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;736 <br />=;�e 14 <br />ycavations Backfill and Drainage <br />;ycavations for footings, floor slabs or utility trenches <br />rlow a depth of two to four feet below the ground surface, <br />�:11 probably encounter slight to moderate groundwater seep- <br />;�e, To handle groundwater in excavlaced,infthecbottom of <br />= is our opinion that sump pumps,p <br />�e excavation will be adequare. Observations of caving in <br />;,�e of the test pits indicat�as utility trench excavation <br />;,�ould be sloped or braced to provide safe working conditions. <br />�ese provisions should be made the responsibility of the <br />,�ntractor who would be continuously on the site to moniter <br />�e excavation and provide the most economical system. <br />rs site soils for use as backfill would be adequate, provided <br />�e same reco�endations concerning wet weather placement <br />�d moisture ccntrol are followed as presented in the"Structural <br />;ill"section o£.this report. Backfill placed under buildings or <br />;�ved areas should be placed as structural fill and compacted to <br />�ecifi_cations previously recommended. <br />F,� evidenced by Che ponned water in the northwest corner of <br />t1e site, drainage of surface water by infiltration would be <br />-�ery slo�^'• in our opinion a well designed storm water system <br />;rith catch basins in lower elevation areas would adequately <br />handle surface runoff. We further recommend that the exterior <br />ground surface adjacent to the planned structure be adequately <br />sloped away from the building so that ponding of water does not <br />accur. <br />��ommendations for Additional Services <br />�� i� is recommended that Hart-Crowser and Associates, Inc, be <br />provided the opportunity £or a general review of final design <br />� and specifications in.order that earthwork and foundation re- <br />�ammendations may be properly interpreted and implemented in <br />rthe design and specifications. <br />� <br />