32 59TH PL SW 2016-01-01 MF Import

(�tvil�l m,uut n April 19, 1993 a„n„mdl.d. ..,. u.uuii wr,ILJ .iul Select Homes 237 Elm Street Everett, W ishington 98203 Attention: Mr. Randy Clark Building Setback Conditions Hanabrook Development Divisions Ili and IV Everett, Washington Pile No. 2670-005-R06 The purpose of this letter .s to outline reduced buildinh 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 McCouri 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. Pill slopes on Divisions 111 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 henchc d 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 hydroseedel for erosion protection. In our opinion, where slopes have been placed, compacted, graded, and vegetated as described above, the minimum building setback distance can be reduced to 10 feet. The setback distance is the horizontal distance measured from the tions face of the footing to the face of the slope. It should be understood that if die setback distance is reduce; to 10 feet, die risks of losing access, reducing the design life of the foundations and having slope movement impact die house foundations are increased.