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HomeMy WebLinkAboutPermit Field Test & Inspection Report 2003-4-21 64/22/2003 B9:23 15417535347 BOIRE ASSOCIATES INC P~GE 01/01 5160 ~~Av~t~ COrvalliS, Oregon 97333 Tel 541.753 5~~ Fax. 541753 Sf? II Bo;re Associates Inc. Geotechnical EngJneering Solutions ',r fitx To: Jeff Harrison From: Todd Boire, P.E. Fax: 541,688,7900 /(~{)1~(" 1112- Pal~tlts: 1 (including cover) Phone: 541.688.7901 Da,.(~: April 21, 2003 : . Re: Jasper Meadows Second Addition - LCJt 89 i . " At y01..lr reque~t, a representative of Soire Assodates Inc. made a visit to the above-referl)l1ced subdiVision to examine and assess the adeq~!cy of a foundation area excavation ma! Ie for building lot 89, Please consider this facsimile tn~nsmittal as a wntten record of our work i , We made a visit to the site on April 14, 2003. Dunng our time onsite, we examined the subject lot, which 15 located at the southeast corner 0" the intersection of S Mica and S. 60th S, 'eets We walked the subject parcel and noted the lot had been excavated, to uniform deptll that extended about 3Y2 ft below grade on the uphill Side. The excavation depth was establiS~~ as necessary to extend below some limited site fill and high plasticity clay ~hat we pre\"lous1y ,Identified as being potentially expansive (see cur Geotechnical Investigation report datec I June 28, 2002 and subsequent construction observation letter dated October 18, 2002). I The excavated grade was also set to accommodate the Originally sloping grade. i We observed the foundation area excavation flxtended to an adequate depth below a t ulk of the unsuitable clay 5011. Subsequent to our \1Islt, we understand the excavated fountlation grade was tilled with about 8 Inches 3-lnch minus, crushed, quarry rock capped with adout 4 inches of 1-inch minus, crushed aggregate. The total rock fill thickness reported to u~ IS at least 12 inches, which meets our minimum f-equirements. Accordingly, we approV~d the foundation area for subsequent footing constru'C.:tion. I We trust this field report meets your currenl neects. questions Please contact us If you ha.. ~ any I i , II i il Ii i , , " '.