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� ' ' � <br /> NOTES <br /> � OUTLET TO �. ALL PIPES SFIOULD BE AT LEAST 4-INCH <br /> TRENCIi DIAMETER. <br /> INLET FROM Z. ELEVATION OF INLET AN� SUPPLY LINE ?O <br /> SEP71C TANK NEXT OROP BOX MAY pE ADJUSTED UP OR <br /> OR F'RE�/�OUS r iu�-, '"F r; � <br /> UiN�' lfvX SUf'PLY UNE �'v'.VN �OFt D_'� _. I.UF 1 t .Fl. �AI <br /> f0 NEXT 7RENCFI. <br /> DROP DOx 3. SUGGESTFO 7RENCH I.IOUiD LEVELs (n) 2 iNCf�Es <br /> �+ ABOVE TOP OF OUTLET PIPE IF PERMEAE3LE <br /> SYN1-HETIC FABHIC COVERS ROCK;. (B) AT TOP <br /> - OF OUTLET PIPE IF HAY OR STRAW AND <br /> BVI�DING PAPER COVERS ROGK. <br /> �� q. INVERT OF INI.ET MUST BE AT LEAS? ONE INCH <br /> FIIGIIER THAN INVERT OF SUPPLY F'��'E TO <br /> NEXT OROP BOX. <br /> -� -OUTLET TO <br /> TftENCN 5 TRENCHES MAY OUTLFT C�NE SIOE Oa �OiFI <br /> SIOfS OF I��+nP f30X. <br /> r__.L. ��— ``:�----�--- -L''_`'i f ---�f-..___'�c��, <br /> Y <br /> i SUPFIY ' , -- r��'_. �-INLEI� <br /> --�-- iNI..E � l �7 - LINE i r -SUPPIY LINE <br /> � � 1. _.._._�' � �.�.. I a�i <br /> � �.�._ � i <br /> ; 2., � *� i 1 i <br /> 1 I"-� T � r _ --t-i �i ._y.- <br /> � I � � i � <br /> � �—� - —OUTLETS—'" --� � `� _ QJTLET TO <br /> TO THENCH � � � <br /> �------- --' �------ - � TRENCH <br /> DROP BOX � <br /> GRAVELLESS TRENCH CONSTRUCTION DETAILS <br /> 1 li�" Insp�C:���n <br /> � Inlet Pipe to Next � �/2 Male Well <br /> Dro� Box Adapter <br /> 12" Soll Backfill <br /> ;> . <br /> Corrugated 7ubing Covered <br /> with Geotexlile F�bri <br /> Drop E3ox <br /> Trench Length = up to 100 Feet <br /> Overtil! to Allow ��S: 1. Bottom ol Irench must be level. T�p <br /> tor Settling oi tubing must be level. <br /> Soil �2• of Soil 2. Scarily 1rQnch bottom �nd sidewalls <br /> � Backlil) � gackfill at leasl 12 inclies above trench bottom <br /> 24" ; � <br /> � , to expose nawral soil. <br /> ' ' 12" <br /> '.l�i`-_ _ '� 3. For propriclory products consult <br /> Holes located manufacturers pertormance criteria. <br /> 24� at 4 and <br /> B O'Clock <br /> � Figure D-33 <br />