117 58TH PL SW 2016-01-01 MF Import

(ietlOwEllgilleer: April 19, 1993 Gemechnical. Geoenrirunmemal and Geologic scrrice., Srlect Homes 237 Elm Strw Everett, Washington 98203 Attention: Mr. Randy Clark Building Setback Conditions Hanabrook Development Divisions III and IV Everett, W shington File No. 2670005-R06 The Purpose of this letter is to outline reduced building r,etback conditions for location of homes at the tops of slopes on Divisions III and TV of the Hanabrook Development in i ivcrett, Washington. This has been discussed With Mr. Randy Clark of Select Horses, Mr. Pat M.Cowl Of Universal Brokerage Corporation, and Mr. Michael Crowson of W&H Pacific. We have observed no signs of instability on native slopes in Divisions III and IV. Fill slopes on Divisions III and IV were constructed with structural fill consisting of on-site granular soils under full-time monitoring of a qualified individual from our firm. The structural fill is keyed into existing firm native soils and fill placed to achieve the final slope grades has been properly benched into existing native materials and compacted to 95 percent of MDD (maximum dry density)according to the specifications of the ASTM D-1557 test procedure. In addition, the lots are graded to slope away from the tops of slopes and all slopes have been covered with jute matting and hydroseeded for erosion r'rotection. In our opinion, where slopes have been placed, compacted, graded, and vegetated as described above, :he minimum building setback distanre can be reduced to 10 feet. The setba:k distance is the horizontal distance measured from the front face of the fooling to the face of the slope. It should he understood that if the setback distance is reduced to 10 feet, the risks of losing access, reducing the design life of the foundations and having slope movement impact the house foundations are increased. Gmulgnae•rs.Inc. Mill Rid]Menue S.E liedmond.UA 99K2 iikTlnxn•I-1K,1 ht,l{we.i Ned r MAW IMP fes t'tx,i gl,l�+niu