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Report 06/20/2005 15: 55 5 035988705_ GEOPACIFIC ENG INC PAGE 01 033, s�G `tiF Du e oP d Enfllnecring;liic Real - World Geotechnical Solutions investigation • Design • Construction Support June 20, 2005 Project Nu, 03 - 8183 Attention; Andy Venture Properties, Inc. 4230 Galewood Street, Suite 100 I ake Oswego, Oregon 97036 Fax No. 503 -670 -9099 RE: SOIL ENGINEBR'S REVIEW OF FOUNDATION EXCAVATION SUBGRADE LOT 25 AND 87 SUMMIT RIDGE TIGARD, OREGON References: 1. GeoPacific Engineering Inc., Geotechnical Investigation, Summit Ridge Development, Tigard, Oregon, dated May 12, 2003. 2. GeoPeclflc Eiiyineviiny lne., Solt and wall Engineer's Summary at Conclusion of Earthwork, Summit Ridge Development - Phase 1, 'Tigard, Oregon, Revised January 21, 2004 (should state 2004). • CeoPecific Engineer, Jir,I Irnbrie, visited the site to review the foundation excavation subgrades, The observed fill soil is compact silty clay with rocks, Some mucking may be required if the subgrade is left exposed to wet weather for a long duration, however the current subgrade is nonsidered adequate. Based on our observations, it is our opinion that the current foundation subgrade is suitable for 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 adjoining rockery walls are adequate. 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. r e R / % 14743 Y. 4 4-4w < OREGON Jamoa D. Imbrie, r',E., C.C.G. d v44, tg (0 ma y , (� 3 ©-�5 Geotechnical Engineer 4 4,e - t0