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N O Homeowner 1400 Keel Drive Corona del Mar, CA Report emailed to: grantpools@gmail.com SZo2ci-troch Wvo keg I D 14301 Middletown Lane Westminster, CA 92683 Voice/Fax 714.373.3050 dlubman@d1acoustics.com Pool noise report for residence at 1400 Keel Drive, Corona del Mar, CA To: Homeowner April 29, 2021 At about 11:00 a.m. Thursday, April 29, 2021 we measured pool equipment noise at your nearest neighbor's residence to test for compliance with the Newport Beach noise regulation (10.26.025). Newport Beach Residential Noise Regulation For Noise Zone 1 (residential) the Newport Beach regulation's daytime noise level standard (maximum noise level from 7 a.m. to 10 p.m.) is 55 dBA—corrected for ambient noise. The nighttime noise standard (max noise level from 10 p.m. to 7 a.m.) is 50 dBA. The measurement is rounded to the nearest decibel as shown below. I am pleased to report that the measured pool apparatus noise meets the Newport Beach noise standard for 24 hour use. Pertinent details of my findings are reported below. Locations and values of daytime noise measurements Pool apparatus + ambient noise measured at property line: 40.02 dBA Ambient noise at property line not needed Pool apparatus noise at property line rounded to nearest decibel 40 dBA 40 dBA (Pass 24 hour use) The currently installed pool apparatus noise of 40 dBA meets the Newport Beach noise code for 24 hour use since pool noise corrected for ambient does not exceed 50 dBA. If you have any questions about this report, please do not hesitate to contact me at (714) 373- 3050 or by email at dlubmanCa)dlacoustics.com Sincerely yours, .CJ wvtj LAVIOM David Lubman, FASA, FINCE Acoustical Consultant Orange County Certification #200524 DL Acoustics 14301 Middletown Lane Westminster, CA 92683 R Voice/Fax 714.373.3050 dlubman@dlacrostics.com APPENDIX A: Measurement Instrumentation All critical acoustical instruments used in the performance of this test comply with ASTM (American Society for Testing and Measurement) & ANSI (American Nat'l. Standards Institute) requirements. Key elements are as follows: Critical sound measuring instruments (sound analyzer, calibrator, and microphone(s)) are annual calibrated by an independent NAVLAP certified laboratory. The most recent calibration was on 09/16/20. (Annual recalibration takes place around August 13, 2020.) All calibration documents are available for inspection upon request. Critical instruments employed were: Bruel & Kjaer — Type 2270 Type I Precision Sound Analyzer SN # 3002720 Bruel & Kjaer - Type 4189 microphone, SN # 2850866 Bruel & Kjaer — Type 4231 Field Sound Calibrator, SN # 2588671 CS2©LO Ooctl IL{t)c �e.tI I];,, CITY OF NEWPORT BEACH CONINIUNITY DEVELOPMENT DEPARTMENT BUILDING DIVISION 100 Civic Center Drive I P.O. Box 1768 1 Newport Beach, CA 92658-8915 www.newportbeachca.gov 1 (949) 644-3200 SMOKE DETECTOR AND CARBON MONOXIDE SELF -CERTIFICATION (this certification is to be filled out by the permittee or homeowner) Project Address: It j WY\At (a> Ln. 42eu_h Vn ti) Tb Permit Number. A2019— '31'{g Property Owner: ZrVlm-ffMQ n1 Licensed Contractor: fnnn (� n"rocV-1ein ryir4 SLic #: g7Sr23 - 505 . ter ti 1 The State of California now requires that smoke and carbon monoxide detectors must be installed in all residential buildings California Residential Code (CP,C) Soction R3".4.1, CRC R315.� sta+ea in par; +hat existing dwellings be "retrofitted with smoke detectors and carbon monoxide detectors. CRC Section R314.3, CRC R315.3 defines required locations. Both boxes below must be checked: C Carbon Monoxide Alarm: On the ceiling or wall outside of each separate sleeping area in the immediate vicinity of bedrooms or in each hallway outside of the rooms, and each level of the dwelling. Detectors are also required in bedrooms with gas fired appliances Smoke Alarms: Installed in each room used for sleeping purposes, outside each sleeping area, and on each level of the dwelling unit. Retrofitted detectors may be battery operated for buildings where no alterations are performed on the interior. Multiple -purpose alarms (carbon monoxide and smoke alarms) shall comply with all applicable standards and must be approved by the State Fire Marshall. The devices must be installed per manufacturer's specifications. I, the undersigned, hereby certify that I am the permittee or homeowner of the project. I further certify that smoke alarms and carbon monoxide siarms are present and tested to be functional in all the following locations: Signature: _T Date: 1291 _ NOTE: This se -certification is only used for projects to the exterior of the structure where access to the interior of the dwelling by the City of Newport Beach Building Inspector is not achieved during the course of construction. Forms\SmokeDetectorandCarbonMonoxideSelfCert 08112/18