4816 HARBOR LN 2016-01-01 MF Import

J . KEITH CROSS, P.E. Geotechnical Engineering Consultanl (425) 747-2150 6358 121" Avenue SE, Bellevue, V�'ashington 98006-4425 October 22, 2008 J��OK-u�� Gary Conard Conard Construction, Inc. 13404 4'" Place SE Snohomish, Washington 9829021 Geotechnical Engineering Construction Monitoring, Deck Replacement, Joe Johnston Residence, 4816 Harbor Lane, Everett, Wa�hinyton Project No. 9463-001 This letter summarizes geotechnical construction monitoring for the above referenceC �roject. On October 20 and 22, 2008, I made visits to the above referenced site to observe the bearing soil for pier footings for the two replacement decks under construction. Two locations had been excavated for the southwest corner deck, with three locations for the northwest corner deck. Per the structural drawings I reviewed, and discussed with the siructural engineer, these pier footings were designed as 24-inch diameter piers, with an allowable soil bearing pressure of 2,000 psf. This was an allowable bearing pressure postulated as available in my July 29, 2008 letter. At my October 20, 2008 visit, it was my opinion that the two pier excavations fo� the southwestern corner deck had been excavated into a firm native bearing soil with an allowable bearing pressure in excess of 2,000 psf. I also observed the soils exposed in the excavations for the three northwestern corner deck, but was not convinced that they were excavated through fill soils into the firm native soils. The two western excavations may have reached the required aliowable bearing, but the eastern location was still based in fill at that time. On October 22, 2008, I observed the soils exposed in the fuRher excavated three pier locations for the no�htivestem ccmer deck. It was my opinion that :! �ese pizr =xcavatio: is for the northwestern corner deck had now been excavated into a firm native bearing soil with an allowable bearing pressure in excess of 2,000 psf. I indicated that loosened soils should be removed from the base of the excavation prior to concrete placement. I trust that this input meets your needs at this time. if there are any questions concerning this letter, or if we can provide additional services, please call. Yours very lruly, /�i✓�/� N" ' J. Keith Cross, P.E. �i1�ug