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yUo u)\9)6 � W/6 <br /> b.COBALT Cobalt Geosciences,LLC <br /> GEOSCIENCES P.O.Box82243 <br /> Kenmore,Washington 98028 <br /> November 14,2018 <br /> Wayne Smith <br /> wayne 0 wayn esmithre.com <br /> RE: Final Letter <br /> Modular Block Walls <br /> 3631 Wetmore Avenue <br /> Everett,Washington <br /> Dear Mr.Smith, <br /> In accordance with your authorization,Cobalt Geosciences,LLC has prepared a final letter for the <br /> new modular block retaining walls at the referenced site. <br /> We have reviewed construction photographs showing modular block and geogrid placement, <br /> along with backfill and drain rock placement. We also visited the site on June 28,2018 to observe <br /> the final condition of the walls. We observed evidence of geogrid placed between block courses, <br /> wall embedment,wall heights,and soil compaction at the finished subgrade behind the walls. We <br /> were not able to verify geogrid length or drain pipe placement. <br /> In general, the wall construction appears to be consistent with the recommendations in our <br /> design letter. <br /> Sincerely, <br /> Cobalt Geosciences, LLC <br /> le <br /> ° -g�.9m�nnYtSr�a4 5 `ba <br /> Phil Haberman,PE,LG,LEG <br /> D ©LEE1Vi <br /> Principal NOV 2 8 2018 1E) <br /> PH/sc CITY OF EVERETT <br /> Permit ServftP• <br /> www.cobaltgeo.com D--- <br /> (206)331-1097 <br />