1222 GRAND AVE 2018-01-02 MF Import

April 7, 2005 Mr. Don Lcvin L&A .lob No. SA037 Pagc 9 Fill cinbankmcnts plciced ovcr arcas stceper than 15% gradc should bc stnicturally supporicd. 7'hc ground ovcr which stnictural fill is to bc placcd should bc prcparcd in accordancc with rccommcndations in thc Sitc Prc�aration and Gencral Gradink and Excavation Sloncs sections of this report. Stnictural lill shoulJ bc placed in lifis no more than 10 inchcs thick in its loose statc, with cach lifl compactcd to a mininwm percentagc of thc maxinwm dry dcnsity detemiined by AS'I'M D1557 (Modificd Proctor Metliod) as follows: A��plication %of Maxinwm Drv Dcnsitv VVithin building pads of addilions and garagc 95'% Roadway/Drivc�vay subgradc 95% for top 3 fcct and 90'%� bclow I3ascmcnt/Rclaining wall backfill 92% Utiliry trcnch b.�ckfill 9j%, for top d fcct and 90'% hclo�� I3UII.DINC SF.7'13ACIC Thc pun�osc of building sctback li�om tlic top or toc or an o��crly stccp porlion of a slopc is to cstablish a safc buffcr such that if a slopc f:iilure should occur on lhc slopc, thc stability of tl�c stniclurc can bc maintaincd anJ damagcs lo thc slnicturc minimircd. �aclors affccting rcquircd setback of lhe ncw residencc from thc crest of adjacent stc::p slope includc: gcological canstraints (such as soil and hydrological conditions) of thc sitc, hazard from dcvclopment to subjcct property and suirounding properlics/righl-of-��ays, impact of constniction method and tcchniyuc on critical arcas, mitigation of impacts on critical arcas. impact of utility installation and road��ay consu'uctiun on �,colo,�ic:ill�� hazardous ;u'ras, ctc. l hc suhjccl sitc is unilcrl.iin by dcnsc silty sand and h:ird tinc sanJy silt uf hi�h shcar strength ��ith hi��h resist.mcc :igainst slopc f:iilures. Thcrclorr, �cological restraints of tlic sitc which may '�� LIU Sc ASSOCIATES, INC. ,' � �� ` � �