HomeMy WebLinkAboutSDP 02-19; LA COSTA CANYON HOMES; ACOUSTICAL ANALYSIS REPORT; 2002-12-16I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I .
I
I
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
1.
2.
3.
4.
5.
6.
7.
8.
EXECUTIVE SUMMARY
INTRODUCTION
2.1 Project Location
2.2 Project Description
TABLE OF CONTENTS
ENVIRONMENTAL SETTING
3.1 Existing Noise Environment
3.2 Future Noise Environment
METHODOLOGY AND EQUIPMENT
4.1 Methodology
4.2 Equipment
IMPACTS
MITIGATION
CERTIFICATION
REFERENCES
Thomas Guide Map
Assessor's Parcel Map
Satellite Aerial Photograph
Topographic Map
Land Use Map
ATTACHMENTS
Site Plan Showing Future Noise Contours
1
2
3
5
6
7
8
9
Site Plan Showing Future Exterior CNEL Values at Various Receiver Locations With
Retaining Wall and Sound Attenuation Barrier
Sound32 Data and Results
'
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1.0 EXECUTIVE SUMMARY
The proposed project is the construction of a two-story, five-unit apartment complex. The project
is to be located on a 16,800 square-foot lot in the 2700 block of La Costa Avenue, City of Carlsbad,
California.
The present and future noise environment is primarily the result of vehicle traffic on La Costa
Avenue, to the south of the project site. La Costa Avenue is a two-way, east-west, four-lane street
merging to three lanes near the project site. This section of La Costa Avenue, between Calle Madero
and Rancho Sante Fe Road, has a current traffic volume of 11,900 average daily trips (ADT),
according to the San Diego Association of Governments (SanDAG) regional website's 2001 Traffic
Forecasts. The SanDAG projected traffic volume for the year 2020 is 20,000 ADT for this section
of La Costa Avenue.
The noise regulations applicable to this project are found in the City of Carlsbad Noise Element to
the General Plan. The regulations limit exterior noise impacts at residential outdoor use areas to a
Community Noise Equivalent Level (CNEL) of 60 decibels A-weighted (dBA), and interior noise
levels within habitable space to 45 CNEL. Please note that CNEL always refers to A-weighted
decibels.
Without consideration of the proposed project buildings, the calculated future exterior noise levels
exceed 60 CNEL on the entire project site due to traffic noise from La Costa Avenue.
The planned five apartment buildings and retaining wall along the western property line, as
designed, will attenuate noise levels to 60 CNEL or less at the outdoor use areas of Units 1, 2, 3, and
4; however a 6.5-foot-high sound attenuation barrier will be necessary to mitigate elevated noise
levels at the outdoor use area of Unit 5. The sound attenuation barrier shall be attached to the . .
southeast corner of unit five, extending eleven feet east to the property line, with a twelve-foot
return along the property line. This mitigation is feasible and attainable through standard
construction practices. A detailed description of the recommended noise mitigation is provided in
Section 6 of this report.
'
Douglas Eilar & Associates Project #A21116 December 16, 2002 Pagel
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
2.0 INTRODUCTION
This acoustical analysis report is submitted to satisfy the requirements for a site development plan
within the City of Carlsbad. Its purpose is to assess the impacts of noise from traffic and other
possible sources on the proposed project site and to determine the feasibility of mitigation, if
necessary, to reduce exterior noise levels to 60 CNEL or less, in compliance with the City of
Carlsbad noise regulations.
All noise level or sound level values presented herein are expressed in terms of decibels (dB), with
A-weighting (dBA) to approximate the hearing sensitivity of humans. Time-averaged noise levels
are expressed by the symbol LEQ, for a specified duration. The Community Noise Equivalent Level
(CNEL) is a24-hour average, where sound levels during evening hours of7p.m. to 10 p.m. have an
added 5 dB weighting, and sound levels during nighttime hours of 10 p.m. to 7 a.m. have an added
10 dB weighting. Sound levels expressed in CNEL are always based on A-weighted decibels. This
is similar to the Day-Night sound level, LnN, which is a 24-hour average with an added 10 dB
weighting on the same nighttime hours but no added weighting on the evening hours. These metrics
are used to express noise levels for both measurement and municipal regulations, for land use
guidelines, and enforcement of noise ordinances. Some of the data may be presented as octave-band
filtered sound levels. Further explanation can be provided upon request.
2.1 Project Location
The project consists of a rectangularly-shaped property, 100 feet wide (La Costa Avenue frontage)
by 160 feet deep, located on the northern side of La Costa Avenue. La Costa Avenue is a three-lane,
two-way street at this location, traveling east-west. The project site is approximately 500 feet west
of the intersection of La Costa Avenue and Romeria Street. The Assessor's parcel number (APN)
is 216-300-17-00. No address is currently assigned to this property; th~ project site is located on the
2700 block of La Costa Avenue. The current and future zoning for this area is RD-M (Residential
Density-Multiple). The project location is shown on the Thomas Guide Map (Page 1147, Grid Hl)
in Attachment 1. An Assessor's parcel map, satellite aerial photograph, topographic map, and land
use map are also provided as Attachments 2 through 5.
2.2 Project Description
The proposed project is the construction of a two-story, five-unit apartment complex. Each
apartment unit has a two-car garage and a small outdoor use area. There is a driveway leading from
La Costa Avenue to the center of the complex, with three guest parking spots in the southwest
corner of the site. Units 1, 2, 3, and 4 are located along the northern side of the property facing the
canyon, while Unit 5 is on the southeast corner of the property facing La Costa Avenue. All five
units are attached and are to be constructed on a level plot of land, on a hill with a 7.5% grade,
sloping downward toward the east along La Costa Avenue. The property is surrounded by a
residential community on the south, east, and west sides. A steep slope leading to a canyon lies
'
Douglas Eilar & Associates Project #A21116 December 16, 2002 Page2
I
I
I
I·
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
behind the property on the north. Neighboring developments in the immediate area include a small
apartment complex to the east. A vacant lot is located to the west of the project site.
3.0 ENVIRONMENTAL SETTING
3.1 Existing Noise Environment
The present on-site noise environment is a result of vehicle traffic noise from La Costa Avenue. A
site inspection was conducted on July 30, 2001, at 9:30 a.m. During the site visit, a traffic noise
measurement was conducted for La Costa Avenue. While the noise measurement was being
conducted, 75% of the vehicle traffic was traveling west on La Costa Avenue, in the lanes closest to
the property location and 25% was traveling east, merging from two lanes into one. For more detail,
please refer to the Sound32 Data and Results (Attachment 8).
In the vicinity of the project, La Costa Avenue is a two-way, east-west, four-lane major road, with
the two eastbound lanes merging to one lane just west of the project site. There are curbs, gutters,
and bicycle lanes on both sides of the street, and a sidewalk on the northern side of the road, closest
to the project. La Costa Avenue is approximately 64 feet wide curb-to-curb, with a posted speed
limit of 45 mph.
Current and projected future traffic volumes for the roadway section adjacent to the project site are
shown in Table 1. Traffic volumes are given as average daily trips (ADT). •
" ' , .•
Table 1. Over3:H: Roadway Traffi~ lnformatt~m '.
,. , ', ' ,,,, ',
'
Roadway Name Speed Limit Current Projected
(Year2020)
La Costa Avenue 45mph ll,900ADT 20,000ADT
Current and projected roadway conditions and traffic information for La Costa Avenue were
provided by San Diego Association of Governments (SanDAG) GIS, http://pele.sandag.org.
Measured Noise Level
An on-site traffic noise measurement was conducted during the morning on Monday, July 30, 2001.
The weather was clear with no wind, low humidity, and a temperature of 70°F. A 15-minute
continuously recorded sound-level measurement was conducted to obtain an integrated and stable
LEQ· The measured noise level and related weather conditions are presented in Table 2, on the
following page.
'
Douglas Eilar & Associates Project #A21116 December 16, 2002 Page3
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
; ., ''
'" , '' ' ~ ,, , " ·_ ',
• Tabie 2. On-Site Nojse Measurement for La Costa Avenue : . , ,,, ., ,.
Date Monday, July 30, 2001
Time 9:45 a.m. -10:00 a.m.
Conditioni$ Temperature Approximately 70°F, Clear Skies
Low Humidity, No Wind
Measured Noise Level 69.5 dBALEQ
Calculated Noise Level
Noise levels were modeled for the site using the methodology described in Section 4.1, for the
locations, conditions, and traffic volumes counted during the noise measurement. The calculated
noise levels (LEQ) were compared with the measured on-site noise levels to determine if adjustments
or corrections ( calibration) should be applied to the Sound32 traffic noise prediction model.
Adjustments are intended to account for site-specific differences, such as reflection and absorption,
which may be greater or lesser than accounted for in the model.
The measured noise level of 69.5 dBA LEQ was compared to the calculated (modeled) noise level of
68.8 dBA LEQ, for the same conditions and traffic flow. Since there is only a 0.7 dB difference
between the measured noise level and the calculated noise level, no adjustment was necessary to
calculate future noise levels for this location. Please ref er to Table 3.
', '.:' :.' ::, Table-3. Cal~ulatedVersus Measured Traffic;Noi~_eDati ..
Roadway Calculated Measured • Difference Correction
La Costa Avenue 68.8 dBALECl 69.5 dBA LEO 0.7dB None Applied
3.2 Future Noise Environment
The projected future noise environment at the site will be a result of vehicle traffic on La Costa
Avenue. Estimates for future (year 2020) traffic volumes were obtained from the San Diego
Association of Governments (SanDAG) GIS, http://pele.sandag.org, SanDAGTraffic Forecast 2020.
The future projected traffic volume for this section of La Costa Avenue is 20,000 ADT. Future truck
percentages were not available. A mix of 1.5% medium trucks and 0.5% heavy trucks was used in
the model for La Costa Avenue, based on experience and on-site observations. This is expected to
provide a worst-case scenario for the purpose of this analysis. For further vehicle percentage
breakdown and evaluation, refer to the Sound32 Data and Results, Attachment 8.
The calculated future noise level at the southern property line is approximately 71 CNEL. Without
mitigation or intervening structures, the future 70 CNEL traffic noise contour will extend
' '
Douglas Eilar & Associates Project # A21116 December 16, 2002 Page4
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
approximately 86 feet north of the La Costa Avenue centerline, and parallel La Costa Avenue at this
distance. The 65 CNEL contour will be located approximately 100 feet north of the project's
southern property line, and will parallel the roadway at this distance. Please see the site plan
showing future noise contours (Attachment 6).
4.0 METHODOLOGY AND EQUIPMENT
4.1 Methodology
Field Measurement
Typically, a one-hour equivalent sound level measurement (LEQ, A-weighted) is recorded for at least
one noise-sensitive location on the site. During the noise measurement, vehicle counts of cars,
medium trucks (double tires/two axles), and heavy trucks (three or more axles) are made for the
corresponding road segment. Supplemental sound measurements of one hour or less in duration are
often made to further describe the noise environment of the site. For measurements ofless than one
hour duration, the measurement time is long enough for a representative traffic volume to occur and
the noise level (LEQ) to stabilize; 15 minutes is usually sufficient. The vehicle counts are then
converted to one-hour equivalent volumes by using the appropriate multiplier.
Other field data gathered includes measured or estimated distances, angles-of-view, slopes,
elevations, roadway grades, and vehicle speeds. This data is checked against the available maps and
records.
Roadway Noise Calculations
The Sound32 program, released by the California Department of Transportation, Division of New
Technology, Materials, and Research was used to calculate the future Hourly Noise Level (HNL) •
at various locations at the project site. The average daytime HNL is computed with Sound32, using
a daytime hourly average traffic volume of 0.058 times the ADT. This computation is based on the
methodology developed in the Wyle Laboratories Study, which states that 87% of the traffic volume
on an average roadway typically occurs between the hours of 7 a.m. and 10 p.m. The HNL is
equivalent to the LEQ, and both are converted to the CNEL by adding 2.0 decibels. Future CNEL
values are calculated for desired receptor locations using future road alignment, elevations, lane
configurations, projected traffic volumes, estimated truck mixes, and vehicle speeds. Noise
attenuation methods may be modeled, tested, and planned with Sound32, as required.
'
Douglas Eilar & Associates Project #A21116 December 16, 2002 Page5
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
4.2 Equipment
Some or all of the following equipment was used at the site to measure existing noise levels:
•
•
•
•
•
Larson Davis System 824 Real Time Analyzer, Serial #1549
Quest/Electret Non-Directional Microphone, Type MK224, Serial# 89355
Quest Sound Level Meter Calibrator, Model# CA22, Serial# J0040042
Hand-bearing magnetic compass, microphone windscreen, tripod
1000-Foot distance measurement wheel, tape measure, Sony video camera
The sound level meter was field-calibrated immediately prior to the noise measurement, to ensure
accuracy. All sound level measurements conducted and presented in this report, in accordance with
these regulations, were made with a sound level meter that conforms to the American National
Standards Institute specifications for sound level meters (ANSI SI.4-1971). All instruments are
maintained with National Bureau of Standards traceable calibration, per the manufacturers
standards.
5.0 IMPACTS
Exterior
Assuming no changes are made to the current plans, future noise levels at the outdoor use areas of
Units 1, 2, 3, and 4, located on the northern end of the property facing the canyon, will not exceed
60 CNEL. These backyard areas will be adequately shielded by the proposed retainingwall running
along the western boundary_ of the property, and by the apartment buildings themselves. Noise
levels at these exterior locations will range from 47.7 to 51.1 CNEL.
Unit 5, however, has been designed with its outdoor use area located on the southeast corner of the
property. This outdoor use area is only moderately shielded from traffic noise on La Costa Avenue
by a small neighboring building. Without mitigation, the exterior noise levels at the building facade
of Unit 5 will range from 68.5 to 71.3 CNEL, surpassing the exterior noise limit of 60 CNEL for
residential land use, and potentially producing interior noise levels in excess of 45 CNEL. Exterior
mitigation will thus be required for this area of the project site in order for it to comply with the City
of Carlsbad noise limits. Please see the site plan in Attachment 7 for an understanding of the
locations of the outdoor use areas ( the locations of the five receivers) and of the retaining wall.
Interior
The analysis presented herein only addresses the impact of future exterior noise on the property.
With the high levels of exterior noise predicted above, it is possible that interior noise levels in the
apartment units may surpass the city limit of 45 CNEL. Additional mitigation may therefore be
\
Douglas Eilar & Associates Project# A21116 December 16, 2002 Page6
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
required in the form of insulated walls, mechanical ventilation, and enhanced window glazing. When
detailed building plans become available, it may be necessary to conduct an exterior-to-interior
acoustical analysis.
6.0 MITIGATION
Exterior
The retaining wall on the western property line proposed in the site plan (Attachment 7) was
included in the noise impact calculations; therefore, this wall must remain in the project plans to
ensure that future noise levels in the backyards of Units 1, 2, 3, and 4 will comply with the City of
Carlsbad noise limits, as calculated.
Additionally, a 6.5-foot sound attenuation barrier will be required to attenuate the exterior noise
levels at the Unit 5 outdoor use area to less than 60 CNEL. The sound attenuation barrier should
be constructed at the southeast corner of unit five, extending eleven feet east to the property line
and returning twelve feet northward along the property line. Please refer to Attachment 7 for an
illustration of this sound attenuation barrier. The pad elevation at this point is 116.5 feet, supported
by the small retaining wall of keystone blocks at the eastern end of the southern property line, as
seen on the site plan (Attachment 7). A minimum height of six and one-half feet above the pad
elevation is required for this barrier.
The sound attenuation wall shall be constructed as either a solid wall of masonry, wood, plastic,
fiberglass, or a combination of these materials, with no cracks or gaps through or below the wall.
Any seam or cracks must be filled or caulked; the wood can be tongue-and-groove. If wood is used,
it must be at least 7/s-inch thick or have a density of at least 3½ pounds per square foot. Glass may
be used on the upper portion of the wall if it is desirable to preserve a view. Any gate(s) in such a
sound attenuation wall must be designed with overlapping closures. It is acceptable to extend any
portion of any sound attenuation barrier, to provide protection to unprotected portions of an
apartment unit, to create more outdoor usable space, or to provide further noise protection for other
lots.
Please refer to the site plan showing the recommended sound attenuation wall (Attachment 7), and
to the Sound32 Data and Results (Attachment 8). The future exterior noise levels at five selected
receiver locations, with the recommended sound attenuation wall in place, are presented in Table 4,
on the following page.
'
Douglas Eilar & Associates Project #A21116 December 16, 2002 Page7
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
2.
3.
4.
5.
6.
7.
8.0 REFERENCES
1998 California Uniform Building Code, Based on the 1997 Uniform Building Code, Appendix
Chapter 12, Division II -Sound Transmission Control, Section 1208 -Sound Transmission
Control.
California Department of Transportation, Sound32 Traffic Noise Model.
California Noise Insulation Standards, adopted 2/14/74, California Administrative Code,
Title 24.
City of Carlsbad, Noise Element to the General Plan.
NBS Building Sciences Series 77, Acoustical and Thermal Performance on Exterior
Residential Walls, U.S. Department of Commerce/National Bureau of Standards, November
1976.
San Diego Association of Governments (SanDAG) GIS, http://pele.sandag.org, SanDAG
Traffic Forecast 2020.
Wyle Laboratories, Development of Ground Transportation Systems Noise Contoursforthe
San Diego Region, December 1973.
Douglas Eilar & Associates Project #A21116 December 16, 2002 Page9
POOR
QUALITY
ORIGINAL S
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Sound32 Data and Results
La Costa View Apartments
On-Site Noise Measurement for La Costa Avenue
Date Monday, July 30, 2001
Time 9:45 a.m. -10:00 a.m.
Temperature Approximately 70°F, Clear Skies Conditions Low Humidity, No Wind
Measured Noise Level 69.5 dBA LEQ
Traffic Count During Noise Measurement
Roadway Duration Medium Autos Name Trucks
La Costa Measured 15 Min. 130 7
Avenue One Hour (3 lanes) Equivalent 60 Min. 520 28
Traffic Information
ROADWAY SPEED LIMIT CURRENT ADT
NAME (miles per hour) (average daily trips)
La Costa Avenue 45 MPH 11,900 ADT
Current Traffic Study Information
La Costa Avenue (between Calle Madero and Rancho Santa Fe Road)
San Diego Association of Governments, Regional Web Sites
City of Carlsbad Traffic Counts as of December 1999
Future Projected Traffic Study Information
La Costa Avenue (between Calle Madero and Rancho Santa Fe Road)
San Diego Association of Governments, Regional Web Sites
City of Carlsbad -General Build Out Model 2020
Calculated versus Measured Traffic Noise Data
Roadway Calculated Measured Difference
La Costa Avenue 68. 8 dBA LEQ 69. 5 dBA LEQ 0. 7 dBA LEQ
'
Heavy Totals Trucks
0 137
0 548
PROJECTED ADT
(average daily trips)
20,000 ADT
Correction
None Applied
Douglas Eilar & Associates #A21116 Sound32 Data December 17, 2002 Page 1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Traffic Conditions
Roadway Total % Cars Medium Trucks Heavy Trucks
Name Condition ADT (Hourly) (Hourly) (Hourly)
La Costa 100 98.0% 1.5% 0.5% Future Avenue Conditions (3 lanes) 20,000 1136 17 5
************************************************************************************
SOUND32 RAW DATA FOR CALTRANS VERSION OF STAMINA2/OPTIMA
************************************************************************************
Calculated On-Site Traffic Noise Data (Model Calibration Data)
* * SOUND32 (CALTRANS VERSION OF STAMINA2/OPTIMA) * *
INPUT DATA FILE
BARRIER COST FILE
DATE
Untitled
TRAFFIC DATA
LANE AUTO
NO. VPH MPH
1
2
390
130
LANE DATA
LANE SEG. GRADE
NO. NO. COR.
1 1 NO
2 YES
3 YES
4 YES
5 YES
55
55
Douglas Eilar & Associates
MEAS.TXT
CALIF$.DTA
08-01-2001
MEDIUM TRKS
VPH MPH
X
-500.0
-100.0
80.0
500.0
566.0
966.0
21
7
55
55
y
42.0
42.0
42.0
42.0
42.0
42.0
HEAVY TRKS
VPH MPH
0
0
0
0
z
141. 0
141.0
135.0
105.0
100.0
120.0
#A21116 Sound32 Data
DESCRIPTION
2 Lanes
2 ... 1 lane
SEGMENT
DESCRIPTION
Ll Pl
Ll P2
Ll P3
Ll P4
Ll PS
Ll P6
'
December 17, 2002 Page2
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
2 1 NO -500.0 11. 0 141.0 L2 Pl
2 YES -100.0 11. 0 141. 0 L2 P2
3 YES 80.0 12.0 135.0 L2 P3
4 YES 500.0 20.0 105.0 L2 P4
5 YES 566.0 20.0 100.0 L2 PS
966.0 20.0 120.0 L2 P6
--========-----------================----======================================
BARRIER DATA
Barrier No. l Description: Westside House
Type -(4)CONCRETE
Height Increment (DELZ)= 0.0 No. Height Changes (P)=0
SEG. X y
l -4.0 81. 0
2 -4.0 187.0
3 -95.0 187.0
4 -95.0 81. 0
-4.0 81. 0
GROUND
(Z0)
l4l.0
141. 0
141. 0
141.0
l4l.0
TOP
(Z)
156.0
156.0
156.0
156.0
156.0
*Bl Pl
*Bl P2
*Bl P3
*Bl P4
*Bl PS
Barrier No. 2 Description: Eastside House
Type -(4)CONCRETE
BARRIER
HEIGHTS AT ENDS
* 15
* 15
* 15
* 15
* 15
Height Increment (DELZ)= 0.0 No. Height Changes (P)=0
SEG. X y
GROUND
(Z0)
TOP
(Z)
BARRIER
HEIGHTS AT ENDS
-------------------------------------------------------------------------------
l 427.0 197.0 108.0 123.0 *B2 Pl * 15
2 508.0 197.0 108.0 123.0 *B2 P2 * 15
3 508.0 87.0 108.0 123.0 *B2 P3 * 15
4 466.0 87.0 108.0 123.0 *B2 P4 * 15
5 466.0 161. 0 108.0 123.0 *B2 PS * 15
6 427.0 161. 0 108.0 123.0 *B2 P6 * 15
427.0 197.0 108.0 123.0 *B2 P7 * 15
------=====------==-===--======--------================================-=======
RECEIVER DATA
REC.
NO. X y z DNL PEOPLE ID
l 140.0 80.0 138.0 67 500 R-1
=======================================================================--=-====
'
Douglas Eilar & Associates #A21116 Sound32 Data December 17, 2002 Page3
I
REC REC ID DNL PEOPLE LEQ(CAL)
I 1 R-1 67. 500. 68.8
I DROP-OFF RATES
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
ALL LANE/RECEIVER PAIRS= 3.0 DEA
=====================================------=-===================---------======
K -CONSTANTS
ALL LANE RECEIVER/PAIRS 0. 0 DEA
=======================================================================--------
Future ADT Traffic Data Without Proposed Building to Produce Noise Contours
* * SOUND32 (CALTRANS VERSION OF STAMINA2/OPTIMA) * *
INPUT DATA FILE
BARRIER COST FILE
DATE
Untitled
FUT.TXT
CALIF$.DTA
08-01-2001
---=======--------------=-=====-------==================-======-======---------
TRAFFIC DATA
LANE
NO.
1
2
AUTO
VPH MPH
568
568
45
45
MEDIUM TRKS
VPH MPH
9
9
45
45
HEAVY TRKS
VPH MPH
3
3
45
45
DESCRIPTION
2 Lanes
2 ... 1 lane
----=======--=-=-=--=-=-=======---=-===================================--------
LANE DATA
LANE SEG. GRADE
NO. NO. COR.
1 1 NO
2 YES
3 YES
4 YES
5 YES
2 1 NO
2 YES
3 YES
Douglas Eilar & Associates
X
-500.0
-100.0
-80. 0
500.0
566.0
966.0
-500.0
-100.0
80.0
y z
42.0 141. 0
42.0 141. 0
42.0 135.0
42.0 105.0
42.0 100.0
42.0 120.0
11. 0 141. 0
11. 0 141.0
12.0 135.0
#A21116 Sound32 Data
SEGMENT
DESCRIPTION
Ll Pl
Ll P2
Ll P3
Ll P4
Ll PS
Ll P6
L2 Pl
L2 P2
L2 P3
'
December 17, 2002 Page4
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
4 YES
5 YES
500.0
566.0
966.0
20.0
20.0
20.0
105.0 L2 P4
100.0 L2 PS
120.0 L2 P6
=====--===============================================================-====-===
BARRIER DATA
Barrier No. 1 Description: Westside House
Type -(4)CONCRETE
Height Increment (DELZ)= 0.0 No. Height Changes (P)=0
SEG. X y
1 -4.0 81. 0
2 -4.0 187.0
3 -95.0 187.0
4 -95.0 81. 0
-4.0 81. 0
GROUND
(Z0)
141.0
141. 0
141.0
141. 0
141.0
TOP
(Z)
156.0
156.0
156.0
156.0
156.0
*Bl Pl
*Bl P2
*Bl P3
*Bl P4
*Bl PS
Barrier No. 2 Description: Eastside House
Type -(4)CONCRETE
BARRIER
HEIGHTS AT ENDS
* 15
* 15
* 15
* 15
* 15
Height Increment (DELZ)= 0.0 No. Height Changes (P)=0
SEG. X
1 427.0
2 508.0
3 508.0
4 466.0
5 466.0
6 427.0
427.0
y
197.0
197.0
87.0
87.0
161. 0
161.0
197.0
GROUND
(Z0)
108.0
108.0
108.0
108.0
108.0
108.0
108.0
TOP
(Z)
123.0
123.0
123.0
123.0
123.0
123.0
123.0
*B2 Pl
*B2 P2
*B2 P3
*B2 P4
*B2 PS
*B2 P6
*B2 P7
BARRIER
HEIGHTS AT ENDS
* 15
* 15
* 15
* 15
* 15
* 15
* 15
-------===--===-====---===-====================================================
RECEIVER DATA
REC.
NO. X y z DNL PEOPLE ID
-------------------------------------------------------------------------------
1 20.0 83.0
2 116.0 83.0
3 270.0 83.0
4 388.0 83.0
5 20.0 120.0
6 116.0 120.0
7 270.0 120.0
8 388.0 120.0
Douglas Eilar & Associates
146.0 67 500
139.0 67 500
131.0 67 500
121.0 67 500
146.0 67 500
139.0 67 500
131.0 67 500
122.0 67 500
#A21116 Sound32 Data
R-1
R-2
R-3
R-4
R-5
R-6
R-7
R-8
'
December 17, 2002 Page5
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
9 20.0 160.0 145.0 67 500 R-9
10 116. 0 160.0 139.0 67 500 R-10
11 270.0 160.0 131. 0 67 500 R-11
12 388.0 160.0 123.0 67 500 R-12
13 20.0 227.0 115.0 67 500 R-13
14 116.0 210.0 120.0 67 500 R-14
15 270.0 213.0 110.0 67 500 R-15
16 388.0 219.0 100.0 67 500 R-16
--============-=----------=-=-==-=--=-=-=======================================
REC REC ID DNL PEOPLE LEQ(CAL)
--------------------------------
1 R-1 67. 500. 68.8
2 R-2 67. 500. 69.0
3 R-3 67. 500. 69.1
4 R-4 67. 500. 69.1
5 R-5 67. 500. 64.8
6 R-6 67. 500. 66.2
7 R-7 67. 500. 66.4
8 R-8 67. 500. 66.2
9 R-9 67. 500. 62.5
10 R-10 67. 500. 64.0
11 R-11 67. 500. 64.3
12 R-12 67. 500. 63.8
13 R-13 67. 500. 59.9
14 R-14 67. 500. 61. 8
15 R-15 67. 500. 62.0
16 R-16 67. 500. 61.1
--------------------------------
DROP-OFF RATES
---------------
ALL LANE/RECEIVER PAIRS = 3.0 DBA
------=-=-==-=-==-=--=-=--=-====-==============================================
K -CONSTANTS
ALL LANE RECEIVER/PAIRS 0.0 DEA
----------------------------------=-=-====-====================================
Future ADT Traffic Data With Proposed Building to Calculate Exterior/Interior
* *
INPUT DATA FILE
BARRIER COST FILE
DATE
Legacy -La Costa
SOUND32 (CALTRANS VERSION OF STAMINA2/OPTIMA) * *
FUTBLDG2.TXT
CALIF$.DTA
12-16-2002
===============================================================================
'
Douglas Eilar & Associates # A21116 Sound32 Data December 17, 2002 Page6
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
TRAFFIC DATA
LANE AUTO
NO. VPH MPH
1
2
568
568
45
45
MEDIUM TRKS
VPH MPH
9
9
45
45
HEAVY TRKS
VPH MPH DESCRIPTION
3
3
45
45
2 Lanes
2 ... 1 lane
===================-==================--===============------------------------
LANE DATA
LANE SEG. GRADE
NO. NO. COR. X y z
SEGMENT
DESCRIPTION
-------------------------------------------------------------------------------
1 1 YES -500.0 42.0 141. 0 Ll Pl
2 YES -100.0 42.0 141.0 Ll P2
3 YES 80.0 42.0 135.0 Ll P3
4 YES 500.0 42.0 105.0 Ll P4
5 YES 566.0 42.0 100.0 Ll PS
966.0 42.0 120.0 Ll P6
2 1 YES -500.0 11. 0 141. 0 L2 Pl
2 YES -100.0 11. 0 141.0 L2 P2
3 YES 80.0 12.0 135.0 L2 P3
4 YES 500.0 20.0 105.0 L2 P4
5 YES 566.0 20.0 100.0 L2 PS
966.0 20.0 120.0 L2 P6
=====================================================================--=====---
BARRIER DATA
Barrier No. 1 Description: Westside House
Type -(2)MASONRY
Height Increment (DELZ)= 0.0 No. Height Changes (P}=0
SEG. X y
1 -4.0 81. 0
2 -4.0 187.0
3 -95.0 187.0
4 -95.0 81. 0
-4.0 81. 0
GROUND
(Z0)
141. 0
141. 0
141. 0
141. 0
141. 0
TOP
(Z)
156.0
156.0
156.0
156.0
156.0
*Bl Pl
*Bl P2
*Bl P3
*Bl P4
*Bl PS
Barrier No. 2 Description: Eastside House
Type -(2)MASONRY
BARRIER
HEIGHTS AT ENDS
* 15
* 15
* 15
* 15
* 15
Height Increment (DELZ)= 0.0 No. Height Changes (P)=0
SEG. X y
Douglas Eilar & Associates
GROUND
(Z0)
TOP
(Z)
#A21116 Sound32 Data
BARRIER
HEIGHTS AT ENDS
December 17, 2002 Page7
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1 427.0 197.0 108.0 123.0 *B2 Pl * 15
2 508.0 197.0 108.0 123.0 *B2 P2 * 15
3 508.0 87.0 108.0 123.0 *B2 P3 * 15
4 466.0 87.0 108.0 123.0 *B2 P4 * 15
5 466.0 161.0 108.0 123.0 *B2 PS * 15
6 427.0 161. 0 108.0 123.0 *B2 P6 * 15
427.0 197.0 108.0 123.0 *B2 P7 * 15
-------------------------------------------------------------------------------
Barrier No. 3 Description: Apartment Complex (Right half)
Type -(2)MASONRY
Height Increment (DELZ) = 0.0 No. Height Changes (P)=0
GROUND TOP BARRIER
SEG. X y (Z0) (Z) HEIGHTS AT ENDS
-------------------------------------------------------------------------------
1 411. 0 94.5 116 .5 141.5 *B3 Pl * 25
2 411.0 166.0 116.8 141. 8 *B3 P2 * 25
3 390.0 166.0 116.8 141. 8 *B3 P3 * 25
4 390.0 108.0 116.5 141. 5 *B3 P4 * 25
5 361. 0 108.0 116.5 141. 5 *B3 PS * 25
6 361. 0 87.0 116.5 141. 5 *B3 P6 * 25
7 385.0 87.0 116.5 141.5 *B3 P7 * 25
8 385.0 82.0 116.5 141. 5 *B3 PS * 25
9 405.0 82.0 116.5 141.5 *B3 P9 * 25
10 405.0 94.5 116. 5 141.5 *B3 Pl0 * 25
411. 0 94.5 116. 5 141.5 *B3 Pll * 25
Barrier No. 4 Description: Apartment Complex (Left half)
Type -(2)MASONRY
Height Increment (DELZ)= 0.0 No. Height Changes (P)=0
SEG. X
1 390.0
2 356.5
3 356.5
4 337.0
5 337.0
6 316.0
7 316.0
8 337.0
9 337.0
10 390.0
390.0
y
172. 0
172.0
176.0
176.0
170.0
170.0
112.0
112.0
138.0
138.0
172.0
GROUND
(Z0)
116.8
117.0
117.3
117 .3
117.3
117.5
117.5
117.3
117. 3
117.3
116.8
TOP
(Z)
141.8
142.0
142.3
142.3
142.3
142.5
142.5
142.3
142.3
142.3
141.8
*B4
*B4
*B4
*B4
*B4
*B4
*B4
*B4
*B4
*B4
*B4
BARRIER
HEIGHTS AT ENDS
Pl * 25
P2 * 25
P3 * 25
P4 * 25
PS * 25
P6 * 25
P7 * 25
PS * 25
P9 * 25
Pl0 * 25
Pll * 25
-------------------------------------------------------------------------------
Barrier No. 5 Description: Retaining Wall
Type -(2)MASONRY
'
Douglas Eilar & Associates #A21116 Sound32 Data December 17, 2002 Page8
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Height Increment (DELZ)= 0.0 No. Height Changes (P)=0
SEG. X
1 313.5
2 312.0
3 312.0
4 312.0
5 312.0
6 316.0
332.0
y
78.0
83.0
93.0
175.0
180.0
185.5
188.5
GROUND
(Z0)
116 .5
116.5
116.5
116.5
116.5
116. 5
116.5
TOP
(Z)
121.0
125.0
125.7
125.7
125.0
120.0
118.3
*BS Pl
*BS P2
*BS P3
*BS P4
*BS PS
*BS P6
*BS P7
BARRIER
HEIGHTS AT ENDS
* 5
* 9
* 9
* 9
* 9
* 4
* 2
Barrier No. 6 Description: Small retaining wall
Type -(4)CONCRETE
Height Increment (DELZ)= 0.0 No. Height Changes (P)=0
SEG. X y
1 359.0 82.0
2 368.0 73.0
3 405.0 73.0
4 411.0 76.0
416.0 86.0
GROUND
(Z0)
100.0
100.0
100.0
100.0
100.0
TOP
(Z)
116.5
116 .5
116.5
116.5
116.5
*B6
*B6
*B6
*B6
*B6
Barrier No. 7 Description: Sound Barrier
Type -(2)MASONRY
BARRIER
HEIGHTS AT ENDS
Pl * 17
P2 * 17
P3 * 17
P4 * 17
PS * 17
Height Increment (DELZ)= 0.0 No. Height Changes (P)=0
SEG.
1
2
3
X
405.0
414.0
416.0
416.0
y
82.0
82.0
86.0
94.5
GROUND
(Z0)
116 .5
116.5
105.0
105.0
TOP
{Z)
123.0 *B7 Pl
123.0 *B7 P2
123.0 *B7 P3
123.0 *B7 P4
Barrier No. 8 Description: Neighbor shack
Type -(2)MASONRY
BARRIER
HEIGHTS AT ENDS
* 7
* 7
* 18
* 18
Height Increment (D~LZ)= 0.0 No. Height Changes (P)=0
SEG.
1
2
3
4
X
421. 5
441.5
441.5
421.5
Douglas Eilar & Associates
y
82.5
82.5
117 .5
117.5
GROUND
(Z0)
110.0
110.0
110.0
110.0
TOP
(Z)
125.0 *BS Pl
125.0 *BS P2
125.0 *BS P3
125.0 *BS P4
# A21116 Sound32 Data
BARRIER
HEIGHTS AT ENDS
* 15
* 15
* 15
* 15
'
December 17, 2002 Page9
I
I 421.5 82.5 110.0 125.0 *BB PS * 15
--------==========-----------===----=================================-========= I RECEIVER DATA
I REC.
NO. X y z DNL PEOPLE ID
-------------------------------------------------------------------------------
1 373.0 80.0 121.5 67 500 R-1 I 2 410.0 88.0 121.5 67 500 R-2
3 400.0 174.0 122.0 67 500 R-3
4 380.0 178.0 122.0 67 500 R-4
I 5 347.0 181.0 122.0 67 500 R-5
6 326.0 178.0 122.5 67 500 R-6
I REC REC ID DNL PEOPLE LEQ(CAL)
1 R-1 67. 500. 69.3
I 2 R-2 67. 500. 57.1
3 R-3 67. 500. 48.8
4 R-4 67. 500. 46.9
I 5 R-5 67. 500. 45.7
6 R-6 67. 500. 49.1
----------==----=-------------==-----====--======-=============================
I DROP-OFF RATES
I ALL LANE/RECEIVER PAIRS= 3.0 DBA
----------====--==------------======-==========================================
I K -CONSTANTS
ALL LANE RECEIVER/PAIRS= 0.0 DEA
----------==-----=------------=====--=============--===========================
I
I
I
I
I
' I Douglas Eilar & Associates #A21116 Sound32 Data December 17, 2002 Page 10
I