HomeMy WebLinkAboutCT 85-15; PARK VIEW WEST; ACOUSTICAL ANALYSIS; 1985-05-01• f
ACOUSTICAL ANALYSIS
"PARK VIEW WEST"
CC.T. NO. 85-15)
Report ·011-85
prepared for:
Fay 0. Round, Jr.
Fay Round & Associates
2630 Cazadero Drive
Carlsbad, CA 92008
prepared by:
Alexander Segal, Ph.D.
Consultant in Acoustics
5222 Trojan Ave. # 316
San Diego, CA 92115
May 1985
Report 011-85
Park View West
•
1. SUMMARY OF FINDINGS
•
The project site is affected by traffic noise from Rancho Santa
Fe Road and La Costa Boulevard. Future traffic increase in the
area will result in significant noise level increase.
The results of the field noise level measurements and the
acoustical calculations have shown that the project topography
effectively shields the majority of the proposed residential lots
from t9e existing and forecasted traffic noise impacts. The only
area where noise could exceed L (or CNEL, which is almost the
same) limit of 65 decibel estaS?ished by the City of Carlsbad is
located at the south-western property boundary <Lots•• •• and
15>. 1 ~ l7 \ G
In order to reduce traffic noise impact to CNEL=65 dB or less in
"noise sensitive" outside living areas of the proposed project
we recommend~o construct a 7 ft high solid acoustical barrier
between Lot ylF and Rancho Santa Fe Road, and to construct a solid
wall 6 ft high above Lots '¥1/' and -elevation between these lots
and Mision Estancia. /@; H]
Since some of the proposed residen ial units could be affected
by noise exceeding CNEL=60 dB, the interior noise analysis should
be performed at the later stage of the project design to ensure
thet interior noise would not exceed 45 dB limit.
2 . INTRODUCTION
This Acoustical Analysis is submitted in accord with the City of
Carlsbad requirements regarding the acoustical evaluation of the
existing and forecasted noise impacts within the proposed 129
lots residential subdivision and development of necessary noise
mitigation programs.
The project is located on the east side of Rancho Santa Fe Road
south of its intersection with La Costa Boulevard in the City of
Carlsbad. Since the project site is in close proximity to Rancho
Santa Fe Road with forecasted ADT (Average Daily Traffic) of
44200, and La Costa Boulevard with forecasted ADT of 25800, a
high potential exists that future residents of the project might
be affected by high levels of traffic noise.
2
Report 011-85
Park View West
• •
The City of Carlsbad noise control regulations limit noise impact
to outside "noise sensitive" residential areas to Ld or CNEL of
65 dB. According to the California Administrativ~ Code (Title
25), residential units, located within an annual CNEL noise
contour of 60 dB or more, must be designed to limit intruding
exterior noise to an annual CNEL of 45 dB or less in any
habitable room.
3. METHOD OF EXTERIOR NOISE EVALUATION
The acoustical conditions in the area of the proposed development
were evaluated using the direct noise level measurements and the
theoretical methods of traffic noise prediction (FHWA RD 77-108
Traffic Noise Prediction Model). The National Reference Energy
Mean Noise Levels used in standard FHWA RD 77-108 Model were
replaced by the California Vehicle Noise Emission Levels recently
developed and suggested by Caltrans (Letter from the Office of
Transportation Laboratory, February 28, 1985). The calculations
were performed on the IBM PC computer.
The field noise measurements were performed by a Metrosonics
dB-306C Metrologger Digital Sound Level Analyzer, which is a Type
II instrument in accord with the ANSI S 1.4-1971 requirements.
Typically Metrosonics dB-306C was mounted on a tripod five feet
above the ground with a windscreen fitted to the microphone.
Before and after the noise measurements the meter was calibrated
with a C-302 Acoustical Calibrator. During the field noise
measurements the traffic count was taken where possible to aid
in comparison analysis between the theoretical and the field
results.
4. EXISTING NOISE ENVIRONMENT
The field noise measurements were made on May 14, 1985 between
the hours of 4:20 p.m. and 5:20 p.m. The noise readings were
taken at two locations along Rancho Santa Fe Road. Duration of
each test was approximately 10 minutes. The traffic flow data
(number of vehicles, traffic mix & speed) recorded during each
test were used to calculate theoretical Equivalent Noise Level
CLEQT) for the measurement locations.
In order to verify the validity of the theoretical noise
prediction calculation techniques used, the results of the field
noise level measurements (Field Equivalent Noise Level or LEQF)
were compared with that theoretically determined for the same
locations. The results of the field noise level measurements and
3
r-
Report 011-85
Park View West
• •
the results of the theoretical calculations are summarized below:
Site 1 (50 ft from Rancho Santa Fe Road centerline, approximately
200 ft from intersection with La Costa Boulevard).
Test 1 LEQF=66 dB; LEQT=65.7 dB <Attachment, Table 1)
Site 2 (50 ft from Rancho Santa Fe Road centerline. The northern
property boundary).
Test 2 LEQF=67 dB; LEQT=67.6 dB <Attachment, Table 2)
Test 3 LE~=67 dB; LEQT=67.8 dB <Attachment, Table 3)
Test 4 LEQF=67 dB; LEQT=67.5 dB <Attachment, Table 4)
As can be seen from the data above, the results of the field
noise level measurements are in a good agreement with the results
of the theoretical calculations.
Since the field noise measurements were performed at the "peak
hour" traffic conditions, the data obtained represent an average
current CNEL for the area. Therefore we can copclude that current
CNEL=65 dB noise contour is located somewhere at 70 to 90 ft from
Rancho Santa Fe Road centerline (for "level" topography). For
elevated or depressed (in relation to the road elevation) areas
distance to CNEL=65 dB noise contour could be different. More
precise determination of current
practical since future grading
project's topography, especially,
the road elevation.
noise contours location is not
will significantly modify the
lot elevation in relation to
The average traffic flow and speed data obtained during the field
tests were further used to determine future noise impacts within
the proposed residential subdivision.
5. FUTURE NOISE ENVIRONMENT
Future traffic increase due to the proposed project and other
projects in the area will result in corresponding traffic noise
level increase. The City of Carlsbad estimates that future
traffic on Rancho Santa Fe Road will increase to ADT of 44200
from current ADT of 11000. This could result in the future noise
level increase on approximately 6 dB. Future traffic on La Costa
Boulevard near the project might reach ADT of 25800. Therefore
significant noise impact to the residential lots at the northern
property boundary could be also anticipated.
4
Report 011-85
Park View West
• •
The forecasted traffic flow data were used in the theoretical
noise prediction analysis for determination of future acoustical
conditions at tho property. The acoustical calculations were
performed for several critical locations on the prnperty <Lots
17,18,22,73,81, and 83 along Rancho Santa Fe Road, and Lot 129
next to La Costa Boulevard). The results of the acoustical
calculations are presented on the Attachment Tables 6, 9, 10, 11,
12, 13, 14, and 15.
The results of the acoustical calculations show that the project
topography effectively shields the majority of the proposed
residential lots from traffic noise impact CCNEL below 65 dB
limit). Only future residents of Lot 17 (and potentially Lots 15
and 16) could be affected by traffic noise exceeding CNEL=65 dB
limit established by the City of Carlsbad.
The additional acoustical calculations have shown that traffic
noise impact to Lot 17 could be reduced to CNEL of 64 to 66 dB
by placing a 6.5 to 7.0 ft high solid acoustical barrier between
this lot and Rancho Santa Fe Road (Attachment, Tables 7 and 8).
In order to increase the noise attenuation effect of the barrier
and also to provide acoustical protection for Lots 15 and 16, we
recommend to construct an additional solid acoustical barrier
between Lots 17, 16, and 15 and Mission Estancia. The barrier
should be 5.5 to 6.0 ft high above the lots elevation. ,.
Since future noise impact to future residences could exceed
CNEL=60 dB limit we recommend to perform an interior acoustical
analysis at the later stage of the project design to ensure that
interior noise levels in habitable rooms would not exceed 45 dB.
No other noise mitigation measures are required.
5
~td
Alexander Segal, Ph.D.
Acoustical Engineer
• •
ATTACHMENT
TABLE 1
RESULTS OF TRAFFIC NOISE ANALYSIS
CFHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME -Park View West
ROAD & LOCATION -Rancho Santa Fe Road (Site 1)
******************************************************** * TRAFFIC FLOW DATA *
******************************************************** HOURLY NUMBER OF VEHICLES -793
'1/. OF MEDIUM TRUCf'\S 2. 2
'X. OF HEAVY TRUCKS . 1
SPEED IN MPH 40
ROAD GRADE ( 'X.) 2
******************************************************** * PROJECT GEOMETRY DATA *
******************************************************** SOURCE TO RECEIVER DISTANCE
:BARRIER TO RECEIVER DISTANCE
ROAD ELEVATION
RECEIVER ELEVATION
TOP OF BARRIER ELEVATION (WALL)
LEFT ANGLE
RIGHT ANGLE
50
30
300
307
300
-90
90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECIBELS
**************************************************************** SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
**************************************************************** AUTOS 64. 9 -0. 31 0. 0 64. 9
M.TRUCKS 57.4 -0.70 0.0 57.4
H.TRUCKS 48.8 -2.29 0.0 48.B
**************************************************************** TOTAL LEQ WITHOUT A BARRIER (' HARD' PROPAGATION) 65. 7 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION> 65.7 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION> 64.5 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -66 to 67 dE,
EXPECTED CNEL WITH MITIGATION 66 to 67 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 2
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME
ROAD & LOCATION
-Park View West
-Rancho Santa Fe Road (Site 2)
******************************************************** * TRAFFIC FLOW DATA *
********************************************************
HOURLY NUM:BER OF VEHICLES -998
'Y. OF MEDIUM TRUCt<S 2. 9
X OF HEAVY TRUCKS 1.7
SPEED IN MPH 37
ROAD GRADE ( 'Y.) 4
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 50
BARRIER TO RECEIVER DISTANCE 30
ROAD ELEVATION 280
RECEIVER ELEVATION 287
TOP OF :BARRIER ELEVATION (WALL> 280
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS CLEQ) IN DECIBELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 64. 8 -□. 31 O. 0 64. 8
M.TRUCKS 59.0 -0.70 0.0 59.0
H. TRUCr<S 62. 9 -2. 29 0. D 62. 9
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 67.6 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 67.6 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION) 66.4 dB
**************************************************************** ****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -68 to 69 dB
EXPECTED CNEL WITH MITIGATION 68 to 69 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 3
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL>
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME -Park View West
ROAD & LOCATION -Rancho Santa Fe Road (Site 2)
******************************************************** * TRAFFIC FLOW DATA *
********************************************************
HOURLY NUMBER OF VEHICLES -1069
o/. OF MED I UM TRUO,S 5. 4
;. OF HEAVY TRUCKS 1 . 6
SPEED IN MPH 35
ROAD GRADE ( o/.) 4
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 50
BARRIER TO RECEIVER DISTANCE 30
ROAD ELEVATION 280
RECEIVER ELEVATION 287
TOP OF BARRIER ELEVATION (WALL> 280
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECI:e.ELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 64. 3 -0. 31 0. 0 64. 3
M. TRUC~'(S 61. 7 -0. 70 0. 0 61. 7
H.TRUCKS 62.7 -2.29 0.0 62.7
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 67. 8 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 67. 8 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION> 66. 6 dB
**************************************************************** ****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -69 to 70 dB
EXPECTED CNEL WITH MITIGATION 69 to 70 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 4
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME
ROAD & LOCATION
-Park View West
-Rancho Santa Fe Road (Site 2)
******************************************************** * TRAFFIC FLOW DATA *
********************************************************
HOURLY NUMBER OF VEHICLES -1081
% OF MEDIUM TRUCKS 3. 7
% OF HEAVY TRUCKS 1.6
SPEED IN MPH 35
ROAD GRADE ( '½.) 4
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 50
BARRIER TO RECEIVER DISTANCE 30
ROAD ELEVATION 280
RECEIVER ELEVATION 287
TOP OF BARRIER ELEVATION <WALL) 280
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECIBELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 64. 4 -0. 31 O. 0 64. 4
M.TRUCKS 60.1 -0.70 0.0 60.1
H.TRUCKS 62.8 -2.29 0.0 62.8
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 67. 5 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 67. 5 dB
TOTAL LEQ WITHOUT A BARRIER (' SOFT' PROPAGATION) 66. 3 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -68 to 69 dB
EXPECTED CNEL WITH MITIGATION 68 to 69 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 5
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME -Park View West
ROAD & LOCATION -Rancho Santa Fe Road <Site 2)
******************************************************** * TRAFFIC FLOW DATA *
********************************************************
HOURLY NUMBER OF VEHICLES -986
1. OF MEDIUM TRUCKS 3. 6
1. OF HEAVY TRUCKS 1.3
SPEED IN MPH 38
ROAD GRADE ( % ) 4
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 50
BARRIER TO RECEIVER DISTANCE 30
ROAD ELEVATION 280
RECEIVER ELEVATION 287
TOP OF BARRIER ELEVATION (WALL> 280
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECIBELS
****************************************************************
SOURCE LEQ FRESNEL '.BARRIER LEQ
( no barrier) NUMBER ATTENUATION ( ILi it h barrier>
****************************************************************
AUTOS 65.1 -0.31 0.0 65.1
M.TRUCKS 60.1 -0.70 0.0 60.1
H.TRUCKS 61.8 -2.29 0.0 61.8
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 67. 6 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 67. 6 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION) 66. 4 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -68 to 69 dB
EXPECTED CNEL WITH MITIGATION 68 to 69 d:B
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 6
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME
ROAD NAME
-Park View West
-Rancho Santa Fe Road <Lot 17)
********************************************************
* TRAFFIC FLOW DATA *
********************************************************
ADT 44200
'1/. OF MEDIUM TRUCKS 3. 6
% OF HEAVY TRUCKS 1. 3
SPEED IN MPH 38
ROAD GRADE ( % ) 10
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 75
BARRIER TO RECEIVER DISTANCE rs
ROAD ELEVATION 215
RECEIVER ELEVATION 222
TOP OF BARRIER ELEVATION <BERM> 217
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECIBELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 67.5 -0.51 0.0 67.5
M.TRUCKS 62.5 -0.65 0.0 62.5
H. TRUC~~S 66. 2 -1. 08 0. 0 66. 2
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 70. 6 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 70.6 dB
TOTAL LEQ WITHOUT A BARRIER (' SOFT' PROPAGATION) 68. 5 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -71 to 72 dE,
EXPECTED CNEL WITH MITIGATION 71 to 72 dB
****************************************************************
****************************************************************
*
• •
ATTACHMENT
TABLE 7
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME
ROAD NAME
-Park View West
-Ranch □ Santa Fe Road (Lot 17)
TRAFFIC FLOW DATA * ********************************************************
ADT
t. OF MEDIUM TRUCKS
t. OF HEAVY TRUCKS
SPEED IN MPH
ROAD GRADE ('Y.)
44200
3.6
1.3
38
10
******************************************************** * PROJECT GEOMETRY DATA *
******************************************************** SOURCE TO RECEIVER DISTANCE
BARRIER TO RECEIVER DISTANCE
ROAD ELEVATION
RECEIVER ELEVATION
TOP OF BARRIER ELEVATION (WALL>
LEFT ANGLE
RIGHT ANGLE
75
15
215
222
223.5
-90
90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECIBELS
**************************************************************** SOURCE LEQ
(no barrier)
FRESNEL
NUMBER
BARRIER LEQ
ATTENUATION (with barrier}
**************************************************************** AUTOS 67.5 0.34 -7.7 59.7
M.TRUCl-'(8 62.5 0.24 -7.1 55.4
H. TRUC~\S 66. 2 □. 07 -5. 7 60. 5
******************************~********************************* TOTAL LEQ WITHOUT A :MRRIER (' HARD' PROPAGATION) 70. 6 dB
TOTAL LEQ l-JITH A BARRIER ('HARD' PROPAGATION) 63. 8 dB
TOTAL LEQ WITHOUT A BARRIER (' SOFT' PROPAGATION) 68. 5 dB
****************************************************************
**************************************************************** EXPECTED CNEL WITHOUT MITIGATION -71 to 72 dB
EXPECTED CNEL WITH MITIGATION 65 to 66 d:B
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 8
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
-Park View West
REPORT 011-85
PROJECT NAME
ROAD NAME -Rancho Santa Fe Road (Lot 17)
******************************************************** * TRAFFIC FLOW DATA *
******************************************************** ADT
'½ OF MEDIUM TRUCKS
X OF HEAVY TRUCKS
SPEED IN MPH
ROAD GRADE(%)
44200
3.6
1.3
38
10
******************************************************** * PROJECT GEOMETRY DATA *
******************************************************** SOURCE TO RECEIVER DISTANCE
BARRIER TO RECEIVER DISTANCE
ROAD ELEVATION
RECEIVER ELEVATION
TOP OF BARRIER ELEVATION (WALL>
LEFT ANGLE
RIGHT ANGLE
75
15
215
.r:r--:,rJ ........
224
-90
90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECIBELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
**************************************************************** AUTOS
M.TRUCKS
H. TRUCl·{S
67.5
62.5
66.2
0.47
0.35
0.13
-8.4
-7.8
-6.3
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION)
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION)
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION)
59.1
54.7
60.0
70.6 dB
63.2 dB
68.5 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -71 to 72 dB
EXPECTED CNEL WITH MITIGATION 64 to 65 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 9
RESULTS OF TRAFFIC NOISE ANALYSIS
CFHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
-Park View West
REPORT 011-85
PROJECT NAME
ROAD NAME -Rancho Santa Fe Road <Lot 18)
******************************************************** * TRAFFIC FLOW DATA *
******************************************************** ADT
t. OF MEDIUM TRUCKS
% OF HEAVY TRUCKS
SPEED IN MPH
ROAD GRADE (i.)
44200
3.6
1.3
38
10
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************.
SOURCE TO RECEIVER DISTANCE
BARRIER TO RECEIVER DISTANCE
ROAD ELEVATION
RECEIVER ELEVATION
TOP OF BARRIER ELEVATION <BERM)
LEFT ANGLE
RIGHT ANGLE
85
30
224.4
222
224.2
-90
90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECIBELS
**************************************************************** SOURCE LEQ FRESNEL
NUMBER
BARRIER LEQ
(no barrier) ATTENUATION (with barrier)
****************************************************************
AUTOS 66. 9 0. 05 -8. 5 58. 4
M. TRUCKS 61. 9 0. 01 -8. 1 53. 9
H. TRUC~<S 65. 7 -0. 05 -4. 3 61. 4
**************************************************************** TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 70.1 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 63.6 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION) 67.7 dB
****************************************************************
**************************************************************** EXPECTED CNEL WITHOUT MITIGATION -
EXPECTED CNEL WITH MITIGATION
71 to 72 d:B
64 to 65 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 10
RESULTS OF TRAFFIC NOISE ANALYSIS
CFHWA RD 77-108 MODEL>
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME
ROAD NAME
-Park View West
-Rancho Santa Fe Road (Lot 22)
******************************************************** * TRAFFIC FLOW DATA *
********t***********************************************
ADT 44200
% OF MEDIUM TRUCKS 3. 6
X OF HEAVY TRUCKS 1.3
SPEED IN MPH 38
ROAD GRADE ('1/.) 10
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 90
BARRIER TO RECEIVER DISTANCE 35
ROAD ELEVATION 237. 3
RECEIVER ELEVATION 232
TOP OF :BARRIER ELEVATION <BERM) 237.3
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS CLEQ) IN DECI:e.ELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
<no barrier) NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 66.7 0.24 -10.1 56.6
M.TRUCl·{S 61.7 0.12 -9.2 52.5
H.TRUC~<S 65.5 0.00 -8.0 57.4
****************************************************************
TOTAL LEQ WITHOUT A :BARRIER ('HARD' PROPAGATION) 69.8 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION> 60. 7 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION) 67. 3 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -71 to 72 dB
EXPECTED CNEL WITH MITIGATION 62 to 63 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 11
RESULTS OF TRAFFIC NOISE ANALYSIS
CFHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME
ROAD NAME
-Park View West
-Rancho Santa Fe Road (~ot 73)
******************************************************** * TRAFFIC FLOW DATA *
********************************************************
ADT
% OF MEDIUM TRUC~'(S
% OF HEAVY TRUCKS
SPEED IN MPH
ROAD GRADE (;.)
44200
3.6
1.3
38
6
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 115
BARRIER TO RECEIVER DISTANCE 60
ROAD ELEVATION 254. 3
RECEIVER ELEVATION 242
TOP OF BARRIER ELEVATION <BERM) 254.3
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS <LEQ) IN DECIBELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier> NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 65. 6 0. 58 -11. 9 53. 7
M.TRUCKS 60.6 0.36 -10.8 49.8
H. TRUO'(S 63. 0 0. 05 -8. 5 54. 4
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION> 68. 3 de.
TOTAL LEQ WITH A :BARRIER ('HARD' PROPAGATION> 57. 9 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION> 65. 3 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -69 to 70 dB
EXPECTED CNEL WITH MITIGATION 59 to 60 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 12
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME
ROAD NAME
-Park View West
-Ranch □ Santa Fe R□ad (L□t 78)
******************************************************** * TRAFFIC FLOW DATA *
********************************************************
ADT 44200
'1/. OF MEDIUM TRUC~{S 3. 6
'1/. OF HEAVY TRUC~<S 1. 3
SPEED IN MPH 38
ROAD GRADE ( '1/.) 5
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 105
BARRIER TO RECEIVER DISTANCE 50
ROAD ELEVATION 262.7
RECEIVER ELEVATION 254
TOP OF BARRIER ELEVATION <BERM> 262. 7
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECIBELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 66.0 0.38 -10.9 55.1
M. TRUC~<S 61. 0 0. 22 -10. 0 51. 1
H.TRUO-<S 63.4 0.01 -8.1 55.2
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 68. 7 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 58.9 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION) 65. 9 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -69 to 70 d:e,
EXPECTED CNEL WITH MITIGATION 60 to 61 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 13
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME
ROAD NAME
-Park View West
-Rancho Santa Fe Road (Lot 81)
******************************************************** * TRAFFIC FLOW DATA *
********************************************************
ADT 44200
'l. OF MEDIUM TRUCt(S 3. 6
~~ OF HEAVY TRUCKS 1 • 3
SPEED IN MPH 38
ROAD GRADE ( i:.) 4
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 195
:BARRIER TO RECEIVER DISTANCE 135
ROAD ELEVATION 273.3
RECEIVER ELEVATION 260
TOP OF BARRIER ELEVATION (BERM) 273.3
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECIBELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 63. 3 O. 20 -9. 8 53. 5
M.TRUCKS 58.3 0.07 -8.8 49.6
H.TRUCt(S 60.0 -0.02 -4.7 55.3
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 65. 8 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 58. 2 dE,
TOTAL LEQ t,JITHOUT A BARRIER ('SOFT' PROPAGATION) 61. 7 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -67 to 68 dB
EXPECTED CNEL WITH MITIGATION 59 to 60 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 14
RESULTS OF TRAFFIC NOISE ANALYSIS
<FHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
-Park View West
REPORT 011-85
PROJECT NAME
ROAD NAME -Rancho Santa Fe Road <Lot 83)
******************************************************** * TRAFFIC FLOW DATA *
********************************************************
ADT 44200
'l. OF MEDIUM TRUCKS 3.6
'l. OF HEAVY TRUC~(S 1. 3
SPEED IN MPH 38
ROAD GRADE ( 'l.) 4
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE
BARRIER TO RECEIVER DISTANCE
ROAD ELEVATION
RECEIVER ELEVATION
TOP OF BARRIER ELEVATION <BERM)
LEFT ANGLE
RIGHT ANGLE
130
70
276.7
262
276.7
.:.90
90
****************************************************************
HOURLY NOISE LEVELS (LEQ) IN DECI:e,ELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 65.1 0.68 -12.3 52.8
M.TRUCKS 60.1 0.45 -11.3 48.8
H. TRUC~<S 61. 8 0. 09 -8. 9 52. 9
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 67. 6 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 56. 6 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION) 64. 3 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -68 to 69 dB
EXPECTED CNEL WITH MITIGATION 57 to 58 dB
****************************************************************
****************************************************************
• •
ATTACHMENT
TABLE 15
RESULTS OF TRAFFIC NOISE ANALYSIS
CFHWA RD 77-108 MODEL)
CALIFORNIA EMISSION LEVEL
REPORT 011-85
PROJECT NAME
ROAD NAME
-Park View West
-La Costa Avenue (Lot 129)
******************************************************** * TRAFFIC FLOW DATA *
********************************************************
ADT 25800
t. OF MEDIUM TRUCKS 3. 6
X OF HEAVY TRUCKS 1.3
SPEED IN MPH 45
ROAD GRADE ( i.) 2
******************************************************** * PROJECT GEOMETRY DATA *
********************************************************
SOURCE TO RECEIVER DISTANCE 140
BARRIER TO RECEIVER DISTANCE 100
ROAD ELEVATION 280
RECEIVER ELEVATION 251
TOP OF BARRIER ELEVATION CBERM) 280
LEFT ANGLE -90
RIGHT ANGLE 90
****************************************************************
HOURLY NOISE LEVELS <LEQ) IN DECrnELS
****************************************************************
SOURCE LEQ FRESNEL BARRIER LEQ
(no barrier) NUMBER ATTENUATION (with barrier)
****************************************************************
AUTOS 64. 5 L 12 -13. 6 50. 9
M.TRUCKS 58.6 0.71 -12.4 46.2
H.TRUCKS 58.7 0.10 -9.0 49.6
****************************************************************
TOTAL LEQ WITHOUT A BARRIER ('HARD' PROPAGATION) 66. 3 dB
TOTAL LEQ WITH A BARRIER ('HARD' PROPAGATION) 54.1 dB
TOTAL LEQ WITHOUT A BARRIER ('SOFT' PROPAGATION) 62.9 dB
****************************************************************
****************************************************************
EXPECTED CNEL WITHOUT MITIGATION -67 to 68 dB
EXPECTED CNEL WITH MITIGATION 55 to 56 dB
****************************************************************
****************************************************************