1102 GRAND AVE 2016-01-01 MF Import

Octobcr I l, 2011 �4r. Ilauvey JuUie L&A Job No. 11-U64 Page 5 footpru�t eYcuvation had stuod �•ery stable without w�y si��s of raveling or slouviing. �Ve expeet the soil conditions at the subject resi�lence sile to be similar as those at the itef'erence Site. GROG�iDWAT�R COI�DITIONS ��vcry mutor trickle of grounJwater seepuge (less than 0?5 gpm) ��'as obscrvcd on September 5, 2007, uut of tlie �ut banks at thc southcast corner of die buildiug lootprint excavntion on the Rcference Site. 7liis secping grouudwatcr ��as perchu�g ou top of'the underl;�ing finc sandy silt deposit��hich�vas of extromely lo�v pern�eability. \Ye espect the ground��'ater condilions at the subjcct residence site to be similar to those ttt the Keference Site. The near-surface percl�ed ground��ater would iluctuate seasonally, depending on precipitation, surface runulT, vegetation covcr, site utilizaliun, etc.. Ii may dq° up completely in the dn�cr smmucr munQis and accwnulatc a��d rise ui the �vet �vintcr montlis. The perched groundwater ��ou1d Ilo�� do�r�i-gradient along the surface of tlic underlyine fine sa��dy silt deposit. It is our opinion the shallo�v perched ��ound��ater should havc minimal impact on the stnbility of the steep slopc �ti�idvn fmd beluw the site, pmvidcd that ��egetation cover on thc stccp ;lupc bc preservcl and muinmined wid tl�at no concentrated storiu��atcr be dischurged uncontrolled�vithin the st�bjcct site or onto Qie ud�:�cent steeP s�°Pc. DISCUSSIOIV AND ItEC01�1h1ENDATIOtiS GEOLOGIC lir1ZARD5 Ai�D �11TIGA7'10�1 I,andslidc Hazard ll�e subjcct projcct sitc is most likel)� mantled b}� a thin la}'cr of topsoil mideduin by a layer of densc to ��et7'-dense, line to medium sand about 2 to 3 fcct tluck. ��•liich is in wm underlain hy h�rd tine sand� sih to siln• sa�id dcposits. Tlie dcnse sw�d und hurd silt suil la)'crs w�dcrl}'ing tl�e LlU & ASSOCIATES, INC.