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To whom it may concern,
This letter will authorize Tom Denny to act
on our behalf as our permit processing agent.
Tom may apply for and sign all required permit
forms for our proposed pool, spa and landscape
installation.
Thank you.
Owner
LAND�SGAP&rDESICax% INC
2824 �G� � z�lh EL �R�'92 77P�2�3
DL Acoustics
' F I / I / FI ♦ K
Homeowner
1409 Priscilla
Newport Beach, CA
3zoij _biz
ILI0
October 26, 2020
Pool and Spa Noise rept for residence at 1409 Priscilla, Newport Beach, CA
Dear Homeowner:
At about noon on Monday, October 26 20201 measured the pool and or spa 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 Standard
For Noise Zone 1 (residential) the N. B. regulation's daytime noise level standard (maximum
noise level from 10 p.m. to 7 a.m.) is 55 dBA— corrected for ambient noise. The nighttime noise
standard (max noise level from 7 a.m. to 10 p.m.) is 50 dBA. The measurement is corrected for
ambient noise and rounded to the nearest decibel as shown below.
I am pleased to report that measured pool and or spa 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
Uncorrected pool and or spa noise + ambient noise measured at property line: 47.90 dBA
Ambient noise level measured at this location: Not needed
Pool and or spa equipment noise corrected for ambient noise: Not needed
Pool and or spa equipment noise rounded to the nearest decibel: 48 dBA
49 dBA (Pass for 24-hour use)
The currently installed pool and or spa apparatus noise of 49 dBA meets the Newport Beach
noise code for both "daytime" use (7 a.m. to 10 p.m.) and "nighttime" use (10 p.m. to 7 a.m.),
since the 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 dlubmanodlacoustics.com
Sincerely yours,
f" AAA.iI" nMJY6
David Lubman, FASA, FINCE
Acoustical Consultant
Orange County Certification #200524
37019 - OIyZ
2.0 Field Measurements
Measurements were made at the Jan:gary 14, 2';A to determine the
sound level of the pool equipmec r ;, ry line.
The ambient noise level at the prcrrerty vas dominated by typical neighborhood
activity and numerous commercla' iY ;general aviation overflights.
The sound level at the property If war ;>-t.t Jt,A and therefore is in
compliance with the requirement cd the City of Newport Beach Municipal Code.
A Soft dB Piccolodl Integrating ' -",I ;rye! Mel^r, Ser�zl Number
P0219050803 and CEL Instrumr ',;,librator, Serial Number
4/09023134, were used for the ra=,g;am eats.
Respectfully submitted,
Yanchar Design & Consulting car ;.
Carl J. Yanchar
President
_-
YANCHAft DESIGN 8 CGNSUl.71NG GROUP - 3