1011 39TH ST 2016-01-01 MF Import

GEOTECHNICAL ENGINEERING STUDY AND SETTLEMENT EVALUATION I ZAKOS PRUPERTY I 1011 - 39"' STREET EVERETT, WASHINGTON E-10138 I INTRODUCTION I General I�, This report presents the results of the geotechnical engineerinc� study and settlement � evaluation completed by Farth Cons�_iltants, Inc. (ECI) at the Zakos Property, 1011 - 39"' �I Street, f_verett, Washington. The generai location of the site is shown on the Vicinity Map, II Plate 1 . � The subject site contains an existing single-family residence that ovas constructed in 1989. I The three-story residence has a basement level that daylights to the north. The existing I�� restdence is of relatively liglitly IoaUed wood-frame construcuon witi� a combination ot I slab-on-grade and wood joist iloor systems supported on conventional foundations. I The site contains an approximately si�;ty 160) foot ong, four to six foot higli, northeast• I trending railroad tie landscapinc� wall located approximately fifteen (15) feet to the north of ' the residence. The landscaping wall supports up to approximatel; eight feet of very loose � fill. The fill area creates a relatively level backyard area for the existing residence. It is our understanding the landscapir.� wall ��vas constructed around the same lime as the residence. The founua�iun desiyn for the wall was not available, however, the wall appears to be founded on shallow cuncrete footings that are visible along the base of the wall. The v��all appears to be laterally restrained bv tiebacks extending back toward the residence. The north and east sides of the residence contain a wrap-around deck that �xtends out I� over the adjacent slope areas. i� Al tlie tiine of our stuely, tlie eastern lialf of tlie liinber landscapiny wall �,rvas rotated downslope and portions of the soil backfill on the upslope side of the wall had washed out , leaving an approximately twenty-(our (24) inch diameter hole. It is our understanding the i wall rotation was present in 2000 �vhen ihe current owners purchased the property, however it is not known when the rotation occurred or if it is the result of a gradual, on-going process. �� The wall rotation and associated settle�nent have also alfected two deck supports on the nortlieast corner of tlie residence tliat appear to liave settled and moved laterally Jownslope. Earth CUnSu�tdnL, �na �