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RnIiING NnRTH PARF:fNG LO I <br /> CONSTRUCTION AfANAGCN�N I 1'lAN <br /> AUGUST 3Uth, 1�)�J� <br /> ]ack NcCann Co. ���ill supplement the erosion con�rol plans by placing a sira�c on <br /> cxposcd slopes. At thc bottom of thc slopes a tcmporar��collection drainagc <br /> dit�h ��ill dirert the run �ff int� sediment hasins and s��•ales. <br /> Per the soils report b�•Geotechnical CnRineerinR Sen•ices dated G%22, 92 the <br /> suUsurface soil conditions ha�•e a relati�ely uniform profile,consisting of a <br /> se�•eral feet of looce to medium dense ��•eathered glacial till. 7'he glacial till <br /> materials consist rl silty fine to ruarse sand ��ith orrasional gra�el, ��ith cubbles <br /> and boulders ranging in size up to appro�mately 20 ind�es in diameter. There <br /> is also consolidated out���ash deposits underling a C, foot thick layer of glacial till. <br /> N� gmund ��•ater ��•as enmunrered during site s�ils test hut per�hed ��•ater ma�� <br /> �ccur at the surface of the glacial till during��et �ceather. Such accumuia;ion ot <br /> a•ater �cill �•ar�•and �cill primarily depend upon natural drainaRe from the site. <br /> Because of the relati��ely higli fines cantent, the glacial till is extremeh� sensiti�e <br /> to changes in moisture c��ntent ancl is easil� eiiswrt?ed �chen e�posed to ��ater <br /> and consiruc�ion traff�r. <br /> Gco Enginccrs Inc. ���ill hc mcmiu�ring ihc cxisting soil conditions to detcrminc if <br /> unfa�•�rahle snil ��nditi�ns e�ist. Perrentage readings �f m��isture mntent and <br /> compaction results�viU berecorded fnrail fill aperations. If moisturecontent <br /> readinKs are above optimum moisture content percentaRes dzen Jack D1cCann Co. <br /> ���ill follo�c the procedures described in the contract documents. See attached <br /> specification U1111 Ior grading. If current or pending��•eatl�er conditions could <br /> threaten the moiswre��onditioning process fur fill material, ��ork ��ould be <br /> stopped uniil it is sa�isfactory� to proceed. Work ��•ill be discon�inued un�il fill <br /> matcrial is dry enough to��ork on ��•ithout destro��ing c�sting fill matcrial. <br /> 1mp�rted strurtural fill material �an he used in lieu �f�nsite exi a��ated material <br /> if deemed necessar�� b�• Gen F:ngineers Inc. and Roeing. <br /> I he specified erosion control plan is expected to handle the amount of rainfall <br /> ►ack DlcCann Co. anticipates from September ro No.�ember,���hich is the <br /> anticipated iime that eanh��c�rk ��ill be accumplished, but in the event of a <br /> major storm, addicional silt fences, quarr�� rock, stra��• bales ��•ill be utilized u� <br /> protcct thc sitc and �cild lifc corridor. <br /> This construction management plan is based on the areas and phasing scheciulc� <br /> sho���n beloi�•. ns sho��•n in step one clearinR a•ili start immediatel�• on the North <br /> Yarking Lot. After dearing & top soil stripping, exca��ation �cill proceed. <br /> � <br />