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Report �,5?3 Sui Daro tic..„/9 lota0'3 EODESIGNz *2°21-60336 FIELD REPORT Page 1 of 3 GDI Project: f Polygon 113 05 Prepared By. Peyman Chaichi Project Name: Roshak Ridge _. _._......__. 6/10/22 Location: SW Bull Mountain Road and SW Roy Report#: 227 Rogers Road, Tigard Arrival: 1240 Departure: 1350 Weather: Cloudy, 50's Permit#: TBA Site Visit Requested By: Sam (Taylor Morrison) Met With (on site): Blane with Northwest Builder &Sam (Phone) Purpose: Observe subgrade for lot 206, 207 &'208 Outstanding Issues: 1 FR 227(061022) Lot 206 needs more analysis regarding its stability Upon my arrival, I noticed that the contractor has completed excavation of lots 206, 207 & 208 to their grade levels. On lots 207 & 208, the exposed subgrade was consisted of silt with gravel and cobbles. I used %z" diameter steel level, T-probe, to evaluate the subgrade. The subgrade had stiff to very stiff consistency based on its resistance to probe's penetration. On Lot 206, I noticed that the contractor excavated the lot at about 2' from existing retaining wall and cut 2' to 5' of engineering fill behind the wall (please see the attached sketch and plan). The exposed subgrade was consisted of either 3/4"-0" gravel or silt with gravels and cobbles. Based on its resistance to probe's penetration, gravel was dense, and silt was stiff. After speaking with Shawn, NV5's project manager, the contractor was informed that we need to analysis the situation as lot was located to close to the wall. Based on our observations, it is our opinion that subgrade for 207 & 208 observed today, as indicated on the attached site plan, has been prepared in general accordance with our geotechnical recommendations but lot 206 needs stability analysis. Distribution: Attachments: Site Plan (1); Photos (2); Sketch (1) Reviewed by: This report presents opinions formed as a result of our observation of activities relating to geotechnical engineering or environmental services. We rely on the contractor to comply with the plans and specifications throughout the duration of the project irrespective of the presence of our representative. Our work does not include supervision or direction of the contractor,the contractor's employees or agents. Our firm is not responsible for site safety. This field report is a DRAFT representation of our field observations,testing,and preliminary recommendations. The report can only be considered final upon review of the GeoDesign project manager,as indicated by initials in the"Reviewed By'section. Signature: 9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 I www.geodesigninc.com Mro DESIGN FIELD REPORT Page 2 of 3 ,� e � r k� n��ae "t ak. elk��) v x, c ,4 o,, \q, 0 �Pr \ T �,. kke v ,, ,k as tos\y.'Zti �`4A0140 ' t" xi e yak e �� � `�"�a�� a� `` i�H2w , � � „i 1 Photo 1: lot 206 9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 I www.geodesigninc.com DESIGN FIELD REPORT Page 3 of 3 s�� a�r � "� a eA � � Ar as i .+ ; a A��$�Y � !a��� ar��� e; " a A at A k 'a""`"'• 1 F �a \ .e^,� °\i ?" sJ �� ��� + "� �w'Y„ sis 6ws°��� ,,N aura a ^� "s r �'s t`",,'_J _j a a ,, ar a wks�4 w � ". .` Ili �, d„3 w.,wa � �� �� @ 6 t o e ro aA �� r AA a� � r a� sAa ?w �r ��a A t i �� � &< � : NA, ilk m lhA oa\a•� :Vt. Y at Mq�k' ' ';mug sA .'Ot '''t 'fixIIII `,�A ,, e °� ;�� °��� ^ 'iBs asa <r*,� �,h' " 0 ,,.,..;,,.,,t��\a ,ia np0„e h�apm, �' go ,.'g n ,�� 0" o M tA$h aM � .+s"4o01^n 6 r 8,t �'..�'A�A ', Y a �. A, A"�� {,a r 1: t a •''3 1s ye''4.4 ;C �� � , ,x,' r,�. 4 .,. . w• a y 4Nn s h $ rr ^ w i. 1 M m ° �A ^5 `;,P a ; r +• a,ru x „, Mm e du s,:ii ais 's w'. . a Y �,wa + ''"ry 4 m"^ +' N ; bW dp', ,'.;? r c+c'A M.x'*w, �x. ny�r ^ �� A�� saw � � mdr w��. A aty �, e ,� w sk, waa t�' '''xx,. 'l:.iPu. 4`M Y \h h"k it Nya • Photo 2: lot 207 &208 9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 I www.geodesigninc.com i GENE RAI NOTES ,•. r • to (ekrt azz. Edge of excavation to the wall about 16' Pg ,oL.00t,l.COWAN, MATCHUNE NEM••7•■^••�■ •.^ • ..0 •-,•• •Edge of excavation , ••�• �" ' ,. i ., I- / to the wall was 4 • �raaa m� Pat if.c 1 ..r 1} ,%.generaly 2..,..... ��_ ,\�n\ c 1• ' rt. f Fsawn la. ston;nits AMMONS — 'µi " Edge of excavation "' , f r '.' tl, "' e ' e a 'I' to the wall was y ti "� 1, 1E111 » t» } a i �© about I 1 'daa,..r.oe I ��� i ©.. i ,:i j t r -� a • N 6. i » i Gt.., I If/i.— � � I k , ,�' ,.. », », ,. i Polygon at �. { » } 4 _ "' �„ Roshak Ridge E. i 1 ;�' t construction Documents i. / tar aaa In Ile p 666 d 1,5°5 »'� t ,.».. '� I ' ` (( u.I ,» ; \ 5 Y.'»...� ..:_ :,.:"g" I PLAN i 'ell. ,/i5 WI ttr 1 •, o _ ,sets, ELL-55:10N DA NGVD2e \ if -- 1 f 1 A PoPro)(i fok& k©csth i cvv, --it- -ti- e cjv Of 2-04 (5 -4Q(C-044 cd-j W f-c_r3 0,Aok W__G,4+ ozos J\ Clot k'r0" ii OM TO? t 1 1 1 f /2-' f /5 /-----'')? evt \9-1 G;kc 0g•-aJ .—_,2,- s I Ate catt 10 1 r ---1 I 1 , I ,_C5k.ilr' *COAKIrfl , ,,q