HomeMy WebLinkAboutSS6 & 15 - JWA Noise Monitoring Stations - Written Comments Received After Agenda Printed
September 8, 2015
Item No. SS6 & 15
September 8, 2015, Council Item SS6/15 Comment
The following comment on items on the Newport Beach City Council agenda is submitted by:
Jim Mosher( iimmosher(o).vahoo.com ), 2210 Private Road, Newport Beach 92660 (949-548-6229)
Item SS6115. JWA Settlement Agreement Amendment. Noise Monitoring
Station Technology
I would like to offer as a supplement to my previous comment these tables showing the ever-
increasing absolute Single Event Noise Exposure Level noise limits (SENEL in dB)for jet
overflights of Newport Beach that the City has agreed to over the years by amending the numbers
in the Settlement Agreement, largely at the urging of Landrum and Brown.
Maximum Allowable Quarterly Noise Averages for all flights (Class A limits)
Noise Monitoring Original Agreement Stipulation 2 Stipulation ? Stipulation 10
Station Number (1985) (1997) (1999) (proposed, 2015)
1S 100.0 101.5 101.8 102.5
2S 100.0 101.0 101.1 101.8
3S 98.5 100.5 100.7 1011
4S 93.5 94.1 94.8
5S 93.5 94.6 95.3
6S 95.5 96.1 96.8
7S 92.0 93.0 93.7
Class E ("exempt") Quarterly Noise Limits
Noise Monitoring Original Agreement Stipulation 2 Stipulation ? Stipulation 10
Station Number (1985) (1997) (1999) (proposed, 2015)
Is 86.0 92.5 93.5 94.1
2S 86.0 92.5 93.0 93.5
3S 86.0 89.0 89.7 90.3
4S 86.0 86.0 86.0 86.6
5S 86.0 86.0 86.6 87.2
6S 86.0 86.6 87.2
7S 86.0 86.0 86.0 86.6
The tables have been adjusted to match the changing numbering of the monitoring station
locations, with the first three having been originally designated M6, M7 and M1, and later M-1, M-2
and M-3, and the remaining four having been called M-2 (then M-22), M-3 (then M-21), M-24 and
M-8 (then M-6).
The 1997 adjustments are said to be the result of a "noise demonstration test" conducted in 1992.
1 have been unable to determine when the City Council agreed to that stipulation. The 1999(?)
adjustments followed a previous change-over of monitoring equipment as detailed in Item 15 at the
Council's March 22, 1999, meeting, although in that case I have been unable to locate the signed
stipulation memorializing the changed limits which were reflected in the 2003 extension.