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Oregon <br /> DEQ Approved Product Descriptions <br /> EZ,jlow is approved in Oregon by the DEQ and the ing for standard 2 foot wide gravel <br /> Uniform Building Code Division. trench. For example, if the sizing for <br /> a two foot gravel trench requires 100 <br /> DEQ approvals include: linear feet of trench, the 1201 P sys- <br /> • Standard disposal trenches tern will be sized at 100 linear feet. <br /> • Capping fill systems 1201 P GEO <br /> • Sandfilter gravel-less absorption trenches <br /> • Seepage trenches vvvvv vvvvv <br /> • Steep slope systems •vvvv • vvvv • <br /> VO vv <br /> • Curtain drains vv .! � v v <br /> v v 1II• v o <br /> • Tile dewatering systems 12 °o v arta n IR •vv. <br /> • Pressure distribution systems vv.15 vv <br /> V° °°V°°°°°V V• V V <br /> Building Code approvals include: vv v v v v v v°°v v <br /> • Foundation drains 12'--za=-► <br /> • Roof drain systems Figure 1. <br /> 1. Standard Disposal Trench B. The 1202H Evaluation: <br /> A. The 1201P/1201P-GEO Evaluation: The 1202H drainfield system(two, 12 inch <br /> a. The 1201P drainfield system consists diameter cylinders)maybe used in a hori- <br /> of one, 12-inch diameter cylinder zontal configuration within a 24 inch wide <br /> across the bottom of a trench 12 to disposal trench. The cylinders shall be <br /> 24 inches wide. The 1201P cylinder placed side-by-side and in contact with <br /> contains aggregate and a four-inch each other. Serial distribution methods <br /> diameter perforated flexible plastic limit the maximum effluent depth to no <br /> pipe as is typically used in septic sys- more than 6 inches higher than the invert <br /> tern drainlines. The pipe shall be cer- level of the perforated piping within the <br /> tified as complying with ASTM F 405 higher trenches. The minimum backfill <br /> Heavy Duty. The netting for central depth is 6 inches when equal distribution <br /> cylinder is tied off at both ends of the methods are used, and 12 inches with <br /> pipe. The pipe may be connected by serial distribution methods. The EZflow <br /> an internal coupling device to allow brand 1202H will be sized at the same <br /> continuous flow from one section to required linear foot sizing for standard <br /> the next. 2 foot wide gravel trench. For example, <br /> if the sizing for a two foot gravel trench <br /> b. The difference between 1201P and requires 100 linear feet of trench, the <br /> 1201P-GEO is the GEO filter fabric. 1202H system will be sized at 100 linear <br /> The top of the cylinder contains a feet. The cylinder with pipe may be in- <br /> filter fabric pre-manufactured in be- stalled on either side within the trench. <br /> tween the netting and aggregate. <br /> The fabric is inserted to prevent soil <br /> intrusion. The installer shall make <br /> sure the fabric is on top before final 1202H Horizontal System <br /> backfilling. <br /> c. Site, soil and design requirements of vvvvv VVVVV <br /> •vvvv• •vvvv • <br /> the 1201P system shall be the same v v° ° <br /> 4, •v <br /> J=^ L dJ L=J-,L <br /> as required for the standard stone o •��I � ITip���E,v <br /> v v l 1f=11.�a-�I=1I=.7f�11-i v v <br /> filled disposal system (containing 1 °•°.. s�=�u -u-u lr. v v <br /> drain media 12 inches deep) as de- VV °o 0 o v°v • •v VO <br /> vv-VVVVVVVVV• vv <br /> scribed in OAR Chapter 340, Divi- V V • vvvvv°vvvv Vv <br /> sions 71 & 73. f— 24-4. <br /> Figure 2. <br /> d.The EZflow brand 1201P will be sized <br /> at the same required linear foot siz- <br /> 3 <br />