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18" Min. <br />o o o0 <br />°o 0 00 ° O � ° <br />0 oO <br />��° e <br />�Oo ° o ° °000 00 <br />° � <br />� <br />/j <br />0 0 o <br />0 0 o Oo o 00 o -'0 0 <br />o <br />0oao0 0°000 go <br />o O <br />00 o o o <br />o 0 00 0 o 000 0 <br />O 0 <br />o o o <br />00 �o a <br />0 00 0�°00 <br />000 o0 0 <br />o Oo <br />0 �� <br />0 000 0 <br />00 <br />o0 <br />00 0 0o O oho <br />o � ° <br />0 <br />°goo 000Oo 00 00 o g o <br />o0. <br />0 oo ° o 00 <br />oo <br />/ f <br />o 000090 <br />Ooo0 o0 0 <br />oo <br />0 0o <br />0 o 0 0 o 0oo <br />000 e o 0o 0 0 00 0o 20 <br />0000o <br />NOTES: <br />• Free -draining Backfill should consist <br />of soil having less than 5 percent fines. <br />Percent passing No. 4 sieve should be <br />25 to 75 percent. <br />• Sheet Drain may be feasible in lieu <br />of Free -draining Backfill, per ESNW <br />recommendations. <br />• Drain Pipe should consist of perforated, <br />rigid PVC Pipe surrounded with 1-inch <br />Drain Rock. <br />LEGEND: <br />O o00 0 <br />° o0 00 Free -draining Structural Backfill <br />1-inch Drain Rock <br />Structural <br />Fill <br />Perforated Rigid Drain Pipe <br />(Surround in Drain Rock) <br />SCHEMATIC ONLY - NOT TO SCALE <br />NOT A CONSTRUCTION DRAWING <br />Earth <br />Solutions <br />NW L�c <br />Retaining Wall Drainage Detail <br />Four Corners <br />Everett, Washington <br />Drwn. MRS Date 02/15/2019 Proj. No. 6516 <br />Checked CGH Date Feb.2019 Plate 3 <br />