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'• � '� RECEIVED <br /> . JUN 28 199i <br /> � _ � Pnae 1 <br /> Z t��"t cf tvtYCIT w/ <br /> sc.Hro��.e-� aL• s+r�r.r <br /> Boeina 40-87 and 88 �oM �na.� owbs { <br /> .►s,� s�r��c�.wl <br /> Conetruction Manaeement Plan <br /> Jwne 19th. 1891 <br /> The goal of thia conetructiom m�nagement plan ie the aucceeeful � <br /> conatruction of clearina, arading, utility conetruction. concrete work <br /> and aaphalt pnving on the Boeina 40-87 and BB expnneion aa depicted on <br /> the plana prepnred by John Graham Aeeociatee dated April 29th, 1981 find <br /> � by �he Auatin Co. dated Mny Bth, 1991, while neeurina the correct and <br /> proper eroaion control methode nnd procedurae nre mnintnined. <br /> The General Contrnctor for the pro3ect will be Howard S. Wriaht <br /> conatruction Co. , Senttle. WA. with Hoe Sroe. Inc. . Redmond, WA; the <br /> main eubcontrnctor performing the clearing, gredina, enrthwork and <br /> utilitiea on the prosect. The clearing and gradinQ quantitiea are as <br /> followe: Cut to fill - 307,.000 tcy ' <br /> Topaoil to Boeing Dump - 80.000 tcy <br /> Aaphalt/concrete to Boeing Dump - 9,800 tcy <br /> Till fill to Soeing Dump - 118,000 tcy <br /> Wood chipa to privite dump - 17,000 tcy <br /> ( During main cut and fill operations, approximntaly 12,000 tcy per day <br /> \ will be moved by Hoa Brothere. Extensive new and modi£ied utility work <br /> will ba perPormed in con�unction with above earthwork. <br /> The Boeing Co. will provide teeting and inepection eervicee through <br /> Profeasi.onal Service Induetriee, Inc. . Damee and Moora will provide <br /> the Goet.echnical conaulting. P.S.I. , Damee and Moore, nnd other <br /> Boeing Co. inapectora will be important team membera with HSWCC <br /> assuring that required construction plana nnd epecificatione by John • <br /> Graham Asaociatee and The Auetin Co. will be met. <br /> The Howard S. Wright Conetruction Co. echedule dated June 27th, 1991 <br /> ie included £or reference. The echedule is baeed on an E. I.S. etart ' <br /> date of July let, 1991 with earthwork and utilitiee on 5 day per week <br /> double ehi£t operation. One ein¢le ahift will nlao be worked on <br /> Saturdaye. The final echedule aill be revised on releaae of fi.I.S. nnd' <br /> required permita. <br /> The pro�ect eroaion control plan will be in accordnnce with the John <br /> Graham Aeaoc. drawinga dated Juna 28th, 1991 end Specification Saction <br /> 02270 dated June llth, 1991 (Attached) . The epecified ailt fencea, <br /> aediment basins, riprap, biofilter awalee will atarc after the firet <br /> stage o£ aite clearing i� completed and before earthwork operetione <br /> begin. Hydroaeeding will be placed at diaturbed land areaa ne <br /> required. Location o£ the wetlande. with aeeociated buffere. and the <br /> required wildli£e corridor et North side of the Weet Parkin� lot will <br /> be carefuly preserved by the earthwork cantrnetor. <br /> � Per Dames & Moore"s Geotechnical report dated September 28th, 1990, <br /> the subaurface sail conditions have a relatively uniform profile, <br /> consisting of a surficial layer of topsoil from about 1 to 3 feet thick, <br /> overlaying glacial till. The glacial till aoila conaiat of mottled <br /> brown and gray silty fina and medium aand, with a little 8ravel nnd <br /> occasional cobblea and bouldera. The undieturbed wenthered till ia <br /> dense to very dense and extends to approximntely 8 to 15 £eet below the <br />