Loading...
HomeMy WebLinkAboutCT 15-08; CARLSBAD RANCH PLANNING AREA 5; NOISE IMPACT STUDY; 2015-02-18Grand Pacific Resorts, Inc. Sheraton Hotel and Timeshare Project Noise Impact Study February 18, 2015 NOISE IMPACT STUDY SHERATON HOTEL AND TIMESHARE PROJECT Prepared for: Grand Pacific Resorts, Inc. 5900 Pasteur Court Carlsbad, California 92008 Prepared by: Rincon Consultants, Inc 5135 Avenida Encinas, Suite A Carlsbad, CA 92008 (760) 918-9444 February 18, 2015 This report prepared on 50% recycled paper with 50% post-consumer content. Grand Pacific Resorts, Inc. Noise Impact Study SHERATON HOTEL AND TIMESHARE PROJECT CARLSBAD, CALIFORNIA Noise Study Table of Contents Page Cover Letter Project Description ..................................................................................................................................... 1 Setting ...................................................................................................................................................... 1 Overview of Sound Measurement ................................................................................................. 1 Sensitive Receptors .......................................................................................................................... 3 Project Site Setting ............................................................................................................................ 4 Regulatory Setting ............................................................................................................................ 4 Vibration Standards ......................................................................................................................... 6 Impact Analysis .......................................................................................................................................... 7 Methodology and Significance Thresholds .................................................................................. 7 Temporary Construction Noise ...................................................................................................... 7 Construction Noise Reduction Measures ..................................................................................... 9 Residual Impacts ............................................................................................................................ 10 Temporary Construction-Related Vibration .............................................................................. 10 Long-Term Operational Noise Exposure .................................................................................... 10 References ................................................................................................................................................. 13 List of Figures Figure 1 -Project Location ........................................................................................................................ 2 Figure 2 -Noise Measurement Locations .............................................................................................. 5 List of Tables Table 1 Noise Monitoring Results ............................................................................................................ 4 Table 2 Typical Construction Equipment Noise Levels ....................................................................... 8 Table 3 Typical Maximum Construction Noise Levels at Various Distances from Project Construction ......................................................................................... 9 Table 4 Vibration Source Levels for Construction Equipment.. ........................................................ 10 r Grand Pacific Resorts, Inc. Grand Pacific Resorts, Inc. Noise Impact Study Table 5 Baseline Noise Conditions ........................................................................................................ 11 Appendices Appendix A Transportation Noise Model Results r Grand Pacific Resorts, Inc. ii Grand Pacific Resorts, Inc. Noise Impact Study -.... SHERATON HOTEL AND TIMESHARE PROJECT CARLSBAD, CALIFORNIA NOISE STUDY This report is an analysis of the potential noise impacts associated with the Sheraton Hotel and Timeshare project, a hotel and timeshare development proposed for construction in the City of Carlsbad. The report has been prepared by Rincon Consultants, Inc. under contract to Grand Pacific Resorts, Inc. This study analyzes the potential for temporary impacts associated with construction activity and long-term impacts associated with operation of the proposed project. PROJECT DESCRIPTION The project site is located on the north east side of Grand Pacific Drive, between Canon Road and The Crossings Drive (see Figure 1). The site encompasses 12.06 acres and is comprised of five separate land parcels. All parcels are currently vacant and are currently zoned Commercial Tourism with a Commercial Visitor-Serving Overlay (CT-Q). The proposed project is for two 4- story Sheraton hotels totaling 51,000 square feet (SF). The first phase of the Sheraton hotel would include 48 guestrooms for a total of 28,600 SF. The second phase of the Sheraton hotel would include 40 guestrooms for a total of 22,400 SF. The initial construction of the Sheraton hotel would also include a 15,000 SF Resort Center that would house a restaurant, lobby, gym, and meeting space. In addition to the Sheraton hotel, five timeshare villas are proposed to be built in a phased schedule. The villas range from 2 to 4 stories and would include a total of 72 timeshare units. A 2,750 SF maintenance building is also proposed during the initial phase of construction, along with a 1,250 SF service building, pool, spa, tennis court, vehicular roadways and parking areas. Decisions to approve entitlements associated with the proposed project are discretionary; thus, compliance with the California Environmental Quality Act (CEQA) will be required. This noise impact study will be used by the City of Carlsbad to support the discretionary review process. SETTING Overview of Sound Measurement Noise level (or volume) is generally measured in decibels (dB) using the A-weighted sound pressure level (dBA). The A-weighting scale is an adjustment to the actual sound pressure levels to be consistent with that of human hearing response, which is most sensitive to frequencies around 4,000 Hertz (about the highest note on a piano) and less sensitive to low frequencies (below 100 Hertz). Sound pressure level is measured on a logarithmic scale with the 0 dB level based on the lowest detectable sound pressure level that people can perceive (an audible sound that is not zero sound pressure level). Based on the logarithmic scale, a doubling of sound energy is equivalent to an increase of 3 dBA, and a sound that is 10 dBA less than the ambient sound level has no effect on ambient noise. Because of the nature of the human ear, a sound must be about 10 dBA r Grand Pacific Resorts, Inc. Grand Pacific Resorts, Inc. Noise Impact Study 0 I 0.25 0.5 Mile I ... 0 ., ! HUl$1de 0i- Imagery provided by ESRI and its licensors © 2015. * Project Location ,. Poinu1t111 N A Project Location Figure 1 Grand Pacific Resorts, Inc. Grand Pacific Resorts, Inc. Noise Impact Study greater than the reference sound to be judged as twice as loud. In general, a 3 dBA change in community noise levels is noticeable, while 1-2 dB changes generally are not perceived. Quiet suburban areas typically have noise levels in the range of 40-50 dBA, while arterial streets are in the 50-60+ dBA range. Normal conversational levels are in the 60-65 dBA range, and ambient noise levels greater than 65 dBA can interrupt conversations. Noise levels typically attenuate (i.e., drop off) at a rate of 6 dBA per doubling of distance from point sources (i.e., stationary industrial machinery). Noise from lightly traveled roads typically attenuates at a rate of 4.5 dBA per doubling of distance. Noise from heavily traveled roads typically attenuates at 3 dBA per doubling of distance. Noise levels may also be reduced by intervening structures; generally, a single row of buildings between the receptor and the noise source reduces the noise level by about 5 dBA, while a solid wall or earthen berm reduces noise levels by 5 to 10 dBA. The manner in which older homes in California were constructed (approximately 30 years old or older) generally provides a reduction of exterior-to-interior noise levels of about 20 to 25 dBA with closed windows. The exterior-to-interior reduction of newer residential units and office buildings constructed consistent with Title 24 of the California Energy Code is generally 30 dBA or more (HMMH, 2006). In addition to the actual instantaneous measurement of sound levels, the duration of sound is important because sounds that occur over a long period of time are more likely to be an annoyance or cause direct physical damage or environmental stress. One of the most frequently used noise metrics that considers both duration and sound power level is the equivalent noise level (Leq). The Leq is defined as the single steady A-weighted level that is equivalent to the same amount of energy as that contained in the actual fluctuating levels over a period of time (essentially, the average noise level). Typically, Leq is summed over a one-hour period. Lmax is the highest Root Mean Squared (RMS) sound pressure level within the measuring period, and Lmin is the lowest RMS sound pressure level within the measuring period. The time period in which noise occurs is also important since noise that occurs at night tends to be more disturbing than that which occurs during the day. Community noise is usually measured using Day-Night Average Level (Ldn), which is the 24-hour average noise level with a 10-dBA penalty for noise occurring during nighttime (10 p.m. to 7 a.m.) hours, or Community Noise Equivalent Level (CNEL), which is the 24-hour average noise level with a 5 dBA penalty for noise occurring from 7 p.m. to 10 p.m. and a 10 dBA penalty for noise occurring from 10 p.m. to 7 a.m. Noise levels described by Ldn and CNEL usually do not differ by more than 1 dB. Sensitive Receptors Noise exposure goals for various types of land uses reflect the varying noise sensitivities associated with these uses. The City of Carlsbad General Plan Noise Element includes a variety of land use and development types that are noise sensitive including residences, hotels, schools, churches, hospitals and convalescent care facilities. Nearby sensitive receptors are the existing hotel and timeshare facilities located along Grand Pacific Drive generally south and west of the proposed development site. r Grand Pacific Resorts, Inc. 3 Grand Pacific Resorts, Inc. Noise Impact Study Project Site Setting The most common and primary sources of noise in the project site vicinity are motor vehicles (e.g., automobiles, buses, trucks, and motorcycles) traveling along Cannon Road and Grand Pacific Drive. Motor vehicle noise is of concern because it is characterized by a high number of individual events, which often create a sustained noise level, and because of its proximity to noise sensitive uses. Interstate 5 is located approximately one mile west of the site. Traffic on 1-5 as well as surface streets to the west is audible as distant background noise but is nota major contributor to overall noise levels at the project site. McClellan-Palomar Airport is located approximately one mile southeast of the site. The westerly aircraft departure path is located to the south of the site. While aircraft do not overfly the site, they are audible at the site. The Part 150 Noise Compatibility Program study prepared by the Federal Aviation Administration in 2005 shows that the project site is north of the 60 dBA CNEL contour (FAA, 2005). To gather data on the general noise environment at the project site, two weekday evening 15- minute noise measurements were acquired adjacent to the project site on February 10, 2015, using an ANSI Type II integrating sound level meter. Monitoring site 1 is located along Grand Pacific Drive near the proposed entrance to the proposed project. Monitoring site 2 is located near the southwest corner of the Cannon Road/Grand Pacific Drive entrance. The temperature during monitoring was approximately 65 degrees with no measurable wind. During monitoring, a total of 20 cars/light trucks passed the monitoring location on Grand Pacific Drive. Approximately 479 cars/light trucks, 4 medium delivery trucks and 5 heavy trucks passed the monitoring location adjacent to Cannon Road. Table 1 identifies the noise measurement locations and measured noise levels. Monitoring locations are shown in Figure 2. As shown, the measured Leq was 59.1 dBA at Site 1 and 64.0 dBA at Site 2 during the evening monitoring period. Table 1 Noise Monitoring Results Measurement Location Primary Noise Sample Time Leq (dBA) Source East side of Grand Pacific Drive approximately 800 Traffic feet south of Cannon Road Weekday evening 59.1 Near southwest corner of Cannon Road and Grand Pacific Drive intersection approximately 80 feet Traffic Weekday evening 64.0 south of centerline Source: Fiefd visit using ANSI Type II Integrating sound /eve/ meter. Regulatory Setting In 1976, the California Department of Health, State Office of Noise Control published a recommended noise/land use compatibility matrix which many jurisdictions have adopted as a standard in their general plan noise elements. This matrix indicates that residential land uses and other noise sensitive receptors preferentially should be located in areas where outdoor ambient noise levels do not exceed 65 to 70 dBA (CNEL or Ldn). r Grand Pacific Resorts, Inc. 4 Grand Pacific Resorts, Inc. Noise Impact Study Project Location Noise Monitoring Location N 0 ___ 10_0 ___ 200 Feet A Imagery provided by Google and its #censors C 2015. Noise Measurement Locations Figure 2 Grand Pacific Resorts, Inc. Grand Pacific Resorts, Inc. Noise Impact Study Municipal Code and Noise Guideline Manual The City of Carlsbad has established noise guidelines in the Noise Element of the City's General Plan (City of Carlsbad, 1995) that are applicable for transportation noise sources. The noise guidelines identify compatible exterior noise levels for various land use types. Residential land uses are considered normally acceptable up to 60 dB CNEL. Commercial land uses are considered normally acceptable up to 65 dB CNEL and conditionally acceptable up to 75 dB. The City of Carlsbad Municipal Code regulates construction noise by limiting the hours of operation (City of Carlsbad 2003). Construction activities are allowed to occur Monday through Friday between the hours of 7 a.m. to sunset; and on Saturdays from 8 a.m. to sunset, excluding legal holidays. The City does not have quantitative noise level limits (i.e., based on sound levels) for general nuisance noise such as that associated with stationary equipment located on private property. The project site is located within Planned Area (PA) 5 in the Carlsbad Ranch Specific Plan. Potential environmental impacts associated with the development of PA-5 were evaluated in Carlsbad Ranch Specific Plan Program Environmental Impact Report (1992). Because the primary noise source associated with the proposed project is traffic and the project has been evaluated as part of an existing environmental document, exterior noise levels are evaluated based on general consistency with noise contours presented in the Program EIR as well as changes in traffic volumes relative to what was projected in the Carlsbad Ranch Specific Plan for PA-5. An interior noise standard of 45 dBA CNEL is used herein as referenced in the City of Carlsbad Noise Guidelines Manual (1995). Vibration Standards Vibration is a unique form of noise as the energy is transmitted through buildings, structures and the ground whereas audible noise energy is transmitted through the air. Thus, vibration is generally felt rather than heard. The ground motion caused by vibration is measured as particle velocity in inches per second and is referenced as vibration decibels (VdB). The vibration velocity level threshold of perception for humans is approximately 65 V dB. A vibration velocity of 75 V dB is the approximate dividing line between barely perceptible and distinctly perceptible levels. City policies do not address construction-related vibration; thus, for the purpose of evaluating project-related vibration impacts, thresholds established in the Federal Transit Administration's (FTA) Transit Noise and Vibration Impact Assessment (May 2006) are used. A threshold of 65 VdB is used for buildings where low ambient vibration is essential for interior operations. These buildings include hospitals and recording studios. A threshold of 72 V dB is used for residences and buildings where people normally sleep (i.e., hotels and rest homes). A threshold of 75 VdB is used for institutional land uses where activities occur primarily during the daytime (i.e., churches and schools). The threshold used for the proposed project is 72 VdB. Construction activities such as pile driving, demolition, excavation or drilling have the potential to generate ground vibrations near structures. With respect to ground-borne vibration impacts on structures, the FT A states that ground-borne vibration levels in excess of 100 V dB could damage fragile buildings and levels in excess of 95 V dB could damage extremely fragile historic r Grand Pacific Resorts, Inc. 6 Grand Pacific Resorts, Inc. Noise Impact Study ' ' buildings. No historic buildings occur near the site; thus, 100 V dB is used to quantify potential vibration impacts to neighboring structures. Construction activities that would generate significant vibration levels are not proposed. Nevertheless, to provide information for use in completing the CEQA evaluation, construction-related vibration impacts are evaluated using the above referenced criteria. IMPACT ANALYSIS Methodology and Significance Thresholds Construction noise estimates are based upon noise levels reported by the FT A and the Office of Planning and Environment, and the distance to nearby sensitive receptors. Reference noise levels from that document were used to estimate noise levels at nearby sensitive receptors based on a standard noise attenuation rate of 6 dBA per doubling of distance (line-of-sight method of sound attenuation). The purpose of this study was to determine whether traffic associated with the proposed project would have an adverse impact on noise levels within the study area. The study area is defined as the property proposed for development adjacent to Cannon Road and Grand Pacific Drive. To establish baseline noise levels, noise associated with traffic along Cannon Road and Grand Pacific Drive was calculated using the Traffic Noise Model Version 2.5 (U.S. Department of Transportation, Federal Highway Administration [FHW A], April 2004) (noise modeling findings are provided in Appendix A). Traffic volumes were based in part on 2014 data provided in the February 11, 2015 letter from Urban Systems and Associates describing overall traffic operations on roadways within the area. For peak hour modeling purposes, 10% of the average daily trip (ADT) volumes for Cannon Road was used. Peak hour volumes along Grand Pacific Drive were extrapolated from counts performed during noise monitoring. A noise increase greater than 3 dBA is readily perceptible to the average human ear and, thus, is the level considered a substantial noise increase related to traffic operations. For the proposed project, changes in traffic noise are assumed to be significant if a project would cause noise levels to exceed baseline levels by 3 dBA or more. For the purpose of this evaluation, the peak hour Leq is used for traffic noise rather than CNEL as it provides a more conservative estimate of potential noise levels. As referenced above, an interior noise standard of 45 dBA CNEL is used herein as provided in the City of Carlsbad Noise Guidelines Manual (1995). Temporary Construction Noise The main sources of noise during construction would include heavy machinery used during grading, and clearing the site, as well as equipment used during building construction and paving. Table 2 demonstrates the typical noise levels associated with heavy construction equipment. As shown, average noise levels associated with the use of heavy equipment at construction sites can range from about 81 to 95 dBA at 25 feet from the source, depending upon the types of equipment in operation at any given time and phase of construction (Hanson, Towers, and Meister, May 2006). These numbers would attenuate to a range of 69 to 83 dBA at a distance of 100 feet. r Grand Pacific Resorts, Inc. 7 Grand Pacific Resorts, Inc. Noise Impact Study Table2 Typical Construction Equipment Noise Levels Typical Level Typical Level (dBA) Typical Level (dBA) Equipment Onsite (dBA) 25 Feet 60 Feet from the 100 Feetfrom the from the Source Source Source Air Compressor 84 78 72 Backhoe 84 78 72 Bobcat Tractor 84 78 72 Concrete Mixer 85 79 73 Bulldozer 88 82 76 Jack Hammer 95 89 83 Pavement Roller 86 80 74 Street Sweeper 88 82 76 Man Lift 81 75 69 Dump Truck 82 76 70 Source: Noise levels based on FHWA Roadway Construction Noise Model (2006) Users Guide Table 1. Noise levels based on actual maximum measured noise levels at 50 feet (Lmax). Noise levels assume a noise attenuation rate of 6 dBA per doubling of distance. Noise-sensitive uses near the project site consist of existing hotel and timeshare units located adjacent to and approximately 200 feet south/ southwest of the site. Construction noise may be audible from the parking areas located along the east side the building. However, the distance between the source and receiving property will result in construction noise attenuation. Table 3 shows typical maximum construction noise levels at various distances from construction activity, based on a standard noise attenuation rate of 6 dBA per doubling of distance. The reference noise level used to estimate maximum noise levels that could occur is based on use of a bulldozer as it is likely to be the noisiest type of equipment used over a sustained period of time adjacent to sensitive properties during grading and site preparation activities. Actual noise levels will fluctuate throughout the day; however, given the distance between the source and receiving properties (approximately 200 feet), noise levels associated with bulldozer operation may periodically exceed 70 dBA. Cumulative noise levels may also exceed 70 dBA depending on the type and location of equipment used and whether multiple pieces of equipment are operating simultaneously in the same area. r Grand Pacific Resorts, Inc. 8 Grand Pacific Resorts, Inc. Noise Impact Study ,,. ,,, ...... Table3 Typical Maximum Construction Noise Levels at Various Distances from Project Construction Distance from Maximum Noise Level at Construction Receptor (dBA) 25 feet 88 50 feet 82 100 feet 76 250 feet 70 500 feet 64 1,000 feet 58 As noted, the sensitive receptors nearest to the proposed construction site are hotel and timeshare units adjacent to and west of the site along Grand Pacific Drive. Temporary construction noise is not restricted by the City of Carlsbad noise ordinance if it occurs between the hours specific in the noise ordinance referenced herein. While not required to comply with the noise ordinance, temporary construction noise can be reduced by implementing one or more of the measures listed below. Construction Noise Reduction Measures Temporary construction noise levels could be reduced through implementation of the following measures: N-1 N-2 r Construction Equipment. Electrical power shall be used to run air compressors and similar power tools. Internal combustion engines should be equipped with a muffler of a type recommended by the manufacturer and in good repair. All diesel equipment should be operated with closed engine doors and should be equipped with factory-recommended mufflers. Construction equipment that continues to generate substantial noise at the project boundaries should be shielded with temporary noise barriers, such as barriers that meet a sound transmission class (STC) rating of 25, sound absorptive panels, or sound blankets on individual pieces of construction equipment. Stationary noise-generating equipment, such as generators and compressors, should be located as far as practically possible from the nearest residential property lines. Limit Operations Adjacent to Receivers. Limit the number of large pieces of equipment (i.e., bulldozers or concrete mixers) operating adjacent to receivers to one at any given time. Grand Pacific Resorls, Inc. 9 Grand Pacific Resorts, Inc. Noise Impact Study Residual Impacts Project construction would represent a temporary source of noise at the project site. Measures N-1 and N-2 would reduce construction noise levels. No residual impacts associated with construction noise are anticipated. Temporary Construction-Related Vibration Activities associated with hotel and timeshare developments do not generate vibration. Thus, this discussion will focus on temporary vibration caused by construction. Based on the information presented in Table 4, vibration levels could reach approximately 75 VdB if a bulldozer is operating within 100 feet of hotel/ timeshare units. As discussed below, 100 V dB is the threshold where minor damage can occur in fragile buildings. The distance to the nearest hotel/ timeshare unit is approximately 200 feet; thus, vibration levels are projected to be under this threshold. Structural damage is not expected to occur as a result of construction activities associated with the proposed project. Vibration levels at hotel and timeshare units located south of the project site may exceed the ground borne velocity threshold level of 72 V dB for residences and/ or buildings where people sleep as discussed above. However, as long as construction occurs within the prescribed hours, the temporary impact would be considered adverse, but less than significant. Table4 Vibration Source Levels for Construction Equipment Equipment 25 Feet 50 Feet Large Bulldozer 87 81 Loaded Trucks 86 80 Jackhammer 79 73 Small Bulldozer 58 52 Source: Federal Railroad Administration, 1998 Long-Term Operational Noise Exposure Exterior Traffic Noise Levels Approximate VdB 60 Feet 76 Feet 100 Feet 79 77 75 78 76 74 71 69 67 50 48 46 To quantify baseline noise conditions, traffic noise at receiver points representing future development adjacent to Cannon Road and Grand Pacific Drive was estimated using the Traffic Noise Model Version 2.5 (U.S. Department of Transportation, Federal Highway Administration [FHW A], April 2004) (see Appendix A) as described above. Table 5 shows traffic noise levels at eight receiving properties adjacent to Cannon Road and along Grand Pacific Drive. These receptor locations were modeled to represent noise levels at different locations on the project site. Existing modeled roadway noise levels along Cannon Road are approximately 64 dBA and correspond to measured data collected in the field. Noise levels decrease as the distance from r Grand Pacific Resorts, Inc. 10 Grand Pacific Resorts, Inc. Noise Impact Study Cannon Road increases. The lowest noise levels, approximately 58 dBA, occur near the proposed Sheraton entrance. Table 5 Baseline Noise Conditions Roadway Existing Cannon Road west of Grand Pacific 63.1 Drive Cannon Road adjacent to and west of 64.1 Grand Pacific Drive entrance Cannon Road adjacent to and east of 64.3 Grand Pacific Drive entrance Cannon Road east of Grand Pacific 63.1 Drive Grand Pacific Avenue -west side 61.5 Grand Pacific Avenue -west side at 58.6 Marbrisa entrance Grand Pacific Avenue -east side 61.2 Grand Pacific Avenue -east side at 58.8 Sheraton entrance Whether the proposed project would be subjected to adverse noise conditions is based on whether noise levels would increase over those estimated in the 1992 Program EIR. Noise levels provided in the Program EIR are presented as the Community Noise Equivalent Level (CNEL) and defined as contour lines based on the distance from the centerline of Cannon Road in proximity to the Grand Pacific Drive intersection. According to the Program EIR, the 65 dBA CNEL contour is approximately 146 feet from the centerline of Cannon Road. As shown in Table 5, the modeled Leq is approximately 64 dBA in proximity to the intersection. The Leq provides a more conservative estimate of noise levels than the CNEL; thus, because the two numbers are within 1 dBA, the current CNEL in proximity to the project site is assumed to consistent with or less than what was projected in the 1992 Program EIR. As discussed in the February 11, 2015, letter from Urban Systems and Associates, Inc., traffic within the study area is expected to increase by approximately 1.1 % from what was evaluated in the 1992 Program EIR. A doubling of sound energy is needed to cause a noticeable (3 dBA) increase in noise levels. In other words, traffic volumes would have to double while maintaining the same speed for a noticeable increase in noise levels to occur. Thus, a 1.1 % increase in traffic would not change noise levels from what was modeled based on current field data and addressed in the above referenced EIR. Interior Traffic Noise Levels The proposed project would be designed to meet or exceed California Energy Code Title 24 standards which specify construction methods and materials that result in energy efficient structures and up to a 30 dBA reduction in exterior noise levels (assuming windows are closed). When windows are open the insertion loss drops to about 10 dBA. Based on the modeled noise levels shown in Table 5, and assuming that windows are closed, interior noise levels associated with traffic operations would be reduced from approximately 64 dBA outside at units nearest Cannon Road to 34 dBA. This would be below the 45 dBA interior standard. r Grand Pacific Resorls, Inc. 11 Grand Pacific Resorts, Inc. Noise Impact Study Exterior Airport Noise ., As previously noted, the site is located approximately one mile northwest of the McClellan- Palomar Airport. The Part 150 Noise Compatibility Program study prepared by the Federal Aviation Administration in 2005 shows that the project site is north of the 60 dBA CNEL contour (FAA, 2005). Noise associated with airport operations does not exceed City of Carlsbad residential noise standards (60 dBA CNEL) and would have no adverse effect on the proposed project. r Grand Pacific Resorts, Inc. 12 Grand Pacific Resorts, Inc. Noise Impact Study REFERENCES City of Carlsbad. General Plan Noise Element. 1993. City of Carlsbad. Noise Guidelines Manual. September, 1995. Federal Aviation Administration, Part 150 Noise Compatibility Program Study Reference Maps, April, 2005. Federal Highway Administration. Roadway Construction Noise Model. 2006. Users Guide Table 1. Federal Highway Administration, Transportation Noise Model, 2004. Federal Transit Administration. Transit Noise and Vibration Impact Assessment. May 2006. Hanson, Carl E., Towers, David A., and Meister, Lance D. (2006, May). Transit Noise and Vibration Impact Assessment. Federal Transit Administration, Office of Planning and Environment. http://www.fta.dot.gov/ documents/FT A Noise and Vibration Manual.pdf Harris Miller Miller & Hanson Inc. Transit Noise and Vibration Impact Assessment, Final Report. May 2006. r Grand Pacific Resorts, Inc. 13 Grand Pacific Resorts, Inc. Noise Impact Study r This page intentionally left blank. Grand Pacific Resorts, Inc. 14 .. ' Appendix A Transportation Noise Model Files RESULTS: SOUND LEVELS Project Development Grand Paclic Resorts, Inc. 13 February 2015 Rincon TNM 2.5 Calculated with TNM 2.5 ' I RES UL TS: SOUND LEVELS PROJECT/CONTRACT: Project Development RUN: Sheraton Hotel and Timeshare 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 INo. #DUs Existing No Barrier With Barrier LAeq1h 1LAeq1h Increase over existing Type caIculated Noise Reduction iCalculated Crit'n Calculated Crit'n Impact LAeq1h Calculated Goal calculated Sub'l lnc minus Goal dBA dBA dBA dB dB dBA dB dB dB Southwest mid-block 3 1 0.0 63.1 66 63.1 10 -63.1 0.0 8 -8.0 Southwest corner 4 1 0.0 64.1 66 64.1 10 -64.1 0.0 8 -8.0 Southeast corner 7 1 0.0 64.3 66 64.3 10 -64.3 0.0 8 -8.0 Southeast mid block 8 1 0.0! 63.1 66 63.1 10 -63.1 0.0 8 -8.0 West side GPO 11 1 0.0' 61.2 66 61.2 10 -61.2 0.0 8 -8.0 East side GPO 12 1 0.0 61.5 66 61.5 10 -61.5 0.0 8 -8.0 Marbrisa 13 1 0.0 58.6 66 58.6 10 -58.6 0.0 8 -8.0 Site Entrance I 14 1 0.0 58.8 66 58.8 10 -58.8 0.0 8 -8:0 Dwelling Units #DUs Noise Reduction Min 1 Avg Max dB 7 dB dB All Selected 8 O.Oi 0.0 0.0 I, All Impacted 0 0.0 0.0 0.0 All that meet NR Goal 0 0.0 0.0 0.0 C:ITNM25\Program\Sheraton Hotel and limeshare 1 13 February 2015