HomeMy WebLinkAboutItem 6.2 Sprint SDRCITY CLERK
File # ^~~~-~~
AGENDA STATEMENT
CITY COUNCIL MEETING DATE: October 2, 2001
SUBJECT: PUBLIC HEARING: Sprint PCS, PA 01-018 Site Development
Review This item was continued from the September 18, 2001, City
Council Meeting (Report Prepared by: Andy Byde, Senior Planner)
ATTACHMENTS: 1. Resolution approving PA 01-018 Site Development Review
2. Photo simulation- looking southwest from San Ramon Rd.
3. Photo simulation- looking north from the parking lot
4. Project Plans
5. Acoustic Impact Evaluation
6. References of equipment abbreviations shown on project plans
RECOMMENDATION: 1. Open Public Hearing
2. Hear Staff Presentation
3. Hear Applicant's Presentation
4. Question Staff,. Applicant and the Public
5. Close Public Hearing
6. Deliberate
7. Adopt Resolution approving Site Development Review
(Attachment 1)
FINANCIAL STATEMENT: The applicant has proposed to provide the following lease terms: 5 years
with three, five year renewal options (tota120 years}; rent of a maximum of $1,000 per month with 3%
annual increases.
PROJECT DESCRIPTION:
The applicant is proposing to construct a new telecommunication facility adjacent to the rear parking lot
of the Shannon Center, located on the northeast portion of the site. The proposed telecommunication
facility would be located within a light standard and would attain a maximum height of 30-feet above
grade (the proposed light pole would match the existing light standards used on-site and would measure
6-3/4" in diameter and would be 25'-3" high, while the antenna would be the same diameter and would
add an additional 4'-9" in height to the top of the pole). The applicant also proposes to construct a 230
square foot accessory structure that would attain a maximum height of 10-6" above grade and would
contain a battery back up, air conditioning, etc. (see Attachment 4 for a complete description of the
equipment that will be located with the accessory structure). In addition to the proposed
telecommunication facility, the applicant proposes to construct a new trash enclosure adjacent to the
telecommunication facility, install new landscaping adjacent to the existing pathway near San Ramon
Rd., and repair the asphalt (Slurry Seal) of the rear parking lot (adjacent to the new facility). The
COPIES TO: APPlicant
PA File
ITEM NO.
G:\PA#\2001\O1-018\cc staff report 10-2-Ol.doc (~
proposed telecommunication facility would be 74 feet from the edge of the San Ramon Road right-of-
way, to the east.
Proposed Lease Terms:
Provided that the City Council approves the proposed telecommunication facility, Sprint PCS will be
requesting a lease from the City in order to construct the proposed telecommunication facility. As
currently proposed, Sprint will construct the improvements, including the trash enclosure and landscaping,
in return for along-term lease from the City. Sprint is requesting an initial five-year lease with the City
that will automatically be renewed for three additional five-year terms. Sprint will pay the... City $1,000
per month which will be increased by three percent annually. The total value of the lease over the
proposed 20-year term is $322,446. Sprint estimates that the value of the dumpster enclosure and
landscaping is $20,000.
BACKGROUND:
Shannon Park is a 10-acre community park located on Shannon Avenue and San Ramon Road. The park
includes a children's play area with interactive water play structure, walking paths, picnic tables and is the
site of the Shannon Community Center. The .Shannon Community Center is the location of most of the
City's Recreation Programs and is also available for rental by the public. During the summer the paxk is
the site of the City sponsored Camp Shannon and Fun-in-the-Sun programs. The community heavily uses
both the park and the community center.
Parks and Community Services Commission Meeting:
On August 20, 2001, the Parks and Community Services Commission considered the proposed Sprint
PCS Telecommunication Facility at Shannon Park. The Commission was asked to provide a
recommendation to the City Council on the following:
1. Is Shannon Park an appropriate location for the proposed facility?
2. Is the design of the proposed facility compatible with the surrounding environment?
3. Are the proposed lease terms generally acceptable?
On a majority vote, the Commission recommended approval of the Sprint PCS Telecommunication
Facility at Shannon Park. Further, the Commission found the lease terms acceptable.
.Planning Commission Meeting:
Planning Staff referred this project to the Planning Commission pursuant to Section 8.96.020.C.2 because
of the policy issues surrounding placing a private telecommunication facilities on City Park property.
Section 8.96.020.C.3, states that "At any point in the project review process the Planning Commission
may transfer original hearing jurisdiction to the City Council at its discretion because of policy
implications, unique or unusual circumstances, or the magnitude of the project". On August 28, 2001, the
Planning Commission voted on 3-0-2 to transfer the original hearing jurisdiction to the City Council for
the Site Development Review of the proposed telecommunication facility due to the resulting policy
implications of placing a private telecommunication facility within a City Park. Additionally, the
Planning Commission found that the proposed facility blended with the surrounding existing natural and
man-made environment of Shannon Park.
2
ANALYSIS:
Consistency with the Zoning Ordinance, Wireless Communication Regulations:
Section 8.92.060 of the Zoning Ordinance (Wireless Communication Regulations) prohibits the placement
of Wireless Communication facilities upon property designated Parks/Recreation (such as Shannon Park)
unless it blends with the surrounding existing natural and man-made environment in such a manner as to
be effectively unnoticeable and a finding is made that no other location is technically feasible.
Staff finds the proposed facilities will blend with the surrounding existing natural and man-made
environment of Shannon Park because of the nature of the proposed facilities (replacement of an existing
light standard and. the accessory structure designed to match the Shannon Center). Additionally, the
applicant has provided information to Staff regarding the technical feasibility of locating the facility on
another site. The only other potential site is St. Raymond's Church. The applicant has informed Staff, the
various representatives from Sprint were unsuccessful entering into negotiations with representatives from
St. Raymond's. All other uses within the area are residential, which are inappropriate for the location of
wireless communication facilities. As mentioned above, the Planning Commission recommended to the
City Council that the proposed facility blended with the surrounding existing. natural and man-made
environment.
Noise:
The project sponsor commissioned an acoustical consultant to analyze potential noise impacts related to
impacts of the proposed telecommunication facility, including the air conditioning unit that would be
installed to cool the accessory structure (see Attachment 5). Noise measurements are expressed in
decibels ("dB"), which is the standard measure of sound pressure. Filters are used with some noise
measuring equipment to suppress frequency ranges that the human ear cannot readily detect. The "A"
filter is used for such measurements. All noise levels discussed are "A-filtered" or "A-weighted" decibels
("dBA"). The average dBA during a specified measurement period, typically one hour, is expressed as
the "Leq," or equivalent noise level. The average dBA during a 24-hour period is expressed as the "Ldn,"
or day-night noise level. The General Plan identifies that the normally acceptable maximum outdoor L~,
noise level is 60 dBA for residential areas.
The noise consultant took noise measurements on September 13, 2001, from 8:50 p.m. to 11:00 p.m.,
adjacent to the closest residences, to evaluate the quietest background noise level that would exist on the
site. The conclusion of the noise analysis was that the existing background noise Level was 51 dbA to 56
dBA. The highest sound level anticipated to be produced by the air conditioning unit would be 48 dBA;.
therefore the noise level would be less than the existing background noise level experienced by the closest
residences.
Conclusion:
Staff has reviewed the proposed telecommunication facility and has determined that the project: (1) meets
Zoning Ordinance, Wireless Communication Regulations; (2) will not exceed the existing noise levels of
the area surrounding Shannon Park; (3) Parks and Community Services Commission has determined the
facility would be in an appropriate location and would be compatible with the surrounding environment;
and. (4) the Planning Commission determined the facility blended with the existing environment.
Should the City Council approve the SDR, Parks and Community Services Staff will bring the general
proposed lease terms (amount per. month and time frame) to the Council at a later meeting, if the Council
approves the proposed general lease terms, Staff will then request to receive authority to negotiate the
final details of the lease and will bring the lease back to the Council for final execution.
3
RECOMMENDATION:
Staff recommends the City Council take testimony from the Applicant and the. public; question Staff, the
applicant, and the public; close the public hearing and deliberate and adopt Resolution approving a
approving Site Development Review (Attachment 1).
4
RESOLUTION NO. XX-O1 ~ ~ ~ `,~
A RESOLUTION OF THE CITY COUNCIL
OF THE CITY OF DUBLIN
APPROVING THE SITE DEVELOPMENT REVIEW
FOR THE SPRINT PCS PROPOSED TELECOMMUNICATION FACILITY
PA 01-018
WHEREAS, Dennis Martin, on behalf of Sprint PCS, has requested approval of a Site
Development Review to allow a new telecommunication facility adjacent to the rear parking lot of the
Shannon Center, located on the northeast portion of the site located at 11600 Shannon Avenue; and
WHEREAS, a complete application for the above noted application request is available and on
file in the Department of Community Development; and
WHEREAS, Applicant/Developer has submitted project plans for a Site Development Review
dated received September 18, 2001; and
WHEREAS, this project has been found to be Categorically Exempt from CEQA under Section
15301, Class 1 of the California Environmental Quality Act Guidelines because the project consists of
construction of an accessory telecommunication facility which is currently served by all required utilities
and public services; and
WHEREAS,. the Planning Commission held a public. meeting as required by law on August 28,
2001, and transferred original hearing jurisdiction for this project to the City Council pursuant to Section
8.96.020.C.3 of the Zoning Ordinance.
WHEREAS, the City Council did hold a public hearing on said application on September 18,
2001, and continued to October 2, 2001, for this project; and
WHEREAS, proper notice of said public hearing was given in all respects as required by law;
and
WHEREAS, a Staff Report was submitted recommending that the City Council approve Site
Development Review subject to conditions; and
WHEREAS, the City Council did hear and use its independent judgment and considered all
said reports, recommendations, and testimony hereinabove set forth.
NOW, THEREFORE, BE IT RESOLVED THAT THE City Council of the City of Dublin
does hereby make the following findings and determinations regarding said proposed Site Development
Review:
A. Approval of this application is consistent with the purpose and intent of this Chapter because
the proposed facility is permitted within the Zoning District, subject to the determination that
the proposed project blends with the surrounding existing natural and man-made environment
in such a manner as to be effectively unnoticeable and a finding is made that no other location
ATTACHMENT 1
is technically feasible. ~ ~ ~
B. The proposed facility blends with the surrounding existing natural and man-made environment
in such a manner as to be effectively unnoticeable because of the proposed design, location,
and proposed landscaping.
C. No other location is technically feasible because of the location is surrounded by residential
uses which are inappropriate for the location of telecommunication facilities.
D. The project is consistent with Public/Semi-Public designation of the General Plan.
E. The approval will not adversely affect the health or safety of persons residing or working in the
vicinity, or be detrimental to the public health, safety and general welfare.
F. The approved site development, including site layout, and structures have been designed to
provide a desirable environment for the development.
G. The subject site is physically suitable for the type and intensity of the approved development
because it is graded flat, has vehicular access and access to all public services.
H. Impacts to views are addressed because the project does not interrupt any views from San
Ramon Road, Shannon Park, or the adjacent residences.
I. Impacts to existing slopes and topographic features are addressed because the site is graded
flat.
J. Architectural considerations, including the character, scale and quality of the .design, the
architectural relationship with the site, and colors, screening of antennas, exterior lighting, and
similar elements have been incorporated into the project and as conditions of approval in order
to insure compatibility of this development with the Shannon Park's design concept or theme
and the character of adjacent neighborhoods, and uses.
K. Landscape considerations, including the location, type, size, color, texture and coverage of
plant materials, provisions and similar elements have been considered to ensure visual relief
and an attractive environment for the public.
BE IT FURTHER RESOLVED THAT THE City Council of the City of Dublin does hereby
approve the Site Development Review for PA 01-018, Sprint PCS, subject to the following Conditions of
Approval. This approval shall be generally depicted on the following plans: the- architectural plans
prepared by ATI architects and engineers, labeled Attachment 1, consisting of seven (7) sheets, dated
September 18, 2001 and a material sample, stamped approved and on file with the Dublin Planning
Department, subject to compliance with the following conditions of approval:
CONDITIONS OF APPROVAL
Unless otherwise stated, all Conditions of Approval shall be complied with prior to final occupancy of any building
and shall be subject to Planning Department review and approval. The following codes represent those
departments/agencies responsible for monitoring compliance with the Conditions of Approval• ~PL~ Planning
Building, ~PCS~ Parks and Community Service, ~PO~ Police, ~PW~ Public Works, ~ADM~ Administration/City
Attorney ~FIN~ Finance 1PCS~ Parks and Community Services, fF~ Alameda County Fire Dept., 1DSR~ Dublin
San Ramon Services District f COQ Alameda County Flood Control and water Conservation District Zone 7.
2
SITE DEVELOPMENT REVIEW
~ ~~ ~
This Site Development Review approval for PA-Ol -018 establishes the design concepts and regulations
for the project. Development pursuant to this Site Development Review generally shall conform to the
approved plans and documents available on file in the Department of Community Development as
amended in red.
NO. CONDITION TEXT RESP. WHEN SOURCE
AGENCY REQ'D
(Prior to)
GENERAL CONDITIONS
1. Approval. Approval of the Site Development Review is PL BP
valid for one (1) year, until October 2, 2002. If construction
has. not commenced by that time, this approval shall be null
and void. The approval period may be extended for six (6}
additional months by submitting a written request for
extension prior to the expiration date to the Community
Development Director. Any extension will be based on a
determination that the conditions of approval remain
adequate to assure that the stated findings of approval will
continue to be met
2. Lease Execution. The applicant shall demonstrate that a B Issuance of Standard
lease has been executed with the City of Dublin prior to the Building Permits
issuance of any building permit.
3. Building Permits. To apply for building permits, B Issuance of Standard
Applicant/Developer shall submit twelve (12) sets of Building Permits
construction plans to the Building Department for plan
check. Each set of plans shall have attached an annotated
copy of these Conditions of Approval. The notations shall
clearly indicate how all Conditions of Approval will or have
been complied with. Construction plans will not be accepted
without annotated resolutions attached to each set of plans.
Applicant/Developer will be responsible for obtaining the
approvals of all participating non-City agencies prior to
issuance of building permits.
3
~o~'~'J
NO. CONDITION TEXT RESP. WHEN SOURCE
AGENCY REQ'D
(Prior to)
4. Requirements and Standard Conditions. The F, Pw, PO, Prior to issuance Standard
Developer/Applicant shall comply with applicable Alameda zone 7, of Building
County Fire, Dublin Public Works Department, Dublin Dsx, PL,
AC, CHS, Permits
Building Department, Dublin Police Service, Alameda LAVTA
County Flood Control District Zone 7, Livermore Amador
Valley Transit Authority, Alameda County Public and
Environmental Health, Dublin San Ramon Services District
and the California Department of Health Services
requirements and standard conditions. Prior to issuance of
building permits or the installation of any improvements
related to this project, the Developer shall supply written
statements from each such agency or department to the
Planning Department, indicating that all applicable
conditions required have been or will be met.
5. Fees. Applicant/Developer shall pay all applicable fees in various various times, Standard
effect at the time of building permit issuance, including, but but no later than
not limited to, Planning fees, Building fees, Dublin San Issuance of
Building Permits
Ramon Services District Fees, Public Facilities Fees, Tri-
Valley Transportation Fees, Dublin Unified School District
School Impact fees, Alameda County Fire Services fees;
Alameda County Flood and Water Conservation District
(Zone 7) Drainage and Water Connection fees.
6. Required Permits. Applicant/Developer shall comply with various various times, Standard,
the City of Dublin Zoning Ordinance, obtain all necessary but no later than
permits required by other agencies (Alameda County Flood Issuance of
Building Permits
Control District Zone 7, California Department of Fish and
Game, Army Corps of Engineers, State Water Quality
Control Board, Etc.) and shall submit copies of the permits to
the Department of Public Works.
7. Building Codes and Ordinances. All project construction B Through Standard
shall conform to all building codes and ordinances in effect Completion
at the time of the issuance of the building permit.
8. Fire Codes and Ordinances. All project construction shall F Through Standard
conform to all fire codes and ordinances in effect at the time Completion
of the issuance of the building permit.
9. Ordinances. Applicant/Developer shall comply with the PL Issuance of Standard
City of Dublin Zoning Ordinance. Building Permits
and On-going
10. Noise Control. Maximum noise Ievel from the proposed PL On-going Zoning
facility and associated accessory structure shall not exceed ordinance
50 dBA as measured from the property line.
11. Infrastructure. The location and design of project specific PW Approval of Standard
system infrastructure shall be consistent with City standards. Improvement
Plans
4
~~.~~
NO. CONDITION TEXT RESP. WHEN SOURCE
AGENC REQ'D
(Prior to)
12. Mechanical Equipment. All ducts, meters, back-flow PL, B Issuance of Standard
prevention devices, blow-off valves, pad-mounted utility Building Permits
devices, air conditioning equipment and other mechanical
equipment (As determined by the Community Development
Director) that is on-site or roof mounted shall be screened
from view of all public rights of way. The location of such
equipment shall be subject to review and approval by the
Director of Community Development. A screening plan -
shall be submitted for review and approval by the
Community Development Director and Building Official
prior to approval of Building Permit. Said screening. plan
shall show that all visible mechanical and utility equipment
shall be effectively screened from view with materials
architecturally compatible with the materials of the structure.
Or with approved landscaped features
DEBRIS/DUST/CONSTRUCTION. ACTIVITY
13. Construction Trash/Debris. Measures shall be taken to PW, B On-going during Standard
contain all construction related trash, debris, and materials construction
on-site until disposal off-site can be arranged. The
Developer/Applicant shall keep the adjoining public streets
and properties free and clean of project dirt, mud, and
materials during the construction period. The applicant shall
be responsible for corrective measures at no expense to the
City of Dublin.
14. Dust. Areas undergoing grading, and all other construction PW, B On-going during . Standard
activities, shall be watered, or other dust palliative measures construction
used, to prevent dust, as conditions warrant.
DEDICATIONS. AND IMPROVEMENTS
15. Relocation of underground utilities. The proposed "E/T" PW Prior to issuance PW
underground utilities and the corresponding utility easement shall of building
be realigned to avoid damaging the existing cherry tree and Permit
surrounding shrubs. The final alignment shall be subject to the
review and approval by the Director of Public Works. The
amended plan shall show all existing landscaping and irrigation
features just north of the building. If any existing underground
utilities are discovered during the installation of the proposed
improvements, said utilities shall be protected or relocated as
directed by the Public Works Director.
~~ ~/
NO. CONDITION TEXT RESP. WHEN SOURCE
AGENCY REQ'D
(Prior to)
16. Repair of existing A.C. The parking lot and drive aisle pavement PW Prior to issuance PW
north and east of the existing Shannon Center Building shall be of building
patch paved and slurry sealed as part of the project to eliminate the Permit
cracks and provide a new wear surface. All existing pavement
markings shall be replaced as part of the slurry seal operation.
The limit of work line shall be at the point where the recent AC
overlay ends and the old paving begins at the boundary of the
main parking field in front of the Shannon Center building
17. Light Fixture. The parking lot light fixture between the proposed PW Prior to issuance PW
equipment building and trash enclosure, shall remain connected to of building
the City's circuitry, and maintenance of the fixture will continue to Permit
be the City's responsibility. The existing electrical conduits, if in
conflict with the proposed trash enclosure or equipment building,
shall be relocated in accordance with NEC requirements, and per
City standards.
18. Plats And Legal Descriptions. Plats and legal descriptions for the PW Prior to issuance PW
lease area and utility easement must be prepared by a licensed of building
Land Surveyor in a format acceptable to the City. Permit
19. Existing Tree. The existing tree shown just south of the proposed PW Prior to issuance PW
trash enclosure on the plans will conflict with the enclosure. This of building
tree shall be removed, including all root systems. Permit
20. New Irrigation System. Anew irrigation system shall be PW/PL Prior to issuance PW
designed and installed by the applicant in accordance with City of building
standards and subject to review and approval by the Director of Permit
Public Works and the Director of Community Development
21. Grading. All grading work and excavation. work shall be PW Prior to issuance PW
performed per the recommendations of a licensed Geotechnical of building
Engineer.. All fill shall be properly compacted. The plans shall be Permit
amended to eliminate. the sliver fill at the eastern corner of the
trash enclosure, and instead the foundation stem wall shall be
extended to conform to existing grade. The resultant slope
between the enclosure corner and the adjacent down-slope bike
path shall not exceed 3:1
22. Trash enclosure. The proposed trash enclosure detail shall PL Issuance of Standard
be subject to review and approval by the Community Building Permits
Development Director.
23. Trash Enclosure. The design of the trash enclosure shall be PW Prior to issuance PW
revised to include a curb or pipe rail inside the enclosure to of building
prevent the dumpsters from rolling into and damaging the Permit
enclosure walls. The concrete slab within the enclosure shall be
sloped to drain to the open end. Also, a 10'-wide concrete apron
shall be provided in front of the enclosure to provide a durable pad
for the trash collection truck to lift and lower the dumpsters.
NO. CONDITION TEXT RESP. WHEN S URCE
AGENCY REQ'D
(Prior to)
24. Improvement Agreement. The applicant shall enter into an PW Prior to issuance PW
Improvement Agreement to guarantee installation of the City- of building
owned improvements. Surety bonds or other security shall be Permit
provided to assure faithful performance of the work and payment
for labor and materials per the terms of the agreement. The
security amount shall be based on an Engineer's Estimate to be
prepared by the applicant. After acceptance of the work, the
Public Works Director may allow a reduction of the security to
25% of the faithful performance amount to assure the proper
installation of the improvements for aone-year maintenance
period.
25. Erosion Control Measures. The Developer/Applicant shall PW Issuance of PW
install erosion control measures in all areas of the site during Grading Permit
construction between October 1 and April 15 to the
satisfaction of the Director of Public Works. A plan for
erosion control shall be prepared and submitted for approval
by the Public Works Director. All erosion control measures
shall be in accordance with the latest standards of the
Regional Water Quality Control Board Manual of Sediment
Control.
26. Best Management Practices. Developer/Applicant shall Pw BLDG Standard
demonstrate to the Director of Public Works that the project
development meets the requirements of the City of Dublin's
"Best Management Practices" to mitigate storm water
pollution. The applicant shall prepare a Storm Water
Pollution Prevention Plan (SWPPP) and shall obtain a notice
of intent (NOI) from the State Water Resources Control
Board.
27. Joint Utility Trenches/Undergrounding/Utility Plans. Pw Occupancy of PW
Applicant/Developer shall construct all joint utility trenches affected units Utilities
(such as electric, telephone, cable TV, and gas) in accordance
with the appropriate utility jurisdiction standards. All
communication vaults, electric transformers, cable TV boxes,
blow-off valves and any appurtenant utility items thereto
shall be underground. Utility plans, showing locations of all
proposed utilities (including electrical vaults and
underground transformers) shall be reviewed and approved
by the DPW. Location of these items shall also be shown on
the Final Landscaping and Irrigation Plan.
Q~~ ~
NO. CONDITION TEXT RESP. WHEN S URCE
AGENCY REQ'D
(Prior to)
28. Final Landscape and Irrigation Plan. A Final Landscape PL, PW Bldg.
and Irrigation Plan conforming to the requirements of
Section 8.72.030 of the Zoning Ordinance (unless otherwise
required by this Resolution) shall be submitted for review
and approval by the Director of Public Works and the
Director of Community Development. The Final Landscape
and Irrigation Plan shall be generally consistent with the
revised Landscape Plan prepared by ATI, The Final
Landscape and Irrigation Plan, (at 1 inch = 20 feet or larger)
shall be submitted along with a cost estimate of the work and
materials proposed.
EMERGENCY SERVICES
29. ACFD Rules, Regulations and Standards. F Issuance of Standard
Applicant/Developer shall comply with all Alameda County Building Permits
Fire Services (ACFD) rules, regulations and standards,
including minimum standards for emergency access roads
and payment of applicable fees, including City of Dublin
Fire Impact Fees.
30. Emergency Generator. The emergency generator shall meet F Issuance of Standard
the requirements of NFPA 37. Building Permits
31. Graffiti. The applicant shall keep the site clear of graffiti PO Occupancy of PO
vandalism on a regular and continuous basis at all times. Any Building
Graffiti resistant materials should be used.
32. Theft prevention and security program. The applicant PO Building Permit PO
shall work with the Dublin Police Services on an ongoing
basis to establish an effective theft prevention and security
program.
33. Non Residential Security Requirements. The Developer PO Occupancy of PO
shall comply with all applicable City of Dublin Non Any Building
Residential Security Requirements.
~ ~~~
PASSED, APPROVED AND ADOPTED this 2na day of October, 2001.
AYES:
NOES:
ABSENT:
ATTEST:
City Clerk
G:1PA#120 0 110 1-0 1 8\CC Sdr resoultion9-27-Ol.doc
Mayor
9
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ustics & Vibration Grou`~~~
The Aco p.
500 Broadway Sacramento, CA 95820-1852
916-4571444 FAX 916-457-1475
Consultants in Acoustics, Vibration & noise Control
Sprint Corp.
c/o Dennis Martin
The Sausedo Company
69 Lester Avenue
San Jose, CA 95125
SY7BJECT:. Results of Evaluation of Acoustic Impact of Proposed Cellular Site at Shannon Park in
Northwest Dublin
Dear Mr. Mattin,
Documented in this report are the results of a brief noise impact study for the subject project at
Shannon Park in Dublin next to San Ramon Road. Sprint will be installing cellular antennae and associ-
ated facilities in the northeast corner of the park owned by the City of Dublin. The antennae will be
added to a light pole while a building will be erected next to the pole. The project site is at the north-
east corner of the staff parking lot that is on the north side of the community center; .Sprint will con-
struct the building to house the mechanical and electrical equipment needed to allow the antenna to
function. A single air-conditioning unit will be installed to provide cooling and ventilation.
The main sound source of concern at the site will be the new heating, ventilating and air-condition-
ing (FiVAC} equipment_ A Bard 3 or 5 ton unit will be installed on the east face of the building enclos-
ing the cellular equipment. This is the side closest to San Ramon Road. Sprint does not normally en-
closethe equipment so ventilation is not required. One residential development lies north of the site
while another is east ofthe proposed facility. The homes to the north are on land that is at much higher
elevation than the project site while the homes to the east area at a much lower elevation.
The City of Dublin requires compliance with the noise limits given Noise Element in the General
Plan [1]'. The City does not appear to have a noise ordinance or at least no information has been re-
ceived from requests made to the PlanningDepartment and the Police Department. The Noise Blemerrt
sets Iimits base on the day-trigt-t average, I,~„, sound level. Typical noise ordinances set limits based on
same measure of sound when measured over one hour. The County of Alameda Noise Ordinance [2]
was used to set sound goals for this project.
Background sound levels exceed the noise limits given in the Alameda Noise Ordinance. The
measured background sound levels were used as the design goat for the project. Background sound
levels varied from 51 dB(A} at the most distant position to 56 dB(A) at the residential property closest
to the project. Sound levels provided by the HVAC manufacturer were used to predict the sound levels
at the nearest property, 60 feet from the equipment. The predicted level is less than 50 dB(A). This
meets the design goal and is less than background sound levels. Sound reduction should not be needed,
but more sound attenuation can be provided if needed.
ATTACH ENT.S
- Number(s) in tuackels refer t0 referecu~s listed at the end Of the report.
Z0' d LLS T--0T6L89bSZ6T Ol d~J~J ND I ld~tS I f1 '8 SO I 1Sf100d W0~1~ 9~ : bT I00Z-8~-d3S
^
September 18, 2001
~D ~~`
The Group
R0117T: semedNSprtBt, shsnaon Park Tower, NoJae Lnpwet Aaaya~. Septesbcr 18, 2001
ACOUSTIC STANDARDS
This noise impact study has been done per general requirements of the City of Dublin. . The Noise
Element of the General Plan sets sound limits based on land use. Typically, the Noise Element ad-
dresses sound generated by transportatian sound sowces and those non-transportation sound sources
that run almost continuously. Normally, noise ordinances are employed in evaluating the influence of
non-transportation sound sources such as mechanical equipment. Different sound descriptors are used
for non-transportation sound sources. These are described in the following sections.
Noise Elemen# Requirements
The day-night noise descriptor is used to evaluate transportation sound sources and some fixed
sources.:lt averages measured or predicted sound levels over 24-hours after applying a 10 dB penalty
to nighttime sounds. Hourly average sound levels, Lam, are measured or predicted for each hour of the
day or for each hour during which a sound source is present. A 10 dB penalty is added to each hourly
average sound level measured or predicted from 10:00 p.m. to 7:40 a.m. The penalty is applied because
people trying to sleep during these hours are more sensitive to external sounds. Yt is possible to exclude
or include only certain sources. For example, the sounds of aircraft operating over a project site are
included only during those hours when they occur. If there are no events during the nighttime, no pen-
alty would be apglied. When some sources are excluded from the analysis, it is called the Background
L~, sound level.
Residential sites with an exterior L~, noise exposure of less than 64 dB are "Normally Acceptable"
according to Table 9.1 of the Noise Element showing Land Use Compatibility [1]. A site is "Condi-
tionally Acceptable" if its exterior noise exposure is in the range of 60 to 70 dB, and `formally Unac-
ceptable" if its exterior La„ sound level exposure is between 70 and 75 dB.
Non-Transportation Sound Goals
An example of a noise ordinance that could be uses is the Noise section ofthe Alameda County
Municipal Code []_ The Noise section is in Chapter 6.6 of the County's Code. It limits the amplitude
and duration of sound produced over any given 1-hour period by sources not related to transportation
equipment. This includes the rx~aximum sound level. It gives sound limits based on the type of receiver,
the duration of the sound, the time of day of occurrence, background sound levels and the tonal content
of sound. It is a municipal code and is enforceable with limited exceptions.. Sources are regulated by
the limits given in Table I when the receiving properties are either single or multiple family residential,
schools, hospitals, churches or public libraries.. The Noise Ordinance applies a 5 dB penalty to the limits
given in Table I when the sound comprises mainly speech or music or if it contains pure tones or impact
sounds. When background sound levels equal the limits given in Table 1, the limits are raised to the
background sound level. Limits apply to any point on the residential property when measured 1-foot or
more inside the property line and four to five feet above ground level:
2
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Et0117?: Seuseddsprbit, SLaooon Park'rover, Ndse ImpRCt Ads, September 18, ZODS
TABLE L Noise Ordinance Limits for Alameda County for Residential Property Affected by Non-
'1'ranspartatian Sources.
E~-terior Sound Level Limits, cID(A)
Cumulative Number oPMinutes in any Daytime Nghttime
~~gory one-hour period ~ a.m. to 10 P•m. lU p.m_ to 7 a.m,__
1 30 (l-w) ~ 50 45
15 (l-is) 55 50
3 5 ~-~.~) 6V 55
~ l (1-~.~) 65 60
5 0 (l~a>J ?0 65
Peaalry applied to pure tones, speech ~ impact sounds0 -5 -`'
0 -Add to limit when sound comprises these.
The limits given in Table I were used as noise goals for the equipmenrt to be installed at the Sprint
site in Shannon Park.
PROJECT DESCRYPTION
Spritrt is proposing to install a cellular telecommunicationfacility in a City owned parkin north-
west Dublin. The project site is in the northeast corner of Shannon Park, along the edge of the staff
parking lot. This lot is on the north side of the community center. The project entails the addition of
antennae to a light pole, addition of electrical systems and the construction of a building to house the
electrical systems. Typically, these electrical systems are left out in the open, but for aesthetic reasons,
the equipment will be enclosed in a building. An air-conditioning unit will be installed on the east face
of the building to provide cooling and ventilation for the electrical equipment. This is the side of the
building next to San Ramon Road.
Shannon Park is a City property. The park includes open area, walling trails, parking and a com-
munity center. The main building faces south and lies in the east west direction. The park is sur-
rounded by residential developments, with San Ramon Road on the east side and Shannon Road on the
south side. San Ramon Road is a major City street with tw'o through lanes in each direction and a me-
dian. A walking trail is found on the west side of the road, connecting to trails in the park. Shannon
Road is a two lane road with a Light at the intersection with San Ramon Road. Land north and west of
the project site rises steeply. One home is built at the crest of the hill and can look down on the site.
Land drops in elevation from the site down to San Ramon Road then drops again on the east side of the
road. A 6 foot tall sound wall was constructed on the west side of the residential land lying east of the
road. The base of the wall is below road elevation. An additional 4-foot high concrete wall exists at the
side of the east side of San Ramon Road, northeast of the project site.
TEST PROCEDURES 8c EQiTIPMENT
Standard sound measuring equipment was used during the tests. Field sound measurements were
made using two CEL 593 Sound Analyzers (s/n 2/0881414 and s/n 3/0201692), a CEL 480 Sound
Level Meter (s/n 129848) and a Larson Davis Lb720 Sound Level Meter. The three CF..~. meters em-
ploy a'/Z inch random incidence condenser microphone. The LD72A meter uses a 3/8 inch piezoelectric
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microphones. A CEL Type 284/2 calibrator was used to calibrate the'h inch microphones to 114
dB(A) at 1000 Hz before beginning measurements. The smaller microphone was calibrated at 114
dB(A) at 1000 Hz at the start of the tests with a Larson. Davis CA150 calibrator. All three CEL meters
conform to all the requirements of a Type I meter per American National Standards Institute j3]. The
LD'720 meter is a Type II sound level meters per this standard. A windscreen covered each microphone
during al! sound measurements. All meters can measure statistical sound levels such as the Lia, the
sound level exceeded 10 percent of the time, the L~,, the sound level exceeded SO percent of the time,
the Lam, the sound level exceeded 90 percent of the time and the average sound level, L,~. The sound
level meters also capture the rnaximum sound level, Lam. One of the CEI.593 meters was used to
collect representative sound level tones in one-third octave bands.
Background sound level measurements were made.-from 8:50 p.m. to 12:00 p_m. on September 13,
2001. Both daytime and nighttime sound measuremerns were made. The hours during which the tests
were made should represent some of the quietest hours. Three sound level meters were used to capture
statistical information about the sound while a fourth meter was used to measure the tonal content of
the sound. The statistical information is used to compare results with the noise limits given in Table I.
Because of the possibility of penalties, the tonal content of the sound is important also. Tonal content
ar combination of pitches is hoHr a person differentiates the sound of a tuba from a flute_
Measurements were made at three positions. The microphones and meters were mounted on
tripods about 5.5 feet above ground level. Position # 1 was at the top of the hill at Lot 90, 10 feet south
of the property line and near the centerline of the house. Position #2 was 6 feet south of the park's
north boundary near the centerline of Lot 92. Position #3 at the north edge of the .proposed building to
be constructed by Sprint. This was the closest position to San Ramon Road and was about 50 feet
south of the nearest re~dential property. Continuous measurements were miade at each position.
RESULTS
The purpose of the current tests was to document typical or best case background sound levels_ In
this instance, "best case" means the lowest expected sound levels. Typical sound sources at the site
include road traffic on San Ramon Road, crickets, dogs barking and commercial jet flyovers. Road
traffic was the dominant sound source. Table IY presents the average and other statistical descriptors of
the sound measured at the three positions.
A comparison of the results given in Table II with the noise limits in Table I shows that back-
ground sound levels were at or above the noise goals. Thus, the new goal would be the background
sound level. The closer the position was to San Ramon Road, the louder was the sound. Only a small
drop in sound level was measured as the night progressed. Barking dogs were a very important sound
source. Dogs barked when people cam across the trail with their dogs and whenever the tester ap-
proached the north property line. Figure 1 shows the sound levels measured at Position #1 while~Figure
2 displays the sound levels measured at Position #2.
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1ROI t'17: Sensedo/sprint, Spnpgon I'~ric Tower, Note Input Analy~, SepfmDer 18, 2001
TABLE II. Background Sound Z,evels Measured at Three Positions in Shannon Park in Dublin Near
Proposed Sprint's Proposed NW Dublin Telecommunications Facility.
Test Test Measured Sound Level, dB(P~
Position illtetvsl, p.m. L~ Lia Ls.~ ~xs 1-~o I-vo I-~
8:50-9:00 54 61 59 58 36 54 51
9:00-10:00 54 63 59 57 56 54 SO
10a10-10:50 55 74 63 57 54 S2 49
Total Tir,~ 8:50-10:50 SS 7~ 59 S7
_.. 55 s3 SO
9:00-10:00 56(51) 82(68) - _
. 55(53) 51(51) 50(50) 48(48)
2 10:00-10:30 67(50) 85(59) - 61(52) 55{51) 51(54) 48(48)
Total 7Fme 9: 00.10:30 63 51) 85(68)
_
. 53(S3)
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. S1(Sl)
_ SO(SO)
~ 48(48)
3 9:20-10:00 55 ___ _
_
._ 77 ~. ~S9
61 56 S4 49
As part of the proposed mobile cellular site, an HVAC system will be installed to maintain accept-
abletemperatures within the building. A fnal decision has not been made on the size of the unit to be
installed. Either a 3-ton or a 5-ton unit will be installed, similar to the units installed at the residences
surrounding the park. Sound data was provided by the Bard distributor and this data was used to pre-
dict sound levels at the nearest homes. -The nearest property line, Parce189, will be about fi0 feet from
condenser unit. No home is visible at this site because of vegetation_ Thus, the area where people
could detect the sound would be even farther north. The predicted sound level is 48 dB(A). This easily
meets the day time limits given in Table I. Because of the measured background sound levels, it meets
the nighttime limit also. The sound level at the home on Parcel 90 and 92 will be even lower because. of
shielding by the building,. The nearest home to the east is 300 feet away. The sound lave! will be even
Lower at this site.
Ct3NCLUSIONS
Background sound levels at the homes closest to the project site are Beater than the noise goals
that were based on limits of Alameda County. Based on the condenser manufacturer's data, the sound
level with the condenser operating will be less than background sound levels. Though sound reduction
should not be needed, additional sound reduction is possible using standard procedures.
Please call me if you have any questions regarding the results or conclusions. L,et me know if there
are any other acoustical issues that need to be addressed.
i
Sincerely,
p
Steve Pettyjohn, 'pal
Certified: Institute of Noise Colttrol Engiincers-1981
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REk'ERENCES
1. City of Dublin General Plan, Noise Elemesu, Chapter 9. 1992.
2. Anon., Chapter 6.6U NOISE, Alameda County, Municipal Codes.
3. American National Standards Institutc, ANSI, S`tund~a~J Specific ion For Sound Laval Meters, 51.4-1983
(Pl6C1~tiOlt~_ .
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Sprint PCS Proposed Antenna Facility at 11600 Shannon Ave.
NW Dublin SF36xc022A
References equipment abbreviations shown on plans:
1. PRC (Primary Radio Cabinet):
Contains the Base Transceiver Station (BTS) which are separate but linked
transmit and receive radios.
2. PWR (Power Cabinet or "Powerhouse"):
Is where the A/C power comes in and converts the power from A/C to D/C (which
is what our equipment runs on). Contains rectifiers and is the biggest user of
power of all equipment.
3. B/U (Back Up Battery Cabinet):
Holds up to 20 batteries for back up in case of power failure. Normal back up is
4 batteries. Generally, each battery is worth 30 minutes.
4. GR (Growth Cabinets):
To add additional BTS's. Smaller than the PRC.
5. PWR (Future):
Power for the future BTS's.
6. Telco:
Where Pac Bell brings their T-1 line into our NIU (Network Interface Unit)
7. Elec:
Where PG&E brings power to our site. Contains breakers. Emergency
Generator Receptacle (commonly called the Appleton Plug) is attached. If
necessary can be detached and mounted elsewhere, but requires extra wiring
and has higher chance of failure.
8. AlC (Air Conditioner):
Required on all shelters with roof in this area. Should not be more than 3 ton
capacity.
9. Meter:
PG&E meter.
10. GPS (Global Positioning System) Antenna:
Necessary for timing of BTS's on all sites. Must have UNOBSTRUCTED
exposure.
ATTACHMENT 6