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GRAVELLESS TRENCH CONSTRUCTION DETAILS • <br /> -i( � Nei: <br /> any <br /> �I <br /> 1 1/2" Inspect <br /> Inlet Pipe to Next 9z o <br /> Dro Box � 1 1/2 Male <br /> Well <br /> P <br /> ,,__ . �^ Adapter <br /> , .4a. 6-'JZ Soil Backfill `�� �1'�i <br /> • ,,,b; <br /> % 951.� �r • • • • • • • • • . • • • lel • O. <br /> Corrugated Tubing Covered 1 <br /> 95a? i <br /> nrznn.rlrZnnnc— ' with Geotextile Fabrirh 9 .e) <br /> � nnnnnr��r <br /> Drop Box 9� <br /> 07 <br /> Trench Length = up to 100 Feet . j <br /> Overfill to Allow <br /> NOTES : 1 . Bottom of trench <br /> for Settlingmust be level. Top <br /> of tubing must be level. <br /> 7 <br /> e <br /> Soil r/ 12" of Soil 2. Scarify trench bottom and sid w lIs <br /> Backfill ` e a <br /> 2e 1 Backfill at least 12 inches abode trench botton: <br /> to expose natural soil. <br /> 12" D. D, <br /> -- - - - - * 3. For proprietary products consult <br /> Holes Located <br /> manufacturers performance criteria <br /> 4_24 " at 4 and • <br /> 8 O'Clock <br /> Figure D-29 <br />