t 79tf .>.t: , A# ~N#Nn '1£7:
17. If industrial, indicate type, estimated employment per shift, and loading facilities: -----
18. If institutional, indicate the major function, estimated employment per shift, estimated occupancy,
loading facilities, and community benefits to be derived from the project: --------
AJift
19. If the project involves a variance, conditional use or rezoning applications, state this and indicate
clearly why the application is required: ------------------
1'1/A I
P-1(0) Page 3 of4 Revised 07/1 0
Are the following items applicable to the project or its effects? Discuss all items checked yes (attach
additional sheets as necessary).
Yes No
20. Change in existing features of any bays, tidelands, beaches, or hills, or substantial D :g
alteration of ground contours.
21. Change in scenic views or vistas from existing residential areas or public lands or D M
roads.
22. Change in pattern, scale or character of general area of project. D ~
23. Significant amounts of solid waste or litter. D ~
24. Change in dust, ash, smoke, fumes or odors in vicinity. D M
25. Change in ocean, bay, lake, stream or ground water quality or quantity, or D ~
alteration of existing drainage patterns.
26. Substantial change in existing noise or vibration levels in the vicinity. D ]2r:
27. Site on filled land or on slope of 1 0 percent or more. D ~
28. Use of disposal of potentially hazardous materials, such as toxic substances, D ~
flammables or explosives.
29. Substantial change in demand for municipal services (police, fire, water, sewage, D %' etc.).
30. Substantially increase fossil fuel consumption (electricity, oil, natural gas, etc.). D .2(
31. Relationship to a larger project or series of projects. D ~
Environmental Setting
Attach sheets that include a response to the following questions:
32. Describe the project site as it exists before the project, including information on topography, soil
stability, plants and animals, and any cultural, historical or scenic aspects. Describe any existing
structures on the site, and the use of the structures. Attach photographs of the site. Snapshots
or Polaroid photos will be accepted.
33. Describe the surrounding properties, including information on plants and animals and any
cultural, historical or scenic aspects. Indicate the type of land use (residential, commercial, etc.),
intensity of land use (one-family, apartment houses, shops, department stores, etc.), and scale of
development (height, frontage, set-back, rear yard, etc.). Attach photographs of the vicinity.
Snapshots or polaroid photos will be accepted.
Certification
I hereby certify that the statements furnished above and in the attached exhibits present the data and
information required for this initial evaluation to the best of my ability, and that the facts, statements, and
information presented are true and correct to the best of my knowledge and belief.
Date: _tf_,_?_o_ ... _/S ___ _ Signature: ~ ~..-=:;;,.__--
For:
P-1(D) Page 4 of4 Revised 07/10