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Oregon
Under Oregon Administrative Rule (OAR) 340-071-0117, (2005
Revised OAR 340-071-0135), Inltrator Water Technologies
has received approval from the Oregon Department
ronmental Quality (DEQ) to install the EZow 1201P conguration in the State of Oregon. The DEQ has also approved various EZow products for use in Standard Disposal Trenches,
Capping Fill Systems, Sand Filter Systems, Seepage Trench
Systems, Steep Slope Systems, Curtain Drains, Tile Dewatering Systems, and Pressurized Distribution Systems.
Materials & Equipment Needed
• EZflow Bundles
• EZflow barrier Paper or DEQ approved geotextile on
non-GEO products only
• EZflow Internal Pipe Couplers
• Pipe for Header and Inlet
• Backhoe
• Laser, Transiton
of Envi-
August 2018
Installation Instructions
for EZflow Systems
in Oregon
Installation Instructions
The instructions for installation of EZow products are given
below. EZow products must be installed in accordance with
OAR Chapter 340, Divisions 071 & 073, as well as the DEQ
or local unit of government with jurisdiction.
1. After the DEQ or local unit of government with jurisdiction
has determined sizing, conguration, and layout for the
EZow system, stake or mark with paint the location of
trenches and lines. Set tank, invert pipe, header line or
distribution box and trench bottom elevations before
installation of pipe bundles.
2. The proper elevation of solid PVC euent pipe going to
each trench should be determined to ensure compliance with
the required maximum trench bottom depth as shown on the
approved permit. This trench depth may vary depending on
system height and conguration used.
3. Remove plastic EZow shipping bags prior to placing
bundles in the trench(es). Remove any plastic bags in the
trench before system is covered.
4. The top of each 1201P-GEO and 1202H-GEO bundle
contains a geotextile pre-inserted between the netting and
aggregate. The geotextile is present to prevent soil intrusion
and shall be placed facing upward. If using the 1202H-GEO,
the bundles shall be placed with the geotextile on top and in
contact with the geotextile contained in the adjacent bundle
before backlling.
6. Place EZow bundle(s) in the EZow conguration
per permit. The top or center-most bundles containing pipe
are joined end to end with an internal pipe coupler. Any
additional aggregate only bundles, should be butted against
the other aggregate-only bundles and do not require any
type of connection.
7. Header or lead lines from the distribution/drop box or
device will be connected to top or center-most pipe bundle
in each trench or inserted into pipe.
8. The EZow draineld systems should be installed in a
level trench in all directions (both across and along the
trench bottom) and should follow the contour of the ground
surface elevation (uniform depth), with all continuous,
adjoining 10-foot bundles placed end to end, with central
bundle distribution pipe connected.
9. EZow bundles are exible and can t in curved trenches
as may be necessary to avoid trees, boulders, or other
obstacles.
10. Final contours and landscaping should be done in a
manner to promote surface water runo.
Repeat steps 1 thru 10 for each required trench.
As required by state or local regulations, be sure to obtain
proper installation inspection from the DEQ or local unit of
government with jurisdiction prior to covering the system.
5. For EZow products not containing GEO, only the top of
the upper bundle should be covered with 60 lb. untreated
building paper available from EZow. Other material such as
DEQ approved geotextile may be used. A geotextile cover is
necessary in sandy soils.
Contact Infiltrator Systems’ Technical Services Department for assistance at 1-800-221-4436
Contact Infiltrator Water Technologies’ Technical Services Department for assistance at 1-800-221-4436
After the system has been completely covered, vehicular
trac across or along the trenches shall be avoided.
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Approved EZow Products
As required by DEQ or local unit of government with
jurisdiction, sod or seed the draineld area to control
erosion, as may be required by permit or local policy.
EZow is approved in Oregon by the DEQ and the Uniform
Building Code Division.
DEQ approvals include:
• Standard disposal trenches
• Capping ll systems
• Sandlter gravel-less absorption trenches
• Seepage trenches
• Steep slope systems
• Curtain drains
• Tile dewatering systems
• Pressure distribution systems
Building Code approvals include:
• Foundation drains
• Roof drain systems
Standard Disposal Trenches
The 1201P/1201P-GEO
A. The 1201P draineld system consists of one, 12-inch diameter bundle across the bottom of a trench 12-to-24 inches
wide. The 1201P bundle contains aggregate and a four-inch
diameter perforated exible plastic pipe as is typically used in
septic system drainlines. The pipe shall be certied as complying with ASTM F-667. The netting for the central bundle is
tied o at both ends of the pipe. The pipe may be connected
by an internal coupling device to allow continuous ow from
one section to the next.
B. The dierence between 1201P and 1201P-GEO is the
GEO lter fabric. The top of the bundle contains a lter fabric
pre-manufactured in between the netting and aggreate. The
fabric is inserted to prevent soil instrusion. The installer shall
make sure the fabric is on top before nal backlling.
C. Site, soil and design requirements of the 1201P system
shall be the same as required for the standard stone lled
disposal system (containing drain media 12-inches deep) as
described in OAR Chapter 340, Divisions 71 & 73.
1201P-GEO
NATIVE BACKFILL
6" MIN. COVER
OR PER CODE
12"
ESTABLISH
VEGETATIVE COVER
12" - 24"
TRENCH
WIDTH
Figure 1
FILTER FABRIC
4" PERFORATED PIPE
12" EZflow
BUNDLE (TYP.)
D. EZow 1201P will be sized at the same required linear foot
sizing for standard 2-foot wide gravel trench. For example, if
the sizing for a 2-foot gravel trench requires 100-linear feet
of trench, the 1201P system will be sized at 100-linear feet.
The 1202H/1202H-GEO
The 1202H draineld system (two, 12-inch diameter
bundles) may be used in a horizontal conguration within
a 24-inch wide disposal trench. The bundles shall be
placed side-by-side and in contact with each other. Serial
distribution methods limit the maximum euent depth to
no more than 6-inches higher than the invert level of the
perforated piping within the higher trenches. The minimum
backll depth is 6-inches when equal distribution methods
are used, and 12-inches with serial distribution methods.
The brand 1202H will be sized at the same required linear
foot sizing for standard 2-foot wide gravel trench. For
example, if the sizing for a 2-foot gravel trench requires
100-linear feet of trench, the 1202H system will be sized at
100-linear feet. The bundle with pipe may be installed on
either side within the trench.
1202H-GEO
NATIVE BACKFILL
6" MIN. COVER
OR PER CODE
12"
24" MIN.
TRENCH
WIDTH
Figure 2
ESTABLISH
VEGETATIVE COVER
4" PERFORATED PIPE
12" EZflow
BUNDLE (TYP.)
The 1003T
The 1003T product (three, 10-inch diameter bundles) may be
used in either a triangular or horizontal conguration at all locations where a gravity-fed disposal trench (containing drain
media 12-inches deep) would otherwise be allowed. The
bundles shall be placed in a triangular conguration when installed within a 24-inch wide trench. One bundle shall contain
pipeing and be centered and in contact with the other two
bundles. When used in a horizontal conguration, the bundles must be placed side-by-side and in contact with each
other, within a trench at least 30-inches wide. The center
bundle shall contain piping. Serial distribution methods limit
the maximum euent depth to no more than 6-inches higher
than the invert level of the perforated piping within the higher
trenches. The minimum backll depth is 6-inches when equal
distribution methods are used, and 12-inches with serial distribution methods. EZow 1003T will be sized at the same
required linear foot sizing for standard 2-foot wide gravel
Contact Infiltrator Water Technologies’ Technical Services Department for assistance at 1-800-221-4436
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Figure 5
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1003T-GEO
NATIVE BACKFILL
6" MIN. COVER
OR PER CODE
24" MIN.
TRENCH
WIDTH
15"
Figure 3
ESTABLISH
VEGETATIVE
COVER
4" PERFORATED
PIPE
FILTER FABRIC
10" EZflow
BUNDLE (TYP.)
trench. For example, if the sizing for a 2-foot gravel trench
requires 100-linear feet of trench, the 1003T system will be
sized at 100-linear feet.
The Capping Fill System
The 1201P/1201P-GEO
The 1201P-GEO draineld system consists of one, 12-inch
diameter bundle installed in a 12-inch wide trench. See gure
1 for example conguration.
The 1202H
The 1202H draineld system may also be installed in a horizontal conguration in a capping ll system, within a 24-inch
wide trench that is a minimum of 12-inches deep. See gure
2 for example conguration.
The 1003T
The 1003T draineld system may also be installed in a capping ll system. The 1003T in the horizontal conguration is
installed in a 30-inch wide trench that is a minimum of 12inches deep. The 1003T triangular conguration is installed in
a 24-inch wide trench that is a minimum of 17- inches deep,
with the cap placed in accordance with the requirements of
OAR Chapter 340 Division 71. See Figure 3 for example conguration.
Conventional Sand Filter System Using Gravelless
Absorption Trenches – The 1001P/1001P-GEO
The 1001P/1001P-GEO draineld system (10-inch diameter
bundles containing 4-inch diameter perforated polyethylene
piping, placed end to end within the trench) may be used fol-
1001P-GEO
NATIVE
BACKFILL
4" MIN.
CAPPING FILL
10"
10" MIN.
TRENCH
WIDTH
Figure 4
ESTABLISH
VEGETATIVE
COVER
FILTER FABRIC
4" PERFORATED PIPE
10" EZflow
BUNDLE (TYP.)
lowing a sand lter in lieu of the chamber described in OAR
Chapter 340 Division 71. Construction shall conform to all
requirements described within Chapter 340 Division 71 with
the following modications:
a. The perforated pressure piping shall be placed
within the 4-inch diameter perforated polyethylene
piping with orices at the 12 o’clock position.
b. Because the top of the bundle will be at the
natural ground surface, a capping ll shall be used
to cover the installation. Soil texture from the surface
to the trench bottom shall not be ner than silty clay
loam.
See the Oregon Chamber Design and Installation Manual for additional options and information.
Seepage Trench System
1004S/1004S-GEO, 1204S/1204S-GEO
Both the I0-inch and 12-inch diameter bundles may be installed in seepage trenches in lieu of drain media. Four or
more bundles can be placed in a 24-inch wide trench. At least
one of the top bundles shall contain perforated piping. Serial
distribution methods limit the maximum euent depth to no
more than 6-inches higher than the invert level of the perforated piping within the higher trenches. The minimum backll
depth is 6-inches when equal distribution methods are used,
and 12-inches with serial distribution methods. See Figure 5
for example conguration.
1204S-GEO
ESTABLISH
VEGETATIVE COVER
NATIVE BACKFILL 6" MIN.
COVER OR PER CODE
24"
24" MIN.
TRENCH
WIDTH
FILTER FABRIC
4" PERFORATED PIPE
12" EZflow
BUNDLE (TYP.)
Steep Slope Systems
I00IA/100IA-GEO, 1001P/1001P-GEO
1201A/1201A-GEO, 1201P/1201P-GEO
Both the 10-inch and 12-inch diameter bundles may be
used within seepage trenches in a steep slope system in
lieu of drain media. Four bundles can be placed in a 24-inch
wide trench. At least one of the top bundles shall contain
the perforated piping. Serial distribution methods limit the
maximum euent depth to no more than 6 inches higher
than the invert level of the perforated piping with the higher
trenches. GEO product can only be used at the top of the
conguration. See Figure 5 for example conguration.
Contact Infiltrator Systems’ Technical Services Department for assistance at 1-800-221-4436
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Page 4
Curtain Drains I00IA/1001A-GEO, 1001P/1001P-GEO,
1201A/1201A-GEO, 1201P/1201P-GEO
The 10-inch or 12-inch diameter bundles can be used in a
12-inch minimum width trench in lieu of pipe and drain media
in curtain drains. Pipe-containing bundles shall be on the bottom, and additional bundles may be stacked so as to provide
the equivalent media depth required. GEO product can only
be used at the top of the conguration. See Figure 6 for example conguration.
Tile Dewatering Systems
NATIVE BACKFILL
6" MIN. COVER
OR PER CODE
ESTABLISH
VEGETATIVE COVER
FILTER FABRIC
10" or 12" EZflow
BUNDLE (TYP.)
4" PERFORATED
PIPE
Non-DEQ Regulated Systems Other Applications
1. Roof Run-o Drain Systems:
The 10-inch or 12-inch diameter bundles can be used.
EZow Roof Drain Systems
EZflow DRAINAGE BUNDLES WITH
PIPESLOPE AT 1% MINIMUM AND
PROVIDE 6 INCHES MINIMUM COVER
ARRANGE AGGREGATE
ONLY BUNDLES BELOW
MAIN BUNDLE TO THE
SEASONAL HIGH
GROUNDWATER LEVEL FOR
MAXIMUM GROUNDWATER
RECHARGE - BUNDLE
CONFIGURATIONS
MAY VAR Y
SEASONAL HIGH GROUNDWATER LEVEL
(RECOMMENDED)
GUTTER
DOWNSPOUT
CATCH BASIN
ROOF
E-Z DRAIN
CB WITH
SOLID LID
12" MIN.
TRENCH
Figure 6
WIDTH
The 10-inch or 12-inch diameter bundles can be used in a
12-inch minimum width trench in lieu of pipe and drain media within eld collection drainage tile trenches. If there is a
concern that the volume of groundwater to be collected and
drained exceeds the carrying capacity of the 4-inch diameter
corrugated pipe in the bottom cylinder, then two stacks bundles (containing piping in both of the base bundles) may be
placed, provided the trench is not less than 20-inches wide.
See Figure 6 for example conguration.
Pressurized Distribution
Disposal systems using 10-inch or 12-inch diameter bundles
in lieu of drain media can utilize pressurized distribution. The
perforated pressure piping shall be placed within the 4-inch
diameter pipe with orices at the 12 o’clock position. Orice
shields shall not be required.
2. Foundation Drain Systems:
The 10-inch or 12-inch diameter bundles can be used.
Foundation Drain Detail
FINISHED GRADE
EXTERIOR
AGGREGATE-ONLY
BUNDLES TO WITHIN
18 IN. OF FINISHED
GRADE (TYPICAL)
LOCATE EZFLOW BUNDLE
WITH PIPE AT FOOTING TOE OR,
AT A MINIMUM, BELOW ELEVATION
OF INTERIOR FINISHED GRADE
OF BASEMENT/ CRAWLSPACE
AND SLOPE TO DISCHARGE PONT
FOUNDATION
WALL
INTERIOR
(SEE BASEMENT/CRAWL
SPACE DRAIN DETAIL)
FINISHED
GRADE
INTERIOR
FOOTING
Contact Infiltrator Systems’ Technical Services Department for assistance at 1-800-221-4436
Page 5
INFILTRATOR WATER TECHNOLOGIES, LLC. STANDARD LIMITED WARRANTY
(a) The structural integrity of each EZow by Inltrator
expanded polystyrene draineld system and other accessories manufactured by EZow by Inltrator (“Units”), when
installed and operated in a leacheld of an onsite septic
system in accordance with Inltrator’s instructions, is warranted to the original purchaser (“Holder”) against defective
materials and workmanship for one year from the date that
the septic permit is issued for the septic system containing
the Units; provided, however, that if a septic permit is not required by applicable law, the warranty period will begin upon
the date that installation of the septic system commences.
To exercise its warranty rights, Holder must notify Inltrator
in writing at its Corporate Headquarters in Old Saybrook,
Connecticut within fteen (15) days of the alleged defect.
Inltrator will supply replacement Units for Units determined
by EZow by Inltrator to be covered by this Limited Warranty. EZow by Inltrator’s liability specically excludes the
cost of removal and/or installation of the Units.
(b)THE LIMITED WARRANTY AND REMEDIES IN SUBPARAGRAPH (a) ARE EXCLUSIVE. THERE ARE NO OTHER
WARRANTIES WITH RESPECT TO THE UNITS, INCLUDING
NO IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
(c) This Limited Warranty shall be void if any part of the EZow system is manufactured by anyone other than EZow
by Inltrator. The Limited Warranty does not extend to incidental, consequential, special or indirect damages. Inltrator shall not be liable for penalties or liquidated damages,
including loss of production and prots, labor and materials,
overhead costs, or other losses or expenses incurred by the
Holder or any third party. Specically excluded from Limited
Warranty coverage are damage to the Units due to ordinary
wear and tear, alteration, accident, misuse, abuse or neglect
of the Units; the Units being subjected to vehicle trac or
other conditions which are not permitted by the installation
instructions; failure to maintain the minimum ground covers set forth in the installation instructions; the placement
of improper materials into the system containing the Units;
failure of the Units or the septic system due to improper
siting or improper sizing, excessive water usage, improper
grease disposal, or improper operation; or any other event
not caused by Inltrator. This Limited Warranty shall be void
if the Holder fails to comply with all of the terms set forth in
this Limited Warranty.
Further, in no event shall Inltrator be responsible for any
loss or damage to the Holder, the Units, or any third party
resulting from installation or shipment, or from any product
liability claims of Holder or any third party. For this Limited
Warranty to apply, the Units must be installed in accordance
with all site conditions required by state and local codes; all
other applicable laws; and Inltrator’s installation instructions.
(d) No representative of Inltrator has the authority to
change or extend this Limited Warranty. No warranty applies
to any party other than the original Holder.
The above represents the Standard Limited Warranty oered
by Inltrator. A limited number of states and counties have
dierent warranty requirements. Any purchaser of Units
should contact Inltrator’s Corporate Headquarters in Old
Saybrook, Connecticut, prior to such purchase, to obtain a
copy of the applicable warranty, and should carefully read
that warranty prior to the purchase of Units.
4 Business Park Road P.O. Box 768
Old Saybrook, CT 06475
860-577-7000 • Fax 860-577-7001
1-800-221-4436
www.infiltratorwater.com • info @infiltratorwater.com
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Equali zer, Quick4, an d SideWinder are reg istere d trademarks of Infil trator Wate r Technologies. Infi ltrator i s a registered trade mark in Fra nce. Infil trator Wate r Technologies is a registered tr ademar k
in Mexico. Contour, Micr oLeach ing, PolyTuff, Cham berSp acer, Multi Port, Pos iLock, Q uickCut, QuickPlay, SnapLoc k and Strai ghtLoc k are trade marks of Inf iltrato r Water Technolo gies. Pol yLok is a
trade mark of Pol yLok, In c. TUF-TITE is a r egiste red trad emark of TUF-TITE, IN C. Ultra- Rib is a trademar k of IPEX In c.
© 2018 Infiltra tor Water Techno logies , LLC. All righ ts reser ved. Prin ted in U.S.A .
Contact Infiltrator Water Technologies’ Technical Services Department for assistance at 1-800-221-4436
EZ38 0818
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