2408 RAVENNA ST 2016-01-01 MF Import

� t 7, � Geocechnical Enginee�ng RepoR Lowell Shon Plat June 2, 1999 � NCA File No.259499 Page 2 l'ROJECT llESCRIPTION ' ; 7'he 0.71 acre site is planned to be subdivided into four lots. A new paved access roaJway is planned i aiong tbe east side of the lots, offset &om a wetlend bufkr area and flood piain boundary of the i Snohumish River furthcv to the eest. 7'he access raad wifl be over an existing sanitary se�ver line• An i existing resiJence in Lot I will rcmain. An existing gacage in Lot 2 will rcmein end possbly be , incotporated swchually into the new residmce. Stotra water infilvation trenches are planned ofn t6e west i side of the residences to in�ltrau roof runoff. We unders�td that the stam water nmoff frotn the roadway msy be outlef towazd the wetland,and tbet treatment would be designed ss required• SCOPE The pu:pose of this study is to exploro and chatacuriu the 9ubsurface conditions, and present recommendations for site development. Specifically, our scope of services include the following: 1. Review avaitable geologic maps of the area. 2. Exploro subsurface conditioas at the site using a subcontracted backhoe. 3. Evaluate the existing fiU embenlm�rnt on the west side of the site. 4. Provide recommendations for siu drainege. ' _ 5. Provide recommrndations Forsite grading,and pavemeut support. 6. Provide recommendations Cor 6uildinQ foundation support. . 7. Aocument our findings and recommandations in a letter report. SITE CONDITIONS Surfac� . ' ' The project site is a nearty mctangular-s6aped parcel, 0.71 s�res in size. The site is locetad south end east of;he intersection of Ravenna Street and the abendoned South First Street rig6t-of-way. Ravenna Street is paved to just short of the existing residence. The apperant absadoned Firs[ Street right-af-way is vegetated and not used as a traftic route. The proposed lots are numbered 1 through 4 from aorth m south. The ground surface of the site ge�rally slopes geatly down to the easL 'Ibete is a 4- to 8-foot higb,steep slope,which drops down to the east along the west property line. Ground swface elevarions on the topographic site plan provided show total verticnl ralief over the site of about 18 feet. The majority of the sita is vegctated with grass saC scettered huit vxs, young deciduous tms, and blackberries. The steep slope along the west property iine is vegeteced wiffi blackbetria and ivy. Slight i -l(5 �i NELSON-COUVRETTE &ASSOClATES, IN . � ! �