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Aueust 5, 1994 Job No. 9407-O4G <br />drain lines should be bedded on a minimum of two (2) inches of pea gravel or suitable backfill <br />tnatesial. <br />Prior w placing the baolfill material or drain lines, wc re�ommend that a geotextile filter fabric <br />be placed tlong the trench wall petimeur with a minim�► o`'ulap of twelve (12) inches. 'Phe <br />filter fabric ahould be p�rmwble and ahould prevent migration of fines into the trench. We <br />recommend using a BeoceXtile fabric such as Mirafi 140 NS, AMOCO 4545 or equivalent. <br />We recommend that the drain lines placed withi� @►� trenches consist of a mioimum of four (4) <br />�h ����r perfucateG, rigid, PVC pipe. All drains should be dghtline� W a saitable oudet. ; <br />We recommend that all roof drains be ti�hdined to the storm sewer system or other suitable <br />outlet eeporatelY froR► anY foo6ng draina which may be present for the exisdng house. No drain <br />line thould dayll�ht onto any slopes due to the potenliol for Induced slope fattabilfty or <br />eroslon. <br />We recommend that we be engeBed W obsern �°"S�►cdon of drainage, collectoc trenchcs, end <br />drain lines to ensun that our disineBe recommendadons are correcdY followed. <br />6.0 GENERAL <br />The recommenda6ons provided hereie are based on our understanding of the project at this dme. <br />We should be enaaged to revi�W �►° � Pl°°s in order to provide altered, augmenccd, or more <br />��d gcoccchnical recommendationa es mluired• <br />We recommend that we be engaged W observe pin pile installation and liner placements• W� <br />recommend that we be engaged to observe the installation of drainage. These re�ommendadons <br />11 <br />