5509 1ST DR W 2016-01-01 MF Import

Geu�Engineeis Ap[il 19, 1993 Gcuicchnical. Grucnrironmrntal and f.enlogic ticrcim. Select Homes 237 Elro Street Everett, Washington 98203 Attention: Mt. Randy Clazlc Building SuUacr Conditions Hanabroolc Devdopment Divisions III and IV Everett, W�Liogton File No. 2670-005-R06 'Ibe purpose of this leua is W ouUine reduced building setback conditions for locadon of homes at the tops of slopes on Divisions III and N of t6e Hanabrook D-velopment in Everett, Was6inyton. 'ibis hac been discussed with Mr• Randy Clazt of Select Homes, Mr. Pat McCourt of Univasal Brokaage Corporation, and Mr. Michad Crowson of W&H Pacific. We 6ave observod no signs of instability on native slopes in Divisions III and IV. Fill slopes on Divisions III aed N wae constructed wit6 strucmral fiil consisting of on-site granular soils under full-time monitoring of a qualified individual from our fvm. 1te structural fill is keyed into existing ficm 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 aii slopes have been covered with jute �aning snd aydrosrxdixl for erosion protection. in uur opin.on, where slopes have been p►aced, compacted, graded, and vegetated as described above, the minimum building setback distance can be reduced to 10 feet. The setback distance is the hc,rizontal distance measured from the front face of the footing to the face of the slope. It should be understwd that if the setback distance is reduced to 10 feet, the risks of losing access, teducing the design life of the foundations and having slope movement impact the house foundations aze incrcased. ,:, , . � ,: ��t ._ , w,�, .