1-16-14 resub materials.pdfs rn a t I'll, n k
January 15, 2014 1
Mr. Michael Clugston
Senior Planner
City of Edmonds Development Services
1215th Avenue North
Edmonds, WA 98020
RE: Letter of Incomplete Application
Dear Mr. Clugston:
REC.',tENVED
JAN 16 2014
W,-'VEI-OPMENT SERVICES
COUNTER
Please see the enclosed, additional information as requested in your November 18, 2013
Letter of Incomplete Application. These include:
1. SENA Checklist
2. Photosimulations — before and after
3. Noise Report
4. RF coverage maps — before and after
5. FCC Emissions Report — NIER report
fou have any questions regarding this additional information.
George Johnston, Smartlink for Ami,
206.218.6549
Enclosures
100 VVA �' ;30()
co
:
�
�
C
w&
11"lly"I'll
c"a
CIA
15
Uj
to
killamm
Lou
CO
a-oustics
Stev,a,t •M B4O
December 16, 20,13
Vickie Stenberg
LDC, Inc.
14201 NE 200th St, Ste 100
Woodinville, WA 98072
Re: Acoustical Report — AT&T SN2886 Flaines Wharf
Site: 6908174 1h Street SW, Edmonds, WA 98026
Dear Vickie,
H1 CEIVED
JAN 16 2014
L)EVELOOM ENT SL--JIVIUE,�
COUNTER
This report presents a noise survey performed in the immediate vicinity of the proposed
A-r&,r telecommunications facility at 6908 174" Street SW in Edmonds, Washington. This
noise Survey extends from the proposed equipment to the nearest properties. The purpose
of this report is to document the existing conditions and the impacts of the acoustical
changes due to the proposed equipment. This report contains data on the existing and
predicted noise environments, impact criteria and an evaluation of the predicted sound levels
as they relate to the criteria.
Ambient Conditions
Existing ambient sound levels of the site were measured on December 16, 2013 with a
Larson -Davis 820 spectrum analyzer sound level meter. Measurements were conducted as
close to the proposed location as possible and the property lines in accordance with the
State of Washington code for Maximum Environmental Noise Levels WAC 173-60-020. The
average ambient noise level was 54 dBA primarily due to noise from local vehicle traffic. The
weather during the measurements was overcast with dry roads. I
Code Requirements
The site is located within the City of Edmonds Zoning jurisdiction on property designated with
a Residential zoning, Al of the receiving properties are Residential.
The proposed new equipment consists of equipment Support cabinets, which are expected to
run 24 hours a day.
Under Edmonds Municipal Code Chapter 5,30,040 noise from equipment on a Residential
property is limited as follows:
Residential Receiver: Noise is limited to 55 dBA during daytime hours. During nighttime
hours, between the hours of 10 p.m. and 7 a.m., the maximum permissible sound level is
decreased by 10 decibels, Since the support cabinets are expected to operate 24. hours a
day, they rnUSt meet the 45 dBA nighttime limit,
The equipment will be located within an equipment room. The room will be conditioned by a
• system. The proposed condensing units will consist of (2) • PUY-A36NHA • units. According to the manufacturer, the units produce a Sound Pressure Level of 48
dBA at 3 ft.
To predict equipment noise levels at the receiving properties, this survey used the methods
established by AHRI Standard 2752010 and ASHRAE 2011 HVAC Applications Handbook.
Application factors such as location, height, and reflective surfaces are accounted for in
predicting the sound level at the nearest receivers.
The equipment cabinets will to be located on a concrete pad at grade. The nearest receiving
property is a residential property located west of the equipment cabinets. The predicted
sound level at the nearest property is shown below in Table 2 below.
Table I
Application Factors and Predicted Noise Levels
for the Proposed Equipment
1 Combined Sound Pressure Level at 3 ft (dBA), L 51
2 Distance Factor (DF) -13
Inverse -Square Law (Free Field): DF = 20*log (d1/d2) —OL fit
3 New Equipment Sound Pressure Level at Receiver, Lpr 38
(Add lines 1 and 3)
Sincerely,
SSA Acoustics, LLP
��Ian Burt, P.E.
ASSOCIATE PARTNER
WAS
I -i N,53
NAL
q 1111,11 piq��Ipqiipi 11
RECENVED
JAN 16 20111 Prepared for
LDC Corp.
00JELOPMENT SERVICES
COUNTER
Prepared by
Tom Manley
ADCOMM Engineering Company
Reviewed by
Joe Blaschka, Jr. PE
ADCOMM Engineering Company
ADCOMM Engineering Company
Bridging the Gap Between Operations and Technology(li)
w
Contents......................................................................................................................................... iii
Acronyms and Abbreviations .................... a................................................................................... iv
Summary......................................................................................................................................... 1
RegulatoryBackground.................................................................................................................. 1
SiteEvaluation................................................................................................................................ 4
ADCOMM ENGINEERING COMPANY I COMMUNICATIONS CONSULTING page di
111111111I�� 111111II1111111111� 111111II 11111111111111111I 11111��
ut,
AGL
above ground level
ERP
effective radiated power
EIRP
Equivalent Isotropically Radiated Power
FCC
Federal Communications Commission
MPE
maximum permissible exposure
RF
radio frequency
ADCOMM ENGINEERING COMPANY I COMMUNICATIONS CONSULTING Page iv
Calculations were done for the ATT SN2886 Haines Wharf site. The site address is 6908174th
Street SW, Edmonds, WA. The project replaces an existing utility pole with one adaptable for
wireless antennas. New UMTS 850 and LTE 700 services are being installed. There are no co -
located carriers.
Antenna model information and ERP levels are taken from the RF Data Sheet,
WA_SN2886_NewBuild_3801627140_10576799_ 7192013_v1.1. Preliminary construction
drawings, Rev. 3 dated 9/18/13 were also provided.
The antennas and their patterns were known and used for the calculations. The maximum
downtilt in any given sector was used in the calculations for each service as a worst-case.
The calculations show that the maximum ground -level exposure is .537% of the MPE for General
Population/ Uncontrolled Exposure occurring approximately 350 -ft from the site at ground level
from the position of a sector. The site meets the FCC requirements for General Population
Exposure.
Regulatory Background
The procedures for calculating the RF power densities are taken from "Evaluating Compliance
with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, OET
Bulletin 65, August 1997." FCC Rules and Regulations further describe requirements for
compliance in CFR 47 §1.1310, "Radiofrequency Radiation Exposure Limits." The formula
used for calculation is Equation 9 of OET65 on page 21:
33.4 ERP
R
Where: S= power density in µW/cm2
ERP= power in watts
R= distance in meters
Where this equation is applied in a spreadsheet, the vertical attenuation pattern of the antenna is
taken into account.
The FCC limits for maximum permissible exposure (MPE) are shown graphically in Figure 1
and in tabular form in Table 1. The exposure limit differs depending on frequency due to the
variable rate of RF absorption of the human body at different frequencies.
FCC Limits for Maximum Permissible Exposure (MPE)
Plane -wave Equivalent Power Density
OccupationaUContro1led— Exposure
®®m - General Population/Uncontrolled Exposure J
0.03 0.3 3 30 300 3,000 30,000 j 300,000
1.34 1,500 100,000
Frequency (MHz)
Figure 1. FCC Limits for MPE
Although the label "radiation' is often used in this situation, a distinction is made between
ionizing radiation and non -ionizing radiation such as RF. Ionizing radiation is so energetic that
it literally breaks electrons away from atoms creating an ion. Electromagnetic radiation is only
capable of this at frequencies of 1015 Hz,106 GHz, or higher. TI -ds is the realm of some UV light, x
rays, gamma rays, cosmic rays, and particles produced in radioactive decay.
The frequencies of interest here are well below those of ionizing radiation, well within the RF
spectrum, and universally recognized as non -ionizing electromagnetic radiation (VIER). The
effects of NIER are thermal. The energy impinging on the human body causes heat to be
generated in body tissue. The effect of this heating has biological effects above certain power
levels. The curve above for general population/ uncontrolled exposure is typically 2 percent of
the level at which thermal effects begin to be seen.
The antennas typically used in the service found at this site are directional so that most of the RF
energy emitted by the antennas is concentrated in a limited field of view. In particular, energy is
usually directed toward the horizon with appreciable attenuation below the antenna.
I
(A) Limits for Occupational/Controlled Exposure
Frequency Electric Field Magnetic Field
Range Strength (E) Strength (H)
(MHz) (V/m) (A/m)
Power Density
(S)
(mW/cm z)
Averaging Time
JEJ2, IH 12 or S
(minutes)
0.3-3.0 614 1.63
(100)* 6
3.0-30 1842/f 4.89/f
(900/f2)* 6
30-300 61.4 0.163
1.0 6
300-1500
f/300 6
1500-100,000
5 6
(8) Limits for General Population/Uncontrolled Exposure
Frequency
Electric Field Magnetic Field
Power Density
Averaging Time
Range
Strength (E) Strength (H)
(S)
JEJ2, IHIz or S
(MHz)
(V/m) (A/m)
(mW/cm2)
(minutes)
0.3-1.34
614 1.63
(100)*
30
1.34-30
824/f 2.19/f
(180/f2)*
30
30-300
27.5 0.073
0.2
30
300-1500
f/1500
30
1500-100,000
1.0
30
f = frequency in MHz
�ZrTXI
*Plane -wave equivalent power density
NOTE 1: occupationa//contro/%d limits apply in situations in which persons are exposed as a consequence of their
employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure.
Limits for occupational/controlled exposure also apply in situations when an individual is transient through a location where
occupational/controlled limits apply provided he or she is made aware of the potential for exposure.
NOTE 2: Genera/popu/ation/uncontro/%dexposures apply in situations in which the general public may be exposed, or in
which persons that are exposed as a consequence of their employment may not be fully aware of the potential for exposure or
cannot exercise control over their exposure.
N
The antennas centers -of -radiation are reduced by 6 -ft to account for head height and are so
adjusted from the centers -of -radiation shoyvn on the RF Data Sheet. The spreadsheets use the
planned power per service, the actual radiation patterns for each service, and the maximum
downtilt for each service. The resulting %MPE values for ground -level are collected on a
composite spreadsheet. Calculation spreadsheets are included in the Attachment section.
The site is described as a utility pole replacement so no other areas of exposure are characterized
other than ground -level exposure.
The maximum %MPE on the ground occurs at a distance of 350 -ft from the base of a sector
(projected to ground level) with a level that is .537% of the FCC maximum exposure guidelines
for an uncontrolled area. The site meets the FCC requirements for General
Population/ Uncontrolled Exposure.
M
[iii ��� ��, ■��a���li■�l
Calculation spreadsheets
4 -Dec -13
Site:
Haines Wharf
Freq(MHz):
ADCOMM Engineering Company
Non -Ionizing Electromagnetic Radiation Calculations
XMT(dBm):
N/A
Ant. Gain:
N/A
Ant. Model: ---Composite
ground
XMT(Watts):
N/A
Ant. C.L. (ft):
N/A
MPE: NIA
ERP(Watts):
Client:
N/A
ATT
ITrans Loss:
NIA
CenteMine
distance from
antenna (ft)
UMTS 850
°%MPE
700
°
LTE /oMPE
Composite On -
ground %MPE
25
0.072
0.002
0.074
50
0.366
0.010
0.376
75
100
0.091
0,119
0,075
0.025
0,166
0.144
125
0.082
0.047
0.130
150
175
0.060
0.057
0.073
0,025
0.133
0.062
200
0.056
0.001
0.057
225
0.179
0.042
0.220
250
0.291
0,152
0.444
275
0.305
0.127
0.432
300
0.325
0,174
0.499
325
0.312
0.210
0.522
350
0.303
0.234
0.637
375
400
0.265
0.293
0.205
0.217
0.469
0.510
425
0.260
0.192
0.453
450
0.233
0.172
0.405
475
0.263
0.169
0.433
500
0.238
0.153
0.391
5250.216
550
0.248
0.139
0.133
0.355
0.381
575
0.227
0.122
0.349
600
0.209
0.112
0.320
625
0.192
0.103
0.295
650
0.178
0.095
0.273
675
0.131
0.086
0.218
700
0.122
0.080
0.202
725
750
775
0.114
0.106
0,100
0.075
0.070
0,066
0.189
0.176
0.165
800
0.094
0.062
0.155
825
850
0.088
0.083
0.058
0.055
0.146
0.137
875
0.062
0,047
0.109
900
0.059
0.044
0.103
925
0.056
0.042
0,098
950
0.053
0.040
0.093
975
1000
0.050
0.048
0.038
0.036
0.088
0.084
1025
1050
0.045
0.043
0.034
0.033
0.080
0.076
1075
1100
0.041
0.039
0.031
0.030
0.072
0.069
4-Dec-13
ADCOMM Engineering Company
Non-Ionizing Electromagnetic Radiation Calculations
Site:
Haines Wharf Freq(MHz):
UMTS 850
XMT(dBm):
N/A Ant. Gain:
N/A
Ant. Model:
- -
OOT
XMT(Watts):
N/A Ant. C.L. (ft):
52
MPE:
485 uW/cm2
ERP(Watts):
Client:
1020 Trans Loss:
ATT
N/A
Comment:
50 electrical downtilt
Center -line
distance from
antenna (ft)
Path length (ft)
Centerline
signal level
(mW/cm2)
Pattern
angle from
antenna
Pattern
attenuation
(dB)
On-ground
signal level
(mW/cm2)
On-ground %MPE
(Uncontrolled area)
25
58
0.58752
64
25
0.000349
0.072
50
72
0.14688
46
16
0.001774
0.366
75
91
0.06528
35
20
0.000441
0.091
100
113
0,03672
27
17
0.000577
0.119
125
135
0.02350
23
17
0.000400
0.082
150
159
0.01632
19
17
0.000291
0.060
175
200
183
207
0.01199
0.00918
17
15
16
15
0.000277
0.000272
0.057
0.056
225
250
231
255
0.00725
0.00588
13
12
9
6
0.000867
0.001414
0.179
0,291
275
280
0.00486
11
5
0.001482
0.305
300
305
0.00408
10
4
0.001577
0.325
325
329
0.00348
9
3.5
0.001514
0.312
350
354
0.00300
8
3
0.001470
0.303
375
379
0.00261
8
3
0.001284
0.265
400
425
403
428
0,00230
0.00203
7
7
2
2
0,001424
0.001264
0.293
0.260
450
475
453
478
0.00181
0.00163
7
6
2
1
0.001129
0.001278
0.233
0.263
500
503
0.00147
6
1
0.001154
0.238
525
528
0.00133
6
1
0.001048
0.216
550
553
0.00121
5
0
0,001203
0.248
575
577
0.00111
5
0
0.001102
0.227
600
602
0.00102
5
0
0.001013
0,209
625
627
0.00094
5
0
0.000933
0.192
650
652
0.00087
5
0
0.000864
0,178
675
677
0.00081
4
1
0.000636
0.131
700
702
0.00075
4
1
0.000592
0.122
725
750
727
752
0.00070
0.00065
4
4
1
1
0.000552
0.000516
0.114
0.106
775
800
777
802
0.00061
0.00057
4
4
1
1
0.000483
0.000454
0.100
0.094
825
827
0.00054
4
1
0.000427
0,088
850
875
852
877
0.00051
0.00048
4
3
1
2
0.000402
0.000302
0.083
0,062
900
902
0.00045
3
2
0.000285
0.059
925
927
0,00043
3
2
0.000270
0.056
950
975
1000
1025
951
976
1001
1026
0.00041
0.00039
0.00037
0.00035
3
3
3
3
2
2
2
2
0.000256
0.000243
0.000231
0.000220
0.053
0,050
0.048
0.045
1050
1051
0.00033
3
2
0.000210
0.043
1075
1076
0.00032
3
2
0.000200
0.041
1100
1101
0.00030
3
2
0.000191
0,039
4 -Dec -13
ADCOMM Engineering Company
Non -Ionizing Electromagnetic Radiation Calculations
Site: Haines Wharf Freq(MHz):
ILTE 700
XMT(dBm): N/A
Ant. Gain:
N/A
Ant. Model:
ALU 3JR52703AAM
XMT(Watts): N/A
Ant. C.L. (ft):
152
MPE:
486 uW/cm2
ERP(Watts): 547
Trans Loss:
N/A
Comment:
50 electrical downtilt
Client: ATT
Center -line
Centerline
Pattern
Pattern
On -ground
On -ground %MPE
distance from
Path length (ft)
signal level
angle from
attenuation
signal level
antenna (ft)
(mW/cm2)
antenna
(dB)
(mW/cm2)
(Uncontrolled area)
25
58
0.31507
64
38.6
0.000008
0.002
50
72
0.07877
46
28.8
0.000050
0.010
75
91
0.03501
35
18.1
0.000366
0.075
100
1 113
0.01969
27
21.1
0.000120
0.025
125
135
0.01260
23
16.7
0.000230
0.047
150
159
0.00875
19
13.4
0.000357
0.073
175
183
0,00643
17
16.8
0.000123
0.025
200
207
0.00492
15
30.3
0.000004
0.001
225
231
0.00389
13
12.6
0.000203
0.042
250
1 255
0.00315
12
8.8
0.000741
0.152
275
280
0.00260
11
6.1
0.000617
0.127
300
305
0.00219
10
4
0.000846
0.174
325
329
0.00186
9
2.5
0.001022
0.210
350
354
0.00161
8
1.4
0.001140
0.234
375
379
0.00140
8
1.4
0.000995
0.205
400
403
0.00123
7
0,6
0.001054
0.217
425
428
0.00109
7
0.6
0.000935
0.192
450
453
0.00097
7
0.6
0.000836
0.172
475
478
0.00087
6
0.2
0.000824
0.169
500
503
0.00079
6
0.2
0.000744
0.153
525
528
0.00071
6
0.2
0.000676
0.139
550
553
0.00065
5
0
0.000645
0.133
575
577
0.00060
5
0
0.000591
0.122
600
602
0.00055
5
0
0.000543
0.112
625
627
0.00050
5
0
0.000501
0.103
650
652
0.00047
5
0
0.000463
0.095
675
677
0.00043
4
0.1
0.000420
0.086
700
702
0.00040
4
0.1
0.000391
0.080
725
727
0.00037
4
0.1
0.000364
0.075
750
752
0.00035
4
0.1
0.000340
0.070
775
777
0.00033
4
0.1
0.000319
0.066
800
802
0.00031
4
0.1
0.000299
1 0.062
825
827
0,00029
4
0.1
0.000282
0.058
850
852
0.00027
4
0.1
0.000265
0.055
875
877
0.00026
3
0.5
0.000228
0.047
900
902
0.00024
3
0.5
0.000216
0.044
925
927
0.00023
3
0.5
0.000204
0.042
950
951
0.00022
3
0.5
0.000194
0.040
975
976
0.00021
3
0.5
0.000184
0.038
1000
1001
0.00020
3
0.5
0.000175
0.036
1025
1026
0.00019
3
0.5
0.000167
0.034
1050
1051
0.00018
3
0.5
0.000159
0.033
1075
1076
0,000E7E��
0.5
0.000152
0.031
1100
1101
0.000
0.5
0.000145
0.030
Printed on
Recycled and
Recyclable
Paper