2106 GRAND AVE 2016-01-01 MF Import

E-12863 GEOTECHINUL ENGINEERING 57LDY March 17,2007 � DISCUSSION AND RECOMMEN�ATIONS 1 General , Based on the results of our study, in our opinion, construction of the proposed multifamily residence building is feasible from a geotechnical engineering standpoint. The proposed , building may be supported on a conventional spread and continuous footing foundation system bearing on competent native soil or structural fill. Concrete slab-on-grade floors should be similarly supported. , This report has been prepared for specific application to this project only and in a manner ' consistent with that level of care and skill ordinarily exercised by other members of our profession currently practicing under sirnilar conditions in this area. This report is for the exclusive use of Mr. Jim McNeil and his representatives. No warranty, expressed or implied, , is made. This report, in its entirety, should be included in the project contract documents for the information of the contractor. , Environmentally Sensitive Areas Considerations The steep slope located to the west of the site is mapped as a meclium and a very high slope , on the Snohomish County Web site. The subject slope is located approximately 55 feet west of the proposed building to the west of the alley that borders the west side of the site. Based on our review of the Coastal Zone Map for Washington, the slope is comprised of artificial fili ' and is mapped as modified (tit) under the slope stability portion of the map. In our opinion, the proposed development wiil not adversely affect the stability of the steep , slope. The primary basis for this conclusion is the level of development in the area and the approximate 55-foot buiiding setback from the top of the slope. � Site Preparation and General Earthwork Based on our experience with similar projects, site earthwork will consist of installing erosion , control measures, removing the existing building and garage, installing soldier piles, grading the site to provide building grades, and backfilling the foundation. ' Stripping ' Prior to stripping, on-site erosion control measures consisting of silt fencing and surface water conirols should be instailed around the perimeter of the site. , The building and pavement areas and areas to receive structural fill should be stripped and cleared of surface vegetation, organic matter, existing foundations or pavements, and other deleterious material. Based on the thickness of the topsoil and vegetation cover encountered ' at our exploration locations, we anticipate a typical stripping depth of 4 to 6 inches. The actual stripping depth should be based on field observation at the time of construction. ' Page 5 EARTH CONSUl.T7NG INCORPORATED