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Report �, _l.� ' s� c1-2o/J13-5--- / 3 ? , 5,• At,' / . FOUNDATION CERTIFICATION LOT 88 OF "ARLINGTON HEIGHTS" CITY OF TIGARD, WASHINGTON COUNTY, OREGON PREPARED FOR, I STONE BRIDGE HOMES NW 16869 SW 65TH AVE #505 I LAKE OSWEGO, OR 97086 I ---y+8' PUE O LOT 89 25 S8816'24"E 93.02' + I I V + o } 45.00' $ i in ID o CD CD I I ^ M 1 ``O M N N °LOT 88 1 ' ocn� I 10.00' 1 ' Z Z - 28.0 J -N---3.00' ' 0 In cr o I • 1 ' 1 1 I - ---117.0'- 3 .00 + i i cn 1 I 25' 1 ' 1 1 N88'16'24"W 93.02' f / ' " " ..c? i I TRACT J "' LOT 87 ° ,fl — 15' SSE SCALE 1" = 20 FEET L a ice, c _ ;� cat ° CO 07 CO 02 PUE = PUBUC UTIUTY EASEMENT SSE = SANITARY SEWER EASEMENT I, ROBERT RETTIG, A REGISTERED PROFESSIONAL LAND SURVEYOR IN THE,STATE OF OREGON, HEREBY CERTIFY THAT I HAVE ACCURATELY STAKED THE FOUNDATION FOR LOT 88 OF "ARLINGTON HEIGHTS" WITH HUBS AND TACKS. og -CS-2A1 REGISTERED 1 PROFESSIONAL JOB NAME: ARLINGTON HEIGHTS AKS ENGINEERING AND FORESTRY, LLC LAN ► U' YOR 13910 SW GALBREATH DR = F=:�1 ■ . .-_.._ SUITE 100 JOB NUMBER: 2643 SHERWOOD, OR 97140 i ' t PHONE 503925.8799 r "`e O‘G,N DRAWN BY: BDT/BTO FAX 503.925.8969 JANUARY 11, 2005 ;3 = y r4 ? ROBERT D. RETTIG CHECKED BY: RDR ENGINEERING • PLANNING • SURVEYING 601 24L RENEWS: 12/31/14 DWG NO.: 2643CSTK FORESTRY • LANDSCAPE ARCHITECTURE .•Aug. 12. 2013 4:22PM No. 3966 P. 1 ± -'941)( GeoP 7;11 Engineering,Inc. Real-World Geotechnical Solutions •Investigation •Design •Construction Support August 12, 2013 Project No.03-8449 Stonebridge Homes Job No. 1459 /5 37fO/ S Aft-14,_.17,..r� Attention: Andy Thomas r- cf-- 3— O d/575— Stonebridge Homes 4230 SW Galewood St., Ste. 100 Lake Oswego, OR 97035 Fax 503-387-7615 FOUNDATION SUBGRADE REVIEW LOT 88–ARLINGTON HEIGHTS NO.3 15376 SW ARLINGTON TERRACE CITY OF TIGARD,OREGON GeoPacific Engineering Inc. visited the site this week to review the single family home foundation layout on Lot 88. Some soft and organic fill was encountered in the lower central portion of the home. This material was removed and replaced with reject rock. In our opinion, the observed subgrade is now generally adequate for support to an allowable bearing pressure of 1,500 psf. The expected maximum anticipated total and differential footing movements (generally from soil expansion and/or settlement)are 1 inch and 3/A inch, respectively, over a span of 20 feet. At the time of our final site visit, the excavation was complete and exposed stiff fill soils on the front and stiff native soils on the lower footing line. These materials are considered adequate to support the planned foundation loads. Footing-to-slope setbacks are adequate and footing-to-wall setbacks are also adequate. Due to relatively impervious soils encountered throughout the site, all foundations should incorporate appropriate drainage measures in accordance with the International Residential Code. Adequate crawlspace drainage is not something that geotechnical consultants can verify; the purpose of our visit is for observations of foundation bearing conditions only. Care should be taken to avoid saturation or disturbance of footing subgrade soils during and after excavation. We observed some placement of crushed aggregate to protect the subgrade from wet weather. If footing bearing soils become saturated or disturbed, any softened soil or slough should be removed and replaced with crushed aggregate or additional concrete. In general, footing excavations should be cleaned such that no more than about Y2 inch of loose soils is present prior to pouring concrete. 14835 SW 72.1 Avenue Tel(503)5984445 Portland,Oregon 97224 Fax(503)941-9281 'Aug. 12. 2013 4:2 3 PM GeoPacific�tngineenng, Inc. Job No.03-8449 Lot 88 Arlington Heights No.3 Our work scope pertains to a geotechnical engineer's foundation excavation review only and the conditions existing and exposed at the time of our site visit. Within the limitations of scope, schedule and budget, GeoPacific attempted to execute these services in accordance with generally accepted professional principles and practices in the fields of geotechnical engineering and engineering geology at the time the report was prepared. No warranty, express or implied, is made. If you have any questions, please call. Sincerely, GeoPacific Engineering, Inc. Eo PROpps c;C GIN49`'O. OREGQN (4/ v423 100 EXPIRES:08/30120%S James D. Imbrie,G.E. Geotechnical Engineer