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HomeMy WebLinkAboutMiscellaneous - 122 FOSTER STREET 7/10/2017 1 i 1 • mental, AT&T Wireless C1 U n! Verizon Wireless Milt 40 11*40 Assessment Wireless Communication Facility 122 Foster Street North Andover, Massachusetts J LJI r 10, 7017 Prepired For: INS Vill-sit.) 'Wri"eless 30 Congress St., lith floor°Boston, C�`A 0221tl Prepared l3 : t" Y Modeling Specialties ✓i ��Modeling1 `10 Maple Road Westl'ard, MA 01886 :ev'i 'l s 1 ENVIRONMENTAL NOISE EVALUATION Varsity Wireless proposes to install a wireless communications facility in North Andover, Massachusetts to support personal wireless communication in the area, Two 1 E carriers, AT&T and Verizon Wireless are anchor tenants for' the 111cility. There will be available space Im as many as Live (J) total car'r'iers at this site. 'I'lie carriers' antennas will be located on tlhe proposed 130 foot monopine tower. l;nvirontnentally sensitive electronic equipment will be housed in ground Mounted equipment shelter(s) or cabilhets at tee foot of the tower. Shelters commonly use wail-mounted IIVAC emits Cor environmental control which only produce, sound when they are actively providing, Cooling to the equipment shelter. They are similar in design and iunctian to Targe window air conditioners that operate at many residences. Cabinets use srnaller fans that operate continuously, so they have a smaller sound profile. Two emergency generators are proposed by A'C&'I" and Verizon that operate only during emergencies and for weekly routine daylime testing of about one-half llclur. This report addresses the existing sound levels and sensitive land uses in the area. ahs well as the sources and expected sound levels associated with this installation. The inhial study is only related to the currently proposed tower and carriet's (AT&T & Verizon). A eu€tlulative impact analysis of the cull build-out is provided as Appendix 1 based on the design capacity of the facility. 1. Ovei-view o1 Pi-oject and Site Vicinity The project is located at the existing privately owned residential property located at 122 Foster Street ill North Andover, The site is a large lot on ilhe north side of Foster Street. "I'lle site consists of a large open field, sonic wooded land, a residence and shelter for cattle. Several adjacent residential properties are to the Southwest, North and Northeast along Foster Street. Ambient sound levels were established by attended held rneastrrements using standardized and calibrated equipment. 'The sound levels resulting, irom operation of the proposed equipment were estinlatcd usitlg vendor data and nlcasurcnrtents made at similar installations. facility plans were provided by Varsity= Wireless strpporling the Evaluation of Ilrc;;ject sounds. The corresponding sound levels expected at the property boundary receplors were estimated using soured modeling, techniques prescribed ill acotrStieal literature, Fignr'e I is annotated oil a backdrop of Google Earth aerial photography to show the proposed site, surrounding area and analyzed receptor locations. The nearest property boundary receptors in representative directions are evaluated and labeled with their orientation a€hd distance from the proposed equipment, 'I'lea nearest sensitive residences ill each general direction are also evaluated. The ambient sound level Measurement locations are shown in Figure. I below with the letter'M'. ......... ......._. ................. ..... 1 ursin, .Sound:ss ssment i f Ekk i k' \ vglc,Acrial 11hmo \ Receptor Locatton \ /§Measurement Locab» < ° SCALE IN FEET —- ` ® O 450 300 Figur» Aerial Viewofthe SlIte.meaJcmet Locations and klodelinu,R« ma . .. . . r wf ke<Aord—bidover > . . Sound Auese 2. mscussion of Genei-al Sound Analysis Methods There are a number of ways, in which Sound (noise) levels are Illeaskired and (111'.litil led. All of,them use the logarithmic decibel (dB) scale, Following is a brief introduction to tile noise measurement lernimology used in this USseSsMet'l. Noise Mdries The Sound Level Meter used to lileasilre clivii-olillicilial sound is a standardized instrument.I It Contains "weighting networks" to adjust tile Frequency response of the illSIRIDIC1111 to approximate. that oaf the human ear under various circunislarlees. One of these is the ,1-ilw4ghtingy network, A-%veioNed SOLltld IeVCIS elllllllNiZC tile Mi(kiiC frequency sounds and de-emphasize lower and higher frequency SOLIMIS; [Ile)' are reported in decibels designated as "(113A." All broadband levels represented in this study are weighted using the A-weighting SCale. Figure 2 iflUstrate~ typical sound levels produced by SOLlrCCS that are falllilkll-to most people. Hie sounds in our enviromilent usually var), with linic so they c',111110t a1W,'Ys be described with a single number. TWO 111011OLIS are used for describing variable sounds. These are exceedentee levels and equivalent level. Boil, are derived 1rom a large number of moment-to-moment A-weighted sound level lileaSLIN111CHIS. UIUMI'MICC levels are designated I.,,, where 11,1 call 11,1ve any value from 0 to 100 percent, For example: ♦ 1(j is the sound level in (I 13A exceeded Only 10 percent of tile time. It is Close to the lent Period. The 1,1(, is sometimes Calico] observed during the measurement IM aximum level obsei the. intrusive sound level because it is caused by occasional IOUder noises like those 1rom passing motor vehicles. + is tile median SOUlld level: the SOLInd level in dRA exceeded 50 percent of the time (hlrillg tile measurement period. ceill of the time during (lie measurement 1,)() is the sound level in(113A exceeded 90 per period. The Lw, is close to the Lowest sound level observed. It is essentially tile S,'Mle - ire 110 IOLO, as the residual sound level, which is the sound level observed when there-e transient noises. 13Y LlSillg eXCCC(.IallCC levels it is POSSil)IC to separate prevailing, steady sounds (L.)A) from occasional, IOUder sounds in the environment. A mericapt Aal im ral S14 m(hj)yj 1cl Level toters, ANSI S1.4-1983,published by the Slandards Secretariat orthe Acoustical Society of American,W ......... .......... ..... ... .......... ........ ............ .......... ................ 3 Sill Ind.Esse ssincl?I Common Indoor Sounds Common Outdoor Sounds dBA Rock Band 110 Chain Saw 100 Inside NY Subway Trait, Food Blender 90 Truck at 100 ft. Garbage Disposal 80 Vactlul" Cleaner 70 Gas Lawn Mower at 100 ft. ,rV/Radio Listening Auto at 50 ft. (40 mph) Normal Conversation 60 Heavily Travelled 111911way at 1000 ft. Dishwasher in Next Room 50 Moderate Rainfall on Foliage Bird Calls at 100 ft. Refrigerator 40 Small Brook at 25 ft. Library 30 Rural Commilility (110 nearby Bedroom at Night 20 10 'I'lireshold of flearing (laboratory) 0 Figure 2: Typical Sound Levels from I.,"myclay IApet-ience . ..... ... ... . ......... .. ................. .......................... ............... r eirsitv The equivedent level is the level of a hypothetical steady Sound that has tile same energy is tile actual 111CtUatilig sound observed. The equivalent level is d Sigiat d and is also A-weig.ilted. The equivalent level is strongly influenced by occasional 10tid, illll-LISiVe JlOiSCS. Wh011 a steady sound is observed. all Of tile I", alld L, are equal. In the design of noise Control treatments, it is essential to kno%%, something about the I`rCtIL1C1lCV SI)CC1111111 of the sound of interest. Noise control treatments do not fullelioll like the human car, so simple A-weighted levels are not useful for noise-control des-iZ.,oll or the identification of tones. The spectra of sounds are usually stated ill (el-Ills of ociave bundsoundpressure levels, it) d1l. with the octave frequency hands being,1110se established by standard.' The sounds at the proposed site were measured in 1/3 octave bands alld modeled in Full octave I.)aJI& SOUIld pressure levels, ,Is well as the A- weighted equivalent sound level. Only the A-weighted values are presented here, since they represent the more easily recognized sound scale. Noise Regulations and Criteria SOLIlld C01111flialICC is J109Ltl on two J),lscs: the extent to which governmental repilations or guidelines are met, and the extent to which it is estimated that the community is protected Rom the excessive sound levels. The governmental regulations that may be applicable to sound produced by, activities at the proJeel site are summarized below. Federal Occupational noise exposure standards: 29 CFR VgUlati011 restricts the noise exposure of employees at the workplace as referred to in OSI 1A requirements. Workers will not routinely attelid this facility. Furthermore, the facility will emit only occasional somids, ol'modest levels, as demonstrated by this study. Slate • 310 CNIR §7,10 U qualitatively prohibits"unnecessary emissions from 1,11 source of'sound that may cause noise". "I'llis is interpreted quantitatively by MDFP Form BWP AQ SFP3 and their DAQC Polio), 90-001. ill Massachusetts, noise is regulated is an air pollutant. The MDI I`s Noise Policy - states that a new noise intrusion maty not increase the broadband sound level by more than 10 dBA over the pre-existing I.,)j) ambient ICVC1. T011,11 SOLIIl&',, defined as any oclave band level that eNceecls the levels in adjacent octave bands by 3 d13 or more, are also prohibiled. 2fnr<zrkiur1hqf_f)cj(jre(pIll'1jsjj.(j_oc,trj%-e 8(jn(1Vih(!rS.WS,ANSI S 1.11-1 966(R 1975). ............ .......... ............................. ............ ..................... ............................. .............. Varsili, J[Vireless Norlh.,fpidomr. Sound Assessment North Aneluver The Town of North Andover has regulatory criteria for Wireless Service Facilities in the lolling Bylaws section 8.9.4(c): "(iv) Gr(7und-mounted equipment for wireless service facilities shall no)t ge►terate acoustic noise in excess of 50 d13 ,u tite security barrier." The property boundary is clearly distinguished by a fence and rock wall. It is used ill this study to detine tine security barrier and basis of the North Andover criterion of 50 M1 3. Existing Community Sound Levels A site survey r.rnd sound mcasure1trent study was conducted for the propotied F cility. Sournd level Ill CasureltteIlk Were made on tilay 12 and H, 2015. The observed sounds elle-luded some intrusive sound sources such as do., barking, local vehicle passages and aircraft over-flights. These short tarn sources are statistically excluded ll'ont 1.,90 levels used to represent the background sounds. Measurement!acations The purpose 01' the rtmbient survey is to characterize the existing ambie.utt sound conditions at the site. 'Tile contnturnity surrouurrding the site was evaluated to identify the areas that had the greatest potential to be affected by sound emissions at the site. Sound level measurements were• made at residential setback and at the proposed tower location. Nighttime sound levels did not I111ctuate significantly along the property as reflected in the measured levels. "These levels establish an ambient contnnunity baseline for tile site and adjacent residential receptors. Measurement Methotlnlog), Since sound impacts erre greatest when existing sound levels are lowest, the study was designed to measure contntunity levels under conditions typical of a "quiet period" for the area. No insects or seasonal frog sounds were noted during any of the E- 11easure111Cnt periods. Winds ranged from 3-8 mph, 'Temperatures ranged from 48 F at night to 7r) P during the day. Skies were clear during all nteasurentents. Weather c<:)nditions were noted during the study and contemned by local data from the Lawrence Municipal Airport 1vCalltelstation (K1.,11rA1)• Sound level rneasurentenls were made using a Rion NA-28 sound level meter, The meter was mounted on a tripod approximately 5 feet above the ground. hlie microphone was Fitted with the iactory recommended 3-inch foam windscr'ecrt. The meter was used to sample tile environmental sound and to 1)roCe.ss the sound into.) VarIUnS statistical metrics for use In this analysis. Various metrics wel'C rnnCilSlrl'ed, belt (lie I,,,o (90ile percentile) is documented to represent the ambient background sound levels. The ureter wits equipped with a real time octave band Filter set. which allows .. .. ....._._.. .. ..... 1 u�srlt Wireless,/,forth, ndcn er ,Sound Assessment ssment the meter to process sound levels into 113 octave hands. While spectral Bala were collected. the survey results are reported only in combined A-weighted levels. 'Tile filter complies with the requirements of the ANSI SI-I I for octave band filter sets. The meter was factory verified within one year of the study and calibrated in the field using a Rion NC-74 sound level calibrator before and after the tneasuretnents. The results of the field calibration indicated that the meters did not drift during the study. III addition to the measurements, notes were made dining the survey describing the nhserved sotrr-ccs aT sound. The results of the survey allow for both quantitative and qualitative analyses of the ;lcotlstical environment surrounding the proposed egttipmertt. The characterizatit)rt of ambient sound levels reflects the variations caused by traffic patterns and community activity. r''1lerrsrtrcYlucyrr!lic�.►rr!!.+' l.:Xisting sound levels in the pro ect area are dominated by sounds of traffic oil local roads wizen they have traffic. Other sauces included {occasional dog barking, birds Chirping, eonltile rcia1/farmland activity at nearby properties and occasional cartlntcrcial aircraft over-Ilights. Although the nearest highways are relatively distant, their associated sound dominated the background levels dttrittg the gtliet nighttime conditions. The results of the surveys are summarized ill 'Tables t. Table t: Background Sound Levels in the llm&ct Arca Conimunity Contlitioll Day Lett Night 1190 Residential Driveway 11,56 AM 41 d13A 1:18 AM 24 d13A On-Site Location 12:28 PM 42 df3A 1:44 AM 24 dBA 4. Sounds ft•ont the Propnsecl Installation The proposed support equipment has been designed to have modest sound emissions. Most of the cquil)ment planted for the installation Nvill produce no sound. Sounds that are produced will be adequately mitigated to prevent any significant cff'ects al sensitive locations. Details of the modeling and assttrnptitnts arc provided below. This analyse, represents the most likely sound levels to be expected as a result of the normal operation Of the equipment using data from potential equipment vendors and measurements Of Other similar egnrpment. The proposed equipment will include anlemlaS lOCated 011 tilt= prDI)OSCd tnOr101)itte E tower and a cable tray that will contain the supporting cabling. This equipment will produce no signiftealtt envirortlnerttal sound. There -,ire only two proposed SOLH-CCS of sound related to this prujiect, from cooling and from the generators. Wall-mounted FI VAC units provide cooling for the AT&T equipment shelter. The Verizon cabinels will be fitted with coolers out the cabinet doors. The cquiptttcrtt is described and quantified below. ..... i ru.�Nt� ii rte lcrs.r r1'��r11�rf�lrint�c�r 7 5'vt+rul"Issessment t nvironmen(al Control Equipment. A proposed egtlipme.rtt Shelter Will hortse elecU.onies that are; environmentally sensitive. A pair of wall rttount HVAC condensers will maintain a safe tell,peraltire for the cleeu•c.ntics inside the AT&T shelter. T'hc sol.ntd is only emitted when €ntit is actively providing cooling. The Verizon cabinets are equipped with a door mounted cooler that only operates when the ambient temperatures are above 900. 'I'lte cooling, etlitipment would never operate ecmtinuously as modeled here and will seldom operate during cool or cold C 11ditioits, Emergency Generators. The crttergeitcy generators swill produce somewhat higher sound levels than the shelter HVAC units during operation, but they will operate much less frequently. 'These units will not be operated to provide routine power to tltc lacility. There are only two occasions whets either generator will be. used. "fhu first is the rolitine periodic testing of the unit. This is a maintenance function rind assures that the equipment is available when needed for emergency use. hatch lest will List for erne- half hoar or less, no more than once per week and only during the daytime hours. The other occasion when the generator will operate is during tile loss of utility power. These rare events are most likely to occ€rr during exceptional conditions like nutjor 'Slot-ms. The emergency use is Considered an upSel aOndition that is trot addressed in this report. But the modeling reflects the two generators operating all the sante time. This would be expected only during emergency operation, and would have the potential of requiring extended periods of generator operation. The generators will be free- standing diesel-fired units within acctuslical enclos€urea. 'I'lzis Study assumes a Kohler f 30 kW unit for AT&T and a Generac 20 kW unit for Verizon. 'the specific model may I change but will be designed to ince( the sante criteria. Art equipment layout plan is shown in figure 3. An elevation drawing ofthe proposed facility is shown in figure 4. Table 3: Modeling; Input Pannuetel•s Itcnt llodelin Irtt�atrull3cserilttiun Terrain flat Terrain asseuned Tem peralllire _ I011C' Relative Ilurnidity 70%, Weather Condition 0.5 m 0h,directly from racilit r to rcce nor* _ Ground Attenuation 0.4,soft: tore reflection) minos7ltericInversion CONCAW13 CatcYoryF**_._-- _ 11 of Sound lke€lections 2 ftece Ear I lei�ht 1.5 ureter above ground level * Propagation valculalions inn.orpew'ale the adverse e f/i C1s ol,cerlcrrpt alnrospherir and nrerlirnraln�tett!cnrnliliarts u�r sr.�rr�rd pra].ur ritlir�tt, such as kenlle h1 ce c, (#'I to?nvs(M) 1996-2: 1987)fi•om soury e la receiver. *C(7r1'C,,l WE C'alegary F'indicates lira presence of stable ulmosphere that In'( )t s so'nu prohi{cation Technical project plans were used to dctiiw the dimensions all(] distances of equipment and receptors used in Iltis model. _._...... _...... ...... .... ......... �'- E'ar st!)' tf`ry e les.+:",v�„•lh,f rrsG>uer. 8 .Snxutd,t,+sa..ss�rrrrnl Gmw LN 4 r _ A kits A7&T t b - Y }_ � � r ! f OMPOUND PLAN Fi-tire 3: Plan;Showing the Proposed Equipment Layout of the Sile 1 h.'M`Antonnas 127 ft WMM1l�MutY Mrwtanrsa�� ,, t17 at r r a r. at,a1A.tiMdM�+Mtit�fYtM�tM i F mw Mdrlsrrona+s F 1MNre"Mmas W. J, 80 a1 I,'Mkung Tom Campy •t f W.M1 too AT&T �esMrxsx m , hnUr f"a4rrtaP I To AT T 1;�A„�yd1Y"�Mat I 7f 1JCMa�'M l fca&9ru.a a� « �" ✓ ,.,. y M E yen �r 1 ' G _ f GMAM,.;aOW M WEST ELEVATION 10 . 5°oulltlAssessment l/eplits of:Smind Gebel Modeling 1'0 calcul<lte- file nightlhne level, the sound 11otn the wallntotmt IIVAC and Cabinet coolers are talodeled at receptor locations. `I'lle site area and receptors are shown in Figure 1. The results of the. nighttime modeling arc shown in "fable. 4 for periods when only the condenser is operating;. It is noted thttt these calculations etre based on worst- case project equipment assumptions during the few hottest days of the surntner. 'The condensers will produce the same sound during, the daylitue as at night but tend to operate less frequently without direct sunny conditions. ']'he equipment is never expected to operate continuously as assunaed in this study. These results represent the fe�,v tithes in file sulllmer when file unit will need to cycle 1711 and off dUrtng the quietest hours of the ntgllt, Table 4: Predicted HVAC Levels Expected at Receptors Distance from Ambient Sound Level sound Level HVAC Receptor Location Equipment(Ft). Nighttime L9a Standard/Goal Level dBA Property line, East 130 24 50 43 Property Line, South 140 24 50 36 Residence, East 315 24 50 31 Residence, South 200 24 50 28 Residence, West 530 24 50 33 Residence, North 620 24 50 30 Note: it is customary to conduct all calculations using precise vatucs,but to round the result to whole.dBA. All results are rounded to Units(dBA). Approximately once per week, the emergency generatiars will be tested. This is important Efor equipment reliability and will involve up to one half hour during daytime periods only. 1.)uring the daytime tests, the mitigated sound from the emergency generators will he added to the I IVAC sound. The result of the modeling estimate of both generators anis all i HVAC sound is shown alongside the appropriate noise standard. This represents a wort case scenario where both generators are tested simultaneously during; the few honest days ol`the year. Table 6: Worst-Case Generator plus HVAC Levels Expected at Receptors Distance from Ambient Sound Level Sound Level Gen + WVAC Receptor.Location Equipment F# Da time Lso StandardlGoal Level dBA Property Line, East 130 42 50 50 Property Line, South 140 41 50 46 Residence, East 315 42 50 36 Residence, South 200 41 50 33 Residence, West 530 41 50 42 Residence, !North 620 42 50 34 ......... .... ...... Farsili, Wireless North Arrrk3l e 1! 5nruuf.tssi ss»r ur rVoise Mi4g alion Assrrmillions There. are several notable mitigation nlas"res in place to achieve (lie low sound levels' shown above. The generators will be inslalled within I-,cvef 11 Aeoustieal f�,Clclosures whie.11 will mitigate their sound emissions to 65 and 70 dBA (a� 23 feet. respectively. iVAC units will produce modest sound levels and are oriented away from the nearest residential and property Iine receptors. I;ifure. S is a graphic overlay of the modeling � results. file ligure includes both the discrete modeling I'esnlls and sound conlours expected during the unlikely simultaneous operation of AT&T and Verizon's IIVAC and Generators. 5. Conclusions 'file I)otellthd tiounds from the proposed installation were evaluated using nleasrn'ccl field data and numerical modeling software, Ambient sound levels were established by direct field measurements using equipment that is standardized to the current ANSI standards, l gttipnlent operating sound levels were quantified by using Vendor estinlaics and contirmed by representative field measurement at other irlstallatioCls, Most 01'the time, the proposed equipment will produce no sound. When operating, MVAC units will prtxluce sounds up to 46 dBA at tile nearest property line and 31 dBA or less at local residences. The I IVAC somld will be below the rown or North Andover criterion at till loctltiotts. ']'Ile sound will only be above atllbictlt on a rev 110t summer nights the AC: is needed outside of the daytime hours. Under these same conditions, residences tllight also use their AC condensers which would also affect the arllbierlt sound field. Infrequently, file proposed equipment will include testing of the emergenc)r gettcrator. ])III-itlg the daytime test, 111e. soutld level will include the sound from the .generator operation. For that half hour. the equipment will produce 48 dBA at the Clearest property lisle tocation. 'flee sotnld will be below the applicable standards and is below the daytilrnc ambient levels at ail oft-site conlnlunity locations, k f Certily that this study was cotlducte;d based on Held mcasttrctile rits, numerical modeling tools and Methodologies described in the report. Douglas I_. Sheadel. C'C IVI Modeling Specialties ......_ .. f'arsttt� {i-hcicss Aol-1ir.tn1l6+!ev 12 sound LLGEND �Uc!�A 1 R Ok- IP4 34 dSA 71 Oo-4 KA 8c 0 g3ELA, Base from Goode Eardl 0 Measurement Lo!-afion !a Modebng Receptor Approx Scare in FEET 0 15C 300�, 42 dELA 33 daik Fioure 5: Graphical Suar-v of Proposed Prcect Wors-t-Case Souind Emissions Varsin- 11-ireless NorifhAt&over SwLpd.hsessmew APPENDIX A: Full Build-Out Nohve Modeling Assumptions The proposed project currently inchules only AT&T and Verizon its carl-icr tenants. i lowever, the facility is designed for 5 carriers ill the liope that this (ower location and Coll f Igural ion will benefit other carrier networks. For this reason, a Rill build-out scellado is provided it) show the sound rOSLIJIS if all the C(]Llil)lllCllt slots are tilled in the future. Since there are, no engineering P1,11's sli0\61V. this configuration, this study is based oil typical scenarios at many other existing lowers. It is intended to address the question of whether the Ilicility call be fully developed within the st)jilid criteria ol'North Andover. The gull 131.1ild-Out will start with (lie AT&T and Verizon equipment included ill this application. These are the two carriers with (lie highest volume and network needs. Both AT&T and Verizon propose 11 generator. Based oil the typical Personal Wireless facility. these, will be Ilic only generators in the full build-Dirt. -1-11c t(.)\%,er 111(i compound are designed to accommodate other additional co - locators that could include Sprint, T-Mobile and other ITC-licensed providers of WilCleSS SOTViCCS. 'I-1CSC SCtViCCS tend to k1se only Cabinets, which have very Small ventilationThese other carriers seldom Use fians and produce little Sound, generators, While the energy of their cqLlil)lllCtlt is included here, it does llot Contribute significantly to the Cumulative site sound energy. This represents the proposed worst-case 01)eratiol7 JAUS 11irce additional carriers. l,'iglll-e A I shows the modeling results fair the Cumulative impact configuration described here. -5. C0111CIUSiOlIN AT&T and Veri7oll have committed it) install their cqUij)lllCll( at this site. But ill the event that the site attracts other carriers to fill all the available co- location space, this full build-out analysis was conducted ior (Ile site, This configuration is not engineered, but is based on observations of' equipment configurations at malty fully developed sites. Both AT&T and Verizon Wireless plan to operate generators at this Site. ()(liel-carriers(10 not t)1l)iCll1)1 use,gC11Cl'-M0r - support. It' all equipment were operating, shiml(anCOUSly under conservative assumptions, the total sotill(I at the east property line is expected to he .50 dBA. Common mitigation nivamires like equipment choices or lining some part of' the fence could easily reduce the 1`aciliry Sound at the recelMors, but the modeling shows it to be ill Compliance with the SO dBA requirement in its proposed The study indicates drat a compliant design tier the full build-out s C011figUration, i 1'easible 1'(.)r this site. ............................ ............... ......... .. ...... .......................... ...................... .... Vursiw Wireless Nor thAnlover LEGEND -_0 CFk 35 dBA, -C 0 to 0d Base from Goode Eanh 0 Measurement Location Modeling Reoeptor Approy- Sc2he m FEET 6,- 15-0 30-C�_ 37 dHA 46 d&A 42 dBA 34,dBA Fire Al: Modeling Results for the Full Build-Out Scenario,Overlaid on a Goode Earth Image WIX I sit"11"7re,��vs AorihAirdurer 4p.re �_ A Currizifal'ire j rnpac!