HomeMy WebLinkAbout3.1 ITEM 3.1
TOWN OF LOS ALTOS HILLS October 1, 2015
Staff Report to the Planning Commission
SUBJECT: CONDITIONAL.USE PERMIT FOR MODIFICATIONS TO AN EXISTING/
PREVIOUSLY APPROVED WIRELESS COMMUNICATIONS FACILITY.
LANDS OF CALIFORNIA STATE DEPARTMENT OF TRANSPORTATION
(APPLICANT: AT&T C/O TOM JOHNSON); 2350 PAGE MILL ROAD; FILE
#208-15-ZP-SD-CUP
FROM: Steve Padovan, Contract Planner
APPROVED: Suzanne Avila,AICP,Planning Director siq
RECOMMENDATION: That the Planning Commission:
Forward a recommendation to the City Council that the Conditional Use Permit for
modifications to an existing wireless communication facility beapproved, subject to the findings
in Attachment 1 and conditions of approval in Attachment 2.
BACKGROUND
The subject property is a 2.3 acre triangular portion of the Interstate 280/Page Mill Road,
interchange owned by the State of California. The property is bordered by the I-280 freeway,
Page Mill Road and the northbound freeway onramp from westbound Page Mill Road. it is
traversed by Matadero Creek and contains a Caltrans maintenance yard fronting Page Mill Road.
A 63-foot tall monopole (total height of the tower with antennas is 67 feet) is located within a
separate fenced portion of the Caltrans yard, adjacent to the freeway. The pole is owned by..
Crown Castle and includes five (5) co-located cellular serviceproviders and several.equipment
sheds. The tower and antennas are painted olive green to blend with the existing heavy
vegetation on the northerly and westerly edges of the e Caltrans yard. The closest residence on
Christopher's Lane is approximately 400 feet away..-
On February 5, 1997.the City Council approved the installation of the monopole along with the
co-location: of antennas for three wireless communication providers; T-Mobile, AT&T and
Sprint;An additional wireless carrier, Verizon, was approved in 1998 followed by Metro PCS in
2002. More recently, the City Council approved a ten year renewal for the AT&T antennas until
September 2021.
PROPOSED PROJECT
The applicant, AT&T, is requesting approval of a Site Development Permit and Conditional Use
Permit for modifications to their existing antenna array which is located at the top of the
monopole. The proposed project involves the installation of longer crossbars (from 5 feet to 7
feet long) and an increase in the distance from the crossbar to the monopole (from 3 feet to 4 feet
Staff Report to the Planning Commission
Lands of the State of California
October 1,2015
Page 2 of 3
from the pole). This will allow for the addition of one new panel antenna in each sector (for a
total of four new antennas) resulting in a total of 12 panel antennas at the top of the pole. In
addition, several new equipment cabinets will be installed inside the existing equipment shed to
accommodate the new antennas. The proposed panel antennas are of similar size to the existing
panel antennas and will be painted to match the existing poles and antenna. The purpose of the
new antennas is to improve the performance and capacity of the existing 4G LTE network by
improve data transfer speeds (see Attachment 3).
CODE REQUIREMENTS
Wireless Communications facilities are regulated under Section 10-1.703 (h) (2) and 10-1.1007
(1) of the Los Altos Hills Municipal Code. The project was reviewed for compliance with the
requirements in the Wireless Communications Facilities Policy including: collocation of
facilities, location of the antenna, landscape screening, and exterior color to ensure that the
facility blends with the surrounding area. The Municipal Code also requires that all Conditional
Use Permits be reviewed by the Planning Commission and City Council.
DISCUSSION
Wireless Communications Facilities Policy
The existing facility and the proposed modifications are consistent with the Town's Wireless
Communications Facilities Policy(Attachment 4). The property is a non-residential parcel in the
middle of a freeway interchange that contains a Caltrans maintenance yard, multiple wireless
communication facilites, and existing mature landscaping that shields the view from the residents
most affected by the location of the facility. In addition, the overall height of the structure will
not change, the silhouette of the tower will not increase substantially, and the antennas will be
painted to blend in with the existing vegetation(see photos in Attachments 5 and 6).
Radio Frequency Emissions
The radio frequency emissions analysis provided by the applicant (Attachment 7) indicates that
the electromagnetic radiation emitted by the antennas on the site are within the Federal
Communications Commission maximum permissible exposure limits for a general
population/uncontrolled exposure environment.
Conditional Use Permit Findings
The following findings are required to grant the Conditional Use Permit for the modification to
the wireless facility:
(1) The proposed use or facility is properly located in relation to the community as a whole,
land uses, and transportation and service facilities in the vicinity;
(2) The site for the proposed use is adequate in size and shape to accommodate the proposed
use and all yards, open spaces, walls and fences, parking, loading, landscaping, and such
Staff Report to the Planning Commission
Lands of the State of California
October 1,2015
Page 3 of 3
other features as may be required by this chapter or, will be needed to assure that the
proposed use will be reasonably compatible with land uses normally permitted in the
surrounding area;
(3) The site for the proposed use will be served by streets and highways of adequate width and
pavement to carry the quantity and kind of traffic generated by the proposed use; and
(4) The proposed use will not adversely affect the abutting property or the permitted use
thereof
Attachment 1 includes the list of findings along with facts supporting each finding.
CONCLUSION
The facility is operating in compliance with previous conditions of approval and the Wireless
Communications Facilities Policy. The applicant has submitted a radio frequency(RF) emissions
report demonstrating that the facility will operate within federal RF emissions standards and
existing landscaping provides adequate screening for the new pole and antennas to the residences
most directly affected.
CEQA STATUS
The proposed modification is exempt from the California Environmental Quality Act (CEQA)
pursuant to Section 15301(b) of the CEQA Guidelines—Minor alteration to an existing facility.
ATTACHMENTS
1. Conditional Use Permit Findings
2. Conditions of Approval
3. Applicant's statement requesting CUP and Coverage Map
4. Wireless Communications Facilities Policy
5. Photo Simulations
6. Photographs of Existing Facility
7. Radio Frequency emissions report dated April 2, 2015
8. Site Development Plans (Planning Commission Only)
ATTACHMENT 1
ATTACHMENT 1
RECOMMEND CONDITIONAL USE PERMIT FINDINGS FOR A WIRELESS
COMMUNICATIONS FACILITY
LANDS OF THE STATE OF CALIFORNIA (AT&T MOBILE WIRELESS)
2350 PAGE MILL ROAD; FILE#208-15-ZP-SD-CUP
1. The proposed use or facility is properly located in relation to the community as a
whole,land uses, and transportation and service facilities in the vicinity.
The existing wireless communication facility is located within a freeway interchange and
provides cellular reception for the I-280 corridor and a significant portion of the northern
half of the Town. Five cellular providers use the site which is adjacent to a major arterial
road. This project will involve a minor increase in antennas on an existing monopole and
meets the requirements in the Town's Wireless Communications Facilities Policy which
prioritizes locating these facilities on non-residential properties.
2. The site..for the proposed, use is adequate in size and shape to accommodate the
proposed use and all .yards, open spaces, walls and fences, parking; loading,
landscaping, and such other features as may be required by this chapter or, will be
needed to assure that the-proposed use will be reasonably compatible with land uses
normally permitted in the surrounding area.
The existing facility is located on a portion of a 2.3 acre site within a freeway interchange
that includes a Caltrans maintenance yard and a cellular facility inclusive of a large
monopole, multiple equipment racks, and sheds screened by a cyclone fence with slats.
The equipment and pole are set back over 40 feet from the Page Mill Road right-of-way
and adjacent to the freeway. Access is provided off of Page Mill Road.
3. The site for the proposed use will be served by streets and highways of adequate
width and pavement to carry the quantity and kind of traffic generated by the
proposed use.
The site is.located on a major arterial road designed for large truck traffic and is located
within a freeway interchange resulting in no impacts to local residential streets. The
amount of traffic trips generated by the proposed project will be minimal and can easily
be accommodated by the existing roadway.
4. The proposed use will not adversely affect the abutting property or the permitted
use thereof.
The site is located within a freeway interchange and the remainder of the developed site
is a Caltrans maintenance yard. The site contains an existing wireless facility and the
visual impacts will be,minimized by matching the olive green color of the existing pole,
antennas and surrounding vegetation.
ATTACHMENT 2
ATTACHMENT 2
RECOMMEND CONDITIONS FOR A SITE DEVELOPMENT PERMIT AND
CONDITIONAL USE PERMIT FOR A WIRELESS COMMUNICATIONS FACILITY
LANDS OF THE STATE OF CALIFORNIA (AT&T MOBILE WIRELESS)
, 2350 PAGE MILL ROAD; FILE#208-15-ZP-SD-CUP
PLANNING DEPARTMENT:
1. Any changes or revisions to the telecommunications facility or its use shall require an
amendment to the applicable conditional use permit(s). Additionally, the Planning
Director may schedule a review or revocation hearing before the Planning Commission
regarding the use permit, if any condition of approval is not being met or the facility is
being used inconsistent with the approved use or in violation of Town development
codes.
2. The use permit shall expire ten (10) years from the date of approval. Renewal of the
permit must be requested in writing, with appropriate fees,prior to the expiration date.
3. The antennas, cables, and associated equipment on the monopole shall be painted to
blend with the surrounding vegetation and substantially match the color of the existing
wireless antennas, to the satisfaction of the Planning Director,prior to final inspection of
the facility.
4. The facility shall comply with the recommendations outlined in the Theoretical Radio
Frequency Emissions Compliance Report from Waterford dated April 2, 2015. Not later
than thirty (30) days after installation and initial operation of the antenna facility, and on
or prior to January 1st of each year thereafter, testing of radio frequency emissions shall
be conducted by qualified professionals and the reports of such testing shall be provided
in writing to the Planning Department, with comparison to applicable federal emission
standards. If at any time the emission levels are shown not to comply with Federal
standards, the Conditional Use Permit shall be scheduled for a revocation hearing before
the Planning Commission.
5. The applicant shall submit a signed agreement to the Town, agreeing that, should the use
be discontinued by the carrier, all facilities will be removed not later than 60 days after
discontinuance of the use or abandonment. The agreement shall be signed by the
applicant and submitted to the Town prior to acceptance of plans for building plan
check.
6. No lights shall be installed on the wireless communications facility, the monopole or on
the ground equipment.
7. AT&T or the operator of the site shall be responsible for repair or repainting of the
proposed facilities in case of vandalism or wear and must do so within 72 hours of notice
by the Town that a complaint has been received.
8. The communications facility shall comply with the Town's noise ordinance at all times.
If the Town receives a complaint of excessive noise at the facility, then the applicant shall
perform an acoustical analysis of the ground equipment to demonstrate that noise
emissions from the equipment is at or below 40db at the property line.
9. The applicant shall not cause radiation in the frequencies allocated as primary to the
amateur radio service and may be required to correct any and all future interference
problems experienced by other licensed services.
10. The slats in the cyclone fence along Page Mill Road along the front of the cellular facility
shall be replaced with dark green plastic slats and all debris and rubbish shall be removed
prior to final inspection of the facility.
ENGINEERING DEPARTMENT:
11. Any, and all, changes to the approved site plan shall first be approved by the Town
Engineering Department. No grading shall take place during the grading moratorium
(October 15 to April 15) except with prior approval from the City Engineer. No grading
shall take place within ten feet of any property line.
CONDITION NUMBER 5 SHALL BE COMPLETED AND SIGNED OFF BY THE
PLANNING DEPARTMENT PRIOR TO ACCEPTANCE OF CONSTRUCTION PLANS
FOR PLAN CHECK BY THE BUILDING DEPARTMENT.
Please refer to the Conditions of Project Approval set forth herein. If you believe that these
conditions impose any fees, dedications, reservation or other exactions under the California
Government Code Section 66000, you are hereby notified that these Conditions constitute
written notice of a statement of the amount of such fees, and/or a description of the dedications,
reservations, and other exactions. You are hereby further notified that the 90-day approval
period in which you may protest such fees, dedications, reservations, and other exactions,
pursuant to Government Code Section 66020(a), has begun. If you fail to file a protest within
this 90-day period complying with all of the requirements of Section 66020, you will be legally
barred from later challenging such exactions.
Upon completion of the construction, a final inspection shall be required to be set with the
Planning and Engineering Departments two weeks prior to final building inspection approval.
NOTE: The Site Development permit is valid for one year from the approval date. All required
building permits must be obtained within that year and work on items not requiring a building
permit shall be commenced within one year and completed within two years.
•
CCLOO450 - RF STATEMENT
The proposed modification at 2350 PAGE MILL ROAD LOS ALTOS, SANTA CLARA CA
94022, is necessary in order to improve the performance and capacity of the existing 4G LTE
network. Currently the site is configured as a two LTE carrier (channel) base station. This means
that the potential performance of:the 4G LTE network was currently not realized. Thisis
especially impactful for those who rely on the ATT network for broadband data services and who
increasingly use their mobilephones as their primary communication device (landlines to
residences have decreased significantly) and rely on their mobile phones to do more (E911,.
GPS, web access, text, etc.). Theproposed modification will provide substantial improvement in
service to residents in the area that will allow them to fully experience the advantage of ATT's
high. speed 4G LTE..
4G LTE is capable of delivering speeds up to 1.0 times faster than industry-average 3G speeds.
LTE technology also offers lower latency, or the processing time it takes to move data through a
network, such as how long it takes to start downloading a webpage or file once you've sent the
request. Lower latency helps to improve the quality of personal wireless services. What's more,
LTE uses spectrum more efficiently than other technologies, creating more space to carry data.
traffic and services and to deliver a better overall network experience. AT&T designs and builds
andp
ex p ands its wireless network as- necessary to satisfy its customer service standards, which
ensure customers receive reliable high speed data: y
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ATTACHMENT 4
TOWN OF LOS ALTOS HILLS LOS ALTOS 26379 Fremont Road
Los Altos Hills, CA 94022
Phone: (650) 941-7222 ` •1
www.losaltoshills.ca.gov CALIFORNIA
Wireless Communications Facilities Policy
Amended 10/12/2006
Code Sections
Section 10-1.703 (h)(2) of the Zoning Ordinance allows service uses, including "communications
facilities", to be permitted in the Town if a Conditional Use Permit is granted by the Planning
Commission and City Council. Section 10-1.1007 (1) of the Code outlines findings which must
be made to approve a use permit, including the proper location of the use or facility relative to
others in the vicinity,the adequacy of the site to accommodate the use, and that the facility or use
will not have an adverse effect on adjacent properties.
Intent:
The purpose of this policy is to outline the desired criteria for siting of wireless communications
facilities, generally including monopoles, related antennas, and equipment shelters. As the
Town's land use is virtually entirely residential, wireless communications facilities will be most
appropriately located on public or institutional sites existing within the Town. Colocation,
location on or near existing buildings, and landscape screening will be desired to minimize the
visual impacts of the facilities on neighbors and the public.
Policy:
1. Priorities for siting - Wireless communication facilities shall generally be located on
properties with priority as follows:
a. Town-owned properties
b. Foothill College
c. Water tanks
d. Other public or quasi-public facilities, such as schools or churches
e. Residential properties of at least ten (10) acres
2. Siting on residential parcels - Wireless communication facilities may be permitted on
properties used for residential purposes or vacant parcels intended for residential property
owner provides written consent and significant visual impacts are mitigated.
3. Colocation — Colocation of wireless communication facilities with other facilities is
encouraged to the maximum extend feasible, as long as the colocation is technologically
compatible and does not substantially increase visual impacts. The Town will generally
require as a condition of approval for any conditional use permit that the applicant permit
colocation of other facilities, subject to technological constraints and Town review.
Policy: Wireless Communication Facilities
Page 2
3a. Applications for colocation on an existing wireless communications facility shall be subject
to an administrative review provided that the following requirement is met:
• The colocated antennas and ground equipment shall be mounted or installed
within an existing tower, building, or structure where the physical appearance of
the existing facility is not altered to accommodate the additional antennas and
equipment.
4. Landscape screening and color - Landscape screening shall be required by the Town to
minimize the visual impacts of wireless communication facilities. Poles, antennas, and
equipment buildings should be painted to blend with the surrounding environment and/or
buildings to further minimize visual impacts.
5. Environmental review - A Negative Declaration will typically be prepared for review of
proposed wireless communication facilities, with special attention to the visual impacts of the
facilities. Categorical exemptions may be used where facilities are colocated with or would be
minimal additions to existing structures, with negligible additional visual impact.
6. Antenna master plans—Any applicant for a wireless communication facility site shall submit
applications, to the best of their knowledge, for all sites anticipated to be required by the
carrier for a three (3) to five (5) year period, and the request shall be reviewed by the Planning
Commission and the City Council as a master plan application.
7. Terms of permits and abandonment of sites — Conditional use permits for wireless
communications facilities shall be established for periods not to exceed five (5) years, at
which time renewal of the permit must be requested by the applicant. More frequent review of
the operation of the permit may be made a condition of approval. Approval will also require a
written agreement from the applicant that, should the use be discontinued by the carrier, all
facilities will be removed not later then ninety (90) days after discontinuance of the use or
abandonment. Such a provision shall also be included in any lease with the Town for use of
Town lands for wireless communications facilities. The Town may require bonding or other
surety to assure the removal of such facilities.
8. Wireless communication firms shall, at the time of application for permits, demonstrate efforts
which have been mad to inform neighboring residents of the proposed facilities, such as
conducting meetings, or mailing fact sheets and/or letters, etc...to neighbors.
9. The Planning Director is authorized to reduce or waive permit fees for any wireless
communications facility that is proven to expand wireless coverage in the Town and is
structurally capable of colocation.
10. The Planning Director is authorized to administratively approve portable wireless
communications facilities also known as cell on wheels or COWs on certain properties as
specified in Policy #1 on a temporary basis.
ATTACHMENT 5
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Alrik WATERFORD 2015.04-05 08:41:01
111/44, COMPLIANCE—FROM START TO StGNASrENED
A KLL��++
,JUN 0 2 ? \
Theoretical Radio Frequency Emissions Compliance - -M PtekAllis
Caldwell Consulting, Inc. on Behalf of AT&1V ,l
Site Name: Page Mill - 1-280 Site Structure Type: Monopole
Site ID# 10095736 Latitude: N37-23-25.80
Address: 2350 Page Mill Road Longitude: W122-9-49.80
Los Altos, CA 94022 County: Santa Clara
Building Photo
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Report Information
Report Writer: Chase Warren Report Date: April 2, 2015
Compliance Statement
Site Compliance Statement: Based on the information collected, this site Will Be Compliant with FCC Rules
and Regulations upon implementation of the recommendations set forth in Section 8 of this report.
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sealed 2apr2015
411
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
Table of Contents
1 General Summary 3
Site Summary 3
2 Antenna Inventory 4
3 Predicted Emission Levels 5
3.1 Prediction Summary 5
4 Appendix A: Technical Framework 10
5 Appendix B: Qualifications of Waterford Consultants, LLC 13
6 Appendix C: RoofMasterTM 14
7 Appendix D: Statement of Limiting Conditions 15
8 Compliance Requirements Diagram 16
RF-15-0050 Page 2
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703.596.1022
101/1
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
1 General Summary •
Site Summary
Caldwell Consulting, Inc. has contracted Waterford Consultants, LLC to conduct a
Radio Frequency Electromagnetic Compliance assessment of the Page Mill - 1-280
site located at 2350 Page Mill Road, Los Altos, CA 94022. The compliance
framework is derived from the FCC Rules and Regulations for preventing human
exposure in excess of the applicable MPE (Maximum Permissible Exposure) limits.
An overview of the applicable FCC Rules and analysis guidelines is presented in
Appendix A.
The subsequent sections contain information regarding the radio
telecommunications equipment installed at this site and the surrounding environment
with regard to RF Hazard compliance. This report represents worst-case predictive
modeling based on the information provided by the client. Recommendations to
meet or maintain compliance are provided in Section 8 of this report.
Waterford Consultants, LLC recommends that this report be shared with site
management so they are aware of transmitting antennas on site and can restrict
access to authorized personnel.
Here is a listing of the files used for this report:
- GSM Carrier Count.xlsx
- 3701871486_10095736_AE01_031715_90%2D'S_(REVO)_CCL00525 T-1.pdf
- SAN-FRANCISCO-SACRAMENTO_SAN-FRANCISCO CNU0525 2016-LTE-
Next-C a rri er_LT E-3 C_km 477 n_3 701871486_1009 573 6_132 91_03-09-
2014_P l an n ed-Ap proved_v4.00.pdf
RF-15-0050 Page 3
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703.596.1022
4/1k
WATERFORD
Site Name:Page Mill-1-280
Site ID:10095736
2 Antenna Inventory
Antenna Bottom of
Horizontal Antenna Total TX Centerline Antenna
Frequency Beam Ant Gain ERP Power X Y Main Main Level
Ant# Operator Antenna Make Antenna Model - Type (MHz) Az Downtilt width (ft) (dBd) Swatts)SWatts) (ft) (ft) Level(ft) (ft)
1 AT&T Mobility ANDREW SBNHH-1D65B OODT Panel 2100 20 0 63 6.0 16.33 5148 120 12 58 64 61
2 AT&T Mobility KATHREIN 8001076500dt Panel 850 20 0 65 6.3 13.42 1758 80 13 55 64 61
2 AT&T Mobility KATHREIN 8001076500dt Panel 1900 20 0 62 6.3 16.30 3412 80 13 55 64 61
3 AT&T Mobility KATHREIN 8001076500dt Panel 700 20 0 68 6.3 12.64 1102 60 14 52 64 61
3 AT&T Mobility KATHREIN 8001076500dt Panel 1900 20 , 0 62 6.3 16.30 3412 80 14 52 64 61
4 AT&T Mobility ARC Wireless DLA VR 07 360 OX Omni 850 0 0 360 2.1 2.85 135 70 11 58 67 66
5 AT&T Mobility CCI HPA-45R-BUU-H6-K OODT Panel 2100 120 2 49 6.0 15.95 4721 120 13 51 64 61
6 AT&T Mobility KMW ET-X-CH-45-16-45-18-IR-AT 02DT Panel 850 120 0 65 5.7 12.35 1374 80 10 49 64 61
6 AT&T Mobility KMW ET-X-CH-45-16-45-18-IR-AT OODT Panel 1900 120 0 65 5.7 13.85 1941 80 10 49 64 61
7 AT&T Mobility KMW ET-X-CH-45-16-45-18-IR-AT 00DT Panel 700 120 2 67 5.7 11.65 877 60 8 49 64 61
7 AT&T Mobility KMW ET-X-CH-45-16-45-18-IR-AT 000T Panel 1900 120 2 65 5.7 13.85 1941 80 8 49 64 61
8 AT&T Mobility ANDREW SBNHH-1D65B OODT Panel 2100 190 0 63 6.0 16.33 5148 120 4 50 64 61
9 AT&T Mobility KATHREIN 8001076500dt Panel 850 190 0 65 6.3 13.42 1758 80 3 53 64 61
9 AT&T Mobility KATHREIN 8001076500dt Panel 1900 190 0 62 6.3 16.30 3412 80 3 53 64 61
10 AT&T Mobility KATHREIN 80010765 00dt Panel 700 190 0 68 6.3, 12.64 1102 60 2 56 64 61
10 AT&T Mobility KATHREIN 80010765 00dt Panel 1900 190 0 62 6.3 16.30 3412 80 2 56 64 61
11 AT&T Mobility ANDREW SBNHH-1D65B OODT Panel 2100 290 0 63 6.0 16.33 5148_ 120 4 58 64 61
12 AT&T Mobility KATHREIN 8001076500dt Panel 850 290 0 65 6.3 13.42 1758 80 7 59 64 61
12 AT&T Mobility KATHREIN 8001076500dt , Panel 1900290 0 , 62 6.3 16.30 3412 80 , 7 59 64 61
13 AT&T Mobility KATHREIN 80010765 00dt Panel 700 ,290 0 68 6.3 12.64 1102 60 9 60 64 61
13 AT&T Mobility KATHREIN 80010765 00dt Panel 1900 290 0 62 6.3 16.30 3412 80 9 60 64 61
Note:Waterford Consultants has assumed transmission parameters for Unknown RF emitters based on similar installations found at other radio communications sites.Generic
antenna models have been used where existing antenna part numbers or radiation patterns are not available. The frequencies presented in this table may have been assumed in
order to represent the approximate band of operation and to support a worst-case calculation of power density.
RF-15-0050 Page 4
Waterford Consultants,LLC•201 Loudoun Street Southeast Suite 300•Leesburg, Virginia 20175.703.596 1022
14111
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
3 Predicted Emission Levels
The following plots show the spatial average predicted power density levels in the
reference plane indicated as a percentage of the General Public Limit. Please note
that 100% of the General Public Limits corresponds to 20% of the Occupational
Limit.
The reference plane for the plot is the site level, as indicated in the caption. For
example, "Avg 10 to 16 Feet" refers to the spatial average predicted power density
level between 10 and 16 feet above the site level. Plots are produced for each
accessible level. Levels that are not accessible will not be shown. Only accessible
areas in a plot are relevant. Areas not accessible or in free space, off the edge of a
site or equipment penthouse, do not affect compliance.
3.1 Prediction Summary
Power density decreases significantly with distance from any antenna. The panel-
type antennas to be employed at this site are highly directional by design and the
orientation in azimuth and mounting elevation, as documented, serve to reduce the
potential to exceed MPE limits at any location other than directly in front of the
antennas. For the accessible areas in the vicinity of these antennas, the following
assessments are provided:
Ground Level
Cumulative MPE Assessment
- Below General Population limits
AT&T Mobility Contribution
- Contribution does not exceed 5% of General Population limit
10' Building Roof Level
Cumulative MPE Assessment
- Below General Population limits
AT&T Mobility Contribution
- Contribution does not exceed 5% of General Population limit
RF-15-0050 Page 5
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703.596.1022
411/1k
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
Predictive Modeling Diagrams
.,r ,r
Percent MPE Legend I � 2. ,-,
's
Q
02-5% f`
,0 5%f
Public Limits
10 foot grid size
(Avg.0 to 6 Feet)
Carrier Cob(Code
•AT&T Mobility
• GROUND LEVEL-0'
1
I 17 r---
I - Li IU 1
J
'OUND LEVEL-C 1 1
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' l__I L
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. ,..„... .„. , .
, • -,
- , A _______ ______
t
The reference plane for the plot is the ground level-5%General Public
RF-15-0050 Page 6
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703.596.1022
WATERFORD
w..:.9^1. .41114 SIII.�uofu
Site Name: Page Mill - I-280
Site ID: 10095736
I —4:41:
Percent MPE Legend .v �_ I I
,00x.soox 1 i (
p 500 .5pppy, I I '
Pubic Lmts
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The reference plane for the plot is the ground level.
RF-15-0050 Page 7
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300. Leesburg, Virginia 20175. 703596.1022
41111
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
I I
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The reference plane for the plot is the 10' building level-5%General Public
RF-15-0050 Page 8
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703.596.1022
111/1
WATERFORD
Site Name: Page Mill - 1-280 Adeif
Site ID: 10095736
I
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The reference plane for the plot is the 10' building level.
RF-15-0050 Page 9
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703.596.1022
401
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
4 Appendix A: Technical Framework
The FCC requires licensees to assure that persons are not exposed to
radiofrequency electromagnetic energy power densities in excess of the applicable
MPE (Maximum Permissible Exposure) limit. These rules apply to both Occupational
Personnel and the General Population. Applicable FCC rules are found at 47 C.F.R.
§ § 1.1307(b)(3) and 1.1310. The FCC rules define two tiers of permissible
exposure differentiated by the situation in which the exposure takes place and/or the
status of the individuals who are subject to exposure.
General Population I uncontrolled exposure limits apply to those situations
in which persons may not be aware of the presence of electromagnetic
energy, where exposure is not employment-related, or where persons cannot
exercise control over their exposure.
Occupational / controlled exposure limits apply to situations in which
persons are exposed as a consequence of their employment, have been
made fully aware of the potential for exposure, and can exercise control over
their exposure.
Maximum Permissible Exposure ("MPE") is defined in OET 65 as being 100% of the
exposure limit for the situation or tier of permissible exposure. For any area in
excess of 100% General Population MPE, access controls with appropriate RF
alerting signage must be put in place and maintained to restrict access to authorized
personnel. Subject to other site security requirements, Occupational Personnel
trained in RF safety and equipped with personal protective equipment designed for
safe work in the vicinity of RF may be granted access. Controls such as physical
barriers to entry imposed by locked doors, locked passageways, or other access
control mechanisms may be supplemented by alarms that alert the individual and
notify site management of a breach in access control. Controls may include
administrative policies and procedures requiring personal protective equipment (e.g.
RF personal monitor), proof of RF training to obtain site access cards, presentation
of appropriate RF awareness training certifications to security personnel or other
measures designed to prevent uncontrolled access.
RF alerting signs are not necessarily required, and by FCC guidelines, alone do not
constitute compliance, posting of the appropriate NOTICE, CAUTION, or WARNING
signs at areas of concern is considered good practice. The signs below are
examples of signs meeting FCC guidelines.
RF-15-0050 Page 10
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703 596 1022
4111
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
NOTICE ACAUTION
0110
Radb frequency fields:lambBeyondt'�is uWnt: Beyond this point.
this paint may Ostend 111e FCC Radio troyuoncy flouts at this alto Radio frequency fielda of tars note
general pub exposure limit. may oxcood FCC Moe for human exceed the FCC rules for human
exposure_ exposure.
i weal W tle,sre.r.
I., .
r.,r••.aa,.asr.,i
M*Wile nee'mown .e.IW d.an..to twi.h.A A r..Mr plcNnn be ar/.-.x,.r,a00 101 rr,:r
.eaenn
•
•
Power density decreases significantly over a short distance from any antenna.
Specifically with respect to directional panel antennas, the design, oriented in
azimuth and elevation as documented, reasonably precludes potential to exceed
MPE limits at any location other than directly in front of the antenna. Areas in front
of the antenna that are restricted by barriers, would require climbing or are otherwise
beyond the reach of a standing individual of average height are not considered
accessible. Analysis or measurement of instantaneous energy levels is performed
for use as proof of compliance with FCC rules and regulations applicable to non-
occupational persons, those individuals who are not authorized to access portions of
the antenna support structure above ground level. To assess time-average
exposure for occupational personnel working within secured areas of the site, on the
supporting structure, or in the immediate proximity of the antenna equipment is a
separate study requiring detailed ergonomic information.
FCC regulations regarding Radiofrequency radiation exposure, expressed in 47 CFR
§ 1.1310 are further clarified with respect to the value of 5% of exposure limits for
the subject transmitters in the following section of 47 CFR § 1.1307 (b):
(3) In general, when the guidelines specified in § 1.1310 are
exceeded in an accessible area due to the emissions from multiple
fixed transmitters, actions necessary to bring the area into
compliance are the shared responsibility of all licensees whose
transmitters produce, at the area in question, power density levels
that exceed 5% of the power density exposure limit applicable to
their particular transmitter or field strength levels that, when
squared, exceed 5% of the square of the electric or magnetic field
strength limit applicable to their particular transmitter. Owners of
transmitter sites are expected to allow applicants and licensees to
take reasonable steps to comply with the requirements contained In
§ 1.1307(b) and, where feasible, should encourage co-location of
transmitters and common solutions for controlling access to areas
where the RF exposure limits contained in § 1.1310 might be
exceeded.
RF-15-0050 Page 11
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175 e 703.596.1022
Aft
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
Following these FCC requirements, predictive modeling has been performed to
evaluate power density resulting from client transmitters as a percentage of the
power density MPE limit applicable to their transmitters. These results are presented
in Section 8.
The site should be routinely inspected and this or a similar report updated with any
changes to the RF environment including:
• Adding new antennas
• Removing of any existing antennas
• Change in the radiating power or number of RF emitters
Waterford Consultants recommends coordinating with all wireless tenants before
performing services in front of or near any transmitting antennas.
RF-15-0050 Page 12
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703.596.1022
40111
WATERFORD
Site Name: Page Mill- 1-280
Site ID: 10095736
5 Appendix B: Qualifications of Waterford Consultants, LLC
With more than 100 team-years of experience, Waterford Consultants, LLC
[Waterford] provides technical consulting services to clients in the Radio
Communications and antenna locating industry. Waterford retains professional
engineers who are placed in responsible charge of the processes for analysis.
Waterford is familiar with 47 C.F.R. § § 1.1307(b)(3) and 1.1310 along with the
general Rules, Regulations and policies of the FCC. Waterford work processes
incorporate all specifications of FCC Office of Engineering and Technology, Bulletin
65 ("OET65"), from the website: www.fcc.gov/oet/rfsafety and follow criteria detailed
in 47 CFR § 1.1310 "Radiofrequency radiation exposure Limits".
Within the technical and regulatory framework detailed above, Waterford developed
tools according to recognized and generally accepted good engineering practices.
Permissible exposure limits are band specific, and the Waterford computerized
modeling tools correctly calculate permissible exposure based on the band(s)
specified in the input data. Only clients and client representatives are authorized to
provide input data through the Waterford web portal. In securing that authorization,
clients and client representatives attest to the accuracy of all input data.
Waterford Consultants, LLC attests to the accuracy of the engineering calculations
computed by those modeling tools. Furthermore, Waterford attests that the results
of those engineering calculations are correctly summarized in this report.
RF-15-0050 Page 13
Waterford Consultants, LLC•201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703.596.1022
Oil
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
6 Appendix C: RoofMasterTM
RoofMasterTM is the software package that Waterford Consultants created to model
RF environments associated with multiple emitters where the potential exists for
human exposure. Based on the computational guidelines set forth in OET Bulletin
65 from the Federal Communications Commission (FCC), RoofMasterTM considers
the operating parameters of specified RF sources to predict the overall Maximum
Permissible Exposure possible at a given location. These theoretical results
represent worst-case predictions as emitters are assumed to be operating at 100%
duty cycle.
From the FCC document:
"The revised OET Bulletin 65 has been prepared to provide assistance in
determining whether proposed or existing transmitting facilities, operations or
devices comply with limits for human exposure to radiofrequency (RF) fields
adopted by the Federal Communications Commission (FCC). The bulletin
offers guidelines and suggestions for evaluating compliance."
http://transition.fcc.gov/Bureaus/Engineeri ng_Technology/Documents/bulletins/oet65/oet65.pdf
RF-15-0050 Page 14
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703.596.1022
4011
WATERFORD
Site Name: Page Mill - 1-280
Site ID: 10095736
7 Appendix D: Statement of Limiting Conditions
Waterford Consultants, LLC has been supplied data pertaining to RF environment
for this site. Waterford Consultants will not be responsible for matters of a legal
nature that affect the site or property. The property has been analyzed under the
premise that it is under responsible ownership and management and our client has
the legal right to conduct business at this facility.
Due to the complexity of some wireless sites, Waterford Consultants has created
this report utilizing best industry practices and due diligence. Waterford Consultants
cannot be held accountable or responsible for anomalies or discrepancies due to
actual site conditions (i.e., mislabeling of antennas or equipment, inaccessible cable
runs, inaccessible antennas or equipment, etc.) or information or data supplied by
Wireless Carrier, the site manager, or their affiliates, subcontractors or assigns.
Waterford Consultants has provided the results of a computer generated model in
this MPE Site Compliance Report to show approximate dimensions of the site, and
the model results is included to assist the reader of the compliance report to
visualize the site area, and to provide supporting documentation for Waterford
Consultants' recommendations.
Waterford Consultants will not be responsible for any existing conditions or for any
engineering or testing that might be required to discover whether adverse safety
conditions exist. Because Waterford Consultants is not an expert in the field of
mechanical engineering or building maintenance, this MPE Site Compliance Report
must not be considered a structural or physical engineering report.
Waterford Consultants obtained information used in this MPE Site Compliance
Report from sources that Waterford Consultants considers reliable and
believes them to be true and correct. Waterford Consultants does not assume
any responsibility for the accuracy of such items that were furnished by other
parties.
RF-15-0050 Page 15
Waterford Consultants, LLC• 201 Loudoun Street Southeast Suite 300• Leesburg, Virginia 20175. 703 596 1022
4* WATERFORD
Site Name:Page Mill-1-280
Site ID:10095736
8 Compliance Requirements Diagram
iN=Cttvr.�u:.
Caution(Tower)
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ACAUTION
p Information 1
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INFORMATION
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Caution
(Tower) Gate Location-Information 1 sign posted at gate
Tower Base Location-Caution(Tower)sign posted at the base of the tower