2001 W MUKILTEO BLVD 2016-01-01 MF Import

L. L (3EOTEC[�IIdICAL ENUINEERiN(3 EXPLORATION AND ANALYSIS PROPOSED McCABE RE3IDENCE R�MODEL 2001 MUKILTEO BOULEVARD EVERETT, WASHINGTON PROJECT NO. 6G-9701022 � .� r�u 1„ „ : : The following is a brief aummary ontline of the geotxhnical conolusions �cd rxommendatioas. This summery slauld be read in complete context with the accomF�YNB �� P�'�P�* ��O°• SaMnrfaa Coadilioea • The subaiufsce eveluation consisted of tluee augered boricy�s w depths of 8r� w 13 fat below the existing ground s�rfacx. • The botings typically aKwuntaed 6 inches of sod and topsoil. Undaiying soils typically consisted of approximately 4 to 7 fat of loose, silty sand with vecyiag gravel content, ova firtn W drn�e, silty sand with less gravel. S�irfaa CondiHon� • Giles perfoc�n� a visuel crconmissance of s�uface conditions along the slopes t6et border the site on the nocth and east Ducing the reconneiuence, several raxnt landslides were noted immediately below the e�tisting residence, as well as along slopes adjacent to neighboting properties, Slope Movement Risk Rednction Measures • Avoid placement of addidonal fill soils, yard wasce, scockpiles of const�ucdon materials, or any other surcharge weights on or above site slopes. • Consider removal of existing yard waste from the top mergins of site slopes, and consider removal of the rockery and fill wedge from beneath t6e dxk. • Replace the existing drain line ihat discherges on the slope east of the house with a Gght line that extends to the bottom of the siope. • Control site surFace water and subsurface dtaina8e discharges to minimiu the amount of wata reaching the slopes on the nocth and e�st sides of the sik. Route founde6on drains,. roof drains, and surface water to dght line discharges that extend to suitable discherge locations such as municipal storm drains or the bottoms of the slopes. • Consider providing lcak conteinment or leak protxtion measures for the outdoor spa on the nonh side of the house. • Perform rcgular inspection, maintenance, and repair on site drainage systems. • Instali a french drain at the top edge of the slopes on the north and east sides of the site.