Abbott Road Rehabilitation Project. Noise Study Report

Transcription

1 Abbott Road Rehabilitation Project Noise Study Report Abbott Road Rehabilitation Project from Lake Otis Parkway to Birch Road STATE OF ALASKA Department of Transportation and Public Facilities Central Region Division of Design and Construction Preliminary Design and Environmental Section Alaska Project No Federal Project No July 2015

2 Summary The purpose of this Noise Study Report (NSR) is to evaluate noise impacts and abatement under the requirements of the 2011 Alaska Department of Transportation and Public Facilities (DOT&PF) Noise Policy (2011 Noise Policy). The 2011 Noise Policy provides procedures for preparing operational and construction noise studies and evaluating noise abatement considered for federal and federal-aid highway projects. The proposed Abbott Road Rehabilitation Project proposes to rehabilitate two miles of Abbott Road between Lake Otis Parkway and Birch Road. Proposed improvements include widening the road to accommodate a two-way left-turn lane, an additional Eastbound thru lane at Lake Otis Parkway, lengthened crest vertical curves, rehabilitation of the existing pathway from Lake Otis Parkway to Trailside Elementary driveway, and a right turn lane from eastbound Abbott Road onto Birch Road. The proposed project is considered a Type I project according to 23 CFR 772 because it would add an auxiliary travel lane to Abbott Road. A noise analysis is required for all Type I projects. A Type I project is defined in 23 CFR 772 as follows: Proposed federal or federal aid highway project for the construction of a highway on a new location or the physical alteration of an existing highway, which substantially changes either the horizontal or vertical alignment, increases the number of through-traffic lanes, or adds an auxiliary lane. Terrain in the project area is generally rolling with roadway grades ranging from flat to a maximum of approximately 6.4 percent. Existing land uses in the project area include residential, open space/recreational, commercial, institutional, industrial, medical, and undeveloped land uses. However, the land uses affected by the proposed project include single-family residential, open space/recreational (Ruth Arcand Park), institutional (schools), medical uses, and a hotel. The primary source of noise in the project area is traffic from Abbott Road. Traffic noise level predictions were made with the Federal Highway Administration (FHWA) Traffic Noise Model (TNM ) Version 2.5 (FHWA, 2004). Using traffic volumes, speeds, roadway alignments, and cross-sections for the project, the predicted future plus project noise levels were compared to existing ambient noise levels and to applicable noise abatement criteria (NAC) to assess the project s potential noise impacts. This noise analysis evaluates noise exposure in terms of the hourly equivalent sound level (Leq) during noisiest traffic hour and compares predicted traffic noise levels to federal and state NAC and to existing noise levels to assess impacts. The peak-traffic-noise-hour Leq describes the noise level that is equivalent to the energy Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 i

3 Summary average noise levels that would be measured continuously during the hour producing the highest traffic noise during a typical 24-hour period. Five noise level measurements were conducted at representative locations to document the existing ambient noise environment and calibrate the noise prediction model with concurrent traffic counts and measured vehicle speeds. Noise measurements were taken in areas representative of sensitive land uses closest to Abbott Road. The existing noise levels measured were between 62.5 and 66.1 A-weighted decibels (dba) in the project area. A total of 87 noise sensitive receptors that represent the residential areas, Ruth Arcand Park, institutional uses (schools), medical facilities, a hotel, and undeveloped land along the project corridor were modeled and evaluated for potential noise impacts resulting from traffic noise. Existing, Future No Build, and Future Plus Project (Build) noise levels were computed for the 87 noise-sensitive receptors. The predicted project Build noise levels were compared to existing noise levels and to the applicable NAC to assess potential projectrelated noise impacts. None of the 87 modeled receptors in the project area exceed the applicable NAC under Future Plus Project conditions. Therefore, the project would not create a noise impact at any sensitive receptors in the project area, and consideration of noise abatement measurements was not required. During construction of the project, noise from construction activities may intermittently dominate the noise environment in the immediate area of construction. No adverse noise impacts from construction are anticipated because construction would be conducted in accordance with the 2011 Noise Policy, federal regulation 23 CFR 772, and the Anchorage Municipal Charter. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 ii

4 Table of Contents Page Chapter 1. Introduction Purpose of the Noise Study Report... 1 Chapter 2. Project Description... 2 Chapter 3. Fundamentals of Traffic Noise Sound, Noise, and Acoustics Frequency Sound Pressure Levels and Decibels Addition of Decibels A-Weighted Decibels Human Response to Changes in Noise Levels Noise Descriptors Sound Propagation Geometric Spreading Ground Absorption Atmospheric Effects Shielding by Natural or Human-Made Features Chapter 4. Federal Regulations and State Policies Federal Regulations CFR State Regulations and Policies Utah Department of Transportation Noise Abatement Policy Chapter 5. Study Methods and Procedures Methods for Identifying Land Uses and Selecting Noise Measurement and Modeling Receiver Locations Field Measurement Procedures Existing Sound Level Measurements Traffic Noise Levels Prediction Methods Methods for Identifying Traffic Noise Impacts and Consideration of Abatement Chapter 6. Existing Noise Environment Existing Land Uses Noise Measurement Results Existing Sound Level Measurements Existing Noise Levels Chapter 7. Future Noise Environment, Impacts, and Considered Abatement Future Noise Environment and Impacts Chapter 8. Construction Noise Chapter 9. References Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 iii

5 Table of Contents Appendix A Traffic Data... A-1 Table A-1. Traffic Data for Existing Conditions Table A-2. Traffic Data for Projected Year (2035) No Build Table A-3. Traffic Data for Projected Year (2035) Plus Project Conditions Appendix B Predicted Future Noise Levels... B-1 Table B-1. Predicted Traffic Noise Levels Appendix C Supplemental Data... C-1 Appendix D 2011 DOT&PF Noise Policy... D-1 Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 iv

6 Table of Contents List of Exhibits Page Exhibit 1. Regional Vicinity... 3 Exhibit 2. Site Vicinity... 4 Exhibit 5a. Noise Monitoring and Modeling Locations Exhibit 5b. Noise Monitoring and Modeling Locations Exhibit 5c. Noise Monitoring and Modeling Locations List of Tables Page Table 3-1. Typical A-Weighted Noise Levels... 7 Table 4-1. Activity Categories and Noise Abatement Criteria Table 6-1. Summary of Existing Sound Level Measurements Table 6-2. Comparison of Measured to Predicted Sound Levels in the TNM Model Table 6-3. Existing Traffic Noise Levels Table 7-1. Predicted Traffic Noise Levels Table 8-1. Construction Equipment Noise Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 v

7 List of Abbreviated Terms CFR Code of Federal Regulations CNEL Community Noise Equivalent Level db Decibels DOT&PF Alaska Department of Transportation and Public Facilities FHWA Federal Highway Administration ft Feet HOV High Occupancy Vehicle facilities Hz Hertz khz Kilohertz L dn Day-Night Level L eq Equivalent Sound Level L eq(h) Equivalent Sound Level over one hour L max Maximum Sound Level L xx Percentile-Exceeded Sound Level mpa micro-pascals mph miles per hour NAC noise abatement criteria NEPA National Environmental Policy Act NSR noise study reports SPL sound pressure level TNM 2.5 FHWA Traffic Noise Model Version 2.5 Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 vi

8 Chapter 1. Introduction 1.1. Purpose of the Noise Study Report The purpose of this Noise Study Report (NSR) is to evaluate noise impacts and abatement under the requirements of Title 23, Part 772 of the Code of Federal Regulations (23 CFR 772) Procedures for Abatement of Highway Traffic Noise. 23 CFR 772 provides procedures for preparing operational and construction noise studies and evaluating noise abatement considered for federal and federal-aid highway projects. According to 23 CFR 772.3, all highway projects that are developed in conformance with this regulation are deemed to be in conformance with Federal Highway Administration (FHWA) noise standards. The Alaska Department of Transportation and Public Facilities (DOT&PF) Noise Policy, dated April 2011 (2011 Noise Policy), provides DOT&PF policy for implementing 23 CFR 772 in Alaska. The 2011 Noise Policy outlines the requirements for preparing noise study reports. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

9 Chapter 2. Project Description DOT&PF proposes to rehabilitate two miles of Abbott Road between Lake Otis Parkway and Birch Road; refer to Exhibit 1, Regional Vicinity, and Exhibit 2, Site Vicinity. Proposed improvements include widening the road to accommodate a two-way left-turn lane, an additional eastbound through lane at Lake Otis Parkway, lengthened crest vertical curves, rehabilitation of the existing pathway from Lake Otis Parkway to Trailside Elementary, and a right turn lane from eastbound Abbott Road onto Birch Road. Within the limits of the project, Abbott Road is a two-lane Minor Arterial roadway (one lane in each direction), with a posted speed limit of 45 miles per hour (mph) throughout the study area. All travel lanes are 12 feet wide. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

10 CHUKCHI SEA Barrow HARRISON BAY Prudhoe Bay BEAUFORT SEA Alaska Nome Fairbanks Canada NORTON SOUND Delta Tok Anchorage Valdez Whitehorse Seward Project Site Juneau BERING SEA BRISTOL BAY Kodiak GULF OF ALASKA Ketchikan PACIFIC OCEAN Project Site not to scale 06/15/15 JN MAS ABBOTT ROAD REHABILITATION PROJECT NOISE STUDY REPORT Regional Vicinity Exhibit 1

11 LAKE OTIS PKWY BIRCH BIRCH RD RD OUR OUR RD RD JUPITER JUPITER DR DR ELMORE ELMORE RD RD E 84TH AVE E 88TH AVE ABBOTT RD Project Site SENTRY DR SOURCE: Google Earth Aerial, 2015 not to scale 06/15/15 JN MAS ABBOTT ROAD REHABILITATION PROJECT NOISE STUDY REPORT Site Vicinity Exhibit 2

12 Chapter 3. Fundamentals of Traffic Noise The following is a brief discussion of fundamental traffic noise concepts. For a detailed discussion, please refer to DOT&PF s 2011 Noise Policy, which is available on DOT&PF s Web site at: Sound, Noise, and Acoustics Sound can be described as the mechanical energy of a vibrating object transmitted by pressure waves through a liquid or gaseous medium (e.g., air) to a hearing organ, such as a human ear. Noise is defined as loud, unexpected, or annoying sound. In the science of acoustics, the fundamental model consists of a sound (or noise) source, a receiver, and the propagation path between the two. The loudness of the noise source and obstructions or atmospheric factors affecting the propagation path to the receiver determines the sound level and characteristics of the noise perceived by the receiver. The field of acoustics deals primarily with the propagation and control of sound Frequency Continuous sound can be described by frequency (pitch) and amplitude (loudness). A low-frequency sound is perceived as low in pitch. Frequency is expressed in terms of cycles per second, or Hertz (Hz) (e.g., a frequency of 250 cycles per second is referred to as 250 Hz). High frequencies are sometimes more conveniently expressed in kilohertz (khz), or thousands of Hertz. The audible frequency range for humans is generally between 20 Hz and 20,000 Hz Sound Pressure Levels and Decibels The amplitude of pressure waves generated by a sound source determines the loudness of that source. Sound pressure amplitude is measured in micro-pascals (mpa). One mpa is approximately one hundred billionth ( ) of normal atmospheric pressure. Sound pressure amplitudes for different kinds of noise environments can range from less than 100 to 100,000,000 mpa. Because of this huge range of values, sound is rarely expressed in terms of mpa. Instead, a logarithmic scale is used to describe sound pressure level (SPL) in terms of decibels (db). The threshold of hearing for young people is about 0 db, which corresponds to 20 mpa. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

13 Chapter 3 Fundamentals of Traffic Noise 3.4. Addition of Decibels Because decibels are logarithmic units, SPL cannot be added or subtracted through ordinary arithmetic. Under the decibel scale, a doubling of sound energy corresponds to a 3-dB increase. In other words, when two identical sources are each producing sound of the same loudness, the resulting sound level at a given distance would be 3 db higher than one source under the same conditions. For example, if one automobile produces an SPL of 70 db when it passes an observer, two cars passing simultaneously would not produce 140 db rather, they would combine to produce 73 db. Under the decibel scale, three sources of equal loudness together produce a sound level 5 db louder than one source A-Weighted Decibels The decibel scale alone does not adequately characterize how humans perceive noise. The dominant frequencies of a sound have a substantial effect on the human response to that sound. Although the intensity (energy per unit area) of the sound is a purely physical quantity, the loudness or human response is determined by the characteristics of the human ear. Human hearing is limited in the range of audible frequencies as well as in the way it perceives the SPL in that range. In general, people are most sensitive to the frequency range of 1,000 8,000 Hz, and perceive sounds within that range better than sounds of the same amplitude in higher or lower frequencies. To approximate the response of the human ear, sound levels of individual frequency bands are weighted, depending on the human sensitivity to those frequencies. Then, an A-weighted sound level (expressed in units of dba) can be computed based on this information. The A-weighting network approximates the frequency response of the average young ear when listening to most ordinary sounds. When people make judgments of the relative loudness or annoyance of a sound, their judgments correlate well with the A-scale sound levels of those sounds. Other weighting networks have been devised to address high noise levels or other special problems (e.g., B-, C-, and D-scales), but these scales are rarely used in conjunction with highway-traffic noise. Noise levels for traffic noise reports are typically reported in terms of A-weighted decibels or dba. Table 3-1, Typical A-Weighted Noise Levels, describes typical A-weighted noise levels for various noise sources. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

14 Chapter 3 Fundamentals of Traffic Noise Table 3-1. Typical A-Weighted Noise Levels Common Outdoor Activities Noise Level (dba) Common Indoor Activities 110 Rock band Jet fly-over at 1000 feet 100 Gas lawn mower at 3 feet 90 Diesel truck at 50 feet at 50 mph Food blender at 3 feet 80 Garbage disposal at 3 feet Noisy urban area, daytime Gas lawn mower, 100 feet 70 Vacuum cleaner at 10 feet Commercial area Normal speech at 3 feet Heavy traffic at 300 feet 60 Large business office Quiet urban daytime 50 Dishwasher next room Quiet urban nighttime 40 Theater, large conference room (background) Quiet suburban nighttime 30 Library Quiet rural nighttime Bedroom at night, concert 20 Broadcast/recording studio 10 Lowest threshold of human hearing 0 Lowest threshold of human hearing 3.6. Human Response to Changes in Noise Levels As discussed above, doubling sound energy results in a 3-dB increase in sound. However, given a sound level change measured with precise instrumentation, the subjective human perception of a doubling of loudness will usually be different than what is measured. Under controlled conditions in an acoustical laboratory, the trained, healthy human ear is able to discern 1-dB changes in sound levels, when exposed to steady, single-frequency ( pure-tone ) signals in the midfrequency (1,000 Hz 8,000 Hz) range. In typical noisy environments, changes in noise of 1 to 2 db are generally not perceptible. However, it is widely accepted that people are able to begin to detect sound level increases of 3 db in typical noisy environments. Further, a 5-dB increase is generally perceived as a distinctly noticeable increase, and a 10-dB increase is generally perceived as a doubling of loudness. Therefore, a doubling of sound energy (e.g., doubling the volume of traffic on a highway) that would result in a 3-dB increase in sound, would generally be perceived as barely detectable. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

15 Chapter 3 Fundamentals of Traffic Noise 3.7. Noise Descriptors Noise in our daily environment fluctuates over time. Some fluctuations are minor, but some are substantial. Some noise levels occur in regular patterns, but others are random. Some noise levels fluctuate rapidly, but others slowly. Some noise levels vary widely, but others are relatively constant. Various noise descriptors have been developed to describe time-varying noise levels. The following are the noise descriptors most commonly used in traffic noise analysis. Equivalent Sound Level (Leq): Leq represents an average of the sound energy occurring over a specified period. In effect, Leq is the steady-state sound level containing the same acoustical energy as the time-varying sound that actually occurs during the same period. The 1-hour A-weighted equivalent sound level (Leq[h]) is the energy average of A-weighted sound levels occurring during a one-hour period, and is the basis for noise abatement criteria (NAC) used by DOT&PF and FHWA. Percentile-Exceeded Sound Level (Lxx): Lxx represents the sound level exceeded for a given percentage of a specified period (e.g., L10 is the sound level exceeded 10 percent of the time, and L90 is the sound level exceeded 90 percent of the time). Maximum Sound Level (Lmax): Lmax is the highest instantaneous sound level measured during a specified period. Day-Night Level (Ldn): Ldn is the energy average of A-weighted sound levels occurring over a 24-hour period, with a 10-dB penalty applied to A-weighted sound levels occurring during nighttime hours between 10 p.m. and 7 a.m. Community Noise Equivalent Level (CNEL): Similar to Ldn, CNEL is the energy average of the A-weighted sound levels occurring over a 24-hour period, with a 10- db penalty applied to A-weighted sound levels occurring during the nighttime hours between 10 p.m. and 7 a.m., and a 5-dB penalty applied to the A-weighted sound levels occurring during evening hours between 7 p.m. and 10 p.m Sound Propagation When sound propagates over a distance, it changes in level and frequency content. The manner in which noise reduces with distance depends on the following factors. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

16 Chapter 3 Fundamentals of Traffic Noise Geometric Spreading Sound from a localized source (i.e., a point source) propagates uniformly outward in a spherical pattern. The sound level attenuates (or decreases) at a rate of 6 decibels for each doubling of distance from a point source. Highways consist of several localized noise sources on a defined path, and hence can be treated as a line source, which approximates the effect of several point sources. Noise from a line source propagates outward in a cylindrical pattern, often referred to as cylindrical spreading. Sound levels attenuate at a rate of 3 decibels for each doubling of distance from a line source Ground Absorption The propagation path of noise from a highway to a receiver is usually very close to the ground. Noise attenuation from ground absorption and reflective-wave canceling adds to the attenuation associated with geometric spreading. Traditionally, the excess attenuation has also been expressed in terms of attenuation per doubling of distance. This approximation is usually sufficiently accurate for distances of less than 200 feet. For acoustically hard sites (i.e., sites with a reflective surface between the source and the receiver, such as a parking lot or body of water,), no excess ground attenuation is assumed. For acoustically absorptive or soft sites (i.e., those sites with an absorptive ground surface between the source and the receiver, such as soft dirt, grass, or scattered bushes and trees), an excess ground-attenuation value of 1.5 decibels per doubling of distance is normally assumed. When added to the cylindrical spreading, the excess ground attenuation results in an overall drop-off rate of 4.5 decibels per doubling of distance Atmospheric Effects Receptors located downwind from a source can be exposed to increased noise levels relative to calm conditions, whereas locations upwind can have lowered noise levels. Sound levels can be increased at large distances (e.g., more than 500 feet) from the highway due to atmospheric temperature inversion (i.e., increasing temperature with elevation). Other factors such as air temperature, humidity, and turbulence can also have significant effects Shielding by Natural or Human-Made Features A large object or barrier in the path between a noise source and a receiver can substantially attenuate noise levels at the receiver. The amount of attenuation provided by shielding depends on the size of the object and the frequency content of the noise source. Natural terrain features (e.g., hills and dense woods) and human-made features (e.g., buildings and walls) can substantially reduce noise levels. Walls are often Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

17 Chapter 3 Fundamentals of Traffic Noise constructed between a source and a receiver specifically to reduce noise. A barrier that breaks the line of sight between a source and a receiver will typically result in at least 5 db of noise reduction. Taller barriers provide increased noise reduction. Vegetation between the highway and receiver is rarely effective in reducing noise because it does not create a solid barrier. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

18 Chapter 4. Federal Regulations and State Policies This report focuses on the requirements of 23 CFR 772 and the 2011 DOT&PF Noise Policy, as discussed below Federal Regulations CFR CFR 772 provides procedures for preparing operational and construction noise studies and evaluating noise abatement considered for federal and federal-aid highway projects. Under 23 CFR 772, projects are categorized as Type I, Type II, or Type III projects. FHWA defines a Type I project as a proposed federal or federal-aid highway project for the construction of a highway on a new location, or the physical alteration of an existing highway which substantially changes either the horizontal or vertical alignment, or increases the number of through-traffic lanes. A Type II project is a noise barrier retrofit project that involves no changes to highway capacity or alignment. DOT&PF does not participate in Type II projects. Type III federal projects are those that neither meet the definitions of Type I or Type II and for which a noise analysis is not required and no consideration of noise abatement is warranted. Type I projects include those that create a completely new noise source, as well as those that increase the volume or speed of traffic or move the traffic closer to a receiver. Type I projects include the addition of an interchange, ramp, auxiliary lane, or truck-climbing lane to an existing highway, or widening an existing ramp by a full lane width for its entire length. Projects unrelated to increased noise levels, such as striping, lighting, signing, and landscaping projects, are not considered Type I projects. Under 23 CFR 772, noise abatement must be considered for Type I projects if the project is predicted to result in a traffic noise impact. This process involves identification of noise abatement measures that are reasonable, feasible, and likely to be incorporated into the project, and of noise impacts for which no apparent solution is available. Traffic noise impacts occur when the predicted noise level in the design year approaches or exceeds the NAC specified in 23 CFR 772, or a predicted noise level substantially exceeds the existing noise level (a substantial noise increase). 23 CFR 772 does not specifically define the terms substantial increase or approach; these criteria are defined in the 2011 Noise Policy, as described below. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

19 Chapter 4 Federal Regulations and State Policies Table 4-1, Activity Categories and Noise Abatement Criteria, summarizes the federal NAC corresponding to various land use activity categories. Activity categories and related traffic noise impacts are determined based on the actual land use in a given area. Activity Category A B Table 4-1. Activity Categories and Noise Abatement Criteria FHWA NAC, Hourly A-Weighted Sound Level (dba-leq[h]) Evaluation Location Exterior Exterior Description of Activities Lands on which serenity and quiet are of extraordinary significance and serve an important public need and where the preservation of those qualities is essential if the area is to continue to serve its intended purpose. Residential. Active sports areas, amphitheaters, auditoriums, campgrounds, cemeteries, day care centers, hospitals, libraries, medical facilities, parks, picnic areas, places of worship, playgrounds, 67 C Exterior public meeting rooms, public or nonprofit institutional structures, radio studios, recording studios, recreation areas, Section 4(f) sites, schools, television studios, trails and trail crossings. Auditoriums, day care centers, hospitals, libraries, medical D 52 facilities, places of worship, public meeting rooms, public or Interior nonprofit institutional structures, radio studios, recording studios, schools, and television studios. E 72 Hotels, motels, offices, restaurants/bars, and other developed Exterior lands, properties or activities not included in A-D or F. F None None Agriculture, airports, bus yards, emergency services, industrial, logging, maintenance facilities, manufacturing, mining, rail yards, retail facilities, shipyards, utilities (water resources, water treatment, electrical), and warehousing. G None None Undeveloped lands that are not permitted. In identifying noise impacts, primary consideration is given to exterior areas of frequent human use. In situations where there are no exterior activities, or where the exterior activities are far from the roadway or physically shielded in a manner that prevents an impact on exterior activities, the interior criterion (Activity Category D) is used as the basis for determining a noise impact State Regulations and Policies Alaska Department of Transportation and Public Facilities Noise Policy The 2011 Noise Policy describes DOT&PF s implementation of the requirements of the FHWA Noise Standard at 23 CFR 772. The 2011 Noise Policy defines a noise increase as substantial when the predicted future worst case noise level with project Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

20 Chapter 4 Federal Regulations and State Policies implementation is greater than or equal to an increase of 15 dba over the existing noise level. The 2011 Noise Policy also states that a sound level is considered to approach a NAC level when the sound level is within 1 dba of the NAC identified in 23 CFR 772 (e.g., 66 dba is considered to approach the NAC of 67 dba, but 65 dba is not). The 2011 Noise Policy provides detailed technical guidance for the evaluation of highway traffic noise. This includes field measurement methods, noise modeling methods, and report preparation guidance. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

21 Chapter 5. Study Methods and Procedures 5.1. Methods for Identifying Land Uses and Selecting Noise Measurement and Modeling Receiver Locations A field investigation was conducted to identify land uses that could be subject to traffic and construction noise impacts from the proposed project. Land uses in the project area were categorized by land use type, Activity Category as defined in Table 4-1, and the extent of frequent human use. Although all developed land uses are evaluated in this analysis, the focus is on locations of exterior frequent human use that would benefit from a lowered noise level. Accordingly, this impact analysis focuses on locations with defined outdoor activity areas, such as residential backyards and common use areas at multi-family residences. Five noise measurement locations were selected to represent noise sensitive areas in close proximity to Abbott Road, and also serve as noise modeling locations. Four noise measurement locations represent residential uses, and one measurement location represents a medical use [Anchorage Community Mental Health Services Inc. (Daybreak)]. It is noted that all five noise measurement locations are considered areas of frequent human use and are representative of the ambient noise levels at the sensitive areas closest to Abbott Road. In general, an area of frequent human use is an area where people are exposed to traffic noise for an extended period of time on a regular basis. In addition to the noise measurement locations, several other non-measurement locations were selected as modeling locations Field Measurement Procedures A field noise study was conducted to determine the existing noise environment in the project vicinity. The following is a summary of the procedures used to collect sound level data Existing Sound Level Measurements Sound level data was collected at five locations on Wednesday, May 20, 2015, and Thursday, May 21, 2015, using a Brüel & Kjær Hand-held Analyzer Type 2250 equipped with a Type 4189 pre-polarized microphone. The monitoring equipment complies with applicable requirements of the American National Standards Institute (ANSI) for Type I (precision) sound level meters. Two measurements were taken, each for a 15-minute period at each site (as required by the 2011 Noise Policy). As noted above, four measurements were conducted at residential land uses (Activity Category B), and one Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

22 Chapter 5 Study Methods and Procedures measurement was conducted at a medical land use (Activity Category C). Noise levels ranged between 62.5 and 66.1 dba Leq. The measurement locations are identified in Exhibit 5a through 5c, Noise Monitoring and Modeling Locations. During the measurements, field staff attended the sound level meter. Leq values collected during the measurement period (15 minutes in duration) were logged, and dominant noise sources observed were also identified and logged. Using this approach, times when traffic noise was observed to be a dominant contributor to noise levels could be distinguished from non-traffic noise sources (such as aircraft and lawn equipment) that may have contributed significantly to existing noise levels. Temperature, wind speed, and humidity were recorded manually during the monitoring session. During the measurements, wind speeds typically ranged from 0 to 5 miles per hour (mph), and temperatures ranged from degrees Fahrenheit. Traffic on Abbott was classified and counted during the noise measurements. Vehicles were classified as automobiles, medium-duty trucks, or heavy-duty trucks. An automobile was defined as a vehicle with two axles and four tires that are designed primarily to carry passengers. Small vans and light trucks were included in this category. Medium-duty trucks included all cargo vehicles with two axles and six tires. Heavy-duty trucks included all vehicles with three or more axles. The posted speed on Abbott Road is 45 mph Traffic Noise Levels Prediction Methods Traffic noise levels were predicted using the FHWA Traffic Noise Model Version 2.5 (TNM 2.5). TNM 2.5 is a computer model based on two FHWA reports: FHWA-PD and FHWA-PD (FHWA 1998a, 1998b). Key inputs to the traffic noise model were the locations of roadways, shielding features (e.g., topography and buildings), noise barriers, ground type, and receivers. Three-dimensional representations of these inputs were developed using CAD drawings, aerials, and topographic contours provided. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

23 ARLON ARLON ST ST GRANITE GRANITE PL PL CLARIDGE CLARIDGE PL PL LAKE OTIS PKWY ROCKY COVE DR BELUGA BAY CIR LITTLE BROOK ST KING DAVID DR ABBOTT RD SEAL POINT CIR M SHADY BAY CIR LITTLE LITTLE CREEK CREEK DR DR M LEGEND Modeled Receptor Monitoring and Modeling Location not to scale 06/15/15 JN MAS ABBOTT ROAD REHABILITATION PROJECT NOISE STUDY REPORT Noise Monitoring and Modeling Locations Exhibit 5a

24 SOLAR SOLAR DR DR ELMORE RD CARLSON RD WINCHESTER LOOP KING DAVID DR ABBOTT RD 14 CHIPWOOD CIR CATHEDRAL PL 60 M BIRCH RUN DR SPRUCE RUN CIR M-4 66 QUASAR DR BLUE HERON CIR LEGEND Modeled Receptor Monitoring and Modeling Location not to scale 06/15/15 JN MAS ABBOTT ROAD REHABILITATION PROJECT NOISE STUDY REPORT Noise Monitoring and Modeling Locations Exhibit 5b

25 SLANA TRAIL BIRCH BIRCH RD RD STRUTZ STRUTZ AVE AVE NICKELL CIR BLUE HERON CIR SNOWY OWL CIR SAHALEE DR 82 ABBOTT RD 40 M ABBOTT RD SPRING HILL CIR CHISANA WAY YUKON RD SPRING HILL DR LEGEND Modeled Receptor Monitoring and Modeling Location not to scale 07/07/15 JN MAS ABBOTT ROAD REHABILITATION PROJECT NOISE STUDY REPORT Noise Monitoring and Modeling Locations Exhibit 5c

26 Chapter 5 Study Methods and Procedures Traffic noise was evaluated under existing conditions, design year no-project conditions, and design year conditions with the project alternative. Abbott Road traffic volumes based on a Level of Service (LOS) C traffic volume of 450 vehicles/lane/hour, 1 vehicle classification percentages, and traffic speeds under Existing, Future No Build, and Future Plus Project conditions were input into the traffic noise model. Traffic noise was also modeled for the following cross-streets (and associated speed limits) along Abbott Road: Lake Otis Parkway (45 mph), Elmore Road (45 mph north of Abbott Road, 25 mph south of Abbott Road), Carlson Road (25 mph), Spring Hill Drive (25 mph), and Birch Road (45 mph). LOS C traffic volumes (450 vehicles/lane/hour) were input for the aforementioned cross-streets, and were modeled for Existing, Future No Build, and Future Plus Project conditions. Tables A-1 and A-2 in Appendix A summarize the traffic volumes and assumptions used for modeling existing and designyear conditions with and without the project alternative. To validate the accuracy of the model, TNM 2.5 was used to compare the measured traffic noise levels to modeled noise levels at the field measurement locations (refer to Table 6-1) and were normalized to 1-hour volumes. These normalized volumes were assigned to the corresponding project area roadways to simulate the traffic noise during the actual measurement period. Modeled and measured sound levels were then compared to determine the accuracy of the model and if additional calibration of the model was necessary Methods for Identifying Traffic Noise Impacts and Consideration of Abatement Traffic noise impacts are considered to occur at receptor locations where predicted design year noise levels approach or exceed the NAC for the applicable activity category, or where predicted design-year noise levels are at least 15 dba greater than existing noise levels. Where traffic noise impacts are identified, noise abatement must be considered for reasonableness and feasibility as required by the 2011 Noise Policy. According to the 2011 Noise Policy, abatement measures are considered acoustically feasible if a minimum noise reduction of 5 dba or more is achieved for at least 50 percent of the first row dwelling units, and the abatement measure is considered nonhazardous (i.e., in compliance with the general design principles in the 2011 Noise Policy). Other factors that affect feasibility include topography, access requirements for driveways and ramps, presence of local cross streets, utility conflicts, other noise sources 1 Traffic data provided by Andrew Ooms, Senior Engineer, Kittelson & Associates, Inc., on April 21, Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

27 Chapter 5 Study Methods and Procedures in the area, and safety considerations. The overall reasonableness of noise abatement is determined by considering three factors: (1) viewpoints of the property owners and residents of the benefitted receptors; (2) cost effectiveness; and (3) ability to meet noise reduction design goal. The 2011 Noise Policy defines the procedure for assessing reasonableness of noise barriers from a cost perspective. A cost-per-residence allowance is calculated for each benefited residence (i.e., residences that receive at least 5 dba of noise reduction from a noise barrier). The base allowance for a benefitted receptor is $32,000. In addition, a noise barrier is determined to be reasonable when the noise abatement measure results in a minimum 7 dba noise reduction at 50 percent or more of first row dwelling units. Lastly, the viewpoints of property owners and residents must be solicited to determine if noise abatement is desired (i.e., At least 60 percent of households and property owners surveyed must want the noise abatement measure). Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

28 Chapter 6. Existing Noise Environment 6.1. Existing Land Uses A field investigation was conducted to identify land uses that could be subject to traffic and construction noise impacts from the proposed project. Single-family residences (Activity Category B), Anchorage Community Mental Health Services Inc. (Daybreak, Activity Category C), AK Child & Family (Activity Category C), Trailside Elementary School (Activity Category C), Robert Service High School (Activity Category C), Pacific Northern Academy (Activity Category C), Abbott Loop Community Church (Activity Category C and D), Grace and Truth Community Church (Activity Category C and D), Ruth Arcand Park (Activity Category C), Country Road Manor Bed and Breakfast (Activity Category E), and undeveloped land (Activity Category G) were the identified land uses in the project area. As required by the 2011 Noise Policy, although all developed land uses are evaluated in this analysis, noise abatement is only considered for areas of frequent human use that would benefit from a lowered noise level. Accordingly, this impact analysis focuses on locations with defined outdoor activity areas, such as residential backyards, parks, and common use areas Noise Measurement Results The existing noise environment in the project area is characterized below based on the noise monitoring that was conducted Existing Sound Level Measurements The existing noise environment in the project area is described below based on noise monitoring that was conducted at five representative noise-sensitive receptor locations. The primary source of noise in the project area is traffic along Abbott Road. Table 6-1 summarizes the results of the noise monitoring conducted in the project area. The noise measurement locations are also depicted in Exhibit 5a through 5c. TNM 2.5 was used to compare measured traffic noise levels to modeled noise levels at the field measurement locations (refer to Exhibit 5a through 5c). Table 6-2, Comparison of Measured to Predicted Sound Levels in the TNM Model, compares measured and modeled noise levels at the noise measurement locations M-1 through M-5. The predicted sound levels are within 3 db of the measured sound levels Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

29 Chapter 6 Existing Noise Environment Monitor Number 1 M-1 M-2 M-3 M-4 M-5 and are, therefore, considered to be in reasonable agreement with the measured sound level. Therefore, no calibration of the model was made. Table 6-1. Summary of Existing Sound Level Measurements Address Land Uses Date 9151 Seal Point Circle, Anchorage, AK Dos Circle, Anchorage, AK Chipwood Circle, Anchorage, AK Jupiter Drive, Anchorage, AK Spring Hill Drive, Anchorage, AK Residential Residential Residential Medical Residential May 20, 2015 May 21, 2015 May 21, 2015 May 20, 2015 May 20, 2015 Start Time Duration (minutes) Measured dba Leq Medium Heavy Autos 2 Trucks 2 Trucks 2 EB WB EB WB EB WB Observed Speed (mph) 3:43 p.m :56 p.m :11 p.m :35 p.m :54 p.m Leq = equivalent continuous sound level measured in A-weighted decibels; mph = miles per hour; N/A = Not Applicable; EB = eastbound; WB = westbound Notes: 1. Two 15-minute noise measurements were taken at each noise monitoring location. The measurements depicted in this table represent the noise measurements used to calibrate the TNM2.5 model. All noise monitoring data can be found in Appendix C. 2. Traffic counts were taken during the 15 minute noise measurement. Measurement Position Table 6-2. Comparison of Measured to Predicted Sound Levels in the TNM Model Measured Sound Level (dba) Predicted Sound Level (dba) M M M M M Measured minus Predicted (db) Table B-1 in Appendix B presents existing noise levels at each receiver Existing Noise Levels LOS C traffic volumes and posted vehicle speeds were coded into TNM 2.5 with existing roadway conditions. The results of the existing traffic noise modeling are shown in Table 6-3, Existing Traffic Noise Levels. Currently, none of the modeled receptors exceed the applicable NAC. Exhibit 5a through 5c depicts the locations of the modeled receptor locations. The model input and output data for the existing conditions are included in Appendix B. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

30 Chapter 6 Existing Noise Environment Receptor No. Table 6-3. Existing Traffic Noise Levels Land Use Noise Abatement Category Impact Criteria Measured Noise Level 1,2 Modeled Existing Noise Level 1,2 1 Residence B 66 N/A 62 2 Residence B 66 N/A 62 3 Residence B 66 N/A 63 4 Residence B 66 N/A 61 5 Residence B 66 N/A 58 6 Residence B 66 N/A 62 7 Residence B 66 N/A 63 8 Residence B 66 N/A 62 9 Residence B 66 N/A Undeveloped Land G N/A N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Open Space C 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Light Industrial/Utility F 66 N/A Institutional (Church) C/D 66/51 (interior) N/A 53/ Open Space (Park) C 66 N/A Open Space (Park) C 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Medical C 66 N/A Medical C 66 N/A Residence B 66 N/A Residence B 66 N/A Institutional (Church) C/D 66/51 (interior) N/A 60/ Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A 52 Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

31 Chapter 6 Existing Noise Environment Receptor No. Land Use Noise Abatement Category Impact Criteria Measured Noise Level 1,2 Modeled Existing Noise Level 1,2 53 Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Institutional (School) C 66 N/A Recreational C 66 N/A Residence B 66 N/A Hotel E 71 N/A Residence B 66 N/A Medical C 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Institutional (School) C 66 N/A 57 M-1 Residence B M-2 Residence B M-3 Residence B M-4 Medical C M-5 Residence B Notes: 1. Modeling results are rounded to the nearest decibel. 2. The measured noise levels and modeled noise levels are not directly comparable, as the measured levels consist of ambient noise recorded over a 15-minute time period, while the modeled traffic noise levels were calculated using DOT&PF LOS C traffic volumes of 450 vehicles/lane/hour on Abbott Road, and the following cross-streets: Lake Otis Parkway, Elmore Road, Carlson Road, Spring Hill Drive, and Birch Road. 3. A 20 dba noise attenuation rate was utilized to determine the interior noise levels for standard construction per the U.S. Department of Housing and Urban Development, The Noise Guidebook, March 2009, page 14. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

32 Chapter 7. Future Noise Environment, Impacts, and Considered Abatement 7.1. Future Noise Environment and Impacts Table 7-1, Predicted Traffic Noise Levels, summarizes the traffic noise modeling results for design-year conditions with and without the project. Predicted design-year traffic noise levels with the project are compared to existing conditions and to design-year noproject conditions. The comparison to existing conditions is included in the analysis to identify traffic noise impacts under 23 CFR 772. The comparison to no-project conditions indicates the direct effect of the project. Receptor No. Land Use Table 7-1. Predicted Traffic Noise Levels Noise Activity Category Impact Criteria Measured Noise Level 3 Modeled Existing Noise Level 1,3 Future No Build 1,2,3 Future Plus Project 1,2,3 1 Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Undeveloped Land G N/A N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Open Space C 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Light Industrial/Utility F 66 N/A Institutional (Church) C/D 66/51 (interior) N/A 53/ / /33 4 (interior) (interior) (interior) 32 Open Space (Park) C 66 N/A Open Space (Park) C 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

33 Chapter 7 Future Noise Environment, Impacts, and Considered Abatement Receptor No. Land Use Noise Abatement Category Impact Criteria Measured Noise Level 3 Modeled Existing Noise Level 1,3 Future No Build 1,2,3 Future Plus Project 1,2,3 38 Medical C 66 N/A Medical C 66 N/A Residence B 66 N/A Residence B 66 N/A Institutional (Church) C/D 66/51 (interior) N/A 60/ / /43 4 (interior) (interior) (interior) 43 Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Institutional (School) C 66 N/A Recreational C 66 N/A Residence B 66 N/A Hotel E 71 N/A Residence B 66 N/A Medical C 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Residence B 66 N/A Institutional (School) C 66 N/A M-1 Residence B M-2 Residence B M-3 Residence B M-4 Medical C M-5 Residence B Notes: 1. Modeling results are rounded to the nearest decibel. 2. Future No Build traffic noise volumes are equal to existing volumes, assuming 450 vehicles/lane/hour (i.e., under Future No Build conditions, the Abbott Road alignment/capacity would remain unchanged compared to existing conditions, thus, resulting in the same traffic volumes and noise levels). 3. The measured noise levels and modeled noise levels are not directly comparable, as the measured levels consist of ambient noise recorded over a 15-minute time period, while the modeled traffic noise levels were calculated using DOT&PF LOS C traffic volumes of 450 vehicles/lane/hour for Abbott Road and the following cross-streets: Lake Otis Parkway, Elmore Road, Carlson Road, Spring Hill Drive, and Birch Road. 4. A 20 dba noise attenuation rate was utilized to determine the interior noise levels for standard construction per the U.S. Department of Housing and Urban Development, The Noise Guidebook, March 2009, page 14. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

34 Chapter 7 Future Noise Environment, Impacts, and Considered Abatement Modeling results in Table 7-1 indicate that predicted traffic noise levels for the designyear with-project conditions do not exceed the applicable NAC at any modeled receptors. In addition, no noise-sensitive receptors within the project area would be exposed to a project-related increase in noise levels of 15 db or more. Therefore, the project would not result in traffic noise impacts at any receptors in the vicinity of the project site, and consideration of noise abatement measures is not required. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

35 Chapter 8. Construction Noise During construction of the project, noise from construction activities may intermittently dominate the noise environment in the immediate area of construction. Construction noise is regulated by federal regulation 23 CFR Procedures for Abatement of Highway Traffic Noise and Construction Noise, and the 2011 Noise Policy. Table 8-1, Construction Equipment Noise, summarizes noise levels produced by construction equipment that is commonly used on roadway construction projects. Construction equipment is expected to generate noise levels up to 95 db at a distance of 25 feet, 89 db at 50 feet, and 83 at 100 feet. Noise produced by construction equipment would be reduced over distance at a rate of about 6 db per doubling of distance. Equipment Table 8-1. Construction Equipment Noise Maximum Noise Level (dba at 25 feet) Maximum Noise Level (dba at 50 feet) Maximum Noise Level (dba at 100 feet) Maximum Noise Level (dba at 160 feet) Scrapers Bulldozers Heavy Trucks Backhoe Pneumatic Tools Concrete Pump Source: Federal Transit Administration, Transit Noise and Vibration Impact Assessment, The closest sensitive receptors are located approximately 25 feet to the east of the project construction area. Therefore, these receptor locations could be subject to noise between approximately 86 and 95 dba Lmax generated by construction activities along Abbott Road. However, no adverse noise impacts from construction are anticipated because construction would be conducted in accordance with the 2011 Noise Policy, federal regulation 23 CFR 772, and applicable local noise standards. Construction noise would be short-term, intermittent, and overshadowed by local traffic noise. Further, implementing the following measures would minimize the temporary noise impacts from construction: All equipment will have sound-control devices that are no less effective than those provided on the original equipment. No equipment will have an unmuffled exhaust. The contractor will implement appropriate additional noise mitigation measures, including changing the location of stationary construction equipment, turning off Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

36 Chapter 8 Construction Noise idling equipment, rescheduling construction activity, notifying adjacent residents in advance of construction work, and installing acoustic barriers around stationary construction noise sources. Compliance with the construction hours specified in the Anchorage Municipal Charter (i.e., construction is prohibited between the hours of 10:00 p.m. and 6:00 a.m. during the construction season, 2 or between the hours of 10:00 p.m. and 7:00 a.m. during other months, or at any time on Sundays or state holidays) would be complied with in order to minimize construction noise. The Anchorage Municipal Charter also prohibits construction activities such that the sound level therefrom exceeds an Leq of 80 db(a) at or within a residential, commercial, or industrial real property boundary, or within a noise-sensitive zone during any one hour of the daily period from 6:00 a.m. to 10:00 p.m. during the construction season, or from 7:00 a.m. to 10:00 p.m. during other months. Further, the Contractor shall equip all internal combustion engines with the manufacturerrecommended muffler and shall not operate any internal combustion engine on the job site without the appropriate muffler. 2 Construction season means the period from April 1 through October 31, both dates inclusive, of each year. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

37 Chapter 9. References Alaska Department of Transportation Alaska Environmental Procedures Manual, Noise Policy. April Federal Highway Administration Traffic Noise Model Version 2.5. April. FHWA-PD Washington D.C. Federal Transit Administration Transit Noise and Vibration Impact Assessment. (FTA-VA ) Office of Planning and Environment, Washington, DC. Prepared by Harris Miller Miller & Hanson, Inc. Burlington, MA. Google Earth, Interview, Andrew Ooms, Senior Engineer, Kittelson & Associates, Inc., on April 21, State of Alaska Department of Transportation and Public Facilities, Proposed Highway Project, AMATS: Abbott Rd Rehab Lake Otis to Birch, Project No /53942 (Site Plans), October U.S. Department of Housing and Urban Development, The Noise Guidebook, March Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July

38 Appendix A Traffic Data Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 A-1

39 Table A-1. Traffic Data for Existing Conditions Roadway Segment Number of Lanes Level of Service C Volumes 1 Auto Vehicle Distribution Medium Trucks Heavy Trucks Modeled Traffic Volumes Auto Medium Trucks Heavy Trucks % % % Volume Volume Volume Speed (mph) Abbott Road Lake Otis Parkway to Birch Road Lake Otis Parkway East 88 th Avenue to Sentry Drive 4 1, , Elmore Road Mars Drive to South of Abbott Road /25 2 Carlson Road North of Abbott Road to South of Abbott Road Spring Hill Drive Snowy Owl Court to Spring Hill Circle Birch Road South of Abbott Road Notes: 1. Based on Level of Service C volumes (450 vehicles per lane, per hour). 2. The speed limit along Elmore Road is 25 miles per hour south of Abbott Road. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 A-2

40 Table A-2. Traffic Data for Future No Build Conditions Roadway Segment Number of Lanes Level of Service C Volumes 1 Auto Vehicle Distribution Medium Trucks Heavy Trucks Modeled Traffic Volumes Auto Medium Trucks Heavy Trucks % % % Volume Volume Volume Speed (mph) Abbott Road Lake Otis Parkway to Birch Road Lake Otis Parkway East 88 th Avenue to Sentry Drive 4 1, , Elmore Road Mars Street to South of Abbott Road /25 2 Carlson Road North of Abbott Road to South of Abbott Road Spring Hill Drive Snowy Owl Court to Spring Hill Circle Birch Road South of Abbott Road Notes: 1. Based on Level of Service C volumes (450 vehicles per lane, per hour). 2. The speed limit along Elmore Road is 25 miles per hour south of Abbott Road. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 A-3

41 Table A-3. Traffic Data for Future Plus Project Conditions Roadway Segment Number of Lanes Level of Service C Volumes 1, 2 Auto Vehicle Distribution Medium Trucks Heavy Trucks Modeled Traffic Volumes Auto Medium Trucks Heavy Trucks % % % Volume Volume Volume Speed (mph) Abbott Road Lake Otis Parkway to Birch Road Lake Otis Parkway East 88 th Avenue to Sentry Drive 4 1, , Elmore Road Mars Street to South of Abbott Road /25 3 Carlson Road Spring Hill Drive North of Abbott Road to South of Abbott Road Snowy Owl Court to Spring Hill Circle Birch Road South of Abbott Road Notes: 1. Based on Level of Service C volumes (450 vehicles per lane, per hour). 2. The project is a roadway rehabilitation project, and the proposed improvements would not add capacity to Abbott Road. The project would add turn lanes and lengthen crest vertical curves. Therefore, the Abbott Road roadway widths were extended in the TNM2.5 model to accommodate the proposed turning lanes and other improvements. 3. The speed limit along Elmore Road is 25 miles per hour south of Abbott Road. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 A-4

42 Appendix B Predicted Future Noise Levels This appendix contains tables that summarize the traffic noise modeling results for Existing, Future No Build, and Future Plus Project conditions. This table also includes noise model input and output data. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 B-1

43 Receptor No. Land Use No. of Units Represented Table B-1. Predicted Traffic Noise Levels Noise Abatement Category Impact Criteria Measured Noise Level 3 Modeled Existing Noise Level 1,3 Future No Build 1,2,3 Future Plus Project 1,3 Noise Impact? 1 Residence 1 B 66 N/A No 2 Residence 1 B 66 N/A No 3 Residence 1 B 66 N/A No 4 Residence 1 B 66 N/A No 5 Residence 1 B 66 N/A No 6 Residence 1 B 66 N/A No 7 Residence 1 B 66 N/A No 8 Residence 1 B 66 N/A No 9 Residence 1 B 66 N/A No 10 Undeveloped Land 1 G N/A N/A No 11 Residence 1 B 66 N/A No 12 Residence 1 B 66 N/A No 13 Residence 1 B 66 N/A No 14 Open Space 1 C 66 N/A No 15 Residence 1 B 66 N/A No 16 Residence 1 B 66 N/A No 17 Residence 1 B 66 N/A No 18 Residence 1 B 66 N/A No 19 Residence 1 B 66 N/A No 20 Residence 1 B 66 N/A No 21 Residence 1 B 66 N/A No 22 Residence 1 B 66 N/A No 23 Residence 1 B 66 N/A No 24 Residence 1 B 66 N/A No 25 Residence 1 B 66 N/A No 26 Residence 1 B 66 N/A No 27 Residence 1 B 66 N/A No 28 Residence 1 B 66 N/A No 29 Residence 1 B 66 N/A No 30 Light Industrial/Utility 1 F 66 N/A No 31 Institutional (Church) 1 C/D 66/51 (interior) N/A 53/ / /33 4 No 32 Open Space (Park) 1 C 66 N/A No Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 B-2

44 Receptor No. Land Use No. of Units Represented Noise Abatement Category Impact Criteria Measured Noise Level 3 Modeled Existing Noise Level 1,3 Future No Build 1,2,3 Future Plus Project 1,3 Noise Impact? 33 Open Space (Park) 1 C 66 N/A No 34 Residence 1 B 66 N/A No 35 Residence 1 B 66 N/A No 36 Residence 1 B 66 N/A No 37 Residence 1 B 66 N/A No 38 Medical 1 C 66 N/A No 39 Medical 1 C 66 N/A No 40 Residence 1 B 66 N/A No 41 Residence 1 B 66 N/A No 42 Institutional (Church) 1 C/D 66/51 (interior) N/A 60/ / /43 No 43 Residence 1 B 66 N/A No 44 Residence 1 B 66 N/A No 45 Residence 1 B 66 N/A No 46 Residence 1 B 66 N/A No 47 Residence 1 B 66 N/A No 48 Residence 1 B 66 N/A No 49 Residence 1 B 66 N/A No 50 Residence 1 B 66 N/A No 51 Residence 1 B 66 N/A No 52 Residence 1 B 66 N/A No 53 Residence 1 B 66 N/A No 54 Residence 1 B 66 N/A No 55 Residence 1 B 66 N/A No 56 Residence 1 B 66 N/A No 57 Residence 1 B 66 N/A No 58 Residence 1 B 66 N/A No 59 Residence 1 B 66 N/A No 60 Residence 1 B 66 N/A No 61 Residence 1 B 66 N/A No 62 Residence 1 B 66 N/A No 63 Residence 1 B 66 N/A No 64 Residence 1 B 66 N/A No 65 Residence 1 B 66 N/A No 66 Residence 1 B 66 N/A No Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 B-3

45 Receptor No. Land Use No. of Units Represented Noise Abatement Category Impact Criteria Measured Noise Level 3 Modeled Existing Noise Level 1,3 Future No Build 1,2,3 Future Plus Project 1,3 Noise Impact? 67 Residence 1 B 66 N/A No 68 Residence 1 B 66 N/A No 69 Residence 1 B 66 N/A No 70 Residence 1 B 66 N/A No 71 Institutional (School) 1 C 66 N/A No 72 Recreational 1 C 66 N/A No 73 Residence 1 B 66 N/A No 74 Hotel 1 E 71 N/A No 75 Residence 1 B 66 N/A No 76 Medical 1 C 66 N/A No 77 Residence 1 B 66 N/A No 78 Residence 1 B 66 N/A No 79 Residence 1 B 66 N/A No 80 Residence 1 B 66 N/A No 81 Residence 1 B 66 N/A No 82 Institutional (School) 1 C 66 N/A No M-1 Residence 1 B No M-2 Residence 1 B No M-3 Residence 1 B No M-4 Medical 1 C No M-5 Residence 1 B No Notes: 1. Modeling results are rounded to the nearest decibel. 2. Future No Build traffic noise volumes are equal to existing volumes, assuming 450 vehicles/lane/hour (i.e., under Future No Build conditions, the Abbott Road alignment/capacity would remain unchanged compared to existing conditions, thus, resulting in the same traffic volumes and noise levels). 3. The measured noise levels and modeled noise levels are not directly comparable, as the measured levels consist of ambient noise recorded over a 15-minute time period, while the modeled traffic noise levels were calculated using DOT&PF LOS C traffic volumes of 450 vehicles/lane/hour A 20 dba noise attenuation rate was utilized to determine the interior noise levels for standard construction per the U.S. Department of Housing and Urban Development, The Noise Guidebook, March 2009, page 14. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report B-4

46 Abbott Road Traffic Counts and Model Validation Data Noise Measurement/ Location 1b 2a 2b 3a Date Time Leq (db) Lmin (db) Lmax (db) Peak (db) Direction # Autos 5/20/2015 5/21/2015 5/21/2015 5/21/2015 NOISE MEASUREMENTS 1a 5/20/2015 3:43 p.m b 5/21/2015 3:28 p.m a 4b 5a 5b 5/20/2015 5/20/2015 5/20/2015 5/20/2015 4:03 p.n. 4:56 p.m. 5:12 p.m. 3:11 p.m. 4:35 p.m. 4:57 p.m. 5:38 p.m. 5:54 p.m # Medium Trucks TRAFFIC COUNTS # Heavy Trucks Total % Autos % Medium Trucks % Heavy Trucks Traffic - Adjusted for 1 Hour # Autos # Medium Trucks # Heavy Trucks eastbound % 3% 1% westbound % 3% 1% Total % 3% 1% 1, ,312 eastbound % 2% 0% westbound % 3% 1% Total % 2% 1% 1, ,320 eastbound % 1% 0% westbound % 2% 0% Total % 1% 0% 1, ,468 eastbound % 0% 0% westbound % 1% 0% Total % 1% 0% 1, ,672 eastbound % 3% 0% westbound % 2% 1% Total % 2% 0% 1, ,324 eastbound % 0% 0% westbound % 2% 1% Total % 1% 1% 1, ,272 eastbound % 1% 0% westbound % 1% 1% Total % 1% 0% 1, ,016 eastbound % 1% 0% westbound % 3% 1% Total % 2% 0% 1, ,180 eastbound % 1% 0% westbound % 1% 0% Total % 1% 0% eastbound % 1% 0% westbound % 1% 0% Total % 1% 0% Total

47 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 INPUT: TRAFFIC FOR LAeq1h Volumes PROJECT/CONTRACT: Abbott Road Rehabilitation RUN: Abbott_Existing Roadway Points Name Name No. Segment Autos MTrucks HTrucks Buses Motorcycles V S V S V S V S V S veh/hr mph veh/hr mph veh/hr mph veh/hr mph veh/hr mph Eastbound point point point point point point point point point point point point point point point point point point point point point point point point point C:\TNM25\Program\Abbott\Existing 1 7 July 2015

48 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation point point point point point point point point point point point point42 42 Westbound point point point point point point point point point point point point point point point point point point point point point point point point point C:\TNM25\Program\Abbott\Existing 2 7 July 2015

49 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation point point point point point point point point point point point point46 46 Lake Otis_NB point point point point89 89 Lake Otis_SB point point point point91 91 Elmore_NB point point point point93 93 Elmore_SB point point point point95 95 Carlson_NB point point point point point97 97 Carlson_SB point point point point C:\TNM25\Program\Abbott\Existing 3 7 July 2015

50 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation point99 99 Spring Hill_NB point point point point Spring Hill_SB point point point point Birch_NB point point point point Birch_SB point point point point C:\TNM25\Program\Abbott\Existing 4 7 July 2015

51 INPUT: ROADWAYS Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 INPUT: ROADWAYS Average pavement type shall be used unless PROJECT/CONTRACT: Abbott Road Rehabilitation a State highway agency substantiates the use RUN: Abbott_Existing of a different type with the approval of FHWA Roadway Points Name Width Name No. Coordinates (pavement) Flow Control Segment X Y Z Control Speed Percent Pvmt On Device Constraint Vehicles Type Struct? Affected ft ft ft ft mph % Eastbound 12.0 point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average C:\TNM25\Program\Abbott\Existing 1 7 July 2015

52 INPUT: ROADWAYS Abbott Road Rehabilitation point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Westbound 12.0 point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average C:\TNM25\Program\Abbott\Existing 2 7 July 2015

53 INPUT: ROADWAYS Abbott Road Rehabilitation point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Lake Otis_NB 24.0 point , , Average point , , Average point , , Average point , , Lake Otis_SB 24.0 point , , Average point , , Average point , , Average point , , Elmore_NB 12.0 point , , Average point , , Average point , , Average point , , Elmore_SB 12.0 point , , Average point , , Average point , , Average point , , Carlson_NB 12.0 point , , Average point , , Average point , , Average point , , Average point , , Carlson_SB 12.0 point , , Average point , , Average point , , Average point , , Average point , , Spring Hill_NB 12.0 point , , Average point , , Average point , , Average point , , Spring Hill_SB 12.0 point , , Average point , , Average point , , Average C:\TNM25\Program\Abbott\Existing 3 7 July 2015

54 INPUT: ROADWAYS Abbott Road Rehabilitation point , , Birch_NB 12.0 point , , Average point , , Average point , , Average point , , Birch_SB 12.0 point , , Average point , , Average point , , Average point , , C:\TNM25\Program\Abbott\Existing 4 7 July 2015

55 INPUT: RECEIVERS Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 INPUT: RECEIVERS PROJECT/CONTRACT: Abbott Road Rehabilitation RUN: Abbott_Existing Receiver Name No. #DUs Coordinates (ground) Height Input Sound Levels and Criteria Active X Y Z above Existing Impact Criteria NR in Ground LAeq1h LAeq1h Sub'l Goal Calc. ft ft ft ft dba dba db db , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y C:\TNM25\Program\Abbott\Existing 1 7 July 2015

56 INPUT: RECEIVERS Abbott Road Rehabilitation , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y C:\TNM25\Program\Abbott\Existing 2 7 July 2015

57 INPUT: RECEIVERS Abbott Road Rehabilitation , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y , , Y M , , Y M , , Y M , , Y M , , Y M , , Y , , Y , , Y , , Y C:\TNM25\Program\Abbott\Existing 3 7 July 2015

58 RESULTS: SOUND LEVELS Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 Calculated with TNM 2.5 RESULTS: SOUND LEVELS PROJECT/CONTRACT: Abbott Road Rehabilitation RUN: Abbott_Existing BARRIER DESIGN: INPUT HEIGHTS Average pavement type shall be used unless a State highway agency substantiates the use ATMOSPHERICS: 68 deg F, 50% RH of a different type with approval of FHWA. Receiver Name No. #DUs Existing No Barrier With Barrier LAeq1h LAeq1h Increase over existing Type Calculated Noise Reduction Calculated Crit'n Calculated Crit'n Impact LAeq1h Calculated Goal Calculated Sub'l Inc minus Goal dba dba dba db db dba db db db C:\TNM25\Program\Abbott\Existing 1 7 July 2015

59 RESULTS: SOUND LEVELS Abbott Road Rehabilitation C:\TNM25\Program\Abbott\Existing 2 7 July 2015

60 RESULTS: SOUND LEVELS Abbott Road Rehabilitation M M M M M Dwelling Units # DUs Noise Reduction Min Avg Max db db db All Selected All Impacted All that meet NR Goal C:\TNM25\Program\Abbott\Existing 3 7 July 2015

61 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 INPUT: TRAFFIC FOR LAeq1h Volumes PROJECT/CONTRACT: Abbott Road Rehabilitation RUN: Abbott_Future No Build Roadway Points Name Name No. Segment Autos MTrucks HTrucks Buses Motorcycles V S V S V S V S V S veh/hr mph veh/hr mph veh/hr mph veh/hr mph veh/hr mph Eastbound point point point point point point point point point point point point point point point point point point point point point point point point point C:\TNM25\Program\Abbott\Future No Build 1 7 Jul

62 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation point point point point point point point point point point point point42 42 Westbound point point point point point point point point point point point point point point point point point point point point point point point point point C:\TNM25\Program\Abbott\Future No Build 2 7 Jul

63 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation point point point point point point point point point point point point46 46 Lake Otis_NB point point point point89 89 Lake Otis_SB point point point point91 91 Elmore_NB point point point point93 93 Elmore_SB point point point point95 95 Carlson_NB point point point point point97 97 Carlson_SB point point point point C:\TNM25\Program\Abbott\Future No Build 3 7 Jul

64 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation point99 99 Spring Hill_NB point point point point Spring Hill_SB point point point point Birch_NB point point point point Birch_SB point point point point C:\TNM25\Program\Abbott\Future No Build 4 7 Jul

65 INPUT: ROADWAYS Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 INPUT: ROADWAYS Average pavement type shall be used unless PROJECT/CONTRACT: Abbott Road Rehabilitation a State highway agency substantiates the use RUN: Abbott_Future No Build of a different type with the approval of FHWA Roadway Points Name Width Name No. Coordinates (pavement) Flow Control Segment X Y Z Control Speed Percent Pvmt On Device Constraint Vehicles Type Struct? Affected ft ft ft ft mph % Eastbound 25.0 point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average C:\TNM25\Program\Abbott\Future No Build 1 7 July 2015

66 INPUT: ROADWAYS Abbott Road Rehabilitation point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Westbound 25.0 point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average C:\TNM25\Program\Abbott\Future No Build 2 7 July 2015

67 INPUT: ROADWAYS Abbott Road Rehabilitation point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Lake Otis_NB 24.0 point , , Average point , , Average point , , Average point , , Lake Otis_SB 24.0 point , , Average point , , Average point , , Average point , , Elmore_NB 12.0 point , , Average point , , Average point , , Average point , , Elmore_SB 12.0 point , , Average point , , Average point , , Average point , , Carlson_NB 12.0 point , , Average point , , Average point , , Average point , , Average point , , Carlson_SB 12.0 point , , Average point , , Average point , , Average point , , Average point , , Spring Hill_NB 12.0 point , , Average point , , Average point , , Average point , , Spring Hill_SB 12.0 point , , Average point , , Average point , , Average C:\TNM25\Program\Abbott\Future No Build 3 7 July 2015

68 INPUT: ROADWAYS Abbott Road Rehabilitation point , , Birch_NB 12.0 point , , Average point , , Average point , , Average point , , Birch_SB 12.0 point , , Average point , , Average point , , Average point , , C:\TNM25\Program\Abbott\Future No Build 4 7 July 2015

69 RESULTS: SOUND LEVELS Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 Calculated with TNM 2.5 RESULTS: SOUND LEVELS PROJECT/CONTRACT: Abbott Road Rehabilitation RUN: Abbott_Future No Build BARRIER DESIGN: INPUT HEIGHTS Average pavement type shall be used unless a State highway agency substantiates the use ATMOSPHERICS: 68 deg F, 50% RH of a different type with approval of FHWA. Receiver Name No. #DUs Existing No Barrier With Barrier LAeq1h LAeq1h Increase over existing Type Calculated Noise Reduction Calculated Crit'n Calculated Crit'n Impact LAeq1h Calculated Goal Calculated Sub'l Inc minus Goal dba dba dba db db dba db db db C:\TNM25\Program\Abbott\Future No Build 1 7 July 2015

70 RESULTS: SOUND LEVELS Abbott Road Rehabilitation C:\TNM25\Program\Abbott\Future No Build 2 7 July 2015

71 RESULTS: SOUND LEVELS Abbott Road Rehabilitation M M M M M Dwelling Units # DUs Noise Reduction Min Avg Max db db db All Selected All Impacted All that meet NR Goal C:\TNM25\Program\Abbott\Future No Build 3 7 July 2015

72 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 INPUT: TRAFFIC FOR LAeq1h Volumes PROJECT/CONTRACT: Abbott Road Rehabilitation RUN: Abbott_Future Build Roadway Points Name Name No. Segment Autos MTrucks HTrucks Buses Motorcycles V S V S V S V S V S veh/hr mph veh/hr mph veh/hr mph veh/hr mph veh/hr mph Eastbound point point point point point point point point point point point point point point point point point point point point point point point point point C:\TNM25\Program\Abbott\Proposed 1 7 July 2015

73 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation point point point point point point point point point point point point42 42 Westbound point point point point point point point point point point point point point point point point point point point point point point point point point C:\TNM25\Program\Abbott\Proposed 2 7 July 2015

74 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation point point point point point point point point point point point point46 46 Lake Otis_NB point point point point89 89 Lake Otis_SB point point point point91 91 Elmore_NB point point point point93 93 Elmore_SB point point point point95 95 Carlson_NB point point point point point97 97 Carlson_SB point point point point C:\TNM25\Program\Abbott\Proposed 3 7 July 2015

75 INPUT: TRAFFIC FOR LAeq1h Volumes Abbott Road Rehabilitation point99 99 Spring Hill_NB point point point point Spring Hill_SB point point point point Birch_NB point point point point Birch_SB point point point point C:\TNM25\Program\Abbott\Proposed 4 7 July 2015

76 INPUT: ROADWAYS Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 INPUT: ROADWAYS Average pavement type shall be used unless PROJECT/CONTRACT: Abbott Road Rehabilitation a State highway agency substantiates the use RUN: Abbott_Future Build of a different type with the approval of FHWA Roadway Points Name Width Name No. Coordinates (pavement) Flow Control Segment X Y Z Control Speed Percent Pvmt On Device Constraint Vehicles Type Struct? Affected ft ft ft ft mph % Eastbound 25.0 point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average C:\TNM25\Program\Abbott\Proposed 1 7 July 2015

77 INPUT: ROADWAYS Abbott Road Rehabilitation point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Westbound 25.0 point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average C:\TNM25\Program\Abbott\Proposed 2 7 July 2015

78 INPUT: ROADWAYS Abbott Road Rehabilitation point , , Average point , , Average point , , Average point , , Average point , , Average point , , Average point , , Lake Otis_NB 24.0 point , , Average point , , Average point , , Average point , , Lake Otis_SB 24.0 point , , Average point , , Average point , , Average point , , Elmore_NB 12.0 point , , Average point , , Average point , , Average point , , Elmore_SB 12.0 point , , Average point , , Average point , , Average point , , Carlson_NB 12.0 point , , Average point , , Average point , , Average point , , Average point , , Carlson_SB 12.0 point , , Average point , , Average point , , Average point , , Average point , , Spring Hill_NB 12.0 point , , Average point , , Average point , , Average point , , Spring Hill_SB 12.0 point , , Average point , , Average point , , Average C:\TNM25\Program\Abbott\Proposed 3 7 July 2015

79 INPUT: ROADWAYS Abbott Road Rehabilitation point , , Birch_NB 12.0 point , , Average point , , Average point , , Average point , , Birch_SB 12.0 point , , Average point , , Average point , , Average point , , C:\TNM25\Program\Abbott\Proposed 4 7 July 2015

80 RESULTS: SOUND LEVELS Abbott Road Rehabilitation RBF Consulting 7 July 2015 Ryan Chiene TNM 2.5 Calculated with TNM 2.5 RESULTS: SOUND LEVELS PROJECT/CONTRACT: Abbott Road Rehabilitation RUN: Abbott_Future Build BARRIER DESIGN: INPUT HEIGHTS Average pavement type shall be used unless a State highway agency substantiates the use ATMOSPHERICS: 68 deg F, 50% RH of a different type with approval of FHWA. Receiver Name No. #DUs Existing No Barrier With Barrier LAeq1h LAeq1h Increase over existing Type Calculated Noise Reduction Calculated Crit'n Calculated Crit'n Impact LAeq1h Calculated Goal Calculated Sub'l Inc minus Goal dba dba dba db db dba db db db C:\TNM25\Program\Abbott\Proposed 1 7 July 2015

81 RESULTS: SOUND LEVELS Abbott Road Rehabilitation C:\TNM25\Program\Abbott\Proposed 2 7 July 2015

82 RESULTS: SOUND LEVELS Abbott Road Rehabilitation M M M M M Dwelling Units # DUs Noise Reduction Min Avg Max db db db All Selected All Impacted All that meet NR Goal C:\TNM25\Program\Abbott\Proposed 3 7 July 2015

83 Appendix C Supplemental Data This appendix includes noise monitoring data, field notes, photographs, and other data from the field investigation. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 C-1

84 Site Number: NM-1a Recorded By: Jared Travis Job Number: Date: 5/20/15 Time: 3:43 p.m. Location: Backyard of residence (9151 Seal Point Circle, Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Overcast Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

85 2250 Instrument: 2250 Application: BZ7225 Version Start Time: 05/20/ :43:43 End Time: 05/20/ :58:43 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB004 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 04:43:43 PM 04:58:43 PM 0:15:00 Date 05/20/ /20/2015

86 ABB004 db 05/20/ :43:43 PM - 04:58:43 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=65.3 db LFmax=75.5 db LFmin=47.0 db Hz ABB004 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :43:43 PM - 04:58:43 PM L1 = 72.2 db L5 = 69.6 db L10 = 68.4 db L50 = 64.2 db L90 = 55.9 db L95 = 51.9 db L99 = 48.5 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.1% Cumulative: 0.5% db

87 ABB004 Sound db :44:00 PM 04:46:00 PM 04:48:00 PM 04:50:00 PM 04:52:00 PM 04:54:00 PM 04:56:00 PM 04:58:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :51:12 PM - 04:51:13 PM LAIeq=68.3 db LAFmax=69.1 db LCpeak=93.2 db LAFmin=65.5 db ABB004 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 04:51:12 PM 0:00:01 Date 05/20/2015

88 ABB004 db 05/20/ :51:12 PM - 04:51:13 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=67.6 db LFmax=69.1 db LFmin=65.5 db Hz ABB004 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :51:12 PM - 04:51:13 PM L1 = 69.0 db L5 = 68.8 db L10 = 68.7 db L50 = 67.1 db L90 = 66.1 db L95 = 65.7 db L99 = 65.5 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

89 ABB004 Periodic reports Sound db :50:00 PM 05:00:00 PM 05:10:00 PM 05:20:00 PM 05:30:00 PM 05:40:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :43:43 PM - 05:43:43 PM LAIeq=66.3 db LAFmax=75.5 db LCpeak=98.0 db LAFmin=47.0 db ABB004 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 04:43:43 PM 0:15:00 Date 05/20/2015

90 ABB004 Periodic reports db 05/20/ :43:43 PM - 04:58:43 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=65.3 db LFmax=75.5 db LFmin=47.0 db Hz ABB004 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/20/ :43:43 PM - 04:58:43 PM L1 = 72.2 db L5 = 69.6 db L10 = 68.4 db L50 = 64.2 db L90 = 55.9 db L95 = 51.9 db L99 = 48.5 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.1% Cumulative: 0.5% db

91 ABB004 - Fast Logged Sound db :44:00 PM 04:46:00 PM 04:48:00 PM 04:50:00 PM 04:52:00 PM 04:54:00 PM 04:56:00 PM 04:58:00 PM LAeq LAF Cursor: 05/20/ :51:12 PM :51:13 PM.000 LAeq=68.4 db LAF =68.6 db ABB004 - Fast Logged Start Elapsed LAeq time time [db] Value 68.4 Time 04:51:12 PM.900 0:00: Date 05/20/2015

92 Site Number: NM-1b Recorded By: Jared Travis Job Number: Date: 5/20/15 Time: 4:03 p.m. Location: Backyard of residence (9151 Seal Point Circle, Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Overcast Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

93 2250 Instrument: 2250 Application: BZ7225 Version Start Time: 05/20/ :03:08 End Time: 05/20/ :18:08 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB005 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 05:03:08 PM 05:18:08 PM 0:15:00 Date 05/20/ /20/2015

94 ABB005 db 05/20/ :03:08 PM - 05:18:08 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=64.7 db LFmax=77.3 db LFmin=48.9 db Hz ABB005 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :03:08 PM - 05:18:08 PM L1 = 70.9 db L5 = 68.9 db L10 = 67.9 db L50 = 63.6 db L90 = 55.2 db L95 = 53.2 db L99 = 50.6 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.1% db

95 ABB005 Sound db :04:00 PM 05:06:00 PM 05:08:00 PM 05:10:00 PM 05:12:00 PM 05:14:00 PM 05:16:00 PM 05:18:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :10:37 PM - 05:10:38 PM LAIeq=64.9 db LAFmax=64.6 db LCpeak=81.0 db LAFmin=63.3 db ABB005 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 05:10:37 PM 0:00:01 Date 05/20/2015

96 ABB005 db 05/20/ :10:37 PM - 05:10:38 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=64.0 db LFmax=64.6 db LFmin=63.3 db Hz ABB005 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :10:37 PM - 05:10:38 PM L1 = 64.6 db L5 = 64.5 db L10 = 64.5 db L50 = 64.2 db L90 = 63.6 db L95 = 63.5 db L99 = 63.4 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

97 ABB005 Periodic reports Sound db :10:00 PM 05:20:00 PM 05:30:00 PM 05:40:00 PM 05:50:00 PM 06:00:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :03:08 PM - 06:03:08 PM LAIeq=66.1 db LAFmax=77.3 db LCpeak=96.6 db LAFmin=48.9 db ABB005 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 05:03:08 PM 0:15:00 Date 05/20/2015

98 ABB005 Periodic reports db 05/20/ :03:08 PM - 05:18:08 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=64.7 db LFmax=77.3 db LFmin=48.9 db Hz ABB005 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/20/ :03:08 PM - 05:18:08 PM L1 = 70.9 db L5 = 68.9 db L10 = 67.9 db L50 = 63.6 db L90 = 55.2 db L95 = 53.2 db L99 = 50.6 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.1% db

99 ABB005 - Fast Logged Sound db :04:00 PM 05:06:00 PM 05:08:00 PM 05:10:00 PM 05:12:00 PM 05:14:00 PM 05:16:00 PM 05:18:00 PM LAeq LAF Cursor: 05/20/ :10:37 PM :10:38 PM.000 LAeq=63.3 db LAF =63.5 db ABB005 - Fast Logged Start Elapsed LAeq time time [db] Value 63.3 Time 05:10:37 PM.900 0:00: Date 05/20/2015

100 Site Number: NM-2a Recorded By: Jared Travis Job Number: Date: 5/21/15 Time: 4:56 p.m. Location: Backyard of residence (3120 Dos Cir Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Sunny Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

101 2250 Instrument: 2250 Application: BZ7225 Version 4.4 Start Time: 05/21/ :56:35 End Time: 05/21/ :11:35 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB026 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 04:56:35 PM 05:11:35 PM 0:15:00 Date 05/21/ /21/2015

102 ABB026 db 05/21/ :56:35 PM - 05:11:35 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=62.5 db LFmax=75.0 db LFmin=45.3 db Hz ABB026 % Based on LAF, 10ms Class width: 0.2 db 05/21/ :56:35 PM - 05:11:35 PM L1 = 68.0 db L5 = 65.8 db L10 = 64.9 db L50 = 62.0 db L90 = 56.7 db L95 = 53.5 db L99 = 48.4 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

103 ABB026 Sound db :58:00 PM 05:00:00 PM 05:02:00 PM 05:04:00 PM 05:06:00 PM 05:08:00 PM 05:10:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/21/ :04:04 PM - 05:04:05 PM LAIeq=60.0 db LAFmax=58.0 db LCpeak=75.6 db LAFmin=53.9 db ABB026 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 05:04:04 PM 0:00:01 Date 05/21/2015

104 ABB026 db 05/21/ :04:04 PM - 05:04:05 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=56.3 db LFmax=58.0 db LFmin=53.9 db Hz ABB026 % Based on LAF, 10ms Class width: 0.2 db 05/21/ :04:04 PM - 05:04:05 PM L1 = 57.9 db L5 = 57.6 db L10 = 57.0 db L50 = 55.8 db L90 = 54.5 db L95 = 54.4 db L99 = 54.0 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

105 ABB026 Periodic reports Sound db :00:00 PM 05:10:00 PM 05:20:00 PM 05:30:00 PM 05:40:00 PM 05:50:00 PM 06:00:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/21/ :56:35 PM - 05:00:00 PM LAIeq=63.3 db LAFmax=68.0 db LCpeak=94.2 db LAFmin=54.5 db ABB026 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 04:56:35 PM 0:03:25 Date 05/21/2015

106 ABB026 Periodic reports db 05/21/ :56:35 PM - 05:00:00 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=62.5 db LFmax=68.0 db LFmin=54.5 db Hz ABB026 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/21/ :56:35 PM - 05:00:00 PM L1 = 66.4 db L5 = 65.5 db L10 = 64.9 db L50 = 62.2 db L90 = 58.5 db L95 = 57.3 db L99 = 56.0 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

107 ABB026 - Fast Logged Sound db :58:00 PM 05:00:00 PM 05:02:00 PM 05:04:00 PM 05:06:00 PM 05:08:00 PM 05:10:00 PM LAeq LAF Cursor: 05/21/ :04:04 PM :04:05 PM.000 LAeq=58.6 db LAF =57.9 db ABB026 - Fast Logged Start Elapsed LAeq time time [db] Value 58.6 Time 05:04:04 PM.900 0:00: Date 05/21/2015

108 Site Number: NM-2b Recorded By: Jared Travis Job Number: Date: 5/21/15 Time: 5:12 p.m. Location: Backyard of residence (3120 Dos Cir Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Sunny Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

109 2250 Instrument: 2250 Application: BZ7225 Version 4.4 Start Time: 05/21/ :12:49 End Time: 05/21/ :27:49 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB027 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 05:12:49 PM 05:27:49 PM 0:15:00 Date 05/21/ /21/2015

110 ABB027 db 05/21/ :12:49 PM - 05:27:49 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=62.7 db LFmax=77.5 db LFmin=43.9 db Hz ABB027 % Based on LAF, 10ms Class width: 0.2 db 05/21/ :12:49 PM - 05:27:49 PM L1 = 67.0 db L5 = 65.5 db L10 = 64.8 db L50 = 62.1 db L90 = 57.9 db L95 = 55.5 db L99 = 48.6 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.2% db

111 ABB027 Sound db :14:00 PM 05:16:00 PM 05:18:00 PM 05:20:00 PM 05:22:00 PM 05:24:00 PM 05:26:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/21/ :20:18 PM - 05:20:19 PM LAIeq=57.7 db LAFmax=58.1 db LCpeak=73.4 db LAFmin=56.5 db ABB027 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 05:20:18 PM 0:00:01 Date 05/21/2015

112 ABB027 db 05/21/ :20:18 PM - 05:20:19 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=57.3 db LFmax=58.1 db LFmin=56.5 db Hz ABB027 % Based on LAF, 10ms Class width: 0.2 db 05/21/ :20:18 PM - 05:20:19 PM L1 = 58.1 db L5 = 57.8 db L10 = 57.7 db L50 = 57.1 db L90 = 56.7 db L95 = 56.6 db L99 = 56.5 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

113 ABB027 Periodic reports Sound db :20:00 PM 05:30:00 PM 05:40:00 PM 05:50:00 PM 06:00:00 PM 06:10:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/21/ :12:49 PM - 06:12:49 PM LAIeq=63.6 db LAFmax=77.5 db LCpeak=99.7 db LAFmin=43.9 db ABB027 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 05:12:49 PM 0:15:00 Date 05/21/2015

114 ABB027 Periodic reports db 05/21/ :12:49 PM - 05:27:49 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=62.7 db LFmax=77.5 db LFmin=43.9 db Hz ABB027 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/21/ :12:49 PM - 05:27:49 PM L1 = 67.0 db L5 = 65.5 db L10 = 64.8 db L50 = 62.1 db L90 = 57.9 db L95 = 55.5 db L99 = 48.6 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.2% db

115 ABB027 - Fast Logged Sound db :14:00 PM 05:16:00 PM 05:18:00 PM 05:20:00 PM 05:22:00 PM 05:24:00 PM 05:26:00 PM LAeq LAF Cursor: 05/21/ :20:18 PM :20:19 PM.000 LAeq=58.3 db LAF =58.1 db ABB027 - Fast Logged Start Elapsed LAeq time time [db] Value 58.3 Time 05:20:18 PM.900 0:00: Date 05/21/2015

116 Site Number: NM-3a Recorded By: Jared Travis Job Number: Date: 5/21/15 Time: 3:11 p.m. Location: Backyard of residence (9151 Chipwood Cir Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Sunny with clouds Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

117 2250 Instrument: 2250 Application: BZ7225 Version 4.4 Start Time: 05/21/ :11:02 End Time: 05/21/ :26:02 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB018 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 03:11:02 PM 03:26:02 PM 0:15:00 Date 05/21/ /21/2015

118 ABB018 db 05/21/ :11:02 PM - 03:26:02 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=63.9 db LFmax=77.2 db LFmin=44.5 db Hz ABB018 % Based on LAF, 10ms Class width: 0.2 db 05/21/ :11:02 PM - 03:26:02 PM L1 = 69.1 db L5 = 67.4 db L10 = 66.7 db L50 = 63.3 db L90 = 56.3 db L95 = 52.0 db L99 = 47.9 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.1% db

119 ABB018 Sound db :12:00 PM 03:14:00 PM 03:16:00 PM 03:18:00 PM 03:20:00 PM 03:22:00 PM 03:24:00 PM 03:26:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/21/ :18:31 PM - 03:18:32 PM LAIeq=63.8 db LAFmax=64.2 db LCpeak=79.2 db LAFmin=61.9 db ABB018 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 03:18:31 PM 0:00:01 Date 05/21/2015

120 ABB018 db 05/21/ :18:31 PM - 03:18:32 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=62.7 db LFmax=64.2 db LFmin=61.9 db Hz ABB018 % Based on LAF, 10ms Class width: 0.2 db 05/21/ :18:31 PM - 03:18:32 PM L1 = 64.2 db L5 = 64.1 db L10 = 63.7 db L50 = 62.9 db L90 = 62.1 db L95 = 62.0 db L99 = 61.8 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

121 ABB018 Periodic reports Sound db :20:00 PM 03:30:00 PM 03:40:00 PM 03:50:00 PM 04:00:00 PM 04:10:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/21/ :11:02 PM - 04:11:02 PM LAIeq=65.1 db LAFmax=77.2 db LCpeak=96.3 db LAFmin=44.5 db ABB018 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 03:11:02 PM 0:15:00 Date 05/21/2015

122 ABB018 Periodic reports db 05/21/ :11:02 PM - 03:26:02 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=63.9 db LFmax=77.2 db LFmin=44.5 db Hz ABB018 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/21/ :11:02 PM - 03:26:02 PM L1 = 69.1 db L5 = 67.4 db L10 = 66.7 db L50 = 63.3 db L90 = 56.3 db L95 = 52.0 db L99 = 47.9 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.1% db

123 ABB018 - Fast Logged Sound db :12:00 PM 03:14:00 PM 03:16:00 PM 03:18:00 PM 03:20:00 PM 03:22:00 PM 03:24:00 PM 03:26:00 PM LAeq LAF Cursor: 05/21/ :18:31 PM :18:32 PM.000 LAeq=62.0 db LAF =61.9 db ABB018 - Fast Logged Start Elapsed LAeq time time [db] Value 62.0 Time 03:18:31 PM.900 0:00: Date 05/21/2015

124 Site Number: NM-3a Recorded By: Jared Travis Job Number: Date: 5/21/15 Time: 3:28 p.m. Location: Backyard of residence (9151 Chipwood Cir Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Sunny with clouds Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

125 2250 Instrument: 2250 Application: BZ7225 Version 4.4 Start Time: 05/21/ :28:04 End Time: 05/21/ :43:04 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB019 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 03:28:04 PM 03:43:04 PM 0:15:00 Date 05/21/ /21/2015

126 ABB019 db 05/21/ :28:04 PM - 03:43:04 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=63.2 db LFmax=72.3 db LFmin=43.4 db Hz ABB019 % Based on LAF, 10ms Class width: 0.2 db 05/21/ :28:04 PM - 03:43:04 PM L1 = 68.7 db L5 = 67.1 db L10 = 66.4 db L50 = 62.3 db L90 = 53.1 db L95 = 49.2 db L99 = 46.2 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

127 ABB019 Sound db :30:00 PM 03:32:00 PM 03:34:00 PM 03:36:00 PM 03:38:00 PM 03:40:00 PM 03:42:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/21/ :35:33 PM - 03:35:34 PM LAIeq=64.4 db LAFmax=64.9 db LCpeak=82.9 db LAFmin=62.7 db ABB019 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 03:35:33 PM 0:00:01 Date 05/21/2015

128 ABB019 db 05/21/ :35:33 PM - 03:35:34 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=63.6 db LFmax=64.9 db LFmin=62.7 db Hz ABB019 % Based on LAF, 10ms Class width: 0.2 db 05/21/ :35:33 PM - 03:35:34 PM L1 = 64.9 db L5 = 64.8 db L10 = 64.7 db L50 = 63.3 db L90 = 63.0 db L95 = 62.9 db L99 = 62.8 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

129 ABB019 Periodic reports Sound db :30:00 PM 03:40:00 PM 03:50:00 PM 04:00:00 PM 04:10:00 PM 04:20:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/21/ :28:04 PM - 04:28:04 PM LAIeq=64.1 db LAFmax=72.3 db LCpeak=93.0 db LAFmin=43.4 db ABB019 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 03:28:04 PM 0:15:00 Date 05/21/2015

130 ABB019 Periodic reports db 05/21/ :28:04 PM - 03:43:04 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=63.2 db LFmax=72.3 db LFmin=43.4 db Hz ABB019 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/21/ :28:04 PM - 03:43:04 PM L1 = 68.7 db L5 = 67.1 db L10 = 66.4 db L50 = 62.3 db L90 = 53.1 db L95 = 49.2 db L99 = 46.2 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

131 ABB019 - Fast Logged Sound db :30:00 PM 03:32:00 PM 03:34:00 PM 03:36:00 PM 03:38:00 PM 03:40:00 PM 03:42:00 PM LAeq LAF Cursor: 05/21/ :35:33 PM :35:34 PM.000 LAeq=63.5 db LAF =63.3 db ABB019 - Fast Logged Start Elapsed LAeq time time [db] Value 63.5 Time 03:35:33 PM.900 0:00: Date 05/21/2015

132 Site Number: NM-4a Recorded By: Jared Travis Job Number: Date: 5/20/15 Time: 4:35 p.m. Location: Anchorage Community Mental Health Services Inc. (Daybreak) (9210 Jupiter Drive, Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Sunny Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

133 2250 Instrument: 2250 Application: BZ7225 Version Start Time: 05/20/ :35:36 End Time: 05/20/ :50:36 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB006 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 05:35:36 PM 05:50:36 PM 0:15:00 Date 05/20/ /20/2015

134 ABB006 db 05/20/ :35:36 PM - 05:50:36 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=66.1 db LFmax=78.5 db LFmin=46.8 db Hz ABB006 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :35:36 PM - 05:50:36 PM L1 = 72.4 db L5 = 70.4 db L10 = 69.5 db L50 = 65.0 db L90 = 55.8 db L95 = 53.3 db L99 = 49.4 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.1% Cumulative: 0.2% db

135 ABB006 Sound db :36:00 PM 05:38:00 PM 05:40:00 PM 05:42:00 PM 05:44:00 PM 05:46:00 PM 05:48:00 PM 05:50:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :43:05 PM - 05:43:06 PM LAIeq=69.0 db LAFmax=69.2 db LCpeak=88.2 db LAFmin=66.9 db ABB006 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 05:43:05 PM 0:00:01 Date 05/20/2015

136 ABB006 db 05/20/ :43:05 PM - 05:43:06 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=68.3 db LFmax=69.2 db LFmin=66.9 db Hz ABB006 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :43:05 PM - 05:43:06 PM L1 = 69.2 db L5 = 69.1 db L10 = 69.0 db L50 = 67.9 db L90 = 67.3 db L95 = 67.1 db L99 = 67.0 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

137 ABB006 Periodic reports Sound db :40:00 PM 05:50:00 PM 06:00:00 PM 06:10:00 PM 06:20:00 PM 06:30:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :35:36 PM - 06:35:36 PM LAIeq=67.5 db LAFmax=78.5 db LCpeak=97.7 db LAFmin=46.8 db ABB006 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 05:35:36 PM 0:15:00 Date 05/20/2015

138 ABB006 Periodic reports db 05/20/ :35:36 PM - 05:50:36 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=66.1 db LFmax=78.5 db LFmin=46.8 db Hz ABB006 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/20/ :35:36 PM - 05:50:36 PM L1 = 72.4 db L5 = 70.4 db L10 = 69.5 db L50 = 65.0 db L90 = 55.8 db L95 = 53.3 db L99 = 49.4 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.1% Cumulative: 0.2% db

139 ABB006 - Fast Logged Sound db :36:00 PM 05:38:00 PM 05:40:00 PM 05:42:00 PM 05:44:00 PM 05:46:00 PM 05:48:00 PM 05:50:00 PM LAeq LAF Cursor: 05/20/ :43:05 PM :43:06 PM.000 LAeq=68.3 db LAF =68.6 db ABB006 - Fast Logged Start Elapsed LAeq time time [db] Value 68.3 Time 05:43:05 PM.900 0:00: Date 05/20/2015

140 Site Number: NM-4b Recorded By: Jared Travis Job Number: Date: 5/20/15 Time: 4:57 p.m. Location: Anchorage Community Mental Health Services Inc. (Daybreak) (9210 Jupiter Drive, Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Sunny with clouds Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

141 2250 Instrument: 2250 Application: BZ7225 Version Start Time: 05/20/ :57:11 End Time: 05/20/ :12:11 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB007 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 05:57:11 PM 06:12:11 PM 0:15:00 Date 05/20/ /20/2015

142 ABB007 db 05/20/ :57:11 PM - 06:12:11 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=66.7 db LFmax=75.5 db LFmin=49.4 db Hz ABB007 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :57:11 PM - 06:12:11 PM L1 = 72.0 db L5 = 70.5 db L10 = 69.6 db L50 = 66.2 db L90 = 58.4 db L95 = 56.3 db L99 = 54.1 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

143 ABB007 Sound db :58:00 PM 06:00:00 PM 06:02:00 PM 06:04:00 PM 06:06:00 PM 06:08:00 PM 06:10:00 PM 06:12:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :04:40 PM - 06:04:41 PM LAIeq=69.0 db LAFmax=68.9 db LCpeak=82.9 db LAFmin=67.5 db ABB007 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 06:04:40 PM 0:00:01 Date 05/20/2015

144 ABB007 db 05/20/ :04:40 PM - 06:04:41 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=68.0 db LFmax=68.9 db LFmin=67.5 db Hz ABB007 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :04:40 PM - 06:04:41 PM L1 = 68.8 db L5 = 68.6 db L10 = 68.5 db L50 = 68.0 db L90 = 67.6 db L95 = 67.5 db L99 = 67.4 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

145 ABB007 Periodic reports Sound db :00:00 PM 06:10:00 PM 06:20:00 PM 06:30:00 PM 06:40:00 PM 06:50:00 PM 07:00:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :57:11 PM - 06:00:00 PM LAIeq=68.0 db LAFmax=74.0 db LCpeak=94.2 db LAFmin=52.4 db ABB007 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 05:57:11 PM 0:02:49 Date 05/20/2015

146 ABB007 Periodic reports db 05/20/ :57:11 PM - 06:00:00 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=66.8 db LFmax=74.0 db LFmin=52.4 db Hz ABB007 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/20/ :57:11 PM - 06:00:00 PM L1 = 73.2 db L5 = 70.9 db L10 = 69.6 db L50 = 66.3 db L90 = 56.9 db L95 = 55.6 db L99 = 53.6 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.1% Cumulative: 0.1% db

147 ABB007 - Fast Logged Sound db :58:00 PM 06:00:00 PM 06:02:00 PM 06:04:00 PM 06:06:00 PM 06:08:00 PM 06:10:00 PM 06:12:00 PM LAeq LAF Cursor: 05/20/ :04:40 PM :04:41 PM.000 LAeq=68.5 db LAF =68.4 db ABB007 - Fast Logged Start Elapsed LAeq time time [db] Value 68.5 Time 06:04:40 PM.900 0:00: Date 05/20/2015

148 Site Number: NM-5a Recorded By: Jared Travis Job Number: Date: 5/20/15 Time: 5:38 p.m. Location: Backyard of residence (9201 Spring Hill Drive, Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Sunny with some clouds Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

149 2250 Instrument: 2250 Application: BZ7225 Version Start Time: 05/20/ :38:21 End Time: 05/20/ :53:21 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB014 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 06:38:21 PM 06:53:21 PM 0:15:00 Date 05/20/ /20/2015

150 ABB014 db 05/20/ :38:21 PM - 06:53:21 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=64.8 db LFmax=73.7 db LFmin=44.7 db Hz ABB014 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :38:21 PM - 06:53:21 PM L1 = 71.0 db L5 = 69.2 db L10 = 68.0 db L50 = 63.5 db L90 = 57.4 db L95 = 54.3 db L99 = 50.2 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

151 ABB014 Sound db :40:00 PM 06:42:00 PM 06:44:00 PM 06:46:00 PM 06:48:00 PM 06:50:00 PM 06:52:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :45:50 PM - 06:45:51 PM LAIeq=62.8 db LAFmax=63.4 db LCpeak=80.6 db LAFmin=60.4 db ABB014 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 06:45:50 PM 0:00:01 Date 05/20/2015

152 ABB014 db 05/20/ :45:50 PM - 06:45:51 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=61.4 db LFmax=63.4 db LFmin=60.4 db Hz ABB014 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :45:50 PM - 06:45:51 PM L1 = 63.3 db L5 = 63.1 db L10 = 62.8 db L50 = 61.6 db L90 = 60.6 db L95 = 60.5 db L99 = 60.4 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

153 ABB014 Periodic reports Sound db :40:00 PM 06:50:00 PM 07:00:00 PM 07:10:00 PM 07:20:00 PM 07:30:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :38:21 PM - 07:38:21 PM LAIeq=66.3 db LAFmax=73.7 db LCpeak=95.4 db LAFmin=44.7 db ABB014 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 06:38:21 PM 0:15:00 Date 05/20/2015

154 ABB014 Periodic reports db 05/20/ :38:21 PM - 06:53:21 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=64.8 db LFmax=73.7 db LFmin=44.7 db Hz ABB014 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/20/ :38:21 PM - 06:53:21 PM L1 = 71.0 db L5 = 69.2 db L10 = 68.0 db L50 = 63.5 db L90 = 57.4 db L95 = 54.3 db L99 = 50.2 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

155 ABB014 - Fast Logged Sound db :40:00 PM 06:42:00 PM 06:44:00 PM 06:46:00 PM 06:48:00 PM 06:50:00 PM 06:52:00 PM LAeq LAF Cursor: 05/20/ :45:50 PM :45:51 PM.000 LAeq=60.8 db LAF =60.7 db ABB014 - Fast Logged Start Elapsed LAeq time time [db] Value 60.8 Time 06:45:50 PM.900 0:00: Date 05/20/2015

156 Site Number: NM-5b Recorded By: Jared Travis Job Number: Date: 5/20/15 Time: 5:54 p.m. Location: Backyard of residence (9201 Spring Hill Drive, Anchorage, AK 99507) Source of Peak Noise: Noise Data Leq (db) Lmin (db) Lmax (db) Peak (db) Equipment Category Type Vendor Model Serial No. Cert. Date Note Sound Level Meter Brüel & Kjær /18/2014 Sound Microphone Brüel & Kjær /18/2014 Preamp Brüel & Kjær ZC /18/2014 Calibrator Brüel & Kjær /18/2014 Weather Data Duration: 15 minutes Sky: Partly cloudy Note: dba Offset = 0.01 Sensor Height (ft): 5 ft Est. Wind Ave Speed (mph / m/s) Temperature (degrees Fahrenheit) Barometer Pressure (inches) Photo of Measurement Location

157 2250 Instrument: 2250 Application: BZ7225 Version Start Time: 05/20/ :54:27 End Time: 05/20/ :09:27 Elapsed Time: 00:15:00 Bandwidth: 1/3-octave Max Input Level: Time Frequency Broadband (excl. Peak): FSI AC Broadband Peak: C Spectrum: FS Z Instrument Serial Number: Microphone Serial Number: Input: Top Socket Windscreen Correction: None Sound Field Correction: Diffuse-field Calibration Time: 05/18/ :45:28 Calibration Type: External reference Sensitivity: mv/pa ABB015 Start End Elapsed Overload LAeq LAFmax LAFmin time time time [%] [db] [db] [db] Value Time 06:54:27 PM 07:09:27 PM 0:15:00 Date 05/20/ /20/2015

158 ABB015 db 05/20/ :54:27 PM - 07:09:27 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=63.7 db LFmax=72.8 db LFmin=45.2 db Hz ABB015 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :54:27 PM - 07:09:27 PM L1 = 70.2 db L5 = 68.1 db L10 = 66.9 db L50 = 62.6 db L90 = 54.4 db L95 = 51.4 db L99 = 47.4 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

159 ABB015 Sound db :56:00 PM 06:58:00 PM 07:00:00 PM 07:02:00 PM 07:04:00 PM 07:06:00 PM 07:08:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :01:56 PM - 07:01:57 PM LAIeq=63.4 db LAFmax=63.7 db LCpeak=75.4 db LAFmin=58.9 db ABB015 Start Elapsed LAIeq LAFmax LAFmin time time [db] [db] [db] Value Time 07:01:56 PM 0:00:01 Date 05/20/2015

160 ABB015 db 05/20/ :01:56 PM - 07:01:57 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=61.4 db LFmax=63.7 db LFmin=58.9 db Hz ABB015 % Based on LAF, 10ms Class width: 0.2 db 05/20/ :01:56 PM - 07:01:57 PM L1 = 63.8 db L5 = 63.6 db L10 = 63.5 db L50 = 61.8 db L90 = 59.5 db L95 = 59.2 db L99 = 58.9 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

161 ABB015 Periodic reports Sound db :00:00 PM 07:10:00 PM 07:20:00 PM 07:30:00 PM 07:40:00 PM 07:50:00 PM 08:00:00 PM LAIeq LAFmax LCpeak LAFmin Cursor: 05/20/ :54:27 PM - 07:00:00 PM LAIeq=64.4 db LAFmax=72.8 db LCpeak=94.1 db LAFmin=45.2 db ABB015 Periodic reports Start Elapsed Overload LAIeq LAFmax LAFmin time time [%] [db] [db] [db] Value Time 06:54:27 PM 0:05:33 Date 05/20/2015

162 ABB015 Periodic reports db 05/20/ :54:27 PM - 07:00:00 PM A C LZeq LZFmax LZFmin Cursor: (A) Leq=63.0 db LFmax=72.8 db LFmin=45.2 db Hz ABB015 Periodic reports % Based on LAF, 10ms Class width: 0.2 db 05/20/ :54:27 PM - 07:00:00 PM L1 = 69.2 db L5 = 67.5 db L10 = 66.5 db L50 = 61.4 db L90 = 53.1 db L95 = 50.7 db L99 = 46.7 db Level Cumulative Cursor: [73.8 ; 74.0[ db Level: 0.0% Cumulative: 0.0% db

163 ABB015 - Fast Logged Sound db :56:00 PM 06:58:00 PM 07:00:00 PM 07:02:00 PM 07:04:00 PM 07:06:00 PM 07:08:00 PM LAeq LAF Cursor: 05/20/ :01:56 PM :01:57 PM.000 LAeq=58.4 db LAF =58.9 db ABB015 - Fast Logged Start Elapsed LAeq time time [db] Value 58.4 Time 07:01:56 PM.900 0:00: Date 05/20/2015

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169 Appendix D DOT&PF 2011 Noise Policy This appendix includes the April 2011 Alaska Department of Transportation & Public Facilities (DOT&PF) Noise Policy. Abbott Road Rehabilitation Project Project from Lake Otis Parkway to Birch Road Noise Study Report July 2015 D-1

170 Alaska Department of Transportation & Public Facilities Alaska Environmental Procedures Manual Noise Policy April 2011