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CT 98-14; Thompson/Tabata; Tentative Map (CT) (143)
Corporate Office 76486 Bernardo Center Drive, #124 San Diego, CA 92128 Phone/Fax: (858) 451-3505 / (858) 451-0946 www.iseinc.ws October 14, 2002 (Revised) Ms. Kathy Baker Standard Pacific Homes 5750 Fleet Street, Suite 200 Carlsbad, CA 92008 RE: ACOUSTICAL SITE ASSESSMENT STANDARD PACIFIC POINSETTIA PROPERTY - CARLSBAD CA ISE REPORT #98-017 Dear Ms. Baker: At the request of Standard Pacific Properties, Investigative Science and Engineering (ISE) was directed to investigate potential noise impacts to the proposed Poinsettia Properties residential development located in Carlsbad, California. The results of that survey, as well as revised future sound levels at the site based upon updated site plans and traffic projections, are presented in this letter report. INTRODUCTION AND DEFINITIONS Existing Site Characterization The project site consists of 82.2 acres located in the central portion of the City of Carlsbad in San Diego County, California (refer to Figure 1). The site resides on both sides of Poinsettia Lane, approximately one mile east of Interstate 5. Aviara Parkway binds the lots to the east, single-family residential housing to the north, and high-density single-family housing to the west and south. In addition, two access roads are located on the project site to the south of Poinsettia Lane. The first road parallels the western boundary of the project site connecting Poinsettia Lane to the existing nursery, while the second connects Poinsettia Lane to the upper portion of the property. The site is currently zoned L-C and R-1-10000 with a proposed zoning of R-1-7500 and RD-M-Q. Elevations on the site range from approximately 308 feet above mean sea level (MSL) at the northeastern portion of the property to approximately 195 feet MSL at the southwestern corner of the property. An aerial photograph of the project site is shown in Figure 2 below. Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 2 of 20 Figure 1: Project Vicinity Map (Thomas Guide Page 1127 Grid 85} Acoustical Definitions Sound waves are linear mechanical waves. They can be propagated in solids, liquids, and gases. The material transmitting such a wave oscillates in the direction of propagation of the wave itself. Sound waves originate from some sort of vibrating surface. Whether this surface is the vibrating string of a violin or a person's vocal cords, a vibrating column of air from an organ or clarinet, or a vibrating panel from a loudspeaker, drum, or aircraft, the sound waves generated are all similar. All of these vibrating elements alternatively compress the surrounding air on a forward movement and expand it on a backward movement. Noise on the other hand is generally defined as unwanted or annoying sound that is typically associated with human activity and which interferes with or disrupts normal activities. Although exposure to high noise levels has been demonstrated to cause hearing loss, the principal human response to environmental noise is annoyance. The response of individuals to similar noise events is diverse and influenced by the type of noise, the perceived importance of the noise and its appropriateness in the setting, the time of day, and the sensitivity of the individual hearing the sound. Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 3 of 20 Figure 2: Aerial Photograph of Project Site (©AirPhoto USA, 1/01) Airborne sound is a rapid fluctuation of air pressure above and below atmospheric levels. The loudest sounds the human ear can hear comfortably are approximately one trillion times the acoustic energy that the ear can barely detect. Because of this vast range, any attempt to represent the acoustic intensity of a particular sound on a linear scale becomes unwieldy. As a result, a logarithmic ratio originally conceived for radio work known as the decibel (dB) is commonly employed. A sound level of zero "0" dB is scaled such that it is defined as the threshold of human hearing and would be barely audible to a human of normal hearing under extremely quiet listening conditions. Such conditions can only be generated in anechoic or "dead rooms". Typically, the quietest environmental conditions (extreme rural areas with extensive shielding) yield sound levels of approximately 20 decibels. Normal speech has a sound level of approximately 60 dB. Sound levels above 120 dB roughly correspond to the threshold of pain. Most of the sounds we hear in the environment do not consist of a single frequency, but rather a broad band of frequencies differing in sound level. The intensities of each frequency add to generate the sound we hear. The method commonly used to quantify environmental sounds consists of determining all of the frequencies of a sound according to a weighting system that reflects the nonlinear response characteristics of the human ear. This is called "A" weighting, and the decibel level measured is called the A-weighted sound level (or dBA). In practice, the level of a noise source is conveniently Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 4 of 20 measured using a sound level meter that includes a filter corresponding to the dBA curve. The minimum change in sound level that the human ear can detect is approximately 3 dB. A change in sound level of 10 dB is usually perceived by the average person as a doubling (or halving) of the sounds loudness. A change in sound level of 10 dB actually represents an approximately 90 percent change in the sound intensity, but only about a 50 percent change in the perceived loudness. This is due to the nonlinear response of the human ear to sound. As mentioned above, most of the sounds we hear in the environment do not consist of a single frequency, but rather a broad band of frequencies differing in sound level. The intensities of each frequency add to generate the sound we hear. The method commonly used to quantify environmental sounds consists of determining all of the frequencies of a sound according to a weighting system that reflects the nonlinear response characteristics of the human ear. This is called "A" weighting, and the decibel level measured is called the A-weighted sound level (or dBA). In practice, the level of a noise source is conveniently measured using a sound level meter that includes a filter corresponding to the dBA curve. Although the A-weighted sound level may adequately indicate the level of environmental noise at any instant in time, community noise levels vary continuously. Most environmental noise includes a conglomeration of sounds from distant sources that create a relatively steady background noise in which no particular source is identifiable. For this type of noise, a single descriptor called the Leq (or equivalent sound level) is used. Leq is the energy-mean A-weighted sound level during a measured time interval. It is the 'equivalent' constant sound level that would have to be produced by a given source to equal the average of the fluctuating level measured. For most acoustical studies, the monitoring interval is generally taken as one-hour and is abbreviated Leq-h. To describe the time-varying character of environmental noise, the statistical noise descriptors L10, L50, and L90 are commonly used. They are the noise levels equaled or exceeded during 10 percent, 50 percent, and 90 percent of a stated time. Sound levels associated with the L10 typically describe transient or short-term events, while levels associated with the L90 describe the steady state (or most prevalent) noise conditions. In addition, it is often desirable to know the acoustic range of the noise source being measured. This is accomplished through the maximum and minimum measured sound level (Lmax and Lmin) indicators. The Lmin value obtained for a particular monitoring location is often called the acoustic f/oor for that location. Finally, a sound measure employed by the State of California is known as the Community Noise Equivalence Level (or CNEL) is defined as the "A" weighted average sound level for a 24-hour day. It is calculated by adding a 5-decibel penalty to sound levels in the evening (7:00 p.m. to 10:00 p.m.), and a 10-decibel penalty to sound levels in the night (10:00 p.m. to 7:00 a.m.) to compensate for the increased sensitivity to noise during the quieter evening and nighttime hours. Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 5 of 20 APPLICABLE SIGNIFICANCE CRITERIA City of Carlsbad The Noise Element of the City of Carlsbad identifies sound levels that are compatible with various land uses. According to the City of Carlsbad Draft Noise Guidelines Manual, sound levels up to 60 dBA CNEL are compatible with residential land uses. Sound levels up to 65 dBA CNEL are compatible with recreational areas such as parks and playgrounds. The City also requires an interior noise study (compliant with State of California CCR Title 24 standards) where exterior exposure is in excess of the above land use criteria. Rear and side yard areas of the proposed Poinsettia Property development would be classified as usable exterior living space; thus, the City's guidelines will be applied in this report to determine the requirement of exterior and interior mitigation at all proposed units within the development adjacent to Poinsettia Lane and Aviara Parkway. There is no proposed usable exterior space within the affordable housing development area. State of California CCR Title 24 The California Code of Regulations (CCR), Title 24, Noise Insulation Standards, states that multi-family dwellings, hotels, and motels located where the CNEL exceeds 60 dBA, must obtain an acoustical analysis showing that the proposed design will limit interior noise to less than 45 dBA CNEL. Worst-case noise levels, either existing or future, must be used for this determination. Future noise levels must be predicted at least ten years from the time of building permit application. The City of Carlsbad has accepted the CCR Title 24 standards and applies them equally to all residential structures. ANALYSIS METHODOLOGY Existing Conditions Field Survey A Larson Davis Model 700 ANSI Type 2 integrating sound level meter was used as the data collection device. The meter was placed at the following locations: along Poinsettia Lane within northwestern corner of property (ML 1); along Poinsettia Lane approximately midway inside project site (ML 2); and lastly, overlooking the intersection of Aviara and Poinsettia from the project boundary (ML 3). The monitoring locations are shown graphically in Figure 3 below. The meter was mounted on a tripod roughly 5 feet above the ground in order to simulate the average height of the human ear above ground. The measurements were performed during peak hour traffic conditions on the morning of August 27, 1998. All equipment was calibrated before testing at ISE's acoustics and vibration laboratory to verify conformance with ANSI S1-4 1983 Type 2 and IEC 651 Type 2 standards. Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 6 of 20 Figure 3: Ambient Noise Monitoring Locations (ISE, 8/27/98) Future Acoustical Environment Modeling The Caltrans Sound 32 Traffic Noise Prediction Model with California (CALVENO) noise emission factors (based on FHWA RD-77-108 and FHWA/CA/TL- 87/03 standards) was used to calculate future onsite vehicular traffic noise levels. Model input included a digitized representation of the alignment of Poinsettia Lane and Aviara Parkway, as well as any local site topography, future ADT volume, vehicle mix, and receptor elevations. The roadway and site topography elevations were obtained and verified from the project site plans (Source: Standard Pacific Poinsettia Property TM - RBF Engineering - Revised 10/02). Model output consisted of peak hour energy-mean A-weighted sound levels (or Leq-h) for each receptor examined. Peak hour traffic values are calculated for an 8% traffic flow pattern and a 98/1/1 (automobiles/medium/heavy vehicles) percent mix in accordance with Caltrans traffic forecasting practices and the observed and predicted traffic mix levels. For peak hour traffic percentages between approximately 8 and 12 percent (and a Level of Service, or LOS, between A through C) the energy-mean A-weighted sound level is equivalent to the 24-hour Community Noise Equivalent Level (CNEL). Outside this range, a maximum variance of up to two dBA occurs between Leq-h and CNEL. Receptor elevations were considered 5 feet above the appropriate floor (pad) elevation. The model assumed a "hard" site sound propagation rule (i.e., a 3-dBA loss Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 7 of 20 per doubling of distance from roadway to receiver) in accordance with Caltrans practices. The model also considered the attenuation due to the slope adjacent to the project site. Future noise levels were calculated for the first and second floor elevations (assumed to be five and 15 feet respectively above the building pad). FINDINGS Ambient Sound Measurement Results Testing conditions during the morning of August 27, 1998 were partly cloudy with an average barometric pressure reading of 29.85 in-Hg, an average northerly wind speed of 3 to 5 miles per hour (MPH), and an approximate mean temperature of 68 degrees Fahrenheit. The results of the sound level monitoring are shown below in Table 1. The values for the energy equivalent sound level (Leg), the maximum and minimum measured sound levels (Lmaxand Lmin), and the statistical indicators L10, L50, and L90, are given for each monitoring location. TABLE 1: Measured Ambient Sound Levels - Standard Pacific Poinsettia Property 1-Hour Noise Level Descriptors in dBA Site Start Time Leq Lmax Lmin L10 L50 L90 ML1 ML 2 MLS 6:00 a.m. 7:00 a.m. 8:00 a.m. 57.3 57.4 58.3 67.5 70.0 72.0 38.0 41.0 45.5 61.0 60.5 61.0 54.5 55.0 56.5 43.5 46.0 51.5 Monitoring Locations: o ML 1: Meter positioned along Poinsettia Lane within northwestern corner of property. o ML 2: Meter positioned along Poinsettia Lane approximately midway inside project site. o ML 3: Meter positioned overlooking intersection of Aviara and Poinsettia. All positions taken at an approximate 50 foot setback from the edge of Poinsettia Lane Measurements collected at monitoring locations ML 1 through ML 3 reflect typical sound levels associated with the community setting observed and the topography of the surrounding terrain. The onsite hourly energy average sound levels (or Leq-h) recorded at 50 foot setback points along the edge of Poinsettia Lane was fairly constant over the three consecutive hours monitored. As indicated by the monitoring equipment, at least 90 percent of the time the onsite sound level averaged between 44 and 52 dBA. The difference between the Leq and L90 metrics was directly attributable to the intermittent nature of automobile traffic along Poinsettia Lane during morning peak hour conditions. The acoustic floor for the site, as seen by the Lmin indicator was low (between 38 and 46 dBA for all locations monitored) and reflects the semi-rural community noise environment of the project site. Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 8 of 20 Future Traffic Noise Impacts The primary source of future traffic noise near the project would be from Poinsettia Lane. Future year 2020 volume along this roadway alignment is projected to be 26,400 ADT traveling at the posted speed of 40 MPH (Source: Traffic Impact Analysis - Thompson Property - Carlsbad CA, LLG Engineers, 01/6/02). The projected year 2020 ADT for adjacent Aviara Parkway is 22,000 with a posted speed of 40 MPH. The results of the acoustical modeling are shown below in Table 2. Values for selected pad locations adjacent to Poinsettia Lane and Aviary Parkway are given. Also shown are the predicted noise levels for 1) unmitigated ground floor areas, 2) mitigated ground floor areas, and 3) mitigated second floor levels. Based on the model results, some lots adjacent to Poinsettia Lane were found to be above the 60 dBA CNEL threshold criteria established by the City. TABLE 2: Acoustical Modeling Results- Standard Pacific Poinsettia Property Lot Location 1 2 3 4 5 6 8 9 13 17 60 Affordable Housing 203 204 213 214 Notes: Ground Level (Unmit.) 55.5 56.3 59.0 57.6 59.8 58.4 60.3 59.1 57.3 55.4 66.7 66.8 67.1 67.1 61.9 65.6 o Values represent a Ground Level (Mit.) 53.1 54.6 57.4 56.2 58.7 58.6 58.2 59.0 57.4 55.3 57.7 59.7 59.7 58.7 57.9 59.7 Second Floor Areas 58.4 61.1 66.3 62.3 65.7 66.1 63.1 59.8 57.5 55.3 64.0 65.4 64.6 65.1 64.7 65.8 Lot Location 215 216 217 218 219 225 226 227 228 230 231 232 233 234 235 236 Ground Level (Unmit.) 66.1 65.9 65.3 64.2 61.9 57.9 56.4 55.4 55.6 57.9 57.4 57.1 59.0 61.2 60.3 51.9 sampling of potentially impacted lots along Poinsettia Lane and Ground Level (Mit.) 60.3 60.4 60.2 59.2 57.5 57.7 56.1 55.2 55.3 54.9 54.5 54.1 56.1 58.3 57.3 49.3 Aviara Parkway Second Floor Areas 66.1 65.7 65.4 64.2 62.1 64.6 64.2 63.0 63.3 62.5 60.0 60.4 64.3 64.3 63.0 53.0 Lots 'sandwiched' between the lots shown above would also require the same treatment. Modeled using the Caltrans Sound 32 Traffic Noise Prediction Model with California (CALVENO) noise emission factors (based on FHWA RD-77-108 and FHWA/CA/TL-87/03 standards). All sound levels given in dBA CNEL. Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 9 of 20 Lots numbered 60, 61, 62, the affordable housing area, 203, 204, 213 through 219, 234 and Lot 235 were found to have projected future (ground level) traffic-related noise levels in excess of the 60 dBA CNEL threshold established by the City. These lots would require noise walls of five feet to be located along the top-of-slope between Poinsettia Lane and the residential receptors. A schematic of the proposed wall design is shown in Figure 4 below. The design would reduce traffic-related noise impacts to below a level of significance as defined by the City. 5-FOOT WALL LOCATIONS l-i JLOJUUUN* Figure 4: Mitigation Wall Locations (RBF'Engineering - September 2002) Additionally, projected traffic volumes along Aviara Parkway combined with existing site topography negated the need for any mitigation along this roadway. Future noise levels along these eastern lots would fall below a level of significance as defined by the City. Finally, second floor receptor areas denoted in Table 2 above having levels above 60 dBA CNEL would require an interior acoustical analysis to determine acceptable construction materials and design measures to lower interior noise levels to 45 dBA CNEL per California CCR Title 24 Noise Insulation Standards. Any lots 'sandwiched' between these lots (or having a line-of-sight to the roadway) would also require interior noise control measures. Thus, for completeness, the identified lots requiring interior mitigation would be: 2 through 8, 60, 61, 62, the affordable housing Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 10 of 20 area, 203, 204, 213 through 220, and 225 through 235 inclusive. The interior acoustical analysis should be completed prior to submission of final architectural designs for the proposed units situated on the affected pads. Aircraft Transportation Noise Sources Identified The project site lies outside the influence areas of McClellan-Palomar Airport and associated industrial uses. The airport is currently operating at full capacity (maximum typical number of flight operations per day) and no appreciable increase in the contours is expected within the project analysis horizon. Thus, no significant impacts to the project site due to aircraft operations are expected. CONCLUSIONS Future noise levels along Poinsettia Lane were found to be in excess of the 60- dBA CNEL threshold established by the City for lots numbered 60, 61, 62, the affordable housing area, 203, 204, 213 through 219, 234 and Lot 235. These lots would require five-foot-high noise walls to be located along the top-of-slope between Poinsettia Lane and the affected residential receptors. The design would reduce traffic-related noise impacts to below a level of significance as defined by the City. Additionally, some second floor receptor areas would have facade levels above 60 dBA CNEL would require an interior acoustical analysis to determine acceptable construction materials and design measures to lower interior noise levels to 45 dBA CNEL per California CCR Title 24 Noise Insulation Standards. The affected lots requiring interior mitigation would be: 2 through 8, 60, 61, 62, the affordable housing area, 203, 204, 213 through 220, and 225 through 235 inclusive. The interior acoustical analysis should be completed prior to submission of final architectural designs for the proposed units situated on the affected pads. Should you have any questions regarding the above conclusions, please do not hesitate to contact me at (858) 451-3505. Sincerely, Rick Tavares, Ph.D. Project Principal Investigative Science and Engineering, Inc. Cc: Jeremy Louden, ISE Attachments: Sound 32 Input Decks Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 11 of 20 S32 Input Deck - Unmitigated Baseline Conditions STANDARD PACIFIC POINSETTIA PROPERTY (GROUND LEVEL UNMITIGATED) T-PEAK HOUR TRAFFIC CONDITIONS, 1 2038 , 40 , 21 , 35 , 21 , 35 T-PEAK HOUR TRAFFIC CONDITIONS, 2 1726 , 40 , 17 , 35 , 17 , 30 L-POINSETTIA LANE, 1 N,974,-100,200.6,PO N,804.6,109.7,205.8,PI N,698.7,240.3,209,P2 N,594.6,368.1,224,P3 N,481.9,505,240,P4 N,353.7,658.4,238,P5 N,245.5,801.3,246,P6 N,137.1,995.4,256,P7 N,43,1202.1,262,P8 N,-15.3,1376.2,266,P9 N,-81.7,1565.4,270,P10 N,-115.6,1693,272,P11 N,-152.2,1796.2,272,P12 L-AVIARA PARKWAY, 2 N,-900,1675,285,Al N,-659.5,1710,283,A2 N,-419.5,1756.1,279,A3 N,-118,1820.9,267,A4 N,728,2000,233,A5 B-BARRIER PLACEMENT, 1 , 2 , 0,0 810.32,189.5, 210.5, 210.5,SW1 747.71,256.04,210.5,210.5,SW2 754.63,265.74,215,215,SW3 702.81,309.98,215,215,SW4 764.8,362.46,215,215,SW5 B-BARRIER PLACEMENT, 2 , 2 , 0,0 938.9,408.64,235.6,235.6,SW6 870.36,410.97,237.1,237.1,SW7 811.63,411.2,237.6,237.6,SW8 756.59,400.98,238.9,238.9,SW9 692.63,362.7,239.5,239.5,SW10 576.16,470.54,240.5,240.5,SW11 472.98,559.5,240.8,240.8,SW12 424.62,631.06,240.8,240.8,SW13 482.19,653.09,240.8,240.8,SW14 B-BARRIER PLACEMENT, 3 , 2 , 0,0 547. 2,716.1,261.2,261.2,SW15 491.5,707.38,257.3,257.3,SW16 422.92,670.86,248.2,248.2,SW17 366.17,747.78,248.2,248.2,SW18 B-BARRIER PLACEMENT, 4 , 1 , 0,0 469.84,935.63,270.2,270.2,SE1 464.54,903.72,270.2,270.2,SE2 431.57,898.75,270.2,270.2, SE3 332.38,889.12,271,271,SE4 Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 12 of 20 287.16,874.21,272,272,SE5 263.56,896.7,272,272,SE6 233.8,943.45,272.5,272.5,SE7 200.08,1061.46,272.8,272.8,SE8 165.87,1122.39,273.6,273.6,SE9 138.25,1199.1,274.3,274.3,SE10 B-BARRIER PLACEMENT, 5 , 2 , 0,0 502.05,212.58,234.2,234.2,NW1 537.85,224.92,234.2,234.2,NW2 502.72,289.13,234.2,234.2,NW3 478.81,336.84,234.2,234.2,NW4 426.85,409.34,234.2,234.2,NWS 376.36,457.35,235.1,235.1,NW6 320.07,501.14,236.1,236.1,NW7 277.78,542.25,237,237,NWS 260.27,555,237,237,NW9 198.3,548.96,237,237,NW10 B-BARRIER PLACEMENT, 6 , 2 , 0,0 198.3,548.96,237,237,NW10 155.2,543.35,238.1,238.1,NW11 B-BARRIER PLACEMENT, 7 , 2 , 0,0 -150.15,863.17,303,303,NE1 -72. 46,874.59,303,303,NE2 -36.12,887.73,303,303,NE3 -72.14,965.25,303,303,NE4 -101.76,1138.75,303,303,NE5 -107.01,1233.56,300.6,300.6,NE6 -114.47,1314.8,299.5,299.5,NE7 -140.11,1399.35,298.5,298.5,NE8 -175.85,1481.69,298.8,298.8,NE9 -292.8,1533.59,299.6,299.6,NE10 B-BARRIER PLACEMENT, 8 , 1 , 0,0 -292.8,1533.59,299.6,299.6,NE10 -372.84,1595.58,302,302,NE11 -504.26,1604.61,305.5,305.5,NE12 -589.75,1608.85,309.1,309.1,NE13 -669.75,1611.55,309.4,309.4,NE14 -712.46,1580.3,309.4,309.4,NE15 B-BARRIER PLACEMENT, 9 , 1 , 0,0 138.25,1199.1,274.3,274.3,SE10 87.25,1310.79,275.1,275.1,SE11 70.67,1382.43,275.1,275.1,SE12 139.52,1458.15,275.3,275.3,SE13 306.15,1450.26,276,276,SE14 R, 1 , 65 ,10 427,925,275.1,R1 R, 2 , 65 ,10 336,917.48,275.8,R2 R, 3 , 65 ,10 246.07,964.9,276.3,R3 R, 4 , 65 ,10 225,1089,277.5,R4 R, 5 , 65 ,10 Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 13 of 20 172,1155,278.3,R5 R, 6 , 65 ,10 149,1232,278.9,R6 R, 7 , 65 ,10 160,1433,280.3,R8 R, 8 , 65 ,10 302,1441,280.9,R9 R, 9 , 65 ,10 601,1441,287.2,R13 R, 10 , 65 ,10 910,1449,296.8,R17 R, 11 , 65 ,10 400,752,263.9,R60 R, 12 , 65 ,10 562,654,242.2,R88 R, 13 , 65 ,10 475,624,243.0,R89 R, 14 , 65 ,10 600,476,243.0,R90 R, 15 , 65 ,10 811,435,238.8,R92 R, 16 , 65 ,10 873,434,234.2,R93 R, 17 , 65 ,10 940,431,232.8,R94 R, 18 , 65 ,10 758,307,226.,R203 R, 19 , 65 ,10 829,219,223.1,R204 R, 20 , 65 ,10 494.47,247.57,238.9,R213 R, 21 , 65 ,10 466,329,238.9,R214 R, 22 , 65 ,10 423.5,395.08,238.9,R215 R, 23 , 65 ,10 369.27,452.38,239.8,R216 R, 24 , 65 ,10 314.44,497.16,240.8,R217 R, 25 , 65 ,10 244.43,535.42,241.7,R218 R, 26 , 65 ,10 167.14,527.96,242.8,R219 R, 27 , 65 ,10 -675.42,1586.46,314.4,R225 R, 28 , 65 ,10 -586.48,1583.85,314.1,R226 R, 29 , 65 ,10 -504.99,1572.32,310.5,R227 R, 30 , 65 ,10 -411.79,1566.63,307.0,R228 R, 31 , 65 ,10 -259.1,1484.68,303.5,R230 Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 14 of 20 R, 32 , 65 ,10 -192.6,1406.3,303.3,R231 R, 33 , 65 ,10 -164.02,1318.53,304.2,R2342 R, 34 , 65 ,10 -136.53,1245.98,305.3,R233 R, 35 , 65 ,10 -114.56,1171.5,306.3,R234 R, 36 , 65 ,10 -89.22,972.14,308.6,R235 R, 37 , 65 ,10 -161.78,938.85,307.9,R236 K,-l 1 ,5,6,7,8,9 C,C S32 Input Deck - Mitigated Ground Levels STANDARD PACIFIC POINSETTIA PROPERTY (MITIGATED GROUND LEVEL) T-PEAK HOUR TRAFFIC CONDITIONS, 1 2038 , 40 , 21 , 35 , 21 , 35 T-PEAK HOUR TRAFFIC CONDITIONS, 2 1726 , 40 , 17 , 35 , 17 , 30 L-POINSETTIA LANE, 1 N,974,-100,200.6,PO N,804.6,109.7,205.8,PI N,698.7,240.3,209,P2 N,594.6,368.1,224,P3 N,481.9,505,240,P4 N,353.7,658.4,238,P5 N,245.5,801.3,246,P6 N,137.1,995.4,256,P7 N,43,1202.1,262,P8 N,-15.3,1376.2,266,P9 N,-81.7,1565.4,270,P10 N,-115.6,1693,272,P11 N,-152.2,1796.2,272,P12 L-AVIARA PARKWAY, 2 N,-900,1675,285,Al N,-659.5,1710,283,A2 N,-419.5,1756.1,279,A3 N,-118,1820.9,267,A4 N,728,2000,233,A5 B-BARRIER PLACEMENT, 1 , 2 , 0,0 900.,250,218.5,223.5,SWO 810.3, 189.5,218.5,223.5,SW1 747.7,256,218.5,223.5,SW2 754.6,265.7,220,225,SW3 702.8,309.9,220,225,SW4 764.8,362.4,220,225,SW5 B-BARRIER PLACEMENT, 2 , 2 , 0,0 938.9,408.64,235.6,240.6,SW6 Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 15 of 20 870.36,410.97,237.1,242.1,SW7 811.63, 411.2,237.6,242.6,SW8 756.59,400.98,238.9,243.9,SW9 692.63,362.7,239.5,244.5,SW10 576.16,470.54,240.5,245.5,SW11 472.98,559.5,240.8,245.8,SW12 424.62,631.06,240.8,245.8,SW13 482.19,653.09,240.8,245.8,SW14 B-BARRIER PLACEMENT, 3 , 2 , 0,0 547.2,716.1,271.2,276.2,SW15 491.5,707.38,267.3,272.3,SW16 422.92,670.86,258.2,263.2,SW17 366.17,747.7,258.2,263.2,SW18 450.,800,258.2,263.2,SW19 B-BARRIER PLACEMENT, 4 , 1 , 0,0 469.84,935.63,273.2,273.2,SE1 464.54,903.72,273.2,273.2,SE2 431.57,898.75,273.2,273.2,SE3 332.38,889.12,274,274,SE4 287.16,874.21,274,274,SE5 263.56,896.7,274,274,SE6 233.8,943.45,274.5,274.5,SE7 200.08,1061.46,274.8,274.8,SE8 165.87,1122.39,275.6,275.6, SE9 138.25,1199.1,276.3,276.3,SE10 B-BARRIER PLACEMENT, 5 , 2 , 0,0 502.05,212.58,234.2,239.2,NW1 537.85,224.92,234.2,239.2,NW2 502.72,289.13,234.2,239.2,NW3 478.81,336.84,234.2,239.2,NW4 426.85,409.34,234.2,239.2,NWS 376.36,457.35,235.1,240.1,NW6 320.07,501.14,236.1,241.1,NW7 277.78,542.25,237,242,NWS 260.27,555,237,242,NW9 198.3,548.96,237,242,NW10 B-BARRIER PLACEMENT, 6 , 2 , 0,0 198.3,548.96,237,242,NW10 155.2,543.35,238.1,243.1,NW11 B-BARRIER PLACEMENT, 7 , 1 , 0,0 -150.15,863.17,303,303,NE1 -72. 46,874.59,303,303,NE2 -36.12,887.73,303,303,NE3 -72.14,965.25,303,303,NE4 -101.76,1138.75,303,303,NE5 -107.01,1233.56,300.6,300.6,NE6 -114.47,1314.8,299.5,299.5,NE7 -140.11,1399.35,298.5,298.5,NE8 -175.85,1481.69,298.8,298.8,NE9 -292.8,1533.59,299.6,299.6,NE10 B-BARRIER PLACEMENT, 8 , 1 , 0,0 -292.8,1533.59,299.6,299.6,NE10 -372.84,1595.58,302,302,NE11 Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 16 of 20 -504.26,1604.61,305.7,305.7,NE12 -589.75,1608.85,309.2,309.2,NE13 -669.75,1611.55,309.4,309.4,NE14 -712.46,1580.3,309.4,309.4,NE15 B-BARRIER PLACEMENT, 9 , 1 , 0,0 138.25,1199.1,275.3,275.3,SE10 87.25,1310.79,276.1,276.1,SE11 70.67,1382.43,276.1,276.1,SE12 139.52,1458.15,276.3,276.3,SE13 306.15,1450.26,277,277,SE14 R, 1 , 65 ,10 427,925,275.1,R1 R, 2 , 65 ,10 336,917.48,275.8,R2 R, 3 , 65 ,10 246.07,964.9,276.3,R3 R, 4 , 65 ,10 225,1089,277.5,R4 R, 5 , 65 ,10 172,1155,278.3,R5 R, 6 , 65 ,10 149,1232,278.9,R6 R, 7 , 65 ,10 160,1433,280.3,R8 R, 8 , 65 ,10 302,1441,280.9,R9 R, 9 , 65 ,10 601,1441,287.2,R13 R, 10 , 65 ,10 910,1449,296.8,R17 R, 11 , 65 ,10 400,752,263.9,R60 R, 12 , 65 ,10 562,654,242.2,R88 R, 13 , 65 ,10 475,624,243.0,R89 R, 14 , 65 ,10 600,476,243.0,R90 R, 15 , 65 ,10 811,435,238.8,R92 R, 16 , 65 ,10 873,434,234.2,R93 R, 17 , 65 ,10 940,431,232.8,R94 R, 18 , 65 ,10 758,307,226.,R203 R, 19 , 65 ,10 829,219,223.1,R204 R, 20 , 65 ,10 494.47,247.57,238.9,R213 R, 21 , 65 ,10 466,329,238.9,R214 R, 22 , 65 ,10 Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 17 of 20 420,394,238.9,R215 R, 23 , 65 ,10 365,450,239.8,R216 R, 24 , 65 ,10 314.44,497.16,240.8,R217 R, 25 , 65 ,10 244.43,535.42,241.7,R218 R, 26 , 65 ,10 167,527,242.8,R219 R, 27 , 65 ,10 -675.42,1586,314.4,R225 R, 28 , 65 ,10 -586.48,1583,314.1,R226 R, 29 , 65 ,10 -504.99,1572,310.5,R227 R, 30 , 65 ,10 -411.79,1566,307.0,R228 R, 31 , 65 ,10 -259.1,1484,303.5,R230 R, 32 , 65 ,10 -192.6,1406,303.3,R231 R, 33 , 65 ,10 -164.02,1318,304.2,R232 R, 34 , 65 ,10 -136.53,1245.98,305.3,R233 R, 35 , 65 ,10 -114.56,1171.5,306.3,R234 R, 36 , 65 ,10 -89.22,972.14,308.6,R235 R, 37 , 65 ,10 -161.78,938.85,307.9,R236 C,C S32 Input Deck - Mitigated Second Story Levels STANDARD PACIFIC POINSETTIA PROPERTY (MITIGATED SECOND LEVEL) T-PEAK HOUR TRAFFIC CONDITIONS, 1 2038 , 40 , 21 , 35 , 21 , 35 T-PEAK HOUR TRAFFIC CONDITIONS, 2 1726 , 40 , 17 , 35 , 17 , 30 L-POINSETTIA LANE, 1 N,974,-100,200.6,PO N,804.6,109.7,205.8,PI N,698.7,240.3,209,P2 N,594.6,368.1,224,P3 N,481.9,505,240,P4 N,353.7,658.4,238,P5 N,245.5,801.3,246,P6 N,137.1,995.4,256,P7 N,43,1202.1,262,P8 N,-15.3,1376.2,266,P9 N,-81.7,1565.4,270,P10 Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 18 of 20 N,-115.6,1693,272,P11 N,-152.2,1796.2,272,P12 L-AVIARA PARKWAY, 2 N,-900,1675,285,Al N,-659.5,1710,283,A2 N,-419.5,1756.1,279,A3 N,-118,1820.9,267,A4 N,728,2000,233,A5 B-BARRIER PLACEMENT, 1 , 2 , 0,0 900.,250,218.5,223.5,SWO 810.3,189.5,218.5,223.5,SW1 747.7,256,218.5,223.5,SW2 754.6,265.7,220,225,SW3 702.8,309.9,220,225,SW4 764.8,362.4,220,225,SW5 B-BARRIER PLACEMENT, 2 , 2 , 0,0 938.9,408.6,235.6,240.6,SW6 870.36,410.97,237.1,242.1,SW7 811. 63, 411.2, 238.6,243.6,SW8 756.59,400.98,238.9,243.9,SW9 692.63,362.7,239.5,244.5,SW10 576.16,470.54,240.5,245.5,SW11 472.98,559.5,240.8,245.8,SW12 424.62,631.06,240.8,245.8,SW13 482.19,653.09,240.8,245.8,SW14 B-BARRIER PLACEMENT, 3 , 2 , 0,0 547. 2,716.1,271.2,276.2,SW15 491.5,707.38,267.3,272.3,SW16 422.92,670.86,258.2,263.2,SW17 366.17,747.7,258.2,263.2,SW18 450.,800,258.2,263.2,SW19 B-BARRIER PLACEMENT, 4 , 1 , 0,0 469.84,935.63,273.2,273.2,SE1 464.54,903.72,273.2,273.2,SE2 431.57,898.75,273.2,273.2,SE3 332.38,889.12,274,274,SE4 287.16,874.21,274,274,SE5 263.56,896.7,274,274,SE6 233.8,943.45,274.5,274.5,SE7 200.08,1061.46,274.8,274.8,SE8 165.87,1122.39,275.6,275.6,SE9 138.25,1199.1,276.3,276.3,SE10 B-BARRIER PLACEMENT, 5 , 2 , 0,0 502.05,212.58,234.2,239.2,NW1 537.85,224.92,234.2,239.2,NW2 502.72,289.13,234.2,239.2,NW3 478.81,336.84,234.2,239.2,NW4 426.85,409.34,234.2,239.2,NWS 376.36,457.35,235.1,240.1,NW6 320.07,501.14,236.1,241.1,NW7 277.78,542.25,237,242,NWS 260.27,555,237,242,NW9 198.3,548.96,237,242,NW10 Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 19 of 20 B-BARRIER PLACEMENT, 6 , 2 , 0,0 198.3,548.96,237,242,NW10 155.2,543.35,238.1,243.1,NW11 B-BARRIER PLACEMENT, 7 , 1 , 0,0 -150.15,863.17,303,303,NE1 -72.46,874.59,303,303,NE2 -36.12,887.73,303,303,NE3 -72.14,965.25,303,303,NE4 -101.76,1138.75,303,303,NE5 -107.01,1233.56,300.6,300.6,NE6 -114.47,1314.8,299.5,299.5,NE7 -140.11,1399.35,298.5,298.5,NE8 -175.85,1481.69,298.8,298.8,NE9 -292.8,1533.59,299.6,299.6,NE10 B-BARRIER PLACEMENT, 8 , 1 , 0,0 -292.8,1533.59,299.6,299.6,NE10 -372.84,1595.58,302,302,NE11 -504.26,1604.61,305.7,305.7,NE12 -589.75,1608.85,309.2,309.2,NE13 -669.75,1611.55,309.4,309.4,NE14 -712.46,1580.3,309.4,309.4,NE15 B-BARRIER PLACEMENT, 9 , 1 , 0,0 138.25,1199.1,275.3,275.3,SE10 87. 25,1310.79,276.1,276.1,SE11 70.67,1382.43,276.1,276.1,SE12 139.52,1458.15,276.3,276.3,SE13 306.15,1450.26,277,277,SE14 R, 1 , 65 ,10 427,925,285.1,R1 R, 2 , 65 ,10 336,917.48,285.8,R2 R, 3 , 65 ,10 246.07,964.9,286.3,R3 R, 4 , 65 ,10 225,1089,287.5,R4 R, 5 , 65 ,10 172,1155,288.3,R5 R, 6 , 65 ,10 149,1232,288.9,R6 R, 7 , 65 ,10 160,1433,290.3,R8 R, 8 , 65 ,10 302,1441,290.9,R9 R, 9 , 65 ,10 601,1441,297.2,R13 R, 10 , 65 ,10 910,1449,306.8,R17 R, 11 , 65 ,10 400,752,273.9,R60 R, 12 , 65 ,10 562,654,252.2,R88 R, 13 , 65 ,10 475,624,253.0,R89 Ms. Kathy Baker Standard Pacific Poinsettia Property Acoustical Site Assessment ISE Report #98-017 October 14, 2002 (Revised) Page 20 of 20 R, 14 , 65 ,10 600,476,253.0,R90 R, 15 , 65 ,10 811,435,248.8,R92 R, 16 , 65 ,10 873,434,244.2,R93 R, 17 , 65 ,10 940,431,242.8,R94 R, 18 , 65 ,10 758,307,236.,R203 R, 19 , 65 ,10 829,219,233.1,R204 R, 20 , 65 ,10 494.47,247.57,248.9,R213 R, 21 , 65 ,10 466,329,248.9,R214 R, 22 , 65 ,10 420,394,248.9,R215 R, 23 , 65 ,10 365,450,249.8,R216 R, 24 , 65 ,10 314.44,497.16,250.8,R217 R, 25 , 65 ,10 244.43,535.42,251.7,R218 R, 26 , 65 ,10 167,527,252.8,R219 R, 27 , 65 ,10 -675.42,1586,324.4,R225 R, 28 , 65 ,10 -586.48,1583,324.1,R226 R, 29 , 65 ,10 -504.99,1572,320.5,R227 R, 30 , 65 ,10 -411.79,1566,317.0,R228 R, 31 , 65 ,10 -259.1,1484,313.5,R230 R, 32 , 65 ,10 -192.6,1406,313.3,R231 R, 33 , 65 ,10 -164.02,1318,314.2,R232 R, 34 , 65 ,10 -136.53,1245.98,315.3,R233 R, 35 , 65 ,10 -114.56,1171.5,316.3,R234 R, 36 , 65 ,10 -89.22,972.14,318.6,R235 R, 37 , 65 ,10 -161.78,938.85,317.9,R236 C,C