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1 RENCH ROCK COVERED WITH PERMEABLE <br /> SYNTHETIC FABRIC OR 4" LAYER OF MARSH HAY CR <br /> -- 4" DIAMETER INSPECTION <br /> - PIPE TO NEXT STRAW COVERED WITH UNTREATED BUILDING <br /> INLET DROP BOX PAPER (RED ROSIN) — 7 WELL WITH CAP <br /> ` . <br /> / _ '� _EAkTH BACKFILL AT LFA sJ� -\ V <br /> . El _j ( 6 .ABOVE TOP OF ROCK <br /> __,.� �_ !�`- D 151 1�16U1 TUN_ PIPE __ __ <br /> 7; <br /> AT LEAST 6" DEPTH OF CLEAN `�4 <br /> _ -(.cps;;c ROCK 3/4" TO 21/2' DIA. SEE NOTE 5. 4 ° �` <br /> C <br /> DROP BOX I / �' <br /> I-� ------------ MAXIMUM LENGTH = 100 FEET --------H <br /> OVERFILL NOTES: I . BOTTOM OF TRENCH MUST BE LEVEL. TOP OF TRENCH <br /> 1 — 4 TO 6 INCHES ROCK MUST BE LEVEL. <br /> _ _ _ INSPECTION <br /> '— WELL 2. SLOPE ON DISTRIBUTION PIPE IS BETWEEN <br /> y_ <br /> 6 TO 12 OF LEVEL AND 4 INCHES PER 100 FEET. <br /> RECOMMENDED SLOPE IS LEVEL. - <br /> —141-33C/ BACKFILL <br /> SOIL BACKFILL 3. DISTRIBUTION PIPE CAN BE PERFORATED <br /> _ PLASTIC INSTALLED WITH ONE ROW OF <br /> fc. rtLc c �-'t, .,.c°c_c 0 HOLES ALONG THE PIPE BOTTOM . PIPE <br /> L 2" DEPTH OF MUST HAVE A BEARING STRENGTH OF <br /> o ROCK ABOVE AT LEAST 1000 LB/FT. <br /> ` c• o j PIPE <br /> ROCK a AT LEAST 6" OF 4. SCARIFY TRENCH BOTTOM AND SIDEWALLS <br /> .14-- . ' c t ROCK BELOW AS HIGH AS ROCK WILL BE PLACED IN THE <br /> PIPE. SEE TRENCH IN ORDER TO EXPOSE NATURAL SOIL. <br /> NOTE 5. REMOVE LOOSE SOIL BEFORE PLACING ROCK. <br /> 1-4 18" TO 36" -- <br /> 5. WHERE TREES ARE PRESENT OR LIKELY TO BE <br /> PRESENT DURING THE LIFE OF THE SYSTEM, <br /> 12 INCHES OF ROCK MUST BE PLACED UNDER <br /> THE DISTRIBUTION PIPE. <br /> TRENCH CONSTRUCTION DETAILS <br />