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Report 05/04/2005 15:33 5035988705 GEOPACIFIC ENG INC PAGE 01 .4457 601716 7 GioP rile simmorm h ' Real -World Geotechnlcal Solutions Investigation • Design • Construction Support May 4, 2005 Project No. 03 -8183 r 9 D., Attention; Andy Venture Properties, Inc. 4230 Galewood Street. Suite 100 Lake Oswego, Oregon 97035 Fax No. 503 - 670 -9099 RE: SOIL ENGINEER'S REVIEW OF FOUNDATION EXCAVATION SUBGRADE LOTS ', 92, AND 111 SUMMIT RIDGE TIOAR ,\OREGON References: ` �� 1, GeoPecdRc Engineering Inc., Geotechnlcal Investigation, Summit Ridge Development, Tigard, Oregon, dated May 12, 2003. 2. GeoPacific Engineering inc., Soil and Wall Engineers Summary at Conclusion of Earthwork, Summit Ridge Development - Phase 1, Tigard, Oregon, Revised January 21, 2004 (should state 2009). GeoPacific Engineer, Jim Imbrie, visited Lot 111 Tuesday to review the foundation excavation subgrade. The observed fill soils are compact clayey silt with rocks that probed firm. Some mucking may be required if the subgrade is left exposed to wet weather for a long duration, however the current subgredo is oonsidcred adequate. .8®secron - our observations,`It ` i ouroff'ibn rtii'e- current= foundatkrr- subgrade=ts saitable:Rr* — spread foundation support to a maximum allowable bearing pressure of 1,500 psf. Minimum reinforcement has been recommended in the above Reference 2. Setbacks on the rear yard rockery well are adequate. Also Reviewed the keystone wall removal at the back of Lot 7e. the new nonenglneered wall is being property founded on adequate fill soils and is now appropriately setback from the rear yard rockery wall. GeoPacific also reviewed the footing drain outletted to the rock beckfill on the rock wall. This Is acceptable since the anticipated flow is very small. 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. No deck footing, patio, or other appurtenant structure Subgrades were observed. Our work was performed to the current local standards of practice. No other warranty is herein expressed or implied. If you have any questions, please call. Sincerely, GeoPacific Engineering, Inc. �D PROFEs c' G''� � p glfter q " per kt 14743 2,, OREGON James D. Imbrie, P.E., C.E. . f/4*. ,�0 Geotechnical Engineer ci 4i y P3' �,4 �� e 3e ER D. tM /UIST c i f - 001E07 \ s • GeoP di re Engineering:lnc;`. , Real -World Geotechnical Solutions Investigation • Design • Construction Support February 2, 2005 FEB Project No. 03 -8183 ® 3 2005 Attention; Andy Properties, Inc. 4230 Galewood Street, Suite 100 Lake Oswego, Oregon 97035 Fax No. 503 - 670 -9099 RE: SOIL ENGINEER'S REVIEW OF FOUNDATION EXCAVATION SUBGRADE LOT 79 SUMMIT RIDGE TIGARD, OREGON References: • 1. GeoPacific Engineering Inc., Geotechnical Investigation, Summit Ridge Development, Tigard, Oregon, dated May 12, 2003. 2. GeoPacific Engineering Inc., Soil and Wall Engineer's Summary at Conclusion of Earthwork, Summit Ridge Development — Phase 1, Tigard, Oregon, Revised January 21, 2004 (should state 2005). GeoPacific Engineer, Jim Imbrie, visited the site Monday today to review the foundation excavation subgrade. The observed native soils are stiff clayey silt. Some mucking may be required if the subgrade is left exposed to wet weather for a long duration, however the current subgrade is Based on our observations, it is our opinion that the current foundation subgrade is adequate for spread foundation support to a maximum allowable bearing pressure of 1,500 psf. Minimum reinforcement has been recommended in the above Reference 2. The existing rockery wall along the side of the garage has been lowered and the grade excavated to the bottom of the wall such that it is not surcharging the wall. Our work scope pertains to a geotechnical engineer's foundation excavation review only and the conditions existing and exposed at the time of site visit. No deck footing, patio, o 'other appurtenant structure subgrades were observed. Our work was performed to the current local sta dards of practice. No other warranty is herein expressed or implied. If you have any questions, please call. Sincerely, GeoPacific Engineering, Inc. ,06 PR fi p� c �` 14743 V\ OREGON 6 James D. Imbrie, P.E., C.E.G '! , F 23, A9 sr (�'�o - 0.� Geotechnical Engineer ` �. D. twA .