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Oregon DEQ Approved Product Descriptions EZflow is approved in Oregon by the DEQ and the ing for standard 2 foot wide gravel Uniform Building Code Division. trenc xam , ' he sizing for a o foot gravel trench re ' es 100 DEQ approvals include: inear feet of trench, the 1201 s- • Standard disposal trenches tern will be sized at 100 linear feet. `'--�. • Capping fill systems 1201 P GEO • Sandfilter gravel-less absorption trenches . • Seepage trenches V°°V V °°°°° • Steep slope systems • V V V V • V 0 0 0 • Curtain drains t o°,7•11 'i. •v v • Tile dewatering systems 12' °° '=frr�-.� • v° v c�=u=7i-� v v • Pressure distribution systems °°v'i n i i��ir' v° - ° vo v vv . VVVV7VVVvv • vv VVVVVVVVVVVVVV Building Code approvals include: °° • °°°°°°°°°° 97 • Foundation drains ----12•-2�-► i • Roof drain systems Figure 1. 1. Standard Disposal Trench . The 1202H Evaluation: A. The 1201 P/1201 P-GEO Evaluation: The 1202H drainfield system (tw 4-2 inch a. The 1201 P drainfield system consists iameter cylinders)may be d in a hori- of one, 12-inch diameter cylinder zo al configuration " in a 24 inch wide across the bottom of a trench 12 to disposa . The cylinders shall be 24 inches wide. The 1201 P cylinder placed side-by-side and in contact with contains aggregate and a four-inch each other. Serial distribution methods diameter perforated flexible plastic limit the maximum effluent depth to no pipe as is typically used in septic sys- more than 6 inches higher than the invert tern drainlines. The pipe shall be cer- level of the perforated piping within the tified as complying with ASTM F 405 higher trenches. The minimum backfill Heavy. Duty. The netting for central depth is 6 inches when equal distribution cylinder is tied off at both ends of the methods are used, and 12 inches with pipe. The pipe may be connected by serial distribution methods. The EZflow an internal coupling device to allow brand 1202H will be sized at the same continuous flow from one section to required linear foot sizing for standard the next. 2 foot wide gravel trench. For example, if the sizing for a two foot gravel trench b. The difference between 1201 P and requires 100 linear feet of trench, the 1201 P-GEO is the GEO filter fabric. 1202H system will be sized at 100 linear The top of the cylinder contains a feet. The cylinder with pipe may be in- filter fabric pre-manufactured in be- stalled on either side within the trench. tween the netting and aggregate. The fabric is inserted to prevent soil intrusion. The installer shall make sure the fabric is on top before final 1202H Horizontal System backfilling_ c. Site, soil and design requirements of 177VVV °°°°° • vvvv • • vvvv • the 1201P system shall be the same -- ' 00770 as required for the standard stone -r '' 'ar'' °° -ff•if-�FaierfiL. v v filled disposal system (containing 1i; :13.1 �rmO'`Rir„Jo o drain media 12 inches deep) as de- v ,u-"�,� ° VO V V. V V V V V V V V V •V V scribed in OAR Chapter 340, Divi- °° • °°°°°°°°°° °° sions 71 & 73. ~— —1. Figure 2. d.The EZflow brand 1201 P will be sized at the same required linear foot siz- 3