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� ✓ , . <br /> • iG� . <br /> E�IRTfi� AMLYS/S <br /> ena..oNs s�o�n�o . <br /> .�eourior nrra o���o owaa <br /> sMryww«,�..r..wa w�r Nm iw <br /> aw tw� <br /> May 20, 1987 <br /> Mr. John Croee <br /> 1228 Grand Ave. <br /> SvereLt. Ma. 96201 � <br /> ALtn� Mr. John Croes and Interested Partiee. <br /> Subjeoli Slope StaDility Study For Proposed Deck. <br /> Location� 1228 Grand Avs. , 8verett. Wa. <br /> Daar llr. Cross, <br /> SubmittsE hereMith per your requeat ie a elope ataDility <br /> repor! tor the above mentionsd parcel. The purposs o! this <br /> repori is to pro�ide ssoteoMical informaSion of uss in plan- <br /> ning a proposed deck ad�acenS to a eteep embankmenS. Thi� re- <br /> porS defins� and d�linsatee the params�ers utiliLed in the <br /> ��►alualion. and pro�id�e conolusions and reco�mendation� con- <br /> cerning ths proposed conetruction. <br /> � Sit� Looation And Ds�criptioni <br /> The suD�ect lot is Dounded on th� N�et by an 80 foot embank- <br /> ment wh ch Eipe westeriy at an average angle o! 40 degr���. <br /> This seDankinent was torosd by �rave eutting �y puget SouaA <br /> � during �,n erosional perioE approx. 10�000 qrs. ago. Sinc� <br /> ! the original forsation ot She �mDankment, cuttins for raii- <br /> road grad� anA periodio eloughina of loose uppsr eoil�. a� <br /> well as sidecasting araded soils anQ other debris has r�sult <br /> � � �d in Lhs pr�esn4 topography. <br /> i <br /> �, <br /> Soils encour�tered and •�pos�d in the embankeent consiet of <br /> aenerally fine grained glaciolaouetrine and deltaio sediment <br /> whioh D�oos� pla�lio and �oDil� Mh�n rreathersd and �alurated. <br /> � Siope faiiure occurs along steeply dipping ehailow planee,� <br /> and imoirss the sloughing of Meathered upper eoile wh�re <br /> enriaoe or ground �►ater ent�rs Shs slop�. lJnwaathereG �ub- <br /> soil� appear to havs adeqwte eh�ar etrengLh to saintain a <br /> high angle ot r�poss. <br /> No inQications oi eprings or ssape Ners observed during an <br /> imre�ligation of the sidesiops. <br /> Field Investigation� <br /> A Sraneit, Lape anE eSadia survey �ae conducted on She lot <br /> to estaDlish relevant locatione and elevatione, and to pro- <br /> vids a Daesline for a rangefinder and inclinometer eurvey of <br /> the sidselope. <br /> E,uvT�,'�utrSis' <br />