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MCUP 10-01; T-Mobile SD06224A Innovative Time; Conditional Use Permit (CUP) (9)
I I I I I I I I I I I I I I I I I I I DePratti Incorporated Attention: Becky Siskowski 13948 Calle Bueno Ganar Jamul, California 91935 EILAR ASSOCIATES, INC. "Acoustical & Environmental Consulting Services Since 1974" 539 Encinitas Boulevard, Suite 206, Encinitas, CA 92024 www.eilarassociates.com • info@eilarassociates.com Phone: 760-753-1865 or 800-439-8205 • Fax: 760-753-2597 March 26, 2009 RECEIVED JL 0 6 2009 . CITY OF CARLSBAD PLANNING DEPT Job #A90301 N1 SUBJECT: NOISE IMPACT ANALYSIS FORT -MOBILE WIRELESS FACILITY "PALOMAR AIRPORT" WIRELESS EQUIPMENT CABINETS-CARLSBAD, CALIFORNIA At your request, we have conducted a noise evaluation of the proposed wireless project at the proposed T -Mobile Wireless communications facility known as Palomar Airport. A site visit was conducted on Thursday, March 12, 2009. The measurement conditions were partly cloudy skies, temperature in the mid 60's, and low humidity, with little to no measurable wind. An acoustical analysis was performed to determine the noise impacts the proposed equipment will have on surrounding properties. Project Location The subject property is located at 5858 Edison Place, in the City of Carlsbad, California. The Assessor's Parcel Number (APN) is 212-092-23. The owner of the property is the Mickey Novak Separate Trust. For a graphical representation of the site, please refer to the Vicinity Map, Assessor's Parcel Map, Satellite Aerial Photograph, and Topographic Map provided as Figures 1 through 4, respectively. Project Description The proposed project includes the replacement of existing T-Mobile equipment cabinets with one Ericsson RBS 2106 Equipment Cabinet, and one Ericsson RBS 3018 Equipment Cabinet, to be mounted on an existing concrete slab on-grade located within an existing equipment enclosure. Also proposed is the replacement of existing T-Mobile antennas with four newT-Mobile antenna sectors of two antennas each. The existing T-Mobile Wireless communications facility was previously owned by Pacific Bell Mobile Services, as shown in the provided plans. There are also existing COX Communications equipment cabinets located on a slab adjacent to the proposed T-Mobile equipment For additional project details and equipment positioning, please refer to the site plans provided in Attachment A. Noise and Sound Level Descriptors Noise level or sound level values presented herein are expressed in terms of decibels (dB), or dBA for A-weighting, to approximate the hearing sensitivity of humans. Time-averaged noise levels are expressed by the metric LEO. The CNEL is a 24-hour average, where sound levels during evening hours of 7 p.m. to 10 p.m. have an added 5 dB weighting, and sound levels during nighttime hours of 10 p.m. to 7 a.m. have an added 10 dB weighting. This is similar to the Day-Night sound level, LoN, I I I I I I I I I I I I I I I I I I I DePratti Inc., Attention: Becky Siskowski Equipment Cabinets-T-Mobile Palomar Airport Page 2 March 26, 2009 which is a 24-hour average with an added 10 dB weighting on the same nighttime hours but no added weighting on the evening hours. Sound levels expressed in CNEL are always based on the A-weighted decibel. These metrics are used to express noise levels for both measurement and municipal ~egulations, for land use guidelines, and for enforcement of noise ordinances. Further explanation can be provided upon request. Sound Pressure is the actual noise experienced by a human or registered by a sound level instrument. When Sound Pressure is used to describe a noise source it must specify the distance from the noise source to provide complete information. Sound Power, on the other hand, is a specialized analytical method to provide information without the distance requirement, but it may be used to calculate the sound pressure at any desired distance. Applicable Noise Standards The noise regulations applicable to this project are limited, and are contained within the City of Carlsbad Noise Guidelines Manual, and the Noise Element to the General Plan, which states that noise · levels outside the Palomar Airport noise impact area shall be controlled to 60 CNEL at residential property lines, and 45 CNEL at the interior of residences. Another relevant document is the City of Carlsbad Council Policy Statement on Wireless Communications Facilities, dated September 21, 2001. According to these regulations, the noise limits for a single-family residential zone are 65 CNEL, and 45 CNEL for exterior and interior noise levels, respectively. The proposed project site is zoned commercial, as are neighboring properties to the north, south, east and west. As no property line noise regulations could be found for commercial zones, property line limits of 60 CNEL were used for this analysis. Exterior noise levels should not exceed this noise limit at neighboring property lines. Measurement Equipment The following equipment was used at the site to measure noise levels: • Larson Davis Model720, Type 2 Sound Level Meter, SIN 0219, with microphone & windscreen • · Larson Davis Model CA 150, Type 2 Calibrator, SIN 2056 • · Larson Davis Model 824, Type 1 Sound Level Meter, SIN 0343, with microphone & windscreen • Larson Davis Model CA250, Type 1 Calibrator, SIN 2625 • Distance measurement wheel, digital camera The sound level meters were field-calibrated immediately prior to all noise level measurements and checked afterwards, to ensure accuracy. All sound level measurements conducted and presented in this report, in accordance with the regulations, were made with sound level meters that conform to the American National Standards Institute specifications for sound level meters (ANSI Sl.4-1983, R2001 ). All instruments are maintained with National Bureau of Standards traceable calibration, per the manufacturers' standards. On-Site Noise Level Measurement An on-site inspection was conducted at 12:00 p.m. on Thursday, March 12, 2009 to verify conditions and the existing noise environment. An ambient noise measurement was made over the course of fifteen minutes. Please refer to Table 1 for the ambient noise measurement and related conditions. Eilar Associates, Inc. • 539 Encinitas Boulevard, Suite 206, Encinitas, CA 92024 • 760-753-1865 • Fax 760-753-2597 I I I I I I I I I I I I I I I I I I I DePratti Inc., Attention: Becky Siskowski Equipment Cabinets - T -Mobile Palomar Airport Date Time Conditions Measured Ambient Noise Level Thursday, March 12, 2009 12:00 p.m. Page 3 March 26, 2009 Partly cloudy skies, little to no measurable winds, temperature in Jhe mid 60's, with low humidity 56.3 dBA LEa During noise level measurements, the microphone position was placed approximately five feet above the existing grade elevation, approx_imately 35 feet from the existing equipment on site. The primary contributors to this noise level were vehicle traffic on Palomar Airport Road, Camino Vida Roble and Owens Avenue, and aircraft overflight from McClellan-Palomar Airport. Noise levels from existing COX Communications equipment cabinets were measured at approximately one foot from the cabinets, using the Larson Davis Model 824 Sound Level Meter. The measured overall noise level for a one-minute measurement was 59.9 dBA. The octave data is summarized in Table 2. Octave Frequency (Hz) At 1' from Cabinets 63 125 58.8 56.1 250 500 52.3 48.7 Similar Equipment Noise Emission Measurements 1K 2K 4K 8K 52.7 43.6 37.4 24.7 59.9 To calculate the expected equipment noise levels from the proposed T-Mobile Wireless facility installation, measured noise levels of the same model equipment cabinets, Ericson RBS 2106, were used. This data was obtained during noise level measurements taken at 3.00 p.m. on April 8, 2004, at a Cingular wireless installation located at 2190 Carmel Valley Road in Del Mar (City of San Diego), California. The property's Assessors Parcel Number of this operational facility is 301-081-26-00. The single RBS 2106 equipment cabinet is mounted on a 5-foot square concrete pad, located on the eastern side of an existing commercial office building. The unit was mounted approximately 6 inches in front of the building wall. The following measurement is typical of these units where they are mounted adjacent a wall and may be assumed as a worst case with wall reflection. The similar equipment noise emission levels were measured with a Larson Davis Model 824, Type 1 Sound Level Meter, Serial #342 (with windscreen) and Larson Davis Model CA200, Type 1 Calibrator, Serial #2181. The sound level meter was field-calibrated immediately prior to the noise measurements and checked afterwards, to ensure accuracy. The Larson Davis 824 sound level meter was mounted on a tripod in front of the RBS 2106 cabinet, at a distance of approximately five feet. The measured overall noise level for a one-minute measurement was 53.1 dBA. The octave data is summarized in Table 3. Eilar Associates, Inc. • 539 Encinitas Boulevard, Suite 206, Encinitas, CA 92024 • 760-753-1865 • Fax 760-753-2597 I I I I I I I I I I I I I I I I I I I DePratti Inc., Attention:-Becky Siskowski Equipment Cabinets - T -Mobile Palomar Airport Octave Frequency (Hz) Noise Level (dB) 63 64.4 125 61.2 250 500 55.3 47.0 1K 2K 4K 45.9 42.2 44.0 8K. 34.6 Page 4 March 26, 2009 53.1 According to the technical product description for the RBS 3018, it produces no more noise than the RBS 2106. The same noise data provided in Table 2 will be used for the RBS 3018 cabinet. For additional equipment information, please refer to Attachment B: Manufacturer Data Sheets. Project Related Noise Impacts Noise created by the proposed equipment cabinets on site was approximated using the noise data shown above in Table 3. Table 4 shows the calculated noise levels created by the proposed units at surrounding property lines. Apparent elevation differences were taken into account. Calculations made for the southeastern property line represent the nearest property line across Owens Avenue to the southeast. Detailed calculations can be found in Attachment C. Location: Distance (ft) Noise Level (dBA) Northeast Property Line 140 27.1 Southeast Property Line 150 26.5 Southwest Property Line 145 26.7 Northwest Property Line 185 24.7 Noise created by the existing COX Communications equipment cabinets on site was approximated using the noise data shown in Table 2. Table 5 shows noise levels created by the existing COX Communications equipment at all surrounding property lines. Detailed calculations can be found in Attachment C: Equipment Noise Calculations. , · :.> ';. , · , :-.. ·: ~ · u ~~~( ·;r\ .r: '. ;~;:(.::~-. :z.:. .. . ;;<·>·f/ :r~--~-·:~.;<, ~ ,;.<.w·, /u ; ;;~,, j;,h:.,i-J~-· z-#'"'t·4 >L . .,: ::·. · Lbtf:;:~· ·:.,s> ~~~ ~·::~·'7>~¥~:;:I,:;(!;;;V.i.i4>'YJ~:t;::. ' .. ·~ ·.~·:,:~ . <h :'>0: ·::. · \: < :. · . '.· ./ Table 5._ Calculated'~oise~J_ev~I~_Crealed by ;Existi,~g·,CO~:Eq~Jpme'!ta~;~.y~r~un~i~g.~-~~perty Lines,:,: ' v ' . ,. . ' '.·.·.. ' . . ·"' ·.' ' .... ••.• •, .. · '"" .··~··· .. ' . Location Distance (ft) Noise Level (dBA) Northeast Property Line 140 17.5 Southeast Property Line 150 16.9 Southwest Property Line 145 17.2 Northwest Property Line 185 15.2 With the current project design, noise levels created by the existing COX equipment cabinets and proposed T-Mobile equipment cabinets meet City of Carlsbad nighttime noise regulations at all neighboring property lines. Eilar Associates, Inc. • 539 Encinitas Boulevard, Suite 206, Encinitas, CA 92024 • 760-753-1865 • Fax 760-753-2597 I I I I I I I I I I I I I I I I I I I DePratti Inc., Attention: Becky Siskowski Equipment Cabinets-T-Mobile Palomar Airport Page 5 March 26, 2009 The combined noise levels of the proposed and existing equipment cabinets are shown in Table 6. Supporting calculations can be found in Attachment C. Prop<;>sed Cabinet Existing Cabinet Combined Noise Location No1se Levels N · L I (dBA) L I (dBA) (dBA) o1se eves.. · . eves . Northeast Property Line 27.1 17.5 27.6 Southeast Property Line 26.5 16.9 27.0 Southwest Property Line 26.7 17.2 27.2 Northwest Property Line 24.7 15.2 25.2 Conclusion With the current design, the proposed T-Mobile Wireless facility will be in compliance with all applicable City of Carlsbad noise limits. This analysis is based upon a current worst-case scenario of anticipated, typical equipment for this type of wireless facility. Substitution of equipment with higher noise emission levels may invalidate the recommendations of this study. EILAR ASSOCIATES, INC. Jonrrothers, Acoustical consultant FIGURES 1. Vicinity Map 2. Assessor's Parcel Map 3. Satellite Aerial Map 4. Topographic Map ATTACHMENTS A. Site Plans B. Manufacturer Data Sheets C. Equipment Noise Calculations Eilar Associates, Inc. • 539 Encinitas Boulevard, Suite 206, Encinitas, CA 92024 • 760-753-1865 • Fax 760-753-2597 I I I I I I I I I I I I I I I I I I I FiGURES ------ ..... -·· I I Eilar Associates, Inc. 539 Encinitas Boulevard, Suite 206 Encinitas, California 92024 760-753-1865 -- ... - - - Vicinity Map Job #A90301N1 - - ., --- - - Figure 1 · ....... ' ' \, "" ... .. "\ \.\ \"-\ .. \ ..... \\, 'I ',I I I II I - ------------------- Eilar Associates, Inc. 539 Encinitas Boulevard, Suite 206 Encinitas, California 92024 760-753-1865 Assessor's Parcel Map Job # A90301 N1 SanG IS San Diego County Assessor's Parcel Number: 212-092-23-00 No Scale Figure 2 ------------------- Eilar Associates, Inc. 539 Encinitas Boulevard, Suite 206 Encinitas, California 92024 760-753-1865 Satellite Aerial Photograph Job# A90301 N1 Figure 3 • .. ·· ... · -- -- - - Eilar Associates, Inc. 539 Encinitas Boulevard, Suite 206 Encinitas, California 92024 760-753-1865 --- - - Topographic Map Job # A90301 N1 - - ---- -- Figure 4 I I I I I I I I I I I I I I I I I I I ATTACHMENT A Site Plans I I I I I I I I I I I I I I I I I I I ( PAC~F~C ·PALOMAR AIRPORT Innovative Time 5858 EDISON PLACE, CARLSBAD ABBREVIATIONS • --. ... .................. '" ---.. ..... -"""' "" _ ........... . .. -"" """"" .. ..,.... -~ "' --L ... ..,._..,.. . 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I'RElJII. co I<Ev.tW ~/1-$/'18 C11Y CO SUIMTTAL SHEET ll1lE co RU£1.5[0 FOR CllNSTRUCllON 0P£Rli!T1Il) 0 D.I'CTRIC.IL P£RVIT ONLY ELEVATIONS ORA~N BY: DG C!l£Cl(£0 !h': DA JOe NO. ll7362.42 SHffitlO. A-3 I I I I I I I I I I I I I I I I I I I ATTACHMENT B Manufacturer Data Sheets I I I I I I I I I I I I I I I I I I I RBS 2106 is a high capacity, compact outdoor macro radio base station supporting up to twelve transceivers per cabinet. It is possible to build one, two and three sector configurations including dual band configurations in one cabinec. Being the latest member in the RBS 2000 family, RBS 2106 is to date the most powerful outdoor RBS in the world. Keeping the successful characteristics of the existing RBS 2000 portfolio and improving functionality as well as operation and maintenance makes the RBS 2106 a very cost-effective solution for growing GSM operators. The RBS 2000 family supports a wide range of applica- tions ranging fron1 extreme coverage to extretne capacity. Being aRBS 2000 member guarantees coexistence with the installed base ofRBS 200 and RBS 2000 products. Ericsson's synchronization based BSS feamres ensure that transceivers from different generations of radio base stations can easily form common cells. Operators can therefore bridge the past with the future. By making existing sites futureproof, investments are protected while migrating to 3G. RBS 2106 The GSM Macro Outdoor Base Station Part of the grow-on-site concept Since it is becoming increasingly difficult to find new base station sites, it is of great interest to remain on the existing sites as long as possible. Site space is often a limiting factor for capacity growth. The powerful RBS 2106, included in Ericsson's grow-on-site toolbox, addresses this problem. On many sites, two or more existing cabinets can be replaced by one RBS 2106. This is of major importance, since it makes it possible to reuse the space to rollout WCDMA equipment. The RBS 2106 will pave the way for WCDMA. Also interesting for new locations, the RBS 2106 offers a complete solution in stand-alone cabinet which rapidly can be implemented outdoors. All the units to run the RBS are included in this single cabinet, there is no need for an extra produce. I I I I I I I I I I I I I I I I I I I Doubled capacity-superior performance -same footprint The 12-transceiver RBS 2106 cabinet has the same foorprinc as RBS 2102, but has doubled the capacity, thanks to the new double-capacity transceivers and combiners. The RBS 2106 has better output power rhanthe current RBS 2000 products, which are the best on the market today. The improved radio performance means increased site-to-site distance, and therefore, fewer sites. Another example of a cost saving feature is 121 km Extended Range. The RBS 2106 comes with a configura- tion switch unit, the CXU, and two extremely flexible combiners. Examples of configurations supported by the Filter Combiner (CDU-F) are 3x4, 2x6, 1x12 and dual band 8+4 in one cabinet. CDU-F supports up to 12 transceivers on one dual-polarized ancenna. The other combiner (CDU-G) can be configured in two modes: capacity mode and coverage mode,making it very flexible. In coverage mode, the output power from the CDU-G is increased, making it perfect for rural sites or when fast rollout is required at a minimum cost. Prepared for the future The RBS 2000 family is prepared for GSM data services, including General Packet Radio Service (GPRS) and High Speed Circuit Switched Data (HSCSD) including 14.4 kbit/s times lots. To meet the operators' need for faster datacom solutions, RBS 2106 supports EDGE. Technical specification for RBS 21 06 A powerful Distribution Switch Unit (DXU) and fast internal buses guarantee full EDGE support. With the optional BSS feature RBS 2000 synchronization, it is possible to have up to 32 transceivers in one cell. With the optional BSS feature RBS 200 and RBS 2000 in the same cell, it is possible to expand an existing RBS 200 cell with RBS 2106, and thereby introduce EDGE through plug-in units. Key features o Six double transceiver units (dTR U); that is, 12 transceivers o Filter and hybrid combining one, two, or three sectors in one cabinet o Excellent RF performance o Synthesized and baseband frequency hopping o Supports 12 transceiver EDGE on all timeslots o Supports GSM 800, 900, 1800 and 1900 MHz o Extended Range 121 km o Duplexer and TMA support for all configurations o Four transmission ports supporting up to 8 Mbit/s o Optional built-in transmission equipment transmission o Prepared for GPS assisted positioning services o Internal or external battery backup o Simple co-siting with WCDMA equipment o Supports most common power systems 0 Hardware independent of transmission interface o Prepared for outdoor environment (wide range of temperatures I humidity) Frequency band: Tx: Rx: GSM 800, E-GSM 900, P-GSM 900, GSM 1800, GSM 1900 869-894, 925-960, 1805-1880, 1930-1990 MHz 824-849, 880-915,1710-1785, 1850-1910 MHz Number of transceivers (per cabinet): Number of sectors: Transmission inter£1.ce: Dimension (H x W x D): Weight without batteries: Power into antenna feeder: Receiver sensitivity: Power supply: I nee grated battery backup: External battery backup: Operating temperature: Weatherproofing: Tclefonaktiebolaget LM Ericsson SE-126 25 Stockholm Sweden Telephone +46 8 719 0000 Fax +46 8 18 40 85 www.<?ricsson .con1 2-12 l-3 1.5 Mbit/s (Tl), 2 Mbit/s (E1), 75, 100, 120 Ohm 1614 X 1300 X 940 mm (631/2 X 511/5 X 37 in.) including installation frame 560 kg (1235 lbs.) 33 WI 45.2 dBm (GSM 800 I GSM 900) 25 WI 44.0 dBm (GSM 1800 I GSM 1900) With TCC activated, add 2.5 dBm to above values -110,5 dBm (dynamic, without TMA and diversity gain) 200-250V AC, 50/60 Hz 30, 90 or 130 minutes when TM space is used Up to 6 hours (optional) -33°C-+40°C (-27°F-+ l04°F) Eco cooling -33°C-+45°C (-27°F-+ 113°F) Combo cooling Min level IP55 according to IECIEN 60529 Min level 3R according to UL 50 and CSA C22.2 No. 94 AE/LZT 123 6493 R2 ©Telefonaktiebolaget LM Ericsson 2003 I I I I I I I I I I I I I I I I I I I ERICSSON Technical Product Description RBS 3018 DESCRIPTION I I I I I I I I I I I I I I I I I I I 5 5.1 5.2 5.3 5.4 Environment Environment This section contains information about environmental data and requirements. Operational Environment The 3418 baseband subrack is intended for use in a non operator access area with an ambiant temperature of +5-+50°C. The RU/FU kit is intended for use in a non operator access area with an ambient temperature of +5-+55°C. The RRUs are intended for ambiant temperature of -33-+50°C. For more information about the climate inside RBS 2106, see RBS Product Description, 129/1551-LZA 701 0001. For more information the operating conditions for the RRU, see Technical Product, Description, RRU, 72/1551-105 102/1. Ground Vibration The components of RBS 3018 installed inside the RBS 2106 satisfy the earthquake protection according to IEC 600 68-2-57. Acoustic Noise The acoustic noise for the RBS 3018 components inside RBS 2106 does not add any more noise to the RBS 2106 than is presented for RBS 2106. See RBS Product Description, 129/1551-LZA 701 0001. For the accoustic noise for the RRUs, see Technical Product, Description, RRU, 72/1551-105 102/1. Materials The materials in the RBS are managed through the Ericsson lists of banned and restricted substances, based on legal and market requirements. 1/1551-COH 109 2085 Uen B 2007-03-07 13 I I I I I I I I I I I ATTACHMENT C Equipment Noise Calculations I I I I I I 1 I I I I I I I I I I I I I I I I I I I EILAR ASSOCIATES ACOUSTICAL CONSULTING Sound Power Level to Sound Pressure Level Analysis Distances Source Height: hs = 241.0 (ft) Receiver Height: hR= 252.0 (ft) Source to Receiver Distance: dsR = 140.0 (ft) Path Calculation Source to Receiver Direct Path Distance: r = 140.4 (ft) Sound Power to Sound Pressure Calculations Project Name: T-Mobile: Palomar Airport Project Number: A90301 N1 Date: 2/17/2009 Source Description: T-Mobile Equipment Path Description: Northeast Property Line Octave Band 63 125 250 500 1000 2000 4000 8000 TOTAL (Hz) Sound Power Level: Lw 79.1 75.9 70.0 61.7 60.6 56.9 58.7 49.3 81.3 (dB) Sound Pressure Level: Lp = Lw-20 /og(r)-0.75 35.4 A-Weighting -26.2 A-Weighted Sound Pressure Level 9.2 Combined Sound Pressure Level at Receiver 32.2 -16.1 16.1 Total Sound Pressure Level: 37.6 (dB) 24.1 2 26.3 18.0 16.9 13.2 15.0 5.6 -8.6 -3.2 0 1.2 0.5 -1.1 17.7 14.8 16.9 14.4 15.5 4.5 Total A-Weighted Sound Pressure Level: #of sources Combined Sound Pressure Level: Combined A-Weighted Sound Pressure Level: 40.6 (dB) at 140.4 (ft) 27.1 (dBA) at 140.4 (ft) 37.6 (dB) at 140.4 (ft) (dB) 24.1 (dBA_l at 140.4 (ft\ 539 Encinitas Blvd. Suite 206, Encinitas, CA 92024 • 760-753-1865 ·Fax 760-753-2597 • info@eilarassociates.com I I I I I I I I I I I I I I I I I I I EILAR ASSOCIATES ACOUSTICAL CONSULTING Sound Power Level to Sound Pressure Level Analysis Distances Source Height: hs = 241.0 (ft) Receiver Height: hR = 230.0 (ft) Source to Receiver Distance: dsR = 150.0 (ft) Path Calculation Source to Receiver Direct Path Distance: r = 150.4 (ft) Sound Power to Sound Pressure Calculations Project Name: T-Mobile: Palomar Airport Project Number: A90301 N1 Date: 2/17/2009 Source Description: T-Mobile Equipment Path Description: Southeast Property Line Octave Band 63 125 250 500 1000 2000 4000 8000 TOTAL (Hz) Sound Power Level: Lw 79.1 75.9 70.0 61.7 60.6 56.9 58.7 49.3 81.3 (dB) Sound Pressure Level: Lp = Lw-20 /og(r)-0.75 34.8 31.6 25.7 17.4 A-Weighting -26.2 -16.1 -8.6 -3.2 A-Weighted Sound Pressure Level 8.6 15.5 17.1 14.2 Combined Sound Pressure Level at Receiver Total Sound Pressure Level: 37.0 (dB) Total A-Weighted Sound Pressure Level: 23.5 #of sources 2 Combined Sound Pressure Level: 40.0 (dB) at 150.4 (ft) Combined A-Weighted Sound Pressure Level: 26.5 (dBA) at 150.4 (ft) 16.3 12.6 14.4 0 1.2 0.5 16.3 13.8 14.9 5.0 -1.1 3.9 37.0 23.5 (dB) at 150.4 (ft) (dB) (dBA) at 150.4 (ft) 539 Encinitas Blvd. Suite 206, Encinitas, CA 92024 • 760-753-1865 • Fax 760-753-2597 • info@eilarassociates.com I I I I I I I I I I I I I I I I I I I EILAR ASSOCIATES ACOUSTICAL CONSULTING Sound Power Level to Sound Pressure Level Analysis Distances Source Height: hs = 241.0 (ft) Receiver Height: hR = 225.0 (ft) Source to Receiver Distance: dsR = 145.0 (ft) Path Calculation Source to Receiver Direct Path Distance: r = 145.9 (ft) Sound Power to Sound Pressure Calculations Project Name: T-Mobile: Palomar Airport Project Number: A90301 N1 Date: 2/17/2009 Source Description: T-Mobile Equipment Path Description: Southwest Property Line Octave Band 63 125 250 500 1000 2000 4000 8000 TOTAL (Hz) Sound Power Level: Lw 79.1 75.9 70.0 61.7 60.6 56.9 58.7 49.3 81.3 (dB) Sound Pressure Level: Lp = Lw-20 /og(r)-0.75 35.1 A-Weighting -26.2 A-Weighted Sound Pressure Level 8.9 Combined Sound Pressure Level at Receiver 31.9 -16.1 15.8 Total Sound Pressure Level: 37.3 (dB) 23.7 2 26.0 17.7 16.6 12.9 14.7 5.3 -8.6 -3.2 0 1.2 0.5 -1.1 17.4 14.5 16.6 14.1 15.2 4.2 Total A-Weighted Sound Pressure Level: #of sources Combined Sound Pressure Level: Combined A-Weighted Sound Pressure Level: 40.3 (dB) at 145.9 (fl) 26.7 (dBA) at 145.9 (ft) 37.3 (dB) at 145.9 (ft) (dB) 23.7 (dBA) at 145.9 (ft) 539 Encinitas Blvd. Suite 206, Encinitas, CA 92024 • 760-753-1865 ·Fax 760-753-2597 • info@eilarassociates.com I I I I I I I I I I I I I I I I I I I EILAR ASSOCIATES ACOUSTICAL CONSULTING Sound Power Level to Sound Pressure Level Analysis Distances Source Height: hs = 241.0 (ft) Receiver Height: hR = 254.0 (ft) Source to Receiver Distance: dsR = 185.0 (ft) Path Calculation Source to Receiver Direct Path Distance: r = 185.5 (ft) Sound Power to Sound Pressure Calculations Octave Band 63 125 250 500 Sound Power Level: Lw 79.1 75.9 70.0 61.7 Sound Pressure Level: Lp = Lw-20 /og(r)-0.75 33.0 29.8 23.9 15.6 A-Weighting -26.2 -16.1 -8.6 -3.2 A-Weighted Sound Pressure Level 6.8 13.7 15.3 12.4 Combined Sound Pressure Level at Receiver Total Sound Pressure Level: 35.2 (dB) Total A-Weighted Sound Pressure Level: 21.6 #of sources 2 Combined Sound Pressure Level: 38.2 (dB) at 185.5 (ft) Combined A-Weighted Sound Pressure Level: 24.7 (dBA) at 185.5 (ft) Project Name: T-Mobile: Palomar Airport Project Number: A90301 N 1 Date: 2/17/2009 Source Description: T-Mobile Equipment Path Description: Northwest Property Line 1000 2000 4000 8000 TOTAL (Hz) 60.6 56.9 58.7 49.3 81.3 (dB) 14.5 10.8 12.6 3.2 35.2 (dB) at 0 1.2 0.5 -1.1 (dB) 14.5 12.0 13.1 2.1 21.6 (dBA) at 185.5 (ft) 185.5 (ft) 539 Encinitas Blvd. Suite 206, Encinitas, CA 92024 • 760-753-1865 • Fax 760-753-2597 • info@eilarassociates.com I I I I I I I I I I I I I I I I I I I EILAR ASSOCIATES ACOUSTICAL CONSULTING Sound Power Level to Sound Pressure Level Analysis Distances Source Height: hs = 241.0 (ft) Receiver Height: hR = 252.0 (ft) Source to Receiver Distance: dsR = 140.0 (ft) Path Calculation Source to Receiver Direct Path Distance: r = 140.4 (ft) Sound Power to Sound Pressure Calculations Octave Band Sound Power Level: Lw Sound Pressure Level: Lp = Lw-20 /og(r)-0.75 A-Weighting A-Weighted Sound Pressure Level Combined Sound Pressure Level at Receiver Total Sound Pressure Level: 63 125 65.3 63.0 21.6 19.3 -26.2 -16.1 -4.6 3.2 25.6 (dB) 17.5 1 250 62.9 19.2 -8.6 10.6 500 56.0 12.3 -3.2 9.1 Total A-Weighted Sound Pressure Level: #of sources Combined Sound Pressure Level: Combined A-Weighted Sound Pressure Level: 25.6 (dB) at 140.4 (ft) 17.5 (dBA) at 140.4 (ft) Project Name: T-Mobile: Palomar Airport Project Number: A90301 N1 Date: 2/17/2009 Source Description: COX Equipment Path Description: Northeast Property Line 1000 2000 4000 8000 TOTAL (Hz) 58.3 48.2 42.4 31.3 69.2 (dB) 14.6 4.5 0.0 0.0 25.6 (dB) at 140.4 (ft) 0 1.2 0.5 -1.1 (dB) 14.6 5.7 0.5 -1.1 17.5 (dBA) at 140.4 (ft) 539 Encinitas Blvd. Suite 206, Encinitas, CA 92024 • 760-753-1865 ·Fax 760-753-2597 • info@eilarassociates.com I I I I I I I I I I I I I I I I I I I EILAR ASSOCIATES ACOUSTICAL CONSULTING Sound Power Level to Sound Pressure Level Analysis Distances Source Height: hs = 241.0 (ft) Receiver Height: hR = 230.0 (ft) Source to Receiver Distance: dsR = 150.0 (ft) Path Calculation Source to Receiver Direct Path Distance: r = 150.4 (ft) Sound Power to Sound Pressure Calculations Octave Band 63 Sound Power Level: Lw 65.3 Sound Pressure Level: Lp = Lw-20 /og(r)-0.75 21.0 A-Weighting -26.2 A-Weighted Sound Pressure Level -5.2 Combined Sound Pressure Level at Receiver 125 63.0 18.7 -16.1 2.6 Total Sound Pressure Level: 25.0 (dB) 16.9 1 250 62.9 18.6 -8.6 10.0 500 56.0 11.7 -3.2 8.5 Total A-Weighted Sound Pressure Level: #of sources Combined Sound Pressure Level: Combined A-Weighted Sound Pressure Level: 25.0 (dB) at 150.4 (ft) 16.9 (dBA) at 150.4 (ft) Project Name: T-Mobile: Palomar Airport Project Number: A90301 N1 Date: 2/17/2009 Source Description: COX Equipment Path Description: Southeast Property Line 1000 2000 4000 8000 TOTAL (Hz) 58.3 48.2 42.4 31.3 69.2 (dB) 14.0 3.9 0.0 0.0 25.0 (dB) at 150.4 (ft) 0 1.2 0.5 -1.1 (dB) 14.0 5.1 0.5 -1.1 16.9 (dBA) at 150.4 (ft) 539 Encinitas Blvd. Suite 206, Encinitas, CA 92024 • 760-753-1865 • Fax 760-753-2597 • info@eilarassociates.com I I I I I I I I I I I I I I I I I I I EILAR ASSOCIATES ACOUSTICAL CONSULTING Sound Power Level to Sound Pressure Level Analysis Distances Source Height: hs = 241.0 (ft) Receiver Height: hR = 225.0 (ft) Source to Receiver Distance: dsR= 145.0 (ft) Path Calculation Source to Receiver Direct Path Distance: r = 145.9 (ft) Sound Power to Sound Pressure Calculations Octave Band Sound Power Level: Lw Sound Pressure Level: Lp = Lw-20 /og(r)-0.75 A-Weighting A-Weighted Sound Pressure Level Combined Sound Pressure Level at Receiver Total Sound Pressure Level: 63 125 65.3 63.0 21.2 18.9 -26.2 -16.1 -5.0 2.8 25.2 (dB) 17.2 1 250 62.9 18.8 -8.6 10.2 500 56.0 11.9 -3.2 8.7 Total A-Weighted Sound Pressure Level: #of sources Combined Sound Pressure Level: Combined A-Weighted Sound Pressure Level: 25.2 (dB) at 145.9 (ft) 17.2 (dBA) at 145.9 (ft) Project Name: T-Mobile: Palomar Airport Project Number: A90301 N1 Date: 2/17/2009 Source Description: COX Equipment Path Description: Southwest Property Line 1000 2000 4000 8000 TOTAL (Hz) 58.3 48.2 42.4 31.3 69.2 (dB) 14.2 4.1 0.0 0.0 25.2 (dB) at 145.9 (ft) 0 1.2 0.5 -1.1 (dB) 14.2 5.3 0.5 -1.1 17.2 (dBA) at 145.9 (ft\ 539 Encinitas Blvd. Suite 206, Encinitas, CA 92024 • 760-753-1865 • Fax 760-753-2597 • info@eilarassociates.com I I I I I I I I I I I I I I I I I I I EILAR ASSOCIATES ACOUSTICAL CONSULTING Sound Power Level to Sound Pressure Level Analysis Distances Source Height: hs = 241.0 (ft) Receiver Height: hR = 254.0 (ft) Source to Receiver Distance: dsR = 185.0 (ft) Path Calculation Source to Receiver Direct Path Distance: r = 185.5 (ft) Sound Power to Sound Pressure Calculations Octave Band 63 125 250 500 Sound Power Level: Lw 65.3 63.0 62.9 56.0 Sound Pressure Level: Lp = Lw-20 /og(r)-0.75 19.1 16.8 16.7 9.8 A-Weighting -26.2 -16.1 -8.6 -3.2 A-Weighted Sound Pressure Level -7.1 0.7 8.1 6.6 Combined Sound Pressure Level at Receiver Total Sound Pressure Level: 23.2 (dB) Total A-Weighted Sound Pressure Level: 15.2 #of sources 1 Combined Sound Pressure Level: 23.2 (dB) at 185.5 (ft) Combined A-Weighted Sound Pressure Level: 15.2 (dBA) at 185.5 (ft) Project Name: T-Mobile: Palomar Airport Project Number: A90301 N1 Date: 2/17/2009 Source Description: COX Equipment Path Description: Northwest Property Line 1000 2000 4000 8000 TOTAL (Hz) 58.3 48.2 42.4 31.3 69.2 (dB) 12.1 2.0 0.0 0.0 23.2 (dB) at 185.5 (ft) 0 1.2 0.5 -1.1 (dB) 12.1 3.2 0.5 -1.1 15.2 (dBA) at 185.5 (ft) 539 Encinitas Blvd. Suite 206, Encinitas, CA 92024 • 760-753-1865 • Fax 760-753-2597 • info@eilarassociates.com