1901 MERRILL CREEK PKY 2018-01-01 MF Import

I • � heavy rain. Ground water typically percolata downward through the upper autwash or loose weathend till soil and mova latenlly just above the dense till or hard silt. Gr,�und water levels should be expecred to fluctuate seasonally. I CONCLUSIONS AND RECOMMENDATIONS GEOLOGICAL HAZARD CONSIDERATIONS Portions of the site area qualify u geologicall} ha�ardous areas in accordance with the j^ definitions in thc City of Everett Zoning Code. These areas aro siopes of 40 percent or greater. � Also, two of three: criteria which form a pottion of the definition of landslide ha�ard areas are � r- present at the site. These are (1) slopes greater than 15 percent, and (2) impertneable soils I I frequendy interbedded with granular *oils. With the exception of small su�cial "slough' rype ,. features, we did not observe evidence of lacldslide activiry. We did not observe evidence of the third criteria: springs, ground water seepage or saturated soils. We conclude that the site is suitable for the proposed development. The native medium dense t^ dense soils encountered at � the site will provide excellent support for the planned constniction. It is our opinion that specific corut�uction methods and drainage enhancements can be utilized at the site to mitigate the above , - hazards during grading. In response to the seven items listed in paregreph C of Section 8 of the ; Ciry of Everett Environmentally Sensitive Areas Ordinance, we are providing 4�e following general recommendations below for site development. More detailr! geotecturical � recommendations for each element of the proJect are provided in following sections of this report. �- 1. The proposed development will not crate a hazard to the subject property, surrounding properties or rights-of-way, erosion or sedimentation to off-site properties or bodies of � water. I It is our opinion that if appropriate daign and constn�ction conside�ations are f� inc�cporated into the projxt,the raulting development will be more stable than the present � site conditions. Tt�ese daign and conswction considerations include appropriate site �,. preparation and fill placement, and redundant drainage and erosion control measures. � R'e understand that the buildings will be located in the western and central portions I of the site. The foundations will be constn�cted using concrete retaining walis in a step- � down fashion to accommodate grade trensitions. Therefon, the grading plan will include ' final slopes significantiy flatter than the presmt slopa. Conventioml conctete retaining �- walls, ruckery walls, or mechenically subiliud earth (MSE) walis nuy also be utilized in � other areas to accommodate grede transitions. We ra:ommend tlut �ppropriate drainage measures be designed at grade transitions to hdp maintain postNve dninege of perched r ground water taward the crak. These may include one or several of the following;footing � . r G e o E n [ � n e e r s 4 Ftle No. l�60-006�734U0/111797 �