HomeMy WebLinkAboutAppendix A Noise Abatement Decision ReportFairview Street Improvements from 9th Street to NADR
16th Street and Bridge Replacement Project
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Noise Abatement Decision Report
Santa Ana, California
Federal Project No. BRLS 5063(184)
June 2019
CALIFORNIA DEPARTMENT OF TRANSPORTATION
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Noise Abatement Decision Report
Fairview Street Improvements from 9th Street to 16th Street
Prepared By:
and Bridge Replacement Project
Santa Ana, California
Federal Project No. BRLS 5063(184)
June 2019
iete Specialist
ME4 200
QA/QC By: Aut� 444�
Amy risher, rincipal
LSA Associates, Inc.
7086 N. Maple, Suite 104
Fresno, California 93720
(559) 490-1210
Lam✓
Approved By:�
Dan Weddell, P.E.
WKE, Inc.
1851 E. First Street, Suite 1400
Santa Ana, California 92705
(714) 953-1020
Date: 6/12/19
Date: 6/12/19
No.COb9834
EXP 1213112019
Date: 6/12/19 ��;\, clvl�-
Concurred By: � _ Date:
Rez Aurasteh, Ph.D., P.E.
Chief, Environmental Engineering Branch
California Department of Transportation
District 12
1750 East 4th Street, Suite 100
Santa Ana, California 92705
(657)328-6138
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Table of Contents
Tableof Contents........................................................................................................................i
Listof Figures..........................................................................................................................
iii
Listof Tables.............................................................................................................................v
Listof Abbreviated Terms......................................................................................................
vii
Chapter1. Introduction....................................................................................................1
1.1. Noise Abatement Assessment Requirements............................................................1
1.2. Purpose of the Noise Abatement Decision Report ....................................................2
1.3. Project Description....................................................................................................3
1.3.1. No Build Alternative....................................................................................3
1.3.2. Build Alternative..........................................................................................4
1.4. Affected Land Uses...................................................................................................9
Chapter 2. Results of the Noise Study Report ...............................................................11
2.1. Noise Impact Locations...........................................................................................11
2.2. Locations for Evaluated Noise Abatement..............................................................18
2.3. Feasible Noise Barriers............................................................................................23
Chapter 3. Preliminary Noise Abatement Decision.......................................................25
3.1. Summary of Key Information..................................................................................25
3.2. Non -Acoustical Factors Relating to Feasibility.......................................................27
3.2.1. Build Alternative........................................................................................27
3.3. Preliminary Recommendation and Decision...........................................................27
Chapter 4. Secondary Effects of Abatement..................................................................29
Chapter5. References....................................................................................................31
Appendix A. Noise Barrier Construction Cost Estimate...................................................33
Fairview Street Improvements from 9th Street to 16th Street i
and Bridge Replacement Project Noise Abatement Decision Report
Table of Contents
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Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
List of Figures
Figure 1-1. Regional Location and Project Area.......................................................................5
Figure 1-2. Proposed Project......................................................................................................7
Figure 2-1. Monitoring and Modeled Receptor Locations......................................................13
Figure 2-2. Modeled Noise Barrier and Receptor Locations...................................................19
Fairview Street Improvements from 9th Street to 16th Street iii
and Bridge Replacement Project Noise Abatement Decision Report
List of
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Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
List of Tables
Table 2.1: Summary of Feasible Noise Barriers from the Noise Study Report .......................24
Table 3.1: Summary of Abatement Key Information for the Build Alternative ......................26
Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
List of Tables
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Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
List of Abbreviated Terms
23 CFR 772 Title 23, Code of Federal Regulations, Part 772
APE
Area of Potential Effect
APN
Assessor's Parcel Number
BMPs
best management practices
Caltrans
California Department of Transportation
CEQA
California Environmental Quality Act
City
City of Santa Ana
dB
decibels
dBA
A -weighted decibels
ED
Environmental Document
EW
Existing Wall
FHWA
Federal Highway Administration
ft
foot/feet
HRER
Historical Resources Evaluation Report
Leq
equivalent continuous sound level
LOS
level(s) of service
LSA
LSA Associates, Inc.
NAC
Noise Abatement Criteria
NADR
Noise Abatement Decision Report
NB
Noise Barrier
NSR
Noise Study Report
PDT
Project Development Team
Protocol
Traffic Noise Analysis Protocol for New Highway Construction,
Reconstruction, and Retrofit Barrier Projects
PS&E
Plans, Specifications, and Estimates
SART
Santa Ana River Trail
TNM
Traffic Noise Model
vplph
vehicles per lane per hour
Fairview Street Improvements from 9th Street to 16th Street vii
and Bridge Replacement Project Noise Abatement Decision Report
List of Abbreviated Terms
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viii Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 1. Introduction
The Noise Abatement Decision Report (NADR) presents the preliminary noise
abatement decision as defined in the California Department of Transportation
(Caltrans) Traffic Noise Analysis Protocol for New Highway Construction,
Reconstruction, and Retrofit Barrier Projects (Protocol). This report has been
approved by a California licensed professional civil engineer. The Noise Study
Report (NSR) for the Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project, was approved in January 2019 and is hereby
incorporated by reference.
1.1. Noise Abatement Assessment Requirements
Title 23, Code of Federal Regulations, Part 772 (23 CFR 772) of the Federal Highway
Administration (FHWA) standards and the Protocol require that noise abatement be
considered for projects that are predicted to result in traffic noise impacts. A traffic
noise impact is considered to occur when future predicted design -year noise levels
with the project "approach or exceed" the Noise Abatement Criteria (NAC) defined in
23 CFR 772 or when the predicted design -year noise levels with the project
substantially exceed existing noise levels. A predicted design -year noise level is
considered to "approach" the NAC when it is within 1 decibel (dB) of the NAC. A
substantial increase is defined as being 12 A -weighted decibels (dBA) or more over
the corresponding existing noise level.
The FHWA standards (23 CFR 772) require that noise abatement measures that are
reasonable and feasible and are likely to be incorporated into the project be identified
before completion of the environmental review process.
The Protocol establishes a process for assessing the reasonableness and feasibility of
noise abatement. A preliminary noise abatement decision is made based on the
feasibility of evaluated abatement and the preliminary reasonableness determination.
Noise abatement is considered to be acoustically feasible if it provides a noise
reduction of 5 dBA or more at receptors subject to noise impacts. Other non -
acoustical factors relating to geometric standards (e.g., sight distances), safety,
maintenance, and security can also affect feasibility.
For a noise barrier to be considered reasonable, the noise level reduction design goal
of 7 dBA must be achieved at one or more benefited receptors. Once it is determined
Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
ter 1. Introduction
that one or more receptors satisfy the minimum noise reduction required, the
preliminary reasonableness determination is made by calculating an allowance that is
considered to be a reasonable amount of money, per benefited residence, to spend on
abatement. This reasonable allowance is then compared to the engineer's cost
estimate for the abatement. If the engineer's cost estimate is less than the allowance,
the preliminary determination is that the abatement is reasonable. If the cost estimate
is higher than the allowance, the preliminary determination is that abatement is not
reasonable.
The NADR presents the preliminary noise abatement decision based on acoustical
and non -acoustical feasibility factors and the relationship between noise abatement
allowances and the engineer's cost estimate. The NADR does not present the final
decision regarding noise abatement; rather, it presents key information on abatement
to be considered throughout the environmental review process that is based on the
best available information at the time. The final overall reasonableness decision will
take this information into account, along with other reasonableness factors identified
during the environmental review process. These factors may include:
• The noise reduction design goal;
• The cost of noise abatement; and
• The viewpoints of the benefited receptors (including property owners and
residents of the benefited receptors).
The preliminary noise abatement decision will become the final noise abatement
decision unless compelling information received during the environmental review
process indicates that it should be changed.
1.2. Purpose of the Noise Abatement Decision Report
The purpose of the NADR is to:
• Summarize the conclusions of the NSR relating to acoustical feasibility and the
reasonable allowances for abatement evaluated;
• Present the engineer's cost estimate for evaluated abatement;
• Present the engineer's evaluation of non -acoustical feasibility issues;
• Present the preliminary noise abatement decision; and
• Present preliminary information on the secondary effects of abatement (impacts
on cultural resources, scenic views, hazardous materials, and biological resources,
etc.).
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2 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
1. Introduction
The NADR does not address noise barriers or other noise -reducing treatments
required as mitigation for significant adverse environmental effects identified under
the California Environmental Quality Act (CEQA).
1.3. Project Description
The City of Santa Ana (City), in conjunction with Caltrans District 12 proposes
widening Fairview Street between 9th Street and 16th Street, including replacing the
Fairview Street bridge crossing over the Santa Ana River (proposed project) in Santa
Ana, California. The purpose of the project is to reduce congestion and improve
pedestrian and bicyclist safety on Fairview Street between 9th Street and 16th Street,
consistent with the Orange County Master Plan of Arterial Highways and the City's
General Plan Circulation Element.
South of 9th Street, Fairview Street provides three lanes in each direction that are
reduced to two lanes in each direction north of 9th Street, across the existing four -
lane bridge, to 16th Street. The Fairview Street segment between 9th Street and
16th Street is the only constraint for Fairview Street to be built out to its planned
width of six lanes. This condition causes a traffic "bottleneck" during peak hours. In
addition, there are no sidewalks, bikeways, or lighting on the existing bridge.
Pedestrians and bicyclists currently use the roadway shoulder to cross the bridge.
Two alternatives, including the No Build Alternative, were developed to meet the
identified purpose and need of the proposed project while avoiding or minimizing
environmental impacts. The project alternatives are described below.
1.3.1. No Build Alternative
The No Build Alternative assumes that no improvements are made to Fairview Street.
The No Build Alternative would maintain the existing conditions and provides a
baseline for comparison of the impacts under the Build Alternative. Under the No
Build Alternative, the performance of the roadway would continue to deteriorate with
the forecasted increase in traffic on the bridge and the non-standard shoulders would
remain with no sidewalk.
Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
ter 1. Introduction
1.3.2. Build Alternative
The proposed project includes widening Fairview Street between 9th Street and
16th Street, including replacing the Fairview Street bridge crossing over the Santa
Ana River. The proposed project would widen Fairview Street from two lanes in each
direction to three lanes in each direction, as shown on Figures 1-1 and 1-2. The
Fairview Street bridge would be replaced with a new six -lane bridge (three lanes in
each direction), including a complete bridge deck with barrier rails, sidewalks,
bicycle lanes, a raised median, and lighting.
The proposed bridge would be expanded from approximately 52 feet (ft) to 100 ft in
width, and would have the same roadway profile as the existing bridge. The eight pier
walls that support the existing bridge would be removed, and four new pier walls
would be constructed to support the new bridge.
The proposed project would partially acquire right-of-way take from three parcels
(two commercial parcels [Assessor's Parcel Numbers (APNs) 405-213-02 and 405-
213-01] and one single-family residence [APN 405-213-14]), as shown on Figure 1-2.
Although not known at this time, there is the potential for one full take at the single-
family residence (APN 405-213-14) if the property owner is concerned about the loss
of a portion of the side yard; this will be determined during final design in
consultation with the property owner.
An existing 12-inch-diameter water line and a bank of 12 phone conduits are
suspended under the deck of the existing bridge and span the Santa Ana River. These
utilities would need to be temporarily relocated during construction, after which they
would be permanently relocated to the new bridge.
Water quality best management practices (BMPs) would be included to treat
stormwater runoff such as a vegetated swale adjacent to Fairview Street in the
Fairview Triangle rest area.
Fairview Street would remain open during the construction period with two
nouhbound lanes and one northbound lane, with lanes shifted to one side of the
bridge while the other side is replaced. Therefore, no detours would be required for
vehicles traveling along Fairview Street. Access to properties would be maintained.
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Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
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LEGEND FIGURE 1-1
Project Location
N Fairview Street Improvements
from 9th Street to 16th Street and
0 1000 2000 Bridge Replacement Project
FEET Regional Location and Project Area
SOURCE: USGS 7.5' Quad - Anaheim (1981) & Newport Beach (1981) Federal Project No.: BRLS 5063(184)
I:\WKE1702\GIS\Noise\NADR_ProjectLocation.mxd (1/14/2019)
1. Introduction
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Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
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SOURCE: WKE (3/2018); Google (2016)
FIGURE 1-2
Fairview Street Improvements
from 9th Street to 16th
Street and Bridge Replacement Project
Proposed Project
Federal Project No.: BRLS 5063(184)
I:\WKE1702\GIS\NADR_ProposedProject.mxd (1/14/2019)
1. Introduction
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Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
1. Introduction
During construction, pedestrians and bikes would be detoured away from the
Fairview Street bridge to the 17th Street bridge to cross the Santa Ana River by way
of the Santa Ana River Trail (SART) between the hours of 9:00 a.m. and 7:00 p.m.
while the gates to the SART are open and unlocked. After hours, pedestrians and
bicyclists who wish to cross the Santa Ana River would be detoured to adjacent city
streets such as King Street.
Construction of the proposed Project would require temporary closure of a portion of
the SART for the demolition and placement of the bridge superstructure. The SART
includes a Class I bike path on the eastern side and a regional riding and hiking trail
on the western side. The portion of the SART affected by project construction would
need to be temporarily closed four times for approximately 8 hours each during two
summer periods for the placement of precast concrete girders. During these periods,
SART users would be detoured and signage would be provided to display the dates of
the closures and identify the detour routes. Work on the north and south sides of the
bridge would be completed during separate periods so that SART users can be
detoured to the trail on the opposite side of the Santa Ana River at 5th Street. There
are gates and ramps located on both sides of the SART at 5th Street that provide
access to bicyclists and pedestrians for these detours. Details regarding the detours
are being coordinated with Orange County Parks. Other short-term closures of up to
15 minutes would be allowed with flagmen.
A temporary detour within the river bed may be required as a contingency. This
would involve construction of dirt and gravel ramps with asphalt topping to and from
the SART and the river bed.
Construction vehicles would access the Santa Ana River from the gate and ramp at
the County of Orange access road at the northwest corner of the bridge, and would
use the existing concrete access ramp into the river approximately 250 ft west of the
project area. All access roads to the SART that are utilized by construction vehicles
or for detour routes would be reconstructed and restored to pre -construction
conditions or better prior to project completion.
1.4. Affected Land Uses
Developed and undeveloped land uses in the project vicinity were identified through
land use maps, aerial photography, and site inspection. Receptors were identified in
each land use category. Existing land uses in the project area include single-family
and multifamily residences, a medical office, a trailside rest area (Fairview Triangle),
Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
ter 1. Introduction
the Santa Ana River Trail (SART), vacant land, and commercial and light industrial
uses. Existing land uses in the project area and surrounding vicinity are described in
further detail as follows:
• East of Fairview Street and South of the Santa Ana River (Receptors R-2 through
R-7, R-11, R-12, R-13, R-17, R-18, R-24 through R-30, R-37 through R-45, R-48
through R-50, and R-53 through R-67): Land uses in this area include single-
family and multifamily residences, commercial uses, and vacant land. Land uses
in this area range from 3 ft higher in elevation than Fairview Street to 7 ft lower in
elevation than Fairview Street. Currently, 4 ft to 13.5 ft high existing walls along
the private property lines shield the single-family residences.
• West of Fairview Street and South of the Santa Ana River (Receptors R-1,
R-8 through R-10, R-14 through R-16, R-19 through R-23, R-31 through
R-36, R-46, R-47, R-51, and R-52): Land uses in this area include single-family
and multifamily residences, a medical office, Fairview Triangle, SART, and
office uses. Land uses in this area range from 2 ft higher in elevation than
Fairview Street to 5 ft lower in elevation than Fairview Street. Currently, 2.7 ft to
9.3 ft high existing walls along the private property lines shield the single-family
and multifamily residences.
• East of Fairview Street and North of the Santa Ana River (Receptors R-85
through R-92): Land uses in this area include single-family residences and
commercial and light industrial uses. Land uses in this area range from 2 ft higher
in elevation than Fairview Street to approximately the same elevation as Fairview
Street. Currently, a 6.7 ft high existing wall along the private property line shields
the commercial use.
• West of Fairview Street and North of the Santa Ana River (Receptors R-68
through R-84): Land uses in this area include single-family residences, vacant
land, and commercial and light industrial uses. Land uses in this area range from
2 ft higher in elevation than Fairview Street to 9 ft lower in elevation than
Fairview Street. Currently, 6.7 ft to 10.7 ft high existing walls along the private
property lines shield the single-family residences.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
10 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 2. Results of the Noise Study
Report
The NSR for this project was approved in January 2019.
2.1. Noise Impact Locations
Potential long-term noise impacts associated with project operations are solely from
traffic noise. Traffic noise was evaluated for the worst -case traffic condition. Using
coordinates obtained from the topographic maps, 92 receptor locations associated
with existing single- and multifamily residences, a medical office, Fairview Triangle,
SART, vacant land, and commercial and light industrial uses were identified as
receptors within the study area. Figure 2-1 shows these receptor locations.
Future traffic noise levels at all 92 receptor locations were determined using either the
worst -case traffic operations (prior to speed degradation) or the 2040 a.m. peak -hour
traffic volumes, whichever were lower. The worst -case traffic condition is assumed to
be level of service (LOS) C and is generally loudest when vehicles on a given
roadway travel at free -flowing traffic conditions. Accordingly, the worst -case traffic
volume assumptions are based on the maximum number of vehicles that can typically
travel in a given lane while still resulting in free -flowing traffic conditions. The
worst -case traffic condition is assumed to be 750 vehicles per lane per hour (vplph)
on Fairview Street and other local roadways. The a.m. peak -hour traffic volume was
selected over the p.m. peak -hour traffic volume because the worst -hour noise levels
based on the long-term (24-hour) noise level measurements occur during the a.m.
hour. The a.m. and p.m. peak -hour traffic volumes were obtained from the Traffic
Impact Analysis (LSA 2018).
The modeled future noise levels with the project were compared to the modeled
existing noise levels (after calibration) from Traffic Noise Model (TNM) 2.5 to
determine whether a substantial noise increase would occur. The modeled future
noise levels were also compared to the NAC to determine whether a traffic noise
impact would occur.
Fairview Street Improvements from 9th Street to 16th Street 11
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 2. Results of the Noise Study Report
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12 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
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-0-40- O Modeled Receptors Existing Walls Fairview Street Improvements
0 75 150 ® proposed Right of Way Acquisition from 9t1 Street to 16th Street and Bridge Replacement Project
FEET Monitoring and Modeled Receptor Locations
SOURCE: Google Aerial (12/2017); WKE (2017) Federal Project No.: BRLS 5063(184)
I:\WKE1702\GIS\NADR_MonitoringModeledReceptorLocations.mxd (6/4/2019)
Chapter 2. Results of the Noise Study Report
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14 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
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Sheet 2 of 2
♦ Short -Term Monitoring Locations Proposed Improvements
■ Long -Term Monitoring Locations Existing Right of Way
z�1 O Modeled Receptors Existing Walls Fairview Street Improvements
0 75 150 ® proposed Right of Way Acquisition from 9th Street to 16th Street and Bridge Replacement Project
FEET Monitoring and Modeled Receptor Locations
SOURCE: Google Aerial (12/2017); WKE (2017) Federal Project No.: BRLS 5063(184)
I:\WKE1702\GIS\NADR_MonitoringModeledReceptorLocations.mxd (6/4/2019)
Chapter 2. Results of the Noise Study Report
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16 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 2 Results of the Noise Study Report
........................................ .................. ............
Of the 92 modeled receptors, 9 receptors under the Future Build condition would
approach or exceed the NAC. No receptor would experience a substantial noise
increase of 12 dBA or more over its corresponding modeled existing noise level
under any scenario.
The receptor locations listed below would be or would continue to be exposed to
noise levels that either approach or exceed the NAC under Future Build conditions:
• Receptor R-5: This receptor location represents an existing single-family
residence on the northbound side of Fairview Street between Civic Center Drive
and West 9th Street. Currently, a 4.7 ft high existing wall (Existing Wall [EW]
No. 1) shields the residence. One noise barrier (NB No. 1) was modeled along the
private property line on the northbound side of Fairview Street to shield this
residence.
• Receptor R-8: This receptor location represents an existing single-family
residence on the southbound side of Fairview Street between Civic Center Drive
and West 9th Street. Currently, a 2.7 ft to 6 ft high existing wall (EW No. 2)
shields this residence. One noise barrier (NB No. 2) was modeled along the
private property line on the southbound side of Fairview Street to shield this
residence.
• Receptor R-14: This receptor location represents an existing single-family
residence on the southbound side of Fairview Street between West 9th Street and
West 12th Street. Currently, a 5.3 ft high existing wall (EW No. 4) shields this
residence. One noise barrier (NB No. 3) was modeled along the private property
line on the southbound side of Fairview Street to shield this residence.
• Receptor R-23: This receptor location represents existing multifamily residences
on the southbound side of Fairview Street between West 9th Street and West 12th
Street. Existing wood fences along the private property line would not provide
effective noise attenuation at these residences. One noise barrier (NB No. 4) was
modeled along the private property line on the southbound side of Fairview Street
to shield these residences.
• Receptors R-24, R-25, and R-40: These receptor locations represent existing
single-family residences on the northbound side of Fairview Street between
West 9th Street and West 12th Street. Currently, a 4 ft to 6 ft high wall
(EW No. 5) shields these residences. One noise barrier (NB No. 5) was modeled
along the private property line on the northbound side of Fairview Street to shield
these residences.
Fairview Street Improvements from 9th Street to 16th Street 17
and Bridge Replacement Project Noise Abatement Decision Report
ter 2. Results of the Noise
• Receptor R-46: This receptor location represents an existing single-family
residence on the southbound side of Fairview Street between West 12th Street and
the Santa Ana River. Currently, a 5.7 ft high existing wall (EW No. 9) shields this
residence. One noise barrier (NB No. 6) was modeled along the private property
line on the southbound side of Fairview Street to shield this residence.
• Receptor R-51: This receptor location represents Fairview Triangle on the
southbound side of Fairview Street between West 12th Street and the Santa Ana
River. Currently, no wall shields Fairview Triangle. Because there is a driveway
and pedestrian access onto Fairview Street, it is not feasible to abate traffic noise
from Fairview Street with noise barriers.
2.2. Locations for Evaluated Noise Abatement
Noise abatement measures such as noise barriers were considered in order to shield
receptors within the study area that would become or would continue to be exposed to
traffic noise levels approaching or exceeding the NAC. Noise barriers were analyzed
for each of these receptor locations. Depending on the location of the potential barrier
and existing barrier height, noise barrier heights from 6 to 16 ft were analyzed at 2 ft
increments. The location of the modeled noise barrier is shown on Figure 2-2.
The following noise barriers were analyzed to shield receptor locations that would be
exposed to traffic noise levels approaching or exceeding the NAC for the Future
Build conditions:
• NB No. 1: A 169 ft long barrier along the right-of-way and private property line
on the northbound side of Fairview Street between Civic Center Drive and 9th
Street was analyzed to shield Receptor R-5.
• NB No. 2: A 129 ft long barrier along the right-of-way and private property line
on the southbound side of Fairview Street between Civic Center Drive and 9th
Street was analyzed to shield Receptor R-8.
• NB No. 3: A 113 ft long barrier along the right-of-way and private property line
on the southbound side of Fairview Street between West 9th Street and West 12th
Street was analyzed to shield Receptor R-14.
• NB No. 4: A 171 ft long barrier along the right-of-way and private property line
on the southbound side of Fairview Street between West 9th Street and West 12th
Street was analyzed to shield Receptor R-23.
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
18 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
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0 75 150 Modeled Noise Barriers from 9th Street to 16th Street and Bridge Replacement Project
FEET Modeled Noise Barrier and Receptor Locations
SOURCE: Google Aerial (12/2017); WKE (2017) Federal Project No.: BRLS 5063(184)
I:\WKE1702\GIS\NADR_ModeledNoiseBarriers.mxd (6/4/2019)
Chapter 2. Results of the Noise Study Report
This page intentionally left blank
20 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
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0 75 150 Modeled Noise Barriers from 9th Street to 16th Street and Bridge Replacement Project
FEET Modeled Noise Barrier and Receptor Locations
SOURCE: Google Aerial (12/2017); WKE (2017) Federal Project No.: BRLS 5063(184)
I:\WKE1702\GIS\NADR_ModeledNoiseBarriers.mxd (6/4/2019)
Chapter 2. Results of the Noise Study Report
This page intentionally left blank
22 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 2 Results of the Noise Study Report
.................. ...................
• NB No. 5: A 705 ft long barrier along the right-of-way on the northbound side of
Fairview Street between West 9th Street and West 12th Street was analyzed to
shield Receptors R-24, R-25, and R-40.
• NB No. 6: A 184 ft long barrier along the right-of-way and private property line
on the southbound side of Fairview Street between West 12th Street and the Santa
Ana River was analyzed to shield Receptor R-46.
2.3. Feasible Noise Barriers
Section 3 of the Protocol states that a minimum noise reduction of 5 dBA must be
achieved at the impacted receptors in order for the proposed noise abatement measure
to be considered feasible. Greater noise reductions are encouraged if they can be
reasonably achieved. Feasibility may also be restricted by the following factors:
(1) topography, (2) access requirement for driveways, (3) presence of local cross -
streets, (4) underground utilities, (5) other noise sources in the area, and (6) safety
considerations.
Table 2.1 summarizes the feasibility of the modeled noise barriers and lists the noise
barrier heights, approximate lengths, the noise attenuation, the number of benefited
units/receptors, the total reasonable allowance, beginning and ending station number,
and the beginning and ending top of wall elevation under the Future Build conditions.
Of the six modeled noise barriers evaluated for the Future Build conditions, all noise
barriers were determined to be feasible.
Fairview Street Improvements from 9th Street to 16th Street 23
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 2. Results of the Noise Study Report
Table 2.1: Summary of Feasible Noise Barriers from the Noise Study Report
Noise Barrier
No.
Height (ft)
Approximate
Length
(ft)
Noise
Attenuation
(dBA)
Number of
Benefited
Receptors/Units'
Total Reasonable
z
Allowance
Noise Barrier
Location
Noise Barrier
Station Number
Top of Wall Elevation (ft)
Begin
End
Begin
End
1
8
169
5
1
$95,000
ROW/PL
36+55
37+31
96.97
96.35
10
169
7
1
$95,000
98.97
98.35
12
169
8
1
$95,000
100.97
100.35
14
169
9
1
$95,000
102.97
102.35
16
169
10
1
$95,000
104.97
104.35
2
8
129
6
1
$95,000
ROW/PL
36+30
37+07
96.46
96.00
10
129
8
1
$95,000
98.46
98.00
12
129
9
1
$95,000
100.46
100.00
14
129
10
1
$95,000
102.46
102.00
16
129
11
1
$95,000
104.46
104.00
3
8
113
6
1
$95,000
ROW/PL
38+70
39+22
96.74
98.00
161
113
7
1
$95,000
98.74
100.00
12
113
7
1
$95,000
100.74
102.00
14
113
8
1
$95,000
102.74
104.00
16
113
8
1
$95,000
104.74
106.00
4
6
171
7
2
$190,000
ROW/PL
43+45
45+15
96.23
96.00
8
171
10
2
$190,000
98.23
98.00
10
171
12
2
$190,000
100.23
100.00
12
171
14
2
$190,000
102.23
102.00
14
171
15
2
$190,000
104.23
104.00
16
171
16
2
$190,000
106.23
106.00
5
6
705
6
2
$190,000
ROW
40+45
42+14
100.25
95.00
8
705
9
3
$285,000
102.25
97.00
10
705
11
3
$285,000
104.25
99.00
12
705
13
5
$475,000
106.25
101.00
14
705
14
7
$665,000
108.25
103.00
16
705
16
7
$665,000
110.25
105.00
6
10
184
7
1
$95,000
ROW/PL
47+16
48+57
103.45
101.01
12
184
8
1
$95,000
105.45
103.01
14
184
9
1
$95,000
107.45
105.01
16
184
10
1
$95,000
109.45
107.01
Source: Compiled by LSA Associates, Inc. (2019).
' Number of receptors/units that are attenuated by 5 dBA or more by the modeled barrier.
2 Calculated by multiplying the number of benefited receptors by $95,000 (the dollar amount per benefited receptor/unit).
3 Denotes the minimum wall height required to break the line -of -sight between the receptor and a truck exhaust stack.
dBA = A -weighted decibels PL = property line
ft = foot/feet ROW = right-of-way
24 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 3. Preliminary Noise Abatement
Decision
3.1. Summary of Key Information
Utilizing the information in Chapter 2, barriers considered to be feasible are analyzed
to determine their reasonableness. As stated in Section 5.4 of the NSR, the overall
reasonableness of noise abatement is determined by considering factors such as the
noise reduction design goal and the construction cost of the barrier. For a noise
barrier to be considered reasonable, the noise level reduction design goal of 7 dBA
must be achieved at one or more of the benefited receptors. For any noise barrier to
be considered reasonable from a cost perspective, the estimated construction cost of
the noise barrier would be equal to or less than the total cost allowance calculated for
the barrier. The total reasonable allowance was determined based on the number of
benefited receptors multiplied by the reasonable allowance per residence. The
estimated noise barrier construction costs for each barrier were developed by WKE,
Inc. in December 2018 and are shown in Table 3.1 as well as in Appendix A. If the
estimated noise barrier construction cost exceeds the total reasonable allowance, the
noise barrier is determined to be not reasonable. However, if the estimated noise
barrier construction cost is within the total reasonable allowance, the noise barrier is
determined to be reasonable.
A summary of abatement information in Table 3.1 lists all the feasible noise barriers
under the Future Build conditions, along with their locations, heights, approximate
lengths, the noise attenuation levels, the number of benefited units/receptors, the total
reasonable allowance per barrier, the estimated construction costs, and whether the
barriers are reasonable. As shown in Table 3.1, NB Nos. 2 through 5 were determined
to be reasonable and NB Nos. 1 and 6 were determined to be not reasonable because
the estimated construction cost exceeded the total reasonable allowance. It should be
noted that NB Nos. 2, 3 (at 12 ft and 14 ft high), 4, and 5 require the property owner
to donate their right-of-way (permanent and temporary easement) in order to achieve
reasonableness.
Fairview Street Improvements from 9th Street to 16th Street 25
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 3. Preliminary Noise Abatement Decision
Table 3.1: Summary of Abatement Key Information for the Build Alternative
Noise
Barrier
No.
Noise
Barrier
Location
Height
(ft)
Approximate
Length (ft)
Noise
Attenuation
Level (dBA)
Number of
Benefited
,
Receptors/Units
Total
Reasonable
2
Allowance
Estimated
Construction
Cost (Without
ROW Donation'
Reasonable
?
Estimated
Construction
Cost (With ROW
Donation)'
Reasonable
?
8
169
5
1
$95,000
No
-
No
10
169
7
1
$95,000
$225,898
No
$207,758
No
1
ROW/PL
12
169
8
1
$95,000
$242,676
No
$224,536
No
14
169
9
1
$95,000
$261,270
No
$243,130
No
16
169
10
1
$95,000
$275,138
No
$256,998
No
8
129
6
1
$95,000
No
-
No
10
129
8
1
$95,000
$103,251
No
$86,701
Yes
2
ROW/PL
12
129
9
1
$95,000
$116,218
No
$99,668
No
14
129
10
1
$95,000
$129,533
No
$112,983
No
16
129
11
1
$95,000
$140,126
No
$123,576
No
8
113
6
1
$95,000
--
No
No
10
113
7
1
$95,000
$86,910
Yes
$69,880
Yes
3
ROW/PL
12
113
7
1
$95,000
$98,299
No
$81,269
Yes
14
113
8
1
$95,000
$110,192
No
$93,162
Yes
16
113
8
1
$95,000
$119,492
No
$102,462
No
6
171
7
2
$190,000
$208,301
No
$184,391
Yes
8
171
10
2
$190,000
$223,396
No
$199,486
No
10
171
12
2
$190,000
$237,517
No
$213,607
No
4
ROW/PL
12
171
14
2
$190,000
$254,459
No
$230,549
No
14
171
15
2
$190,000
$273,220
No
$249,310
No
16
171
16
2
$190,000
$289,097
No
$265,187
No
6
705
6
2
$190,000
No
-
No
8
705
9
3
$285,000
$461,186
No
$412,536
No
10
705
11
3
$285,000
$520,938
No
$472,288
No
5
ROW
12
705
13
5
$475,000
$593,082
No
$544,432
No
14
705
14
7
$665,000
$669,344
No
$620,694
Yes
16
705
16
7
$665,000
$736,731
No
$688,081
No
10
184
7
1
$95,000
$130,841
No
$119,941
No
12
184
8
1
$95,000
$149,114
No
$138,214
No
6
ROW/PL
14
184
9
1
$95,000
$169,047
No
$158,147
No
16
184
10
1
$95,000
$185,990
No
$175,090
No
Source: Compiled by LSA Associates, Inc. (2019).
Number of receptors/units that are attenuated by 5 dBA or more by the modeled barrier.
2 Calculated by multiplying the number of benefited receptors by $95,000 (the dollar amount per benefited receptor/unit).
3 Construction cost estimate provided by WKE, Inc. (2018).
4 Shaded area represents barrier heights that have been determined to be not reasonable because the barrier would not reduce noise levels by 7 dBA or more.
5 Denotes the minimum wall height required to break the line of sight between the receptor and a truck exhaust stack.
dBA = A -weighted decibels ft = foot/feet ROW = right-of-way
26 Fairview Street Improvements from 9th Street to 16th Street and Bridge Replacement Project Noise Abatement Decision Report
Chapter 3. Preliminary Noise Abatement Decision
........................................................................................................
3.2. Non -Acoustical Factors Relating to Feasibility
Nonacoustical factors relating to feasibility that must be considered during the
construction of noise barriers include: geometric standards, safety, maintenance,
security, drainage, geotechnical considerations, and utility relocations.
3.2.1. Build Alternative
The nonacoustical factors relating to the feasibility of NB Nos. 2 through 5 are:
• Geometric Standards: NB Nos. 2 through 5 would not affect the geometric
standards of adjacent roadways.
• Safety: NB Nos. 2 through 5 would not affect sight distance for vehicular or
pedestrian traffic.
• Maintenance: Temporary construction easements would be required for NB Nos.
2 through 5. The property owner would be responsible for maintaining the private
side of the barrier while the City would be responsible for maintaining the public
side of the barrier.
• Security: NB Nos. 2 through 5 would be in the same alignment as an existing
wall and would not change the security conditions of the site.
• Drainage: NB Nos. 2 through 5 would not affect the existing and proposed
drainage system.
• Geotechnical Considerations: NB Nos. 2 through 5 would be constructed at a
similar grade to the existing condition.
• Utility Relocations: Construction of NB No. 2 would not have the potential to
interfere with existing utilities. However, the construction of NB Nos. 3, 4, and 5
have the potential to interfere with existing utilities because there are overhead
electrical lines in the area. Installation of piles during the construction of NB Nos.
3, 4, and 5 may require temporary bypass power lines to be constructed. Although
utility relocations are not anticipated, further investigation would be required
during the Plans, Specifications, and Estimates (PS&E) phase.
3.3. Preliminary Recommendation and Decision
The preliminary noise abatement decision presented in this report is based on
preliminary project alignments and profiles, which may be subject to change. As
such, the physical characteristics of noise abatement described herein may also be
subject to change. If pertinent parameters change substantially during the final project
design, the preliminary noise abatement decision may be changed or eliminated from
the final project design. A final decision to construct noise abatement will be made by
Fairview Street Improvements from 9th Street to 16th Street 27
and Bridge Replacement Project Noise Abatement Decision Report
ter 3. Preliminary Noise Abatement Decision
the Project Development Team (PDT) upon completion of the project design and
public input.
The property owners and non -owner occupants will be sent a noise barrier survey
letter during the public review period to request each owner's or occupant's opinion
on whether or not they would prefer a noise barrier and what height they would prefer
the barrier to be based on the range of feasible and reasonable heights listed in
Table 3.1.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
28 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 4. Secondary Effects of
Abatement
The secondary effects of noise abatement were considered as part of this NADR. The
proposed project includes avoidance, minimization, and/or mitigation measures that
lessen potential environmental effects. Noise abatement is a part of the overall project
footprint, and most secondary effects would be addressed by these measures. NB
Nos. 2 through 5 are feasible and reasonable and do not have any secondary effects
that require additional project features or avoidance, minimization, and/or mitigation
measures.
Fairview Street Improvements from 9th Street to 16th Street 29
and Bridge Replacement Project Noise Abatement Decision Report
Effects of Abatement
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30 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
Chapter 5. References
California Department of Transportation (Caltrans). 2011. Traffic Noise Analysis
Protocol for New Highway Construction, Reconstruction, and Retrofit Barrier
Projects. May. Website: http://www.dot.ca.gov/hq/env/noise/pub/
ca tnap_ nay20l I.pdf (accessed May 2019).
LSA Associates, Inc. 2019. Noise Study Report. January.
.. 2018. Fairview Street Improvements from 9th Street to 16th Street and
Bridge Replacement Project Traffic Impact Analysis. June.
WKE, Inc. 2018. Noise Barrier Construction Cost Estimate. December.
Fairview Street Improvements from 9th Street to 16th Street 31
and Bridge Replacement Project Noise Abatement Decision Report
5. References
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32 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
Appendix A Noise Barrier Construction Cost Estimate
.................................................................................................................
Appendix A. Noise Barrier Construction
Cost Estimate
....................................................................................................................................................................................................................... .
Fairview Street Improvements from 9th Street to 16th Street 33
and Bridge Replacement Project Noise Abatement Decision Report
A Noise Barrier Construction Cost Estimate
This page intentionally left blank
34 Fairview Street Improvements from 9th Street to 16th Street
and Bridge Replacement Project Noise Abatement Decision Report
Fairview Street Improvements from 9th Street to 16th Street and Bridge Replacement Project
Table
A-1.
Noise Barrier Construction
Cost Estimate
Noise Barrier
No.
Noise Barrier
Location
Height (ft)
Approximate
Length (ft)
Noise
Attenuation
Level (dBA)
Number oBenefited
Units/Receptors
Total
Reasonable
Allowance
Cost of
Demolition
Cost of Sound
Wall
Cost of
Retaining Wall
Misc
Construction
Costs'
Job Site
Management
Traffic Control
Cost
Utility
34
Relocation ,
Landscaping for
Graffitti
Abatement Cost
(Arch %5)
Total ROW Costs
(TCE)
ROW Support
Costs
Mobilization
(10 %)
Contingency
(10 %)
Estimated
Construction
Cost (Without
ROW Donation)
Reasonable?
Estimatedf
Construction Cost
(With ROW Donation)
Reasonable?
8
169
5
1
$95,000
-
-
-
-
-
-
-
No
10
169
7
1
$95,000
$ 8,399
$ 77,818
$ -
$ 5,000
$ 75,000
$ 3,891
$ 18,140
$ 18,825
$ 18,825
$ 225,898
No
$ 207,758
No
1
ROW/PL
12
169
8
1
$95,000
$ 8,399
$ 91,134
$ -
$ 5,000
$ 75,000
$ 4,557
$ 18,140
$ 20,223
$ 20,223
$ 242,676
No
$ 224,536
No
14
169
9
1
$95,000
$ 8,399
$ 105,891
$ -
$ 5,000
$ 75,000
$ 5,295
$ 18,140
$ 21,773
$ 21,773
$ 261,270
No
$ 243,130
No
16
169
10
1
$95,000
$ 8,399
$ 116,898
$ -
$ 5,000
$ 75,000
$ 5,845
$ 18,140
$ 22,928
$ 22,928
$ 275,138
No
$ 256,998
No
8
129
6
1
$95,000
-
-
-
-
-
-
-
-
-
-
-
No
10
129
8
1
$95,000
$ 6,411
$ 60,078
1 $
1 $ 3,004
$ 16,550
1 $ 8,604
1 $ 8,604
1 $ 103,251
No
$ 86,701
Yes
2
ROW/PL
12
129
9
1
$95,000
$ 6,411
$ 70,369
$ -
$ 3,518
$ 16,550
$ 9,685
$ 9,685
$ 116,218
No
$ 99,668
No
14
129
10
1
$95,000
j $ 6,411
$ 80,936
$ -
$ 4,047
$ 16,550
$ 10,794
$ 10,794
$ 129,533
No
$ 112,983
No
16
8
10
129
113
113
11
6
7
1
1
1
$95,000
$95,000
$95,000
$ 6,411
-
$ -
$ 89,343
$ 52,757
$ -
$
-
-
$ 4,467
$ 2,638
$ 16,550
$ 17,030
$ 11,677
$ 7,242
$ 11,677
$ 7,242
$ 140,126
$ 86,910
No
Yes
$ 123,576
$ 69,880
No
No
Yes
3
ROW/PL
12
113
7
1
$95,000
$ -
$ 61,796
$
$ 3,090
$ 17,030
$ 8,192
$ 8,192
$ 98,299
No
$ 81,269
Yes
14
113
8
1
$95,000
$ -
$ 71,235
$
$ 3,562
$ 17,030
$ 9,183
$ 9,183
$ 110,192
No
$ 93,162
Yes
16
113
8
1
$95,000
$ -
$ 78,616
$
$ 3,931
$ 17,030
$ 9,958
$ 9,958
$ 119,492
No
S 102,462
No
6
1171
7
2
$190,000
$ 8,499
$ 55,405
$ -
$ 8,000
$ 75,000
$ 2,770
$ 23,910
$ 17,358
$ 17,358
$ 208,301
No
$ 184,391
Yes
8
171
10
2
$190,000
$ 8,499
$ 67,385
$ -
$ 8,000
$ 75,000
$ 3,369
$ 23,910
$ 18,616
$ 18,616
$ 223,396
No
$ 199,486
No
10
171
12
2
$190,000
$ 8,499
$ 78,593
$ -
$ 8,000
$ 75,0001
$ 3,930
$ 23,910
1 $ 19,7931
$ 19,793
1 $ 237,517
No
$ 213,6071
No
4
ROW/PL
12
171
14
2
$190,000
$ 8,499
$ 92,039
$ -
$ 8,000
$ 75,000
$ 4,602
$ 23,910
$ 21,205
$ 21,205
$ 254,459
No
$ 230,549
No
14
171
15
2
$190,000
$ 8,499
$ 106,928
$ -
$ 8,000
$ 75,000
$ 5.346
$ 23,9101
$ 22,768
$ 22,768
$ 273,220
1 No
$ 249,310
No
16
6
171
1705
16
6
9
2
2
3
$190,000
$190,000
$285,000
$ 8,499
$ 35,039
$ 119,529
$ 286,317
$ -
$ -
$ 8,000
$ 75,000
$ 5,976
$ 14,316
$ 23,910
$ 48,650
$ 24,091
$ 38,432
$ 24,091
$ 38,432
$ 289,097
$ 461,186
No
No
$ 265,187
$ 412,536
No
No
No
8
705
ROW
10
705
11
3
$285,000
$ 35,039
$ 333,740
$
$ 16,687
$ 48,650
$ 43,412
$ 43,412
$ 520,938
No
S 472,288
No
5
12
705
13
5
$475,000
$ 35,039
$ 390,997
$ -
$ 19,550
$ 48,650
$ 49,424
$ 49,424
$ 593,082
No
S 544,432
No
14
705
14
7
$665,000
$ 35,039
$ 451,522
$ -
$ 22,576
$ 48,650
$ 55,779
$ 55,779
$ 669,344
No
S 620,694
Yes
16
705
16
7
$665,000
$ 35,039
$ 505,004
$ -
$ 25,250
$ 48,650
$ 61,394
$ 61,394
$ 736,731
No
$ 688,081
No
10
184
7
1
$95,000
$ 9,145
$ 84,752
$ -
$ 4,238
$ 10,900
$ 10,903
$ 10,903
$ 130,841
No
$ 119,941
No
12
184
8
1
$95,000
$ 9,145
$ 99,254
$ -
$ 4,963
$ 10,900
$ 12,426
$ 12,426
$ 149,114
No
$ 138,214
No
6
ROW/PL
14
184
9
1
$95,000
$ 9,145
$ 115,074
$ -
$ 5,754
$ 10,900
$ 14,087
$ 14,087
$ 169,047
No
$ 158,147
No
16
184
10
1
$95,000
$ 9,145
$ 128,521
1 $ -
$ 6,426
$ 10,900
$ 15,499
$ 15,499
1 $ 185,990
No
$ 175,090
No
' The Miscellaneous Construction Cost for NB No. 1 is to reconstruct the adjacent trash bin enclosure
The Miscellaneous Construction Cost for NB No. 4 is for landscape repair to the adjacent property
3 Utility Relocation Cost for NB No. 1 is for the relocation of a power pole with transformer.
° Utility Relocation Cost for NB No. 4 is for the relocation of a power pole and underground conduits.
dBA = A -weighted decibels
ft = feet
Misc = miscellaneous
PL= property line
ROW = right-of-way
6/18/2019 1 of 1