Port of Seattle Noise Level Reports Bob Wells Jan, Feb 1980 0001

&F : ; 4 r :• !i •= ;r) n ;}!!sH=tj HH p 1It ! '.+, r {= .. ? , i }_ I + t ’+J.' . .r }_gt . r. ; }.-}i' $ 4 J. ?f iff + :+L+. r.k: 'P{' ;a #: :) : } } :t IS b=.. }. ''-dq q: +.e : ( i t / }i 'S a aP !AJ [ . • T / } ' 'U FiS'!ENT Scale :{©v©k,5 areWw IRWIn&y aNpr, The decibel scale i$ }gar itIInticciS )l©Ci}3G l§ ; Ingie$ COn£1e:L ca:icula' .Or iS ara =OR€J't :Tea doubling o,s c3,osa:Ly tose level ,cortes}a tx) identIcal nail$e source$ operat: lg at the baal' . litttonoise level 3dB h, F:her thana comb alo; Le power has been raul'crease ne ans thatadi3 :log atit}mic scaleBecause of lqe8 cannot beave .e addition and division Decibel '&:Lues must be t: tien r©convertled to decibelthen averagedwar value$ is faapproximately equiva:Len''e£erence levI ht:e10 inEXceILIart hear,could be heard by a person with$OWI, A change of about laB in a.s rleede'extra Inely quiet room in noise :levelan average person to detect a ££erenc' cleaner ,$ dB. fdr ' A--we$ySt:eH! data are Qxpre$$ed$a Monitor a factor used to $imu:Late the responsThe A--weightIngFeILSaC .dc:Ile pitch tones anwhich $ THOse sensitive toear lng ,§£tive tQ ::Low and high p=Lte IIes88 {'. );'-q iii:FIN:1 TX

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Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]