118 58TH PL SW 2016-01-01 MF Import

I.n:;inrcl;ti April 19, 1993 feotci11nical. Geoem ironmemal and Geologic Services Select Homes 237 Elm Street Everett, Washington 98203 Attention: Mr. Randy Clark Building Setback Conditions Hanabrook De"clopmc:.t Divisions III and IV Everett, Washington File No. 2670-M5-RO6 The purpose of this letter is to outline reduced building setback conditions for location of homes at the tops of slopes on Divisions III and IV of the Hanabrook Development in Everett, Washington. This has been discussed with Mr. Randy Clark of Select Homes, Mr, Pat McCourt 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 cn-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 wiu,jute matting and hydruseeded Lor erosion protection. In our opinion, where slopes have been placed, compacted, graded, and vegetated as described above, the minimum building setback distance can he reduced to 10 feet. The setback distance is the horizontal distance measured from the front face of the footing to th, face of the slope. It should he understood that if the setback distance is reduced to 10 feet, the risks of losing access, reducing th e design life of the foundations and having slope movement impact die house foundations are increased.