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, ,. <br /> PaQe 2 <br /> � <br /> Boein¢ 40-87 and 8B <br /> Conetruction Management Plan <br /> June 19th, 1891 <br /> ground eurface. Minimal �round water aae encountered durias eite eurvey <br /> but perched water may occur at the aurface of the glacial till durina <br /> wet weather. Such accumulation of wnter will vary and will primarily <br /> depond upon nntural drainaQe from the eite. Beceuae of the relatively <br /> � higII finea content, the �lacial till ie extremely eeneitive to chantee <br /> in miature content and ie eneily diaturbed when expoeed to Nater and <br /> conetruction traffic. The apecified eroeion. control plan ie expected to <br /> handle the nmount of rainfall HSWCC and Hoa Broe. anticipete From July <br /> to October, but in Lhe event of a ma,ior atorm. additionnl ailt fence, <br /> qunrry rock, etrnw balee and pumpe will be taken from an oaaite etorase <br /> aren and will be ueed aa required to protect the wetlanda and other <br /> eenaitive areae. ' <br /> Thia conotruction management plan ie baeed on the areae and work <br /> saquence ehown on attached HSWCC conetructi.on eequence plan drted June <br /> � 27th, 1991. Ae ehown in atep one (1.A and 1.8) . clearing Mill <br /> immediately begin in Weet Parkina and at Buildin� BB upon ieevance of <br /> required permita. Utilitiee at Manhole B and 30 (1.D) will beQin alonQ <br /> with demolition and excavation of the electrical room at Buildina 87 <br /> ( l.fi) . After clenring. excavation will beain in BulldinQ 8B aith fill <br /> material being vaed in the Weet Parking. After fill ia oompleted at <br /> the Weet Parking, exceee materinl will be tnken to the Boeina dump <br /> eite. Excavation of Buildina 87 will occur after the• Weet PnrkinQ hna <br /> been opened and care at the Suilding 87 eite hnve bee�t relocated (Step • <br /> 4.A) . Necceeary cut and fill will occur at the Buildna 97 area with all <br /> excase materiele again going to the Boeing dump eite. New utilitiee <br /> around buildinge and in new Boeing roada will then be completed (Stepe <br /> 5,8, and 7) . Remaining eite finiehee will follow. <br /> For conatruction accese, a hnul road to Seaview Blvd will be <br /> conatructed at the location of Lhe future North Perimeter Road North of � <br /> Building 88 . Hoe Hroe. will provide a flagman (City of fiverett <br /> policeman on their payroll) until £uture atreet eisnele are inatalled at <br /> thie intareection. Hoe Sroe_ ..+iti he�ve a full time etreet e9reeper <br /> cleanin Taavired. The ExiatinQ ort erimeter oa will <br /> also e kept clean by Hos Broa. nnd othar contracLora who are ueins thie <br /> road. <br /> The moat important utility activiLy ie completion of the new 48" <br /> etorm line that circlea thia new expanaion. Different contractore will <br /> be working on this line and it neede to be completed before the heavy <br /> winter raine begin. HSWCC (Hoa Broa. ) work on the line be�ine at !IIi <br /> #33 and ends at MH ttB (Reference Auatin drawinge ) . Se�ale will be the <br /> ( contractor that will continue both ende of thie line. See attached <br /> l HSWCC s�hedule for exact dates relatin8 to above activitiea. <br />