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Darr► .:s & �Vfoore ���V"�'��Ih$Irc• •�itc 500 <br /> Srattlr.Nl�shingto�. �2i <br /> y.JF-. (=1k:)523-O;hP <br /> � TWX:910-4JJ4021 Gbk.JJrr.cDA>f[�fOi:E <br /> January 16, 7981 <br /> John F1ukP Mfg. Co., Inc. <br /> P. O. E3ox 43210 <br /> Mov�itlake Tercace, Washington 98043 <br /> Aktention: Mr. Clay Bush <br /> At the request of Ms. Barbara Thomas ot The MCRinley Acchitects, r+e are <br /> pcovidin9 the following comments regardirn the use of bark as a surface <br /> topping on the fire road at youc new facility in Etrerett, Washington. We <br /> undecstand that the City of Everett Fice Department is concerned about <br /> the ttafficability of the bark surfacing as their fire engines use the <br /> roadway, We also understand that traffic volumes ort this perimeter <br /> access coad will be very cmall; the road++ay will be used only du:ing <br /> energencies and by infrequent inspection tours by the Evecett Fire <br /> Department. . <br /> As you aie awace, we recommended that the toadway be developed by <br /> excavating the cucficial soft, saturated glacial till soils within the <br /> coadway alignment to ficm bearing material and placin9 several inches of <br /> ccushed rock foc a bearin9 surface. The firm bearing mateiial and <br /> crushed tock are actually the materials which vill pcovide the support <br /> for the roadway traffic. <br /> It is our opinion that back used as surface topping will not advetsely <br /> effect the performance of the roadway. Although the bark may serve to <br /> retain some moisture, as �,e have pceviously stated, this effect will not � <br /> influence the performance of the coadway as constcucted in accocdance <br /> with our pcevious recommendations. Some surface distress may appaar as a <br /> result of the unusually heavy fire engine loads. We expect this distteas <br /> will not be deep-seated and that it will be easily remedied by snoothing <br /> the bark surface during coutin> maintenance. <br /> Tve trust that this infocmation meetc }rour present needs. If you have any <br /> questions, plea�e contact us. <br /> Yours very tculy, <br /> DA2dE5 6 MDORE <br /> IIY W�w J. ��►�,cc <br /> William J. FTkeboll <br /> Pcoject Engineer <br /> WJE:ss <br /> 11760-001-OS <br /> cc: The McKinley Tirchitects <br /> 2400-1171 Third Avenue <br /> Seattle, Washington 93101 <br /> Attention: Mn. Barbara Thomas <br /> i <br />