Laserfiche WebLink
CO <br />�97 <br />E <br />.C. <br />♦ slHll( /(I/141. • SlUtlt) <br />January 19'�, 2017 <br />Mr. Ed Bellan <br />National Construction Manager <br />General Dynamics <br />77 "A" Street <br />Needham, MA 02494 <br />16928 Woodinville -Redmond Rd NE, Suite 210 <br />Woodinville. WA 98072 <br />Phone: (425) 487-1732 <br />Subject: PE Review of Antenna Mount Analysis for AT&T <br />Site: WA6808 Everett Golf & Country Club (6107 Berkshire Drive, Everett WA, 98203) <br />Project: LTE 3C-4C Antenna Modification <br />Dear Mr. Bellan, <br />Cornerstone Engineering Inc. (CEI) has completed a review for AT&T's proposed replacement of (3) <br />panel antennas, the removal of (3) panel antennas, as well as the addition of (3) WCS RRHs and (1) <br />surge suppressor known as a 'squid'. The existing and proposed equipment is mounted to T-arms <br />on the monopole located at 6107 Berkshire Drive in the city of Everett, Washington. AT&T also <br />proposes to add (3) 850-MHz RRHs at the ground in the equipment lease area. This review is <br />based on the LTE 3C RFDS dated December 19", 2016 and Camp+ Associates' Antenna Mount <br />Analysis dated December 3'd, 2015. Each sectors panel antennas, TMA's, RRH's and other <br />appurtenances are on a single T-arm assembly, one assembly for each sector. <br />It is CEI's professional opinion that the existing T-arms and their connections will be sufficient for <br />proposed loading based on the information provided in Antenna Mount Analysis from Camp+ <br />Associates_ This determination depends on the installation of appurtenances as described above. <br />Any other configuration or deficiencies of the existing structure will require additional review and <br />analysis. The effects of this site modification on the monopole were Rot considered in this review <br />and must be analyzed separately. <br />Please call us at any time if you have any questions or comments pertaining to the <br />recommendations of this letter. <br />Respectfully, <br />Jonathan D. Gibson, P.E., S.E. <br />Cornerstone Engineering, Inc. <br />AN D <br />,�,�►. of �vA�f C,r� <br />46939 `� t h at (04 t <br />�?pN� Iry <br />Comprehensive Design Solutions for Your Project Success! <br />