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SDP 93-01; PRIME AUTO CENTER; ACOUSTICAL ENVIRONMENTAL STUDY; 1993-04-14
I I I I I I· I I I I I I I I I I I I I Dr. Leslie E. Penzes Certified Acoustical Consultant, P.E. 5725 Linda Vista Rd. #7 San Diego, CA. 92110 (619) 295-0338 MR. Jeff Gibson Associate Planner PLANNING DEPARTMENT City of Carlsbad 2075 Los Palmos Drive Carlsbad, CA 92009 Dear Mr. Gibson: Attached is my acoustical report entitled: "ACOUSTICAL ENVIRONMENTAL STUDY FOR THE APPLICATION OF THE PROPOSED PRIME CAR WASH AT PASEO DEL NORTE IN CARLSBAD". Your comments related to the previous acoustical report on the same subject is also attached. For any further information please feel free to contact me; I would be happy to supply it. Sincerely: Dr. Leslie E. Penzes Registered Acoustical Consultant of the City of Carlsbad, P.E. May 28, 1993 I I I I I I I I I I I I I I I I I I I Richard A. Stupin April 14, 1993 Page 3 Jf J! /' /; •t; I' J ; l,.>I, PROJECT DESCRIPTION {'_/, c/t. • Provide additional background information on the operations of the IUlly's, Lube-N-Tune, ~d Prime Auto Wash in order for staff to evaluate onsite circulation and parking demands, (1.e. number of employees per each land use during peak hour shifts, number of cars tuned, washed, and served meals during peak hour intervals, the time it takes to service customers from start to finish, etc.) NOfSB sttiDY: -i('S,,_ - 1. Verify the professional qualifications of the acoustical consultant The City requires the following qualifications: . 2. Either I: A degree in engineering, physics or a closely related field, and four years acoustical engineering experience; Or II: an equivalent combination of education and relevant experience as detennined by the City; AND Either A: Is a Registered Engineer in the State of California; Or B: Has passed the Institute of Noise Control Engineering (INCE) Professional Examination. OR b. Is certified as an Acoustical Consultant by the County of San Diego, the County of Orange or other jurisdiction with comparable requirements. • The methodology for detennining the noise levels\~;~{:~~ points on the site is not clear and there are inconsistencies in the repo~e text indicates that the noise level for the 15 hp 90T Model diyer would 1>(~9 dBA, at the exit of the tunnei ~er, Exlubit. 3 illusttates that at 20 feet from the dryer the noise level would ~j3 .dBA, and the Proto Vest Inc., specifications state it would be 83 dBA. To a-void confusion the noise analysis should focus on the type of dryer system proposed to be utilized in th.is carwash and the discussion of the others should be eliminated. All the examples and specifications in the study illustrate noise levels from dryers not located in a tunnel structure or located at the exit of a structure. This project proposes to locate the dryer system 20 feet into a tunnel structure, therefore, how were the noise levels determined at Points 1-3 on the site plan. Projected noise levels must reflect the proposed conditions in terms of the actual location and type of noise generating source. Noise levels should be evaluated along the southern property at worst condition, the outdoor seating area for the restaurant, and at the restaurant structure. The usable outdoor seating area should be mitigated to 60 CNEL and below if there are noise impacts, and all interior struct,ures must be mitigate to 45 CNEL or below. I I I I I I I I I I I I I I I I I I ACOUSTICAL ENVIRONMENTAL STUDY FOR THE APPLICATION OF THE PROPOSED PRIME CAR WASH AT PASEO DEL NORTE IN CARLSBAD SUMMARY: A noise environmental impact study was performed in order to determine the noise level at the site of the planned development project. Based on test data the noise level in L,equ. at the present time is 65.3 dBA in L,equ. as measured 196 Ft. from the western wire fence (property line) of the project site. Based on a computer simulation, the future noise level is 62.5 dBA in CNEL at the outside dining room area of the restaurant. This high noise level imposes some environmental restrictions on the const- ruction of the car wash. The plans supplied by Mr. Arnold J. Slaughter, Vice President of Carson Development, Inc. (Fig. 1), provides the preliminary design for the car wash project. Since the neighboring outside dining area of the restaurant will be potentially impacted by a noise level greater than 60 dBA in CNEL some mitigation is required for the project (Ref. 3). RECOMMENDATIONS: . To reduce the noise level below 60 dBA in CNEL, a 6 Ft. high noise barrier is required at the eastern side of the parking lot between the prime car wash and the restaurant (Alternate 1) or as an alternative, a 6 Ft high noise barrier at the western side of the outside dining area of the restaurant (Alternate 2), (Fig. 1) . . An Alternate 3 is also considered, when the noise mitigation of the Mobil's car wash will be constructed by Mobil on their own lot (Fig. 6). A noise barrier measuring 6 feet in height is recommended. The noise barrier can be a concrete or brick structure, or a wood frame covered by stucco on both sides, or plastic or glass measuring 1/411 thick. I I I I I I I I I I I I I I I I I . The car wash can be the 15 HP models, 90T or 90SX with or without the silencer . . Since the proposed noise barrier will reduce the noise level to less than 60 dBA in CNEL outside of the restaurant, using normal construction practices the noise level in the restaurant will be 45 dBA or less in CNEL. Therefore, the noise limit of 45 dBA in CNEL inside of the restaurant is not violated (Ref. 3) . . As was observed, measuring the noise 196 Ft from the western wire fence (parking lot between the car wash and restaurant) the noise level is 65.3 dBA and it does not drop moving east on the lot. It was discovered that an extra noise creates this phenomenon and this is gene- rated most likely by the adjacent Mobil's car wash. To mitigate this extra noise either Mobil will be respon- sible, or to avoid any delay on the current project, a 6 Ft high noise barrier could also be erected at the northern side of the outside dining area of the restaurant (Fig. 1) . Dr.Leslie E.Penzes Registered Acoustical Consultant of Carlsbad, P.E. May 28, 1993 2. I I I I I I I I I I I I I I I I I I I DISCUSSION The recommendations made as a result of this study are based on sound measurements taken at the site of the planned prime car wash project and the related computer simulations. For the computer simulations the required noise level information for the car wash was obtained by Mr. Arnold J. Slaughter, Vice President of Carson Development, Inc. and the traffic information was obtained by CALTRANS (References 4 and 5). EXTERIOR NOISE MEASUREMENTS Instruments For the exterior noise measurements, a Quest 1800 Sound Level Meter Type 1 (Serial# HP0030025) with the accessory was used. The accessory included the Sound Level Calibrator by Quest Type CA-22 {Serial# J 0040030). The sound instrument was calibrated before the test and checked before each measurement. Field Test Measurements were taken in the late afternoon (between 5: 3 o PM and 7:04 PM). Table 1 presents the results of the measurements as measured at the western wire fence on the site facing Highway #5 and at the future location of the car wash. • Based on the measurements, the measured value of L,equ. for free field is {Table 1, Mean) 8 Ft. from the western wire fence: Mean, Facing Highway #5 = L,equ. Measured, Average= 69.2 dBA Table 1 also provides the measurements at the future location of the car wash (96 Ft from the western wire fence), which indi- cates a drop of 3.8 dBA. This noise reduction can be explained by Highway #5 appro.ximately 3 O Ft below the site, which creates an earthberm effect. At this location the measurements indicate a mean noise level in hourly equivalent: Mean, Middle of site= L,equ. Measured, Average= 65.4 dBA 3. I I I I I I I I I I I I I I I I I I I Table 2 shows the ~easurements at the eastern part of the project site at the location of the parking lot between the car wash and the restaurant. The measured higher noise values are due to the operation of a car wash at the adjacent lot. The forthcoming computer simulation will provide further explanation of this data. The measurements indicate that the noise level in L,equ. is: Mean, Eastern Part of Site= L,equ, Measured, Ave.= 65.3 dBA. This noise level will also be expected in the neighborhood of the restaurant without proper mitigation. However, as it will be shown that this noise level is not created by the current project. COMPUTER SIMULATION Due to the limited measurements (Tables 1 and 2) and the requirement of having to predict the present and future value of L,equ. and CNEL, computer simulations and predictions are required. Table 3 presents the input and output for the eight lane road (References 1 and 2). To simulate the test data of Table 1, the following steps were taken. According to CALTRANS (Ref. 4) the present value of ADT is 151,000 Vehicles/Day and the peak traffic volume was estimated based on the formula suggested by Wyle' s Report (Ref.6): Peak Traffic= 0.87(ADT)/15 = 0.87*151,000/15 = 8758 Vehicles/Hour The traffic mixture of cars, medium and heavy trucks is obtained according to Ref. 5 and an average speed of 55 MPH was applied. Table 4 provides a noise level of 69.9 dBA in L,equ. This value is somewhat higher than the measured value of 66.2 dBA (5.5 %) . on Table 5 with an estimated traffic volume of 7360 Vehicles/Hour (19%), the calculated noise level is 69.19 dBA in L,equ., which shows an excellent correlation with the test data (Table 1). Applying the same traffic information Table 6 provides a noise level of 66.66 dBA in L,equ. at the middle of the outside dining area ( Fig. 1, trellis). It should be noted that both of these noise levels must be further reduced due to the effect of Highway #5 which runs in a valley (earthberm). Based on the traffic information obtained by CALTRANS the future traffic volume is 200,000 ADT. Table 7 provides the noise level at the outside dining area applying traffic mixture of cars 4. I I I I I I I I I I I I I I I I I I I (93%), medium (3. 3%) and heavy trucks (3. 7%) as before and for daily distribution of 76%, for evening distribution of 11 % and for night distribution of 13%. Based on Table 7 the noise level in CNEL is: CNEL,Future,Outside Dining Area = 69.5 dBA Earthberm and Noise Barrier To account for the effect of the noise generated by Highway #5 at the project site and to consider also mitigation the computer method of noise barriers is introduced (References 1 and 2). Table 8 presents the input and output of the noise barrier program (Ref. 's 1 and 2) . Table 9 shows the noise reduction produced by an earthberm estimated by an elevation of 30 Ft. as: Noise Reduction= 9.5 dBA Applying this noise reduction to the noise level determined at the outside dining area of the restaurant the hourly equivalent is: L,egu. = 66.6 -9.5 = 57.1 dBA This should be the noise level measured at the eastern part of the project without the noise created by the adjacent car wash. The future value of CNEL at the outside dining area applying the effect of earthberm is: CNEL, Future. earthberm = 69.5 -9.5 = 60 dBA Since, this noise level will be further increased by the introduction of the new proposed car wash. mitigation will be required. NOISE LEVELS OF CAR WASH Fig. 1 provides the layout of the development including the car wash. Fig. 2 shows the noise levels around a 90XS Stripper. Fig. 3 illustrates the concept of the Silencing Package for the 15 HP Stripper. Fig. 4 provides the noise reduction of a Standard 15 HP Stripper as a function of distance. Fig. 5 shows the noise 5. I I I I I I I I I I I I I I I I I I I reduction due to distances for the 15 HP Strippers, Models ·9oT, 90T with silencer and Model 90XS with silencer. The noise levels of Fig. 4 and Fig. 5 are for the Stripper without Silencer are identical (Model 90T without Silencer). The silencer reduces the noise by 5 dBA for Model 90T and the noise reduction is 9 dBA for Model 90XS. The noise levels on Fig. 4 and Fig. 5 (Model 90T without silencer) can be calculated by the following formula: Noise Level of car Wash= 94 -20LOG{(5.5 + Distance)/5.5} Distance>= 10 Ft. Table 10 shows a comparison of the calculated noise levels by the test data. As this comparison shows the maximum error is 5%. For larger distances the above formula is corrected by this error as: Noise Level of Car Wash, Corr.={94-20LOG((5.5+Distance/5.5]}/1.05 Distance>= 100 Ft. Applying this formula the noise level of the 15 HP Stripper without silencer at a distance of 150 Ft, which is the distance between the car wash and the outside dining area is: Noise Level, 15 HP= {94-20LOG((l50+5.5)/5.5]}/1.05 = 61.87 dBA The noise level at the outside dining area for the Model 90T with silencer is: Noise Level, 90T with Silencer= 61.87-5 = 56.9 dBA The noise level of Model 90XS with Silencer at the location of the outside dining area is: Noise Level, 90XS with Silencer= 61.87-9 = 52.3 dBA Combining the noise level of the lowest calculated value by Model 90XS with silencer is: CNEL, COMBINED= l0LOG( 10A5.23+10A6) = 62.5 dBA Obviously mitigation is required, since the computed noise level of 62.5 dBA in CNEL is higher, than the noise limit of 60 dBA in CNEL set by the City of Carlsbad. 6. I I I I I I I I I I I I I I I I I I I MITIGATION Alternative #1. To reduce the noise level created by Highway #5 and the from the car wash a 6 Ft. high noise barrier must be erected on the eastern side of the parking area between the car wash and the restaurant (Fig. 1). Table 11 provides the noise reduction of the combined earthberm and noise barrier at the location of the outside dining area as: Noise Reduction, Combined= 12.67 dBA Applying this value to the CNEL for the future noise level determined previously, the noise level in CNEL from Highway #5 at the outside of the dining area is: CNEL, Earthberm, Barrier= 69.5-12.67 = 56.8 dBA Table 12 shows the noise reduction for the car wash due to the effect of a 6 Ft. high noise barrier: Noise Reduction, Car wash= 5.35 dBA Assuming that the 15 HP Stripper without silencer is used, the noise level in CNEL due the noise barrier at the outside dining area is: CNEL, Car wash= 61.87-5.35 = 56.5 dBA The noise created by Highway #5 and the car wash must be combined as: CNEL,Comb. outside Dining= l0LOG( 10A5.68+10A5.65) = 59.6 dBA This value is lower than the noise limit of 60 dBA of the city of Carlsbad. Applying the 15 HP Stripper with silencer the noise level in CNEL will be even less, than determined above. Alternative #2. As another possibility in order to create better visibility of the car wash from the street, instead of a the noise barrier at the eastern side of the parking lot, it is recommended a noise barrier be placed at the western side of the outside dining area. 7. I I I I I I I I I I I I I I I I I I I Table 13 provides the noise reduction of the combined earthberm and noise barrier at the location of the outside dining area as: Noise Reduction, Combined= 13.2 dBA Applying this value to the CNEL of the future determined previously, the noise level in CNEL from Highway #5 at the outside of the dining area is: CNEL, Earthberm, Barrier= 69.5-13.2 = 56.3 dBA Table 14 shows the noise reduction for the car wash due to the effect of a 6 Ft. high noise barrier: Noise Reduction, Car wash= 5.44 dBA Assuming that the 15 HP Stripper without silencer is used, the noise level in CNEL due to the noise barrier at the outside dining area is: CNEL, Car wash= 61.87-5.44 = 56.4 dBA The noise created by Highway #5 and the car wash must be combined as: CNEL,Comb. Outside Dining= l0LOG( 10A5.63+10A5.64) = 59.3 dBA This value is lower than the noise limit of 60 dBA of the City of Carlsbad. Applying the 15 HP Stripper with silencer the noise level in CNEL will be even less, than determined above. CONCLUSION Erecting a 6 Ft high noise barrier at the eastern side of the parking lot between the car wash and the restaurant, any type of 15 HP Stripper car Wash with or without Silencer can be used and the noise level in CNEL at the location of the outside dining area of the restaurant will be less than 60 dBA. Therefore the noise limit of 60 dBA of the city of Carlsbad will not be violated. 8 . I I I I I I I I I I I I I I I I I I I REFERENCES 1. (U.S.) Federal Highway Administration, Washington D.C. Dec. 1978, P881-194227. 2. DEPARTMENT OF TRANSPORTATION, Office of Transportation Labo- ratory: "California Vehicles Noise Emission Levels". (Calveno) Feb. 28, 1985. 3. Review Comments of the Acoustical study submitted by Carson Development Inc. 4. CALTRANS: "Traffic Volumes California State Highways, District 11, 1979-1991. 5. CALTRANS: 11 1990 Annual Average Daily Truck Traffic on the California State Highway System". November 1991. 6. Wyle Laboratories. Development of Ground Transportation System Noise Contours for the San Diego Region. Wyle Research Report. WCR 73-8. Dec. 1973. Jack W. Swing. 9. - Q 7. Il l ~ _j - - 0. . S~ \ I I ➔,z : •· 90 9 9 - 0 S ? !I U 9 ) lZ t z e 'IW O l ! l l : : l '0 0 1 1 1 0 UI S • ·,n z • 1 t n s PIO H tl l p l l f "'i ' i SZ L 9 NQ I S 1 l \ 3 i j NQ U . d l : : D S : : x : J 3.l Y O ON 'O N I 'J J ' f ; ! W d 0 1 3 1 \ 3 0 NO S H V O f- - - - - - - - + - - + - - - - 1 li3 d 0 1 3 A 3 0 t- - - - - - - - - + - - - + - - - - - < ~ il l ~~ ::, - ; : ; : i~ \- ; ; : \l. . 0~ < 1. Cf ~ <f 7. ~ 1i . Cl ,: , - j \- ~ ~ \U _g ~ a_ ~ ~~ ~· - 63 ~ r- - -- - - - - I I. v1 N 1 : 1 0 : 1 1 1 v : > 'a v a s 1 1 : 1 v : > 31 1 : ! 0 N 73 0 03 S V d -" ' - , H3 1 N 3 : : > Ol f f v ' ~- ' 1 '. ; . ' . . \ NV 7 d 3d V : > S O N V 7 A! : I V N I I N l 7 3 ! : l d NV 7 d 31 1 S 31 1 J J . 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READINGS TAK[N OUTSiDE THE E'XIT [ND OP' A CAR WA~~ \lA TtJ l "'"' ..._._, ' -- I I I I I I 95 I 90 85 I 80 I -r· .,-, I _] I -( ' W7~ I 0 65 I 60 55 I 50 I 45 1 I I I I I I STRIPPER SOUND LEVELS ---....... ------ 't, ••••• 15 H,P, MODEL 90T WITHOUT SILENCER t1 ~ IMI 15 H, P. MODEL 90T WI TH SILENCER !:>H<H> 15 H.P. HODEL 90XS WITH SILENCER 3 i; & 7 9 2 3 4 6!.79fl 10 100 DISTAf\JCE \ ' J -..J j K ' ~ ti :t '-:: ' I ---.. --·-·--~ STof<Y . .AR&A \_ 1 I JI Sf'AI---IIGH COL -0 Lf\ Cl r cG -z "° - P er N .\01,,, OJ n~ Lor:~--,-· 1 0 ¥ _. __ vl,..Vl.:, ......,_ .c,. ! _______ I t ::ST GR,D LJNt:::- I, I \ o\ \ ?:, I ;· i 11 • ~ ~ 116 I ' i ! :-•• I, ;;_ r::::::- ·115 14 I~ 0 '' lJ.\/ . .•. ti .O' 0: :o iD~O I • f f'l ' ·_, I .P I I c:; 1 II : .,.0 ' 0 1 ii I., ,o I 6 I• .. =o .. \>=--~ 2,. Lf\ 0J -. ~o -' I'? 11 '2-! II 10 I I I '1 I I I I I .. I I F ro 'OV{;,R~~.p 1R~lLI<;;-p .. - p I 11 IJ,0,0 T'(f' · 0 0 • ·.·r4 x.2a F~_(T~P) .. 4./.,Js-C:i -, . 8 '9 . \00 ' __ J I ' ------ ! ,. l --~---~;'-{ .._ PJ,.0-G-"O C.:SL ~~:~·: :_;. '; • '- I l -( I i ~ f ~ . t. '. ' _0_1 _,:0-;t' <-. :,-j'--~~:.._·o::._l.-~o_\/_-,X-J( 6 Lo /I f24x.'24 e,, b l lro ! ; /.. ,"_::.-,. "; 1 I. L _ __,_._-:!:~r-L-_j_--i---1--_J__J__:_j --· .-ToG·. 94 ,-"S- -+-i----~-1:_ _ J • '-~~.~ %00 :: 0 -..,_o .. 0 -· /~IJY 0~Yl~R··· ~IT"Y WA1i::f<:: O --------6 \9 ·14i-.~9 1--Jo.rz.0 091/~1 11 ' . .fbl.. • :·· I ~-----------X--.PASEO DEL. NORTE fE PLAN ' 1 .. ' .. ' ; I I-· I I I I I I I I I I I I I I I I I I I RESET Table 1. MEASUREMENTS Facing Highway #5 at the Western Fence Time(PM) 6:40 6:45 6:47 6:50 6:52 6:55 L,equ (dBA) Start of Measurement 69.0 68.7 69.1 69.4 69:3 7:00 69.4 7:05 69.4 Location of Instrument (Ft) X = 30 y = 8 Location of Instrument: X = 30 Ft from the corner of the western property line Y = 8 Ft being the distance between the instrument and the western property line L,egu. ,Mean = (69.0+68.7+69.1+69.4+69.3+69.4+69.4)/7 = 69.18 dBA = 69. 2 dBA Reset Time (PM) 5:30 5:35 5:37 5:40 5:45 5:50 L,equ. (dBA) Start of Measurement 65.9 64.9 65.7 65.2 65.1 Location of Instrument (Ft.) X = 40 Y = 96 Location of Instrument: X = 40 Ft from the southern property line Y = 9 6 Ft, being the distance between the instrument and the western property line L,egu. ,Mean= (65.9+64.9+65.7+65.2+65.1)/5 = 65.36 dBA = 65.4 dBA I I I I ·1 I I I I I I I I I I I I I I Time(PM) Reset 6:00 6:05 6:15 6:20 6:25 6:30 Table 2. MEASUREMENTS Eastern Side of the Project L,equ. (dBA) Start of Measurement 63.2 65.5* 65.7* 65.7* 66.5* Location of Instrument (Ft.) X = 40 Y = 196 Location of Instrument: X = 40 Ft from the southern property line Y = 196 Ft being the distance between the instrument and the western property line L,egu., Mean= {63.2+65.5+65.7+65.7+66.5)/5 = 65.32 dBA = 65.3 dBA *=Extra Noise due to the Operation of Car Washer at Adjacent Property I I c:-. ' I .. I_ ](}'J-·l 50 1· • -.4l'i,\Ll."'11IC.i-.L I :. j '; :1 L, 11:: 116 p__ .a c-r::. 1--' \'Li~ 0 Li'•lI S SI C1l'; A: i :J r_c:-: ~-~ i-.-. D ~: ? -\ 1_ • .P-.J:mrr=A'.J.tos, Host-r.2arsst ANN=Autos,Nearest ANM=Autos,Mid-Near REI-I RE~1I 1120 130 REM AN=Autos,Near AF=Autos,Far 131 REM 1 135 REM 137 REM 138 REM AFM=Autos,Mid-Far AFF=Autos,Farest AFFF=Autos,Most-Farest MNNN=Medium Trucks,Most-Nearest MNN=Medium Trucks,Nearest MNM=Medium Trucks,Mid-Near MN=Medium Trucks,Near 1 140 REM 141 REM 142 REM 143 REM MF=Medium Trucks,Far 1 144 REM 145 REM 147 REM MFM=Medium Trucks,Mid-Far. MFF=Medium Trucks,Farest MFFF=Medium Trucks,Most-Farest HNNN=Heavy Trucks,Most-Nearest I 150 REM Ok I I I I I I I I I I I lLIST 2RUN 3LOAD 11 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY LIST 151-205 152 REM HNN=Heavy Trucks,Nearest 154 REM HNM=Heavy Trucks,Mid-Near 155 REM HN=Heavy Trucks,Near 156 REM HF=Heavy Trucks,Far 160 REM HFM=Heavy_Trucks,Mid-Far· 161 REM HFF=Heavy Trucks,Farest 170 REM HFFF=Heavy Trucks,Most-Farest 174 REM SANNN=Speed of Autos,Most-Nearest 176 REM SANN=Speed of Autos,Nearest 177 REM SANM=Speed of Autos,Mid-Near 180 REM SAN=Speed of Autos,Near 190 REM SAF=Speed of Autos,Far 191 REM SAFM=Speed of Autos,Mid-Far 195 REM SAFF=Speed of·Autos,Farest 197 REM SAFFF=Speed of Autos,Most-Farest 198 REM SMNNN=Speed of Mid-Trucks,Most-Nearest 200 REM SMNN=Speed of Medium Trucks,Nearest 201 REM SMMN=Speed of Medium Trucks,Mid-Near 202 REM SMN=Speed of Medium Trucks,Near 203 REM SMF=Speed of Medium Trucks,Far 205 REM SMFM=Speed of Medium Trucks,Mid-Far Ok 0SCREE I E_:·-F==S~·-::....:'-~ C1~ ~ -:_-it~_; rr.1.:--L1 _:--••• -~ :· ,.-··_. : :;.~ -. --;~~:;{/:;~~:~~ ~~ i~::~-\'./\:;:~~/~ ,(·;t~~: ~--= ~:~-~ I :; 1 f) f:~:1 s=~=~:·:=-=Su·.:::2•:i oI }I-:::.:-:\.·\; 'Tr1-1:..;::c:, i; ::: ;_-:;~-·-~: ~-,_-1, ~'c'_:1-C•'.T)',·•--r--0-=,·•r1 Of Uc-\r~-r.c1·rur,1·c-r•>(_··-"· .. -1-__, -~L C!..1.-1.1..1·-..:J,.'.:: \._..._.. .... t 1..,...__c.,_ J. -........... ~. 1-.1.-l.. -_._, ~ ._. ._ 220 REI SH?i=Spes::1 of Eeavy Trucks,1I2c1r I 230 RE~ SHF=Sneed of Heavy Trucks,Far 231 REM SHMF=~peed of Hea;y Trucks,Mid-Far 235 REM SHFF=Speed of Heavy Trucks,Farest I 237 REM SEFFF=Speed of Heavy Trucks,Most-Farest 238 REM VANNN=Volume of Autos,Most-Nearest 240 REM VANN=Volume of Autos,Nearest 241 REM VANM=Volume of Autos,Mid-Near I 242 REM VAN=Volume of Autos,Near 243 REM VAF=Volume of Autos,Far 245 REM VAFM=Volume of Autos,Mid-Far I 246 REM VAFF=Volume of Autos, Farest 248 REM VAFFF=Volume of Autos,Most-Farest 254 REM VMNNN=Volume of Medium Trucks,Most-Nearest LIST 255-330 I 256 REM VMNN=Volume of Medium Trucks,Nearest 257 REM VMNM=Volume of Medium Trucks,Mid-Near I I I I I I I I I I I 258 REM VMN=Volume of Medium Trucks,Near 259 REM VMF=Volume of Medium Trucks,Far 260 REM VMFM=Volume of Medium Trucks,Mid-Far 261 REM VMFF=Volume of Medium Trucks,Farest 263 REM VMFFF=Volume of Medium Trucks,Most-Farest 274 REM VHNNN=Volume of Heavy Trucks,Most-Nearest 276 REM VHNN=Volume of Heavy Trucks,Nearest 277 REM VHMN=Volume of Heavy Trucks,Mid-Near 280 REM VHN=Volume of Heavy Trucks,Near 290 REM VEF=Volume of Heavy Trucks,Far 291 REM VHFM=Volume of Heavy Trucks,Mid-Far 295 REM VHFF=Volume of Heavy Trucks,Farest 297 REM VHFFF=Volume of Heavy Trucks,Most Farest 300 REM B=Angle,Total Angle(Hard Site);Computed Integrated Angle(Soft Site) 320 REM D0=Reference Distance 330 REM Dl=Arbitrary Distance,Most-Nearest LIST 331-400 '·· 336 REM D3=Arbltrary-Distance,Nearest 337 REM D4=Arbitrary Distance,Mid-Near 338 REM D5=Arbitrary Distance,Near 339 REM D6=Arbitrary Distance,Far 340 REM D7=Arbitrary Distance,Mid-Far 341 REM D8=Arbitrary Distance,Farest 343 REM Dl0=Arbitrary Distance,Most-Farest 349 REM A=Site Hardness 350 REM G=Grade(%) 360 REM AB=Adjustment of Building or Coverage 362 REM Lij=Leq/H:EQUIVALENT SOUND LEVEL(dBA) FOR A CLASS OF VEHICLES 364 REM WHERE i=l,2,3 (AUTO,MEDIUM TRUCK,HEAVY TRUCK) 365 REM WHERE j=l,2,3,4 (Most-Nearest,Nearest,Mid-Near,Near) 366 REM WHERE j=6,7,8,9 (Far,Mid-Far,Farest,Most-Farest) 367 REM D=PERCENT OF DAYTIME TRAFFIC 368 REM E=PERCENT OF EVENING TRAFFIC 369 REM N=PERCENT OF NIGHTTIME TRAFFIC I I I ' -I / -- ,. .. --.. -, ~, r, I ~. · I ._· ':: i : '·' / ' ... , ~ ,-· .. - ·:. . . , .-. I ,_ I :r_NTER vALli"ES Fo::.~ s.-I~nm I SHNrr, smE✓r, SHN I SHF I SHFM, SHFF ? 89 1 89,89 1 89 1 89 1 89 1 89 ? 89 I I I I I I I I I I I I I I I bl'.I'.C:R VAi,UES FOR SHFFF ? 89 ENTER VALUES FOR VANNN,VANN,VANM,VAN,VAF,VAFM,VAFF ? 1018,1013,1018,1018 1 1018,l0l8,l018 ENTER VALUES FOR VAFFF ? 1018 ENTER VALUES FOR VMNNN,VMNN,VMNM,VMN,VMF,VMFM,VMFF ? 36,36,36,36,36,36,36 ENTER VALUES FOR VMFFF ? 36 ENTER VALUES FOR VHNNN,VHNN,VHNM,VHN,VHF,VHFM,VHFF ? 41,41,41,41,41,41,41 • lLIST 2RUN 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON ENTER VALUES FOR SHNNN,SHNN,SHNM,SHN,SHF,SHFM,SHFF ? 89,89,89,89,89,89,89 ENTER VALUES FOR.SHFFF ? 89 ENTER VALUES FOR VANNN,VANN,VANM,VAN,VAF,VAFM,VAFF ? 1018,1018,1018,1018,1018,1018,1018 ENTER VALUES FOR VAFFF ? 1018 ENTER VALUES FOR VMNNN,VMNN,VMNM,VMN,VMF,VMFM VMFF ? 36,36,36,361 36 1 36 1 36 I ENTER VALUES FOR VMFFF ? 36 ENTER VALUES FOR VHNNN,VHNN,VHNM,VHN,VHF,VHFM,VHFF ? 41,41,41,41,41,41,41 ENTER VALUES FOR VHFFF ? 41 ENTER VALUES FOR B,DO,Dl,D3,D4,D5,D6 ? 180,15,121.4,124.9,128.6,132.2,142 ENTER VALUES FOR D7,D8,D10 ? 145.6,149.3,152.9 ENTER VALUES FOR D,E,N ? 1,0,0 ENTER VALUES FOR A,G,AB ? 0.2,0,0 8TROFF 9KEY 0SCREE I LOANNN= 72.83632 I LOAFF= 72.83632 S13=-2.65551 S11=-2.65551 S23=-17.16996 S21=-17.16996 S33=-16.60515 831=-16.60515 I S17=-2.65551 818= 0 S27=-17.16996 828= 0 S37=-16.60515 838= 0 I S15=-2.65551 816=-2.65551 S36=-16.60515 ADl=-11.34168 AD2=-ll.71436 I AD6=-ll.84484 AD7=-10.89753 L13= 59.13516 Lll= 58.83913 L23= 51.68877 L21= 51.39274 L33= 56.17749 L31= 55.88146 I L15= 58.98302 L16= 58.33597 L35= 56.02535 L36= 55.37831 L17= 59.28328 L18= 0 L27= 51.83689 L28= 0 L37= 55.88146 L38= 0 LEQH(COMBINED)= 69.96843 CNEL= 69.96843 ENTER VALUES FOR D,E,N LOANN= 72.83632 LOAFM= 72.83632 S12=-2.65551 822:;;-17.16996 832=-16.60515 S19= 0 829= 0 814=-2.65551 S24=-17.16996 S34=-16.60515 S110=-2.65551 S210=-17.16996 S310=-16.60515 LOANM= 72.83632 S39= 0 825=-17.16996 S26=-17.16996 S35=-16.60515 AD3=-ll.04565 D8= 0 L12= 58.46645 L22= 51. 02006 L32= 55.50878 L25= 51.53662 L19= 0 L29= 0 L39= 0 AD4=-11.97562 AD9= 0 L14= 58.20519 L24= 50.7588 L34= 55.24752 L26= 50.88958 Lll0= 58.08102 L210= 50.63462 L310= 55.12335 AD5=-ll.1978 ADl0=-12.0998 AFS= 0 I I I I ? . lLIST 2RUN 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY 0SCREEN I I I I I I I I I I I I ,, :-:. L~~ _r._· .:-~ . .:.:, ? 89 f C VJ..LUES FO?. Si-IFFF I EiiTER VALUES FOR SHNNN, SHNN, SH.NM, SHH, SHP, SHFM, SHFF I ? 89,89,89,89,89,89,89 1i..ITER VALUES FO?. SHFFF ? 89 ENTER VALUES FOR VANNN,VANN,VANM,VAN,VAF,VAFM,VAFF I ? 856,856,856,856,856,856,856 ENTER VALUES FOR VAFFF ? 856 I ENTER VALUES FOR VMNNN,VMNN,VMNM,VMN,VMF,VMFM,VMFF ? 30,30,30,30,30,30,30 • ENTER VALUES FOR VMFFF ? 30 I ENTER VALUES FOR VHNNN,VHNN,VHNM,VHN,VHF,VHFM,VHFF ? 34,34,34,34,34,34,34 I I lLIST. 2RUN • 3LOAD" 4SAVE" 5CONT 6, "LPTl 7TRON 8TROFF 9KEY S12=-3.408251 S22=-17.96178 S32=-17.4182 Sl9= 0 S29= 0 Sl4=-3.408251 S24=-17.96178 S34=-17.4182 Sll0=-3.408251 S210=-17.96178 S310=-17.4182 0SCREE I I S13=-3.408251.Sll=-3.408251 S23=-17.96178 S21=-17.96178 S33=-17.4182 S31=-17.4182 S17=-3.408251 S18= 0 S27=-17.96178 S28= 0 S37=-17.4182 S38= 0 S15=-3.408251 S16=-3.408251 S36=-17.4182 S39= 0 S25=-17.96178 S26=-17.96178 S35=-17.4182 I ADl=-10.39654 AD2=-10.73817 AD6=-10.85777 AD7=-9.989401 L13= 59.30289 Lll= 59.03153 L23= 51.81742 L21= 51.54606 L33= 56.28491 L31= 56.01356 Ll5= 59.16342 L16= 58.5703 I L35= 56.14545 L36= 55.55232 Ll7= 59.43867 L18= 0 L27= 51.9532 L28= 0 L37= 56.01356 L38= 0 I LEQH(COMBINED)= 70.15153 CNEL= 70.15153 ENTER VALUES FOR DfE,N I ? 1,0,0 ENTER VALUES FOR A,G,AB ? 0.2,0,0 I I I AD3=-10.12518 D8= 0 L12= 58.68991 L22= 51. 20444 L32= 55.67193 L25= 51. 67796 L19= 0 L29= o L39= 0 AD4=-10.97766 AD9= 0 , L14= 58.45042 L24= 50.96495 L34= 55.43244 L26= 51.08483 Lll0= 58.3366 L210= 50.85113 L310= 55.31862 AD5=-10.26465 ADl0=-11.09148 AFS= 0 I I I I I I I I I I I I I I I I I I I I 1Abk S/13 .• LOANNN= 72.83632 LOAFF= 72.83632 S13=-3.408251 Sll=-3.408251 S23=-17.96178 S21=-17.96178 S33=-17.4182 S31=-17.4182 S17=-3.408251 S18= 0 S27=-17.96178 S28= 0 S37=-17.4182 S38= 0 S15=-3.408251 S16=-3.408251 S36=-17.4182 ADl=-11.34168 AD2=-11.71436 AD6=-11.84484 AD7=-10.89753 L13= 58.38242 Lll= 58.08639 L23= 50.89695 L21= 50.60092 L33= 55.36444 L31= 55.06842 L15= 58.23028 L16= 57.58323 L35= 55.2123 L36= 54.56526 L17= 58.53054 L18= 0 L27= 51.04508 L28= 0 L37= 55.06842 L38= 0 LEQH(COMBINED)= 69.19366 CNEL= 69.19366 ENTER VALUES FOR D,E,N ? LOANN= 72.83632 LOANM= 72.83632 LOAFM= 72.83632 S12=-3.408251 S14=-3.408251 S22=-17.96178 S24=-17.96178 S32=-17.4182 S34=-17.4182 S19= 0 S110=-3.408251 S29= 0 S210=-17.96178 S39= 0 S310=-17.4182 S25=-17.96178 S26=-17.96178 S35=-17.4182 AD3=-ll.04565 D8= 0 L12= 57.71371 L22= 50.22824 L32= 54.69573 L25= 50.74481 L19= 0 L29= 0 L39= 0 AD4=-11. 97562 AD9= 0 L14= 57.45245 L24= 49.96698 L34= 54.43447 L26= 50.09777 LllO= 57.32828 L210= 49.84281 L310= 54.31031 AD5=-ll.1978 ADl0=-12.0998 AFS= 0 lLIST 2RUN 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY OSCREEN . r A., It 'IA. ... i ·-' ·--J • --" • • , • -w ; '. ~ --- ;: ~-. ':-~,. , 8 ~: 1 Z' S 1 ? ;, : ~ _· , [' r •._. --r. --_:·. ;: ,·· r. •. ··- j_• C,;;_-_ ("" .. ,· 1_,; .._''.' •. .!. t • • ·y,;-;· J •• -••• c. ~-I •.·.i ; I :°! s r 8 9 I ~: ~. ; [:, :.:• I 8 • : :~~ i.~ _-:_ -r;;A .. _T_,, ... r_, L~ I-.. o;:._ s:-Ifi.'-t' ::ii"T.cR \').LuES I'OR SHF>~?I,.SE:m,s;-am,E:rr::T,SHr',SHfiI,SHFF I ? 89,89,89,89,89,89,89 P-TTER VALUES FOR S£-IFFF ? 89 I ENTER VALUES FOR VAHKN, VANr,;, VA?E·1, VAN, VAF, VAFH, VAFF ? 856,856,856,856,856,856,856 I ENTER VALUES FOR VAFFF ? 856 ENTER VALUES FOR VMNNN,VMNN,VMNM,VMN,VMF,VMFM,VMFF ? 30,30,30,30,30,30,30 ENTER VALUES FOR VMFFF I ? 30 ENTER VALUES FOR VHNNN,VHNN,VHNM,VHN,VHF,VHFM,VHFF ? 34,34,34,34,34,34,34 I ENTER VALUES FOR VHFFF ? 34 lLIST 2RUN 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY I I I I I I I I I I I ENTER VALUES FOR SHNNN,SHNN,SHNM,SHN,SHF,SHFM,SHFF ? 89,89,89,89,89,89,89 ENTER VALUES FOR SHFFF ? 89 ENTER VALUES FOR VANNN,VANN,VANM,VAN,VAF,VAFM,VAFF ? 856,ssu,856,856,856,856,856 ENTER VALUES FOR VAFFF ? 856 ENTER VALUES FOR VMNNN,VMNN,VMNM,VMN,VMF,VMFM,VMFF ? 30,30,30,30,30,30,30 ENTER VALUES FOR VMFFF ? 30 ENTER VALUES FOR VHNNN,VHNN,VHNM,VHN,VHF,VHFM,VHFF ? 34,34,34,34,34,34,34 ENTER VALUES FOR VHFFF ? 34 ENTER VALUES FOR B,D0,Dl,D3,D4,D5,D6 ? 180,15,206.2,209.7,213.4,217,226.8 ENTER VALUES FOR D7,D8,D10 ? 230.4,234.1,237.7 ENTER VALUES FOR D,E,N ? 1,0,0 ENTER VALUES FOR A,G,AB ? 0.2,0,0 0SCREEN LOANNN= 72.83632 LOANN= 72.83632 I LOAFF= 72.83632 LOAFM= 72.83632 S13=-3.408251 Sll=-3.408251 S12=-3.408251 S14=-3.408251 S23=-17.96178 S21=-17.96178 S22=-17.96178 S24=-17.96178 I S33=-17.4182 S31=-17.4182 S32=-17.4182 S34=-17.4182 S17=-3.408251 S18= 0 S19= 0 S110=-3.408251 S27=-17.96178 S28= 0 S29= 0 S210=-17.96178 S37=-17.4182 S38= 0 S39= 0 S310=-17.4182 S15=-3.408251 S16=-3.408251 S25=-17.96178 S26=-17.96178 S36=-17.4182 ADl=-13.92442 AD2=-14.15462 I AD6=-14.23669 AD7=-13.65837 L13= 55.68199 Lll= 55.50365 L23= 48.19652 L21= 48.01818 I L33= 52.66401 L31= 52.48567 L15= 55.59083 Ll6= 55.19138 L35= 52.57286 L36= 52.1734 L17= 55.7697 L18= 0 I L27= 48.28424 L28= 0 L37= 52.48567 L38= 0 LEQH(COMBINED)= 66.66853 I CNEL= 66.66853 ENTER VALUES FOR D,E,N ? AD3=-13.74609 D8= 0 L12= 55.27345 L22= 47.78799 L32= 52.25548 L25= 48.10537 L19= 0 L29= 0 L39= 0 AD4=-14.31972 AD9= 0 L14= 55.10835 L24= 47.62288 L34= 52.09037 L26= 47.70591 Lll0= 55.02882 L210= 47.54335 L310= 52.01084 LOANM= 72.83632 S35=-17.4182 AD5=-13.83724 ADl0=-14.39926 AFS= 0 I lLIST 2RUN 3LOAD" 4SAVE" 5CONT 6,"LPTl ?TRON 8TROFF 9KEY 0SCREEN I I I I I I I I I I I I I I VALUES FOR I ? 69,69,89,89,89,89,89 rNT2R VALUES FOR SMFFF ? 89 I ENTER VALUES FOR SHNNN,SHNN,SHNM,SHN,SHF,SHFM,SHFF ? 89,89,89,89,89,89,89 ENTER VALUES FOR SHFFF ? 89 I ENTER VALUES FOR VANNN,VANN,VANM,VAN,VAF,VAFM,VAFF ? 969,969,969,969,969,969,969 • ENTER VALUES FOR VAFFF ? 969 I ENTER VALUES FOR VMNNN,VMNN,VMNM,VMN,VMF,VMFM,VMFF ? 34,34,34,34,34,34,34 I I I I I I I I I I I lLIST 2RUN 3LOAD" 4SAVE11 5CONT 6,"LPTl 7TRON 8TROFF 9KEY ENTER VALUES FOR SHNNN,SHNN,SHNM,SHN,SHF SHFM SHFF ? 9 , , . 8 ,89,89,89,89,89,89 ENTER VALUES FOR SHFFF ? 89 ENTER VALUES FOR VANNN,VANN,VANM,VAN,VAF,VAFM,VAFF ? 969,96i,969,969,969,969,969 • ENTER VALUES FOR VAFFF ? 969 ENTER VALUES FOR VMNNN,VMNN,VMNM,VMN VMF VMFM VMFF ? 4 ' , ' . 3 ,34,34,34,34,34,34 ' ENTER VALUES FOR VMFFF ? 34 "ENTER VALUES FOR VHNNN,VHNN,VHNM,VHN VHF VHFM VHFF ? 39 I I I . ,39,39,39,39,39,39 ENTER VALUES FOR VHFFF ? 39 ENTER VALUES FOR B,D0,Dl,D3,D4,D5,D6 ? 180,15,206.2,209.7,213.4,217,226.8 ENTER VALUES FOR D7,D8,D10 ? 230.4,234.1,237.7 ENTER VALUES FOR D,E,N ? 0.76,0.ll,0.13 ENTER VALUES FOR A,G,AB ? 0.2,0,-1.5 0SCREEN I LOANNN= 72.83632 LOAFF= 72.83632 S13=-2.869751 S11=-2.869751 S23=-17.4182 S21=-17.4182 I S33=-16.82234 S31=-16.82234 S17=-2.869751 S18= 0 S27=-17.4182 S28= 0 I S37=-16.82234 S38= 0 S15=-2.869751 S16=-2.869751 S36=-16.82234 ADl=-13.92442 AD2=-14.15462 I AD6=-14.23669 AD7=-13.65837 L13= 54.72048 Lll= 54.54215 L23= 47.2401 L21= 47.06176 I L33= 51.75987 L31= 51.58153 L15= 54.62933 L16= 54.22988 L35= 51.66872 L36= 51.26926 L17= 54.8082 L18= 0 I L27= 47.32781 L28= 0 L37= 51.58153 L38= 0 LEQH(COMBINED)= 65.72463 I CNEL= 69.54092 ENTER VALUES FOR D,E,N ? 1"1.hle 3/13. LOANN= 72.83632 LOAFM= 72.83632 S12=-2.869751 S14=-2.869751 S22=-17.4182 S24=-17.4182 S32=-16.82234 S34=-16.82234 S19= 0 S110=-2.869751 S29= 0 S210=-17.4182 S39= 0 S310=-16.82234 S25=-17.4182 S26=-17.4182 AD3=-13.74609 D8= 0 L12= L22= L32= L25= 54.31195 46.83156 51. 35133 47.14895 L19= 0 L29= 0 L39= 0 AD4=-14.31972 AD9= 0 L14= 54.14685 L24= 46.66646 L34= 51.18623 L26= 46.74949 LllO= 54.06732 L210= 46.58693 L310= 51. 1067 LOANM= 72.83632 S35=-16.82234 AD5=-13.83724 ADl0=-14.39926 AFS= 0 I lLIST 2RUN 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY OSCREEN I I I I I I I I I I I I I I I I I I I I I I I I I I I I I N Ok LIST 100-250 100 REM NOISE REDUCTION DUE TO NOISE BARRIER, FHWA METHOD, ENGLISH UNITS (Ft.) 110 REM ClE=DISTANCE FROM SOURCE TO BARRIER 120 REM C2E=DISTANCE FROM BARRIER TO RECEPTOR 130 REM HE=HEIGHT OF BARRIER ABOVE ROADWAY ELEVATION 140 REM SlE=SOURCE HEIGHT ABOVE ROADWAY 150 REM RE=RECEPTOR HEIGHT WITH RESPECT TO ROADWAY 160 REM T=TEMPERATURE INF 170 REM FR=FREQUENCY IN CPS 211 REM INDEX l=RIGHT SIDE 212 REM INDEX 2=LEFT SIDE 213 REM PR=RIGHT ANGLE FROM THE OBSERVER SIDE 214 REM PL=LEFT ANGLE FROM THE OBSERVER SIDE 220 REM NO=FRESNEL NUMBER, PERPENDICULAR TO SOURCE LINE 230 REM EB=EARTHBERM FACTOR 231 REM RCE=LIMIT HEIGHT OF SOURCE 232 REM LB,LBL=NOISE REDUCTION DUE TO NOISE BARRIER OR EARTH BERM 235 REM LO=O, NO NOISE REDUCTION DUE TO THE HEIGHT OF SOURCE 236 REM LM=THE MAXIMUM POSSIBLE NOISE REDUCTION 250 PRINT Ok lLIST 2RUN 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY OSCREE 1ahlt J. RUN I ENTER VALUES FOR C1E,C2E,HE,S1E,RE,TE,FR ? 450,278,30,2.3,35,68,550 I I I ENTER VALUES FOR EB ? 1 ENTER VALUES FOR PL,PR ? -90,90 Al= 137.4196 Bl= 84.74806 I NO= .1587856 RC= 14.35987 P0=-1.570796 P3=-.6283185 I U0= 7.532272E-08 VS0= 7.533893E-08 Z0= 1.000215 Z3= .6343046 I LBL=-9.485004 Ok C= 222.1181 P7= .6283186 U3= .8071399 VS3= .5119726 Z7= .6343046 DO= 4.953003E-02 Pl0= 1.570796 U7= .8071398 VS7= .5119726 Zl0= 1.000215 DFF= 3.141593 Ul0= 7.532272E-08 VSl0= 7.533893E-08 IU= 2.23177 lLIST 2RUN I 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY 0SCREEN I I I I I I I I I I I I I I I I I I I I I I I I I I I I I Table 10. Comparison of Test Data And Theory Fig. 4, Standard 15 HP No Silencer Fig. 5, Model 90T Without Silencer Distance (Ft) 10 20 30 50 Test (dBA) 85 80 78 74 Theory (dBA) 85 80.7 77.8 73.9 Error (%) 0 0.85 0.25 0.1 100 65 68.3 5.1 Noise Level of Car Wash= 94 -20LOG{(5.5+Distance)/5.5} Distance>= 10 Ft. I Ok 'tAbleJJ. RUN I ENTER VALUES FOR ClE,C2E,HE,SlE,RE,TE,FR ? 610,118,39.5,2.3,35,68,550 ENTER VALUES FOR EB ? 1 I ENTER VALUES FOR PL,PR ? -50,60 I I Al= 186.2734 RC= 14.23296 I P0=-.8726646 U0= 1. 913615 VS0= .7773875 I Z0= .4062403 LBL=-12.67862 Ok· Bl= 35.99255 P3=-.2967059 U3= 2.846974 VS3= .8719862 Z3= .3062854 C= 222.1181 P7= .4712391 U7= 2.652577 VS7= .8572396 Z7= .3231724 DO= .1477966 NO= .4738133 Pl0= 1.047198 OFF= 1.919862 Ul0= 1.488528 VSl0= .7050451 Zl0= .4736525 IU= .6537443 I lLIST 2RUN 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY 0SCREEN I I I I I I I I I I I N I RUN ENTER VALUES FOR ClE,C2E,HE,SlE,RE,TE,FR I ? 106,44,6,4,5,68,550 ENTER VALUES FOR EB ? 0 I ENTER VALUES FOR PL,PR ? -25,80 I I 13.41466 Al= 32.31454 Bl= NO= 2.621969E-02 RC= 2.081842 P0=-.4363323 P3= .1134464 U3= .1636842 VS3== .1473486 Z3= .9002006 U0= .149308 VS0= .1356124 Z0= .9082729 LBL=-5.352346 Ok . C= 45.72103 P7= .8464848 U7= .1091621 VS7= .1016828 Z7= .9314844 DO= 8.178711E-03 Pl0= 1.396263 DFF= 1.832596 Ul0= 2.860736E-02 VSl0= .0280705 Zl0= .9812335 IU= 1.689787 I I I I I I I I I I I I I 2RUN 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY OSCREE lLIST I I I I I I I I I I I I I I I I I I I RUN ENTER VALUES FOR ClE,C2E,HE,SlE,RE,TE,FR ? 620,117,40.3,2.3,35,68,550 ENTER VALUES FOR EB ? 1 ENTER VALUES FOR PL,PR ? -25,60 Al= 189.3306 RC= 14.46915 P0=-.4363323 DFF= 1.48353 U0= 3.107891 VS0= .8889252 Z0= .286022 LBL=-13.20454 Ok Bl= 35.69815 C= 224.8585 P3= 8.726686E-03 DO= .1702423 NO= .5457706 P7= .6021386 Pl0= 1.047198 lLIST 2RUN U3= 3.429047 U7= 2.826075 Ul0= 1.714589 VS3= .9061368 VS7= .8704952 VSl0= .7467197 Z3= .2642532 Z7= .3080227 Zl0= .4355095 IU= .4475505 3LOAD" 4SAVE 11 5CONT 6,"LPTl 7TRON 8TROFF 9KEY 0SCREE I I ENTER VALUES FOR ClE,C2E,HE,SlE,RE,TE,FR ? 145,29,6,4,5,68,550 ENTER VALUES FOR EB I ? 0 ENTER VALUES FOR PL,PR ? -25,43 I I Al= 44.20019 Bl= 8.844454 C= 53.03605 NO= 2.754046E-02 DO= 8.590698E-03 I RC= 1. 95072 P0=-.4363323 P3=-8.028516E-02 DFF= 1.186824 P7= .3944444 Pl0= .7504916 I U0= .1568291 VS0= .1417789 Z0= .9040344 I LBL=-5.448791 Ok lLIST 2RUN I I I I I I I I I I I U3= .1724844 U7= .159754 Ul0= .1265548 VS3= .1544286 VS7= .1441612 VSl0= .1165956 Z3= .8953192 Z7= .9023951 Zl0= .9213052 IU= 1.070304 3LOAD" 4SAVE" 5CONT 6,"LPTl 7TRON 8TROFF 9KEY 0SCREE ,. --AICHAl=IC, A. STUPIN ASSOCIATES --••·-----------------•----••---"-•"-•--••---w•a:.tef.l Architecture, Planning & Engineering PRIME CAR WASH ------------------------------ CITY OF CARLSBAD Prepared by: (!)Id, ,///4) V(ffrd A~~;~side Richard Stupin Associates RICHARD A.TUPIN Aslf>c1ATES . Architecture, Planning & Engineering The information enclosed will document the noise levels from the car wash equipment. To be more specific, the dryer system. Of all the equipment operated within the wash tunnel, the dryer or blower produces the highest sound levels. The dryer will be located approximately where shown on Exhibit 1. This is about 20 feet from the exit opening and about 80 feet from the entrance opening. The proposed dryer system is called the "Stripper" (brand name). The manufacturer supplied a combination of data which is contained in Appendix 1. The data directly provides the noise data for installed units, as well as, other data for units not installed in a tunnel and for close distances·. Th,e following four (4) types are presented: 1. The "standard" or 90T Model 15 hp STRIPPER without silencing package. 2. The 90T Model with silencing package. 3. The 30 hp "UNTOUCHABLE" dryer with silencing package. Note, the layout appears identical to the 90T Model. 4. The 90XS 15 hp Model with silencing package. The "standard" 15 hp 90T Model and 30 hp "UNTOUCHABLE" model with silencer are about equal. The 90T Model with silencer is about 5 dBA more quiet than the "standard" 90T Model. The 90XS 15 hp Model with silencer is about 4 dBA more quiet than the 15 hp 90T Model. Combining this data with the "standard" 15 hp silencer propagation data, three curves can be constructed showing the variation with distance of the four cases. These curves are shown on Exhibit 3. These curves represent the variation with distance directly in front of the exit opening for a unit placed near the opening. I - -- The data off-axis varies somewhat both in magnitude and relationship with distance. The distribution of the sound outside the tunnel has been documented in several tests with different dryer units and found to vary with distance as shown on the curves on Exhibit 4. In these curves, the point of reference is 30 feet outside the tunnel exit opening. ProJected Noise Levels: We will use the worst case scenario, the 15 hp 90T Model or the 30 hp 90T Model. There are two outlets which allow the dryer noise to filter toward the ambient locations. The Noise level at the exit end will be about 80 dBA. The noise level at the entrance end will be about 70 dBA. Using exhibits 3 and 4, the projected noise levels at the locations on Exhibit 2 are shown below: LOCATION 1 LOCATION 2 LOCATION 3 62 dBA 59 dBA 61 dBA Outside ambient levels in those locations will range between 65 and 85 dBA depending on traffic. Based upon the fact that only commercial uses surround the car wash, all conditions should occur with virtually no acoustical mitigation. 0 ' \9 0 ~ 0 p ... , {i \ LUBE-N-TUNI! i-rrt1in :: I 'SITOR!'( ~-I ~,fl-l-&L1 eNG~ 4~ ~f"J_ ,-Ree w,uc; :•· . i,vGl(Htt,o ¢LLJ<; "6"Al-lli:;t-l"c.ot. L :;:;· ~~t, LI~~:- c,~'f1t-l~ ~ ,.~~ ,. 11 IC. '1, I◄ '' 11 11 IP 1 I f" .. • ..... .. • •'~t.: ,,_;.,.,+-....:.,.i~ .. ,:· ..,.,,~/"1'1'Git. -.. ·.· :.=~~ \) ., ______ __.:., _____ ---------·-··-···· EXHI;BIT :1. !Co1J~l",&-..1H, HAP~ t--tar ~u,~et> ~!! Wlf-lT~~f! P~WATE:. ' ,, t 110-0,t,,-..• ---t VltlNITY MAP ~I 1)11.4.Wl'J(')fKl A-1 I r.~-,-11.1,-:: 1-r.19, r'·1•Yt1 f,~ I. d It, • •~ I~ I~ I I If • n I ---··--·•-···•···--------- -- EXHIBIT 3 STRIPPER SOUND LEVELS -85 80 ----.... --------.... ~ ---......_ --..__ -75 --,e ....... ' o.._ <( m 10 0 ..__ '-o 'o...... '-..__ 'o 's '-'-" 65 'Q '- " " 60 " \i " 55 \, • • • • -15 H.P. MODEL 90T WITHOUT SILENCER 50 O~!Hl 15 H.P. MODEL 90T WITH SILENCER O(H)G-e 15 H.P. MODEL 90XS WITH SILENCER 45 2 3 466789 2 3 466799 1 10 100 OISTA!\JCE --EXHIBIT 4 VARIATION OF SOUND WITH DISTANCE 0 \ ' I!> \ 0 -5 \ -10 -15 ~ \ \ ' ' i\ \ \ \ \ ~ \ ~ \ DBA f\ -20 -25 ~ 90 t, \ ~ \ ~ \ \ \ \ i\. \ \ \ \ ' I\ \ \ -30 \ \ ' \ \ \ -35 1000 10 100 DISTANCE FROM EXIT OPENING --RICHAl=IC, A. STUPIN ASSOC.IATES ' ' -------------------------Arch it e o tu re, Planning & Engineering A P P E N D I X 1 NOISE DATA - July, 1991 SUBJECTf SOUND u;\'J:l. H1\P!N('.;S FOR THE Sl'.RIFl'ER DRYING SYSTEM The •ttaehed overview of a Stripp6r dryer •hows the compsr!$on between decibel r•adings taktn from$ r•gular ptoduct1on Stripper end a Stripper with tht qu1~t kit 8dded. Th~ d~e1bel r~Ading1 werA t«ken outoidt our plAnt. ltAdtn3s outside A ear w~•h building would be ~ven lowtr as the sound would be trapped, t~ 8oro~ extent, ~it.hin tht building, Th~ reid~ inu ar~ on the "A" 11eslP. u it rMponds p1.'iroarily to fr~quenciO in th~ 500 to 10,000 H1 rang~ which is the &r~a of grtattst sensitivity to tht human ear, PROTO-VESt INC. ~-.-.-,.,,:,,11A,h~ t.tt. V.t>, '3 O k , fl 1--t e, t-or c.,,..., i' t l---. ~ «' \ €-/..)(, i V, ~ f I'\,(,, 'it -A J< l '5 1-.., f, ~e(/4,,' qc, x S v..., ,-i1..... ·~·,, \ 6 t,..?(_,~ vt ~ P AG~~rr f'I\OTO-Vl!!t, INC. t eoo GU.Sl'IJ: 11rl1fl"T ,,.,, .. , .......... ,.., .. ,.. THU L£0ENt>t @-0£01Bl! lftADll-10$ ON A IIP:OVLA.1' !'"'1PF£lf ~ @ -UO!m! IUOINO~ ~tli A own l(JT -----... --------~----- - i OECIBLE SOUND READINGS FOR THE GOT STRIPPER . o•.,•-i~-9:2 i HU .,.:=;9 -#) L.£0E.ND: - ® d't -------__ ___._....____._____. ,,_______ ______ ~J, ~ 8~ I I I I I I' @ PROTO----VEST INC. i.r O V, -1 2 -9 2 T H U -121 - r I I i I I I I I l @10@ ·, @1~@ I ,~· I I,)' I -···----~ I G~~ -.. -...--·--~--·7· © ....,,~e· -~,..,-.-r!,J-+-....,.,....... @-· @ / ---------·----------..J...i.,.....,....-J,.J..,.-----------.. PROTO-VEST INC. : DECIBEL SOUND READINGS FOR TI~E 90XS STRIPPER t Introducing the ., new Silencing Package for the 15hp Stripper ...___ _____ , __ , •~-----~,.._.-o,•f'•-•·-.. '--i•~-• --•--_.,.w-,, ••t..1• '514 I .._ .,.,.. f F Lll .... ---- 600 Gln~pie • Oxford, MichleEtn 4B371 • (313)628-3600 Toll Free 1-B00-t;:U-821 B .. 'l"I WO -<5'; \~,A(..:. if\~ Fk.,~ ~ '· 1 !ouNOL'A..bWO .. ---· 09LOWER [ 9( p~a) 78 DBa 10ECISL! READINGS 1AK!N OUTSIDE: THE EXIT END Of1 ·A CAR WA~~ UJITI.J ,. ,...~,,.._ .... ,,_,...., ----------