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Home My WebLink AboutCDP 98-48; Carlsbad Village Resort Hotel; Redevelopment Permits (RP) (3)GEOCON INCORPORATED GEOTECHNICAL CONSULTANTS Project No. 06043-42-01 April 2, 1998 Heritage West Development Company 4370 La Jolla Village Drive, Suite 655 San Diego, Califomia 92122-1252 Attention: Mr. Howard Gad Subject: CARLSBAD HOTEL SITE CARLSBAD BOULEVARD AND BEECH STREET CARLSBAD, CALIFORNIA SUMMARY OF FIELD INVESTIGATION AND EXPLORATORY DRILLING Gentlemen: In accordance with your request, we have performed exploratory drilling for the subject project. This letter has been prepared at your request to summarize the field activities and general soil conditions encountered. The field investigation was performed on February 4, 1998, and consisted of a site reconnaissance and the excavation of 6 small-diameter borings. The borings were excavated to depths ranging from 21 feet to 41 feet below the existing ground surface using a Ingersoll Rand A-300 Drill Rig equipped with 8-inch-diameter hollow stem augers. Relatively undisturbed samples were obtained by driving a 3-inch, O.D., split tube sampler into the "undisturbed" soil mass with blows from a 140-pound hammer falling 30 inches. The sampler was equipped with 1-inch by 2 3/8-inch brass sampler rings to facilitate removal and testing. Bulk samples were also obtained. The soil conditions encountered in the borings were visually examined, classified and logged in general accordance with American Society for Testing and Materials (ASTM) practice for Description and Identification of Soils (Visual-Manual Procedure D2844). Logs of the borings are presented on Figures A-l through A-6. The logs depict the soil and geologic conditions encountered and the depth at which the samples were obtained. The site is underlain by minor amounts of undocumented fill and native Terrace Deposits. Approximately 6 feet of fill was encountered within the northeastem portion of the property. Several small stockpiles of undocumented fill were also encountered within this area. The remains of an old building foundation exist at this location. The undocumented fill is loose and should be removed and/or recompacted during site development. The remaining portion of the site is underlain by Terrace Deposits. The Terrace Deposits consisted of medium dense to dense, reddish brown, silty, fine to medium sand within the upper 3 to 8 feet of the soil profile, becoming a yellowish brown, fine to medium grained sand with a trace of silt at depth. The Terrace Deposits are suitable, from a geotechnical engineering standpoint, for support of the planned development. However, laboratory testing should be performed on selected soil samples 6960 Flanders Drive • San Diego, California 92121-2974 • Telephone (619) 558-6900 • Fax (619) 558-6159 to evaluate in situ density, shear strength, consolidation, compaction and expansion characteristics of the prevailing soil conditions. No soil or geologic condition was encountered that would preclude the development of the site as presently proposed. It is the recommendation of Geocon Incorporated that laboratory testing be performed on the samples obtained during the field investigation. It has been our experience that samples collected from the field investigation will dry out and/or have a grater possibility of being disturbed such that the tme engineering properties of the soils can not be determined if the samples remain untested for a period of time. Upon your request, and after completion of the laboratory testing, Geocon Incorporated will prepare a written report presenting our findings and our conclusions and recommendations regarding the geotechnical aspects of developing the property as presently proposed. The report will include recommended grading specifications, slope stability analysis, foundation design criteria, preliminary pavement sections, excavation characteristics and remedial grading measures (if required). If you have questions regarding this review, or if we may be of further service, please contact the undersigned at your convenience. Very tmly yours, GEOCON INCORPORATED 'James L. Brown Rodney C^^ikesell GE2I76 RCE 55080 RCM:JLB:dmc (4) Addressee Project No. 06043-42-01 - 2 - April 2, 1998 PROJECT NO. 06043-42-01 DEPTH IN FEET SAMPLE NO. SOIL CLASS (USCS) BORING B 1 ELEV. (MSL.) EQUIPMENT DATE COMPLETED m A-300 2/4/98 ;UJ' O, H H UJ UJ^CQ QC UJ - 0 MATERIAL DESCRIPTION - 26 Bl-1 - 2 - - 4 TERRACE DEPOSITS Medium dense to dense, moist, reddish brown, Silty, fine to medium SAND SM Bl-2 Medium dense, moist, Reddish brown to yellowish brown, fme to medium SAND with trace silt 34 h 8 H 10 12 - 14 - - 16 - - 18 20 - - 22 - - 24 - Bl-3 Bl-4 Bl-5 20 SP 27 Bl-6 -Increasing silt at 20 feet 44 Bl-7 48 BORING TERMINATED AT 26 FEET Figure A-l Log of Boring B 1, page 1 of 1 CAH o*x,T^TT^ f.w»,T,^T n ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST SAMPLE SYMBOLS ^ ... DISTURBED OR BAG SAMPLE EJ ... CHUNK SAMPLE 1... DRIVE SAMPLE (UNDISTURBED) 3E ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06043-42-01 DEPTH IN FEET SAMPLE NO. > CD O _J O X I-H _J SOIL CLASS (USCS) BORING B 2 ELEV. (MSL.) EQUIPMENT DATE COMPLETED IR A-300 2/4/98 lUI' o, o H H-^U- CD o - 0 MATERIAL DESCRIPTION - 26 2 - - 4 - - 6 - 8 10 - 12 - - 14 - - 16 - 18 H - 20 - 22 24 H B2-1 I B2-2 I B2-3 I B2-4 I B2-5 I TERRACE DEPOSITS Dense, moist, reddish brown, fine to medium SAND with some silt, weakly cemented SP-SM 43 Medium dense to dense, moist, reddish brown to yellowish brown, fine to medium SAND, weakly cemented 29 SP 32 47 44 BORING TERMINATED AT 26 FEET Figure A-2 Log of Boring B 2, page 1 of 1 CAH SAMPLE SYMBOLS • .. . SAMPLING UNSUCCESSFUL c. . STANDARD PENETRATION TEST 1. . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS . SAMPLING UNSUCCESSFUL E.. . DRIVE SAMPLE (UNDISTURBED) ^ .. . DISTURBED OR BAG SAMPLE E.. . CHUNK SAMPLE I . . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06043-42-01 DEPTH IN FEET SAMPLE NO. > CD O _l O X I- H -J SOIL CLASS (USCS) BORING B 3 ELEV. (MSL.) EQUIPMENT DATE COMPLETED IR A-300 2/4/98 H' a o - 0 MATERIAL DESCRIPTION - 26 - 2 - - 4 - - 6 - - 8 - - 10 - 12 - 14 16 - 18 - - 20 - - 22 - - 24 - B3-1 I B3-2 B3-3 B3-4 I B3-5 I B3-6 SM TERRACE DEPOSITS Dense, moist, reddish brown, Silty, fine to medium SAND Medium dense to dense, moist, reddish brown to light yellowish brown, fine to medium SAND 33 26 SP 33 44 -Abundant black grained sand at 25 feet 49 BORING TERMINATED AT 26 FEET Figure A-3 Log of Boring B 3, page 1 of 1 CAH SAMPLE SYMBOLS . SAMPLING UNSUCCESSFUL C. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS SAMPLE (UNDISTURBED) . DISTURBED OR BAG SAMPLE B.. . CHUNK SAMPLE ¥ •• . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06043-42-01 DEPTH IN FEET SAMPLE NO. > CD O _1 O X SOIL CLASS (USCS) BORING B 4 ELEV. (MSL.) EQUIPMENT DATE COMPLETED IR A-300 2/4/98 MATERIAL DESCRIPTION - 2 - B4-1 - 6 - - 8 - - 10 - 12 - - 14 - - 16 - 18 - 20 22 - - 24 - - 26 - - 28 - I TERRACE DEPOSITS Very dense, moist, reddish brown, Silty, fine to medium SAND SM -Decreasing Silt at 5 feet 68 B4-2 B4-3 B4-4 I Medium dense to dense, moist, light yellowish brown to light reddish brown, fine to medium SAND with trace silt, weakly cemented and cohesionless 19 I 21 SP B4-5 1 -Increasing silt at 20 feet 44 B4-6 I 42 Figure A-4 Log of Boring B 4, page 1 of 2 CAH SAMPLE SYMBOLS . SAMPLING UNSUCCESSFUL c . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS B.. SAMPLE (UNDISTURBED) . DISTURBED OR BAG SAMPLE B.. . CHUNK SAMPLE I • . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06043-42-01 DEPTH IN FEET SAMPLE NO. >-CD O _J O X h-M -I SOIL CLASS (USCS) BORING B 4 ELEV. (MSL.) EQUIPMENT DATE COMPLETED IR A-300 2/4/98 •UJ' a. H UJHO go Q MATERIAL DESCRIPTION - 30 B4-7 1 -Becomes very dense, black grained at 30 feet 61 32 - 34 - 36 38 h 40 H B4-8 I SP -Becomes yellowish brown, fine to coarse grained at 35 feet 66 B4-9 I -Becomes wet at 40 feet 55 BORING TERMINATED AT 41 FEET Figure A-5 Log of Boring B 4, page 2 of 2 CAH SAMPLE SYMBOLS • .. . SAMPLING UNSUCCESSFUL c. . STANDARD PENETRATION TEST • . .. DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS . SAMPLING UNSUCCESSFUL B.. . STANDARD PENETRATION TEST SAMPLE (UNDISTURBED) ^ .. . DISTURBED OR BAG SAMPLE B.. . CHUNK SAMPLE I . .. WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06043-42-01 DEPTH IN FEET SAMPLE NO. > CD O _1 O X SOIL CLASS (USCS) BORING B 5 ELEV. (MSL.) EQUIPMENT DATE COMPLETED m A-300 2/4/98 CQ - 0 MATERIAL DESCRIPTION - 2 - - 4 - - 6 - - 8 - - 10 - - 12 - 14 16 18 h 20 B5-1 B5-2 B5-3 I I TERRACE DEPOSITS Medium dense, very moist, reddish brown, Silty, fine to medium SAND SM -Becomes moist at 5 feet 28 I Medium dense, moist, yellowish brown to light reddish brown, fine to medium SAND with trace silt, weakly cemented, cohesionless 23 B5-4 I SP -Becomes dense at 15 feet 33 B5-5 I -Becomes black grained at 20 feet 39 BORING TERMINATED AT 21 FEET Figure A-6 Log of Boring B 5, page 1 of 1 CAH SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL c. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS B.. SAMPLE (UNDISTURBED) ^ ... DISTURBED OR BAG SAMPLE B.. . CHUNK SAMPLE . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06043-42-01 DEPTH IN FEET SAMPLE NO. >-CD O _J O X J- SOIL CLASS (USCS) BORING B 6 ELEV. (MSL.) EQUIPMENT DATE COMPLETED m A-300 2/4/98 ;UJ' Si UJ; ft Lt v> LIJ6 QC •o u - 0 MATERIAL DESCRIPTION - 2 - - 4 - - 6 - 8 - - 10 - - 12 - - 14 - 16 - 18 - 20 - B6-1 I UNDOCUMENTED FILL Loose to medium dense, very moist, reddish brown, Silty, fine to medium SAND SM -Wood debris at 5 feet 20 B6-2 I TERRACE DEPOSITS Dense, moist, reddish brown to yellowish brown, fine to medium SAND with trace silt 48 SP B6-3 I B6-4 I 46 33 BORING TERMINATED AT 21 FEET Figure A-7 Log of Boring B 6, page 1 of 1 CAH SAMPLE SYMBOLS • .. . SAMPLING UNSUCCESSFUL c. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS . SAMPLING UNSUCCESSFUL B.. . STANDARD PENETRATION TEST SAMPLE (UNDISTURBED) ^ .. . DISTURBED OR BAG SAMPLE B.. . CHUNK SAMPLE ¥ •• . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. Feb-03-98 04:23P ^ 0 p. 02 DUDEK &ASSOCIATES A California Corjjoration Engineering, Planning, Environmental Sciences and Management Services Corporate Office: 605 Third Street Encinitas, California 92024 760.942.5147 Fax 760.632.0164 May 11, 1998 1645-11 Mr. Howard Gad Heritage West Development Company 4370 La Jolla Village Drive, Suite 655 San Diego, CA 92122-1252 PROJECT: Cartsbad ViUage Resort RE: Exterior Noise Assessment Dear Mr. Gad: This report contains our assessment of the noise environment at the proposed Carlsbad ViUage Resort project located in the City of Carlsbad. In summary, the primary noise source at the site is traffic noise from Carlsbad Boulevard. The future exterior noise level at the hotel's proposed recreation area and patio area at the northwestern portion of the site facing Carlsbad Boulevard would exceed the City's exterior noise criteria. To mitigate the noise impact will require the construction of a minimum five-foot high noise barrier along the western portion of the site. In addition, an interior noise study will be required for the hotel prior to issuance of building permits. The interior noise study will determine the interior noise level and type of sound insulation required to mitigate the noise impact. To meet the City's interior noise requirement, it is anticipated that air-conditioning and/or mechanical ventilation will be required, as well as sound-rated windows in certain rooms. 1.0 BACKGROUND Project Setting The Carlsbad Village Resort project site is located at the southeast corner of Carlsbad Boulevard and Beech Avenue {Figure 1). The project would develop the site with a 145-room hotel. This analysis is based on the Site Plan dated May 5, 1998. The primary noise source at the site is vehicular traffic along Carlsbad Boulevard. Carlsbad Boulevard is currently constructed as a four-lane road adjacent to the site. The existing traffic volume along Carlsbad Boulevard is approximately 18,000 average daily traffic (ADT) (Urban Systems 1998). CITY OF OCEANSIDE HIGHWAY^L^^ CITY OF VISTA CITY OF SAN MARCOS PACIFIC OCEAN CITY OF ENCINITAS Carlsbad Village Resort - Acoustical Assessment Report Regional Map FIGURE Carlsbad Viltage Resort • Exterior Noise Assessment City Noise Criteria The City of Carlsbad has estabhshed noise guidelines in the City's adopted General Plan Noise Element and Noise Guidehnes Manual. These guidelines identify compatible exterior noise levels for various land use types. The City has developed a Land Use CompatibiHty for Community Noise Environments Matrix to determine compatibiHty between noise and land uses. Four categories are defined in this matrix and are as follows: normaUy acceptable, conditionaUy acceptable, normaUy unacceptable and land use discouraged. The maximum normaUy acceptable exterior noise level for hotels is a Conmiunity Noise Equivalent Level (CNEL) of 65 dB. This criteria would apply to the proposed outdoor recreation area and patio areas at the hotel site. Noise levels of up to 75 dB are considered conditionaUy acceptable if needed building noise insulation features are included in the design. Interior noise levels are not to exceed a CNEL of 45 dB. Attachment 1 contains definitions of acoustical terms used in this report. AU sound levels discussed in this report are A-weighted. Metliodology The noise analysis methodology in this study is based on the City's noise assessment methodology documented in the City's Noise Guidelines Manual (City of Carlsbad, 1995). The future noise level along Carlsbad Boulevard was determined based on an ambient noise measurement and using Caltrans' SOUND82 Highway Traffic Noise Prediction Model (Caltrans, 1983) with CaHfornia noise emission factors (Caltrans, 1987). The noise model is based on the Federal Highway Administration's traffic noise prediction model (FHWA, 1978). Input used in the noise model included the buildout traffic volume with vehicle speeds of 80 mph (i.e., the posted speed limit). The truck mix used for the roads was 3.52 percent medium trucks and 1.24 percent heavy trucks. The traffic mix is based on vehicle mix surveys conducted by the City (City of Carlsbad 1995). A hard site noise propagation factor was used for the future conditions. 2.0 EXISTING CONDITIONS Ambient Noise Monitoring A noise measurement was conducted at the site to determine the existing noise level. The measurement was made using a caUbrated Larson-Davis Laboratories Model 700 (S.N. 2132) integrating sound level meter equipped with a Bruel &: Kjaer Type 4176 y2-inch pre-polarized condenser microphone with pre-ampUfier. When equipped with this microphone, the sound level meter meets the current American National Standards Institute standard for a Type 1 precision sound level meter. The sound level meter was positioned at a height of approximately five feet above the ground. DUDEK &ASSOCIATES 1645-11 A c.ii/.r.i-c.„.,..(.. May 11,1998 Cartsbad Village Resort • Exterior Noise Assessment The noise measurement location is depicted as Site 1 on.Figure 2. Site 1 is approximately 55 feet from the center Hne of Carlsbad Boulevard. Concurrent traffic counts were conducted during the noise measurement. The measured average noise level was 65 dB at Site 1. Tahle 1 shows the measured noise levels and the concurrent traffic volumes. TABLE 1 MEASURED NOISE LEVELS AND TRAFFIC VOLUMES Site Description llllll ;|ih^i|i;;y^ •, |:Gaj;s;|| |::ivfili 1 55 feet from Center Line to Carlsbad Boulevard 4/2/98 2:10 pm to 2:30 pm 65 dB 323 11 3 Notes: ' Equivalent Continuous Sound Level (Time-Average Sound Level) ^ Medium Trucks 3 Heavy Trucks General Notes: Temperature 65 degrees, light westerly wind. Traffic Noise Modeling The existing CNEL was calculated for the traffic noise measurement location based on the current traffic volume along Carlsbad Boulevard using Caltrans' SOUND32 noise model. To verify the input used in the noise model, the same traffic volume and vehicle composition ratios counted during the noise measurement were used. The modeled value was within one dB of the measured noise level which confirms the assumptions used in the noise model. The CNEL at the measurement sites was calculated by adjusting the traffic volume and truck percentage to a set of normaHzed conditions (i.e., the City traffic mix and existing ADT). The existing traffic noise level at Site 1 is calculated to be 67 dB CNEL. DUDEK ^ASSOCIATES 1645-11 .« C.tti,r,i, C.rp.r.ll.. May 11, 1998 .•• UJ . ••• > ' < / O /' Hi CO ! i i., ^ BASE TOPO/GRADING 1- > 8 r >.•) 1; 4 / ft •vtOTiCniiKM •a IB] SOURCE: Dudek & Associates, Inc.. May 1998 Scale fn Feet Carlsbad Village Resort - Acoustical Assessment Report Noise IVIeasurement Location FIGURE Carlsbad Village Resort • Exterior Noise Assessment 3.0 FUTURE CONDITIONS Carlsbad Boulevard would be the primary traffic noise source in the future. To determine the maximum noise level that could be experienced on-site, buildout traffic volumes were used. The buildout traffic volume along Carlsbad Boulevard adjacent to the project site would be approximately 26,000 ADT (Urban Systems 1998). Exterior Noise Level The proposed hotel would be exposed to a future traffic noise level greater than 65 dB CNEL. At the proposed hotel facade facing Carlsbad Boulevard, the CNEL would reach up to approximately 68 dB. The outdoor recreation area and patio areas at the northwestern portion of the site facing Carlsbad Boulevard would similarly be exposed to a noise level of approximately 68 dB. This noise level would exceed the City's exterior noise criteria by three dB. Interior Noise Level The City requires that interior noise levels not exceed a CNEL of 45 dB. TypicaUy, with the windows open, building sheUs provide approximately 15 dB of noise reduction. Therefore, hotel rooms exposed to an exterior CNEL greater than 60 dB could result in an interior CNEL greater than 45 dB. The noise level at the rooms facing Carlsbad Boulevard would exceed an exterior noise level of 60 dB due to traffic noise along Carlsbad Boulevard. Project Generated Noise Impacts Vehicles within the proposed parking lot located along the southeastern property boundary of the site would generate noise at the adjacent residences. A maximum of approximately 65 vehicle trips would be generated during the p.m. peak hour (Urban Systems, 1998). Based on methodology developed by the Federal Transit Administration for parking lot noise, the peak one-hour noise level would be approximately 54 dB at the adjacent eastern property boundary (FTA 1995). The City has not adopted a noise ordinance that would estabUsh quantitative limits for general nuisance noise generated on private property. The appHcant proposes to construct an approximate six-foot high masonry waU along the eastern property boundary. The proposed waU would reduce the peak hour parking lot noise to less than 50 dB. This noise level would result in a less than significant noise impact. 4.0 MITIGATION Exterior Noise Mitigation of the noise impacts at the outdoor recreation and patio areas would require the construction of a minimum five-foot high noise barrier along the western portion of the site. The location of the proposed five-foot high noise barrier is shown in Figure 3. DUDEK &ASSOCIATES 1645-11 A c.iii.niii c.ri>.r.ii» May 11,1998 > <„ . • o LU LU Dp ii / i ••\^A* .":•>«.: / --y^—L-iy — BASE TOPO/(»ADING{ SCXJRCE: Dudek ft Associates. Inc.. May 1998 Scale In Feet Carlsbad Village Resort - Acoustical Assessment Report Noise Barrier Locations and Heights FIGURE Cartsbad Village Resort • Exterior Noise Assessment The noise barrier may be constructed as a waU, berm, or combination of both. The materials used to construct the noise barrier are required to have a minimum surface density of 3.5 pounds per square foot. Such materials may consist of masonry, 5/8-inch Plexiglas, 8/8-inch tempered glass, or a combination of these materials. The barrier must be designed and constructed so that there are no openings or cracks. Interior Noise To comply with the City's interior noise standard, an interior noise analysis wiU be required for the project. The interior acoustical analysis wiU be required for the hotel prior to issuance of building permits to ensure that interior noise levels would not exceed a CNEL of 45 dB within the hotel rooms. To mitigate the interior noise impact, the hotel rooms would require air-conditioning and/or mechanical ventilation, and could require sound-rated windows in certain rooms. This concludes our noise assessment. If you have any questions, please caU me. Very truly yours, DUDEK &ASSOCL\TES, INC. Mike Komula Acoustician REFERENCES California Department ofTransportation (Caltrans), June 1983, User's Instructions for SOUND52 (FHWA/CA-83/06). California Department of Transportation (Caltrans), 1987, CaUfornia Vehicle Noise Emission Levels, (FHWA/CA/TL-87/03). Carlsbad, City of, September 1995, City of Carlsbad Noise Guidelines Manual. Federal Highway Administration (FHWA), 1978. FHWA Highway Traffic Noise Prediction Modet (FHWA-RD-77-^08). Federal Transit Administration (FTA), April 1995. Transit Noise and Vibration Impact Assessment. Urban Systems Associates, Inc., April 27, 1998. Carlsbad Boulevard Hotel. DUDEK &ASSOCIATES 1645-11 A c.Hi.r.i. cp.r.H.. May 11,1998 Carlsbad Village Resort • Exterior Noise Assessment ATTACHMENT 1 DEFINITIONS Term Definition Ambient Noise Level A-Weighted Sound Level The composite of noise from all sources near and far. The normal or existing level of environmental noise at a given location. The sound pressure level in decibels as measured on a sound level meter using the A-weighted filter network. The A-weighting filter de-emphasizes the very low and very high frequency components of the sound in a manner similar to the frequency response of the human ear and correlates weU with subjective reactions to noise. Community Noise Equivalent Level, CNEL Decibel. dB Time-Average Sound Level (Equivalent Continuous Sound Level) L^^ Maximum A-weighted Sound Level, Sound Transmission Class, STC CNELis the A-weighted equivalent continuous)sound exposure level for a 24-hour period with a ten dB adjustment added to sound levels occurring during nighttime hours (10 pm to 7 am) and a five dB adjustment added to the sound levels occurring during the evening hours (7pm to 10 pm). A unit for measuring sound pressure level and is equal to 10 times the logarithm to the base 10 of the ratio of the measured sound pressure squared to a reference pressure, which is 20 micropascals. The sound level corresponding to a steady state sound level containing the same total energy as a varying signal over a given sample period. L^^ is designed to average all of the loud and quiet sound levels occurring over a time period. The greatest sound level measured on a sound level (L^jJ meter during a designated time interval or event using fast time-averaging and A-weighting. A single number rating of the noise reduction of a building element. DUDEK &ASSOCIATES 1645-11 A Cl*,.,.,. c.r,«.M.. May 11,1998 Cartsbad Village Resort • Exterior Noise Assessment ATTACHMENT 2 NOISE MODELING INPUT AND TRAFFIC DATA Parameter Fatio Area Pool Area ADT 26,000 26,000 Speed (mph) 30 30 MT% 3.52 3.52 HT% 1.24 1.24 Number of Lanes 4 4 Angle of View (degrees) - 90/90 - 90/90 Center Line to Barrier (ft) 75 75 Barrier to Receiver (ft) 5 5 Road Elevation (ft. amsl) 57 60 Receiver Elevation (ft. amsl) 59 60 Barrier Elevation (ft. amsl) 59 60 Receiver Height (ft) 5 5 Barrier Height (ft) 5 5 CNEL (dB) 63 63 DUDEK &ASSOCIATES 1645-11 c.iii.,.i. c.r,.r.,i.. May 11, 1998 URBAN SYSTEM^SSOCIATESy INC PLANNINO t, TMFFIC ENGiNea^fi MARKETING «S PROJECT SUPPORT CONSULTAffTS TO tNDUSTRY AND GOVERNMENT TO; Howard Gad, President COMPANY:^ Heritage West Development Co. FROM: ^\ / Sam P. Kab, II, Senior Traffic Engineer DATE: April 27, 1998 TIME : 11:56 AM SUBJECT: CARLSBAD BOULEVARD HOTEL APR 2 7 1998 plione: ^ fax: ^ (619)458-1141 (619)458-0041 TOTAL PAGES: 2 -f 10 PBgeS of Attachments TRANSMTTTED VIA: Messenger As you requested, Urban Systems Associates, Inc. is providing the following descnption of traffic characteristics related to the 145 room Carlsbad Hotel project. Based on our evaluation of existing, project plus existing, and buildout traffic conditions, it can be concluded that the hotel project would result in no significant traffic impacts and that no traffic mitigation is needed to maintain the City ofCarlsbad Growth Management Program level of service performance standard for the adjacent street segments and intersections. Provided below are descriptions ofthe attachments and a discussion of our traffic evaluation. EXISTING CONDITIONS Attachment 1 shows existing AM and PM peak hour volumes atthe adjacent intersections and the average daily traffic volumes on the adjacent street segments. PROIECT ONLY TRIP GENERATION Attachment 2 shows the project site plan. Attachment 3 shows the expected vehicle trip generation from the 145 unit hotel project and the directional distribution to the adjacent street system. 003897 C:\@fORMS\cbh/disk 4540 KEARNY VILLA ROAD, SUTTE 106 • SAN DIEGO, CA 92123-1573 • (619) 560-4911 • FAX (619) 560-9734 Howard Gad A Wlan Systems Associates, Inc. April 27, 1998 PROIECT PLUS EXISTING CONDmONS Attachment 4 shows the project traffic added to existing peak hour and daily traffic volumes. BUILDOUT TRAFFIC CONDITIONS Attachment 5 shows buildout peak hour and daily traffic volumes, including project traffic. These buildout volumes were derived fi^om the City of Carlsbad traffic model, an appendix to the City ofCarlsbad 1994 Master EIR. SUMMARY Attachment 6 shows a tabulation of intersection and street segment levels of service for existing conditions, project plus existing conditions, and buildout conditions. As shown intersection and street segment levels of service are at "D" or better, which is within the City of Carlsbad's Growth Management Program circulation performance standards. Attachment 7 includes intersection levels of service worksheets. Based on the levels of service calculated, it can be concluded that no intersection or street improvements are needed and that no significant traffic impacts are expected fr-om this project. 003897 2 C:\@FORMS\cbh/disk r ATTACHMENT 1 EXISTING AM / PM PEAK HOUR AND AVERAGE DAILY TRAFFIC (ADT) o V 1 V ^10/5 -^0/0 ^0// 5//0-^ 15//O-^ i Oak Avenue UEGEND XXXy.YXY - AM/PM Peak Hour Traffio VolunM XXX " Average Daily Traffic (ADT) TO « o u < NO SCALE Aprs. 1998 CD-C CBH-Alchwg CA//LSBAD BOaLBVAm /¥07EL - URBAN SYSTEMS— OOOffffS r ATTACHMENT 2 PROJECT SITE PLAN SOURCE Saiemc/Uvingston Architects Apri. 189a CD-C CBH-A2.c(Jr/dwg CAfiLSBAD BOULSyAflD HOTEL - URBAN SYSTEMS— 000998 ^ ATTACHMENT 3 PROJECT ONLY TRAFFIC AND DIRECTIONAL DISTRIBUTION PERCENTAGES AM PM Uaa Rate 1 ADT in Out in Out 145 Rooms I0/Room|l .450 52 35 • 70 46 LEGEND STOP SIGN EXISTI^4G SIGNAL LOCATION PROJECT AREA AVERAGE DAILY TRAFFIC XXX XX% • DIRECTIONAL DISTRIBUTION PERCENTAGES XXXJXXX • AM/PM PEAK HOUR TRAFFIC NO SCALE April 1998 CD-C CBH-A3.dwg CA/HSBAD BOULEVABD HOTEL - URBAN SYSTEMS — 000998 r ATTACHMENT 4 PROJECT PLUS EXISTING AM / PM PEAK HOUR AND AVERAGE DAILY TRAFFIC (ADT) LEGEND xxx AM/PM Peaic Hour Traffic Voiumea Average Daily Traffic Voiumea NO SCALE April. 1998 CD-C CBH-A4.dwg CAHLSBAD BOULEVAHD HOTEL - URBAN SYSTEMS — 000998 ATTACHMENT 5 BUILDOUT WITH HOTEL PROJECT AM / PM PEAK HOUR AND AVERAGE DAILY TRAFFIC (ADT) 25.000 10//5-^ 10//0—• 30/20-y Carlsbad Village Drive V.15/20 1D//0 ^25130 800 Beech Avenue 1.000 26.000 Grand Avenue O 00 lO K-20/20 -4—5/5 ^25/30 10//5-^ 10//0—^ 30/50-y o o i|i Oak Avenue a o be .g OQ «.. o.. is-' li! eo., LEGEND XXX/XYY - AM/PM Peaic Hour Traffic Voiumea xxx - Average DaSy Traffte Volumes NO SCALE v. April. 1998 CD-C CBH-A5.dwg CAHLSBAD BOULEVAHD HOTEL - URBAN SYSTEMS — 00099S r ATTACHMENT 6 INTERSECTION AND STREET SEGMENT LEVELS OF SERVICE Existing Existing ^• Project Buildout LOCATION AM PM AM PM AM PM INTERSECTION Carisbad Boulevard / Christiansen Way A A A A A A Cartsbad Boulevard / Beech Avenue A A A A A A STREET SEGMENT CARLSBAD BOULEVARD Cypress Avenue - Beech Avenue A(170) A(325) A(175) A(325) A(225) A(425) Beech Avenue - Christiansen Way A(170) A(325) A(175) A(325) A(250) A(440) Christiansen Way - Grand Avenue A(165) A(325) A(185) A(335) A(255) A(485) BEECH AVENUE East of Carist)ad Boulevard A(30) A(30) A(55) A(75) A(50) A(55) CHRISTIANSEN WAY East of Carist)ad Boulevard A(25) A(30) A(55) A(60) A(55) A(60) (XXX)=VPH in Peak Direction; Segment Capacity = 1,800 VPHPL April, 1998 CD-C CBH-Ae.wb3 CAHLSBAD BO/JLEVAHD HOTEL - URBAN SYSTEMS— 000998 r ATTACHMENT 7 Page 1 of 4 PAQE OF O q o o A CAPACITY aV" iA\ . o A" \? i f u > o as r • s o CAPACITY o O o \" si ^' 1 \ 1 1 \ ca o r-1' < i fl -1 35 < 3s I April. 1998 CD-C CBH-A7-1.cdr/dwg CAHLSBAD BOULEVAHD HOTEL - URBAN SYSTEMS— 000998 r ATTACHMENT 7 Page 2 of 4 PAQE CP ltt 0 1 w 3 O ^4 o rl CAPACITY 1 :l > o 3 CAPACITY MOVE O ^° CAPACITY MOVE J V 4 £ 3f 3 2 3 - w N>'§ .- 5 M2h <!- O ^4 o CAPACITY 1 .a \ \ ? MOVE —r r 3 o CAPACITY MOVE L O O ¥-!? CAPACITY MOVE < 3i I 3 i April. 1998 CD-C CBH-A7-lcdr/dwg CAHLSBAD BOULEVAHD HOTEL - URBAN SYSTEMS — 000998 r ATTACHMENT 7 Page 3 of 4 PAQE OF [{21. H ox V 3 O CAPACITY MOVE ICU CAPACITY MOVE ICU • o o o >-fc u •< < O 1 ..^ 1 MOVE ! sl Co I 1^ 0 a April, 1998 CD-C CBH-A7-tcdr/dwg CAHLSBAD BOULEVAHD HOTEL - URBAN SYSTEMS — 000998 ATTACHMENT 7 Page 4 of 4 PAQE OF 3 ^ I 21 3 O CAPACITY MOVE 3 O CAPACITY MOVE 3 O %^ Co o V -|cAPACtTY •1 1 \ MOVE > 1 ^1 j I r —l5>r z 7T\ ^^^^ A. "o73T <~5 ICU CAPACITY MOVE ICU CAPACITY MOVE ICU o O O <^ CAPACITY 1 1 V-MOVE r 4 3 ll 3i 5, 1^ 9 e AprU. 1998 CD-C CBH-A7-1.cdr/dwg CAHLSBAD BOULEVAHO HOTEL - URBAN SYSTEMS— 000998