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5T I-- <br />P1 <br />n �r <br />I" X__ <br />X . <br />-7T -- ;--- MOUND FILL 4'- 6' <br />TO ALLOW FOR <br />SETTLING <br />-- !� ---GRASS COVER <br />-- 6" TO 34" OF SOIL <br />COVER ABOVE ROCK <br />------�`� 3/4" TO 2 1/2" DIA. <br />CLEAN ROCK <br />3"- 4" LAYER OF UNCOMPACTEC <br />HAY OR STRAW COVERED WITH <br />RED ROSIN PAPER <br />-TRENCH BOTTOM MUST BE <br />THROUGHOUT LENGTH <br />LEVEL <br />--• 2" MINIMUM ROCK COVER ABOVE PIPE <br />// __X:. <br />6" MINIMUM ROCK DEPTH BELOW PIPE <br />-- 4" DIA. RIGID PERFORATED PLASTIC PIPE WITH ONE <br />ROW OF HOLES ALONG BOTTOM <br />/ // ----- WATER ' <br />ROCK, ETC. <br />IMPERVIOUS LAYER SUCH AS CLAYPAN, <br />