HomeMy WebLinkAboutEngineer's OWTS Design Plant(frAH,ffi,mml':lid-"'
An Employcc Otmrcd Compony
5020 County Road 154
Glenwood Springs, CO 81601
phone: (970) 945-7988
fax: (970) 945-8454
email : kaglenwood@kumarusa. com
www.kumarusa,com
Ofiice Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
ONSITE WASTEWATER TREATMENT SYSTEM DESIGN
PROPOSED RESIDENCE
LOT 46, PAIIORAMA RANCHES
148 ST]NLIGHT DRIVE
GART'TELD COUNTY, COLORADO
PROJECT NO. 24-7-702.02
MARCH L9,2O25
PREPARED FOR:
RC SCHNEIDER CONSTRUCTION
ATTN: BOB SCHI\IEIDER
218 SAST VALLEY ROAI)
CARBONDALE, COLORADO 81623
rcscheiderconst@ gmail.com
TABLE OF CONTENTS
INTRODUCTION
PROPOSED CONSTRUCTION
..-1-
1
)-
SITE CONDITIONS
OWTS ANALYSIS
SUBSURFACE CONDITIONS -1-
DESIGN RECOMMENDATIONS
SOIL TREATMENT AREA...
owrs coMPoNENTS ............
OWTS OPERATION AND MAINTENANCE............6-
OWTS HOUSEHOLD OPERATION.......... ....6 -
OWTS MAINTENANCE
J
4
OWTS CONSTRUCTION OBSERVATION ..,,.7 .
...............-7 -
FLIMITATIONS
FIGURES
FIGURE I _ OWTS SITE PLAN
FIGURE 2 _ USDA GRADATION TEST RESULTS
FIGURE 3 _ SOIL TREATMENT AREA CALCULATIONS
FIGURE 4 _ SOIL TREATMENT AREA PLAN VIEW
FIGURE 5 _ SOIL TREATMENT AREA CROSS SECTION
ATTACHMENTS
VALLEY PRECAST I,OOO GALLON, TWO-CHAMBER SEPTIC TANK DETAIL
TUF.TITE 4-HOLE DISTRIBUTION BOX
I
Kumar & Associatee, lnc.Project No.2$7-702-02
INTRODUCTION
This report provides the results of an onsite wastewater treatment system (OWTS) design for a
proposed residence to be located at Lot 46,PanorcnaRanches, 148 Sunlight Drive, Garfield
County, Colorado. The purpose ofthe report is to provide design details for the OWTS in
accordance with the Garfield County Environmental Health Department Onsite Wastewater
Treatment System Regulations and the Colorado Department of Public Health and
Environmental Regulation #43. The services were performed as supplemental to our agreement
for professional services to RC Schneider Construction dated December 16,2024. We
previously performed a subsoil study for the proposed residence at the site and submitted the
findings in a report dated February 12,2025, Project No.24-7-702.
PROPOSED CONSTRUCTION
The residence will be a single-family, one-story structure located on the lot as shown on Fig. 1.
The residence will have three bedrooms. The OWTS will be designed for three bedrooms. The
proposed soil treatment area (STA) for the OWTS will be located to the south of the residence as
shown on Figtue 1. Water senrice will provided by apublic water supply from Sunlight Drive,
north of the residence. The route of the water supply line to the residence has not yet been
determined.
If proposed construction is different than that described, we should be contacted to re-evaluate
our design recommendations.
SITE CONDITIONS
The site was vacant with the outline of the house staked at the time of our field exploration.
The ground surface appeared mostly natural. The terrain is moderately sloping to the down to
the south at about lo%o grade. Vegetation consists of sagebrush, grass and weeds. There were
no visible surface water features.
SUBSURFACE CONDITIONS
The field exploration for the OWTS was conducted on March 4,2025. Two profile pits (Profile
Pits 1 and?) were excavated with an excavator at the approximate locations shown on Figure 1
to evaluate the subsurface conditions at the planned soil treatment area for the OWTS. The pits
were logged by a representative of Kumar & Associates. Logs of the profile pits are provided
below.
Kumar & Associates, lnc.Project No. 24"7 -7 02.02
Depth USDA Classillcation
0-lo TOPSOL; organicLoam, firm, moist, brown.
\,,I 5 LOAM; strong blocky structure, stiff, slightly moist, brown.
5',-8'SILT LOAM; moderate blocky structwe, very stiff, pale brown, calcareous
a
a
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Disturbed bulk sample obtainedfrom 3 to 4 feet.
Bottom of pit @ \feet.
No groundwater or redoximorphic features observed at time of pit excavation.
a
of Profile Pit I
Log of Profile Pit 2
The soils encountered in the profile pits, below about I foot of organic topsoil, consisted of
about 4 feet of Loam overlying Silt Loam down to the pit depths of 7 and 8 feet. Hydrometer
and gradation analyses were performed on a disturbed bulk sample of the soils from Profile Pit I
from 3 to 4 feet depth with the results provided on Figure 2. The tested sample (minus No.10
size sieve fraction) classifies as Loam per the USDA system, No free water was encountered in
the pits nor indications of seasonal high groundwater were observed at the time of the pit
excavations.
Based on the subsurface conditions and laboratory testing, the soils at the STA have been
classified as Type 2 per State regulations, which equates to a long-term acceptance rate (LTAR)
of 0.60 gallons per square foot per day.
OWTS ANALYSIS
Based on the site conditions and profile pit evaluations, the evaluated area should be suitable
for a conventional infiltration disposal system. There is adequate elevation difference from the
residence down to the STA for gravity flow of the sewer effluent. The STA will consist of
chambers in a trench configuration based in the Loam soils. The STA will be sized for three
bedrooms (6 persons) with an average daily flow of 75 gallons per person, and an LTAR
of 0.60 gallons per square foot per day for the natural soils.
The effluent will gravity flow from the residence to the septic tank for primary treatment and
then gravity flow to the STA for dispersal and final treatment. The STA will consist of two
trenches with Infiltrator Quick 4 Plus Standard chambers. Equal distribution will be provided
to the chambers and trenches by a distribution box.
Depth USDA Classification
0-1'TOPSOL; organic Loam, firm, moist, brown.
I ,,
5 )LOAM; strong blocky structure, stifl slightly moist, brown.
5'-7',SILT LOAM; moderate blocky structure, very stiff, pale brown, calcareous.
a
o
Bottom of pit @ 7 feet.
No groundwater or redoximorphic features observed at time of pit excavation.
Kumar & Associates, lnc.Project No. 24-7 -7 02.02
a-J-
The well is far outside of any setbacks to the OWTS. The route of the planned water supply line
to the residence is currently not designed. The required setback to the water line from the septic
tank is 10 feet, 5 feet for sewer and effluent lines, and25 feet from the STA. We should be
notified for additional recommendations if the water line is withinthese minimum setbacks.
DESIGN RECOMMENDATIONS
The design recommendations presented below are based on the proposed construction, the site
and subsurface conditions encountered and our experience in the area. A layout ofthe proposed
OWTS components is provided on Figure l. If conditions encountered during construction are
different than those that are described in this report, we should be contacted to re-evaluate our
design recommendations.
SOIL TREATMENT AREA
o The STA will consist of two trenches with2?Infiltrator Quick 4 Plus Standard chambers
placed in each trench (44 chambers total) in the native soils. Equal distribution will be
provided to the trenches by a distribution box.
o The STA was sized based on an LTAR of 0.60 gallons per square feet per day.
o Each chamber was allowed 12 square feet of area. A30% reduction of the STA size was
applied for use of Infiltrator chambers in a trench configrnation. The total STA design
size is 528 square feet. Soil treatment area calculations are shown on Figure 3.
o A minimum of four feet of undisturbed soil between trenches is required.
o Trench cut depths should be a maximum of 4 feet deep.
o The trenches should be oriented along ground contours to minimize soil cut and cover.
o The base and sidewalls of the trench excavations should be scarified prior to the chamber
placement.
e A minimum of 12 inches and a maximum of 24 inches of cover soil should be placed
over the chambers.
r Backfill should be graded to deflect surface water away from the STA and should be
sloped at 3 horizontal to 1 vertical or flatter. A swale to divert surface water flow away
from the STA may be needed.
o Disturbed soil should be re-vegetated as soon as possible with a native grass mix. No
trees, shrubs or other plants with deep roots should be planted on or near the STA as this
may damage the system piping.
o Four-inch diameter inspection ports should be installed vertically into the knockouts
provided in the chamber end caps. Install ports at each end of the trench. The inspection
port piping should be screwed into the top to the chambers and should not extend down
to the ground surface inside the chambers. The inspection ports should extend at least
8 inches above the finished ground surface or be protected in a valve box at finished
grade.
. The STA must be a minimum of 5 feet from the septic tank.
r The STA must be a minimum of 25 feet from any potable water supply lines.
o The STA must be a minimum of 20 feet from the any foundations.
Kumar & Associates, lnc.Project No. 24-7 -7 02.02
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r The STA must be a minimum of 10 feet from property lines.
r A plan view of the STA is presented on Figure 4 and a cross section of the STA is
presented on Figure 5.
OWTS COMPONENTS
Recommended OWTS components provided below are based on our design details and ow
experience withthe specific component manufacturers. Equivalent components may be feasible
but need to be approved by us prior to construction.
Septic Tank
o A Valley Precast 1,000 gallon, two-chamber septic tank should be used. A detail of
the tank is provided as an attachment.
o An effluent filter should be installed in the tank outlet tee.
o The tank must be a minimum of 5 feet from the residence and the STA.
r The tank must be a minimum of l0 feet from any potable water supply lines or properly
lines
o The tank must be set level. The excavation bottom must be free of large rocks or other
objects that could damage the tank during placement. A road base or gravel bedding
material may be needed to prevent tank damage during placement and act as a leveling
course,
r The tank lids must extend to final surface grade and made to be easily located.
r Install the tank with 2 feet minimum cover soil for frost protection. Maximum tank
soil cover is 4 feet.
Sewer Pipe
o The sewer line to the septic tank should not be less than the diameter of the building
drains and not less than 4 inches in diameter.
. The sewer pipe should have a rating of SDR35 or stronger.
o Schedule 40 PVC pipe is required beneath any driveway surfaces.
o The sewer pipe should be sloped between 2Yoto 4Yoto help limit disturbance of solids
in the tank and potential sewage bypass of the first chamber of the tank. If a steeper
slope is needed, this can be accomplished with vertical step-downs in the sewer line.
o A minimum 18 inches of cover soil should be provided over the sewer pipe. Paved areas,
patios or other areas without vegetative cover may be more susceptible to frost and we
recommend 48 inches of soil cover over the sewer pipe in these areas, and the pipe be
insulated on top and sides with 2-inch-thick blue foam insulation board. If adequate soil
cover is not possible, we should be contacted for re-evaluation prior to installation.
r The sewer pipe should be bedded in compacted%-inch road base or native soils provided
that the native soils contain no angular rocks or rocks larger than2% inches in diameter
to help prevent settlement of the pipe. Sags in the pipe could cause standing effluent to
freeze and damage the piping.
Kumar & Associates, lnc.Project No. 24"7 -7 02.02
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Install cleanout pipes within 5 feet ofthe building foundation, where the sewer pipes
bend 90 degrees or more and every 100 feet of sewer pipe.
All 90-degree bends should be installed using a 90-degree long-sweep or by using two
45-degree elbows.
The sewer line location shown on Figure 1 is considered conceptual. We assume that
there will be only one sewer line exiting the residence. It is the responsibility of the
owner/ contractors to locate all sewer line exit locations and connections to the septic
tank. We should be notified if there are other sewer lines exiting the building.
Eflluent Transport Piping
o The effluent transport pipe should be 4-inch diameter SDR35 piping sloped at a2o/o
minimum to flow from the septic tank to the distribution box and from the distribution
box to each trench. Piping should extend at least 6 inches into the top knockout provided
in the Infiltrator end caps and be screwed in place. Splash plates should be installed
beneath the inlet piping to help limit scouring of the infilnative soil surface in the
chambers.
r The effluent transport pipe should be bedded in compactedt/a-inchroad base or native
soils provided that the native soils contain no angular rocks or rocks larger than
ZVzinches in diameter to help prevent settlement of the pipe. Sags could cause standing
effluent to freeze and damage to the piping.
e A minimum l8 inches of cover soil should be provided over the effluent transport pipe.
Paved areas, patios or other areas without vegetative cover may be more susceptible to
frost. We recommend 48 inches of soil cover over the effluent pipe and insulation with
at least 2 inches of rigid foam insulation in these areas. If adequate cover soil is not
possible, we should re-evaluate the condition prior to installation.
r Schedule 40 PVC pipe is required underneath driveway surfaces and should be provided
with at least 48 inches of soil cover and be insulated on top and sides with Z-inch-thick
rigid foam insulation board.
o All 90-degree bends should be installed using a 90 degree long-sweep or by using two
45-degree elbows.
Distribution Box
o The distribution box will be used to equally divide e luent flow between the trenches.
We recommend the Tuf-Tite 4-Hole Distribution Box since it is easily accessible from
ground surface for maintenance. A copy of the distribution box detail is provided as an
attachment to this report.
c The distribution box outlet pipes should be equippedwith Tuf-Tite speed levelers for ease
of initial setup and adjustment over time.
r The distribution box should be a minimum of 18 inches below grade with risers and an
access lid at or above grade.
r The distribution box must be accessible from ground surface for inspection and
maintenance per the State guidelines.
a
o
Kumar & Associates, lnc.Project No. 24"7 -7 02.02
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The effluent line from the septic tank should be directed downward into the distribution
box with a 90-degree elbow inside the box.
The distribution box must be installed level on a compacted road base subgrade to ensure
equal effluent distribution. If settlement of the distribution box occurs, unequal effluent
distribution may take place which could cause hydraulic overload of one of the trenches
and potential failure. The distribution box should be monitored periodically, and the
speed levelers should be adjusted as necessary for levelling.
The ground surface above and around the distribution box should be graded to drain away
surface water to prevent standing water near the distribution box which could freeze or
cause settlement.
OWTS OPERATION A]\D MAINTENANCE
The OWTS will require periodic inspection and maintenance to function properly. A propedy
designed, installed and maintained system can greatly increase its lifespan. The level of
maintenance will vary depending on the complexity of the system and water use habits of the
residents. We recommend that an OWTS Operation and Maintenance (O&M) Manual be
developed. Depending on the complexity of the systemo a contract with an OWTS maintenance
provider may be prudent. Below are some basic recommendations for the OWTS O&M.
OWTS HOUSEHOLD OPERATION
r Use of high efficiency water fixtures is recommended to decrease the hydraulic load
on the OWTS system.
o Fix plumbing leaks immediately as this may cause a hydraulic overload of the soil
absorption system.
o Do not irrigate the area on top of or directly upgradient of the STA field as this may
cause a hydraulic overload.
o Do not dispose of household waste down drains as this may clog or damage OWTS
components. Examples of household waste include: dental floss, cotton swabs, coffee
groundso paper towels, feminine products and many other kitchen and bath items.
o Use of kitchen garbage disposals is not recommended. If a garbage disposal is utilized,
kitchen wastewater should be screened thoroughly. Many kitchen solids are not
decomposed in the septic tank and may cause increased tank pumping frequency.
r Do not dispose of household chemicals, greases, oils, paints, hot tub water or water
softener backrvash in household drains. A separate drywell, if feasible, may be necessary
for hot tub water or water softener backwash disposal.
o Limit the use of bleach as this may harm useful bacteria in the septic tank and soil
absorption system.
o Liquid dishwasher and clothes washer detergent is recommended for households served
by an OWTS. Clay subsknces used as fillers in powder detergents may result in
clogging of the soils absorption system.
a
Kumar & Associates, lnc.Project No.2G7-702.02
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OWTS MAINTENANCE
o Inspect the septic tank, distribution box and STA at least annually for problems or signs
of failure.
r The effluent filter for the tank should be cleaned at least annually by spray washing solids
into the first chamber of the septic tank.
o The septic tank should be pumped and cleaned every 3 to 5 years depending on use.
Longer pumping intervals may increase the amount of solids that reach the STA, which
may shorten its life span.
o Pumping of the septic tank should take place when the level of the sludge and scum
layers combined take up 25 to 33Yo of the capacrty of the first chamber of the tank.
OWTS CONSTRUCTION OBSERVATION
The Garfield County Environmental Health Department requires that the designer of the system
provide a record drawing and certification of the OWTS construction (As-Built inspection).
We should be provided with at least 48-hour notice prior to the installer needing the inspections
Prior to issuance of our certification letter, we require observation of all system components
prior to bacldill. The number of site visits required for the inspection will depend on the
installer' s construction schedule.
LIMITATIONS
We have conducted this design in accordance with generally accepted engineering principles and
practices inthis areaatthis time. We make no warranty either expressed or implied. The
recommendations provided in this report are based on the site conditions, profile pit evaluations
and soil texture analysis, the proposed construction and our experience in the area. Variations in
the subsurface conditions may not become evident until excavation is performed. If conditions
encountered during construction appear different from those described in this report, we should
be notified so that re-evaluation of the recommendations may be made.
This report has been prepared for the exclusive use by our client for design purposes. We are not
responsible for technical interpretations by others of our information. As the project evolves, we
should provide continued consultation and field services during construction to review and
monitot the implementation of our recommendations, and to verifr that ttre recommendations
have been appropriately interpreted. Significant design changes may require additional analysis
or modifications to our design.
It is our opinion that the designed location of the OWTS components does not violate any
setback requirements of the current Garfield County Regulations. Below is a table of common
minimum horizontal setbacks to OWTS components. Refer to the Garfield County Regulations
for a complete list of required setbacks. We recommend the OWTS components be surveyed by
a Professional Colorado Land Surveyor.
Kumar & Associates, lnc.Project No. 24"7 -T 02.02
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Table 1- Common Minimum Ilorizontal Setbacks from OWTS Components
Please contact us for any necessary revisions or discussion after review of this report by Garfield
County. If you have any questions, or if we may be of further assistanceo please let us know.
Respectfully Submitted,
Kumar &
Shane M. Mello, StaffEngineer
Reviewed
David A. Young, P
SMMlkac
Wells
Water
Supply
Line
Occupied
Dwelling
Lined
Ditch
Lake,
Irrigation
Ditch,
Stream
Dry
Ditch or
Gulch
Septic
Tank
STA 100'25',20'l0'50'25',5'
Septic Tank 50't0'5'10'50'10'
Building Sewer 50'5 t 0'10'50'10'
Kumar & Associatee, lnc.Project No.2S7-702.02
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PANORAMA RANCH
148 SUNLIGHT DRIVE
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PlT 1I
PROFILE
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PROPOSED
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DISTRIBUTION
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1.88'
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TMENTPROPOSED SOIL TREAfAREA (STA) CONSTSTTNG OF2 ROWS OF 22 INFILTRATOR
QUICK/I PLUS STANDARD
CHAMBERS.
(44 CHAMBERS TOTAL)
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Fig. 1OWTS SITE PLAN24-7-702.42 Kumar & Associates
SIEYE ANALYIIgHYDNOT'ETEN AilALYTIS
rrE t Diltol
LflI. tBtara rli ar 4 dI is A &aa^Itd
qitn SqnE rElaa€t
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S UPI,E OF! LOAII
FROX: PROFILE PIT t AT 3 TO ,+ FEET
ENTIRE SAITPI.-E
PARnCU S|ZE D|STRTBUTTOil X
coEBt Fs o
GRAYEL t
SAND 38
SILT ilo
cllY 23
PORT|OI{ OF S lrPl.-E
P SSTNG tto sErrE
PAnT|CU SlzE D|SIRTBUTTOT{ X
IIAND 56
SILT 11
cuY 23
TOTAL SAMPI"E RETilNED ON ftO SltvE: tt
PERCENT OF )lArERlAL RETA|NED ON #10 SIEVE
P SSING 5,/4" iIEVE: 100X
NOTE{ Hydrumct r AnolyrL wor p.rform.d on o
bulk romplc lollowlng rcn .nlng of oll moLr{ol
lorg.r lhon thr f10 rtrvr (2.0 mm) prr USDA
guldrllnrr.
thrn lrrl r.uft. oDply onlt l,r th.enpLr rhl6h rrn l.'$rd, Thrt..ilng rpod rlEll nol b. npruduo.d,.ra.pl ln tull, rllhoul lh. ffllLnoDpffil ot Xumor t Al|*lql.r, lnc.Slin onolplr l.'flm tt N,1ffi ln
oo@doro. ullh Asllt D422, Asfil Cl56
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GRAVELslt-T s,qND
FINE @.V. FINE NNE MEI)lUM @.v@.FINE MEDI.JM coAasE
cR^rlt slzE
(mm)srEvE stzE r flNER
r27.00 l(xt
76.00 100
5E.10 1-1 /2'loo
r9.05 ve too
9.50 3/E'100
1-73 t1 loo
2.00 tl0 9S
t.00 IrE 9t
0.50 t35 9l
0.2:t 160 97
o.108 llito 95
o.03l a270 65
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(mm)
N}'E FASSED
(mln)X RNER
o.057 I 60
0.010 1 /fi!
o.oo0 t9 55
0.0o5 60 27
0.002 4tt5 2:t
0.00t t5i15 17
24-7-702.02 Kumar & Associates USDA GRADAT]ON TEST RESULTS Fi1. 2
OWTS SOII TREATMEilT AREA CALCUTATIOI{S
In accordance with the Eagle County OWTS Regubtbns and the Cobrado Depaftment of Pubk Heath
and Envionment's Regulatbn #43, the sol treatment area uns calculated as folous:
CALCUTATION OF OWTS DESIGN FLOWI
e = (FXN)
N = 2 PERSONS PER BEDROOM
WHERE:
Q = DESIGN FLOW
F = AVEMGE FLOW PER PERSON PER DAY
B = NUMBER OF BEDROOMS
N = NUMBER OF PERSONS
f;=
$=
[\=
Q=
75 GATIONS PER DAY
3 BEDROOMS
6 PERSONS
450 GALLONS PER DAY
CALCULATION OF OWTS SOIL TREATMENT AREA:
MINIUMUM TREATMENT AREA = Q + LTAR
WHERE:
Q-
LTAR (SOIL TYPE 2) -
45O GALLONSPERDAY
0"6 GALLONS/F|2/DAY
MIilIMUM SOIL TREATMENT AREA =7s0.0 SQUARE FEET
REDUCTION FACTOR FOR CHAMBERS =0.70
MINIMUM SOIL TREATMENT AREA WITH REDUCTION = 525 SQUARE FEET
AREA PER INFITTRATOR QUICK 4 STANDARD CHAMBER =
TOTAL CHAMBERS NEEDED =
12 SQUARE FEET
44 CHAMBERS
NUMBER OF TRENCHES =
CHAMBERS PERTRENCH =
TOTAL NUMBER OF CHAMBERS AS DESIGNED =
2 TRENCHES
22 CHAMBERS
44 CHAMBERS
TOTAT SOIL TREATMENT AREA =s28 SQUAREFEET
24-7-702.02 Kumar & Associates SOIL TREATMENT AREA CALCULATIONS Fig. 5
4 INCH DIAMETER PVC
OBSERVATION PORTS
INSTALLED VERTICALLY INTO
THE KNOCKOUTS PROVIDED IN
END CAPS. INSTALL PORTS
AT EACH END OF EACH
TRENCH. REMOVABLE LID TO
BE PLACED ON TOP OF PIPE.
PIPE MUST STICK UP AT8 INCHES ABOVE
FINISHED GRADE OR BE
PLACED AT GRADE IN AN
ACCESSIBLE VALVE BOX.
PIPES SHOULD NOT EXTEND
TO SOIL SURFACE AND
SHOULD BE SECURED TO
CHAMBER WITH SCREWS OR
COUPLINGS TO PREVENT
SLIDING DOWNWARD.
r. $L
INFILTRATOR QUICK
PLUS STANDARD
END CAP.
INFILTRATOR QUICK4 PLUS
STANDARD CHAMBERS IN 2
TRENCHES. 22
PER TRENCH (++ rorll).
4 INCH DIAMETER
NON-PERFORATED
SDR35 TRANSPORT
PIPE SLOPED AT A
2% MtN. DOWN TO
DISTRIBUTION BOX.
TRANSPORT PIPING SHOULD BE
INSERTED AT LEAST 6 INCHES
INTO THE UPPER KNOCKOUT IN
THE END CAP. INSTALL
PI.ATES BENEATH INLET PIPING
TO HELP LI}dIT SCOURING OF
THE INFILTRATIVE SURFACE.
F
1
TUF-TITE
4-HOLE
BOX
4 INCH DIAMETER
NON-PERFORATED
SDR35 TRANSPORT
PIPE SLOPED AT A
2X M]N. DOWN TO
TRENCH.
SCALE.FEET
Notes:
1. Chambers should be installed level on a scarified ground surface. Concrete sand may be used as a leveling course if
necessary.
2. Care should be taken by the contractor to avoid compaction of the native soils in the trench areas. The base and side walls of
trench excavations should be scarified prior to chamber installation.
3. All piping should have a rating of SDR35 or stronger.
4. Changes to this design should not be made without consultation and approval by Kumar & Associates.
5. Refer to the Garfield County Onsite Wastewater System Regulations for other applicable specifications.
24-7-702.02 Kumar & Associates SOIL TREATMENT AREA PLAN VIEW Fig. 4
INFILTRATOR QUICK 4
PLUS STANDARD
CHAMBER INSTALLED
LEVEL
EXCAVATE 35,'
WIDE TRENCH
12- M1N./24" MAX.
COVER SOIL GRADED
TO DEFLECT
SURFACE WATER
ACE
Notes:
1. Chambers should be installed level on a scarified ground surface. Concrete
sand may be used as a leveling course if necessary.
2. Care should be taken by the contractor to avoid compaction of the native soils in
the trench areas. The base and side walls of trench excavations should be
scarified prior to chamber installation.
3. Changes to this design should not be made without consultation and approval
by Kumar & Associates.
SCALE-FEET
NATIVE SOIL
SCARIFY GROUND
SURFACE PRIOR TO
CHAMBER PI.ACEMENT
24-7-702.02 Kumar & Associates SOIL TREATMENT AREA CROSS-SECTION Fis. 5
{OOO Gallon Top $eam - zCPlbml
toootrilcp
11 Top
Mew
pEscN NqTEqe Dcclgn p€r pqformoncc test pcr
ASTM C1227 r'*-i't-'.18
r Top surfocc oreo 46.25 fttr fc C 28 doys; concrctc = 6.000 PSI
Mln.
lnalollotlon:,r Tonk to bc gct on 5- mln. sond
bcd or pco grovdr Tonk to bc bcc*flllcd unlformly on
oll oldcs ln llftc lcsr thon 24' ond
mcchonlcolly compoctcdr Excovotcd motcrlol moy bc urcd for
bockflll, provldcd lorgc atoncc ore
rcmovcdr Excorotion rhould bc dcwotered ond
tonk flllcd ulth wotcr prlor to bcing
put ln scrvlcc for lnotollotlon wlth
wotcr toblc lcag thon 2' bdow grodcr Mccta C1644-06 for rcalllcnt
conncctorsr lnlct ond Outlct ldcntificd obow pipeo Dcllvcrcd complctc wlth lntcrnol
plplngo 4' Moxlmum bury dcpth
Cbrlm
6t )'
i" ' '-
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....-.i't t
bGrS
Fldblo tubbrffi
5t t'
Section
Mew
Dlgglng Speca lnvert Dlmenelons Net Copoclty Net Welght
11' Long x 7' Wide
56' below inlet
Length width Side Totol Lid Tonk Totql
56'111e 60'68,687 gol 323 gol 1010 gol 2620 lbs 9J80 lbs 12000 lbs
ALLOWABLE BURY
(Boacd on Wotcr Toblc)
WATER TABT€ALLSWAELE
FAPTI{ FII I
o'-o'2'-o'
1'- 0-3'- O'
2'-0.5'- O'
5'- 0'c-o'
DRY c-d
1 1
Outlet
Phonr: 710€06i\€ilG[
FDG 7lg!305F9727
t|hbrtb: u,ww.rdbyprEcad.odn
Erril: ttonUelt@atlepnd.om
.&.Tl,T.TffE'4 -Hole Distribution Box
Tough Problem
Providlng a simple, reliable, and
pgrmanent mesns for dividing septic
tank effluent flow.
TUF-TITE Solution
A stmng, stable, pomanent,
non-conosive Tuf -Tite Distribution
Box, with a Tuf-Tite Speed Leveler
in each outlet.
I lnjection molded HDPE
I Non-corrcsive
I Simple to install
I Easy to level
ln a septic environment, no other
materialcan match High Density
Polyethylene in delivering a lifetime
of trouble-free service. Tuf-Tite
Distribution Boxes are injection
molded, using only premium HDPE
which contains no fillers or foam.
Snap-in pipe seals
They're patented. Simply insert your
PVC pipe and push it through the
flexible, polyethylene Tuf-Tlte seal.
Pipes fit watertight. lnstallation couldn't
be easier.
They're permanent
Unlike cement-based pipe grout,
Tuf-Tite seals will not crack or corrode
in septic conditions. They stay pliable
and watertight permanently.
+
I
I a sil r I ITUFTITE4 Box 4HD2
INSTALI.ATION IS
JUSTTHISSIMPLE
1. Position the Distribution Box
on levelvirgin soil.
Do not place box on a
concrete slab.
2. lnstallthe inlet pipe and
outlet pipes. Be sute the
bottoms of all pipes rest on
virgin soil.
3. Levelthe Distribution Box
and all pipes as needed.
4. Backffllthe pipes to within
two feet of the Distribution
Box. Recheck the level of the
box, then backfill up to the
top lid ddge.
5. lnstall and adjust Tuf-Tite
Speed Levelers.
6. Place lid on the Distribution
Box and finish backfilling.
s€5 IrO
{,
...1,_ro
Gholce of Fittings
S-35 Pipe Seal,for:I Sewer and Drain
rSDR35 TASTM3O34
I Thin Wall r 1fln Lb, Cn6h
S40 Pipe Seal, for:I Schedule 40
1 4" Comrgated
P-10 Plug, for unused holes
Ghoice of Lids
Regular Lid. Molded ol rugged
HDPE.
lnspection Port Lid. Foreasy
access and inspection. Models
available to accept either 4" or
6" extension pipes.
TUf-Tite Speed LevelercrH
Control the flow of effluent lrom
lhe Distribulion Box. Simply
insefi a Speed Leveler into each
outlel pipe. Rotate each Speed
Leveler so lhe flow is distributed
as desired. Available for 3" or 4"
PVC pipe.
.*
-TUF'TITE'l;
-
Alull llncof
innowtionsfor
betterrqptb
slrrttrrr
Drainage and Septic Products
Tul-Tite'Corporation
1200 Flex Court
Lake Zurich, lllinois 60047
01 9Sg Tuf-ft€@ Corporatlon
Form 4HD2-3. ftinted ln UsA