Laserfiche WebLink
I (. <br /> March 14. 2010 <br /> nddition to Stecvcs Rcsidcncc <br /> L&n Job Nv. ]0-008 <br /> 1'age 7 <br /> of about 25 to 30 1'cct. thc corc of thc slope is formcd with the densc sand and hard silt <br /> soils. 'I�hcrclorc, il ���ould bc unlikcly lor dccp-sc�tcd landslidcs ciitting into thcsc <br /> underlying competent soils to occur on the sub.ject sita 'I'herefi�re. it is our opinion that <br /> thc landslidc haz.�rd ti�r thc subjcct sitc should be minimal. <br /> Erosion Hazard <br /> 'I'hc surticial topsoil and thL wcak soils in thc root zonc draping ovcr thc stccp slopc of <br /> thc subjcct sitc can bc crodcd if thcy �rc dcvoid of vcgetation covcr and o��crly saturated. <br /> Progressivc crosion may result in sh��llow, shin-typc mudllows on lhc stccp slopc. 'l�o <br /> mitigate such hazard. thc vcgctation covcr outsidc ot� construction limits should bc <br /> prescrved and maintaincd. and conccntratcd stormwatcr should not bc dischargcd <br /> uncontrollcd onto thc stccp slopc or anywhcrc within the sitc. Storm runoff ovcr <br /> impervious surlaccs. such as roots and pavcd drivcway should bc capturcd ���ith <br /> undcrgmund drain linc systcros ticd to roof do���nspouts and by catch basins installed in <br /> paved driveway. Water collected into thcse underground drain lines should bc tightlined <br /> to dischargc into a ncarby stonn scwcr. Yard wastc and spoil soils should not disposcd uf <br /> onto thc stccp slopc. I�zposcd unpavcd ground res�dtcd from construction acti��itics <br /> should bc re-secdcd and re-vegetated as soon as possible. Re-seeded and re-��egetated <br /> arcas should bc covcred ���ith cicar plastic larps, as requireJ. until the vcgctation is full}� <br /> cstablishcd. If thc abo��c rccommendations arc fully implcmentcd and obscrvcd during <br /> and allcr construction. thc crosion ha-r_ard of thc subjcct sitc should hc minimal. <br /> LIU & ASSOCIATES, INC. / ��1 <br /> �[� lJ <br /> � <br />