1303 MADRONA AVE 2016-01-01 MF Import

� Gco!ochnical Gnginccring Evaluation 1303 bladrona Ave - King Decemher 2, 200G RMI Pilc No. 39306 Page 6 subgradc bclow nny pinnncd slnb-on-gmdc and/or foundations should bc cumpactcd to a densc, non- yielding condition. Arcas observcd to pump or weave, shouW 6e repaired by ovco-cxcavnting nnd rcplacing with thoroughly compacted granular fill (stn�ctural fill). Tempnr:�ry and Perm�nent Slopcs Tempoairy cut-slope staUility is n function of many factors, such as thc typc and consistcncy of soils, depth of thc cut, surcharge loads udjncent to tl�e excavation, length of time a cu[ remains opcn, and thc presencc oi'surfacc or ground w�ter, It is dil7icult undcr thcse vnriablc conditions to estimate a stable, tempornry, cut-slope angle. Tlierefore, it should bc the responsibility of ilie con4�nctor to r.iaintain safc slope configurations since the contruclor is continuously nt [he joU site, able tn observe the nature nna condi[ion of the cut slopcs, and able to monitor die subsurfnce materi¢Is and ground aater conditions encounlcrcd. Por pinnning purposcs, we recommend that temporary cu�s in Q�c slcpe soils bc no steeper than t Horizontal to 1 Vertical (1H: 1V). lf ground water wcrc cncountered, �ve would expect that flatter inclinn[ions would bc necessnry. This informntion is provldcd solcly for tlw benefit of ti�c owner nnd other dcsign consultancs nnd shoiiid not be constracd to intply thnt 121�1I ASSOCIA'PES LLC assnmes responslhility Cor job sitc safety. The on-site cuntrnctor is thc entity snlely responsible for job site safety. We recommend [hat cut slopes be protected from erosion. Mensures taken may include covering cut slopes with pinstic shecting nnd diverting surface runoff ttway from tlie top of cut slopcs. Ne do not recommend verlical slopes for cuts deeper tlinn 4 feet, if �vorker access is necessary. «�e recommend tha[ cut slopc hciglrts and inclinations conform to MSHA/OS}lA st�ndards. Final slope inctinatious for svucturnl fill and cuts in the nntive soils should bc no stecper thnn 2Ti: 1 V. I,ightly compacted 61Is or common fills should be no sleeper thnn 3H: 1 V. Common fills are defined ns fill materials, potcnti111y widi some organics, that nre "trackrolled" into place. They would not meet the compaclion specification of structural fill. i innl slopes should bc planted and covered wid� sVnw or jutc net[ing. "I'he vegetation should be maintnincd until it is estnblished. No fill, grass clippings ur prunings, etc. simuld be pinced on the slopc. RMI ASSOCIATES LLC Q•d 6ST9-6Z9 (09E1 sqoa�ty��y I�N su�csaQ d95�E0 LO 60 �eW