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GRAVELLESS TRENCH CONSTRUCTION DETAILS <br /> 1 1 /2" Inspection <br /> Inlet Pipe to Next 953,,/± Well <br /> Drop Box 1 1/2 Male <br /> • <br /> S- Adapter <br /> i <br /> J6-iz Soil Backfill - Jw '� <br /> �. • ' • • •• •• •• •• •• •• •• 171:7 . • • • •V • ��/ <br /> 9sz$ Corrugated Tubing Covered <br /> • <br /> with Geotextile FabrisSnnnnnnnnr <br /> 9s�.v- <br /> Drop Box 95/ 2.,,,--1 <br /> Trench Length = up to 100 Feet <br /> 4//4e' <br /> L. 74,74a <br /> Overfill to Allow 1 <br /> for Settling <br /> NOTES : 1 . Bottom of trench must be level. Top <br /> of tubing must be level. <br /> . "Tf-f-..._,.. Soil�// 12 of Soil 2. Scarify trench bottom and sidewalk <br /> Backfill Backfill <br /> 24 ' at least 12 inches above trench botior <br /> to expose natural soil. <br /> 12" v• p. <br /> iD., =D <br /> � -0--- <br /> : <br /> '� 3. For proprietary products consult <br /> Holes Located <br /> manufacturers performance criteria <br /> 24" at 4 and <br /> 8 O'Clock <br /> Figure D-29 <br />