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Basement or Shallow Foundation Wall <br /> Slab on Grade 12"Free Draining Backfill and/or Drainage Mat <br /> Attached to Wall <br /> \ I I <br /> Backfill Soils Compacted <br /> per Geotechnical Report Native Soils Benched <br /> as Required <br /> '��.•S.i�•� <br /> •• ��;�•� _ Filter Fabric Over Rock <br /> •' ••' • • (Mirafi 14oN) <br /> the <br /> •1'•i 0••,. •• <br /> — 3//4"Washed Rock or <br /> Clean Angular Rock <br /> 4"Diameter Perforated Pipe <br /> Not to Scale <br /> Cobalt Geosciences,LLC <br /> PO Box 1792 <br /> Typical Foundation Drain Detail North Bend,WA 98045 <br /> C 0 BA�TAttachment (206)331-1097 <br /> G E O S C I E N C E S www.cobaltgeo.com <br /> philP cobaltgeo.com <br />