2623 VIEWCREST AVE CLEARWIRE ANTENNA 2018-01-01 MF Import

� . . . : , TE�lC�r�TRE i'.�GIJ Vt:��,�,�. � l�C��'� i. � iG�'JI�IIi�i. !l^CCrc.� �.;-c �.: i . Stawnrf•AII Alleoun•PsrMln� April 25, 2006 — Mr. Randy Clay ��C'��% � - ��,�� ALTAIR CSI Representing CLEARWIRE 10036 NE 130th Lane#1 Kirkland, VJA 98034 Re: Acoustical Report—WA-SN0200-B View Crest Pole Site: 2623 Viewcrest Avenue, Everett, WA 98203 Dear Randy: This report presents a noise survey performed in the immediate viciniry of the proposed Cleanvire telecommunicali�ns faciiity at 2623 Viewcrest Avenue in Everett\Nashington. The survey e�ends from the proposed enclosure location to the nearest property lines. The pur�ose of this report is to document lhe extenl and impact of the acoustical changes due to the proposed cabinet fans. This report contains data on the existing and predicted noise environments, impact criteria, and an evaluation of the predicted sound levels as ihey relate to the criteria, and recommendations for improvement if appropriate. Nuise Code The proposed site is under the jurisdiction o(the City of Everett. Under Everett Municipal Code Ch. 20.08 "Noise Conhol", environmental noise levels at the receiver property lines (Residential District) are limited to 55 dBA during daylime and 45 dEA during nighttime 10:00 p.m. to 7:00 a.m. (£:OQ a.m. on weekends). As this telecommunication, facility is expected to run 24 hours a day, lhe maximum sound pressure level is 45 dBA. Amblent Conditions Exsting sound levels were measured at the site to determine the current ambient sound i��cls. Sound level measurements were taken on April 25, 2006 using a Larson-Davis Modet 820 sound meter'. The average ambient noise Ievel measured was 46 dBA. The weather during the measurement period was clear and tliy. ' Pmcision integrating sound levcl meter thal meets ANSI requirements for a Type 1 instrument. 222 Etruria Stre�t, Suite 100 Scattic, Wasliington 98�09 20G.839.0019 ph // 20G.839.0824 fx Y�