Noise Study for Proposed Mavis Tire

Transcription

1 Noise Study for Proposed Mavis Tire Hyde Park, New York April 4, 2017 Prepared For: Town of Hyde Park Planning Board 4383 Albany Post Road Hyde Park, NY Prepared By: Novus Engineering, P.C. 25 Delaware Avenue Delmar, NY (518)

2 Noise Study for Proposed Mavis Tire Store Hyde Park, New York Table of Contents 1.0 INTRODUCTION METHODOLOGY EQUIPMENT REGULATORY STANDARDS RESULTS AND FINDINGS CONCLUSIONS AND PROPOSED MITIGATION... 8 APPENDIX A BASIC ACOUSTICAL CONCEPTS APPENDIX B NOISE LEVELS IMPACT TABLES APPENDIX C MONITORING LOCATIONS APPENDIX D PHOTOGRAPHS OF MONITORING LOCATIONS APPENDIX E LOCAL WEATHER DATA APPENDIX F TABLES OF MEASURED SOUND LEVELS APPENDIX G CALIBRATION CERTIFICATES Environmental Noise Assessment Page 1 Proposed Mavis Tire,

3 Noise Study for Proposed Mavis Tire Store Hyde Park, New York 1.0 INTRODUCTION Novus Engineering ( Novus ) was hired by KARC Planning Consultants to prepare an environmental noise assessment at the proposed Mavis Tire store in Hyde Park, NY. This study was requested pursuant to Hyde Park Planning Board ( Planning Board ) Requirements. General procedures for the study were described in several memoranda prepared by the Planning Board s engineering consultant, Morris Associates. 2.0 METHODOLOGY 2.1 Ambient Readings Hyde Park Four monitoring locations were selected by the Planning Board prior to be evaluated in the noise study ( the study ). The selected locations ranged from 95 to 370 feet away from the proposed Mavis Tire building. Ambient noise monitoring at the selected monitoring locations was carried out on March 24, Monitoring locations 1 and 2 were within clear sight of the facility, while locations 3 and 4 were obscured by buildings in the area. The locations used are indicated on the site map included in Appendix C. Appendix D shows photographs taken at each of the monitoring locations. Weather on the day of sampling was favorable for taking sound level readings. Generally, weather conditions that are unacceptable for taking sound level readings include average wind speeds greater than 10 mph (or significant gusts) and periods of rain or heavy snow. The day of sampling was clear and relatively calm. Temperatures in the morning hours were about 25 F with no wind. The temperature gradually climbed to about 40 F during the day. A slight breeze picked up by mid-morning, and winds measured in the field were usually between 2-3 MPH with occasional gusts up to 6 MPH. Most of the monitoring locations had several inches of hard packed snow present. To the extent that was possible, Novus took care to ensure that the microphone at each location was located away from large reflective surfaces or nearby noise sources. The meters at Locations 1 and 3 were configured to continuously measure sound pressure levels in the form of back-toback, fifteen minute readings. For locations and 4 and 2, a single meter was utilized and moved between the sites to manually take fifteen minute readings. The monitoring period was between 8:45 AM and 5:00PM. For each measurement, the equipment was set to record L eq, L 10, L 90, L max, and L min sound levels. A description of these metrics is given in the following section. 2.2 Operating Tire Store Readings Ballston Spa Novus visited an existing operational Mavis Tire facility located in Ballston Spa, NY to take noise readings of existing operations. This Mavis Tire location is set back about 450 feet from a state Environmental Noise Assessment Page 2 Proposed Mavis Tire,

4 highway with fairly light traffic. This allowed Novus to capture the noise generated by the store operation without significant interference from other ambient noise. The site visit to the Ballston Spa Mavis Tire location was conducted on February 24, Weather on the day of sampling was favorable for taking sound level readings. Temperatures ranged from the high 50 s to low 60 s. The morning of sampling was cloudy and there was virtually no wind. Three monitoring locations were selected and set up around the Mavis Tire building. The locations were anywhere from 40 to 65 feet away from the Mavis Tire building. Two of the monitoring locations were within clear sight of the Mavis Tire building, while the third location was partially obscured by tree cover but the vegetation was not dense enough to impact the readings. The monitoring locations are indicated on the site map included in Appendix C. Photographs taken at each of the monitoring locations at the Ballston Spa site are included Appendix D. Noise readings were taken during 15 minute periods when there was active maintenance work occurring at the tire center. Readings were taken while maintenance work was done with the garage doors closed and again while the garage doors were open. The monitoring period was between 10:30am and 12:00pm. For each measurement, the equipment was set to record L eq, L 10, L 90, L max, and L min sound levels. As noted above, a description of these metrics is given in the following section. During the monitoring period, seven of the eight bays were in continuous operation. With doors open the operations were clearly audible at the front location, less so at the side location, and barely audible at the back location. When all the doors were closed, the levels dropped considerably at the front location, but did not change significantly at the other locations since they were so low with either the doors open or closed. 2.3 Analysis Approach As a part of this study, Novus measured (or calculated) several different parameters that help to describe the acoustical environment at the Hyde Park and Ballston Spa locations. A brief explanation of each parameter is provided below. L eq or LA eq is the equivalent continuous sound level that, over a given time period, conveys the same sound energy as the actual time-varying sound. L 10 is a statistical level which represents the sound level exceeded for 10% of the measurement time. This value represents the higher noise levels measured during a sampling period. L 90 is the sound level that is exceeded 90% of the time. This value is widely used to approximate the background sound level (without contributions from louder, transient levels). L max and L min are the highest and lowest short term values measured over a given period of time. These measurements can be based on the either Fast or Slow time constants. For this study, the Fast constant was used. It should be noted that the series of L 10, L 90, L max, and L min levels presented in this report were computed for each of the 15-minute measurements recorded at each location. Environmental Noise Assessment Page 3 Proposed Mavis Tire,

5 Note that the letter A that is sometimes included in these parameters (e.g. LA eq or LA 90) designates that the reported levels are A-weighted values. Use of A-weighting is commonly used in when evaluating environmental noise levels, this weighting correlates well with the human ear s response to noise. However, it is common to see these parameters written without the A included for simplicity, even though the reported values are A-weighted. For the purpose of this study, it should be assumed that all reported db values are A-weighted. The A is sometimes omitted in the name of brevity. For further discussion of acoustical concepts, please refer to Appendix A. 3.0 EQUIPMENT The equipment used to conduct the sound level monitoring at the Hyde Park and Ballston Spa locations included one Rion NL-31 Type 1 sound level meter with model UC53A microphone and NH21 preamplifier, and one NL-21 Type 2 sound level meter with model UC52 microphone and NH21 preamplifier. The third sound level meter used was a Norsonic Nor118 Type 1 sound level meter with a model 1225 microphone and 1206 preamplifier. Each meter was equipped with windscreens. The sound meters were affixed to tripods at a height of approximately 4.5 feet above the ground. Noise level measurements at each location were taken in conformance with ASTM E , Standard Guide for Measurement of Outdoor A-Weighted Sound Levels and ASTM E , Standard Test Method for Conducting Outdoor Sound Measurements Using a Digital Statistical Analysis System. These standards are the most commonly referenced guidelines for conducting environmental noise surveys. The acoustical calibrator used in the study was laboratory calibrated less than one year before the study was conducted. A dated laboratory calibration certificate for the acoustical calibrator is included in Appendix G. Each meter was field calibrated at the start of the study and again after measurements were completed. The calibrator used was a Rion model NC-74, 94.0 db, 1,000 Hz acoustical calibrator which meets the Class 1 requirements of ANSI S and IEC 60942:2003. This calibrator received a laboratory calibration inspection on 10/20/16. Periodic field calibration of sound level meters is necessary to ensure that measurements are accurate to within an acceptable tolerance. Field calibration checks are necessary due to the sensitive nature of the equipment. The measured field calibration drift of the sound meters during the study was found to never exceed 0.2 db. This small amount of drift is well within the ASTM-recommended 1.0 db tolerance. The measured drift for each meter is shown in Table 1 and Table 2 below. Environmental Noise Assessment Page 4 Proposed Mavis Tire,

6 Table 1: Measured Calibration Drift of Sound Level Meters Between Beginning and End of Study at Hyde Park Sound Level Meter (By Monitoring Location) Calibration Drift (db) Within Acceptable Tolerance (+/- 1 db) Location 1 (14 Pine Woods Lane) -0.2 Yes Location 2 (5 Crumwold Place) 0.2 Yes Location 3 (4260 Albany Post Road) -0.1 Yes Location 4 (4290 Albany Post Road) 0.2 Yes Table 2: Measured Calibration Drift of Sound Level Meters Between Beginning and End of Study at Ballston Spa Sound Level Meter (By Monitoring Location) Calibration Drift (db) Within Acceptable Tolerance (+/- 1 db) Location 1 (Front of Mavis Tire) -0.1 Yes Location 2 (Side/North of Mavis Tire) 0.1 Yes Location 3 (Back of Mavis Tire) 0.1 Yes 4.0 REGULATORY STANDARDS The Town of Hyde Park has a general noise policy in place in order to prevent excessive or unreasonable noises (Section 75.1 of the Town Code). However, this general policy has no specific numerical guidelines, and in the absence of this information the Town Planning Board requested a noise study to be conducted using the DEC Noise Guidance as a method to evaluate the noise impact of the proposed Mavis Tire project. This method is commonly used in such situations. The method requires establishment of ambient noise levels at receptor locations surrounding the project, and then requires calculations projecting the increase in ambient levels that would occur with the addition of the project. The Guidance categorizes the level of impact based on the level increase in A- weighted decibels (db(a)). The DEC Guidance document is a complex document and discusses evaluation of impacts in a number of places. The primary section most often referred to is entitled Thresholds for Significant Sound Pressure Level (SPL) Increase and is quoted below: The goal for any permitted operation should be to minimize increases in sound pressure level above ambient levels at the chosen point of sound reception. Increases ranging from 0-3 db should have no appreciable effect on receptors. Increases from 3-6 db may have potential for adverse noise impact only in cases where the most sensitive of receptors are present. Sound pressure increases of more than 6 db may require a closer analysis of impact potential depending on existing SPLs and the character of surrounding land use and receptors. SPL increases approaching 10 db result in a perceived [emphasis added] doubling of SPL. An increase of 10 db(a) deserves consideration of avoidance and mitigation measures in most cases. Environmental Noise Assessment Page 5 Proposed Mavis Tire,

7 It also states that: The addition of any noise source, in a nonindustrial setting, should not raise the ambient noise level above a maximum of 65 db(a). This would be considered the upper end limit since 65 db(a) allows for undisturbed speech at a distance of approximately three feet. Novus Engineering used these guidelines when analyzing the noise data collected to assess noise impacts of the proposed Mavis Tire store in Hyde Park. 5.0 RESULTS AND FINDINGS To evaluate noise impacts of the proposed Mavis Tire store, Novus used the following procedure: Determined ambient noise levels at four locations in Hyde Park, NY Determined actual noise levels of an existing Mavis Tire store in Ballston Spa, NY Adjusted tire store noise for distances to receptors in Hyde Park Added adjusted tire store noise to the ambient levels Determined dba increase from pre-project to post-project conditions as required by DEC noise guidance Compared level increases to DEC standards Noise Levels for Mavis Tire Store Ballston Spa The Ballston Spa Mavis Tire was very active throughout the entire sampling. The store had 7 out of their 8 work bays utilized and active throughout the sampling period. Sampling was done during periods of time with the bay doors open and again when the bay doors were closed. The store s manager made note that in the summer months, the store often generally does work with the garage doors open. Noise from the garage consisted of talking, air wrenches, the rim machine, occasional hammering, and arriving and leaving cars. At the side location, average noise levels were very slightly higher while the doors were open (49.9 dba) compared to noise levels when the doors were closed (48.7 dba). On the rear side of the Mavis Tire building, average noise levels were relatively equal with open and closed doors, and very little noise from the working operations were noticed on this side. The majority of the noise was from traffic on Rowland Street. In front of the store there was a considerable difference in levels with the open doors compared to closed doors (12.4 dba). The raw monitoring data is shown in Tables F5, F6, and F7 in Appendix F Noise Levels near Proposed Mavis Tire Hyde Park Ambient noise at receptors 1, 2, and 3 was dominated by traffic noise primarily from Albany Post Road (Route 9). Average ambient noise levels for receptor 2 and 3 were high, which is typical near a busy street with steady traffic. Average ambient noise levels were highest for receptor 4 which was located on the sidewalk by the El Guacamole restaurant and directly next to traffic on Albany Post Road. Traffic noise was consistent at this location. Ambient noise levels were considerably lower at receptor 1, which is to be expected considering the site was Environmental Noise Assessment Page 6 Proposed Mavis Tire,

8 screened from traffic noise by buildings, some vegetation, and a rock outcrop near the proposed store. Similarly, a second large rock outcrop that is about 20 feet tall is located on the property of 14 Pine Woods Road and will further buffer the property from noise generated from the proposed Mavis Tire Store. The raw monitoring data is shown in Tables F1, F2, F3, and F4 in Appendix F Noise Impact Analysis Novus evaluate impacts using two different approaches: In the first analysis we utilized the Leq (equivalent noise level) for both the tire store noise and the ambient data. This analysis represents the average condition over the course of the day. In the second analysis, we compared the minimum ambient noise for all 15-minute periods with the 15-minute Leq data from the tire store. For this analysis, we reviewed data to determine the time of day which had the lowest ambient noise level and would therefore have the highest increase over ambient noise. The minimum ambient levels were selected and then corrected to represent Sunday traffic volumes on Albany Post Road in Hyde Park. The correction for changes in traffic volumes between Thursday (day of sampling) and Sunday for each hour of sampling are shown in the table below. Note that Sunday traffic volumes are higher than traffic on Thursday except for the early morning (9am-10pm) and late afternoon (3pm-5pm). Table 3. Corrections for Hourly Traffic for both Thursday and Sunday. Hour Thursday Sunday Traffic Traffic Correction 9am-10am am-11am am-12pm pm-1pm pm-2pm pm-3pm pm-4pm pm-5pm The results are shown in Tables B1 and B2. For each receptor both door open and door closed conditions were evaluated. The tire store noise factor selected (front, side, back) corresponds to the relationship of the receptor location to the proposed tire store. Noise levels at location 1 and 4 were adjusted for the proposed number of bays facing the receptor. The tire facility has two bays on the north and five bays on the east. Therefore, the data for El Guacamole was adjusted to represent the noise generated by 2 of the 7 bays monitored in Ballston Spa. The noise from five bays was used for the 14 Pine Woods location. Finally, there are additional attenuation factors included for sites depending in intervening barriers that help to block noise. The type of barrier assumed and the attenuation factor used are also shown in the table. Solid barriers can significantly reduce noise levels at the receptor. Environmental Noise Assessment Page 7 Proposed Mavis Tire,

9 Only location 2 had a clear line of site to the proposed Mavis Tire building and has no additional attenuation. Locations 3 and 4 had several buildings between the monitoring site and the proposed Mavis Tire. Location 1 had a large rock berm (about 20 feet tall) and some vegetation between the monitoring location and the proposed Mavis Tire. Novus used minimal barrier attenuation assumptions for intervening buildings and the berm located to the east of the proposed site. Detailed analysis for such complex conditions such as this are beyond the scope of this study. Leq Comparison - At receptors 2, 3, and 4, there is zero to 0.1 db impact for both door open and door closed cases. This level of impact is virtually nil. At receptor 1, an increase of 7.2 db is predicted with the doors open and 1 db with doors closed. The doors open impact is slightly above the level that may have the potential for adverse noise impact in cases where the most sensitive receptors are present according to the DEC noise guidance. Note that the combined noise level at receptor 1 is predicted to be 52.1 db which is still far below the 65 db upper end limit called out in the DEC guidance for non-industrial settings. Note that the combined levels are near or above 65 db at sites 3 and 4, but this is entirely due to existing traffic noise, not the tire store noise. Worst Hour Comparison This case evaluates the worst 15 minute period. At receptors 2, 3, and 4, increase over ambient is still less than 1 db. At Receptor 1, the increase is 10.3 db with doors open and 1.8 with doors closed during the 9am-10am hour. Note that the combined level is still only 51.6 db, which is well below the DEC s 65 db limit for non-industrial areas. Recall that the average traffic noise levels at the monitoring sites near route 9 are 65 to 68 db. The level of increase at Receptor 1 is high because of the very low existing ambient levels at this relatively sheltered location. However, the DEC noise guidance states that an increase of 10 db(a) deserves consideration of avoidance and mitigation measures in most cases. 6.0 CONCLUSIONS AND PROPOSED MITIGATION Locations 2, 3, and 4 will not likely experience any significant impact from the noise generated from the proposed Mavis Tire store. All three of these locations have no noticeable increase in noise in either the average or worst case noise scenarios. As noted in the DEC Noise Guidelines, increases ranging from 0-3 db should have no appreciable effect on receptors. Under average conditions, with the Mavis Tire operating with open doors there will be an estimated noise increase of 7.2 dba at Location 1. As noted in the DEC Noise Guidelines, this level of increase may have potential for adverse noise impact only in cases where the most sensitive of receptors are present. Under the same average conditions with the Mavis Tire operating with the doors closed, there would be little to no effect on noise at Location 1. The worst time period analysis indicates that with Mavis Tire operating with the doors open, there would be an estimated noise increase of 10.3 dba at location 1, but only 1.8 db with doors closed. It is important to note that this estimated worst case scenario would not be the typical or usual situation and will occur for short periods of time. Also note that the former market located at 4280 Albany Post Road screens the residence and much of the 14 Pine Woods property from the proposed tire store. This building is 24 feet high Environmental Noise Assessment Page 8 Proposed Mavis Tire,

10 and would provide even far greater attenuation than the berm. Only the southern lawn of the property will see this level of increase. In view of the worst case increase predicted for receptor 1, Novus recommends that noise mitigation measures be built in to the new facility. This can be done by adding acoustically absorptive materials to the interior of the proposed building. This will lower noise levels both inside and outside of the building. There are several mitigation measures that should be considered during final design of the facility. The first is to provide an acoustically absorbent ceiling rather than an open steel deck. This can be done by coating the ceiling with inches of a bonded cellulose acoustical spray (such as International Cellulose K-13). This will dramatically reduce reflection of sound off the ceiling and will have a significant impact on the noise levels exiting the facility. The second measure is to provide additional absorption on the walls at strategic locations. This can be done a number of ways, including the K-13 product mentioned above, use of slotted acoustical block on the interior walls, or use of high density fiberglass acoustical panels. The selection and placement of these materials can only be done during the final architectural design of the building. Based on prior experience, we predict that implementation of these mitigation measures will achieve a 4-6 db reduction in noise both inside and outside the facility. With the addition of these mitigation measures, the increases in noise at Receptor 1 for the will be reduced to about 1 to 3 db for the average case and to 4 to 6 db for the worst hour case. Impacts at the other receptors will be further reduced, but they are already negligible. Environmental Noise Assessment Page 9 Proposed Mavis Tire,

11 APPENDIX A: BASIC ACOUSTICAL CONCEPTS Noise Study Proposed Mavis Tire Page A-1

12 Sound Pressure Level and the Decibel Scale Sound intensity, or loudness, is commonly measured in terms of sound pressure. Generally speaking, sound pressure is the amplitude of the vibration of air caused by a sound source, and is commonly measured in units called Pascals. The human ear is sensitive to a very large range of sound pressures, from 20 micropascals to over 10,000,000 micropascals. In order to make the numbers more manageable, a logarithmic sound pressure scale, known as the decibel scale (denoted db ), is used. Each increase of 10 db in sound pressure level (SPL) is equivalent to 3.2 times greater sound pressure. For analysis of environmental noise the A-weighted decibel scale, or dba scale, is generally used. This scale assigns weights to the different frequencies present in a complex sound in proportion to the human ear s sensitivity and assigns one dba value to the sound. The dba scale provides a good measure of a person s ability to perceive the loudness of a sound. In terms of human perception, a 10 db increase is generally considered a doubling of the perceived sound level. A 6 db increase is noticeable. A 3 db increase is barely noticeable. Less than a 3 db change is not generally perceptible in an outdoor environment. A sound is typically described as noise when it is characterized as being excessively loud, unpleasant, or undesired. Long-term average decibel levels are measured in a unit called the equivalent continuous sound level, abbreviated L eq. This is the steady noise level, which in a given period of time would contain the same sound energy as the time-varying sound during the same time period. With this unit, a single decibel level can be assigned to a long-term sound level measurement, even if the sound level changes continuously during the measurement. This type of measurement is useful for assessing environmental noise levels and is the most common measure reported by sophisticated sound analyzing equipment. Another type of measurement unit is the day-night average sound level (L dn). L dn is a measure of the 24-hour A-weighted equivalent sound level (L eq), with a 10 db penalty applied to nighttime levels. Typically, nighttime is specified as the period between 10:00 p.m. and 7:00 a.m., while daytime makes up the remainder of the 24-hour day. The L dn is computed as a time-weighted, logarithmic average of the sound levels measured over a continuous 24-hour period, including the nighttime penalty. For example, a noise source that is measured at 55 db during the day and 45 db during the night will have an L dn exactly equal to 55 db. Alternately, a continuous 55 db level over a 24-hour period would correspond to an L dn of 61.4 db. Tonality of Sounds The frequency or pitch of a sound is measured in cycles per second, or Hertz (Hz). The human ear is sensitive to sound frequencies ranging from about 20 Hz (the lowest notes on a large pipe organ) to over 15,000 Hz (the highest bird calls). Most environmental sounds consist of a complex mixture of frequencies for example wind in the trees or the sound of running water. By contrast, sounds generated by machines or musical instruments can have dominant pure tones, and be more noticeable for this reason. In the natural environment, hundreds, if not thousands of individual sounds make up the total sound that we hear. Humans have the ability to separate all of these individual sounds and focus attention on those that are important, such as a child crying or a telephone ring. Much of the Noise Study Proposed Mavis Tire Page A-2

13 background sound is ignored despite the fact that these sounds exist in thousands of different frequencies. On an integrating sound level meter, an individual sound is characterized by the set of frequencies that it exhibits and the pressure in db of the sound at each frequency. Some sounds have a very limited frequency pattern and are tonal in nature. When heard, they exhibit a particular musical pitch. When tonal sounds are considered noise, the tonal nature generally adds to the negative perception. Figure A1: Sound Pressure Levels of Typical Sounds The figure above shows sound levels of common sounds according to their decibel level and their pressure level in micropascals. Note that the decibel levels are measured on the A-weighted decibel scale, dba. Noise Study Proposed Mavis Tire Page A-3

14 Noise Attenuation When sound travels from its source, the sound pressure level (SPL) measured at a point further from the source typically will be lower than the SPL measured closer to the source. The reason for this difference is that the sound is attenuated by the surrounding environment. There are many factors that can contribute to the attenuation of a sound, however five primary mechanisms are as follows: Geometrical Divergence: In an open environment, sound energy spreads outward in all directions from the source. So as one travels further from the noise source, there is less sound energy present within a given area. Over soft ground, sound levels attenuate about 6 db for each doubling of distance. This rule is commonly used in environmental noise analysis. Air Absorption: As sound travels through air, its energy is gradually converted to heat. The conversion rate is dependent on humidity, temperature and the sound wave s frequency. This factor can be significant over large distances, especially at high frequencies. Attenuation by the Ground: Normally, noise is received through two paths: a direct path from the source and one which is reflected from the ground. The amount of attenuation due to the ground depends on the type of ground. Acoustically hard ground, like concrete or water, provides little to no attenuation. Conversely, soft ground, such as grass, provides significant attenuation. Attenuation Due to Foliage: Sparse trees and bushes are poor noise barriers and provide relatively little sound attenuation. Direct foliage attenuation occurs if foliage is dense enough to completely obstruct the view and if it intercepts the path of sound propagation. Vegetated areas provide good ground attenuation by keeping the ground soft and porous. Attenuation by Barriers: A solid barrier that blocks the line of sight between the source and the receiver can provide a substantial level of attenuation. Buildings, walls, earth berms, or other features that block the line of sight all attenuate noise to some degree. However, depending on the geometries involved reflections from walls can reinforce noise levels. Noise Study Proposed Mavis Tire Page A-4

15 APPENDIX B: NOISE IMPACT ANALYSIS TABLES Noise Study Proposed Mavis Tire Page B-1

16 Table B1. Noise Impact Analysis using Leq Levels. Receptor and Location Doors Open/ Closed Distance from Proposed Store (ft) Average Ambient Level Front/ Side/ Rear Tire Store Level Leq Distance to Test Site Receptor (ft) Tire Store Noise at Receptor (dba) 1 - Property Line with 14 Pine Woods Rd Open Front Property Line with 14 Pine Woods Rd Closed Front Additional Attenuation Factor Berm/ Vegetation Berm/ Vegetation Additional Attenuation Tire Store Noise with Attenuation (dba) Combined Level (dba) Increase over Ambient (dba) Lawn of 5 Crumwold Place Open Side None Lawn of 5 Crumwold Place Closed Side None Apt Balcony at 4260 Albany Post Rd Open Rear Building Apt Balcony at 4260 Albany Post Rd Closed Rear Building El Guacamole at 4290 Albany Post Rd Open Front Building El Guacamole at 4290 Albany Post Rd Closed Front Building Note: Tire store noise is adjusted for the 5 bays that are proposed to face receptor 1. Existing tire store noise is adjusted for the 2 bays that are proposed to face receptor 4. Noise Study Proposed Mavis Tire Page B-2

17 Table B2. Noise Impact Analysis Using Minimum Hour Ambient Noise Levels Location Doors Open/ Closed Distance from Proposed Store (ft) Minimum Ambient Hour Minimum Ambient (dba) Front/ Side/ Rear Tire Store Level Leq Distance to Test Site Receptor (ft) Tire Store Noise at Receptor (dba) 1-Property Line with 14 Pine Woods Rd Open 250 9am-10am 41.3 Front Property Line with 14 Pine Woods Rd Closed 250 9am-10am 41.3 Front Additional Attenuatio n Factor Berm/ Vegetation Berm/ Vegetation Add l Attenuation Tire Store Noise with Attenuati on (dba) Combined Level (dba) Increase over Ambient (dba) Lawn of 5 Crumwold Place Open 337 9am-10am 51.5 Side None Lawn of 5 Crumwold Place Closed 337 9am-10am 51.5 Side None Apt Balcony at 4260 Albany Post Rd Open 95 4pm-5pm 62.5 Rear Building Apt Balcony at 4260 Albany Post Rd Closed 95 4pm-5pm 62.5 Rear Building El Guacamole at 4290 Albany Post Rd Open 370 4pm-5pm 65.4 Front Building El Guacamole at 4290 Albany Post Rd Closed 370 4pm-5pm 65.4 Front Building Note: Minimum ambient levels have been corrected for Sunday traffic volumes from the traffic volumes on day of sampling (Thursday). Existing tire store noise is adjusted for the 5 bays that are proposed to face receptor 1. Existing tire store noise is adjusted for the 2 bays that are proposed to face receptor 4. Noise Study Proposed Mavis Tire Page B-3

18 APPENDIX C: MONITORING LOCATIONS Noise Study Proposed Mavis Tire Page C-1

19 ! ( Ballston Spa Monitoring Locations 2! ( Side of building 1 Facing front doors 3! (! ( Rowland Street Rear of building Existing Mavis Tire Location Trieble Avenue Feet Monitoring Sites - Ballston Spa Proposed Mavis Tire Location Saratoga County, New York inch Orthoimagery ¹

20 ! ( Hyde Park Monitoring Locations o ood R Pine W er Full e Lan ad 4! ( El Guacamole (4290 Albany Post Road) Alba o ny P 5 Crumwold Place st R 2! ( Along property line of 14 Pine Woods Road o ad! ( Crum wold P 1 Proposed Mavis Tire Location lace Apartment Balcony (4260 Albany Post Road)! ( 3 Mansion Drive Feet Monitoring Sites - Hyde Park Proposed Mavis Tire Location Dutchess County, New York inch Orthoimagery ¹

21 APPENDIX D: PHOTOGRAPHS OF MONITORING LOCATIONS Noise Study Proposed Mavis Tire Page D-1

22 Figure D1. Monitoring location 1 Property line of 14 Pine Woods Road Figure D2. Monitoring location 1 Property line of 14 Pine Woods Road Noise Study Proposed Mavis Tire Page D-2

23 Figure D3. Monitoring location 2 5 Crumwold Place Figure D4. Monitoring location 2 5 Crumwold Place Noise Study Proposed Mavis Tire Page D-3

24 Figure D5. Monitoring location Albany Post Road Figure D6. Monitoring location 4 El Guacamole at 4290 Albany Post Road Noise Study Proposed Mavis Tire Page D-4

25 Figure D7. Monitoring location 4 El Guacamole at 4290 Albany Post Road Figure D8. Vegetated/rocky area to the east of the proposed Mavis Tire location Noise Study Proposed Mavis Tire Page D-5

26 Figure D9. Vegetated/rocky area to the east of the proposed Mavis Tire location Figure D10. Berm between 14 Pine Woods Road and proposed Mavis Tire Noise Study Proposed Mavis Tire Page D-6

27 Figure D11. Berm between 14 Pine Woods Road and proposed Mavis Tire Figure D12. Monitoring outside existing Mavis Tire location in Ballston Spa, NY Noise Study Proposed Mavis Tire Page D-7

28 APPENDIX E: LOCAL WEATHER DATA Noise Study Proposed Mavis Tire Page E-1

29 Figure E1. Local Weather Data for Hyde Park March 24, Noise Study Proposed Mavis Tire Page E-2

30 Figure E2. Local Weather Data for Ballston Spa - February, 24, Noise Study Proposed Mavis Tire Page E-3

31 APPENDIX F: TABLES OF MEASURED SOUND LEVELS Noise Study Proposed Mavis Tire Page F-1

32 Table F1. Ambient Noise Measurements Collected at Hyde Park Monitoring Location 1: Property Line of 14 Pine Woods Road (March 24, 2017). Reading Date Time LAeq LAmax LAmin LA10 LA50 LA90 1 3/23/2017 8:22 AM /23/2017 8:59 AM /23/ :02 AM /23/ :22 AM /23/ :42 AM /23/ :06 AM /23/ :21 AM /23/ :41 AM /23/ :04 PM /23/ :29 PM /23/ :44 PM /23/2017 1:05 PM /23/2017 1:26 PM /23/2017 1:41 PM /23/2017 1:56 PM /23/2017 2:17 PM /23/2017 2:32 PM /23/2017 2:47 PM /23/2017 3:02 PM /23/2017 3:27 PM /23/2017 3:42 PM /23/2017 4:02 PM /23/2017 4:31 PM Noise Study Proposed Mavis Tire Page F-2

33 Table F2. Measurements Collected at Hyde Park Monitoring Location 2: 5 Crumwold Place (March 24, 2017). Reading Date Time LAeq LAmax LAmin LA10 LA50 LA90 1 3/23/2017 9:26 AM /23/ :05 AM /23/ :45 AM /23/ :24 AM /23/ :10 PM /23/ :54 PM /23/2017 1:38 PM /23/2017 2:20 PM /23/2017 2:59 PM /23/2017 3:39 PM /23/2017 4:19 PM /23/2017 4:57 PM Noise Study Proposed Mavis Tire Page F-3

34 Table F3. Measurements Collected at Hyde Park Monitoring Location 3: Apartment Balcony at 4260 Albany Post Road, (March 24, 2017). Reading Date Time LAeq LAmax LAmin LA10 LA50 LA90 1 3/23/2017 8:50 AM /23/2017 9:05 AM /23/2017 9:20 AM /23/2017 9:35 AM /23/2017 9:50 AM /23/ :05 AM /23/ :20 AM /23/ :35 AM /23/ :50 AM /23/ :05 AM /23/ :20 AM /23/ :37 AM /23/ :52 AM /23/ :07 PM /23/ :22 PM /23/ :37 PM /23/ :52 PM /23/2017 1:17 PM /23/2017 1:32 PM /23/2017 1:47 PM /23/2017 2:02 PM /23/2017 2:17 PM /23/2017 2:32 PM /23/2017 3:00 PM /23/2017 3:15 PM /23/2017 3:30 PM Noise Study Proposed Mavis Tire Page F-4

35 27 3/23/2017 3:45 PM /23/2017 4:00 PM /23/2017 4:15 PM /23/2017 4:30 PM Table F4. Measurements Collected at Hyde Park Monitoring Location 4: Sidewalk at El Guacamole Restaurant at 4290 Albany Post Road (March 24, 2017). Reading Date Time LAeq LAmax LAmin LA10 LA50 LA90 1 3/23/2017 9:07 AM /23/2017 9:47 AM /23/ :24 AM /23/ :06 AM /23/ :47 AM /23/ :29 PM /23/2017 1:15 PM /23/2017 2:02 PM /23/2017 2:39 PM /23/2017 3:20 PM /23/2017 3:59 PM /23/2017 4:39 PM Noise Study Proposed Mavis Tire Page F-5

36 Table F5. Measurements Collected at Ballston Spa Monitoring Location 1: Front of Mavis Tire Store (February 24, 2017). Reading Date Time LAeq LAmax LAmin LA10 LA50 LA90 Comment 1 2/24/ :29: Doors closed 2 2/24/ :39: Doors closed 3 2/24/ :52: Doors open 4 2/24/ :06: Doors open Table F6. Measurements Collected at Ballston Spa Monitoring Location 2: Side/North of Mavis Tire Store (February 24, 2017). Reading Date Time LAeq LAmax LAmin LA10 LA50 LA90 Comment 1 2/24/ :31: Doors closed 2 2/24/ :55: Doors open 3 2/24/ :21: Doors open 4 2/24/ :43: Doors closed Table F7. Measurements Collected at Ballston Spa Monitoring Location 3: Back of Mavis Tire Store (February 24, 2017). Reading Date Time LAeq LAmax LAmin LA10 LA50 LA90 Comment 1 2/24/ :31: Doors closed 2 2/24/ :54: Doors open 3 2/24/ :45: Doors closed Noise Study Proposed Mavis Tire Page F-6

37 APPENDIX G: CALIBRATION CERTIFICATES Noise Study Proposed Mavis Tire Page G-1

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