HomeMy WebLinkAboutUpdated Permit Info - 11.16.23Edward R. "Ted" White, P.E.
Environmental Health Specialist III
Garfield County Public Health
2014 Blake Ave. Glenwood Springs, 81601
RE: Updated Adams Permit Details
Ted,
Attached is our updated permit package to address the concerns raised by the county. Changes that have
been made are:
- Removal of the camper section from the permit. It is now just the ADU (2 bedroom / 4 total
people)
- Additional details on Cindy Adams experience.
- More detailed calculations information.
- Addition of parts list and manufacture specifications sheets for all materials.
- Additional maps of the area and details of the design.
We are asking that we may have until May 2024 to complete the construction. Our aim is to complete it
as soon as practically possible but based on lead times of materials (6-8 weeks) and permitting timelines
we would not be able to start until January / February 2024. The location of the project has a very
limited easement across the neighbor's property. The easement is limited to 15' with 6' privacy fences
along the edges. Snow accumulations make getting medium sided trailers impractical through the
roadway until snow melts.
Our intention is to work with a contractor to complete the work. We have had preliminary conversations
with Doolen Construction, a general contractor that has constructed many septic systems including the
one for the primary residence on this property. His availability is also a factor in timing on when we can
complete construction.
We would like guidance from the county on the requirements for the removal of the legacy septic
system. Our intent is to install the new system and cut over then remove the legacy system afterwards.
Thank you for all you help,
Daniel Adams
Sparky1869(ayahoo.com / 970-987-0118
Updated Permit Applications and Soil
Report for Proposed Adams ADU
OTWS Replacement
November 15, 2023
Adams ADU Septic Permit
Contents
PropertyInformation: ..................................................................................................................
1
Preliminary Investigation.............................................................................................................2
LegalDescription....................................................................................................................2
ExistingStructures......................................................................................................................2
Locations of Existing Wells on Subject Property......................................................................3
Topography.............................................................................................................................
3
Soildata..................................................................................................................................5
Preliminary Soil Treatment Area (STA) estimate.....................................................................5
Location of applicable setbacks...............................................................................................5
Reconnaissance: ........................................................................................................................
8
Landscapeposition.................................................................................................................
8
Topography.............................................................................................................................
8
Vegetation Natural and cultural features.................................................................................
8
Current and historic land use..................................................................................................
8
DetailedSoil Investigation: ..........................................................................................................
8
DesignSpecifications...............................................................................................................13
DesignCalculations..............................................................................................................13
ComponentSpecifications.....................................................................................................14
Table 1. NRCS Soil Map Unit Descriptions................................................................................5
Table 2. Actual Setback Distances............................................................................................6
Figure 1. Parcel map from Garfield County Assessor's Office....................................................2
Figure 2. Layout of structures on subject parcel from the Garfield County Assessor and image
from Google Earth of the same area...........................................................................................3
Figure 3. Detailed Map of Project Area......................................................................................4
Figure4. Map of Project Area....................................................................................................7
Figure 5. Soil Pit 2 Graphical Soil Profile.................................................................................12
Adams ADU Septic Permit
Property Information:
Name of Owner: Daniel and Cindy Adams
Property Address and Parcel Number: 3903 CR 241, New Castle, CO 81647
Telephone Number: 970-987-0118
Email: sparky1869(ayahoo.com
Credentials and Qualifications of Individual Conducting Site and Soil Evaluation
Cindy Adams, Senior Environmental Scientist for an environmental consulting company in Rifle,
Colorado. She has a Bachelors of Science in Environmental Science and an MBA from the
University of Denver. Cindy has performed topsoil evaluations for oil and gas companies which
include digging soil test pits and describing the soil profile utilizing Munsell color chart, texture,
soil horizon, soil density, and soil structure (grade and shape). She is proficient at hand
texturing and observation, identifying soil structure, and limiting layers. Cindy has a wide
breadth of skills and experience in environmental permitting, environmental assessments,
reclamation planning and monitoring, pre -disturbance assessments, topsoil evaluations, soil pit
profile evaluations, wetland delineation, aquatic resource inventories, noxious weed mapping,
grant writing, Phase 1 environmental site assessments, and threatened/endangered plant and
habitat surveys.
Adams ADU Septic Permit
Preliminary Investigation
Legal Description
The subject property is parcel # 21230610019.
Property Map from Garfield Land Explorer
Figure 1. Parcel map from Garfield County Assessor's Office.
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Existing Structures
The property has two houses- 3907 CR 241 and 3903 CR 241. The ADU is the 3903 CR 241
address and is the house that needs the updated septic system. ADU property is listed as the
second building constructed in 1920, with 2 bedrooms and one bathroom. Living space of 784
SF and 912 SF of non -livable basement space (1696 total heated SF). Figure 2 shows the
layout of the structures on the subject property.
Adams ADU Septic Permit 2
Figure 2. Layout of structures on subject parcel from the Garfield County Assessor and image from Google Earth of
the same area.
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Resl s2
Chto en Coop
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Gore
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Locations of Existing Wells on Subject Property
The location of the well is behind the 3903 CR 241 house. Figure 4 shows the location of the
water well, proposed leach field for 3903 CR 241 house. The water well is approximately 190
feet east of the proposed leach field.
Topography
Based on Lidar Imagery (2016) found at Colorado Water Conservation Board Colorado Hazard
Mapping(https://coloradohazardmappingcom/Lidarpownloadcom/Lidarpownload), we converted the DEM to two
foot contours using a Contours tool in ArcGIS Pro. The well is located at 6322 feet, the house
and septic tank at about 6320 feet and the leach field between 6306 and 6300 feet with the
majority of the field between 6304 and 6302 foot contours. East Elk Creek is at an elevation of
6290-6282. There is a bench between the field with the proposed leach field and East Elk
Creek. The proposed leach field is approximately 100 feet east from the top of the bench and
approximately 200 feet east of the creek. Figure 3 shows a detailed map of the proposed septic
system components.
Adams ADU Septic Permit
Figure 3. Detailed Map of Project Area
Adams ADU Septic Permit 4
Soil data
NRCS soil map units were reviewed from the area. The proposed septic tank, septic line,
effluent line, diverter box, and a portion of the leach field is found on Kim loam, 6-12% slopes.
The majority of the proposed leach field is found on Torrifluvents, nearly level (65) soil map unit.
The typical soil profile is loam to 36 inches and sand from 36-60 inches. Table 1 shows details
of each soil map unit found within the project area.
Table 1. NRCS Soil Map Unit Descriptions
41—Kim loam, 6 to 12 percent
65- Torrifluvents, nearly level
slopes
Wann (10% of 65 on terraces)
Landform
Benches, alluvial fans
Distributaries, rivers, flood plains
Warm- terraces
Parent material
Alluvium derived from sandstone
Alluvium
and shale
Typical profile (A)
Hl - 0 to 17 inches: loam
H1 - 0 to 36 inches: loam
H
2 - 36 to 60 inches: sand
H2 - 17 to 60 inches: loam
Slope (dominant)
6 to 12 percent
0 to 6 percent
Depth to restrictive
More than 80 inches
More than 80 inches
feature
Depth to water table
More than 80 inches
About 12 to 36 inches
Ecological site
Upland Loam (Wyoming Big
Not Iisted
Sagebrush
Preliminary Soil Treatment Area (STA) estimate
The preliminary soil treatment area (STA) or leach field is approximately 824 sq ft. There will be
no traffic or staging of material over the future STA site to avoid compaction of soils prior to
construction of the STA. The STA area has been previously used for haying. Based on the soil
test pits, the soil type for the treatment area is 2A and 3. Soil type 3 was utilized to design the
OWTS. Underlying soils (calcareous silt loam) are classified as Soil Type 2 and silty clay loam
soils classified as Soil Type 3.
Location of applicable setbacks
Table 2 shows the actual distances between several features and the proposed septic tank,
effluent lines/sewer line, and leach field. All these features are within the appropriate setback
distances as defined by Table 7-1 Regulation 43. Figure 4 shows an overview of the proposed
project in relation to the setback distances in Table 2.
Adams ADU Septic Permit
Table 2. Actual Setback Distances
Septic Tank
Building Sewer /
Effluent Lines
Leach Field
Well
70'
62' / 80'
190'
Potable Water Line
48'
55'
160'
ADU
10'
0'
130'
Primary Dwelling
130'
90'
145'
Property Lines
268'
260'
130'
East Elk Creek
(Stream)
350'
350'
210'
Irrigation Ditch
190'
180'
130'
Dry Gulch
350'
360'
160'
Cut Bank to creek
220'
210'
100'
Slope to Field
38'
58'
43'
Adams ADU Septic Permit 6
Figure 4. Map of Project Area
Adams ADU Septic Permit 7
Reconnaissance:
Landscape position
The proposed septic tank is on the top of a bench adjacent to the ADU. The proposed leach
field is at the toe slope of a cut bank in a lower agricultural hay field.
Topography
The hayfield is relatively flat with a low slope draining to the south/southeast. There is an
approximately 20' tall bench to the west of the proposed leach field.
Vegetation Natural and cultural features
There are no cultural features present in the project area. The septic tank will be installed in a
residential lawn composed of bluegrass and field grasses such as orchard grass. The leach
field is in an agricultural hayfield that is sprinkler irrigated. The hayfield is composed of
perennial grasses- orchard grass, timothy, smooth brome.
Current and historic land use
The current land use is a hayfield. The historic land use is cattle grazing.
Detailed Soil Investigation:
Two soil test pits were dug in the area of the proposed leach field. Soil pits were sampled to the
north and south of the proposed leach field but within the same elevation area and topographic
feature. A visual and tactile soil analysis was completed by Cindy Adams, Senior
Environmental Scientist, at the time of excavation. The soil test pits were dug with a backhoe on
our tractor to a depth of about eight feet. The soil test pits were dug at different times- soil test
pit 2 on November 9, 2023 and soil test pit 1 on December 5, 2021. Both sampling events
occurred with no snow on the ground and the soil was not yet frozen. The soil color was
determined utilizing the Munsell Soil Color Book and soil color was colored when the soil was
wetted at Sample Location 2 and when the soil was dry at Sample Location 1. No bedrock or
groundwater were encountered in either test pit.
Sample Location 1 is at 39 38 39.02340 N, 107 31 56.87074 W. Table 3 shows the soil profile
of the Sample Pit Location 1 and Table 5 shows a photographs of the soil test pit profile.
Sample Location 2 is at: 39038'38.42"N, 107°31'57.74"W. Table 4 and Figure 5 shows the soil
profile of the Sample Pit Location 2.
Adams ADU Septic Permit 8
Table 3. Sample Pit Location 1 Soil Profile
Depth
(inches)
Soil Color
Texture
Soil Structure
(Shape)
Soil
Structure
(Grade)
Soil
Type
0-4
10YR 2/2
Loam
Granular
1 (weak)
2A
4-24
10YR 2/2
Clay Loam
Blocky angular
2 (moderate)
3
24-60
10YR 3/3
Clay Loam and
Gravel
Blocky angular
2 (moderate)
3
60-80
10YR 4/3
Silty Clay Loam
Blocky angular
2 (moderate)
3
80-101
10YR 5/4
Clay
Blocky angular
3 (strong)
4
r-1 0 1 +
10YR 4/4
Sandy Clay Loam
Blocky angular
2 (moderate)
3
Table 4. Sample Pit Location 2 Soil Profile
Depth
Soil Color
Texture
Soil
Soil
Soil
(inches)
Structure
Structure
Type
(Shape)
(Grade)
0-18
10YR 4/3
Silty Clay Loam, no
Blocky
2 (moderate)
3
rocks/gravel present
angular
18-32
10YR 4/3
Clay Loam, 10% rocks 1-
Blocky
2 (moderate)
3
2" in size
angular
32-53
10YR 6/3
Loam, 75% rocks, 1-5" in
Granular
1 (weak)
2A
size with some large rocks
12-18" in size
53-76
1 OYR 4/3
Loam with 50% rocks
Blocky
2 (moderate)
3
angular
76-87
10YR 4/3
Silt Loam with CaCO3 in
Blocky
2 (moderate)
2
root channels (50%). Soil
angular
is moist but not saturated
87-96
10YR 3/2
Silt Loam
Blocky
2 (moderate)
2
with 3%
angular
occurrence
mottles in
pore linings
10YR 5/6
Adams ADU Septic Permit
Graphic Log of Soil Test Pit 1:
tv
Top 2' Top of Profile
000-1,4 ",141
Y `4
• > P +( rim
_ p
L=
�F
Middle of Profile Bottom of Profile
Adams ADU Septic Permit 10
Bottom of the hole, no water
Adams ADU Septic Permit 11
Figure 5. Soil Pit 2 Graphical Soil Profile
Adams ADU Septic Permit 12
Design Specifications
Design Calculations
ADU = 75 GPD x 2 people/bedroom x 2 Bedroom = 300 GPD
Average Design Flow = 300 GPD
LTAR = 0.35 GPD/SF
300 GPD / 0.35 GPD/SF x 1.0 (gravity trenches) x 0.7 (chambers) = 600 SF
The OWTS design is based on 2-bedrooms in the in the ADU. An average daily wastewater flow of
300 GPD will be used.
The elevation of the ADU is approximately 6320' with the septic tank being placed with the top
approximately 3' below grade and 10' from the ADU. Distance from the septic tank to distribution box
is 110' with the elevation drop of 20 feet. The elevation drop is more than the required 20 inches
required to maintain a minimum 1/8" per foot (1 % slope). Installation will strive for a '/d' per foot
during installation (2% slope).
OTWS Component
Elevation
Primary Tank Inlet
6320', Horizontal distance from house 10', '/d'
per foot fall from house (2%)(2.5" fall). Tank will
be installed 2' below grade and have a cleanout
T / W Sweep from the existing home connection
to establish required pipe fall.
Distribution Box
6300', This is 1 10'from the tank outlet and has
more than the minimum 20" of fall required.
Infiltrative Surface
Approx Horizontal distance 20', 1/8" per foot
fall, 2.5" of fall.
The system installation must include a 1000-gallon, two -compartment Infiltrator® poly septic tank
with an effluent filter on the outlet tee. Risers must bring the manhole lids to grade for access. If
more than one rider is added to the septic tank, an extension handle must be installed on the effluent
filter.
Effluent will gravity flow to a distribution box, and then to 4 gravelless chamber trenches. The
distribution box must be accessible and must have flow equalizers, or similar product, installed on
each outlet pipe in the distribution box to assure equal flow to each bed. Four total trenches will be
constructed Arc 36 Chamber InfiltratorV chambers. Two trenches will be of 12 chambers and two
trenches of 13 chambers for a total of 50 chambers and 600 square feet of infiltrative area. There
must be at least 4-feet of undisturbed soil between each trench. Inspection ports must be installed at
the beginning and end of each trench. Ports will be cut to grade and placed in sprinkler boxes for
access. Chambers will be installed at the minimum depth of one foot on the input side (nearest test
pit 2). If required during backfill and reclamation process the field will be contoured so that maximum
4' coverage of the infiltrators is not exceeded.
Adams ADU Septic Permit 13
Component Specifications
Description
Manufacture
Part Number
Quantity
1000 Gallon Septic Tank
Norwesco
94NO43517
1
Bio Tube Filter
Bio Tube Filter
940RFTWO44436
1
Arc 36" Chamber
Arc
133613BC2
50
Arc 36" End Cap
Arc
133603BD2
8
Distribution Box
Valley Precast
76VPDBOX8C
1
1' Extension for D-Box
Valley Precast
76VP12ECDB
1
4" PVC SDR35 Sewer Pipe (10')
04043510SWH
30
Quote and technical documents are attached. Note that quantities will be corrected for infiltrator end
caps, pipe quantities, tees, and additional plumbing parts.
Construction Notes
There are multiple physical limitations that make construction of the OTWS system during winter
months impractical. The Adams' parcel access is a limited 15' easement across Lazy Dog PLLC
to country road 241. This area has limited ability to remove snow and includes 10% grades. As
snow accumulates accessible travel way decreases to approximately 10'. Movement of larger
loads, such as septic tank, is not possible once snow accumulates. Additionally, primary
residence access will need to be dug up for multiple days during the project. Outside of winter
months fields are used as alternate access but no such access is practical during winter
months.
As of November 13, 2023, the lead time for septic tank and other parts is 6-8 weeks.
Construction in January / February is not practical with access limitations. Planning construction
in March / April 2023 is proposed.
All items will be constructed per manufactures specifications
Adams ADU Septic Permit 14
A 'o
rc TM
by IN F I LTRATOR
THE ARC 36 CHAMBER BY INFILTRATOR
Leaching chambers are rapidly becoming the product of choice for leachfield applications
over conventional pipe and gravel systems. Their lightweight construction offers lower
installed costs and less intrusive installations. W-11111b„ J
FOR OPTIMAL PERFORMANCE
The Arc 36 septic leaching chamber is a sturdy, lightweight plastic unit
that combines maximized infiltrative surface area and storage capacity
with an improved structural design to handle most any conventional
leachfield system challenge without sacrificing performance.
CouUle
FEATURES & BENEFITS:
Diamond
• Injection -molded from from polyolefin for lightweight and sturdy design. Pui
o
• 10-degree integral articulating joint that is ideal for either straight or contoured
septic leachfield applications.
• Corrugated chamber design eliminates flat surfaces and provides increased load
bearing capability in the trench.
• Designed to accommodate both gravity -fed and pressure -dosed
systems.
• "Lock and Drop" joint provides a more positive connection during installation and
backfill.
• A universal inlet/outlet endcap.
• Inspection vent ports on every unit with easy -to -remove knockouts for maximum
job site flexibility.
• Convenient five-foot lengths are easy to handle.
• Quickly installed by one person into three-foot wide trench or bed applications.
• Increased plumbing option with Side Port Coupler component which
snaps in place to allow side entry at any joint throughout trench line.
• Diamond plate texture increases slip resistance and enhances ease of installation.
Louvers and Feet
THE ARC 36 CHAMBER BY INFILTRATOR
Are 36 CHAMBER
Length
63" (1,600 mm)
Effective Length
60" (1,524 ram)
Sidewall Height
7.5" (191 mm)
Overall Height
13" (330 mm)
Overall Width
34" (864 mm)
Weight
15.5lbs
Total Bottom Area
12.27 sq ft
Capacity
8.4 cut It (63 gal)
CHAMBER REQUIREMENTS
Chamber shall meet the load rating of H-10 (16,000 lb per axle) with a minimum of
12 inches of cover when tested in accordance with IAPMO PS 63 and installed in
accordance with manufacturers installation procedures.
CHAMBER CONNECTION
Each chamber shall interlock with an integral articulating joint. Articulating joints shall
have a free range of horizontal rotation of 20 degrees, with a maximum of 10 degrees
in either direction. Articulating joint shall be constructed by placing the dome with
previously —installed chamber, with final engagement occurring when the lower base
flanges of the incoming chamber under -lap the raised base flanges of the previously-
nstalled chamber.
INFILTRATOR WATER TECHNOLOGIES STANDARD LIMITED WARRANTY
(a) The structural integrity of each chamber, endcap and other accessory manufactured
by Infiltrator (collectively referred to as "Units"), when installed and operated in a leach -
field of an onsite septic system in accordance with Infiltrator's installation instructions,
is warranted to the original purchaser ("Holder") against defective materials and work-
manship for one year from the date upon which a septic permit is issued for the septic
system containing the Units; provided, however, that if a septic permit is not required for
the septic system by applicable law, the one (1) year warranty period will begin upon the
date that installation of the septic system commences. In order to exercise its warranty
rights, Holder must notify Infiltrator in writing at its corporate headquarters in Old Say-
brook, Connecticut within fifteen (15) days of the alleged defect. Infiltrator will supply
replacement Units for those Units determined by Infiltrator to be defective and covered
by this Limited Warranty. Infiltrator's liability specifically excludes the cost of removal
and/or installation of the Units.
(b) THE LIMITED WARRANTY AND REMEDIES IN SUBPARAGRAPH (a) ARE EX-
CLUSIVE. 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 chamber system (chamber,
endcap or other accessory) is manufactured by anyone other than Infiltrator. The
Limited Warranty does not extend to incidental, consequential, special or indirect
damages. Infiltrator shall not be liable for penalties or liquidated damages, including
lass of production and profits, labor and materials, overhead costs, or other losses or
expenses incurred by the Holder or any third party. Specifically excluded from Limted
4 Business Park Road
P.O. Box 768
Old Saybrook, CT 06475
860-577-0000 - Fax 8fi0-577-7001
INFILTRATOR 1-8w-22i-4436
water technologies www.iMlltratorwateccom • info@infiltratorwateccom
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
traffic 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 ailing or improper sizing, excessive water
usage, improper grease disposal, or improper operation; or any other event not caused
by Infiltrator. 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 Infiltrator 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 Infiltrator's installation instructions.
(d) No representative of Infiltrator has the authority to change this Limited Warranty in
any manner whatsoever, or to extend this Limited Warranty. No warranty applies to any
party other than the original Holder.
The above represents the standard Limited Warranty offered by Infiltrator. A limited
number of states and counties have different warranty requirements. Any purchaser of
Units should contact Infiltrator'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.
U.S. Patents: 8322948: 8337119; 8297980: 7914230: 7008138. Other patents pending. Infiltrator, Outck4 and EZfiow are registered trademarks of Infiltrator Water Technologies. Infiltrator Water
Technologies is a wholly -owned subsidiary of Advanced Drainage Systems, Inc. (ADS).
:D 2022 Infiltrator Water Technologies, LLG. Not responsible for any typographic errors. Printed in U.S.A. ARC004 0522
Contact Infiltrator Water Technologies' Technical Services Department for assistance at 1-800-221-4436
Item #
DBox 8C
Top View
28"
Concrete Distribution Box
(1 Inlet, 7 Outlets) & Riser
28"
6 °
15"
A° .4
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< a a
Lid View
Section View
28"
25"
14"1 .®®®� a I
! 51, . 7"
Down Baffle
Riser Section
Access to Grade Required
28" -
12'.
I °
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a
Side View
End View
-- 15" --
REQUIRED REQUIRED
ROTO-FLOW 4" OR POLYLOCK EQUALIZER
W-NOTCH' WEIR
° WEIR SHAPE IS
Irtpy) SELF LEVELING
NOT TO SCALE
RIBS PROVIDE FRICTION
FIT FOR ALL 4' PIPE ID
NOT TO SCALE
End View
IFO VALLEY
PRECAST, Inc.
\ Buena Vista, Colorado
• 6000 PSI Concrete
• 7 Outlet equal flow
• Slide -in Baffle
• 4" Pipe penetration ports
• Connectors cast into the box
• 12" Riser available
Weight:
D-Box with Baffle - 200 Ibs
D-Box Lid - 75 Ibs
D-Box Riser - 140 Ibs
Phone: 719-395-6764
Fax: 719-395-3727
Website: wwwmalleyprecastoom
Email: frontdesk@valleyprecastoom
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MHORWESCO
Low Profile Underground Tank Installation Instructions
1. EXCAVATION
A Excavate to a depth that will provide
a minimum of 6" and maximum of
36' of cover over the top of the tank.
--a A % B. Allow 18' to 24" on both sides and
both ends of the tank.
c C• Prepare the tank bed. Preferred
bedding material is well -packed
sand — 6' minimum in soil terrain,
12" minimum in rock terrain. Native
soil can be used if it is flowable,
compactable, rock free, and can
�C provide uniform support in the re-
cessed rib areas. The tank should
be installed level.
3. CISTERN TANK INSTRUCTIONS
A. Install bulkhead fittings at the flat
areas located on either end of the
tank.
B. All tanks must be vented including
each tank in an interconnected
series.
C. The vent pipe should be the same
diameter as the outlet pipe.
D. When multiple tanks are installed in
series, you must maintain at least
36' of separation between tanks.
E. Flexible connections are required
between each tank on intercon-
nected tank installations.
S. BACKFlLLING EXTERIOR
A. Backfill around tank with 12' layers and
_ compact each layer. Always compact
ends first.
B. Each of the interior support columns
must be filled with free -flowing fill and
compacted in 6" layers. The columns
must have the soil compacted to provide
structural support. See diagram.
C. Be sure to compact soil under inlet and
outlet piping.
D. Maximum backfill over the top of the tank,
is 36".
E. Mound soil over the top of the lank to
direct surface water away from the tank.
2. SEFrICTANKCONNECTIONS
A. Low Profile septic tanks are pro-
vided with 4' PVC sanitary tees and
rubber gaskets for the inlet and
outlet.
B. All pipes should be chamfered and
gaskets lubricated.
C. Install gasket from the outside of the
tank as shown in the diagram. From
outside of the tank, push the pipe
into the gasket.
D. Inlet and outlet piping should be
solvent welded to sanitary tees.
E. Note the direction of flow. The outlet
is lower than inlet and all tanks are
marked accordingly.
4. MANHOLE EXTENSIONS
A.
0
Install manhole extensions and/or lid
risers before you backfill.
Manhole extensions are supplied
with gaskets and screws.
Install screws as shown in the dia-
gram around the circumference of
the base of the extension.
Be sure that the self -tapping screws
seat squarely into the tank.
6. BACKRLLMATERIALS
A. Free flowing native soil can be used as backfill. All fill must be
free of any wood, masonry debris, or silt. Shrinkiswell clay soils
should be avoided as backfill material.
B. If the native soil is unsuitable, replace it will a free flowing,
compactable maledal. A typical specification is 100% smaller
than 1 1/2" and approximately 50%smaller than 1/4".
C. Sharp objects must not come into contact with the tank.
For septic Installations, It Is Important to contact your local or state
sanitarian regarding approved Installation procedures.
CAUTION
Failure to comply with the points below voids warranty.
A. Tanks are not fire-resistant. Do not store them near an open flame or heat in excess of 180 *F.
B. Do not install any tank under the path of vehicles or heavy equipment.
C. Do not leave Low Profile septic tanks empty for extended periods of time.
D. Norwesco Low Profile septic tanks and cisterns are designed only for use as underground tanks.
E. Low Profile septic tanks and Low Profile cisterns may be used as holding tanks or for pumping
applications where permitted by local codes.
F. Low Profile septic and Low Profile cisterns are made of resins that meet FDA specifications for the
storage of drinking water and can be used for that application.
G. Protect the tank from sharp objects which could puncture it and cause leakage.
H. Where saturated soil or seasonal high water tables are indicated between the bottom of the tank and the
ground surface, see separate supplemental installation instructions for these site conditions.
Supplemental instructions can be found on our website.
For installations requiring counter -buoyancy measures; please refer to special instructions on our
website.
Norwesco advises against the use of a plastic underground tank for any other uses!
Such uses would void any Norwesco product warranty either stated or implied. In no event shall
Norwesco be held liable for any consequential damages.
WARRANTY
The Norwesco underground tanks, when installed in accordance to manufacturer's instructions, are warranted
against defective materials and/or workmanship for a full three (3) years from the date of manufacture. Should a
defect appear within the warranty period, Norwesco will supply a new equivalent tank in replacement thereof.
Norwesco's liability is limited to the value of the tank itself and specifically excludes the cost of installation and/or
removal and consequential damages.
®.RORWESCO
NORWESCO INC.
4365 Steiner Street
P.O. Box 439
63916 St. Bonifacius, MN 55375-0439
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Residential Biotube® Effluent Filters
Applications
Our patented' 4-inch (100-mm) Biotube Effluent Filters, Biotube Jr., Biotube Base
Inlet Filters, and Biotube Insert Filters are ideal for residential septic tanks and have
a lifetime warranty. They prevent large solids from leaving the tank, dramatically
improving wastewater quality and extending the life of residential drainfields.
4-inch (100-mm) Biotube Effluent Filter
4-inch (100-mm) Biotube Jr.
(4-inch Biotube cartridge avail-
able separately as Insert Filter)
•I
-1
8-inch (200-mm) 4-inch (100-mm)
Base Inlet Filter Insert Fitter
Orenco's superior effluent filters resist clogging better than all other brands. Our standard,
full-sized 4-inch (100-mm) Biotube Effluent Filter provides maximum long-term protection in a
complete package, with housing. Our 4-inch (100-mm) BioNbe Jr., at half the size of our stan-
dard model, has more filtering capacity than the full-sized filters sold by other manufacturers. For
low -profile tanks, there's the Base Inlet Filter And for tanks with existing outlet tees, the Biotube
Insert Filter is ideal.
'Covered by patent numbers 5.492.635 and 4,439,323
To Order
Call your nearest Orenco Systems®, Inc. Distributor. For nearest Distributor, call
0 t 800 346 n843
Oren
Standard
Natures &
Benefits
• Has 5-10 times more
flow area than other
brands, so lasts many
times longer between
cleanings, increasing
homeowner
satisfaction
• Installs in minutes
inside new or exist-
ing tanks; extendible
tee handle for easy
removal
• Easy to clean by
simply hosing off
whenever the tank
needs pumping
• Removes about two-
thirds of suspended
solids, on average,
extending drainfield
life
• Corrosion -proof con-
struction, to ensure
long life
• Lifetime warranty
Optional
Features &
Benefits
• Alarm available, to
signal the need for
cleaning
• Flow modulating
discharge orifices
available to limit flow
rate leaving tank,
mitigating surges and
increasing retention
time
• Custom and
commercial sizes
available
Biotube
Filtering
Process
Effluent from the
relatively clear zone
of the septic tank,
between the scum
and sludge layers,
horizontally enters the
Biotube Effluent Filter.
Effluent then enters the
annular space between
the housing and the
Biotubes, utilizing
the Biotubes' entire
surface for filtering.
Particles larger than the
Biotube's mesh are pre-
vented from
leaving the tank.
Orenco
a or visit www.orenco.com and click on whereto Buy. S Y S T E M S
APS-FT-1 arenco Systems• Inc. , 814 Airway Ave., Sutherlin, OR 97479 USA
Rev. 4.0 @ 04/17 800-348-9843 • 541-459-4449 • v .orenco.com
Page 1
Model Codes for Ordering
4-inch (100-mm) Biotube Filter (standard)
FT04❑ ❑-T❑
Flow modulator and float switch bracket options:
Blank - no options selected
M = flow modulation plate installed
A = Moat switch bracket installed
Cartridge height, in. (min):
28 = 28(711). standard
36 = 36firm. standard
Filler housing height, in (and
36 = 36 (914t soda and
44 = 44 t 118), standard
4-In. (100-mm) filler diameter
Outlet lee:
W = fits Type 3034 outlet tee
S = Inc Schedule 40 outlet tee
Filter mesh option:
Blank = 1,§-in.(3-mml lifter mesh
P = Fada n.6 man filler mesh
Biotubeeffluent filler
8-inch (200-mm) Biotube Filter (base inlet model)
FTD❑22-14B❑
Turn switch bracket and overflow plate options:
Blank = no options selected
A = goal swi ch elbow installed
FSO = overgow, plate installed
Base inlet model
ratings height. in. (mm):
14 = 14 (3561. standard
Filter housing height, in pool:
22 = 22(558), standard
Filter diameter in. hand:
08 8 (20)
12 = 12 (300)
Filter mesh apfion:
Blank = sHit. (3-mm)filter mesh
P = Te-io.(1.6-mm)filter mesh
Biotube' effluent filter
4-inch (100-mm) Biotube Jr. (includes cartridge and housing)
FT 041BT❑
Flow modulator and goal switch bracket options:
Blank = no options selected
M = flow modulation plate installed
A = float switch bracket installed
18-in. (457-mm) cartridge height
4-ie 000 mm) filler diameter
Outlet tee:
W = fits Type 3034 outlet lee
S = fits Schedule 40 mullet tee
Filter mesh option:
Blank = Tt in. (3-mml filter mesh
P = F)r-io. U.6-mml tiller mesh
Junior series
Bicare ` effluent fitter
4-inch (100-mm)
Biotube Effluent Filter
Extendible
StE
Biotube" IN
sollc
Filter
4-inch (100-mm)
Biotube Jr.
4-inch (100-mm) Biotube Filter Insert (cartridge only)
Fri 00418-0-0
r customized options (e.g., NC
indicates North Carolina regions)
W =fits 3034 outlet pipe
S = fits schedule 40 outlet pipe
Cartridge height (inches)
Indicates filter diameter (inches)
P = 1/16" filtration
Blank= 1/8" filtration
Insert series
Biotube effluent filter series
iiser
Nall
APS-FT-I orenoo Systems- Inc., 814 Airx'ay Ave., Sutherlin. OR 97479 USA
Rev. 4.0 0 04/17 800-348-9843 • 541-459-4449 • Wvrw.orenep.com
Page 2