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4" SCH. 40 PVC (PERF.) <br />OR APPROVED EQUAL <br />LEVEL (PLUS OR MINUS 1") <br />10' <br />FINISH GRADE <br />DISTRIBUTION BOX 1 17 <br />MIN.— VARIES I 10" (LOOSE) CAPPING FILL= — <br />— — <br />EXISTING GROUND 4" SCH. 40 PVC (SOLID) SCARIFY ENTIRE SURFACE BEFORE <br />SURFACE 2' �— PLACING CAPPING FILL SOIL <br />III -III -III -III -III -III -I I I I I I-III-III-IIIEXISTING GROUND SURFACE <br />„ INSTALL MONITORING PORT <br />12 1 FROM DISTAL END OF <br />DISTRIBUTION BOX <br />NOTE: <br />THE CONTRACTOR SHALL STAKE AND MEASURE THE EXISTING <br />GROUND SURFACE ELEVATIONS ALONG EACH TRENCH. DRAIINFIELD SECTION <br />COMPARE THE MINIMUM AND MAXIMUM ELEVATIONS <br />TO DETERMINE WHETHER THE TRENCH DEPTH LIMITS CAN BE MET. 0 2 FEET <br />IF SO, EXCAVATE THE TRENCHES BASED ON THE MAXIMUM DEPTH scnlE <br />FROM THE HIGHEST POINT. DEPTH MEASUREMENT TO BE <br />MADE ON THE DOWN SLOPE SIDE OF THE TRENCH. <br />OVERFILL 25% TO <br />2" SLIP CAP <br />ALLOW FOR SETTLING <br />WITH VENT HOLE <br />(NO GLUE) <br />MONITORING <br />4" PERFORATED PIPE <br />6" PLASTIC <br />6' PVC CASING WITH BOTTOM <br />VALVE BOX <br />FILTER FABRIC <br />12" SLOTTED AND E—Z FLOW <br />FILLED WITH DRAIN MEDIA TO <br />\\ 2" <br />3" BELOW TOP OF PORT <br />/ <br />4 <br />2" PVC WITH 4, 0.125" <br />DRAIN MEDIA <br />6„ <br />VERTICAL SLOTS <br />THROUGH LOWER <br />t-- --�I T <br />24" <br />12" AND TOP 2" <br />2" PVC SLIP CAP <br />(SOLVENT WELD BEFORE <br />CUTTING SLOTS) <br />2 END VIEW <br />3 <br />MONITORING <br />PORT <br />— NOT TO SCALE <br />— <br />NOT TO SCALE <br />Figure 4: Drainfield Details <br />